CA2258882C - Compositions and methods for altering the biodistribution of biological agents - Google Patents
Compositions and methods for altering the biodistribution of biological agents Download PDFInfo
- Publication number
- CA2258882C CA2258882C CA002258882A CA2258882A CA2258882C CA 2258882 C CA2258882 C CA 2258882C CA 002258882 A CA002258882 A CA 002258882A CA 2258882 A CA2258882 A CA 2258882A CA 2258882 C CA2258882 C CA 2258882C
- Authority
- CA
- Canada
- Prior art keywords
- protein
- microbubbles
- biological agent
- gas
- albumin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000000203 mixture Substances 0.000 title claims abstract description 36
- 239000003124 biologic agent Substances 0.000 title claims description 21
- 238000000034 method Methods 0.000 title abstract description 29
- 108091034117 Oligonucleotide Proteins 0.000 claims abstract description 51
- 239000003814 drug Substances 0.000 claims abstract description 38
- 108091033319 polynucleotide Proteins 0.000 claims abstract description 9
- 102000040430 polynucleotide Human genes 0.000 claims abstract description 8
- 239000002157 polynucleotide Substances 0.000 claims abstract description 8
- 108090000623 proteins and genes Proteins 0.000 claims description 63
- 102000004169 proteins and genes Human genes 0.000 claims description 57
- 102000009027 Albumins Human genes 0.000 claims description 40
- 108010088751 Albumins Proteins 0.000 claims description 40
- 239000007789 gas Substances 0.000 claims description 40
- 239000000243 solution Substances 0.000 claims description 26
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 claims description 20
- 239000008121 dextrose Substances 0.000 claims description 20
- 238000000527 sonication Methods 0.000 claims description 14
- TXEYQDLBPFQVAA-UHFFFAOYSA-N tetrafluoromethane Chemical compound FC(F)(F)F TXEYQDLBPFQVAA-UHFFFAOYSA-N 0.000 claims description 14
- 108091006905 Human Serum Albumin Proteins 0.000 claims description 12
- 102000008100 Human Serum Albumin Human genes 0.000 claims description 12
- 102000039446 nucleic acids Human genes 0.000 claims description 10
- 108020004707 nucleic acids Proteins 0.000 claims description 10
- 150000007523 nucleic acids Chemical group 0.000 claims description 10
- QYSGYZVSCZSLHT-UHFFFAOYSA-N octafluoropropane Chemical compound FC(F)(F)C(F)(F)C(F)(F)F QYSGYZVSCZSLHT-UHFFFAOYSA-N 0.000 claims description 9
- 229960004065 perflutren Drugs 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 8
- KAVGMUDTWQVPDF-UHFFFAOYSA-N perflubutane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)F KAVGMUDTWQVPDF-UHFFFAOYSA-N 0.000 claims description 8
- 229950003332 perflubutane Drugs 0.000 claims description 8
- 239000000725 suspension Substances 0.000 claims description 8
- RYYWUUFWQRZTIU-UHFFFAOYSA-K thiophosphate Chemical compound [O-]P([O-])([O-])=S RYYWUUFWQRZTIU-UHFFFAOYSA-K 0.000 claims description 8
- NIJJYAXOARWZEE-UHFFFAOYSA-N Valproic acid Chemical compound CCCC(C(O)=O)CCC NIJJYAXOARWZEE-UHFFFAOYSA-N 0.000 claims description 6
- 210000004369 blood Anatomy 0.000 claims description 6
- 239000008280 blood Substances 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 6
- 239000013543 active substance Substances 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 5
- 150000001720 carbohydrates Chemical class 0.000 claims description 5
- 238000010790 dilution Methods 0.000 claims description 5
- 239000012895 dilution Substances 0.000 claims description 5
- CZMRCDWAGMRECN-UGDNZRGBSA-N Sucrose Chemical compound O[C@H]1[C@H](O)[C@@H](CO)O[C@@]1(CO)O[C@@H]1[C@H](O)[C@@H](O)[C@H](O)[C@@H](CO)O1 CZMRCDWAGMRECN-UGDNZRGBSA-N 0.000 claims description 4
- 229930006000 Sucrose Natural products 0.000 claims description 4
- 239000000074 antisense oligonucleotide Substances 0.000 claims description 4
- 238000012230 antisense oligonucleotides Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 4
- 229910052757 nitrogen Inorganic materials 0.000 claims description 4
- 239000002773 nucleotide Substances 0.000 claims description 4
- 125000003729 nucleotide group Chemical group 0.000 claims description 4
- 239000001301 oxygen Substances 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000005720 sucrose Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 102000053642 Catalytic RNA Human genes 0.000 claims description 3
- 108090000994 Catalytic RNA Proteins 0.000 claims description 3
- BYBLEWFAAKGYCD-UHFFFAOYSA-N Miconazole Chemical compound ClC1=CC(Cl)=CC=C1COC(C=1C(=CC(Cl)=CC=1)Cl)CN1C=NC=C1 BYBLEWFAAKGYCD-UHFFFAOYSA-N 0.000 claims description 3
- CMWTZPSULFXXJA-UHFFFAOYSA-N Naproxen Natural products C1=C(C(C)C(O)=O)C=CC2=CC(OC)=CC=C21 CMWTZPSULFXXJA-UHFFFAOYSA-N 0.000 claims description 3
- NHUHCSRWZMLRLA-UHFFFAOYSA-N Sulfisoxazole Chemical compound CC1=NOC(NS(=O)(=O)C=2C=CC(N)=CC=2)=C1C NHUHCSRWZMLRLA-UHFFFAOYSA-N 0.000 claims description 3
- 108010046334 Urease Proteins 0.000 claims description 3
- VAAUVRVFOQPIGI-SPQHTLEESA-N ceftriaxone Chemical compound S([C@@H]1[C@@H](C(N1C=1C(O)=O)=O)NC(=O)\C(=N/OC)C=2N=C(N)SC=2)CC=1CSC1=NC(=O)C(=O)NN1C VAAUVRVFOQPIGI-SPQHTLEESA-N 0.000 claims description 3
- 229960004755 ceftriaxone Drugs 0.000 claims description 3
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 0.000 claims description 3
- 229960003883 furosemide Drugs 0.000 claims description 3
- 108010074605 gamma-Globulins Proteins 0.000 claims description 3
- WMIYKQLTONQJES-UHFFFAOYSA-N hexafluoroethane Chemical compound FC(F)(F)C(F)(F)F WMIYKQLTONQJES-UHFFFAOYSA-N 0.000 claims description 3
- 229960002509 miconazole Drugs 0.000 claims description 3
- 229960002009 naproxen Drugs 0.000 claims description 3
- CMWTZPSULFXXJA-VIFPVBQESA-N naproxen Chemical compound C1=C([C@H](C)C(O)=O)C=CC2=CC(OC)=CC=C21 CMWTZPSULFXXJA-VIFPVBQESA-N 0.000 claims description 3
- 229960004692 perflenapent Drugs 0.000 claims description 3
- NJCBUSHGCBERSK-UHFFFAOYSA-N perfluoropentane Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F NJCBUSHGCBERSK-UHFFFAOYSA-N 0.000 claims description 3
- 229960002895 phenylbutazone Drugs 0.000 claims description 3
- VYMDGNCVAMGZFE-UHFFFAOYSA-N phenylbutazonum Chemical compound O=C1C(CCCC)C(=O)N(C=2C=CC=CC=2)N1C1=CC=CC=C1 VYMDGNCVAMGZFE-UHFFFAOYSA-N 0.000 claims description 3
- 229960002702 piroxicam Drugs 0.000 claims description 3
- 108091092562 ribozyme Proteins 0.000 claims description 3
- 229960000654 sulfafurazole Drugs 0.000 claims description 3
- 229960000604 valproic acid Drugs 0.000 claims description 3
- 239000013598 vector Substances 0.000 claims description 3
- OWEGMIWEEQEYGQ-UHFFFAOYSA-N 100676-05-9 Natural products OC1C(O)C(O)C(CO)OC1OCC1C(O)C(O)C(O)C(OC2C(OC(O)C(O)C2O)CO)O1 OWEGMIWEEQEYGQ-UHFFFAOYSA-N 0.000 claims description 2
- GUBGYTABKSRVRQ-XLOQQCSPSA-N Alpha-Lactose Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1O[C@@H]1[C@@H](CO)O[C@H](O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-XLOQQCSPSA-N 0.000 claims description 2
- 229920002307 Dextran Polymers 0.000 claims description 2
- 239000005715 Fructose Substances 0.000 claims description 2
- 229930091371 Fructose Natural products 0.000 claims description 2
- RFSUNEUAIZKAJO-ARQDHWQXSA-N Fructose Chemical compound OC[C@H]1O[C@](O)(CO)[C@@H](O)[C@@H]1O RFSUNEUAIZKAJO-ARQDHWQXSA-N 0.000 claims description 2
- GUBGYTABKSRVRQ-QKKXKWKRSA-N Lactose Natural products OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)C(O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-QKKXKWKRSA-N 0.000 claims description 2
- GUBGYTABKSRVRQ-PICCSMPSSA-N Maltose Natural products O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]1O[C@@H]1[C@@H](CO)OC(O)[C@H](O)[C@H]1O GUBGYTABKSRVRQ-PICCSMPSSA-N 0.000 claims description 2
- 239000007900 aqueous suspension Substances 0.000 claims description 2
- WQZGKKKJIJFFOK-VFUOTHLCSA-N beta-D-glucose Chemical compound OC[C@H]1O[C@@H](O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-VFUOTHLCSA-N 0.000 claims description 2
- GUBGYTABKSRVRQ-QUYVBRFLSA-N beta-maltose Chemical compound OC[C@H]1O[C@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@@H]1O GUBGYTABKSRVRQ-QUYVBRFLSA-N 0.000 claims description 2
- 150000002016 disaccharides Chemical class 0.000 claims description 2
- 239000008101 lactose Substances 0.000 claims description 2
- 150000002772 monosaccharides Chemical class 0.000 claims description 2
- 239000013612 plasmid Substances 0.000 claims description 2
- 239000013603 viral vector Substances 0.000 claims description 2
- 108010054176 apotransferrin Proteins 0.000 claims 2
- QYSPLQLAKJAUJT-UHFFFAOYSA-N piroxicam Chemical compound OC=1C2=CC=CC=C2S(=O)(=O)N(C)C=1C(=O)NC1=CC=CC=N1 QYSPLQLAKJAUJT-UHFFFAOYSA-N 0.000 claims 2
- PJVWKTKQMONHTI-UHFFFAOYSA-N warfarin Chemical compound OC=1C2=CC=CC=C2OC(=O)C=1C(CC(=O)C)C1=CC=CC=C1 PJVWKTKQMONHTI-UHFFFAOYSA-N 0.000 claims 2
- 229960005080 warfarin Drugs 0.000 claims 2
- 108020005187 Oligonucleotide Probes Proteins 0.000 claims 1
- 239000002751 oligonucleotide probe Substances 0.000 claims 1
- JLCPHMBAVCMARE-UHFFFAOYSA-N [3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[3-[[3-[[3-[[3-[[3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-[[5-(2-amino-6-oxo-1H-purin-9-yl)-3-hydroxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxyoxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(5-methyl-2,4-dioxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(6-aminopurin-9-yl)oxolan-2-yl]methoxy-hydroxyphosphoryl]oxy-5-(4-amino-2-oxopyrimidin-1-yl)oxolan-2-yl]methyl [5-(6-aminopurin-9-yl)-2-(hydroxymethyl)oxolan-3-yl] hydrogen phosphate Polymers Cc1cn(C2CC(OP(O)(=O)OCC3OC(CC3OP(O)(=O)OCC3OC(CC3O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c3nc(N)[nH]c4=O)C(COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3COP(O)(=O)OC3CC(OC3CO)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3ccc(N)nc3=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cc(C)c(=O)[nH]c3=O)n3cc(C)c(=O)[nH]c3=O)n3ccc(N)nc3=O)n3cc(C)c(=O)[nH]c3=O)n3cnc4c3nc(N)[nH]c4=O)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)n3cnc4c(N)ncnc34)O2)c(=O)[nH]c1=O JLCPHMBAVCMARE-UHFFFAOYSA-N 0.000 abstract description 21
- 229940079593 drug Drugs 0.000 abstract description 19
- 239000003795 chemical substances by application Substances 0.000 abstract description 17
- 230000001225 therapeutic effect Effects 0.000 abstract description 14
- 229940124597 therapeutic agent Drugs 0.000 abstract description 7
- 239000008194 pharmaceutical composition Substances 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 4
- 230000027455 binding Effects 0.000 description 32
- 229940046166 oligodeoxynucleotide Drugs 0.000 description 31
- 230000000692 anti-sense effect Effects 0.000 description 15
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 11
- 238000002560 therapeutic procedure Methods 0.000 description 11
- 239000011780 sodium chloride Substances 0.000 description 10
- 241001465754 Metazoa Species 0.000 description 9
- 241000700159 Rattus Species 0.000 description 9
- 239000007788 liquid Substances 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- 238000012986 modification Methods 0.000 description 8
- 230000004048 modification Effects 0.000 description 8
- 238000002604 ultrasonography Methods 0.000 description 8
- 108020004414 DNA Proteins 0.000 description 7
- 210000004027 cell Anatomy 0.000 description 7
- 238000009826 distribution Methods 0.000 description 7
- 238000002347 injection Methods 0.000 description 7
- 239000007924 injection Substances 0.000 description 7
- 239000000523 sample Substances 0.000 description 7
- 230000004622 sleep time Effects 0.000 description 7
- 239000002299 complementary DNA Substances 0.000 description 6
- 239000002872 contrast media Substances 0.000 description 6
- -1 erythrocytes Proteins 0.000 description 6
- 210000004185 liver Anatomy 0.000 description 6
- 238000013459 approach Methods 0.000 description 5
- 230000008901 benefit Effects 0.000 description 5
- 239000012867 bioactive agent Substances 0.000 description 5
- 238000012377 drug delivery Methods 0.000 description 5
- MHMNJMPURVTYEJ-UHFFFAOYSA-N fluorescein-5-isothiocyanate Chemical compound O1C(=O)C2=CC(N=C=S)=CC=C2C21C1=CC=C(O)C=C1OC1=CC(O)=CC=C21 MHMNJMPURVTYEJ-UHFFFAOYSA-N 0.000 description 5
- 230000002285 radioactive effect Effects 0.000 description 5
- 241000282412 Homo Species 0.000 description 4
- 229910019142 PO4 Inorganic materials 0.000 description 4
- 108010087776 Proto-Oncogene Proteins c-myb Proteins 0.000 description 4
- 102000009096 Proto-Oncogene Proteins c-myb Human genes 0.000 description 4
- 229960000074 biopharmaceutical Drugs 0.000 description 4
- 230000021615 conjugation Effects 0.000 description 4
- 238000000684 flow cytometry Methods 0.000 description 4
- UYXAWHWODHRRMR-UHFFFAOYSA-N hexobarbital Chemical compound O=C1N(C)C(=O)NC(=O)C1(C)C1=CCCCC1 UYXAWHWODHRRMR-UHFFFAOYSA-N 0.000 description 4
- 229960002456 hexobarbital Drugs 0.000 description 4
- 239000002502 liposome Substances 0.000 description 4
- 210000001589 microsome Anatomy 0.000 description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 4
- 239000010452 phosphate Substances 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- 238000000638 solvent extraction Methods 0.000 description 4
- 108091035539 telomere Proteins 0.000 description 4
- 102000055501 telomere Human genes 0.000 description 4
- 206010013710 Drug interaction Diseases 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 108010001336 Horseradish Peroxidase Proteins 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 238000010364 biochemical engineering Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000000295 complement effect Effects 0.000 description 3
- 238000009792 diffusion process Methods 0.000 description 3
- 238000002651 drug therapy Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000003384 imaging method Methods 0.000 description 3
- 238000001727 in vivo Methods 0.000 description 3
- 230000003993 interaction Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000004060 metabolic process Effects 0.000 description 3
- 229940021182 non-steroidal anti-inflammatory drug Drugs 0.000 description 3
- 210000000056 organ Anatomy 0.000 description 3
- 230000000144 pharmacologic effect Effects 0.000 description 3
- DDBREPKUVSBGFI-UHFFFAOYSA-N phenobarbital Chemical compound C=1C=CC=CC=1C1(CC)C(=O)NC(=O)NC1=O DDBREPKUVSBGFI-UHFFFAOYSA-N 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 108020000948 Antisense Oligonucleotides Proteins 0.000 description 2
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 108091003079 Bovine Serum Albumin Proteins 0.000 description 2
- 238000009010 Bradford assay Methods 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 2
- ZHNUHDYFZUAESO-UHFFFAOYSA-N Formamide Chemical compound NC=O ZHNUHDYFZUAESO-UHFFFAOYSA-N 0.000 description 2
- 101000957383 Homo sapiens Cytochrome P450 2B6 Proteins 0.000 description 2
- 241000124008 Mammalia Species 0.000 description 2
- 229920001213 Polysorbate 20 Polymers 0.000 description 2
- 206010038848 Retinal detachment Diseases 0.000 description 2
- 229910018503 SF6 Inorganic materials 0.000 description 2
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 2
- RYYWUUFWQRZTIU-UHFFFAOYSA-N Thiophosphoric acid Chemical class OP(O)(S)=O RYYWUUFWQRZTIU-UHFFFAOYSA-N 0.000 description 2
- 102000004338 Transferrin Human genes 0.000 description 2
- 108090000901 Transferrin Proteins 0.000 description 2
- 238000007792 addition Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 230000003556 anti-epileptic effect Effects 0.000 description 2
- 239000001961 anticonvulsive agent Substances 0.000 description 2
- 239000002246 antineoplastic agent Substances 0.000 description 2
- 229940041181 antineoplastic drug Drugs 0.000 description 2
- 230000000975 bioactive effect Effects 0.000 description 2
- 230000003115 biocidal effect Effects 0.000 description 2
- 229940098773 bovine serum albumin Drugs 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 125000002091 cationic group Chemical group 0.000 description 2
- 230000004700 cellular uptake Effects 0.000 description 2
- 238000012512 characterization method Methods 0.000 description 2
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 2
- 108010087959 dextrose albumin solution Proteins 0.000 description 2
- 238000010494 dissociation reaction Methods 0.000 description 2
- 230000005593 dissociations Effects 0.000 description 2
- AUZONCFQVSMFAP-UHFFFAOYSA-N disulfiram Chemical compound CCN(CC)C(=S)SSC(=S)N(CC)CC AUZONCFQVSMFAP-UHFFFAOYSA-N 0.000 description 2
- 238000009510 drug design Methods 0.000 description 2
- 238000002592 echocardiography Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 238000001415 gene therapy Methods 0.000 description 2
- 150000004676 glycans Chemical class 0.000 description 2
- 238000000338 in vitro Methods 0.000 description 2
- 238000010253 intravenous injection Methods 0.000 description 2
- 210000003734 kidney Anatomy 0.000 description 2
- 239000003446 ligand Substances 0.000 description 2
- 238000005567 liquid scintillation counting Methods 0.000 description 2
- 210000004072 lung Anatomy 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 108020004999 messenger RNA Proteins 0.000 description 2
- 239000004005 microsphere Substances 0.000 description 2
- 230000002107 myocardial effect Effects 0.000 description 2
- 239000000041 non-steroidal anti-inflammatory agent Substances 0.000 description 2
- 231100000252 nontoxic Toxicity 0.000 description 2
- 230000003000 nontoxic effect Effects 0.000 description 2
- 238000002515 oligonucleotide synthesis Methods 0.000 description 2
- 239000008188 pellet Substances 0.000 description 2
- 239000008177 pharmaceutical agent Substances 0.000 description 2
- 229960002695 phenobarbital Drugs 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000000256 polyoxyethylene sorbitan monolaurate Substances 0.000 description 2
- 235000010486 polyoxyethylene sorbitan monolaurate Nutrition 0.000 description 2
- 229920001282 polysaccharide Polymers 0.000 description 2
- 239000005017 polysaccharide Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- HSSLDCABUXLXKM-UHFFFAOYSA-N resorufin Chemical compound C1=CC(=O)C=C2OC3=CC(O)=CC=C3N=C21 HSSLDCABUXLXKM-UHFFFAOYSA-N 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000004264 retinal detachment Effects 0.000 description 2
- 235000000346 sugar Nutrition 0.000 description 2
- SFZCNBIFKDRMGX-UHFFFAOYSA-N sulfur hexafluoride Chemical compound FS(F)(F)(F)(F)F SFZCNBIFKDRMGX-UHFFFAOYSA-N 0.000 description 2
- 229960000909 sulfur hexafluoride Drugs 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000001890 transfection Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 239000012581 transferrin Substances 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000003612 virological effect Effects 0.000 description 2
- 108091032973 (ribonucleotides)n+m Proteins 0.000 description 1
- KMEMIMRPZGDOMG-UHFFFAOYSA-N 2-cyanoethoxyphosphonamidous acid Chemical class NP(O)OCCC#N KMEMIMRPZGDOMG-UHFFFAOYSA-N 0.000 description 1
- ZPSOKQFFOYYPKC-UHFFFAOYSA-N 7-pentoxyphenoxazin-3-one Chemical compound C1=CC(=O)C=C2OC3=CC(OCCCCC)=CC=C3N=C21 ZPSOKQFFOYYPKC-UHFFFAOYSA-N 0.000 description 1
- 108010056388 Albunex Proteins 0.000 description 1
- 239000004382 Amylase Substances 0.000 description 1
- 102000013142 Amylases Human genes 0.000 description 1
- 108010065511 Amylases Proteins 0.000 description 1
- 108010002913 Asialoglycoproteins Proteins 0.000 description 1
- GUBGYTABKSRVRQ-DCSYEGIMSA-N Beta-Lactose Chemical compound OC[C@H]1O[C@@H](O[C@H]2[C@H](O)[C@@H](O)[C@H](O)O[C@@H]2CO)[C@H](O)[C@@H](O)[C@H]1O GUBGYTABKSRVRQ-DCSYEGIMSA-N 0.000 description 1
- 241000282465 Canis Species 0.000 description 1
- 101710132601 Capsid protein Proteins 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical group [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229930186147 Cephalosporin Natural products 0.000 description 1
- 101710094648 Coat protein Proteins 0.000 description 1
- 102100038739 Cytochrome P450 2B6 Human genes 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000012286 ELISA Assay Methods 0.000 description 1
- 102000004533 Endonucleases Human genes 0.000 description 1
- 108010042407 Endonucleases Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 241000283073 Equus caballus Species 0.000 description 1
- 108060002716 Exonuclease Proteins 0.000 description 1
- 102100021181 Golgi phosphoprotein 3 Human genes 0.000 description 1
- 241000721701 Lynx Species 0.000 description 1
- 101710125418 Major capsid protein Proteins 0.000 description 1
- UEZVMMHDMIWARA-UHFFFAOYSA-N Metaphosphoric acid Chemical compound OP(=O)=O UEZVMMHDMIWARA-UHFFFAOYSA-N 0.000 description 1
- 241000711408 Murine respirovirus Species 0.000 description 1
- ACFIXJIJDZMPPO-NNYOXOHSSA-N NADPH Chemical compound C1=CCC(C(=O)N)=CN1[C@H]1[C@H](O)[C@H](O)[C@@H](COP(O)(=O)OP(O)(=O)OC[C@@H]2[C@H]([C@@H](OP(O)(O)=O)[C@@H](O2)N2C3=NC=NC(N)=C3N=C2)O)O1 ACFIXJIJDZMPPO-NNYOXOHSSA-N 0.000 description 1
- 206010028980 Neoplasm Diseases 0.000 description 1
- 101710163270 Nuclease Proteins 0.000 description 1
- 108091028043 Nucleic acid sequence Proteins 0.000 description 1
- 101710141454 Nucleoprotein Proteins 0.000 description 1
- 229930012538 Paclitaxel Natural products 0.000 description 1
- CXOFVDLJLONNDW-UHFFFAOYSA-N Phenytoin Chemical compound N1C(=O)NC(=O)C1(C=1C=CC=CC=1)C1=CC=CC=C1 CXOFVDLJLONNDW-UHFFFAOYSA-N 0.000 description 1
- 101710083689 Probable capsid protein Proteins 0.000 description 1
- PYMYPHUHKUWMLA-LMVFSUKVSA-N Ribose Natural products OC[C@@H](O)[C@@H](O)[C@@H](O)C=O PYMYPHUHKUWMLA-LMVFSUKVSA-N 0.000 description 1
- 206010039897 Sedation Diseases 0.000 description 1
- 229920002472 Starch Polymers 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 241000700605 Viruses Species 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- ISXSJGHXHUZXNF-LXZPIJOJSA-N [(3s,8s,9s,10r,13r,14s,17r)-10,13-dimethyl-17-[(2r)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1h-cyclopenta[a]phenanthren-3-yl] n-[2-(dimethylamino)ethyl]carbamate;hydrochloride Chemical compound Cl.C1C=C2C[C@@H](OC(=O)NCCN(C)C)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 ISXSJGHXHUZXNF-LXZPIJOJSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- HMFHBZSHGGEWLO-UHFFFAOYSA-N alpha-D-Furanose-Ribose Natural products OCC1OC(O)C(O)C1O HMFHBZSHGGEWLO-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 235000019418 amylase Nutrition 0.000 description 1
- 230000000843 anti-fungal effect Effects 0.000 description 1
- 239000002260 anti-inflammatory agent Substances 0.000 description 1
- 229940124599 anti-inflammatory drug Drugs 0.000 description 1
- 230000002785 anti-thrombosis Effects 0.000 description 1
- 239000003146 anticoagulant agent Substances 0.000 description 1
- 229940127219 anticoagulant drug Drugs 0.000 description 1
- 229940121375 antifungal agent Drugs 0.000 description 1
- 239000000427 antigen Substances 0.000 description 1
- 102000036639 antigens Human genes 0.000 description 1
- 108091007433 antigens Proteins 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 239000012298 atmosphere Substances 0.000 description 1
- 230000004071 biological effect Effects 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 210000004204 blood vessel Anatomy 0.000 description 1
- 230000036760 body temperature Effects 0.000 description 1
- 230000037396 body weight Effects 0.000 description 1
- 239000012152 bradford reagent Substances 0.000 description 1
- 229940124587 cephalosporin Drugs 0.000 description 1
- 150000001780 cephalosporins Chemical class 0.000 description 1
- 235000012000 cholesterol Nutrition 0.000 description 1
- 238000004587 chromatography analysis Methods 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 230000009089 cytolysis Effects 0.000 description 1
- 231100000135 cytotoxicity Toxicity 0.000 description 1
- 230000003013 cytotoxicity Effects 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000006900 dealkylation reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000004925 denaturation Methods 0.000 description 1
- 230000036425 denaturation Effects 0.000 description 1
- 239000000032 diagnostic agent Substances 0.000 description 1
- 229940039227 diagnostic agent Drugs 0.000 description 1
- NAGJZTKCGNOGPW-UHFFFAOYSA-K dioxido-sulfanylidene-sulfido-$l^{5}-phosphane Chemical compound [O-]P([O-])([S-])=S NAGJZTKCGNOGPW-UHFFFAOYSA-K 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 208000035475 disorder Diseases 0.000 description 1
- 239000002552 dosage form Substances 0.000 description 1
- 238000001647 drug administration Methods 0.000 description 1
- 239000003937 drug carrier Substances 0.000 description 1
- 238000009513 drug distribution Methods 0.000 description 1
- 239000002961 echo contrast media Substances 0.000 description 1
- 230000007515 enzymatic degradation Effects 0.000 description 1
- 210000003743 erythrocyte Anatomy 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 102000013165 exonuclease Human genes 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000014509 gene expression Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000001802 infusion Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000001990 intravenous administration Methods 0.000 description 1
- 150000002632 lipids Chemical class 0.000 description 1
- 238000001638 lipofection Methods 0.000 description 1
- 239000006194 liquid suspension Substances 0.000 description 1
- 239000002171 loop diuretic Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- YACKEPLHDIMKIO-UHFFFAOYSA-N methylphosphonic acid Chemical compound CP(O)(O)=O YACKEPLHDIMKIO-UHFFFAOYSA-N 0.000 description 1
- 230000003228 microsomal effect Effects 0.000 description 1
- 229930027945 nicotinamide-adenine dinucleotide Natural products 0.000 description 1
- 230000009871 nonspecific binding Effects 0.000 description 1
- 201000005111 ocular hyperemia Diseases 0.000 description 1
- 229940124276 oligodeoxyribonucleotide Drugs 0.000 description 1
- 229960001592 paclitaxel Drugs 0.000 description 1
- 238000007911 parenteral administration Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000010412 perfusion Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229960002036 phenytoin Drugs 0.000 description 1
- PTMHPRAIXMAOOB-UHFFFAOYSA-L phosphoramidate Chemical compound NP([O-])([O-])=O PTMHPRAIXMAOOB-UHFFFAOYSA-L 0.000 description 1
- SXADIBFZNXBEGI-UHFFFAOYSA-N phosphoramidous acid Chemical compound NP(O)O SXADIBFZNXBEGI-UHFFFAOYSA-N 0.000 description 1
- 239000013600 plasmid vector Substances 0.000 description 1
- 229920000729 poly(L-lysine) polymer Polymers 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 210000003240 portal vein Anatomy 0.000 description 1
- 239000008057 potassium phosphate buffer Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000011546 protein dye Substances 0.000 description 1
- 239000012460 protein solution Substances 0.000 description 1
- 238000011002 quantification Methods 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 230000001177 retroviral effect Effects 0.000 description 1
- 125000000548 ribosyl group Chemical group C1([C@H](O)[C@H](O)[C@H](O1)CO)* 0.000 description 1
- 230000036280 sedation Effects 0.000 description 1
- 230000001624 sedative effect Effects 0.000 description 1
- 235000017557 sodium bicarbonate Nutrition 0.000 description 1
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 1
- 238000013222 sprague-dawley male rat Methods 0.000 description 1
- 235000019698 starch Nutrition 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005987 sulfurization reaction Methods 0.000 description 1
- 239000006228 supernatant Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 230000001839 systemic circulation Effects 0.000 description 1
- RCINICONZNJXQF-MZXODVADSA-N taxol Chemical compound O([C@@H]1[C@@]2(C[C@@H](C(C)=C(C2(C)C)[C@H](C([C@]2(C)[C@@H](O)C[C@H]3OC[C@]3([C@H]21)OC(C)=O)=O)OC(=O)C)OC(=O)[C@H](O)[C@@H](NC(=O)C=1C=CC=CC=1)C=1C=CC=CC=1)O)C(=O)C1=CC=CC=C1 RCINICONZNJXQF-MZXODVADSA-N 0.000 description 1
- 231100001274 therapeutic index Toxicity 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000013518 transcription Methods 0.000 description 1
- 230000035897 transcription Effects 0.000 description 1
- PIEPQKCYPFFYMG-UHFFFAOYSA-N tris acetate Chemical compound CC(O)=O.OCC(N)(CO)CO PIEPQKCYPFFYMG-UHFFFAOYSA-N 0.000 description 1
- 238000012285 ultrasound imaging Methods 0.000 description 1
- 210000005167 vascular cell Anatomy 0.000 description 1
- 210000002845 virion Anatomy 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229930195724 β-lactose Natural products 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K41/00—Medicinal preparations obtained by treating materials with wave energy or particle radiation ; Therapies using these preparations
- A61K41/0028—Disruption, e.g. by heat or ultrasounds, sonophysical or sonochemical activation, e.g. thermosensitive or heat-sensitive liposomes, disruption of calculi with a medicinal preparation and ultrasounds
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K47/00—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient
- A61K47/50—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates
- A61K47/69—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit
- A61K47/6921—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere
- A61K47/6925—Medicinal preparations characterised by the non-active ingredients used, e.g. carriers or inert additives; Targeting or modifying agents chemically bound to the active ingredient the non-active ingredient being chemically bound to the active ingredient, e.g. polymer-drug conjugates the conjugate being characterised by physical or galenical forms, e.g. emulsion, particle, inclusion complex, stent or kit the form being a particulate, a powder, an adsorbate, a bead or a sphere the form being a microcapsule, nanocapsule, microbubble or nanobubble
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
- A61K49/00—Preparations for testing in vivo
- A61K49/22—Echographic preparations; Ultrasound imaging preparations ; Optoacoustic imaging preparations
- A61K49/222—Echographic preparations; Ultrasound imaging preparations ; Optoacoustic imaging preparations characterised by a special physical form, e.g. emulsions, liposomes
- A61K49/223—Microbubbles, hollow microspheres, free gas bubbles, gas microspheres
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P1/00—Drugs for disorders of the alimentary tract or the digestive system
- A61P1/16—Drugs for disorders of the alimentary tract or the digestive system for liver or gallbladder disorders, e.g. hepatoprotective agents, cholagogues, litholytics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P13/00—Drugs for disorders of the urinary system
- A61P13/12—Drugs for disorders of the urinary system of the kidneys
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P25/00—Drugs for disorders of the nervous system
- A61P25/08—Antiepileptics; Anticonvulsants
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P29/00—Non-central analgesic, antipyretic or antiinflammatory agents, e.g. antirheumatic agents; Non-steroidal antiinflammatory drugs [NSAID]
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/04—Antibacterial agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P31/00—Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
- A61P31/10—Antimycotics
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P35/00—Antineoplastic agents
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/02—Antithrombotic agents; Anticoagulants; Platelet aggregation inhibitors
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
- A61P7/00—Drugs for disorders of the blood or the extracellular fluid
- A61P7/10—Antioedematous agents; Diuretics
Abstract
The invention relates to a new and improved pharmaceutical composition and method for delivery of therapeutic agents. The methods and composition of the invention can be used with several therapeutic agents and can achieve site specific delivery of a therapeutic or diagnostic substance. This can allow for lower doses and for improved efficacy with drugs which traditionally reach targeted sites and can result in improved utility for agents such as oligonucleotides and polynucleotides which are plagued with problems with biodistribution.
Description
TITLE: COMPOSITIONS AND METHODS FOR ALTERING THE
BIODISTRIBUTION OF BIOLOGICAL AGENTS
FIELD OF THE INVENTION
This invention relates to a new and improved pharmaceutical composition and method for delivery of bioactive substances. The methods and composition of the invention can be used with several agents and can achieve site specific delivery of a biologically active substances. This can allow for lower doses and for improved efficacy with drugs particularly agents such as 1 o oligonucleotides which are plagued with problems in achieving therapeutic concentrations at targeted organs.
BACKGROUND OF THE INVENTION
Drug delivery techniques are employed in the formulation of all drug therapy to augment drug availability, to reduce drug dose, and consequently to reduce drug-induced side effects. These techniques serve to control, regulate, and target the release of drugs in the body. The goals have been to provide less frequent drug administration, to maintain constant and continuous therapeutic levels of a drug in the systemic circulation or at a specific target organ site, to achieve a reduction in undesirable side effects, and to promote a reduction in the amount and dose concentration required to realize the desired therapeutic benefit.
To date, drug delivery systems have included drug carriers based upon proteins, polysaccharides, synthetic polymers, erythrocytes, DNA and liposomes. New generation biologicals such as monoclonal antibodies, gene ~
therapy vectors, anti-cancer drugs such as Taxol, viral based drugs, and oligo and poly nucleotides have presented several problems with regard to delivery.
In fact drug delivery may be the primary hurdle to achieving mainstream therapeutic use of these biologics whose initial potential seemed unlimited but 3 o whose therapeutic parameters have prevented realization of full benefit.
Synthetic oligodeoxyribonucleotides which are chemically modified to confer nuclease resistance represent a fundamentally different approach to * Trademark 1 drug therapy. The most common applications to date are antisense oligos with sequences complementary to a specific targeted mRNA sequence. An antisense oligonucleotide approach to therapy involves a remarkably simple and specific drug design concept in which the oligo causes a mechanistic intervention in the processes of translation or an earlier processing event.
The advantage of this approach is the potential for gene-specific actions which should be reflected in a relatively low dose and minimal non-targeted side effects.
Phosphorothioate analogs of polynucleotides have chiral internucleoside linkages in which one of the non-bridging ligands is sulfur. The phosphorothioate analog is currently the most commonly employed analogue in biological studies including both in uitro and in vivo. The most apparent disadvantage of phosphorothioate oligonucleotides include the high cost of preparation of sufficient amounts of high quality material and non-specific binding to proteins. Hence, the primary advantage of antisense approach (low dose and minimal side effects) fall short of expectations.
Drug delivery efforts with regard to oligonucleotides and polynucleotides have focused on two key challenges; transfection of oligonucleotides into cells and alteration of distribution of oligonucleotides in, ULUO.
Transfection involves the enhancement of in vitro cellular uptake.
Biological approaches to improve uptake have included viral vectors such as reconstituted viruses and pseudo virions, and chemicals such as liposomes.
Methods to improve biodistribution have focused on such things as cationic lipids, which are postulated to increase cellular uptake of drugs due to the positively charged lipid attraction to the negatively charged surfaces of most cells.
Lipofection and DC-cholesterol liposomes have been reported to enhance gene transfer into vascular cells in vivo when administered by catheter.
Cationic lipid DNA complexes have also been reported to result in effective gene transfer into mouse lungs after intratracheal administration.
. ....___,,._...._..e._._._...v...._._.....,.____,...._..... _.. y. .. .
Cationic liposomal delivery of oligonucleotides has also been accomplished however, altered distribution to the lung and liver was experienced. Asialoglycoprotein poly(L)-lysine complexes have met with hmited success as well as complexation with Sendai virus coat protein containing liposomes. Toxicity and biodistribution, however, have remained significant issues.
From the foregoing it can be seen that a targeted drug delivery system for delivery of biologics, particularly poly and oligo nucleotides is needed for these drugs to achieve their fullest potential.
One object of this invention is to provide a novel composition of matter to deliver a pharmaceutical agent to a targeted site in vivo.
Another object of the invention is to provide a method for delivering a pharmaceutical agent increasing drug bioavailability and decreasing toxicity.
Other objects of the inventions will become apparent from the description of the invention which follows.
SUMMARY OF THE INVENTION
According to the invention a new biologically active agent dehvery method and composition are disclosed. The compositions and methods can be used to deliver agents such as therapeutics or diagnostics which have been plagued with delivery problems such as oligonucleotides as well as traditional agents and can drastically reduce the effective dosages of each, increasing the therapeutic index and improving bioavailability. This in turn can reduce drug cytotoxicity and side effects.
The invention employs conjugation of the biologic agent with a filmogenic protein which is formed as a protein shell microbubble encapsulating an insoluble gas. The composition is prepared as an aqueous suspension of a plurality of the microbubbles for parenteral administration.
Conjugation of the biologic with albumin or other such protein encapsulated microbubbles can allow for targeted delivery of the biologic to alternate including those which tradi.tionally interact with the protein.
DESCRIPTION OF THE FIGURES
Figure 1 is a Lineweaver-Burke plot of the binding data for PESDA
microbubbles with PS-ODN. The equilibrium dissociation constant Km (calculated for the 7 concentrations which were run in duplicate) for the binding to the microbubbles was 1.76 X 10-5M. (r2 = 0.999; Y-int = 0.0566; 7 concentrations). This is nearly within the range observed for binding a 15mer PS-ODN with sequence 5'd(AACGTTGAGGGGCAT)-3' (SEQ ID NO: 1) to human serum albumin in solution of 3.7 - 4.8 X 10-5M previously reported Srinivasan SK et al, "Characterization of binding sites, extent of binding, and drug interactions of oligonucleotides with albumin. Antisen Res. Dev. 5:131, 1995.
DETAILED DESCRIPTION OF THE INVENTION
Ultrasonic imaging has long been used as a diagnostic tool to aid in therapeutic procedures. It is based on the principle that waves of sound energy can be focused upon an area of interest and reflected to produce an image. Generally an ultrasonic transducer is placed on a body surface overlying the area to be imaged and ultrasonic energy, produced by generating and receiving sound waves, is transmitted. The ultrasonic energy is reflected back to the transducer where it is translated into an ultrasonic image. The amount of characteristics of the reflected energy depend upon the acoustic properties of the tissues, and contrast agents which are echogenic are preferably used to create ultrasonic energy in the area of interest and improve the imaging received. For a discussion of contrast echographic instrumentation, see, DeJong and, "Acoustic Properties of Ultrasound Contrast Agents", CIP-GEGEVENS KONINKLIJKE BIBLIOTHEEK, DENHAG (1993), pp. 120 et seq.
Contrast echocardiography has been used to dehneate intracardiac structures, assess valvular competence, and demonstrate intracardiac shunts.
Myocardial contrast echocardiography (MCE) has been used to measure coronary blood flow reserve in humans. MCE has been found to be a safe and ..,.. _ ..__.._. _.__.._.._.._._____T. ..
useful technique for evaluating relative changes in myocardial perfusion and delineating areas at risk.
Ultrasonic vibration has also been used at therapeutic levels in the medical field to increase the absorption of various medicaments. For example in Japanese Patent Kokai number 115591/1977 discloses that percutaneous absorption of a medicament is enhanced by ultrasonic vibration. U.S. Patent Nos. 4,953,565 and 5,007,438 also disclose a technique of percutaneous absorption of medicaments by the aid of ultrasonic vibration. U.S. Patent No.
BIODISTRIBUTION OF BIOLOGICAL AGENTS
FIELD OF THE INVENTION
This invention relates to a new and improved pharmaceutical composition and method for delivery of bioactive substances. The methods and composition of the invention can be used with several agents and can achieve site specific delivery of a biologically active substances. This can allow for lower doses and for improved efficacy with drugs particularly agents such as 1 o oligonucleotides which are plagued with problems in achieving therapeutic concentrations at targeted organs.
BACKGROUND OF THE INVENTION
Drug delivery techniques are employed in the formulation of all drug therapy to augment drug availability, to reduce drug dose, and consequently to reduce drug-induced side effects. These techniques serve to control, regulate, and target the release of drugs in the body. The goals have been to provide less frequent drug administration, to maintain constant and continuous therapeutic levels of a drug in the systemic circulation or at a specific target organ site, to achieve a reduction in undesirable side effects, and to promote a reduction in the amount and dose concentration required to realize the desired therapeutic benefit.
To date, drug delivery systems have included drug carriers based upon proteins, polysaccharides, synthetic polymers, erythrocytes, DNA and liposomes. New generation biologicals such as monoclonal antibodies, gene ~
therapy vectors, anti-cancer drugs such as Taxol, viral based drugs, and oligo and poly nucleotides have presented several problems with regard to delivery.
In fact drug delivery may be the primary hurdle to achieving mainstream therapeutic use of these biologics whose initial potential seemed unlimited but 3 o whose therapeutic parameters have prevented realization of full benefit.
Synthetic oligodeoxyribonucleotides which are chemically modified to confer nuclease resistance represent a fundamentally different approach to * Trademark 1 drug therapy. The most common applications to date are antisense oligos with sequences complementary to a specific targeted mRNA sequence. An antisense oligonucleotide approach to therapy involves a remarkably simple and specific drug design concept in which the oligo causes a mechanistic intervention in the processes of translation or an earlier processing event.
The advantage of this approach is the potential for gene-specific actions which should be reflected in a relatively low dose and minimal non-targeted side effects.
Phosphorothioate analogs of polynucleotides have chiral internucleoside linkages in which one of the non-bridging ligands is sulfur. The phosphorothioate analog is currently the most commonly employed analogue in biological studies including both in uitro and in vivo. The most apparent disadvantage of phosphorothioate oligonucleotides include the high cost of preparation of sufficient amounts of high quality material and non-specific binding to proteins. Hence, the primary advantage of antisense approach (low dose and minimal side effects) fall short of expectations.
Drug delivery efforts with regard to oligonucleotides and polynucleotides have focused on two key challenges; transfection of oligonucleotides into cells and alteration of distribution of oligonucleotides in, ULUO.
Transfection involves the enhancement of in vitro cellular uptake.
Biological approaches to improve uptake have included viral vectors such as reconstituted viruses and pseudo virions, and chemicals such as liposomes.
Methods to improve biodistribution have focused on such things as cationic lipids, which are postulated to increase cellular uptake of drugs due to the positively charged lipid attraction to the negatively charged surfaces of most cells.
Lipofection and DC-cholesterol liposomes have been reported to enhance gene transfer into vascular cells in vivo when administered by catheter.
Cationic lipid DNA complexes have also been reported to result in effective gene transfer into mouse lungs after intratracheal administration.
. ....___,,._...._..e._._._...v...._._.....,.____,...._..... _.. y. .. .
Cationic liposomal delivery of oligonucleotides has also been accomplished however, altered distribution to the lung and liver was experienced. Asialoglycoprotein poly(L)-lysine complexes have met with hmited success as well as complexation with Sendai virus coat protein containing liposomes. Toxicity and biodistribution, however, have remained significant issues.
From the foregoing it can be seen that a targeted drug delivery system for delivery of biologics, particularly poly and oligo nucleotides is needed for these drugs to achieve their fullest potential.
One object of this invention is to provide a novel composition of matter to deliver a pharmaceutical agent to a targeted site in vivo.
Another object of the invention is to provide a method for delivering a pharmaceutical agent increasing drug bioavailability and decreasing toxicity.
Other objects of the inventions will become apparent from the description of the invention which follows.
SUMMARY OF THE INVENTION
According to the invention a new biologically active agent dehvery method and composition are disclosed. The compositions and methods can be used to deliver agents such as therapeutics or diagnostics which have been plagued with delivery problems such as oligonucleotides as well as traditional agents and can drastically reduce the effective dosages of each, increasing the therapeutic index and improving bioavailability. This in turn can reduce drug cytotoxicity and side effects.
The invention employs conjugation of the biologic agent with a filmogenic protein which is formed as a protein shell microbubble encapsulating an insoluble gas. The composition is prepared as an aqueous suspension of a plurality of the microbubbles for parenteral administration.
Conjugation of the biologic with albumin or other such protein encapsulated microbubbles can allow for targeted delivery of the biologic to alternate including those which tradi.tionally interact with the protein.
DESCRIPTION OF THE FIGURES
Figure 1 is a Lineweaver-Burke plot of the binding data for PESDA
microbubbles with PS-ODN. The equilibrium dissociation constant Km (calculated for the 7 concentrations which were run in duplicate) for the binding to the microbubbles was 1.76 X 10-5M. (r2 = 0.999; Y-int = 0.0566; 7 concentrations). This is nearly within the range observed for binding a 15mer PS-ODN with sequence 5'd(AACGTTGAGGGGCAT)-3' (SEQ ID NO: 1) to human serum albumin in solution of 3.7 - 4.8 X 10-5M previously reported Srinivasan SK et al, "Characterization of binding sites, extent of binding, and drug interactions of oligonucleotides with albumin. Antisen Res. Dev. 5:131, 1995.
DETAILED DESCRIPTION OF THE INVENTION
Ultrasonic imaging has long been used as a diagnostic tool to aid in therapeutic procedures. It is based on the principle that waves of sound energy can be focused upon an area of interest and reflected to produce an image. Generally an ultrasonic transducer is placed on a body surface overlying the area to be imaged and ultrasonic energy, produced by generating and receiving sound waves, is transmitted. The ultrasonic energy is reflected back to the transducer where it is translated into an ultrasonic image. The amount of characteristics of the reflected energy depend upon the acoustic properties of the tissues, and contrast agents which are echogenic are preferably used to create ultrasonic energy in the area of interest and improve the imaging received. For a discussion of contrast echographic instrumentation, see, DeJong and, "Acoustic Properties of Ultrasound Contrast Agents", CIP-GEGEVENS KONINKLIJKE BIBLIOTHEEK, DENHAG (1993), pp. 120 et seq.
Contrast echocardiography has been used to dehneate intracardiac structures, assess valvular competence, and demonstrate intracardiac shunts.
Myocardial contrast echocardiography (MCE) has been used to measure coronary blood flow reserve in humans. MCE has been found to be a safe and ..,.. _ ..__.._. _.__.._.._.._._____T. ..
useful technique for evaluating relative changes in myocardial perfusion and delineating areas at risk.
Ultrasonic vibration has also been used at therapeutic levels in the medical field to increase the absorption of various medicaments. For example in Japanese Patent Kokai number 115591/1977 discloses that percutaneous absorption of a medicament is enhanced by ultrasonic vibration. U.S. Patent Nos. 4,953,565 and 5,007,438 also disclose a technique of percutaneous absorption of medicaments by the aid of ultrasonic vibration. U.S. Patent No.
5,315,998 discloses a booster for drug therapy comprising microbubbles in combination ultrasonic energy to allow the medicament to diffuse and penetrate. This discloses the use of therapeutic levels of ultrasound for up to minutes in contrast to the invention which uses diagnostic levels of ultrasound with exposure for much shorter time periods to achieve release of conjugated bioactive agents.
is Applicant has demonstrated that traditional diagnostic ultrasound therapy contrast agents can be used as a specific targeted delivery device to release therapeutic agents at the specifically designated sites of interest thereby altering drug distribution. Surprisingly, this objective can be accomplished with the contrast agent alone and without the use of any 2 o diagnostic ultrasound.
The pharmaceutical composition of the invention comprises a liquid suspension containing microbubbles of an insoluble gas having a diameter of 0.1 to 10 microns. The microbubbles are formed by entrapping microbubbles of a gas into a liquid. The microbubbles are made of various insoluble gases such as fluorocarbon or sulfur hexafluoride gas. The liquid includes any liquid which can form microbubbles. Generally any insoluble gas can be used. It must be gaseous at body temperature and be nontoxic. The gas must also form stable microbubbles of average size of between about.1 and 10 microns in diameter when the pharmaceutical composition is sonicated to form microbubbles. Generally perfluorocarbon gases such as perfluoromethane, perfluoroethane, perfluoropropane, perfluorobutane, perfluoropentane are preferred. Of these gases, perfluoropropane and perfluorobutane are especially preferred because of their demonstrated safety for intraocular injection in humans. They have been used in human studies for intraocular injections to stabilize retinal detachments (Wong and Thompson, Opthamology 95:609-613). Treatment with intraocular perfluoropropane is considered to be the standard of care for treatment of this disorder. The gases must also have a diffusion coefficient and blood solubility lower than nitrogen or oxygen which diffuse once in the internal atmosphere of the blood vessel.
Other inert gases such as sulfur hexafluoride are also useful in the invention provided they have a diffusion coefficient and blood solubility lower than nitrogen or oxygen. The agent of the invention is formulated in a pharmaceutically effective dosage form for peripheral administration to the host. Generally such host is a human host, although other mammalian hosts such as canine or equine can also be subject to this therapy.
The pharmaceutical liquid composition of the invention uses a liquid wherein the microbubbles are stabilized by a filmogenic protein coating.
Suitable proteins include naturally occurring proteins such as albumin, human gamma globulin, human apotransferin, Beta lactose and urease. The invention preferably employs a naturally occurring protein but synthetic proteins may also be used. Preferred is human serum albumin.
It is also optional to use an aqueous solution containing a mixture of a pharmaceutically accepted saccharide e.g., dextrose, in combination with the earlier described protein. In a preferred embodiment the pharmaceutical liquid composition of the invention is the sonicated mixture of commercially available albumin (human), U.S.P. solution (generaIly supplied as 5% or 25%
by weight sterile aqueous solutions), and commercially available dextrose, U.S.P. for intravenous administration. The mixture is sonicated under ambient conditions i.e. room air temperature and pressure and is perfused with an insoluble gas (99.9% by weight) during sonication.
In a most preferred embodiment the pharmaceutical liquid composition includes a two-fold to eight-fold dilution of 5% to 50% by weight of dextrose . ._ ......__--" . ..._. ..._.__._...... T .
and a 2% to 10% by weight of human serum albumin. Exemplary of other saccharide solutions of the invention are aqueous monosaccharide solution (e.g. having the formula C6H1206 such as the hexose sugars, dextrose or fructose or mixtures thereof), aqueous disaccharide solution (e.g. having a formula C12H22011 such as sucrose, lactose or maltose or mixtures thereof), or aqueous polysaccharide solution (e.g. soluble starches having the formula C6H1005(n) wherein n is a whole number integer between 20 and about 200 such as amylase or dextran or mixtures thereof.
The microbubbles are formed by sonication, typically with a sonicating horn. Sonication by ultrasonic energy causes cavitation within the dextrose albumin solution at sites of particulate matter or gas in the fluid. These cavitation sites eventually resonate and produce small microbubbles (about 7 microns in size) which are non-collapsing and stable. In general, sonication conditions which produce concentrations of greater than about 4X108m of between about 5 and about 6 micron microbubbles are preferred. Generally the mixture will be sonicated for about 80 seconds, while being perfused with an insoluble gas.
A second method of preparation includes hand agitating 15 2 ml of sonicated dextrose albumin with 8 2 ml of perfluorocarbon gas prior to sonication. Sonication then proceeds for 80 5 seconds.
These microbubble sizes are particularly ideal since a microbubble must have a mean diameter of less than 10 microns and greater than .1 to be sufficient for transpulmonary passage, and must be stable enough to prevent significant diffusion of gases within the microbubble following intravenous injection and during transit to the target site. The microbubbles are next incubated with the medicament so that the medicament becomes conjugated with the microbubble. Quite unexpectedly it was demonstrated that filmogenic proteins in the form of microbubbles as previously used in contrast agents retain their ability to bind medicaments. This is surprising because traditionally it was thought that in the formation of microbubble contrast agents the protein sphere was made of denatured protein. Applicant has demonstrated that when an insoluble gas instead of air is used for the microbubble, much of the sonication energy is absorbed by the gas and the protein retains its binding activity. Air filled microbubbles do not retain their binding capabilities and cannot be used in the method of the invention.
The therapy involves the use of a pharmaceutical composition conjugated to a protein microbubble of a diameter of about.1 to 10 microns.
The invention uses agents traditionally used in diagnostic ultrasound imaging.
Therapeutic agents useful in the present invention are selected via their ability to bind with the filmogenic protein. For example if the filmogenic protein is albumin, the therapeutic or diagnostic agent can include oligonucleotides (such as antisense or antigen oligos), polynucleotides (such as retroviral, adenoviral, plasmid vectors or probes), or ribozymes all of which can bind with albumin and as such can form a conjugation with the microbubble. A list of drugs which bind to albumin at site 1(which retains its binding capacity) and thus would be useful in the methods and compositions of the present invention in the albumin embodiment follows:
Drug % Albumin Binding Drug Class Naproxen 99.7 NSAID@
Piroxicam 99.3 NSAID
W arfarin 99.0 Anticoagulant Furosemide 98.8 Loop diuretic Phenylbutazone 96.1 NSAID
Valproic Acid 93.0 Antiepileptic Sulfisoxazole 91.4 Sufonimide Antibiotic Ceftriaxone 90-95* Third Generation cephalosporin antibiotic Miconazole 90.7-93.1* Antifungal Phenytoin 89.0 Antiepileptic ONonsteroidal anti inflammatory drug *Represents patient-to-patient variability . ....,.._ _.....a..,_ ... . ....... . . T. . . .
Other drugs which bind with albumin particularly at site 1 would also be useful in this embodiment and can be ascertained by those of skill in the art through Drug Interaction and Pharmacology tests standard to those of skill in the art such as "Drug Information or "Facts and Comparisons" published by Berney Olin updated every quarter. Other such references are widely available in the area. Assays for determination of appropriate protein-therapeutic combinations are disclosed herein and can be used to test any combination for its ability to work with the method of the invention.
According to a preferred embodiment of the invention, protein coated microbubbles of insoluble gas have been found to form stable conjugates with oligonucleotides. The oligo conjugated bubbles are then introduced to the animal and the protein coating directs the conjugated agent to sites of interaction. Ultimately as the bubble dissipates the agent will be released at the tissue site.
This is of particular relevance to oligonucleotide and polynucleotide therapy as the primary hurdle to effective anti-sense, anti-gene, or even gene therapy employing viral or plasmid nucleotide delivery is the ability of the therapeutic to reach the target site at high enough concentrations to achieve a therapeutic effect. Therapeutic sites can include such things as the location of a specific tumor, an organ which due to differential gene activation expresses a particular gene product, the site of an injury or thrombosis, a site for further processing and distribution of the therapeutic etc. Generally the target site is selected based upon the bioprocessing of the $lmogenic protein. For example the kidneys and liver take up albumin and albumin microbubbles can be used to specifically direct the administration of conjugated bioactive agents to these areas. The metabolism and bioprocessing of other filmogenic proteins can be easily obtained through standard pharmacologic texts such as "Basic and Clinical Pharmacology" by Bertram G. Katzung.
is Applicant has demonstrated that traditional diagnostic ultrasound therapy contrast agents can be used as a specific targeted delivery device to release therapeutic agents at the specifically designated sites of interest thereby altering drug distribution. Surprisingly, this objective can be accomplished with the contrast agent alone and without the use of any 2 o diagnostic ultrasound.
The pharmaceutical composition of the invention comprises a liquid suspension containing microbubbles of an insoluble gas having a diameter of 0.1 to 10 microns. The microbubbles are formed by entrapping microbubbles of a gas into a liquid. The microbubbles are made of various insoluble gases such as fluorocarbon or sulfur hexafluoride gas. The liquid includes any liquid which can form microbubbles. Generally any insoluble gas can be used. It must be gaseous at body temperature and be nontoxic. The gas must also form stable microbubbles of average size of between about.1 and 10 microns in diameter when the pharmaceutical composition is sonicated to form microbubbles. Generally perfluorocarbon gases such as perfluoromethane, perfluoroethane, perfluoropropane, perfluorobutane, perfluoropentane are preferred. Of these gases, perfluoropropane and perfluorobutane are especially preferred because of their demonstrated safety for intraocular injection in humans. They have been used in human studies for intraocular injections to stabilize retinal detachments (Wong and Thompson, Opthamology 95:609-613). Treatment with intraocular perfluoropropane is considered to be the standard of care for treatment of this disorder. The gases must also have a diffusion coefficient and blood solubility lower than nitrogen or oxygen which diffuse once in the internal atmosphere of the blood vessel.
Other inert gases such as sulfur hexafluoride are also useful in the invention provided they have a diffusion coefficient and blood solubility lower than nitrogen or oxygen. The agent of the invention is formulated in a pharmaceutically effective dosage form for peripheral administration to the host. Generally such host is a human host, although other mammalian hosts such as canine or equine can also be subject to this therapy.
The pharmaceutical liquid composition of the invention uses a liquid wherein the microbubbles are stabilized by a filmogenic protein coating.
Suitable proteins include naturally occurring proteins such as albumin, human gamma globulin, human apotransferin, Beta lactose and urease. The invention preferably employs a naturally occurring protein but synthetic proteins may also be used. Preferred is human serum albumin.
It is also optional to use an aqueous solution containing a mixture of a pharmaceutically accepted saccharide e.g., dextrose, in combination with the earlier described protein. In a preferred embodiment the pharmaceutical liquid composition of the invention is the sonicated mixture of commercially available albumin (human), U.S.P. solution (generaIly supplied as 5% or 25%
by weight sterile aqueous solutions), and commercially available dextrose, U.S.P. for intravenous administration. The mixture is sonicated under ambient conditions i.e. room air temperature and pressure and is perfused with an insoluble gas (99.9% by weight) during sonication.
In a most preferred embodiment the pharmaceutical liquid composition includes a two-fold to eight-fold dilution of 5% to 50% by weight of dextrose . ._ ......__--" . ..._. ..._.__._...... T .
and a 2% to 10% by weight of human serum albumin. Exemplary of other saccharide solutions of the invention are aqueous monosaccharide solution (e.g. having the formula C6H1206 such as the hexose sugars, dextrose or fructose or mixtures thereof), aqueous disaccharide solution (e.g. having a formula C12H22011 such as sucrose, lactose or maltose or mixtures thereof), or aqueous polysaccharide solution (e.g. soluble starches having the formula C6H1005(n) wherein n is a whole number integer between 20 and about 200 such as amylase or dextran or mixtures thereof.
The microbubbles are formed by sonication, typically with a sonicating horn. Sonication by ultrasonic energy causes cavitation within the dextrose albumin solution at sites of particulate matter or gas in the fluid. These cavitation sites eventually resonate and produce small microbubbles (about 7 microns in size) which are non-collapsing and stable. In general, sonication conditions which produce concentrations of greater than about 4X108m of between about 5 and about 6 micron microbubbles are preferred. Generally the mixture will be sonicated for about 80 seconds, while being perfused with an insoluble gas.
A second method of preparation includes hand agitating 15 2 ml of sonicated dextrose albumin with 8 2 ml of perfluorocarbon gas prior to sonication. Sonication then proceeds for 80 5 seconds.
These microbubble sizes are particularly ideal since a microbubble must have a mean diameter of less than 10 microns and greater than .1 to be sufficient for transpulmonary passage, and must be stable enough to prevent significant diffusion of gases within the microbubble following intravenous injection and during transit to the target site. The microbubbles are next incubated with the medicament so that the medicament becomes conjugated with the microbubble. Quite unexpectedly it was demonstrated that filmogenic proteins in the form of microbubbles as previously used in contrast agents retain their ability to bind medicaments. This is surprising because traditionally it was thought that in the formation of microbubble contrast agents the protein sphere was made of denatured protein. Applicant has demonstrated that when an insoluble gas instead of air is used for the microbubble, much of the sonication energy is absorbed by the gas and the protein retains its binding activity. Air filled microbubbles do not retain their binding capabilities and cannot be used in the method of the invention.
The therapy involves the use of a pharmaceutical composition conjugated to a protein microbubble of a diameter of about.1 to 10 microns.
The invention uses agents traditionally used in diagnostic ultrasound imaging.
Therapeutic agents useful in the present invention are selected via their ability to bind with the filmogenic protein. For example if the filmogenic protein is albumin, the therapeutic or diagnostic agent can include oligonucleotides (such as antisense or antigen oligos), polynucleotides (such as retroviral, adenoviral, plasmid vectors or probes), or ribozymes all of which can bind with albumin and as such can form a conjugation with the microbubble. A list of drugs which bind to albumin at site 1(which retains its binding capacity) and thus would be useful in the methods and compositions of the present invention in the albumin embodiment follows:
Drug % Albumin Binding Drug Class Naproxen 99.7 NSAID@
Piroxicam 99.3 NSAID
W arfarin 99.0 Anticoagulant Furosemide 98.8 Loop diuretic Phenylbutazone 96.1 NSAID
Valproic Acid 93.0 Antiepileptic Sulfisoxazole 91.4 Sufonimide Antibiotic Ceftriaxone 90-95* Third Generation cephalosporin antibiotic Miconazole 90.7-93.1* Antifungal Phenytoin 89.0 Antiepileptic ONonsteroidal anti inflammatory drug *Represents patient-to-patient variability . ....,.._ _.....a..,_ ... . ....... . . T. . . .
Other drugs which bind with albumin particularly at site 1 would also be useful in this embodiment and can be ascertained by those of skill in the art through Drug Interaction and Pharmacology tests standard to those of skill in the art such as "Drug Information or "Facts and Comparisons" published by Berney Olin updated every quarter. Other such references are widely available in the area. Assays for determination of appropriate protein-therapeutic combinations are disclosed herein and can be used to test any combination for its ability to work with the method of the invention.
According to a preferred embodiment of the invention, protein coated microbubbles of insoluble gas have been found to form stable conjugates with oligonucleotides. The oligo conjugated bubbles are then introduced to the animal and the protein coating directs the conjugated agent to sites of interaction. Ultimately as the bubble dissipates the agent will be released at the tissue site.
This is of particular relevance to oligonucleotide and polynucleotide therapy as the primary hurdle to effective anti-sense, anti-gene, or even gene therapy employing viral or plasmid nucleotide delivery is the ability of the therapeutic to reach the target site at high enough concentrations to achieve a therapeutic effect. Therapeutic sites can include such things as the location of a specific tumor, an organ which due to differential gene activation expresses a particular gene product, the site of an injury or thrombosis, a site for further processing and distribution of the therapeutic etc. Generally the target site is selected based upon the bioprocessing of the $lmogenic protein. For example the kidneys and liver take up albumin and albumin microbubbles can be used to specifically direct the administration of conjugated bioactive agents to these areas. The metabolism and bioprocessing of other filmogenic proteins can be easily obtained through standard pharmacologic texts such as "Basic and Clinical Pharmacology" by Bertram G. Katzung.
The method preferred for practicing the delivery therapy of the invention involves obtaining a pharmaceutical liquid agent of the invention, introducing said agent into a host by intravenous injection, intravenously (i.v.
infusion), percutaneously or intramuscularly. The microbubble is then processed in the animal and is taken up and interacted with according to the filmogenic protein which coats the microbubble. Ultimately the bubble dissipates delivering the bioactive at the site of processing of the protein.
It has been previously shown by applicants that microbubble conjugation of bioactive agents can be used in targeted delivery protocols with l0 delivery of the biologic upon application of ultrasound to the target site, causing cavitation of the microbubble and ultimate release of the biologic at the site in interaction with the ultrasound field. Quite unexpectedly, applicant has now discovered that application of ultrasound is not necessary for the targeted delivery of biologics to sites of bioprocessing of the protein coating. The protein traffics the microbubble and conjugate to sites of processing and as the bubbles dissipate the oligo or other biologic is released to interact with the site allowing for a fraction of the biologic to achieve the same biological effect.
In a preferred embodiment the agent of the invention is a perfluorocarbon enhanced sonicated dextrose albumin solution comprised of a sonicated three-fold dilution of 5% human serum albumin with 5% dextrose.
During sonication, the solution is perfused with perfluorocarbon gas for about 80 seconds which lowers the solubility and diffusivity of the microbubble gas.
The resulting microbubbles are concentrated at room temperature for at least about 120 5 minutes wherein the excess solution settles in the sonicating syringe. The microbubbles are then exposed to a therapeutic agent and allowed to interact such that the agent becomes conjugated to the microbubbles. Next the conjugated microbubbles are transferred to a sterile syringe and injected parenterally into a mammal, preferably near the target site of activity of the agent.
Methods of ultrasonic imaging in which microbubbles formed by sonicating an aqueous protein solution are injected into a mammal to alter the acoustic properties of a predetermined area which is then ultrasonically scanned to obtain an image for use in medical procedures is well known. For example see U.S. Patent No. 4,572,203, U.S. Patent No. 4,718,433 and U.S.
Patent No. 4,774,958..
It is the use of these types of contrast agents as a pharmaceutical composition as part of a targeted delivery system that is the novel 1 o improvement of this invention.
The invention has been shown to drastically improve the efficiency and therapeutic activity by altering biodistribution of several drugs including, most notably, anti-sense oligonucleotides which have been traditionally plagued with ineffective pharmacologic parameters, including high clearance rate and toxicity.
This is particularly significant as the microbubble-therapeutic agent therapy can reduce any toxic effects of persons who perhaps could not tolerate certain therapeutics at doses and concentrations necessary to achieve a benefi.cial result.
The protein substance such as human serum albumin is easily metabolized within the body and excreted outside and hence is not harmful to the human body. Further gas trapped within the microbubbles is extremely small and is easily dissolved in blood fluid, perfluoropropane and perfluorobutane have long been known to be safe in humans. Both have been used in humans for intra ocular injections to stabilize retinal detachments.
Wong and Thompson, Ophthalmology 95:609-613. Thus the anti thrombosis agents of the invention are extremely safe and nontoxic for patients.
The invention is particularly useful for delivery of nucleotide sequences in the form of gene therapy vectors, or anti-sense of anti-gene type strategies 3 0 to ultimately alter gene expressions in target cells.
WO 98/00 t 72 PCT/US97/10766 Antisense oligonucleotides represent potential tools in research and therapy by virtue of their ability to specifically inhibit synthesis of target proteins. A major theoretical advantage of these oligos is their potential specificity for binding to one site in the cell. According to one embodiment of the invention a synthetic oligonucleotide of at least 6 nucleotides, preferably complementary to DNA (antigene) or RNA (antisense), which interferes with the process of transcription or translation of endogenous proteins is presented.
Any of the known methods for oligonucleotide synthesis can be used to prepare the oligonucleotides. They are most conveniently prepared using any of the commercially available, automated nucleic acid synthesizers, such as applied biosystems, Inc., DNA synthesizer (Mode1380B). According to manufacturers protocols using phosphoroamidite chemistry. After biosystems (Foster City, CA). Phosphorothioate oligonucleotides were synthesized and purified according to the methods described in Stek and Zahn J.
Chromatography, 326:263-280 and in Applied Biosystems, DNA Synthesizer, User Bulletin, Models 380A-380B-381A-391-EP, December 1989. The oligo is introduced to cells by methods which are known to those of skill in the art.
See Iverson, et al., "Anti-Cancer Drug Design", 1991, 6531-6538.
Traditional limitations of oligonucleotide therapy have been preparation of the oligonucleotide analogue which is substantially resistant to the endo and exonucleases found in the blood and cells of the body. While unmodified oligos have been shown to be effective, several modifications to these oligos has helped alleviate this problem.
Modified or related nucleotides of the present invention can include one or more modifications of the nucleic acid bases, sugar moieties, internucleoside phosphate linkages, or combinations of modifications at these sites. The internucleoside phosphate linkages can be phosphorothioate, phosphoramidate; methylphosphonate, phosphorodithioate and combinations 3 0 of such similar linkages (to produce mix backbone modified oligonucleotides).
Modifications may be internal or at the end(s) of the oligonucleotide molecule and can include additions to the molecule of the internucleoside phosphate linkages, such as cholesterol, diamine compounds with varying numbers of carbon residues between the amino groups, and terminal ribose, deoxyriboase and phosphate modifications which cleave, or crosslink to the opposite chains or to associated enzymes or other proteins which bind to the genome.
These modifications traditionally help shield the oligo from enzymatic degradation within the cell. Any of the above modifications can be used with the method of the invention. However, in preferred embodiment the modification is a phosphorothioate oligonucleotide.
The following examples are for illustration purposes only and are not intended to limit this invention in any way. It will be appreciated by those of skill in the art, that numerous other protein-bioactive agent combinations can be used in the invention and are even contemplated herein. For example, if the filmogenic protein is transferrin, the bioactive agent could be any transferrin binding pharmacologic.
In all the following examples, all parts and percentages are by weight unless otherwise mentioned, all dilutions are by volume.
Phosphorothioate oligonucleotide synthesis Chain extension syntheses were performed on a 1 mole column support on an ABI Model 391 DNA synthesizer (Perkin Elmer, Foster City, CA) or provided by Lynx Therapeutics, Inc. (Hayward CA). The 1 micromole synthesis employed cyanoethyl phosphoroamidites and sulfurization with tetraethylthiuram disulfide as per ABI user Bulletin 58.
Radiolabeled oligonucleotides were synthesized as hydrogen phosphonate material by Glen Research (Bethesda, MD). The uniformly 35S-labeled PS-ODN with sequences 5'-TAT GCT GTG CCG GGG TCT TCG GGC
3' (24-mer complementary to c-myb) (SEQ ID NO:2) and 5' TTAGGG 3' (SEQ
ID NO:3) were incubated in a final volume of 0.5 ml with the perfluorocarbon-exposed sonicated dextrose albumin microbubble solution for 30 minutes at 37 C. The solutions were allowed to stand so that the bubbles could rise to the top and 100 microliters were removed from the clear solution at the bottom and 100 microliters were removed from the top containing the microbubbles.
Preparation of Microbubble Agent Five percent human serum albumin and five percent dextrose were obtained from a commercial source. Three parts of 5% dextrose and one part 5% human serum albumin (total 16 milliliters) were drawn into a 35-milliliter Monojet syringe. Each dextrose albumin sample was hand agitated with 8 2 1 o milliliters of either a fluorocarbon gas (decafluorobutane; molecular weight 238 grams/mole) or 8 2 milliliters of room air, and the sample was then exposed to electromechanical sonication at 20 kilohertz for 80 5 seconds. The mean size of four consecutive samples of the perfluorocarbon-exposed sonicated dextrose albumin (PESDA) microbubbles produced in this manner, as measured with hemocytometry was 4.6 0.4 microns, and mean concentration, as measured by a Coulter counter was 1.4x 109 bubbles/milliliter. The solution of microbubbles was then washed in a 1000 times volume excess of 5% dextrose to remove albumin which was not associated with the microbubbles. The microbubbles were allowed four hours to rise. The lower solution was then removed leaving the washed foam. The washed foam was then mixed with 0.9% sodium chloride.
Binding Assavs The radioactive 24-mer PS-ODN was added to a washed solution of PESDA and room air sonicated dextrose albumin (RA-SDA) microbubbles at a concentration of 5nM. Non-radioactive PS-ODN 20-mer was added to tubes containing radioactive 24-mer in a series of increasing concentrations (0, 3.3, 10, 32.7, 94.5, 167, and 626 M). The suspension of bubbles is mixed by inversion and incubated at 37 C for 60 minutes.
Measurement of Radioactivitv 3 0 Radioactivity in solutions were determined by liquid scintillation counting in a liquid scintillation counter (model LSC7500; Beckman * Trademark Instruments GmbH, Munich, Germany). The sample volume was 100 1 to which 5 ml of Hydrocount biodegradable scintillation cocktail was added and mixed. Samples were counted immediately after each experiment and then again 24 hours later in order to reduce the influence of chemiluminescence and of quenching.
Flow cytometry The uniformity of room air versus perfluorocarbon-containing sonicated dextrose albumin microbubble binding of PS-ODN was determined by flow cytometry. A solution of microbubbles was washed in a 1000 fold excess 1o volume of sterile saline. Three groups of samples were prepared in triplicate as follows; Group A (control) in which 100 l of microbubbles were added to a 900 L of saline, Group B in which 100 /1 of microbubbles were added to 900 L of saline and 2 L of FITC-labeled 20-mer was added (fina120-mer concentration is 151 nM), and group C in which 100 L of microbubbles were added to 800 L of saline, 2 L of FITC-labeled 20-mer and 100 L of unlabeled 20-mer(final concentration is 151nM). The incubations were all conducted for minutes at room temperature.
Washed microbubble suspensions were diluted in sterile saline (Baxter) and then incubated with FITC-labeled PS-ODN. Flow cytometric analysis was 20 performed using a FACStar Plus (Becton Dickinson) equipped with t 100 mW
air-cooled argon laser and the Lysis II acquisition and analysis software.
List mode data were employed for a minimum of 104 collected microbubbles and independent analysis a for each sample.
Study Protocol A variable flow microsphere scanning chamber was developed for the study which is similar to that we have described previously Mor-Avi V., et al "Stability of Albunex microspheres under ultrasonic irradiation; and in vitro study. J Am Soc Echocardiology 7:S29, 1994. This system consists of a circular scanning chamber connected to a Masterflex flow system(Microgon, Inc., 3 0 Laguna Hills California) The scanning chamber was enclosed on each side by water-filled chambers and bound on each side by acoustically transparent * Trademark 15 material. The PS-ODN-labeled PESDA microbubbles (0.1 milliliters) were injected as a bolus over one second proximal to the scanning chamber which then flowed through plastic tubing into a tap water-filled scanning chamber at a controlled flow rate of 100 ml/min. As the bubbles passed through the scanning chamber, the scanner(2.0 Megahertz) frequency, 1.2 Megapascals peak negative pressure) was set to either deliver ultrasound at a conventional 30 Hertz frame rate or was shut off. Following passage through the scanning chamber, the solution was then passed through the same size plastic tubing into a graduated cylinder. The first 10 inilliliters was discarded. Following 1 o this, the next 10 milliliters was allowed to enter into a collection tube.
The collection tube containing the effluent microbubbles was allowed to stand in order to separate microbubbles on the top from whatever free oligonucleotide existed in the lower portion of the sample. Drops from both the upper and lower operation of the effluent were then placed upon a hemocytometer slide and analyzed using a lOX magnification. Photographs of these slides were then made and the number of microbubbles over a 36 square centimeter field were then hand-counted. The upper and lower layers of the remaining effluent were then used for analysis of oligonucleotide content using flow cytometry in the same manner described below.
Microbubble samples exposed to the various oligonucleotide solution were mixed 15(v/v) with a solution of formamide and EDTA and heated to 950 C for 5 minutes. These samples were then examined on an Applied Biosystems Model 373A DNA sequencer with e 20% polyacrylamide gel. The data were acquired with GeneScanner software so that fluorescence intensity area under the curve could be determined.
PhosAhorothioate Oligonucleotide Binding of PESDA versus RA-SDA
Microbubbles The partitioning of PS-ODN to PESDA microbubbles top layer) and non-3 o bubble washed (albumin-free) and unwashed (non-bubble albumin containing) lower layers as counted by liquid scintillation counting are demonstrated in Table 1.
__~_. T
TABLE I OLIGONUCLEOTIDES BINDING TO ALBUMIN OF PESDA
MICROBUBBLES
BUBBLES IN THE PRESENCE OF FREE ALBUMIN
N TOP BOTTOM RATIO
cpm/ 1 cpm/ l TB
TTAGGG 6 125 6.4 92 . 3 6 . 4 1.35 c-myb 6 94.1 17.6 77.3 1.2 1.35 WASHED BUBBLES (NO FREE ALBUMIN) N TOP BOTTOM RATIO
cpm/ l cpm/ l TB
TTAGGG 6 210 10.8 126 8.7 1.67 c-myb 6 200.3 37.4 92.7 15.7 2.16 These data indicate that albumin in the unwashed solution which is not associated with the microbubble will bind to the PS-ODN so that the partitioning of PS-ODN is equivalent between microbubbles(top layer) and the surrounding solution (lower layer; p=HS). Removal of non-microbubble associated albumin (Washed Bubbles in Table 1) does not show a significant partitioning of the PS-ODNs with the PESDA microbubbles (1.67 for TTAGGG
PS-ODN and 2.16 for c-myb PS-ODN). The recovery of total radioactivity in the experiments reported in Table 1 is 96% of the radioactivity added which is not significantly different from 100%.
The affinity of binding of PS-ODN to washed microbubbles was evaluated by addition of increasing amounts of excess non-radioactive PS=ODN as a competing hgand for binding sites. In this case a 20mer PS-ODN with sequence 5'-d(CCC TGC TCC CCC CTG GCT CC)-3' (SEQ ID NO:4) was employed to displace the radioactive 24mer. Albumin protein concentrations in the washed microbubble experiments was 0.28 0.04 mg/ml as determined by the Bradford Assay Bradford M et al "A Rapid and Sensitive Method for the quantification of microgram quantities of protein utilizing the principle of protein-dye binding" anal. Bioche,. 72:248, 1976. The observed binding data are presented as a Lineweaver Burke plot in Figure 1. The equilibrium dissociation constant Km (calculated for the 7 concentrations which were run in duplicate) for the binding to the microbubbles was 1.76 X
10-5 M.
The distribution of FITC-labeled microbubbles is provided in table 2 TABLE 2 DISTRIBUTION OF OLIGONUCLEOTIDE (PS-ODN) BOUND MICROBUBBLES
Control PS-ODN 151nM FITC PS-ODN Excess Unlabeled ODN
No. PE MI PE MI PE MI
1 99.5 2.38 98.9 2109.8 97.8 1753.1 2 99.3 4.07 99.1 2142.3 98.7 1710.9 3 99.4 3.52 99.1 2258.5 99.3 1832.2 mean 3.23 2170 1765 SE 0.50 461 361,2 PE=percent events MI=mean intensity SE=standard error lindicates this mean is significantly different form control, P<0.001 2indicates this mean is significantly different form 151nM, P<0.001 The significant decrease in mean fluorescence intensity in the samples containing excess unlabeled PS-ODN indicates the binding to microbubbles is saturable. Consequently, since the binding is saturable, the nonspecific interactions of PS-ODN with the microbubble surface are limited. A Gaussian distribution of PS-ODN to washed PESDA microbubbles indicated that the albumin on these microbubbles had retained its binding site for the oligonucleotide. The absence of a Gaussian distribution for washed RA-SDA
indicated loss of albumin binding site 1 for this oligonucleotide occurred during sonication of these microbubbles. For a discussion of albumin binding characteristics particularly as they relate to oligonucleotides see Kumar, Shashi et al "Characterization of Binding Sites, Extent of Binding, and Drug Interactions of Oligonucleotides with Albumin" Antisense Research and Development 5: 131-139 (1995), From the foregoing it can be seen that, PS-ODN binds to the albumin in PESDA microbubbles, indicating that the binding site 1 on albumin is biologically active following production of these bubbles by electromechanical sonication.
This binding site affinity is lost when the electromechanical sonication is performed only with room sir. Further, removal of albumin not associated with PESDA
microbubbles by washing shows a significant partitioning of the PS-ODNs with the microbubbles(Table 1). These observations demonstrate that albumin denaturation 1 o does not occur with perfluorocarbon-containing dextrose albumin solutions during sonication as has been suggested with sqnication in the presence of air. The retained bioactivity of albumin(especially at site 1) in PESDA microbubbles was confirmed by the affinity of binding of PS-ODN to washed PESDA microbubbles in the presence of increasing amounts of excess non-radioactive PS-ODN as a competing ligand for binding sites (Table 2). The significant decrease in mean fluorescence intensity in the samples containing excess unlabeled PS=-ODN
indicates the binding to microbubbles is saturable.
ALTERED BIODISTRIBUTION VIA MICROBUBBLE DELIVERY OF
2 o ANTISENSE OLIGOS
According to the invention antisense phosphorothioate oligonucleotides were designed to the cytochrome P450 IIB 1 gene sequence to alter the metabolism of Phenobarbital. The oligonucleotides were conjugated to perfluoropropane exposed sonicated dextrose albumin microbubbles (PESDA) as earlier described and delivered to rats intravenously. The oligonucleotide was synthesized according to the rat cytochrome P450 IIB 1 known sequence and had the following sequence:
GGAGCAAGATACTGGGCTCCAT (SEQ ID NO:5) AAAGAAGAGAGAGAGCAGGGAG (SEQ ID NO:6) Male Sprague-Dawley rats (Sasco, Omaha), were used and weighed between 210 to 290 grams for all studies. They were housed in animal quarters at the University of Nebraska Medical Center, AAALAC approved animal resource facility. The animals were exposed to 12 hour light/dark cycle and allowed access to Purina rat chow and tap water ad libitum.
Rats in groups with PB were injected intraperitoneally with phenobarbital (Mallinckrodt, St. Louis) at 80 ml/kg/day x 2 davs. The PB
injections were given simultaneously with the ODN-microbubble injections.
Phosphorothioate ODN injections were 1 ml/kg/day x 2 days. Sleep times were measured 48 hours after the first injection. The rats were injected intraperitoneally with 100 ml/kg hexobarbital (Sigma, St. Louis), paired fresh daily. The volume of this injection is 1 ml/kg body weight.
Each rat was injected with 100 mg/kg of hexobarbital intraperitoneally.
The animals were placed on their backs to insure that they were still under sedation from the hexobarbital. Sleep time is defined as the time they are placed on their backs to the time when they roll over. The sleep times listed are the mean of each animal in the group standard deviation.
Results indicate that delivery of the oligonucleotide conjugated microbubbles greatly improved efficacy of the drug. Rats given 1/20th dose of oligo experienced a sleep time of more than 50 minutes. This is compared to non microbubble conjugated oligo with an approximate sleep time of 13 minutes Rats were ultimately sacrificed using ethyl ether and microsomes were prepared as described by Franklin and Estabrook (1971). Livers were perfused with 12 ml of 4% saline via the portal vein and then removed from the animal. The livers were minced, homogenized in .25 M sucrose (Sigma) *
and centrifuged at 8000 x g for 20 minutes at 4 C in a Sorvall RC2-B
centrifuge (Dupont, Wilmington, DE). The supernatant was saved and resuspended in a .25 M sucrose and centrifuged at 100,000 x g for 45 minutes at 4 C in a Sorvall OTD55B ultracentrifuge (Dupont). The pellet was resuspended in 1.15% KCL (Sigma) and centrifuged at 100,000 x g for 1 hour at 4 C with the final pellet resuspended in an equal volume buffer (10 mM
Tris-acetate, 1 mM EDTA, 20% glycerol; Sigma) and frozen at -80 C.
* Trademark Protein concentrations were determined by Bradford assay (Bradford, 1976). 80 l aliquots of homogenate were added to a 96 well plate (Becton, Dickinson Labware, Lincoln Park, NJ). 20 l of Bradford reagent (Bio-Rad Richmond, CA) was then added and the plates read at 595 nm on the microplate reader (Molecular Devices, Newport MN). The data was compared to standard curve generated with known concentrations of bovine serum albumin (Sigma).
CYP IIB 1 content was determined by pentoxyresorufin 0-dealkylation (PROD) activity (Burke et al. 1985). For each microsomal sample, 1 mg protein in 1 ml .1 M potassium phosphate buffer, 1 ml 2 M 5-pentoxyresorufin (Pierce, Rockford, IL),:and 17 l 60 mM NADPH were mixed and incubated for 10 minutes at 37 C. The mixture was then added to a 2 ml cuvette and read on a RF5000U spectrofluorophotometer (Shimadzu, Columbia, MD) using an excitation wavelength of 530 nm and emission wavelength of 585 nm. Concentrations of unknowns were calculated from a standard curve of resorufin (Pierce, Rockford, IL) standards. Results were recorded in nmol resorufin/mg protein/min.
Direct measurement of CYP IIB 1 protein was determined by an ELISA
assay using an antibody directed the CYP IIB 1 protein (Schuurs and Van Weeman, 1977). 50 g of liver per well were plated in 100 l .35% sodium bicarbonate buffer overnight on a 96 well nunc-immuno plate (InterMed, Skokie, IL). The microsomes were washed 3x with 1% bovine serum albumin in PBS (PBSBSA) and incubated for 1 hr at 37 C with 200 l PBSBSA. The PBSBSA was removed and 50 l of CYP IIB 1 antibody (Oxygene, Dallas) was added and incubated for 1 hour at 37 C. The microsomes were washed 5x with saline/tween 20 (Sigma) and had 50 }a.l horseradish peroxidase antibody (Bio-rad). added. The microsomes were incubated for 1 hour at 37 C, washed 5x with saline/tween 20 and twice with 85% saline. 100 l of horseradish peroxidase substrate (Kirkegaard & Perry Labs, Gaithersburg, MD) was added and the plate read continuously in a microplate reader (Molecular Devices) at * Trademark 405 nm for 1 hour. Results were recorded as horseradish peroxidase activity in mOD/min.
Results demonstrated that the oligo conjugated microbubbles directed the oligo to the liver and kidney. These are site of phenobarbitol metabolism.
As described earlier, 100 mg/kg HB was injected i.p. to each animal at the end of 2 days of treatment with PB and/or the ODNs. Control rats had a sleep time of about 23 minutes. PB had a significant reduction in sleep time to about 11.4 4.5 minutes. PB stimulates CYP IIB 1 mRNA, as a result, hexobarbital which is hydroxylated by CYP IIB 1 is more quickly metabolized 1 o and its sedative effect reduced.
SEQUENCE LISTING
(1) GENERAL INFORMATION:
(i) APPLICANT: Board of Regents of the University of Nebraska (ii) TITLE OF INVENTION: Compositions and Methods for Altering the Biodistribution of Biological Agents (iii) NUMBER OF SEQUENCES: 6 (iv) CORRESPONDENCE ADDRESS:
(A) ADDRESSEE: Gowling, Strathy & Henderson (B) STREET: 160 Elgin Street, Suite 2600 (C) CITY: Ottawa (D) STATE: Ontario (E) COUNTRY: Canada (F) ZIP: K1P 1C3 (v) COMPUTER READABLE FORM:
(A) MEDIUM TYPE: Floppy disk (B) COMPUTER: IBM PC compatible (C) OPERATING SYSTEM: PC-DOS/MS-DOS
(D) SOFTWARE: PatentIn Release #1.0, Version #1.30 (vi) CURRENT APPLICATION DATA:
(A) APPLICATION NUMBER: 2,258,882 (B) FILING DATE: 20-JUN-1997 (C) CLASSIFICATION:
(viii) ATTORNEY/AGENT INFORMATION:
(A) NAME: Gowling, Strathy & Henderson (B) REGISTRATION NUMBER:
(C) REFERENCE/DOCKET NUMBER: 08-881983CA
(ix) TELECOMMUNICATION INFORMATION:
(A) TELEPHONE: 613-233-1781 (B) TELEFAX: 613-563-9869 (2) INFORMATION FOR SEQ ID NO:1:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 15 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:1:
(2) INFORMATION FOR SEQ ID NO:2:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 24 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:2:
(2) INFORMATION FOR SEQ ID NO:3:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 6 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:3:
(2) INFORMATION FOR SEQ ID NO:4:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 20 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:4:
(2) INFORMATION FOR SEQ ID NO:5:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 22 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear T
(ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:5:
(2) INFORMATION FOR SEQ ID NO:6:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 22 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:6:
infusion), percutaneously or intramuscularly. The microbubble is then processed in the animal and is taken up and interacted with according to the filmogenic protein which coats the microbubble. Ultimately the bubble dissipates delivering the bioactive at the site of processing of the protein.
It has been previously shown by applicants that microbubble conjugation of bioactive agents can be used in targeted delivery protocols with l0 delivery of the biologic upon application of ultrasound to the target site, causing cavitation of the microbubble and ultimate release of the biologic at the site in interaction with the ultrasound field. Quite unexpectedly, applicant has now discovered that application of ultrasound is not necessary for the targeted delivery of biologics to sites of bioprocessing of the protein coating. The protein traffics the microbubble and conjugate to sites of processing and as the bubbles dissipate the oligo or other biologic is released to interact with the site allowing for a fraction of the biologic to achieve the same biological effect.
In a preferred embodiment the agent of the invention is a perfluorocarbon enhanced sonicated dextrose albumin solution comprised of a sonicated three-fold dilution of 5% human serum albumin with 5% dextrose.
During sonication, the solution is perfused with perfluorocarbon gas for about 80 seconds which lowers the solubility and diffusivity of the microbubble gas.
The resulting microbubbles are concentrated at room temperature for at least about 120 5 minutes wherein the excess solution settles in the sonicating syringe. The microbubbles are then exposed to a therapeutic agent and allowed to interact such that the agent becomes conjugated to the microbubbles. Next the conjugated microbubbles are transferred to a sterile syringe and injected parenterally into a mammal, preferably near the target site of activity of the agent.
Methods of ultrasonic imaging in which microbubbles formed by sonicating an aqueous protein solution are injected into a mammal to alter the acoustic properties of a predetermined area which is then ultrasonically scanned to obtain an image for use in medical procedures is well known. For example see U.S. Patent No. 4,572,203, U.S. Patent No. 4,718,433 and U.S.
Patent No. 4,774,958..
It is the use of these types of contrast agents as a pharmaceutical composition as part of a targeted delivery system that is the novel 1 o improvement of this invention.
The invention has been shown to drastically improve the efficiency and therapeutic activity by altering biodistribution of several drugs including, most notably, anti-sense oligonucleotides which have been traditionally plagued with ineffective pharmacologic parameters, including high clearance rate and toxicity.
This is particularly significant as the microbubble-therapeutic agent therapy can reduce any toxic effects of persons who perhaps could not tolerate certain therapeutics at doses and concentrations necessary to achieve a benefi.cial result.
The protein substance such as human serum albumin is easily metabolized within the body and excreted outside and hence is not harmful to the human body. Further gas trapped within the microbubbles is extremely small and is easily dissolved in blood fluid, perfluoropropane and perfluorobutane have long been known to be safe in humans. Both have been used in humans for intra ocular injections to stabilize retinal detachments.
Wong and Thompson, Ophthalmology 95:609-613. Thus the anti thrombosis agents of the invention are extremely safe and nontoxic for patients.
The invention is particularly useful for delivery of nucleotide sequences in the form of gene therapy vectors, or anti-sense of anti-gene type strategies 3 0 to ultimately alter gene expressions in target cells.
WO 98/00 t 72 PCT/US97/10766 Antisense oligonucleotides represent potential tools in research and therapy by virtue of their ability to specifically inhibit synthesis of target proteins. A major theoretical advantage of these oligos is their potential specificity for binding to one site in the cell. According to one embodiment of the invention a synthetic oligonucleotide of at least 6 nucleotides, preferably complementary to DNA (antigene) or RNA (antisense), which interferes with the process of transcription or translation of endogenous proteins is presented.
Any of the known methods for oligonucleotide synthesis can be used to prepare the oligonucleotides. They are most conveniently prepared using any of the commercially available, automated nucleic acid synthesizers, such as applied biosystems, Inc., DNA synthesizer (Mode1380B). According to manufacturers protocols using phosphoroamidite chemistry. After biosystems (Foster City, CA). Phosphorothioate oligonucleotides were synthesized and purified according to the methods described in Stek and Zahn J.
Chromatography, 326:263-280 and in Applied Biosystems, DNA Synthesizer, User Bulletin, Models 380A-380B-381A-391-EP, December 1989. The oligo is introduced to cells by methods which are known to those of skill in the art.
See Iverson, et al., "Anti-Cancer Drug Design", 1991, 6531-6538.
Traditional limitations of oligonucleotide therapy have been preparation of the oligonucleotide analogue which is substantially resistant to the endo and exonucleases found in the blood and cells of the body. While unmodified oligos have been shown to be effective, several modifications to these oligos has helped alleviate this problem.
Modified or related nucleotides of the present invention can include one or more modifications of the nucleic acid bases, sugar moieties, internucleoside phosphate linkages, or combinations of modifications at these sites. The internucleoside phosphate linkages can be phosphorothioate, phosphoramidate; methylphosphonate, phosphorodithioate and combinations 3 0 of such similar linkages (to produce mix backbone modified oligonucleotides).
Modifications may be internal or at the end(s) of the oligonucleotide molecule and can include additions to the molecule of the internucleoside phosphate linkages, such as cholesterol, diamine compounds with varying numbers of carbon residues between the amino groups, and terminal ribose, deoxyriboase and phosphate modifications which cleave, or crosslink to the opposite chains or to associated enzymes or other proteins which bind to the genome.
These modifications traditionally help shield the oligo from enzymatic degradation within the cell. Any of the above modifications can be used with the method of the invention. However, in preferred embodiment the modification is a phosphorothioate oligonucleotide.
The following examples are for illustration purposes only and are not intended to limit this invention in any way. It will be appreciated by those of skill in the art, that numerous other protein-bioactive agent combinations can be used in the invention and are even contemplated herein. For example, if the filmogenic protein is transferrin, the bioactive agent could be any transferrin binding pharmacologic.
In all the following examples, all parts and percentages are by weight unless otherwise mentioned, all dilutions are by volume.
Phosphorothioate oligonucleotide synthesis Chain extension syntheses were performed on a 1 mole column support on an ABI Model 391 DNA synthesizer (Perkin Elmer, Foster City, CA) or provided by Lynx Therapeutics, Inc. (Hayward CA). The 1 micromole synthesis employed cyanoethyl phosphoroamidites and sulfurization with tetraethylthiuram disulfide as per ABI user Bulletin 58.
Radiolabeled oligonucleotides were synthesized as hydrogen phosphonate material by Glen Research (Bethesda, MD). The uniformly 35S-labeled PS-ODN with sequences 5'-TAT GCT GTG CCG GGG TCT TCG GGC
3' (24-mer complementary to c-myb) (SEQ ID NO:2) and 5' TTAGGG 3' (SEQ
ID NO:3) were incubated in a final volume of 0.5 ml with the perfluorocarbon-exposed sonicated dextrose albumin microbubble solution for 30 minutes at 37 C. The solutions were allowed to stand so that the bubbles could rise to the top and 100 microliters were removed from the clear solution at the bottom and 100 microliters were removed from the top containing the microbubbles.
Preparation of Microbubble Agent Five percent human serum albumin and five percent dextrose were obtained from a commercial source. Three parts of 5% dextrose and one part 5% human serum albumin (total 16 milliliters) were drawn into a 35-milliliter Monojet syringe. Each dextrose albumin sample was hand agitated with 8 2 1 o milliliters of either a fluorocarbon gas (decafluorobutane; molecular weight 238 grams/mole) or 8 2 milliliters of room air, and the sample was then exposed to electromechanical sonication at 20 kilohertz for 80 5 seconds. The mean size of four consecutive samples of the perfluorocarbon-exposed sonicated dextrose albumin (PESDA) microbubbles produced in this manner, as measured with hemocytometry was 4.6 0.4 microns, and mean concentration, as measured by a Coulter counter was 1.4x 109 bubbles/milliliter. The solution of microbubbles was then washed in a 1000 times volume excess of 5% dextrose to remove albumin which was not associated with the microbubbles. The microbubbles were allowed four hours to rise. The lower solution was then removed leaving the washed foam. The washed foam was then mixed with 0.9% sodium chloride.
Binding Assavs The radioactive 24-mer PS-ODN was added to a washed solution of PESDA and room air sonicated dextrose albumin (RA-SDA) microbubbles at a concentration of 5nM. Non-radioactive PS-ODN 20-mer was added to tubes containing radioactive 24-mer in a series of increasing concentrations (0, 3.3, 10, 32.7, 94.5, 167, and 626 M). The suspension of bubbles is mixed by inversion and incubated at 37 C for 60 minutes.
Measurement of Radioactivitv 3 0 Radioactivity in solutions were determined by liquid scintillation counting in a liquid scintillation counter (model LSC7500; Beckman * Trademark Instruments GmbH, Munich, Germany). The sample volume was 100 1 to which 5 ml of Hydrocount biodegradable scintillation cocktail was added and mixed. Samples were counted immediately after each experiment and then again 24 hours later in order to reduce the influence of chemiluminescence and of quenching.
Flow cytometry The uniformity of room air versus perfluorocarbon-containing sonicated dextrose albumin microbubble binding of PS-ODN was determined by flow cytometry. A solution of microbubbles was washed in a 1000 fold excess 1o volume of sterile saline. Three groups of samples were prepared in triplicate as follows; Group A (control) in which 100 l of microbubbles were added to a 900 L of saline, Group B in which 100 /1 of microbubbles were added to 900 L of saline and 2 L of FITC-labeled 20-mer was added (fina120-mer concentration is 151 nM), and group C in which 100 L of microbubbles were added to 800 L of saline, 2 L of FITC-labeled 20-mer and 100 L of unlabeled 20-mer(final concentration is 151nM). The incubations were all conducted for minutes at room temperature.
Washed microbubble suspensions were diluted in sterile saline (Baxter) and then incubated with FITC-labeled PS-ODN. Flow cytometric analysis was 20 performed using a FACStar Plus (Becton Dickinson) equipped with t 100 mW
air-cooled argon laser and the Lysis II acquisition and analysis software.
List mode data were employed for a minimum of 104 collected microbubbles and independent analysis a for each sample.
Study Protocol A variable flow microsphere scanning chamber was developed for the study which is similar to that we have described previously Mor-Avi V., et al "Stability of Albunex microspheres under ultrasonic irradiation; and in vitro study. J Am Soc Echocardiology 7:S29, 1994. This system consists of a circular scanning chamber connected to a Masterflex flow system(Microgon, Inc., 3 0 Laguna Hills California) The scanning chamber was enclosed on each side by water-filled chambers and bound on each side by acoustically transparent * Trademark 15 material. The PS-ODN-labeled PESDA microbubbles (0.1 milliliters) were injected as a bolus over one second proximal to the scanning chamber which then flowed through plastic tubing into a tap water-filled scanning chamber at a controlled flow rate of 100 ml/min. As the bubbles passed through the scanning chamber, the scanner(2.0 Megahertz) frequency, 1.2 Megapascals peak negative pressure) was set to either deliver ultrasound at a conventional 30 Hertz frame rate or was shut off. Following passage through the scanning chamber, the solution was then passed through the same size plastic tubing into a graduated cylinder. The first 10 inilliliters was discarded. Following 1 o this, the next 10 milliliters was allowed to enter into a collection tube.
The collection tube containing the effluent microbubbles was allowed to stand in order to separate microbubbles on the top from whatever free oligonucleotide existed in the lower portion of the sample. Drops from both the upper and lower operation of the effluent were then placed upon a hemocytometer slide and analyzed using a lOX magnification. Photographs of these slides were then made and the number of microbubbles over a 36 square centimeter field were then hand-counted. The upper and lower layers of the remaining effluent were then used for analysis of oligonucleotide content using flow cytometry in the same manner described below.
Microbubble samples exposed to the various oligonucleotide solution were mixed 15(v/v) with a solution of formamide and EDTA and heated to 950 C for 5 minutes. These samples were then examined on an Applied Biosystems Model 373A DNA sequencer with e 20% polyacrylamide gel. The data were acquired with GeneScanner software so that fluorescence intensity area under the curve could be determined.
PhosAhorothioate Oligonucleotide Binding of PESDA versus RA-SDA
Microbubbles The partitioning of PS-ODN to PESDA microbubbles top layer) and non-3 o bubble washed (albumin-free) and unwashed (non-bubble albumin containing) lower layers as counted by liquid scintillation counting are demonstrated in Table 1.
__~_. T
TABLE I OLIGONUCLEOTIDES BINDING TO ALBUMIN OF PESDA
MICROBUBBLES
BUBBLES IN THE PRESENCE OF FREE ALBUMIN
N TOP BOTTOM RATIO
cpm/ 1 cpm/ l TB
TTAGGG 6 125 6.4 92 . 3 6 . 4 1.35 c-myb 6 94.1 17.6 77.3 1.2 1.35 WASHED BUBBLES (NO FREE ALBUMIN) N TOP BOTTOM RATIO
cpm/ l cpm/ l TB
TTAGGG 6 210 10.8 126 8.7 1.67 c-myb 6 200.3 37.4 92.7 15.7 2.16 These data indicate that albumin in the unwashed solution which is not associated with the microbubble will bind to the PS-ODN so that the partitioning of PS-ODN is equivalent between microbubbles(top layer) and the surrounding solution (lower layer; p=HS). Removal of non-microbubble associated albumin (Washed Bubbles in Table 1) does not show a significant partitioning of the PS-ODNs with the PESDA microbubbles (1.67 for TTAGGG
PS-ODN and 2.16 for c-myb PS-ODN). The recovery of total radioactivity in the experiments reported in Table 1 is 96% of the radioactivity added which is not significantly different from 100%.
The affinity of binding of PS-ODN to washed microbubbles was evaluated by addition of increasing amounts of excess non-radioactive PS=ODN as a competing hgand for binding sites. In this case a 20mer PS-ODN with sequence 5'-d(CCC TGC TCC CCC CTG GCT CC)-3' (SEQ ID NO:4) was employed to displace the radioactive 24mer. Albumin protein concentrations in the washed microbubble experiments was 0.28 0.04 mg/ml as determined by the Bradford Assay Bradford M et al "A Rapid and Sensitive Method for the quantification of microgram quantities of protein utilizing the principle of protein-dye binding" anal. Bioche,. 72:248, 1976. The observed binding data are presented as a Lineweaver Burke plot in Figure 1. The equilibrium dissociation constant Km (calculated for the 7 concentrations which were run in duplicate) for the binding to the microbubbles was 1.76 X
10-5 M.
The distribution of FITC-labeled microbubbles is provided in table 2 TABLE 2 DISTRIBUTION OF OLIGONUCLEOTIDE (PS-ODN) BOUND MICROBUBBLES
Control PS-ODN 151nM FITC PS-ODN Excess Unlabeled ODN
No. PE MI PE MI PE MI
1 99.5 2.38 98.9 2109.8 97.8 1753.1 2 99.3 4.07 99.1 2142.3 98.7 1710.9 3 99.4 3.52 99.1 2258.5 99.3 1832.2 mean 3.23 2170 1765 SE 0.50 461 361,2 PE=percent events MI=mean intensity SE=standard error lindicates this mean is significantly different form control, P<0.001 2indicates this mean is significantly different form 151nM, P<0.001 The significant decrease in mean fluorescence intensity in the samples containing excess unlabeled PS-ODN indicates the binding to microbubbles is saturable. Consequently, since the binding is saturable, the nonspecific interactions of PS-ODN with the microbubble surface are limited. A Gaussian distribution of PS-ODN to washed PESDA microbubbles indicated that the albumin on these microbubbles had retained its binding site for the oligonucleotide. The absence of a Gaussian distribution for washed RA-SDA
indicated loss of albumin binding site 1 for this oligonucleotide occurred during sonication of these microbubbles. For a discussion of albumin binding characteristics particularly as they relate to oligonucleotides see Kumar, Shashi et al "Characterization of Binding Sites, Extent of Binding, and Drug Interactions of Oligonucleotides with Albumin" Antisense Research and Development 5: 131-139 (1995), From the foregoing it can be seen that, PS-ODN binds to the albumin in PESDA microbubbles, indicating that the binding site 1 on albumin is biologically active following production of these bubbles by electromechanical sonication.
This binding site affinity is lost when the electromechanical sonication is performed only with room sir. Further, removal of albumin not associated with PESDA
microbubbles by washing shows a significant partitioning of the PS-ODNs with the microbubbles(Table 1). These observations demonstrate that albumin denaturation 1 o does not occur with perfluorocarbon-containing dextrose albumin solutions during sonication as has been suggested with sqnication in the presence of air. The retained bioactivity of albumin(especially at site 1) in PESDA microbubbles was confirmed by the affinity of binding of PS-ODN to washed PESDA microbubbles in the presence of increasing amounts of excess non-radioactive PS-ODN as a competing ligand for binding sites (Table 2). The significant decrease in mean fluorescence intensity in the samples containing excess unlabeled PS=-ODN
indicates the binding to microbubbles is saturable.
ALTERED BIODISTRIBUTION VIA MICROBUBBLE DELIVERY OF
2 o ANTISENSE OLIGOS
According to the invention antisense phosphorothioate oligonucleotides were designed to the cytochrome P450 IIB 1 gene sequence to alter the metabolism of Phenobarbital. The oligonucleotides were conjugated to perfluoropropane exposed sonicated dextrose albumin microbubbles (PESDA) as earlier described and delivered to rats intravenously. The oligonucleotide was synthesized according to the rat cytochrome P450 IIB 1 known sequence and had the following sequence:
GGAGCAAGATACTGGGCTCCAT (SEQ ID NO:5) AAAGAAGAGAGAGAGCAGGGAG (SEQ ID NO:6) Male Sprague-Dawley rats (Sasco, Omaha), were used and weighed between 210 to 290 grams for all studies. They were housed in animal quarters at the University of Nebraska Medical Center, AAALAC approved animal resource facility. The animals were exposed to 12 hour light/dark cycle and allowed access to Purina rat chow and tap water ad libitum.
Rats in groups with PB were injected intraperitoneally with phenobarbital (Mallinckrodt, St. Louis) at 80 ml/kg/day x 2 davs. The PB
injections were given simultaneously with the ODN-microbubble injections.
Phosphorothioate ODN injections were 1 ml/kg/day x 2 days. Sleep times were measured 48 hours after the first injection. The rats were injected intraperitoneally with 100 ml/kg hexobarbital (Sigma, St. Louis), paired fresh daily. The volume of this injection is 1 ml/kg body weight.
Each rat was injected with 100 mg/kg of hexobarbital intraperitoneally.
The animals were placed on their backs to insure that they were still under sedation from the hexobarbital. Sleep time is defined as the time they are placed on their backs to the time when they roll over. The sleep times listed are the mean of each animal in the group standard deviation.
Results indicate that delivery of the oligonucleotide conjugated microbubbles greatly improved efficacy of the drug. Rats given 1/20th dose of oligo experienced a sleep time of more than 50 minutes. This is compared to non microbubble conjugated oligo with an approximate sleep time of 13 minutes Rats were ultimately sacrificed using ethyl ether and microsomes were prepared as described by Franklin and Estabrook (1971). Livers were perfused with 12 ml of 4% saline via the portal vein and then removed from the animal. The livers were minced, homogenized in .25 M sucrose (Sigma) *
and centrifuged at 8000 x g for 20 minutes at 4 C in a Sorvall RC2-B
centrifuge (Dupont, Wilmington, DE). The supernatant was saved and resuspended in a .25 M sucrose and centrifuged at 100,000 x g for 45 minutes at 4 C in a Sorvall OTD55B ultracentrifuge (Dupont). The pellet was resuspended in 1.15% KCL (Sigma) and centrifuged at 100,000 x g for 1 hour at 4 C with the final pellet resuspended in an equal volume buffer (10 mM
Tris-acetate, 1 mM EDTA, 20% glycerol; Sigma) and frozen at -80 C.
* Trademark Protein concentrations were determined by Bradford assay (Bradford, 1976). 80 l aliquots of homogenate were added to a 96 well plate (Becton, Dickinson Labware, Lincoln Park, NJ). 20 l of Bradford reagent (Bio-Rad Richmond, CA) was then added and the plates read at 595 nm on the microplate reader (Molecular Devices, Newport MN). The data was compared to standard curve generated with known concentrations of bovine serum albumin (Sigma).
CYP IIB 1 content was determined by pentoxyresorufin 0-dealkylation (PROD) activity (Burke et al. 1985). For each microsomal sample, 1 mg protein in 1 ml .1 M potassium phosphate buffer, 1 ml 2 M 5-pentoxyresorufin (Pierce, Rockford, IL),:and 17 l 60 mM NADPH were mixed and incubated for 10 minutes at 37 C. The mixture was then added to a 2 ml cuvette and read on a RF5000U spectrofluorophotometer (Shimadzu, Columbia, MD) using an excitation wavelength of 530 nm and emission wavelength of 585 nm. Concentrations of unknowns were calculated from a standard curve of resorufin (Pierce, Rockford, IL) standards. Results were recorded in nmol resorufin/mg protein/min.
Direct measurement of CYP IIB 1 protein was determined by an ELISA
assay using an antibody directed the CYP IIB 1 protein (Schuurs and Van Weeman, 1977). 50 g of liver per well were plated in 100 l .35% sodium bicarbonate buffer overnight on a 96 well nunc-immuno plate (InterMed, Skokie, IL). The microsomes were washed 3x with 1% bovine serum albumin in PBS (PBSBSA) and incubated for 1 hr at 37 C with 200 l PBSBSA. The PBSBSA was removed and 50 l of CYP IIB 1 antibody (Oxygene, Dallas) was added and incubated for 1 hour at 37 C. The microsomes were washed 5x with saline/tween 20 (Sigma) and had 50 }a.l horseradish peroxidase antibody (Bio-rad). added. The microsomes were incubated for 1 hour at 37 C, washed 5x with saline/tween 20 and twice with 85% saline. 100 l of horseradish peroxidase substrate (Kirkegaard & Perry Labs, Gaithersburg, MD) was added and the plate read continuously in a microplate reader (Molecular Devices) at * Trademark 405 nm for 1 hour. Results were recorded as horseradish peroxidase activity in mOD/min.
Results demonstrated that the oligo conjugated microbubbles directed the oligo to the liver and kidney. These are site of phenobarbitol metabolism.
As described earlier, 100 mg/kg HB was injected i.p. to each animal at the end of 2 days of treatment with PB and/or the ODNs. Control rats had a sleep time of about 23 minutes. PB had a significant reduction in sleep time to about 11.4 4.5 minutes. PB stimulates CYP IIB 1 mRNA, as a result, hexobarbital which is hydroxylated by CYP IIB 1 is more quickly metabolized 1 o and its sedative effect reduced.
SEQUENCE LISTING
(1) GENERAL INFORMATION:
(i) APPLICANT: Board of Regents of the University of Nebraska (ii) TITLE OF INVENTION: Compositions and Methods for Altering the Biodistribution of Biological Agents (iii) NUMBER OF SEQUENCES: 6 (iv) CORRESPONDENCE ADDRESS:
(A) ADDRESSEE: Gowling, Strathy & Henderson (B) STREET: 160 Elgin Street, Suite 2600 (C) CITY: Ottawa (D) STATE: Ontario (E) COUNTRY: Canada (F) ZIP: K1P 1C3 (v) COMPUTER READABLE FORM:
(A) MEDIUM TYPE: Floppy disk (B) COMPUTER: IBM PC compatible (C) OPERATING SYSTEM: PC-DOS/MS-DOS
(D) SOFTWARE: PatentIn Release #1.0, Version #1.30 (vi) CURRENT APPLICATION DATA:
(A) APPLICATION NUMBER: 2,258,882 (B) FILING DATE: 20-JUN-1997 (C) CLASSIFICATION:
(viii) ATTORNEY/AGENT INFORMATION:
(A) NAME: Gowling, Strathy & Henderson (B) REGISTRATION NUMBER:
(C) REFERENCE/DOCKET NUMBER: 08-881983CA
(ix) TELECOMMUNICATION INFORMATION:
(A) TELEPHONE: 613-233-1781 (B) TELEFAX: 613-563-9869 (2) INFORMATION FOR SEQ ID NO:1:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 15 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:1:
(2) INFORMATION FOR SEQ ID NO:2:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 24 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:2:
(2) INFORMATION FOR SEQ ID NO:3:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 6 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:3:
(2) INFORMATION FOR SEQ ID NO:4:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 20 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:4:
(2) INFORMATION FOR SEQ ID NO:5:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 22 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear T
(ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:5:
(2) INFORMATION FOR SEQ ID NO:6:
(i) SEQUENCE CHARACTERISTICS:
(A) LENGTH: 22 base pairs (B) TYPE: nucleic acid (C) STRANDEDNESS: single (D) TOPOLOGY: linear (ii) MOLECULE TYPE: cDNA
(iii) HYPOTHETICAL: NO
(iv) ANTI-SENSE: YES
(xi) SEQUENCE DESCRIPTION: SEQ ID NO:6:
Claims (28)
1. A use of a suspension of filmogenic protein encapsulated, insoluble gas-filled microbubbles in an aqueous solution of a saccharide and said protein, for delivering to a target tissue site a biological agent which conjugates with said filmogenic protein, wherein said insoluble gas is a perfluorocarbon gas or SF6, and wherein said biological agent is conjugated to said filmogenic protein.
2. A use of a suspension of filmogenic protein encapsulated, insoluble gas-filled microbubbles in an aqueous solution of a saccharide and said protein, wherein said insoluble gas is a perfluorocarbon gas or SF6, and wherein a biological agent is conjugated to the filmogenic protein, for the preparation of a medicament for delivering to a target site the biological agent which conjugates with the filmogenic protein.
3. The use of claim 1 or 2 wherein said filmogenic protein is selected from the group consisting of albumin, human gamma globulin, human apotransferrin and urease.
4. The use of claim 1 or 2 wherein said insoluble gas is selected from the group consisting of perfluoromethane, perfluoroethane, perfluoropropane, perfluorobutane, and perfluoropentane.
5. The use of claim 4 wherein said gas is perfluoropropane.
6. The use of claim 4 wherein said insoluble gas is perfluorobutane.
7. The use of claim 1 or 2 wherein said saccharide is a water soluble monosaccharide selected from dextrose, fructose, and mixtures thereof; a water soluble disaccharide selected from sucrose, lactose, maltose, and mixtures thereof; or a water soluble dextran.
8. The use of claim 1 or 2 wherein said microbubbles are formed by the steps of:
mixing an aqueous solution comprising about 2% to about 10% by weight of human serum albumin diluted about two-fold to about eight-fold with 5% to 50%
by weight of dextrose;
exposing said solution to a sonication horn while perfusing with the insoluble gas, to create cavitation at particulate sites in said solution, thereby generating stable microbubbles from about 0.1 to 10 microns in diameter; and incubating the microbubbles with the biologically active agent.
mixing an aqueous solution comprising about 2% to about 10% by weight of human serum albumin diluted about two-fold to about eight-fold with 5% to 50%
by weight of dextrose;
exposing said solution to a sonication horn while perfusing with the insoluble gas, to create cavitation at particulate sites in said solution, thereby generating stable microbubbles from about 0.1 to 10 microns in diameter; and incubating the microbubbles with the biologically active agent.
9. The use of claim 8, wherein said dilution of albumin with dextrose is a threefold dilution.
10. The use of claim 8, wherein said human serum albumin is a 5% by weight solution.
11. The use of claim 8, wherein said dextrose is a 5% by weight solution.
12. The use of claim 1 or 2 wherein said biological agent is selected from the group consisting of an oligonucleotide, a polynucleotide, a ribozyme, naproxen, piroxicam, warfarin, furosemide, phenylbutazone, valproic acid, sulfisoxazole, ceftriaxone, and miconazole.
13. The use of claim 12, wherein said biological agent is an oligonucleotide.
14. The use of claim 13, wherein said oligonucleotide is a phosphorothioate oligonucleotide.
15. A composition for delivery of a biological agent to a target site, comprising: an aqueous suspension of filmogenic protein encapsulated, insoluble gas-filled microbubbles, and the biological agent conjugated to said filmogenic protein.
16. The composition of claim 15 wherein said protein is selected from the group consisting of albumin, human gamma globulin, human apotransferrin, and urease.
17. The composition of claim 16 wherein said protein is albumin.
18. The composition of claim 17 wherein said gas is a perfluorocarbon gas.
19. The composition of claim 18 wherein said gas is selected from the group consisting of perfluoromethane, perfluoroethane, perfluoropropane, perfluorobutane, and perfluoropentane.
20. The composition of claim 19 wherein said gas is perfluorobutane.
21. The composition of claim 19 wherein said gas is perfluoropropane.
22. The composition of claim 21 wherein said biological agent is selected from the group consisting of an oligonucleotide, a polynucleotide, a ribozyme, naproxen, piroxicam, warfarin, furosemide, phenylbutazone, valproic acid, sulfisoxazole, ceftriaxone, and miconazole.
23. The composition of claim 22 wherein said biological agent is an oligonucleotide.
24. The composition of claim 15, wherein said protein is albumin and said biological agent is a nucleic acid selected from the group consisting of an antisense oligonucleotide, an antigene oligonucleotide, an oligonucleotide probe, a nucleotide vector, a viral vector, and a plasmid.
25. The composition of claim 24 wherein said microbubbles are 0.1 to 10 microns in diameter.
26. The use of claim 1 or 2, wherein said protein is albumin and said biological agent is a nucleic acid biological agent.
27. A use of a suspension of microbubbles encapsulated by a filmogenic protein and filled with insoluble gas, having a blood solubility lower than that of nitrogen or oxygen for delivering a biologically active agent to a specific tissue site, wherein said biological agent is conjugated to said protein, and wherein said biological agent is released at said specific tissue site once the suspension has reached said specific tissue site.
28. A use of a suspension of microbubbles encapsulated by a filmogenic protein and filled with insoluble gas, having a blood solubility lower than that of nitrogen or oxygen for the preparation of a medicament for delivering a biologically active agent to a specific tissue site, wherein said biological agent is conjugated to said protein, and wherein said biological agent is released at said specific tissue site once the suspension has reached said specific tissue site.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/670,999 | 1996-06-28 | ||
US08/670,999 US5849727A (en) | 1996-06-28 | 1996-06-28 | Compositions and methods for altering the biodistribution of biological agents |
PCT/US1997/010766 WO1998000172A2 (en) | 1996-06-28 | 1997-06-20 | Compositions and methods for altering the biodistribution of biological agents |
Publications (2)
Publication Number | Publication Date |
---|---|
CA2258882A1 CA2258882A1 (en) | 1998-01-08 |
CA2258882C true CA2258882C (en) | 2009-03-17 |
Family
ID=24692746
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CA002258882A Expired - Lifetime CA2258882C (en) | 1996-06-28 | 1997-06-20 | Compositions and methods for altering the biodistribution of biological agents |
Country Status (7)
Country | Link |
---|---|
US (5) | US5849727A (en) |
EP (1) | EP0938341B1 (en) |
JP (2) | JP4201348B2 (en) |
AT (1) | ATE260677T1 (en) |
CA (1) | CA2258882C (en) |
DE (1) | DE69727958T2 (en) |
WO (1) | WO1998000172A2 (en) |
Families Citing this family (115)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6088613A (en) | 1989-12-22 | 2000-07-11 | Imarx Pharmaceutical Corp. | Method of magnetic resonance focused surgical and therapeutic ultrasound |
US5585112A (en) | 1989-12-22 | 1996-12-17 | Imarx Pharmaceutical Corp. | Method of preparing gas and gaseous precursor-filled microspheres |
US5205290A (en) | 1991-04-05 | 1993-04-27 | Unger Evan C | Low density microspheres and their use as contrast agents for computed tomography |
US6743779B1 (en) | 1994-11-29 | 2004-06-01 | Imarx Pharmaceutical Corp. | Methods for delivering compounds into a cell |
US6176842B1 (en) * | 1995-03-08 | 2001-01-23 | Ekos Corporation | Ultrasound assembly for use with light activated drugs |
US6521211B1 (en) | 1995-06-07 | 2003-02-18 | Bristol-Myers Squibb Medical Imaging, Inc. | Methods of imaging and treatment with targeted compositions |
US5648098A (en) * | 1995-10-17 | 1997-07-15 | The Board Of Regents Of The University Of Nebraska | Thrombolytic agents and methods of treatment for thrombosis |
US6245747B1 (en) | 1996-03-12 | 2001-06-12 | The Board Of Regents Of The University Of Nebraska | Targeted site specific antisense oligodeoxynucleotide delivery method |
AU736301B2 (en) | 1996-05-01 | 2001-07-26 | Imarx Therapeutics, Inc. | Methods for delivering compounds into a cell |
US5849727A (en) * | 1996-06-28 | 1998-12-15 | Board Of Regents Of The University Of Nebraska | Compositions and methods for altering the biodistribution of biological agents |
US6261537B1 (en) | 1996-10-28 | 2001-07-17 | Nycomed Imaging As | Diagnostic/therapeutic agents having microbubbles coupled to one or more vectors |
US6264917B1 (en) | 1996-10-28 | 2001-07-24 | Nycomed Imaging As | Targeted ultrasound contrast agents |
US20070036722A1 (en) * | 1996-10-28 | 2007-02-15 | Pal Rongved | Separation processes |
WO1998018498A2 (en) * | 1996-10-28 | 1998-05-07 | Marsden, John, Christopher | Improvements in or relating to diagnostic/therapeutic agents |
WO1998018501A2 (en) * | 1996-10-28 | 1998-05-07 | Marsden, John, Christopher | Improvements in or relating to diagnostic/therapeutic agents |
US6331289B1 (en) | 1996-10-28 | 2001-12-18 | Nycomed Imaging As | Targeted diagnostic/therapeutic agents having more than one different vectors |
CN1238700A (en) * | 1996-10-28 | 1999-12-15 | 奈科姆成像有限公司 | Improvents in or relating to diagnostic/therapeutic agents |
WO1998018495A2 (en) * | 1996-10-28 | 1998-05-07 | Marsden, John, Christopher | Improvements in or relating to diagnostic/therapeutic agents |
US6090800A (en) | 1997-05-06 | 2000-07-18 | Imarx Pharmaceutical Corp. | Lipid soluble steroid prodrugs |
US6120751A (en) | 1997-03-21 | 2000-09-19 | Imarx Pharmaceutical Corp. | Charged lipids and uses for the same |
US6676626B1 (en) | 1998-05-01 | 2004-01-13 | Ekos Corporation | Ultrasound assembly with increased efficacy |
US6582392B1 (en) | 1998-05-01 | 2003-06-24 | Ekos Corporation | Ultrasound assembly for use with a catheter |
US6416740B1 (en) | 1997-05-13 | 2002-07-09 | Bristol-Myers Squibb Medical Imaging, Inc. | Acoustically active drug delivery systems |
US6548047B1 (en) | 1997-09-15 | 2003-04-15 | Bristol-Myers Squibb Medical Imaging, Inc. | Thermal preactivation of gaseous precursor filled compositions |
US20010003580A1 (en) | 1998-01-14 | 2001-06-14 | Poh K. Hui | Preparation of a lipid blend and a phospholipid suspension containing the lipid blend |
US20030078227A1 (en) * | 1998-07-02 | 2003-04-24 | Greenleaf James F. | Site-directed transfection with ultrasound and cavitation nuclei |
CA2337361C (en) * | 1998-07-13 | 2010-11-16 | The Board Of Regents Of The University Of Nebraska | Targeted site specific drug delivery compositions and method of use |
KR100649035B1 (en) * | 1998-07-13 | 2006-11-24 | 더 보드 오브 리젠츠 오브 더 유니버시티 오브 네브라스카 | Targeted site specific drug delivery compositions and method of use |
US6309355B1 (en) * | 1998-12-22 | 2001-10-30 | The Regents Of The University Of Michigan | Method and assembly for performing ultrasound surgery using cavitation |
US8106098B2 (en) | 1999-08-09 | 2012-01-31 | The General Hospital Corporation | Protein conjugates with a water-soluble biocompatible, biodegradable polymer |
US6822086B1 (en) | 1999-08-09 | 2004-11-23 | The General Hospital Corporation | Drug-carrier complexes and methods of use thereof |
EP1303596B1 (en) * | 2000-05-17 | 2010-09-15 | The Board of Regents of the University of Nebraska | Morpholino antisense oligomers as enzyme inhibitors for improving pharmacokinetics of a drug |
JP2002145784A (en) * | 2000-11-10 | 2002-05-22 | Ryuichi Morishita | Biologically active medicament-introducing composition and method for using the same |
DE10119522A1 (en) * | 2001-04-20 | 2002-12-05 | Innovacell Biotechnologie Gmbh | Preparation and application of a suspension composition with an ultrasound contrast medium |
JP4426288B2 (en) * | 2001-07-10 | 2010-03-03 | ソノジーン,リミテッド ライアビリティー カンパニー | Enhanced transfection of liver DNA |
US7897382B2 (en) * | 2001-10-22 | 2011-03-01 | Alnylam Pharmaceuticals, Inc. | Transfection kinetics and structural promoters |
CA2464464A1 (en) * | 2001-10-22 | 2003-05-01 | Nucleonics Inc. | Transfection kinetics and structural promoters |
ATE520362T1 (en) | 2001-12-03 | 2011-09-15 | Ekos Corp | CATHETER WITH MULTIPLE ULTRASONIC EMITTING PARTS |
EP1488813A4 (en) * | 2002-03-22 | 2005-04-06 | Anges Mg Inc | Compositions for delivering biologically active drug and method of using the same |
US8226629B1 (en) | 2002-04-01 | 2012-07-24 | Ekos Corporation | Ultrasonic catheter power control |
US20040180438A1 (en) | 2002-04-26 | 2004-09-16 | Pachuk Catherine J. | Methods and compositions for silencing genes without inducing toxicity |
US7754238B2 (en) * | 2002-05-03 | 2010-07-13 | Avi Biopharma, Inc. | Delivery of microparticle-conjugated drugs for inhibition of stenosis |
US20040126400A1 (en) * | 2002-05-03 | 2004-07-01 | Iversen Patrick L. | Delivery of therapeutic compounds via microparticles or microbubbles |
US20030207907A1 (en) * | 2002-05-03 | 2003-11-06 | Iversen Patrick L. | Delivery of microparticle-conjugated drugs for inhibition of stenosis |
AU2003266014B2 (en) * | 2002-05-06 | 2009-05-14 | Alnylam Pharmaceuticals, Inc. | Methods for delivery of nucleic acids |
EP1540004A4 (en) * | 2002-07-31 | 2007-10-03 | Nucleonics Inc | Double stranded rna structures and constructs, and methods for generating and using the same |
US6921371B2 (en) | 2002-10-14 | 2005-07-26 | Ekos Corporation | Ultrasound radiating members for catheter |
WO2004097017A2 (en) * | 2003-04-29 | 2004-11-11 | Avi Biopharma, Inc. | Compositions for enhancing transport and antisense efficacy of nucleic acid analog into cells |
US20050222068A1 (en) * | 2003-10-23 | 2005-10-06 | Mourich Dan V | Method and antisense composition for selective inhibition of HIV infection in hematopoietic cells |
US7025726B2 (en) * | 2004-01-22 | 2006-04-11 | The Regents Of The University Of Nebraska | Detection of endothelial dysfunction by ultrasonic imaging |
US20050288246A1 (en) | 2004-05-24 | 2005-12-29 | Iversen Patrick L | Peptide conjugated, inosine-substituted antisense oligomer compound and method |
DE102004057196A1 (en) * | 2004-11-26 | 2006-06-01 | Rösner Research GmbH & Co.KG | Method for producing albumin conjugates with non-steroidal anti-inflammatory drugs (NSAIDs) |
US20060240032A1 (en) * | 2005-03-31 | 2006-10-26 | Hinrichs David J | Immunomodulating compositions and methods for use in the treatment of human autoimmune diseases |
WO2006129080A1 (en) * | 2005-05-31 | 2006-12-07 | The Institute Of Cancer Research: Royal Cancer Hospital | Materials and methods for transducing cells with a viral vector |
US8067571B2 (en) | 2005-07-13 | 2011-11-29 | Avi Biopharma, Inc. | Antibacterial antisense oligonucleotide and method |
US10219815B2 (en) | 2005-09-22 | 2019-03-05 | The Regents Of The University Of Michigan | Histotripsy for thrombolysis |
US8057408B2 (en) | 2005-09-22 | 2011-11-15 | The Regents Of The University Of Michigan | Pulsed cavitational ultrasound therapy |
AU2006320488A1 (en) * | 2005-12-02 | 2007-06-07 | Barnes-Jewish Hospital | Methods to ameliorate and image angioplasty-induced vascular injury |
US8012118B2 (en) | 2006-03-08 | 2011-09-06 | Fresenius Medical Care Holdings, Inc. | Artificial kidney dialysis system |
US8715221B2 (en) | 2006-03-08 | 2014-05-06 | Fresenius Medical Care Holdings, Inc. | Wearable kidney |
AU2007288199B2 (en) | 2006-08-24 | 2010-08-26 | Fresenius Medical Care Holdings, Inc. | Device for removing fluid from blood in a patient |
US10182833B2 (en) | 2007-01-08 | 2019-01-22 | Ekos Corporation | Power parameters for ultrasonic catheter |
EP2494932B1 (en) | 2007-06-22 | 2020-05-20 | Ekos Corporation | Apparatus for treatment of intracranial hemorrhages |
US20100016215A1 (en) | 2007-06-29 | 2010-01-21 | Avi Biopharma, Inc. | Compound and method for treating myotonic dystrophy |
CA2691673A1 (en) * | 2007-06-29 | 2009-01-08 | Avi Biopharma, Inc. | Tissue specific peptide conjugates and methods |
WO2009043031A2 (en) | 2007-09-27 | 2009-04-02 | Children's Medical Center Corporation | Microbubbles and methods for oxygen delivery |
WO2009117688A2 (en) * | 2008-03-21 | 2009-09-24 | The Board Of Trustees Of The University Of Arkansas | Methods for producing microbubbles |
US8777892B2 (en) | 2008-11-03 | 2014-07-15 | Fresenius Medical Care Holdings, Inc. | Portable peritoneal dialysis system |
EP2376633A1 (en) * | 2008-12-17 | 2011-10-19 | AVI BioPharma, Inc. | Antisense compositions and methods for modulating contact hypersensitivity or contact dermatitis |
US20110269665A1 (en) | 2009-06-26 | 2011-11-03 | Avi Biopharma, Inc. | Compound and method for treating myotonic dystrophy |
AU2010284313B2 (en) | 2009-08-17 | 2016-01-28 | Histosonics, Inc. | Disposable acoustic coupling medium container |
EP2470267B1 (en) | 2009-08-26 | 2015-11-11 | The Regents Of The University Of Michigan | Micromanipulator control arm for therapeutic and imaging ultrasound transducers |
CA2770706C (en) | 2009-08-26 | 2017-06-20 | Charles A. Cain | Devices and methods for using controlled bubble cloud cavitation in fractionating urinary stones |
US10058837B2 (en) | 2009-08-28 | 2018-08-28 | The Trustees Of Columbia University In The City Of New York | Systems, methods, and devices for production of gas-filled microbubbles |
US8539813B2 (en) | 2009-09-22 | 2013-09-24 | The Regents Of The University Of Michigan | Gel phantoms for testing cavitational ultrasound (histotripsy) transducers |
WO2011084694A1 (en) | 2009-12-17 | 2011-07-14 | University Of Pittsburgh-Of The Commonwealth System Of Higher Education | Stabilized stat3 decoy oligonucleotides and uses therefor |
WO2012065060A2 (en) * | 2010-11-12 | 2012-05-18 | Children's Medical Center Corporation | Gas-filled microbubbles and systems for gas delivery |
US9161948B2 (en) | 2011-05-05 | 2015-10-20 | Sarepta Therapeutics, Inc. | Peptide oligonucleotide conjugates |
KR20120140290A (en) * | 2011-06-21 | 2012-12-31 | 주식회사 퍼시픽시스템 | Method of manufacturing bubble for accelerating functional material and device or transferring functional material |
US9144694B2 (en) | 2011-08-10 | 2015-09-29 | The Regents Of The University Of Michigan | Lesion generation through bone using histotripsy therapy without aberration correction |
US10357450B2 (en) | 2012-04-06 | 2019-07-23 | Children's Medical Center Corporation | Process for forming microbubbles with high oxygen content and uses thereof |
US9049783B2 (en) | 2012-04-13 | 2015-06-02 | Histosonics, Inc. | Systems and methods for obtaining large creepage isolation on printed circuit boards |
EP2844343B1 (en) | 2012-04-30 | 2018-11-21 | The Regents Of The University Of Michigan | Ultrasound transducer manufacturing using rapid-prototyping method |
EP2903688A4 (en) | 2012-10-05 | 2016-06-15 | Univ Michigan | Bubble-induced color doppler feedback during histotripsy |
WO2014117232A1 (en) * | 2013-02-04 | 2014-08-07 | Farret Neto Abdo | Medicinal preparation in the form of a foam for the sustained release of medicinal drugs, and system for producing the medicinal preparation |
US9101745B2 (en) | 2013-03-14 | 2015-08-11 | Sonogene Llc | Sonochemical induction of ABCA1 expression and compositions therefor |
AU2014232195A1 (en) * | 2013-03-15 | 2015-10-15 | Doheny Eye Institute | Management of tractional membranes |
WO2014144364A1 (en) | 2013-03-15 | 2014-09-18 | Children's Medical Center Corporation | Gas-filled stabilized particles and methods of use |
US10124126B2 (en) * | 2013-04-18 | 2018-11-13 | The Regents Of The University Of Colorado, A Body Corporate | System and methods for ventilation through a body cavity |
WO2015003154A1 (en) | 2013-07-03 | 2015-01-08 | Histosonics, Inc. | Articulating arm limiter for cavitational ultrasound therapy system |
JP6600304B2 (en) | 2013-07-03 | 2019-10-30 | ヒストソニックス,インコーポレーテッド | Optimized histotripsy excitation sequence for bubble cloud formation using shock scattering |
US10780298B2 (en) | 2013-08-22 | 2020-09-22 | The Regents Of The University Of Michigan | Histotripsy using very short monopolar ultrasound pulses |
US11305013B2 (en) * | 2014-08-26 | 2022-04-19 | Drexel University | Surfactant microbubbles and process for preparing and methods of using the same |
US10052394B2 (en) | 2014-11-21 | 2018-08-21 | General Electric Company | Microbubble tether for diagnostic and therapeutic applications |
US11000476B2 (en) | 2015-05-28 | 2021-05-11 | Pacific System Co., Ltd. | Cavitation seed for drug delivery, and drug delivery method using same |
EP3302489A4 (en) | 2015-06-04 | 2019-02-06 | Sarepta Therapeutics, Inc. | Methods and compounds for treatment of lymphocyte-related diseases and conditions |
CN107708581B (en) | 2015-06-10 | 2021-11-19 | Ekos公司 | Ultrasonic wave guide tube |
WO2016210133A1 (en) | 2015-06-24 | 2016-12-29 | The Regents Of The Universtiy Of Michigan | Histotripsy therapy systems and methods for the treatment of brain tissue |
LT3554553T (en) | 2016-12-19 | 2022-08-25 | Sarepta Therapeutics, Inc. | Exon skipping oligomer conjugates for muscular dystrophy |
WO2018160752A1 (en) | 2017-02-28 | 2018-09-07 | Children's Medical Center Corporation | Stimuli-responsive particles encapsulating a gas and methods of use |
AU2019389001A1 (en) | 2018-11-28 | 2021-06-10 | Histosonics, Inc. | Histotripsy systems and methods |
US11813485B2 (en) | 2020-01-28 | 2023-11-14 | The Regents Of The University Of Michigan | Systems and methods for histotripsy immunosensitization |
US20230181620A1 (en) | 2020-01-29 | 2023-06-15 | Flagship Pioneering Innovations Vi, Llc | Compositions for translation and methods of use thereof |
TW202142239A (en) | 2020-01-29 | 2021-11-16 | 美商旗艦先鋒創新有限責任公司 | Delivery of compositions comprising circular polyribonucleotides |
US20230340451A1 (en) | 2020-01-29 | 2023-10-26 | Flagship Pioneering Innovations Vi, Llc | Compositions comprising linear polyribonucleotides for protein modulation and uses thereof |
TW202208629A (en) | 2020-05-20 | 2022-03-01 | 美商旗艦先鋒創新有限責任公司 | Immunogenic compositions and uses thereof |
WO2021236980A1 (en) | 2020-05-20 | 2021-11-25 | Flagship Pioneering Innovations Vi, Llc | Coronavirus antigen compositions and their uses |
AU2021336976A1 (en) | 2020-09-03 | 2023-03-23 | Flagship Pioneering Innovations Vi, Llc | Immunogenic compositions and uses thereof |
CA3232635A1 (en) | 2021-09-17 | 2023-03-23 | Flagship Pioneering Innovations Vi, Llc | Compositions and methods for producing circular polyribonucleotides |
WO2023069397A1 (en) | 2021-10-18 | 2023-04-27 | Flagship Pioneering Innovations Vi, Llc | Compositions and methods for purifying polyribonucleotides |
WO2023097003A2 (en) | 2021-11-24 | 2023-06-01 | Flagship Pioneering Innovations Vi, Llc | Immunogenic compositions and their uses |
WO2023096963A1 (en) | 2021-11-24 | 2023-06-01 | Flagship Pioneering Innovations Vi, Llc | Varicella-zoster virus immunogen compositions and their uses |
WO2023096990A1 (en) | 2021-11-24 | 2023-06-01 | Flagship Pioneering Innovation Vi, Llc | Coronavirus immunogen compositions and their uses |
WO2023122745A1 (en) | 2021-12-22 | 2023-06-29 | Flagship Pioneering Innovations Vi, Llc | Compositions and methods for purifying polyribonucleotides |
WO2023122789A1 (en) | 2021-12-23 | 2023-06-29 | Flagship Pioneering Innovations Vi, Llc | Circular polyribonucleotides encoding antifusogenic polypeptides |
Family Cites Families (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4718433A (en) * | 1983-01-27 | 1988-01-12 | Feinstein Steven B | Contrast agents for ultrasonic imaging |
US4572203A (en) * | 1983-01-27 | 1986-02-25 | Feinstein Steven B | Contact agents for ultrasonic imaging |
US4634586A (en) * | 1984-05-21 | 1987-01-06 | The Board Of Trustees Of The Leland Stanford Junior University | Reagent and method for radioimaging leukocytes |
US5040537A (en) * | 1987-11-24 | 1991-08-20 | Hitachi, Ltd. | Method and apparatus for the measurement and medical treatment using an ultrasonic wave |
US4844882A (en) * | 1987-12-29 | 1989-07-04 | Molecular Biosystems, Inc. | Concentrated stabilized microbubble-type ultrasonic imaging agent |
US5410516A (en) * | 1988-09-01 | 1995-04-25 | Schering Aktiengesellschaft | Ultrasonic processes and circuits for performing them |
US4957656A (en) * | 1988-09-14 | 1990-09-18 | Molecular Biosystems, Inc. | Continuous sonication method for preparing protein encapsulated microbubbles |
US5703055A (en) * | 1989-03-21 | 1997-12-30 | Wisconsin Alumni Research Foundation | Generation of antibodies through lipid mediated DNA delivery |
US5733572A (en) * | 1989-12-22 | 1998-03-31 | Imarx Pharmaceutical Corp. | Gas and gaseous precursor filled microspheres as topical and subcutaneous delivery vehicles |
US5542935A (en) * | 1989-12-22 | 1996-08-06 | Imarx Pharmaceutical Corp. | Therapeutic delivery systems related applications |
US5445813A (en) * | 1992-11-02 | 1995-08-29 | Bracco International B.V. | Stable microbubble suspensions as enhancement agents for ultrasound echography |
IN172208B (en) * | 1990-04-02 | 1993-05-01 | Sint Sa | |
US5315997A (en) * | 1990-06-19 | 1994-05-31 | Molecular Biosystems, Inc. | Method of magnetic resonance imaging using diamagnetic contrast |
AU635449B2 (en) * | 1990-10-05 | 1993-03-18 | Bracco International B.V. | Method for the preparation of stable suspensions of hollow gas-filled microspheres suitable for ultrasonic echography |
US5107842A (en) * | 1991-02-22 | 1992-04-28 | Molecular Biosystems, Inc. | Method of ultrasound imaging of the gastrointestinal tract |
DE69215722T3 (en) * | 1991-03-22 | 2001-03-08 | Katsuro Tachibana | Amplifiers for ultrasound therapy of diseases and liquid pharmaceutical compositions containing them |
DE69230885T3 (en) * | 1991-09-17 | 2008-01-24 | Ge Healthcare As | GASOUS ULTRASONIC CONTRASTING AGENTS |
US5409688A (en) * | 1991-09-17 | 1995-04-25 | Sonus Pharmaceuticals, Inc. | Gaseous ultrasound contrast media |
US5304325A (en) * | 1991-11-13 | 1994-04-19 | Hemagen/Pfc | Emulsions containing alkyl- or alkylglycerophosphoryl choline surfactants and methods of use |
US5255683A (en) * | 1991-12-30 | 1993-10-26 | Sound Science Limited Partnership | Methods of and systems for examining tissue perfusion using ultrasonic contrast agents |
IL104084A (en) * | 1992-01-24 | 1996-09-12 | Bracco Int Bv | Long-lasting aqueous suspensions of pressure-resistant gas-filled microvesicles their preparation and contrast agents consisting of them |
US5585479A (en) * | 1992-07-24 | 1996-12-17 | The United States Of America As Represented By The Secretary Of The Navy | Antisense oligonucleotides directed against human ELAM-I RNA |
US5302372A (en) * | 1992-07-27 | 1994-04-12 | National Science Council | Method to opacify left ventricle in echocardiography |
DE4232755A1 (en) * | 1992-09-26 | 1994-03-31 | Schering Ag | Microparticle preparations made from biodegradable copolymers |
CZ191695A3 (en) * | 1993-01-25 | 1996-05-15 | Sonus Pharma Inc | Biologically compatible contrast agent, process of its preparation and representation method by ultrasound |
US5439686A (en) * | 1993-02-22 | 1995-08-08 | Vivorx Pharmaceuticals, Inc. | Methods for in vivo delivery of substantially water insoluble pharmacologically active agents and compositions useful therefor |
BR9405798A (en) * | 1993-02-22 | 1995-12-12 | Vivorx Pharmaceuticals Inc | Methods for in vivo release of biological material and useful compositions thereof |
US5362478A (en) * | 1993-03-26 | 1994-11-08 | Vivorx Pharmaceuticals, Inc. | Magnetic resonance imaging with fluorocarbons encapsulated in a cross-linked polymeric shell |
US5401493A (en) * | 1993-03-26 | 1995-03-28 | Molecular Biosystems, Inc. | Perfluoro-1H,-1H-neopentyl containing contrast agents and method to use same |
US5701899A (en) * | 1993-05-12 | 1997-12-30 | The Board Of Regents Of The University Of Nebraska | Perfluorobutane ultrasound contrast agent and methods for its manufacture and use |
US5567415A (en) * | 1993-05-12 | 1996-10-22 | The Board Of Regents Of The University Of Nebraska | Ultrasound contrast agents and methods for their manufacture and use |
US5695740A (en) * | 1993-05-12 | 1997-12-09 | The Board Of Regents Of The University Of Nebraska | Perfluorocarbon ultrasound contrast agent comprising microbubbles containing a filmogenic protein and a saccharide |
HUT74827A (en) * | 1993-07-02 | 1997-02-28 | Molecular Biosystems Inc | Protein encapsulated insoluble gas microspheres and their preparation and use as ultrasonic imaging agents |
US5385147A (en) * | 1993-09-22 | 1995-01-31 | Molecular Biosystems, Inc. | Method of ultrasonic imaging of the gastrointestinal tract and upper abdominal organs using an orally administered negative contrast medium |
NO940711D0 (en) * | 1994-03-01 | 1994-03-01 | Nycomed Imaging As | Preparation of gas-filled microcapsules and contrast agents for diagnostic imaging |
US5540909A (en) * | 1994-09-28 | 1996-07-30 | Alliance Pharmaceutical Corp. | Harmonic ultrasound imaging with microbubbles |
US5560364A (en) * | 1995-05-12 | 1996-10-01 | The Board Of Regents Of The University Of Nebraska | Suspended ultra-sound induced microbubble cavitation imaging |
ATE248511T1 (en) * | 1996-03-12 | 2003-09-15 | Univ Nebraska | COMPOSITION FOR TARGETED ADMINISTRATION OF A MEDICATION AND METHOD OF USE |
US5849727A (en) * | 1996-06-28 | 1998-12-15 | Board Of Regents Of The University Of Nebraska | Compositions and methods for altering the biodistribution of biological agents |
-
1996
- 1996-06-28 US US08/670,999 patent/US5849727A/en not_active Expired - Lifetime
-
1997
- 1997-06-20 AT AT97932228T patent/ATE260677T1/en not_active IP Right Cessation
- 1997-06-20 EP EP97932228A patent/EP0938341B1/en not_active Expired - Lifetime
- 1997-06-20 CA CA002258882A patent/CA2258882C/en not_active Expired - Lifetime
- 1997-06-20 DE DE69727958T patent/DE69727958T2/en not_active Expired - Lifetime
- 1997-06-20 WO PCT/US1997/010766 patent/WO1998000172A2/en active IP Right Grant
- 1997-06-20 JP JP50420598A patent/JP4201348B2/en not_active Expired - Lifetime
-
1998
- 1998-07-17 US US09/118,168 patent/US6117858A/en not_active Expired - Lifetime
-
2000
- 2000-06-09 US US09/591,380 patent/US6537814B1/en not_active Expired - Lifetime
-
2003
- 2003-01-31 US US10/355,388 patent/US7115583B2/en not_active Expired - Fee Related
- 2003-09-22 US US10/668,448 patent/US7198949B2/en not_active Expired - Fee Related
-
2008
- 2008-07-24 JP JP2008191487A patent/JP2009029810A/en not_active Ceased
Also Published As
Publication number | Publication date |
---|---|
DE69727958T2 (en) | 2005-04-07 |
CA2258882A1 (en) | 1998-01-08 |
JP4201348B2 (en) | 2008-12-24 |
US20040057946A1 (en) | 2004-03-25 |
US5849727A (en) | 1998-12-15 |
EP0938341B1 (en) | 2004-03-03 |
US20040013662A1 (en) | 2004-01-22 |
US7115583B2 (en) | 2006-10-03 |
US6117858A (en) | 2000-09-12 |
WO1998000172A2 (en) | 1998-01-08 |
ATE260677T1 (en) | 2004-03-15 |
WO1998000172A3 (en) | 1998-05-14 |
US7198949B2 (en) | 2007-04-03 |
DE69727958D1 (en) | 2004-04-08 |
US6537814B1 (en) | 2003-03-25 |
EP0938341A2 (en) | 1999-09-01 |
JP2000515499A (en) | 2000-11-21 |
JP2009029810A (en) | 2009-02-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CA2258882C (en) | Compositions and methods for altering the biodistribution of biological agents | |
US6245747B1 (en) | Targeted site specific antisense oligodeoxynucleotide delivery method | |
AU725693B2 (en) | Targeted site specific drug delivery compositions and method of use | |
Porter et al. | Interaction of diagnostic ultrasound with synthetic oligonucleotide‐labeled perfluorocarbon‐exposed sonicated dextrose albumin microbubbles. | |
JP2008538367A (en) | Pharmaceutical composition containing gas filled microcapsules for ultrasound mediated delivery | |
AU2005273865B2 (en) | Gas-filled microvesicles composition for contrast imaging | |
US20010031740A1 (en) | Methods for delivering compounds into a cell | |
JP2001503407A (en) | Improved diagnostic / therapeutic agents | |
CA2337361C (en) | Targeted site specific drug delivery compositions and method of use | |
JP2001511765A (en) | Improved diagnostic / therapeutic agents | |
JP6059725B2 (en) | Microbubble composite and method of use | |
JP4774135B2 (en) | Targeted site-specific drug delivery compositions and uses thereof | |
KR100649035B1 (en) | Targeted site specific drug delivery compositions and method of use | |
JP2001502719A (en) | Improved diagnostic / therapeutic agents | |
JP2002515889A (en) | Improved diagnostic / therapeutic agents |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
EEER | Examination request | ||
MKEX | Expiry |
Effective date: 20170620 |