Nucleic acid sequencing using microsphere arrays
First Claim
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1. A method of sequencing a plurality of target nucleic acids each comprising a first domain and a adjacent second domain, said second domain comprising a plurality of target positions, said method comprising:
- a) providing a plurality of hybridization complexes each comprising a target sequence and a sequencing primer that hybridizes to the first domain of said target sequence, said hybridization complexes attached to a surface of a substrate;
b) extending each of said primers by the addition of a first nucleotide to the first detection position using a first enzyme to form an extended primer; and
c) detecting the release of pyrophosphate (PPi) to determine the type of said first nucleotide added onto said primers.
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Abstract
The invention relates to DNA sequencing by synthesis techniques, including those utilizing the detection of pyrophosphate (PPi) generated during the DNA synthesis reaction (pyrosequencing). The methods and compositions utilize biosensor arrays comprising microspheres distributed on a surface.
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Citations
21 Claims
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1. A method of sequencing a plurality of target nucleic acids each comprising a first domain and a adjacent second domain, said second domain comprising a plurality of target positions, said method comprising:
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a) providing a plurality of hybridization complexes each comprising a target sequence and a sequencing primer that hybridizes to the first domain of said target sequence, said hybridization complexes attached to a surface of a substrate;
b) extending each of said primers by the addition of a first nucleotide to the first detection position using a first enzyme to form an extended primer; and
c) detecting the release of pyrophosphate (PPi) to determine the type of said first nucleotide added onto said primers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of sequencing a target nucleic acid comprising a first domain and an adjacent second domain, said second domain comprising a plurality of target positions, said method comprising:
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a) providing a hybridization complex comprising said target sequence and a capture probe covalently attached to a microsphere on a surface of a substrate; and
b) determining the identity of a plurality of bases at said target positions. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. A kit for nucleic acid sequencing comprising:
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a) a composition comprising;
i) a substrate with a surface comprising discrete sites; and
ii) a population of microspheres distributed on said sites;
wherein said microspheres comprise capture probes;
b) an extension enzyme; and
c) dNTPs. - View Dependent Claims (19, 20, 21)
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Specification