US20030003498A1 - Method, apparatus and kits for sequencing of nucleic acids using multiple dyes - Google Patents
Method, apparatus and kits for sequencing of nucleic acids using multiple dyes Download PDFInfo
- Publication number
- US20030003498A1 US20030003498A1 US10/217,615 US21761502A US2003003498A1 US 20030003498 A1 US20030003498 A1 US 20030003498A1 US 21761502 A US21761502 A US 21761502A US 2003003498 A1 US2003003498 A1 US 2003003498A1
- Authority
- US
- United States
- Prior art keywords
- mixture
- sample
- combined
- sequencing
- different
- 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.)
- Abandoned
Links
- 238000012163 sequencing technique Methods 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims description 32
- 150000007523 nucleic acids Chemical class 0.000 title claims description 15
- 108020004707 nucleic acids Proteins 0.000 title claims description 13
- 102000039446 nucleic acids Human genes 0.000 title claims description 13
- 239000000975 dye Substances 0.000 title description 2
- 108091034117 Oligonucleotide Proteins 0.000 claims abstract description 36
- 230000005284 excitation Effects 0.000 claims abstract description 34
- 238000000926 separation method Methods 0.000 claims abstract description 25
- 238000000295 emission spectrum Methods 0.000 claims abstract description 23
- 238000000695 excitation spectrum Methods 0.000 claims abstract description 22
- 239000011541 reaction mixture Substances 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 19
- 239000000203 mixture Substances 0.000 claims description 48
- 239000012634 fragment Substances 0.000 claims description 33
- 239000003153 chemical reaction reagent Substances 0.000 claims description 29
- 238000001514 detection method Methods 0.000 claims description 22
- 239000011159 matrix material Substances 0.000 claims description 22
- 108090000623 proteins and genes Proteins 0.000 claims description 13
- 239000002777 nucleoside Substances 0.000 claims description 12
- 108020004414 DNA Proteins 0.000 claims description 10
- 150000003833 nucleoside derivatives Chemical class 0.000 claims description 9
- 108090000790 Enzymes Proteins 0.000 claims description 8
- 102000004190 Enzymes Human genes 0.000 claims description 8
- 239000007850 fluorescent dye Substances 0.000 claims description 7
- 229920000642 polymer Polymers 0.000 claims description 7
- 230000005684 electric field Effects 0.000 claims description 4
- 108091028043 Nucleic acid sequence Proteins 0.000 claims description 3
- 239000000047 product Substances 0.000 abstract description 21
- 238000001962 electrophoresis Methods 0.000 abstract description 4
- 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 3
- 239000007795 chemical reaction product Substances 0.000 abstract description 2
- 230000003287 optical effect Effects 0.000 description 30
- 239000000523 sample Substances 0.000 description 23
- 238000004458 analytical method Methods 0.000 description 3
- 238000001506 fluorescence spectroscopy Methods 0.000 description 3
- 125000003835 nucleoside group Chemical group 0.000 description 3
- 108700024394 Exon Proteins 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 239000002773 nucleotide Substances 0.000 description 2
- 125000003729 nucleotide group Chemical group 0.000 description 2
- 239000013307 optical fiber Substances 0.000 description 2
- BZTDTCNHAFUJOG-UHFFFAOYSA-N 6-carboxyfluorescein Chemical compound C12=CC=C(O)C=C2OC2=CC(O)=CC=C2C11OC(=O)C2=CC=C(C(=O)O)C=C21 BZTDTCNHAFUJOG-UHFFFAOYSA-N 0.000 description 1
- 102000004594 DNA Polymerase I Human genes 0.000 description 1
- 108010017826 DNA Polymerase I Proteins 0.000 description 1
- 238000001712 DNA sequencing Methods 0.000 description 1
- 102000016928 DNA-directed DNA polymerase Human genes 0.000 description 1
- 108010014303 DNA-directed DNA polymerase Proteins 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000000376 autoradiography Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000005546 dideoxynucleotide Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 239000003068 molecular probe Substances 0.000 description 1
- 239000013610 patient sample Substances 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- MPLHNVLQVRSVEE-UHFFFAOYSA-N texas red Chemical compound [O-]S(=O)(=O)C1=CC(S(Cl)(=O)=O)=CC=C1C(C1=CC=2CCCN3CCCC(C=23)=C1O1)=C2C1=C(CCC1)C3=[N+]1CCCC3=C2 MPLHNVLQVRSVEE-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Q—MEASURING OR TESTING PROCESSES INVOLVING ENZYMES, NUCLEIC ACIDS OR MICROORGANISMS; COMPOSITIONS OR TEST PAPERS THEREFOR; PROCESSES OF PREPARING SUCH COMPOSITIONS; CONDITION-RESPONSIVE CONTROL IN MICROBIOLOGICAL OR ENZYMOLOGICAL PROCESSES
- C12Q1/00—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions
- C12Q1/68—Measuring or testing processes involving enzymes, nucleic acids or microorganisms; Compositions therefor; Processes of preparing such compositions involving nucleic acids
- C12Q1/6869—Methods for sequencing
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/10—Processes for the isolation, preparation or purification of DNA or RNA
- C12N15/1034—Isolating an individual clone by screening libraries
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/66—General methods for inserting a gene into a vector to form a recombinant vector using cleavage and ligation; Use of non-functional linkers or adaptors, e.g. linkers containing the sequence for a restriction endonuclease
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/70—Vectors or expression systems specially adapted for E. coli
Definitions
- This application relates to an improved method for sequencing of nucleic acids using multiple fluorescent labels, and to apparatus and kits adapted for use with the method.
- Sequencing of nucleic acids using the chain termination method involves the general steps of combining the target nucleic acid polymer to be sequenced with a sequencing primer which hybridizes with the target nucleic acid polymer; extending the sequencing primer in the presence of normal nucleotide (A, C, G, and T) and a chain-terminating nucleotide, such as a dideoxynucleotide, which prevents further extension of the primer once incorporated; and analyzing the product for the length of the extended fragments obtained. Analysis of fragments may be done by electrophoresis, for example on a polyacrylamide gel.
- U.S. Pat. No. 5,171,534 which is incorporated herein by reference describes a variation of this basic sequencing procedure in which four different fluorescent labels are employed, one for each sequencing reaction.
- the fragments developed in the A, G, C and T sequencing reactions are then recombined and introduced together onto a separation matrix.
- a system of optical filters is used to individually detect the fluorophores as they pass the detector. This allows the throughput of a sequencing apparatus to be increased by a factor of four, since the four sequencing reaction which were previously run in four separate lanes or capillaries can now be run in one.
- a first aspect of the invention provides a method for evaluating the sequence of a target nucleic acid polymer in a plurality of samples.
- each sample is first divided into four aliquots which are combined with four sequencing reaction mixtures.
- Each sequencing reaction mixture contains a polymerase enzyme, a primer for hybridizing with the target nucleic acid, nucleoside feedstocks and a different dideoxynucleoside.
- the A-mixtures for each sample are combined to form a combined A mixture
- the C-mixtures are combined to form a combined G-mixture and so on for all four mixtures.
