Tet-mediated formation of 5-carboxylcytosine and its excision by TDG in mammalian DNA.
Tet-mediated formation of 5-carboxylcytosine and its excision by TDG in mammalian DNA.
复制标题
哺乳动物 DNA 中 Tet 介导的 5-羧基胞嘧啶的形成及其 TDG 的切除
DOI:
10.1126/science.1210944
复制
发表时间:
2011-09-02
期刊:
影响因子:
--
通讯作者:
Xu GL
中科院分区:
文献类型:
--
作者:
He YF;Li BZ;Li Z;Liu P;Wang Y;Tang Q;Ding J;Jia Y;Chen Z;Li L;Sun Y;Li X;Dai Q;Song CX;Zhang K;He C;Xu GL
Evidence for a possible route for DNA demethylation in animals is suggested. The prevalent DNA modification in higher organisms is the methylation of cytosine to 5-methylcytosine (5mC), which is partially converted to 5-hydroxymethylcytosine (5hmC) by the Tet (ten eleven translocation) family of dioxygenases. Despite their importance in epigenetic regulation, it is unclear how these cytosine modifications are reversed. Here, we demonstrate that 5mC and 5hmC in DNA are oxidized to 5-carboxylcytosine (5caC) by Tet dioxygenases in vitro and in cultured cells. 5caC is specifically recognized and excised by thymine-DNA glycosylase (TDG). Depletion of TDG in mouse embyronic stem cells leads to accumulation of 5caC to a readily detectable level. These data suggest that oxidation of 5mC by Tet proteins followed by TDG-mediated base excision of 5caC constitutes a pathway for active DNA demethylation.
登录
查看更多内容
影响因子:
3.7
作者:
Globisch D;Münzel M;Müller M;Michalakis S;Wagner M;Koch S;Brückl T;Biel M;Carell T
通讯作者:
Carell T
影响因子:
4.8
作者:
Boorstein, RJ;Cummings, A;Teebor, GW
通讯作者:
Teebor, GW
影响因子:
16
作者:
Xu Y;Wu F;Tan L;Kong L;Xiong L;Deng J;Barbera AJ;Zheng L;Zhang H;Huang S;Min J;Nicholson T;Chen T;Xu G;Shi Y;Zhang K;Shi YG
通讯作者:
Shi YG
DOI:
10.1126/science.1170116
发表时间:
2009-05-15
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Tahiliani M;Koh KP;Shen Y;Pastor WA;Bandukwala H;Brudno Y;Agarwal S;Iyer LM;Liu DR;Aravind L;Rao A
通讯作者:
Rao A
影响因子:
10.5
作者:
Wu, Hao;D'Alessio, Ana C.;Zhang, Yi
通讯作者:
Zhang, Yi