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Method for pairwise sequencing of target polynucleotides

  • US 10,221,452 B2
  • Filed: 10/12/2015
  • Issued: 03/05/2019
  • Est. Priority Date: 10/06/2006
  • Status: Active Grant
First Claim
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1. A method for sequencing distal end regions A and B of a target double-stranded polynucleotide, wherein said distal end regions A and B are in the same target double-stranded polynucleotide, the method comprising:

  • (a) providing a solid support having immobilized thereon a plurality of double stranded template polynucleotides each formed from complementary first and second template strands linked to the solid support at their 5′

    ends;

    (b) treating the double stranded template polynucleotides such that each double stranded template polynucleotide is cut in at least two places to generate two shortened double stranded template fragments A and B immobilized at one end and non-immobilized at another end, wherein A and B are no longer directly connected;

    (c) treating the two shortened double stranded template fragments A and B immobilized at one end to make the non-immobilized ends of each of the two shortened double stranded template fragments A and B a blunt ended duplex, thereby forming a first blunt ended duplex having end A and a second blunt ended duplex having end B;

    (d) treating the first and second blunt ended duplexes such that the blunt ends A and B are connected to form a double stranded nucleotide sequence containing both ends A and B of the original target fragment in a shortened contiguous sequence, immobilized at both ends;

    (e) cleaving one strand of the double stranded nucleotide sequence containing both distal ends A and B of the original target fragment joined in a shortened contiguous sequence immobilized at both ends to generate a polynucleotide having a target sequence containing both distal ends A and B of the original target fragment in a shortened contiguous sequence, wherein said polynucleotide having the target sequence is immobilized at a single 5′

    or 3′

    end; and

    (f) carrying out a single sequencing reaction to determine a contiguous sequence of both ends A and B of the original target fragment.

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