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Enzymatic synthesis of oligonucleotides using digestible templates

  • US 5,932,450 A
  • Filed: 06/07/1995
  • Issued: 08/03/1999
  • Est. Priority Date: 06/07/1995
  • Status: Expired due to Fees
First Claim
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1. A method of synthesizing two or more oligonucleotides comprising the steps of:

  • (a) providing a nucleic acid template comprising a primer binding region and an oligonucleotide complementary region located 5'"'"' to said primer binding region, said primer binding region being complementary to a nucleic acid primer and said oligonucleotide complementary region comprising two or more subregions, each said subregion being complementary to an oligonucleotide to be synthesized, wherein said template is used to direct the synthesis of a primer extension product comprising;

    an oligonucleotide product comprising said oligonucleotides and one or more cleavage sites, each said cleavage site separating a pair of said oligonucleotides positioned adjacent to one another on said oligonucleotide product;

    a nucleic acid primer; and

    a cleavage site separating said primer from said oligonucleotide product;

    (b) contacting said template with said primer under conditions such that said primer is able to hybridize to the primer binding region of said template to form a template-primer hybrid;

    (c) incubating said template-primer hybrid in the presence of at least one DNA polymerase under conditions such that DNA synthesis occurs to form said primer extension product;

    (d) cleaving said primer extension product such that said primer is separated from said oligonucleotide product and the oligonucleotides of said oligonucleotide product are separated from each other; and

    (e) digesting said template before, simultaneous with or subsequent to step (d), so that said template is separated from said primer extension product.

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