SEQUENCING METHOD, APPARATUS, SYSTEM AND APPLICATION THEREOF
First Claim
1. A single molecule sequencing method comprising:
- (i) combining a template nucleic acid having a first optical detection label at the end with a primer to obtain a first complex, wherein the primer being attached to a surface of a substrate;
(ii) imaging the first complex to obtain a first image;
(iii) mixing the first complex, polymerase, and one or more of nucleotides with a second optical detection label and thus adding the one or more of nucleotides with the second optical detection label to the first complex by polymerization reaction, thereby obtaining an extension product, wherein the nucleotides with the second optical detection label comprises a second optical detection label, a cleavable group and a nucleotide that are sequentially connected;
(iv) imaging the extension product to obtain a second image;
(v) removing the cleavable group from the extension product to obtain a second complex; and
(vi) replacing the first complex with the second complex; and
repeating the above steps (ii) to (v) once or more times to determine the template nucleic acid sequence.
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Abstract
A sequencing method comprising: (i) combining a template nucleic acid having a first optical detection label at the end with a primer to obtain a first complex; (ii) imaging the first complex to obtain a first image; (iii) mixing the first complex, polymerase, and one or more of nucleotides with a optical detection label to obtain an extension product by polymerization reaction; (iv) imaging the extension product to obtain a second image; (v) removing the cleavable group of the nucleotides with the optical detection label from the extension product to obtain a second complex; (vi) repeating the above steps (ii) to (v) once or more times to determine the template nucleic acid sequence. The sequencing method can achieve single molecule sequencing by capturing template nucleic acids through primers.
7 Citations
19 Claims
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1. A single molecule sequencing method comprising:
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(i) combining a template nucleic acid having a first optical detection label at the end with a primer to obtain a first complex, wherein the primer being attached to a surface of a substrate; (ii) imaging the first complex to obtain a first image; (iii) mixing the first complex, polymerase, and one or more of nucleotides with a second optical detection label and thus adding the one or more of nucleotides with the second optical detection label to the first complex by polymerization reaction, thereby obtaining an extension product, wherein the nucleotides with the second optical detection label comprises a second optical detection label, a cleavable group and a nucleotide that are sequentially connected; (iv) imaging the extension product to obtain a second image; (v) removing the cleavable group from the extension product to obtain a second complex; and (vi) replacing the first complex with the second complex; and
repeating the above steps (ii) to (v) once or more times to determine the template nucleic acid sequence. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A single molecule sequencing apparatus comprising:
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a combining module, for combining a template nucleic acid having a first optical detection label at the end with a primer to obtain a first complex, wherein the primer being attached to a surface of a substrate; a first imaging module, for imaging the first complex from the combining module to obtain a first image; a synthesizing module, for mixing the first complex from the combining module, polymerase, and one or more of nucleotides with a second optical detection label and thus adding the one or more of nucleotides with the second optical detection label to the first complex by polymerization reaction, thereby obtaining an extension product, wherein the nucleotides with the second optical detection label comprises a second optical detection label, a cleavable group and a nucleotide that are sequentially connected; a second imaging module, for imaging the extension product from the synthesizing module to obtain a second image; a cleaving module, for removing the cleavable group from the extension product from the synthesizing module to obtain a second complex; and an iterating module, for replacing the first complex from the combining module with the second complex from the cleaving module, and entering in turn the first imaging module, the synthesizing module, the second imaging module and the cleaving module one or more times to determine the template nucleic acid sequence. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification