Effects of Tet-induced oxidation products of 5-methylcytosine on Dnmt1- and DNMT3a-mediated cytosine methylation.

Effects of Tet-induced oxidation products of 5-methylcytosine on Dnmt1- and DNMT3a-mediated cytosine methylation.
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DOI:
10.1039/c4mb00150h
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发表时间:
2014-07
影响因子:
--
通讯作者:
Wang Y
Wang Y
中科院分区:
生物3区
文献类型:
--
作者:
Ji D;Lin K;Song J;Wang Y

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我们系统地研究了Tet-induced氧化产物5-甲基胞嘧啶(5 mC)对合成双链DNA中Dnmt 1和DNMT 3a介导的胞嘧啶甲基化的影响。我们发现,在CpG位点上的5 mC被5-羟甲基胞嘧啶、5-甲酰基胞嘧啶、5-羧基胞嘧啶或5-羟甲基尿嘧啶取代,导致相对和相邻CpG位点上胞嘧啶的甲基化改变。我们的研究结果提供了重要的新知识的影响5-甲基胞嘧啶氧化产物在维持胞嘧啶甲基化。
We investigated systematically the effects of Tet-induced oxidation products of 5-methylcytosine (5mC) on Dnmt1- and DNMT3a-mediated cytosine methylation in synthetic duplex DNA. We found that the replacement of 5mC at CpG site with a 5-hydroxymethylcytosine, 5-formylcytosine, 5-carboxylcytosine or 5-hydroxymethyluracil resulted in altered methylation of cytosine at both the opposite and the neighboring CpG sites. Our results provided important new knowledge about the implications of the 5-methylcytosine oxidation products in maintenance cytosine methylation.
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