Direct sensing of 5-methylcytosine by polymerase chain reaction.

Direct sensing of 5-methylcytosine by polymerase chain reaction.
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DOI:
10.1002/anie.201403745
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发表时间:
2014-07-28
影响因子:
16.6
通讯作者:
Marx, Andreas
Marx, Andreas
中科院分区:
化学1区
文献类型:
--
作者:
Aschenbrenner, Joos;Drum, Matthias;Topal, Huesnue;Wieland, Markus;Marx, Andreas

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The epigenetic control of genes by the methylation of cytosine resulting in 5-methylcytosine (5mC) has fundamental implications for human development and disease. Analysis of alterations in DNA methylation patterns is an emerging tool for cancer diagnostics and prognostics. Here we report that two thermostable DNA polymerases, namely the DNA polymerase KlenTaq derived from Thermus aquaticus and the KOD DNA polymerase from Thermococcus kodakaraensis, are able to extend 3′-mismatched primer strands more efficiently from 5 mC than from unmethylated C. This feature was advanced by generating a DNA polymerase mutant with further improved 5mC/C discrimination properties and its successful application in a novel methylation-specific PCR approach directly from untreated human genomic DNA.
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