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Methods for selecting and amplifying polynucleotides

  • US 8,999,642 B2
  • Filed: 08/25/2009
  • Issued: 04/07/2015
  • Est. Priority Date: 03/10/2008
  • Status: Active Grant
First Claim
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1. A method of selecting and amplifying polynucleotides on a solid support, comprising:

  • a) providing a plurality of amplification oligonucleotides immobilized on a solid support;

    b) hybridizing a population of oligonucleotide probes to a subset of said amplification oligonucleotides, each of said oligonucleotide probes comprising a first portion which is complementary to the amplification oligonucleotides and a second portion which comprises sequence from a selected region of a template polynucleotide;

    c) performing an extension reaction to extend hybridised amplification oligonucleotides to produce a population of support-bound capture oligonucleotides and a population of unextended amplification oligonucleotides, each capture oligonucleotide in said population comprising a sequence that is complementary to a selected region of a template polynucleotide;

    d) applying a population of template polynucleotides to the solid support under conditions such that the template polynucleotides selectively hybridise to the support-bound capture oligonucleotides;

    e) extending the support-bound capture oligonucleotides that are hybridized to the template polynucleotides, thereby generating extension products, the extension products having a complementary to the template polynucleotides and a portion complementary to the unextended amplification oligonucleotides; and

    f) amplifying the extension products, wherein the amplifying comprises annealing one or more of the unextended amplification oligonucleotides to one or more of the extension products, thereby producing a solid-phase amplification product.

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