METHOD FOR SYNTHESIS OF DOUBLE-STRANDED DNA CORRESPONDING TO RNA, AND METHOD FOR AMPLIFICATION OF THE DNA
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United States of America Patent
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Issued Date -
Mar 8, 2012
app pub date -
May 11, 2010
filing date -
May 14, 2009
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Abandoned
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Abstract
An object of the present invention is to provide an inexpensive and simple method for synthesis of a double-stranded DNA corresponding to a particular RNA, and a method for amplification of the aforementioned double-stranded DNA. The present invention relates to a method for synthesis of a double-stranded DNA having a nucleotide sequence corresponding to template RNA having polyA, comprising step 1 in which reverse transcription reaction of template RNA is carried out employing oligo(dT)primer to which DNA fragment having a known sequence has been added at the 5′-terminal, to obtain a single-stranded DNA, and step 2 in which double strand formation reaction of single-stranded DNA obtained in step 1 is carried out employing a random primer to which DNA fragment having a known sequence has been added at the 5′-terminal, in the presence of polymerase which does not have 3′→5′ exonuclease activity nor strand displacement activity, to obtain a double-stranded DNA, as well as a method for amplification of a double-stranded DNA having a nucleotide sequence corresponding to template RNA having polyA, further comprising step 3 in which PCR reaction is carried out using the obtained double-stranded DNA.
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