Enhanced utilization of surface primers in clusters
First Claim
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1. A method of preparing immobilized templates for a nucleic acid sequencing reaction comprising:
- (a) providing a solid support having a plurality of forward and reverse amplification primers immobilized thereon, wherein a subset of said plurality of amplification primers comprises a cleavage site;
(b) amplifying a target nucleic acid template using the subset of amplification primers on the solid support to produce a plurality of double-stranded nucleic acid molecules, wherein both strands of each double-stranded nucleic acid molecule are attached to the solid support at their 5′
ends;
(c) cleaving the subset of amplification primers at the cleavage site to produce a linearized amplification product comprising a cleaved non-immobilized strand and a complementary immobilized strand; and
(d) subjecting the amplification product to partially-denaturing conditions to facilitate hybridization of a 3′
terminal portion of the cleaved non-immobilized strand with a complementary immobilized amplification primer, followed by extension of the immobilized amplification primer to generate an immobilized copy of the non-immobilized strand of the amplification product.
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Abstract
Presented herein are methods and compositions for enhancing utilization of surface primers during the surface amplification process. The methods are useful for surface amplification at improved densities. The methods and compositions provided herein enable creation of clusters which are brighter, but at the same densities as currently achieved using standard cluster amplification.
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Citations
15 Claims
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1. A method of preparing immobilized templates for a nucleic acid sequencing reaction comprising:
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(a) providing a solid support having a plurality of forward and reverse amplification primers immobilized thereon, wherein a subset of said plurality of amplification primers comprises a cleavage site; (b) amplifying a target nucleic acid template using the subset of amplification primers on the solid support to produce a plurality of double-stranded nucleic acid molecules, wherein both strands of each double-stranded nucleic acid molecule are attached to the solid support at their 5′
ends;(c) cleaving the subset of amplification primers at the cleavage site to produce a linearized amplification product comprising a cleaved non-immobilized strand and a complementary immobilized strand; and (d) subjecting the amplification product to partially-denaturing conditions to facilitate hybridization of a 3′
terminal portion of the cleaved non-immobilized strand with a complementary immobilized amplification primer, followed by extension of the immobilized amplification primer to generate an immobilized copy of the non-immobilized strand of the amplification product. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification