Electron induced fluorescent method for nucleic acid sequencing
First Claim
1. A method of sequencing a target nucleic acid comprising:
- obtaining the target nucleic acid;
hybridizing the nucleic acid to a probe library comprised of at least 256 distinguishably labeled different probe,wherein the probes are labeled with conductive polymers,wherein the conductive polymers are selected from the group consisting of polyaniline, polyphenylene-vinylene, polythiophene, polypyrrole, polyacetylene, polydiacetylene, polytriacetylene, poly-p-phenylene, polyfuran, betacarotene, a substituted polyaniline, a substituted polyphenylene-vinylene, a substituted polythiophene, a substituted polypyrrole, a substituted polyacetylene, a substituted polydiacetylene, a substituted polytriacetylene, a substituted poly-p-phenylene, a substituted polyfuran, a substituted betacarotene and a conjugated oligomer, andwherein the substitution is an alkoxy side chain, an alkyl side chain or an aryl side chain;
separating the hybridized nucleic acid from unhybridized probes; and
detecting the order of hybridized probes along the nucleic acid.
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Abstract
An apparatus, compositions and related methods for sequencing a target nucleic acid are described. In certain embodiments, the apparatus is a microfluidic apparatus comprising an input chamber, microchannel, output chamber and a detection unit that is operatively connected to the microchannel. In preferred embodiments, the methods include hybridizing a target nucleic acid to one or more probe libraries, moving the hybridized target nucleic acid past the detector, and detecting bound probes. Probe libraries may comprise oligonucleotides or oligonucleotide analogs, preferably with each probe uniquely labeled. A linear order of labeled probes hybridized to the target nucleic acid can be detected and the target nucleic acid sequence deduced. In preferred embodiments, probe labels are detected by analysis of electron-induced fluorescence of probes labeled with conductive polymers.
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Citations
25 Claims
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1. A method of sequencing a target nucleic acid comprising:
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obtaining the target nucleic acid; hybridizing the nucleic acid to a probe library comprised of at least 256 distinguishably labeled different probe, wherein the probes are labeled with conductive polymers, wherein the conductive polymers are selected from the group consisting of polyaniline, polyphenylene-vinylene, polythiophene, polypyrrole, polyacetylene, polydiacetylene, polytriacetylene, poly-p-phenylene, polyfuran, betacarotene, a substituted polyaniline, a substituted polyphenylene-vinylene, a substituted polythiophene, a substituted polypyrrole, a substituted polyacetylene, a substituted polydiacetylene, a substituted polytriacetylene, a substituted poly-p-phenylene, a substituted polyfuran, a substituted betacarotene and a conjugated oligomer, and wherein the substitution is an alkoxy side chain, an alkyl side chain or an aryl side chain; separating the hybridized nucleic acid from unhybridized probes; and detecting the order of hybridized probes along the nucleic acid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of sequencing a target nucleic acid comprising;
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hybridizing the target nucleic acid to a probe library comprised of at least 256 different probes, each different probe distinguishably labeled with a conductive polymer; separating the hybridized nucleic acid from unhybridized probes; exciting the hybridized probes with an electron beam, wherein the excited probes of different sequence emit distinguishable fluorescent signals; detecting an order of the hybridized probes along the nucleic acid; and determining the target nucleic acid sequence from the order of the hybridized probes. - View Dependent Claims (12, 13, 14)
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15. A method of sequencing a target nucleic acid comprising:
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hybridizing the target nucleic acid to a probe library comprised of at least 256 different probes, each different probe distinguishably labeled with a conductive polymer; ligating hybridized probes together; separating the hybridized nucleic acid from unhybridized probes; exciting the hybridized probes with an electron beam; detecting an order of the hybridized probes along the nucleic acid; and determining a target nucleic acid sequence from the order of the hybridized probes.
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16. A method comprising:
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hybridizing a target nucleic acid to a probe library comprised of at least 256 distinguishably labeled different probe; moving the hybridized nucleic acid past a detection unit; exciting the hybridized probes with one or more of an electron beam and an electromagnetic radiation; and after said exciting the hybridized probes, detecting individual hybridized probes in sequential order as the individual hybridized probes of the hybridized nucleic acid move past the detection unit by detecting signals emitted by the excited hybridized probes. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification