Triplex-mediated analysis of cytosine methylation at CpA sites in DNA.

Triplex-mediated analysis of cytosine methylation at CpA sites in DNA.
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DOI:
10.1039/c3cc45917a
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发表时间:
2014-01
影响因子:
4.9
通讯作者:
Marie W Johannsen;S. Gerrard;Tracy Melvin;Tom Brown-
Marie W Johannsen;S. Gerrard;Tracy Melvin;Tom Brown-
中科院分区:
化学2区
文献类型:
--
作者:
Marie W Johannsen;S. Gerrard;Tracy Melvin;Tom Brown-

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修饰的三链形成寡核苷酸通过三链熔融温度的差异来区分DNA双链中的5-甲基胞嘧啶和未甲基化的胞嘧啶。这种区分是序列特异性的;CPA甲基化在稳定性方面有显著差异,而CpG甲基化没有检测到。这种直接检测DNA甲基化的方法构成了表观遗传学分析的一种新方法。
Modified triplex-forming oligonucleotides distinguish 5-methyl cytosine from unmethylated cytosine in DNA duplexes by differences in triplex melting temperatures. The discrimination is sequence-specific; dramatic differences in stabilisation are seen for CpA methylation, whereas CpG methylation is not detected. This direct detection of DNA methylation constitutes a new approach for epigenetic analysis.