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Use of RNA/DNA chimeric primers for improved nucleic acid amplification reactions

  • US 8,460,874 B2
  • Filed: 07/03/2008
  • Issued: 06/11/2013
  • Est. Priority Date: 07/03/2007
  • Status: Active Grant
First Claim
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1. A method of reducing or eliminating formation of artifacts and non-specific amplification products in a DNA-dependent DNA polymerase amplification reaction, the method comprising:

  • conducting a nucleic acid amplification reaction using at least one RNA/DNA chimeric oligonucleotide as a forward or as a reverse primer or as a probe, and using a DNA-dependent DNA polymerase;

    wherein the chimeric oligonucleotide comprises at least one ribonucleotide located within 10 nucleotides adjacent to the 3′

    end of the chimeric oligonucleotide;

    wherein the at least one ribonucleotide impedes DNA synthesis from primer-primer dimers or primer-probe dimers; and

    wherein no two ribonucleotides in the chimeric oligonucleotide are adjacent to one another.

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