- the combined mixtures are loaded onto a separation matrix at separate loading sites and an electric field is applied to cause the product oligonucleotide fragments to migrate within the separation matrix.
- the separated product oligonucleotide fragments having the different fluorescent tags are detected as they migrate within the separation matrix.
- the method of the invention can be used as described above to determine the position of every base in the sequence, or it can be used to determine the position of less than all four bases.
- the method can be used to determine the position of only the A bases within a sequence for some diagnostic applications.
- a further aspect of the present invention is a kit useful for diagnostic sequencing of a selected portion of a gene.
- One embodiment of such a kit contains a plurality of sequencing primers for the selected portion of the gene, each sequencing primer being identical in its DNA sequence but being labeled with a different fluorescent tag.
- a further aspect of the invention is an apparatus for performing the method of the invention.
- Such an apparatus comprises
- configuration control means operatively connected to the means for providing excitation energy and the means for detecting to provide combinations of excitation wavelength and detection wavelength specific for a plurality of different fluorescently-labeled oligonucleotide fragments;
- data processing means operatively connected to the configuration control means and the means for detecting for receiving a signal from the means for detecting and assigning that signal to a data stream based upon the combination of excitation wavelength and detection wavelength set by the configuration control means.
- FIGS. 1A and B shows a schematic representation of the method of the invention
- FIGS. 2A, B, C, and D show excitation and emission spectra for theoretical sets of useful fluorescent tags
- FIG. 3 shows an apparatus for evaluating the sequence of nucleic acid polymers using the method of the invention.
- FIG. 1A shows a schematic representation of one embodiment of the method of the invention.
- the figure depicts the application of the method to two samples for clarity.
- the method of the invention is not limited to two samples, and is in fact preferably applied for four or more samples, up to a limit imposed only by the number of distinguishable tags which can be identified.
- sample 1 two samples, “sample 1” and “sample 2” are each divided into four aliquots and these aliquots are introduced into sequencing reactions A1, C1, G1, and T1, and A2, C2, G2 and T2.
- Each sequencing reaction contains the reagents necessary for producing product oligonucleotide fragments of varying lengths indicative of the position of one-base within the target nucleic acid sequence.
- reagents include a polymerase enzyme, for example T7 polymerase, SequenaseTM, Thermo SequenaseTM, or the Klenow fragment of DNA polymerase; A, C, G and T nucleoside feedstocks; one type of chain terminating dideoxynucleoside; and a sequencing primer.
- a polymerase enzyme for example T7 polymerase, SequenaseTM, Thermo SequenaseTM, or the Klenow fragment of DNA polymerase
- A, C, G and T nucleoside feedstocks one type of chain terminating dideoxynucleoside
- a sequencing primer for example T7 polymerase, SequenaseTM, Thermo SequenaseTM, or the Klenow fragment of DNA polymerase
- A, C, G and T nucleoside feedstocks for example, C, G and T nucleoside feedstocks
- one type of chain terminating dideoxynucleoside for example T7 polyme
- the products from reaction mixture A1 are combined with the products from reaction mixture A2 to form a combined mixture 10 which is loaded onto lane 1 of a separation matrix.
- the products from reaction mixture C1 are combined with the products from reaction mixture C2 to form a combined mixture 11 which is loaded onto lane 2 of the separation matrix;
- the products from reaction mixture C1 are combined with the products from reaction mixture G2 to form a combined mixture 12 which is loaded onto lane 3 of the separation matrix;
- the products from reaction mixture T1 are combined with the products from reaction mixture T2 to form a combined mixture 13 which is loaded onto lane 4 of the separation matrix.
- the key to the present invention is the use of labels in the reactions A1, C1, G1, and T1 which are distinguishable from the labels used in reactions A2, C2, C2 and T2, respectively.
- the labels used for the four sequencing reactions for any one sample can be, and preferably are, the same. Instead, it is the labels which are used in the several samples which are distinct in the method of the invention.
- FIG. 1B An alternative embodiment of the invention is illustrated in FIG. 1B.
- the operator wants to sequence a plurality of genes (or different exons of the same gene) from one patient sample.
- the sample 20 is divided into four aliquots.
- a sequencing reaction mix containing the reagents necessary for producing product oligonucleotide fragments of varying lengths is added to each aliquot.
- the sequencing mix added to a first aliquot contains all of the reagents for an A termination reaction, plus a plurality of sequencing primers, each one labeled with a distinguishable fluorophore, and each one being specific for a different gene (or different exon of the same gene).
- the sequencing mix added to a second aliquot contains all of the reagents for a C termination reaction, plus the same plurality of sequencing primers. Sequencing reaction mixes for G and T are made in the same fashion. These sequencing mixture are reacted to produce oligonucleotides fragments, and then loaded onto lanes 21, 22, 23, and 24 of a sequencing gel and separated. Using this technique, any number of genes or exons in a sample can be simultaneously sequenced up to the limit imposed by the number distinguishable tags which can be identified.
- Suitable labels for use in the present invention are fluorescent tags. These can be incorporated into the product oligonucleotide fragments in any way, including the use of fluorescently tagged primers or fluorescently tagged chain terminating reagents.
- the fluorescent tags selected for use in the present invention must be distinguishable one from another based on their excitation and/or emission spectra. For example, as shown in FIG. 2A, a set of tags could be selected which had overlapping emission spectra (Em1, Em2, Em3 and Em4) but separate and distinguishable excitation spectra (Exl, Ex2, Ex3, and Ex4). A set of tags could also be selected which had overlapping excitation spectra but separate and distinguishable emission spectra as shown in FIG. 2B. Further, as shown in FIG.
- a set of tags could be selected in which some of the tags have overlapping excitation spectra (Ex1 and Ex2) but separate and distinguishable emission spectra (Em1 is distinguishable from Em2); while the others have separate and distinguishable excitation spectra (Ex1, Ex3, and Ex4) but overlapping emission spectra (Em1, Em3 and Em4).
- a further combination of excitation and emission spectra is shown in FIG. 2D.
- FIG. 3 shows a basic layout for an apparatus for evaluating the sequence of nucleic acid polymers using the method of the invention.
- a light source 31 which may be for example a laser, a light emitting diode, a laser diode, an incandescent or polychromatic lamp, or any combination of such sources, is passed through an optical filter 32 to select an appropriate excitation wavelength which is directed to a detection site 33 in a separation matrix 34 .
- Light emitted by fluorescent tags in the detection site 33 passes through a second optical filter 35 to a detector 36 .
- Either or both of the optical filters 32 and 36 may be adjustable under the control of a microprocessor, minicomputer or personal computer 37 to provide various configurations of excitation and emission wavelengths as discussed more fully below.
- the output from the detector is then transmitted to a data processing system such as a dedicated microprocessor, minicomputer or personal computer 37 for analysis to produce a report on the sequence of the sample being evaluated.
- the optical filter 32 may adjustable, for example by rotating several different filters through the path of the excitation beam, to produce excitation beams corresponding to the different excitation wavelengths of the tags.
- Optical filter 35 may then be simply a cut-off filter selected to exclude light of the excitation wavelengths from the detector. Information concerning the position of the optical filter 32 as a function of time is transmitted to the data processing system, and used to permit interpretation of the fluorescence data.
- the data processing system interprets the emission intensity as data for the sequence of sample 1; when the optical filter 32 is in a position that corresponds to the excitation spectrum of the tag used to label sample 2, the data processing system interprets the emission intensity as data for the sequence of sample 2 and so on for as many different tags are used.
- the optical filter 35 is adjustable, for example by rotating several different filters through the path of the excitation beam, to selectively collect emissions wavelengths corresponding to the different tags.
- Optical filter 32 may be simply a cut-off or band-pass filter selected to exclude light of the emission wavelengths from the detector. Information concerning the position of the optical filter 35 as a function of time is transmitted to the data processing system, and used to permit interpretation of the fluorescence data.
- the data processing system interprets the emission intensity as data for the sequence of sample 1; when the optical filter 35 is in a position that corresponds to the emission spectrum of the tag used to label sample 2, the data processing system interprets the emission intensity as data for the sequence of sample 2 and so on for as many different tags are used.
- both optical filter 32 and optical 35 are adjustable in synchronization to control the excitation and emission wavelengths being monitored.
- Information concerning the position of the optical filters 32 and 35 as a function of time is transmitted to the data processing system, and used to permit interpretation of the fluorescence data.
- the data processing system interprets the emission intensity as data for the sequence of the sample labeled with tag 1.
- the data processing system interprets the emission intensity as data for the sequence of the of sample labeled with tag 2.
- the light source 31 may be a single light source which is moved across the gel to irradiate each detection zone individually, for example as described in U.S. Pat. No. 5,207,880 which is incorporated herein by reference.
- the light source 31 may also be a singe light source which is split into multiple beamlets, for example using optical fibers or through the use of a beam splitter such as a spot array generation grating to each of the detection sites as described generally in U.S. patent application Ser. No. 08/353,932 and PCT Patent Application No. PCT/US95/15951 which are incorporated herein by reference.
- the light source 31 may also be multiple individual light sources, each of which irradiates a subset of one or more of the detection sites within the separation matrix.
- optical filter 32 described above can be used effectively to provide selection of excitation wavelength, it will be understood that other approaches to providing different excitation wavelengths can be used as well.
- a plurality of lasers of different wavelengths could be used, with the light from each directed in turn to the detection site.
- one set of lasers might be used (one for each necessary wavelength) with light from each of the lasers being conducted by optical fibers or through the use of a beam splitter such as a spot array generation grating to each of the detection sites as described generally in U.S. patent application Ser. No. 08/353,932 and PCT Patent Application No. PCT/US95/15951.
- Optical switches operatively connected to the data processing system, are used to select which of the excitation wavelengths is striking the detection zone at any given time, in the same manner as a rotating optical filter could do.
- a detector assembly which scans across the lanes of an electrophoresis gel could also be used, for example as described in U.S. Pat. Nos. 5,360,523 and 5,100,529, which are incorporated herein by reference, although the time required for such a device to scan all the lanes of a gel may be a limiting factor in applications with short total migration times.
- optical filter 35 Other optical components which separate light by wavelength may also be used in place of optical filter 35 .
- a diffraction grating or prism which spatially separates light of differing wavelength may be employed.
- radiation from the different fluorophores will be distributed in space, and can be detected by dedicated detectors such as photodiodes, CCD elements (linear or X-Y).
- distinct optical filters for each wavelength can be employed in combination with a multiplicity of detectors.
- Optical filters which are transmissive at the emission wavelength of one fluorophore and reflective at the emission wavelength of a second fluorophore can also be used to direct emitted light to separate detectors depending on wavelength.
- the detectors used in the apparatus of the invention may be photomultipliers, photodiodes or a CCD.
- the apparatus can be configured with one or more detectors for each detection site.
- the apparatus can also be configured such that one detector overlaps with several detection sites if the excitation light is directed to the detection sites one at a time.
- the apparatus can use a single detector (or a small array of detectors) which is scanned across the gel during detection.
- kits For determining the sequence of a selected region of DNA using the method of the invention, a kit may be formulated.
- a kit comprises, in packaged combination, a plurality of containers, each containing a reagent for the sequencing of the selected region of DNA.
- the reagent in each container has a reactive portion, which is involved in the sequencing reaction, and a fluorescent label portion.
- the label portions of the reagents in each container are different and distinguishable one from the other on the basis of the excitation or emission spectra thereof.
- a kit in accordance with the invention comprises a plurality of primers for sequencing the selected region, each of the primers having a different and distinguishable fluorescent label.
- the reactive portions of the reagents in this case are the oligonucleotide primer to which the labels are attached.
- the reactive portions may be different from one another, but are preferably the same.
- Such a kit may also include additional reagents for sequencing, including polymerase enzymes, dideoxynucleosides and buffers.
- the kit may contain one primer for the selected region and a plurality of containers of chain-terminating nucleosides, each labeled with a different and distinguishable fluorescent label.
- the reactive portion of the reagent is the chain terminating nucleoside which can be incorporated in place of a normal nucleoside during the sequencing reaction.
- the kit may include reagents having just one type of chain-terminating nucleoside, for example ddA with a plurality of distinct fluorescent labels, or it may include reagents having two or more types of chain-terminating nucleosides, each with a plurality of distinct labels.
- kit may also include additional reagents for sequencing, including polymerase enzymes and buffers, as well as additional chain-terminating nucleosides (single-labeled) for those not provided as part of a multi-label reagent set.
- additional reagents for sequencing including polymerase enzymes and buffers, as well as additional chain-terminating nucleosides (single-labeled) for those not provided as part of a multi-label reagent set.
- a suitable kit in accordance with the invention includes at least one container containing a mixture of a plurality of sequencing primers, one for each gene region to be evaluated.
- the plurality of sequencing primers each comprise a reactive portion which hybridizes with DNA in the sample and a label portion, the label portions of the reagents being different and distinguishable one from the other.
- the detectable labels are fluorescent tags, distinguishable one from the other by their emission or excitation spectra.
Abstract
Description
- This application relates to an improved method for sequencing of nucleic acids using multiple fluorescent labels, and to apparatus and kits adapted for use with the method.
- Sequencing of nucleic acids using the chain termination method involves the general steps of combining the target nucleic acid polymer to be sequenced with a sequencing primer which hybridizes with the target nucleic acid polymer; extending the sequencing primer in the presence of normal nucleotide (A, C, G, and T) and a chain-terminating nucleotide, such as a dideoxynucleotide, which prevents further extension of the primer once incorporated; and analyzing the product for the length of the extended fragments obtained. Analysis of fragments may be done by electrophoresis, for example on a polyacrylamide gel.
- Although this type of analysis was originally performed using radiolabeled fragments which were detected by autoradiography after separation, modern automated DNA sequencers generally are designed for use with sequencing fragments having a fluorescent label. The fluorescently labeled fragments are detected in real time as they migrate past a detector.
- U.S. Pat. No. 5,171,534 which is incorporated herein by reference describes a variation of this basic sequencing procedure in which four different fluorescent labels are employed, one for each sequencing reaction. The fragments developed in the A, G, C and T sequencing reactions are then recombined and introduced together onto a separation matrix. A system of optical filters is used to individually detect the fluorophores as they pass the detector. This allows the throughput of a sequencing apparatus to be increased by a factor of four, since the four sequencing reaction which were previously run in four separate lanes or capillaries can now be run in one.
- It is an object of the present invention to provide a further improvement for use with chain termination sequencing reactions which can further increase the throughput of an instrument.
- In order to use nucleic acid sequencing as a diagnostic tool, it will be necessary to determine the sequence of the same DNA region from many samples. The present invention makes it possible to increase the throughput of an instrument being used for this purpose. Thus, a first aspect of the invention provides a method for evaluating the sequence of a target nucleic acid polymer in a plurality of samples. In this method, each sample is first divided into four aliquots which are combined with four sequencing reaction mixtures. Each sequencing reaction mixture contains a polymerase enzyme, a primer for hybridizing with the target nucleic acid, nucleoside feedstocks and a different dideoxynucleoside. This results in the formation of an A-mixture, a C-mixture, a T-mixture and a C-mixture for each sample containing product oligonucleotide fragments of varying lengths. The product oligonucleotide fragments are labeled with fluorescent tags, and these tags will generally be the same for all four sequencing reactions for a sample. However, the fluorescent tags used for each sample are distinguishable one from the other on the basis of their excitation or emission spectra.
- Next, the A-mixtures for each sample are combined to form a combined A mixture, the C-mixtures are combined to form a combined G-mixture and so on for all four mixtures. The combined mixtures are loaded onto a separation matrix at separate loading sites and an electric field is applied to cause the product oligonucleotide fragments to migrate within the separation matrix. The separated product oligonucleotide fragments having the different fluorescent tags are detected as they migrate within the separation matrix.
- The method of the invention can be used as described above to determine the position of every base in the sequence, or it can be used to determine the position of less than all four bases. For example, the method can be used to determine the position of only the A bases within a sequence for some diagnostic applications.
- A further aspect of the present invention is a kit useful for diagnostic sequencing of a selected portion of a gene. One embodiment of such a kit contains a plurality of sequencing primers for the selected portion of the gene, each sequencing primer being identical in its DNA sequence but being labeled with a different fluorescent tag.
- A further aspect of the invention is an apparatus for performing the method of the invention. Such an apparatus comprises
- (a) means for providing excitation energy to a detection site within a separation matrix disposed within the apparatus;
- (b) means for detecting light emitted from fluorescently-labeled oligonucleotide fragments located within the detection site;
- (c) configuration control means, operatively connected to the means for providing excitation energy and the means for detecting to provide combinations of excitation wavelength and detection wavelength specific for a plurality of different fluorescently-labeled oligonucleotide fragments; and
- (d) data processing means, operatively connected to the configuration control means and the means for detecting for receiving a signal from the means for detecting and assigning that signal to a data stream based upon the combination of excitation wavelength and detection wavelength set by the configuration control means.
- FIGS. 1A and B shows a schematic representation of the method of the invention;
- FIGS. 2A, B, C, and D show excitation and emission spectra for theoretical sets of useful fluorescent tags; and
- FIG. 3 shows an apparatus for evaluating the sequence of nucleic acid polymers using the method of the invention.
- FIG. 1A shows a schematic representation of one embodiment of the method of the invention. The figure depicts the application of the method to two samples for clarity. As will be apparent from the discussion below, however, the method of the invention is not limited to two samples, and is in fact preferably applied for four or more samples, up to a limit imposed only by the number of distinguishable tags which can be identified.
- As shown in FIG. 1A, two samples, “
sample 1” and “sample 2” are each divided into four aliquots and these aliquots are introduced into sequencing reactions A1, C1, G1, and T1, and A2, C2, G2 and T2. Each sequencing reaction contains the reagents necessary for producing product oligonucleotide fragments of varying lengths indicative of the position of one-base within the target nucleic acid sequence. These reagents include a polymerase enzyme, for example T7 polymerase, Sequenase™, Thermo Sequenase™, or the Klenow fragment of DNA polymerase; A, C, G and T nucleoside feedstocks; one type of chain terminating dideoxynucleoside; and a sequencing primer. - After the product oligonucleotide fragments are formed in each reaction mixture, the products from reaction mixture A1 are combined with the products from reaction mixture A2 to form a combined
mixture 10 which is loaded ontolane 1 of a separation matrix. Likewise, the products from reaction mixture C1 are combined with the products from reaction mixture C2 to form a combinedmixture 11 which is loaded ontolane 2 of the separation matrix; the products from reaction mixture C1 are combined with the products from reaction mixture G2 to form a combinedmixture 12 which is loaded ontolane 3 of the separation matrix; and the products from reaction mixture T1 are combined with the products from reaction mixture T2 to form a combinedmixture 13 which is loaded ontolane 4 of the separation matrix. - The key to the present invention is the use of labels in the reactions A1, C1, G1, and T1 which are distinguishable from the labels used in reactions A2, C2, C2 and T2, respectively. Thus, unlike the method described in U.S. Pat. No. 5,171,534 where the labels used for the A, C, C, and T reactions for a sample are distinct, in the present invention the labels used for the four sequencing reactions for any one sample can be, and preferably are, the same. Instead, it is the labels which are used in the several samples which are distinct in the method of the invention.
- An alternative embodiment of the invention is illustrated in FIG. 1B. In this case, the operator wants to sequence a plurality of genes (or different exons of the same gene) from one patient sample. The
sample 20 is divided into four aliquots. A sequencing reaction mix containing the reagents necessary for producing product oligonucleotide fragments of varying lengths is added to each aliquot. The sequencing mix added to a first aliquot contains all of the reagents for an A termination reaction, plus a plurality of sequencing primers, each one labeled with a distinguishable fluorophore, and each one being specific for a different gene (or different exon of the same gene). The sequencing mix added to a second aliquot contains all of the reagents for a C termination reaction, plus the same plurality of sequencing primers. Sequencing reaction mixes for G and T are made in the same fashion. These sequencing mixture are reacted to produce oligonucleotides fragments, and then loaded ontolanes - Suitable labels for use in the present invention are fluorescent tags. These can be incorporated into the product oligonucleotide fragments in any way, including the use of fluorescently tagged primers or fluorescently tagged chain terminating reagents.
- The fluorescent tags selected for use in the present invention must be distinguishable one from another based on their excitation and/or emission spectra. For example, as shown in FIG. 2A, a set of tags could be selected which had overlapping emission spectra (Em1, Em2, Em3 and Em4) but separate and distinguishable excitation spectra (Exl, Ex2, Ex3, and Ex4). A set of tags could also be selected which had overlapping excitation spectra but separate and distinguishable emission spectra as shown in FIG. 2B. Further, as shown in FIG. 2C, a set of tags could be selected in which some of the tags have overlapping excitation spectra (Ex1 and Ex2) but separate and distinguishable emission spectra (Em1 is distinguishable from Em2); while the others have separate and distinguishable excitation spectra (Ex1, Ex3, and Ex4) but overlapping emission spectra (Em1, Em3 and Em4). A further combination of excitation and emission spectra is shown in FIG. 2D.
- Examples of sets of suitable tags, together with the wavelength maximum for the excitation and emission spectra are shown in Table 1. Many other fluorophores are available that can be used as labels for DNA sequencing reaction products. Such dyes are available from Applied Biosystems, Inc. (Foster City, Calif.), Molecular Probes, Inc. (Oregon) and others.
TABLE 1 Fluorescent Dye's suitable for use with the invention Excitation Fluorescent Dye Max (nm) Emission Max (nm) Texas Red X 599 617 Carboxy-X-Rhodamine 585 612 CarboxyFluorescein 494 521 CarboxyTetraMethylRhodamine 561 591 Carboxycyanine 5.0 650 667 - FIG. 3 shows a basic layout for an apparatus for evaluating the sequence of nucleic acid polymers using the method of the invention. Light from a
light source 31, which may be for example a laser, a light emitting diode, a laser diode, an incandescent or polychromatic lamp, or any combination of such sources, is passed through anoptical filter 32 to select an appropriate excitation wavelength which is directed to adetection site 33 in aseparation matrix 34. Light emitted by fluorescent tags in thedetection site 33 passes through a secondoptical filter 35 to adetector 36. Either or both of theoptical filters personal computer 37 to provide various configurations of excitation and emission wavelengths as discussed more fully below. The output from the detector is then transmitted to a data processing system such as a dedicated microprocessor, minicomputer orpersonal computer 37 for analysis to produce a report on the sequence of the sample being evaluated. - In the case where the properties of the selected tags are of the type shown in FIG. 2A, the
optical filter 32 may adjustable, for example by rotating several different filters through the path of the excitation beam, to produce excitation beams corresponding to the different excitation wavelengths of the tags.Optical filter 35 may then be simply a cut-off filter selected to exclude light of the excitation wavelengths from the detector. Information concerning the position of theoptical filter 32 as a function of time is transmitted to the data processing system, and used to permit interpretation of the fluorescence data. Thus, when theoptical filter 32 is in a position that corresponds to the excitation spectrum of the tag used to labelsample 1, the data processing system interprets the emission intensity as data for the sequence ofsample 1; when theoptical filter 32 is in a position that corresponds to the excitation spectrum of the tag used to labelsample 2, the data processing system interprets the emission intensity as data for the sequence ofsample 2 and so on for as many different tags are used. - In the case where the properties of the selected tags are of the type shown in FIG. 2B, the
optical filter 35 is adjustable, for example by rotating several different filters through the path of the excitation beam, to selectively collect emissions wavelengths corresponding to the different tags.Optical filter 32 may be simply a cut-off or band-pass filter selected to exclude light of the emission wavelengths from the detector. Information concerning the position of theoptical filter 35 as a function of time is transmitted to the data processing system, and used to permit interpretation of the fluorescence data. Thus, when theoptical filter 35 is in a position that corresponds to the emission spectrum of the tag used to labelsample 1, the data processing system interprets the emission intensity as data for the sequence ofsample 1; when theoptical filter 35 is in a position that corresponds to the emission spectrum of the tag used to labelsample 2, the data processing system interprets the emission intensity as data for the sequence ofsample 2 and so on for as many different tags are used. - Finally, in the case where the properties of the selected tags are of the type shown in FIG. 2C, both
optical filter 32 and optical 35 are adjustable in synchronization to control the excitation and emission wavelengths being monitored. Information concerning the position of theoptical filters optical filter 32 is in a position that corresponds to excitation spectrum Ex1 in FIG. 2C, andoptical filter 35 is in a position that transmits the light of the wavelength of emission spectrum Em1, the data processing system interprets the emission intensity as data for the sequence of the sample labeled withtag 1. When theoptical filter 35 is in a position to transmit light of the wavelength of emission spectrum Em2, on the other hand, the data processing system interprets the emission intensity as data for the sequence of the of sample labeled withtag 2. - The
light source 31 may be a single light source which is moved across the gel to irradiate each detection zone individually, for example as described in U.S. Pat. No. 5,207,880 which is incorporated herein by reference. Thelight source 31 may also be a singe light source which is split into multiple beamlets, for example using optical fibers or through the use of a beam splitter such as a spot array generation grating to each of the detection sites as described generally in U.S. patent application Ser. No. 08/353,932 and PCT Patent Application No. PCT/US95/15951 which are incorporated herein by reference. Thelight source 31 may also be multiple individual light sources, each of which irradiates a subset of one or more of the detection sites within the separation matrix. - While
optical filter 32 described above can be used effectively to provide selection of excitation wavelength, it will be understood that other approaches to providing different excitation wavelengths can be used as well. For example a plurality of lasers of different wavelengths could be used, with the light from each directed in turn to the detection site. For detection of product oligonucleotide fragments in multiple lanes of an electrophoresis gel, one set of lasers might be used (one for each necessary wavelength) with light from each of the lasers being conducted by optical fibers or through the use of a beam splitter such as a spot array generation grating to each of the detection sites as described generally in U.S. patent application Ser. No. 08/353,932 and PCT Patent Application No. PCT/US95/15951. Optical switches, operatively connected to the data processing system, are used to select which of the excitation wavelengths is striking the detection zone at any given time, in the same manner as a rotating optical filter could do. A detector assembly which scans across the lanes of an electrophoresis gel could also be used, for example as described in U.S. Pat. Nos. 5,360,523 and 5,100,529, which are incorporated herein by reference, although the time required for such a device to scan all the lanes of a gel may be a limiting factor in applications with short total migration times. - It will also be appreciated that multiple optical filters mounted on individual detectors could be used in place of the adjustable
optical filter 35 and thesingle detector 36 shown in FIG. 3. Similarly several detectors with adjustable optical filters might also be used. - Other optical components which separate light by wavelength may also be used in place of
optical filter 35. Thus, for example, a diffraction grating or prism which spatially separates light of differing wavelength may be employed. In this case, radiation from the different fluorophores will be distributed in space, and can be detected by dedicated detectors such as photodiodes, CCD elements (linear or X-Y). Similarly, distinct optical filters for each wavelength can be employed in combination with a multiplicity of detectors. Optical filters which are transmissive at the emission wavelength of one fluorophore and reflective at the emission wavelength of a second fluorophore can also be used to direct emitted light to separate detectors depending on wavelength. - The detectors used in the apparatus of the invention may be photomultipliers, photodiodes or a CCD. As noted above, the apparatus can be configured with one or more detectors for each detection site. The apparatus can also be configured such that one detector overlaps with several detection sites if the excitation light is directed to the detection sites one at a time. In addition, the apparatus can use a single detector (or a small array of detectors) which is scanned across the gel during detection.
- For determining the sequence of a selected region of DNA using the method of the invention, a kit may be formulated. Such a kit comprises, in packaged combination, a plurality of containers, each containing a reagent for the sequencing of the selected region of DNA. The reagent in each container has a reactive portion, which is involved in the sequencing reaction, and a fluorescent label portion. The label portions of the reagents in each container are different and distinguishable one from the other on the basis of the excitation or emission spectra thereof.
- In a preferred embodiment, a kit in accordance with the invention comprises a plurality of primers for sequencing the selected region, each of the primers having a different and distinguishable fluorescent label. Thus, the reactive portions of the reagents in this case are the oligonucleotide primer to which the labels are attached. The reactive portions may be different from one another, but are preferably the same. Such a kit may also include additional reagents for sequencing, including polymerase enzymes, dideoxynucleosides and buffers.
- Alternatively, the kit may contain one primer for the selected region and a plurality of containers of chain-terminating nucleosides, each labeled with a different and distinguishable fluorescent label. In this case, the reactive portion of the reagent is the chain terminating nucleoside which can be incorporated in place of a normal nucleoside during the sequencing reaction. The kit may include reagents having just one type of chain-terminating nucleoside, for example ddA with a plurality of distinct fluorescent labels, or it may include reagents having two or more types of chain-terminating nucleosides, each with a plurality of distinct labels. Such a kit may also include additional reagents for sequencing, including polymerase enzymes and buffers, as well as additional chain-terminating nucleosides (single-labeled) for those not provided as part of a multi-label reagent set.
- For practising the method shown in FIG. 1B, a suitable kit in accordance with the invention includes at least one container containing a mixture of a plurality of sequencing primers, one for each gene region to be evaluated. The plurality of sequencing primers each comprise a reactive portion which hybridizes with DNA in the sample and a label portion, the label portions of the reagents being different and distinguishable one from the other. Preferably, the detectable labels are fluorescent tags, distinguishable one from the other by their emission or excitation spectra.
Claims (20)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/217,615 US20030003498A1 (en) | 1996-04-18 | 2002-08-12 | Method, apparatus and kits for sequencing of nucleic acids using multiple dyes |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/634,284 US6432634B1 (en) | 1996-04-18 | 1996-04-18 | Method, apparatus and kits for sequencing of nucleic acids using multiple dyes |
US09/213,834 US6825011B1 (en) | 1998-12-17 | 1998-12-17 | Methods for insertion of nucleic acids into circular vectors |
US10/217,615 US20030003498A1 (en) | 1996-04-18 | 2002-08-12 | Method, apparatus and kits for sequencing of nucleic acids using multiple dyes |
Related Parent Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/634,284 Continuation US6432634B1 (en) | 1996-04-18 | 1996-04-18 | Method, apparatus and kits for sequencing of nucleic acids using multiple dyes |
US09/213,834 Continuation US6825011B1 (en) | 1996-04-18 | 1998-12-17 | Methods for insertion of nucleic acids into circular vectors |
Publications (1)
Publication Number | Publication Date |
---|---|
US20030003498A1 true US20030003498A1 (en) | 2003-01-02 |
Family
ID=24543162
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/634,284 Expired - Lifetime US6432634B1 (en) | 1996-04-18 | 1996-04-18 | Method, apparatus and kits for sequencing of nucleic acids using multiple dyes |
US09/213,384 Expired - Fee Related US6440664B1 (en) | 1996-04-18 | 1998-12-09 | Apparatus for sequencing of nucleic acids using multiple dyes |
US10/217,615 Abandoned US20030003498A1 (en) | 1996-04-18 | 2002-08-12 | Method, apparatus and kits for sequencing of nucleic acids using multiple dyes |
Family Applications Before (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US08/634,284 Expired - Lifetime US6432634B1 (en) | 1996-04-18 | 1996-04-18 | Method, apparatus and kits for sequencing of nucleic acids using multiple dyes |
US09/213,384 Expired - Fee Related US6440664B1 (en) | 1996-04-18 | 1998-12-09 | Apparatus for sequencing of nucleic acids using multiple dyes |
Country Status (5)
Country | Link |
---|---|
US (3) | US6432634B1 (en) |
EP (1) | EP0895544A1 (en) |
AU (1) | AU2500197A (en) |
CA (1) | CA2251809A1 (en) |
WO (1) | WO1997040184A1 (en) |
Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20050014175A1 (en) * | 1999-06-28 | 2005-01-20 | California Institute Of Technology | Methods and apparatuses for analyzing polynucleotide sequences |
US20050032076A1 (en) * | 1998-05-01 | 2005-02-10 | Arizona Board Of Regents | Method of determining the nucleotide sequence of oligonucleotides and dna molecules |
US20050170367A1 (en) * | 2003-06-10 | 2005-08-04 | Quake Stephen R. | Fluorescently labeled nucleoside triphosphates and analogs thereof for sequencing nucleic acids |
US20050239085A1 (en) * | 2004-04-23 | 2005-10-27 | Buzby Philip R | Methods for nucleic acid sequence determination |
US20050260609A1 (en) * | 2004-05-24 | 2005-11-24 | Lapidus Stanley N | Methods and devices for sequencing nucleic acids |
US20060019276A1 (en) * | 2004-05-25 | 2006-01-26 | Timothy Harris | Methods and devices for nucleic acid sequence determination |
US20060019263A1 (en) * | 1999-06-28 | 2006-01-26 | Stephen Quake | Methods and apparatuses for analyzing polynucleotide sequences |
US20060024678A1 (en) * | 2004-07-28 | 2006-02-02 | Helicos Biosciences Corporation | Use of single-stranded nucleic acid binding proteins in sequencing |
US20060046258A1 (en) * | 2004-02-27 | 2006-03-02 | Lapidus Stanley N | Applications of single molecule sequencing |
US20060118754A1 (en) * | 2004-12-08 | 2006-06-08 | Lapen Daniel C | Stabilizing a polyelectrolyte multilayer |
US20060172408A1 (en) * | 2003-12-01 | 2006-08-03 | Quake Steven R | Device for immobilizing chemical and biochemical species and methods of using same |
US20060172313A1 (en) * | 2005-01-28 | 2006-08-03 | Buzby Philip R | Methods and compositions for improving fidelity in a nucleic acid synthesis reaction |
US20060172328A1 (en) * | 2005-01-05 | 2006-08-03 | Buzby Philip R | Methods and compositions for correcting misincorporation in a nucleic acid synthesis reaction |
US20060252077A1 (en) * | 2004-12-30 | 2006-11-09 | Helicos Biosciences Corporation | Stabilizing a nucleic acid for nucleic acid sequencing |
US20060263790A1 (en) * | 2005-05-20 | 2006-11-23 | Timothy Harris | Methods for improving fidelity in a nucleic acid synthesis reaction |
US20070117104A1 (en) * | 2005-11-22 | 2007-05-24 | Buzby Philip R | Nucleotide analogs |
US20070117103A1 (en) * | 2005-11-22 | 2007-05-24 | Buzby Philip R | Nucleotide analogs |
US20070117102A1 (en) * | 2005-11-22 | 2007-05-24 | Buzby Philip R | Nucleotide analogs |
US20070128610A1 (en) * | 2005-12-02 | 2007-06-07 | Buzby Philip R | Sample preparation method and apparatus for nucleic acid sequencing |
US20070128614A1 (en) * | 2005-12-06 | 2007-06-07 | Liu David R | Nucleotide analogs |
US20070211467A1 (en) * | 2006-03-08 | 2007-09-13 | Helicos Biosciences Corporation | Systems and methods for reducing detected intensity non-uniformity in a laser beam |
US20080309926A1 (en) * | 2006-03-08 | 2008-12-18 | Aaron Weber | Systems and methods for reducing detected intensity non uniformity in a laser beam |
US7666593B2 (en) | 2005-08-26 | 2010-02-23 | Helicos Biosciences Corporation | Single molecule sequencing of captured nucleic acids |
US7897345B2 (en) | 2003-11-12 | 2011-03-01 | Helicos Biosciences Corporation | Short cycle methods for sequencing polynucleotides |
US7981604B2 (en) | 2004-02-19 | 2011-07-19 | California Institute Of Technology | Methods and kits for analyzing polynucleotide sequences |
US20110183321A1 (en) * | 1998-05-01 | 2011-07-28 | Arizona Board Of Regents | Method of determining the nucleotide sequence of oligonucleotides and dna molecules |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6214555B1 (en) * | 1996-05-01 | 2001-04-10 | Visible Genetics Inc. | Method compositions and kit for detection |
US6914250B2 (en) | 1997-03-07 | 2005-07-05 | Clare Chemical Research, Inc. | Fluorometric detection using visible light |
EP1105537B1 (en) * | 1998-08-19 | 2005-11-16 | Bioventures, Inc. | Method for determining polynucleotide sequence variations |
US6168701B1 (en) * | 1999-04-30 | 2001-01-02 | The Perkins-Elmer Corporation | Methods and compositions for improving the loading of analytical instruments |
US7119345B2 (en) * | 2003-02-28 | 2006-10-10 | Applera Corporation | Excitation and emission filter |
DE19948260A1 (en) * | 1999-10-07 | 2001-04-12 | Europ Lab Molekularbiolog | Fluorescence multiplex sequencing |
GB0016473D0 (en) * | 2000-07-05 | 2000-08-23 | Amersham Pharm Biotech Uk Ltd | Sequencing method |
US6397150B1 (en) | 2000-07-27 | 2002-05-28 | Visible Genetics Inc. | Method and apparatus for sequencing of DNA using an internal calibrant |
WO2002061410A1 (en) * | 2000-09-01 | 2002-08-08 | Spectrumedix Corporation | System and method for temperature gradient capillary electrophoresis |
JP4643909B2 (en) | 2001-12-21 | 2011-03-02 | ザ ウェルカム トラスト リミテッド | gene |
US7303879B2 (en) | 2003-07-31 | 2007-12-04 | Applera Corporation | Determination of SNP allelic frequencies using temperature gradient electrophoresis |
WO2011026136A1 (en) * | 2009-08-31 | 2011-03-03 | Life Technologies Corporation | Low-volume sequencing system and method of use |
EP3709303A1 (en) | 2010-12-14 | 2020-09-16 | Life Technologies Corporation | Systems and methods for run-time sequencing run quality monitoring |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5171534A (en) | 1984-01-16 | 1992-12-15 | California Institute Of Technology | Automated DNA sequencing technique |
US5207880A (en) | 1984-03-29 | 1993-05-04 | The Board Of Regents Of The University Of Nebraska | DNA sequencing |
US5360523A (en) | 1984-03-29 | 1994-11-01 | Li-Cor, Inc. | DNA sequencing |
US4811218A (en) | 1986-06-02 | 1989-03-07 | Applied Biosystems, Inc. | Real time scanning electrophoresis apparatus for DNA sequencing |
US5242796A (en) * | 1986-07-02 | 1993-09-07 | E. I. Du Pont De Nemours And Company | Method, system and reagents for DNA sequencing |
JP2550106B2 (en) | 1987-10-30 | 1996-11-06 | 株式会社日立製作所 | Optical dispersion detection type electrophoretic device |
DE3841565C2 (en) | 1988-12-09 | 1998-07-09 | Europ Lab Molekularbiolog | Methods for sequencing nucleic acids |
US5062942A (en) | 1989-04-12 | 1991-11-05 | Hitachi, Ltd. | Fluorescence detection type electrophoresis apparatus |
US5307148A (en) | 1990-04-05 | 1994-04-26 | Hitachi, Ltd. | Fluorescence detection type electrophoresis apparatus |
US5427911A (en) * | 1990-05-01 | 1995-06-27 | Yale University | Coupled amplification and sequencing of DNA |
JP2814409B2 (en) | 1990-11-30 | 1998-10-22 | 日立ソフトウェアエンジニアリング 株式会社 | Multicolor electrophoresis pattern reader |
JP2873884B2 (en) | 1991-03-22 | 1999-03-24 | 日立ソフトウェアエンジニアリング 株式会社 | Multicolor electrophoresis pattern reader |
JP2815506B2 (en) | 1992-04-14 | 1998-10-27 | 株式会社日立製作所 | Light detection type electrophoresis device |
-
1996
- 1996-04-18 US US08/634,284 patent/US6432634B1/en not_active Expired - Lifetime
-
1997
- 1997-04-16 AU AU25001/97A patent/AU2500197A/en not_active Abandoned
- 1997-04-16 CA CA002251809A patent/CA2251809A1/en not_active Abandoned
- 1997-04-16 EP EP97916279A patent/EP0895544A1/en not_active Withdrawn
- 1997-04-16 WO PCT/CA1997/000251 patent/WO1997040184A1/en not_active Application Discontinuation
-
1998
- 1998-12-09 US US09/213,384 patent/US6440664B1/en not_active Expired - Fee Related
-
2002
- 2002-08-12 US US10/217,615 patent/US20030003498A1/en not_active Abandoned
Cited By (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9096898B2 (en) | 1998-05-01 | 2015-08-04 | Life Technologies Corporation | Method of determining the nucleotide sequence of oligonucleotides and DNA molecules |
US20110183321A1 (en) * | 1998-05-01 | 2011-07-28 | Arizona Board Of Regents | Method of determining the nucleotide sequence of oligonucleotides and dna molecules |
US9725764B2 (en) | 1998-05-01 | 2017-08-08 | Life Technologies Corporation | Method of determining the nucleotide sequence of oligonucleotides and DNA molecules |
US7645596B2 (en) | 1998-05-01 | 2010-01-12 | Arizona Board Of Regents | Method of determining the nucleotide sequence of oligonucleotides and DNA molecules |
US10214774B2 (en) | 1998-05-01 | 2019-02-26 | Life Technologies Corporation | Method of determining the nucleotide sequence of oligonucleotides and DNA molecules |
US10208341B2 (en) | 1998-05-01 | 2019-02-19 | Life Technologies Corporation | Method of determining the nucleotide sequence of oligonucleotides and DNA molecules |
US9957561B2 (en) | 1998-05-01 | 2018-05-01 | Life Technologies Corporation | Method of determining the nucleotide sequence of oligonucleotides and DNA molecules |
US9212393B2 (en) | 1998-05-01 | 2015-12-15 | Life Technologies Corporation | Method of determining the nucleotide sequence of oligonucleotides and DNA molecules |
US9458500B2 (en) | 1998-05-01 | 2016-10-04 | Life Technologies Corporation | Method of determining the nucleotide sequence of oligonucleotides and DNA molecules |
US20050032076A1 (en) * | 1998-05-01 | 2005-02-10 | Arizona Board Of Regents | Method of determining the nucleotide sequence of oligonucleotides and dna molecules |
US9540689B2 (en) | 1998-05-01 | 2017-01-10 | Life Technologies Corporation | Method of determining the nucleotide sequence of oligonucleotides and DNA molecules |
US20060019263A1 (en) * | 1999-06-28 | 2006-01-26 | Stephen Quake | Methods and apparatuses for analyzing polynucleotide sequences |
US20050014175A1 (en) * | 1999-06-28 | 2005-01-20 | California Institute Of Technology | Methods and apparatuses for analyzing polynucleotide sequences |
US20050147992A1 (en) * | 1999-06-28 | 2005-07-07 | California Institute Of Technology | Methods and apparatus for analyzing polynucleotide sequences |
US20050170367A1 (en) * | 2003-06-10 | 2005-08-04 | Quake Stephen R. | Fluorescently labeled nucleoside triphosphates and analogs thereof for sequencing nucleic acids |
US7897345B2 (en) | 2003-11-12 | 2011-03-01 | Helicos Biosciences Corporation | Short cycle methods for sequencing polynucleotides |
US9657344B2 (en) | 2003-11-12 | 2017-05-23 | Fluidigm Corporation | Short cycle methods for sequencing polynucleotides |
US9012144B2 (en) | 2003-11-12 | 2015-04-21 | Fluidigm Corporation | Short cycle methods for sequencing polynucleotides |
US20060172408A1 (en) * | 2003-12-01 | 2006-08-03 | Quake Steven R | Device for immobilizing chemical and biochemical species and methods of using same |
US7981604B2 (en) | 2004-02-19 | 2011-07-19 | California Institute Of Technology | Methods and kits for analyzing polynucleotide sequences |
US20060046258A1 (en) * | 2004-02-27 | 2006-03-02 | Lapidus Stanley N | Applications of single molecule sequencing |
US20050239085A1 (en) * | 2004-04-23 | 2005-10-27 | Buzby Philip R | Methods for nucleic acid sequence determination |
US20050260609A1 (en) * | 2004-05-24 | 2005-11-24 | Lapidus Stanley N | Methods and devices for sequencing nucleic acids |
US20060019276A1 (en) * | 2004-05-25 | 2006-01-26 | Timothy Harris | Methods and devices for nucleic acid sequence determination |
US20060024678A1 (en) * | 2004-07-28 | 2006-02-02 | Helicos Biosciences Corporation | Use of single-stranded nucleic acid binding proteins in sequencing |
US20060118754A1 (en) * | 2004-12-08 | 2006-06-08 | Lapen Daniel C | Stabilizing a polyelectrolyte multilayer |
US20060252077A1 (en) * | 2004-12-30 | 2006-11-09 | Helicos Biosciences Corporation | Stabilizing a nucleic acid for nucleic acid sequencing |
US20060172328A1 (en) * | 2005-01-05 | 2006-08-03 | Buzby Philip R | Methods and compositions for correcting misincorporation in a nucleic acid synthesis reaction |
US20060172313A1 (en) * | 2005-01-28 | 2006-08-03 | Buzby Philip R | Methods and compositions for improving fidelity in a nucleic acid synthesis reaction |
US20060263790A1 (en) * | 2005-05-20 | 2006-11-23 | Timothy Harris | Methods for improving fidelity in a nucleic acid synthesis reaction |
US9868978B2 (en) | 2005-08-26 | 2018-01-16 | Fluidigm Corporation | Single molecule sequencing of captured nucleic acids |
US7666593B2 (en) | 2005-08-26 | 2010-02-23 | Helicos Biosciences Corporation | Single molecule sequencing of captured nucleic acids |
US20070117104A1 (en) * | 2005-11-22 | 2007-05-24 | Buzby Philip R | Nucleotide analogs |
US20070117103A1 (en) * | 2005-11-22 | 2007-05-24 | Buzby Philip R | Nucleotide analogs |
US20070117102A1 (en) * | 2005-11-22 | 2007-05-24 | Buzby Philip R | Nucleotide analogs |
US20070128610A1 (en) * | 2005-12-02 | 2007-06-07 | Buzby Philip R | Sample preparation method and apparatus for nucleic acid sequencing |
US20070128614A1 (en) * | 2005-12-06 | 2007-06-07 | Liu David R | Nucleotide analogs |
US20070211467A1 (en) * | 2006-03-08 | 2007-09-13 | Helicos Biosciences Corporation | Systems and methods for reducing detected intensity non-uniformity in a laser beam |
US20080309926A1 (en) * | 2006-03-08 | 2008-12-18 | Aaron Weber | Systems and methods for reducing detected intensity non uniformity in a laser beam |
Also Published As
Publication number | Publication date |
---|---|
AU2500197A (en) | 1997-11-12 |
US6432634B1 (en) | 2002-08-13 |
US6440664B1 (en) | 2002-08-27 |
CA2251809A1 (en) | 1997-10-30 |
WO1997040184A1 (en) | 1997-10-30 |
EP0895544A1 (en) | 1999-02-10 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US6432634B1 (en) | Method, apparatus and kits for sequencing of nucleic acids using multiple dyes | |
US5307148A (en) | Fluorescence detection type electrophoresis apparatus | |
EP0630972B1 (en) | DNA analyzing method | |
JP3287361B2 (en) | Multi-component analysis method including determination of statistical confidence intervals | |
EP0823052B1 (en) | A multicapillary fluorescent detection system | |
JP3400650B2 (en) | Electrophoretic separation detection method and apparatus | |
JP2000106900A (en) | Analysis of mixed dna fragments | |
JP3097205B2 (en) | Electrophoretic separation detection method | |
US6436641B1 (en) | Method and apparatus for DNA sequencing | |
CN1077140C (en) | Fractionation method for nucleotide fragments | |
JP2628571B2 (en) | Oligonucleotide analyzer | |
EP0542883B1 (en) | Method for determining dna sequences | |
JP2826366B2 (en) | Fluorescence detection type electrophoresis device | |
US6333156B1 (en) | Method for detecting oligonucleotides and determining base sequence of nucleic acids | |
JP2002085097A (en) | Method for determination of dna base sequence | |
JP3951309B2 (en) | DNA analysis method | |
JP3264276B2 (en) | Method for detecting nucleic acid fragment molecular weight separation pattern | |
JPH09512102A (en) | Method and apparatus for electrophoretic analysis | |
JP3255169B2 (en) | Electrophoretic separation detection method | |
Staub et al. | Real Time Paternity Testing Utilizing a Novel 11-System STR Multiplex Analyzed on an ABI Prism 377 DNA Sequencer | |
JP2001008692A (en) | Nucleic acid fragment specimen and single strand dna oligomer |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: VISIBLE GENETICS INC., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DIGBY, THOMAS J.;IZMAILOV, ALEXANDRE;REEL/FRAME:013195/0126;SIGNING DATES FROM 19960522 TO 19960617 |
|
AS | Assignment |
Owner name: BAYER HEALTHCARE LLC, NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VISIBLE GENETICS, INC.;REEL/FRAME:014499/0677 Effective date: 20030401 Owner name: BAYER HEALTHCARE LLC,NEW YORK Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:VISIBLE GENETICS, INC.;REEL/FRAME:014499/0677 Effective date: 20030401 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |