Sin3a-Tet1 interaction activates gene transcription and is required for embryonic stem cell pluripotency.

Sin3a-Tet1 interaction activates gene transcription and is required for embryonic stem cell pluripotency.
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Sin3a-Tet1 相互作用激活基因转录,是胚胎干细胞多能性所必需的

DOI:
10.1093/nar/gky347
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发表时间:
2018-07-06
影响因子:
14.9
通讯作者:
Kang J
Kang J
中科院分区:
生物学2区
文献类型:
--
作者:
Zhu F;Zhu Q;Ye D;Zhang Q;Yang Y;Guo X;Liu Z;Jiapaer Z;Wan X;Wang G;Chen W;Zhu S;Jiang C;Shi W;Kang J

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Sin 3a是组蛋白去乙酰化活性相关转录抑制因子复合体的核心成分,在早期胚胎发育中发挥重要作用。在这里,我们报道了Sin 3a的下调导致胚胎干细胞(ESC)自我更新的丧失和向中内胚层谱系的偏斜分化。我们发现Sin 3a是Nodal关键拮抗剂Lefty 1的转录共激活因子,通过与Tet 1相互作用使Lefty 1启动子去甲基化。进一步的研究表明,Sin 3a的PAH 1结构域中的两个氨基酸残基(Phe 147,Phe 182)是Sin 3a与Tet 1相互作用及其调节多能性活性所必需的。此外,对Sin 3a、Tet 1和Pol II ChIP-seq以及5 mC MeDIP-seq的全基因组分析显示,Sin 3a与Tet 1一起作用,以促进一组共同靶基因的转录。这些结果将Sin 3a与转录激活中的表观遗传DNA修饰联系起来,并对理解Sin 3a在小鼠ESCs中的多功能机制具有意义。
Sin3a is a core component of histone-deacetylation-activity-associated transcriptional repressor complex, playing important roles in early embryo development. Here, we reported that down-regulation of Sin3a led to the loss of embryonic stem cell (ESC) self-renewal and skewed differentiation into mesendoderm lineage. We found that Sin3a functioned as a transcriptional coactivator of the critical Nodal antagonist Lefty1 through interacting with Tet1 to de-methylate the Lefty1 promoter. Further studies showed that two amino acid residues (Phe147, Phe182) in the PAH1 domain of Sin3a are essential for Sin3a–Tet1 interaction and its activity in regulating pluripotency. Furthermore, genome-wide analyses of Sin3a, Tet1 and Pol II ChIP-seq and of 5mC MeDIP-seq revealed that Sin3a acted with Tet1 to facilitate the transcription of a set of their co-target genes. These results link Sin3a to epigenetic DNA modifications in transcriptional activation and have implications for understanding mechanisms underlying versatile functions of Sin3a in mouse ESCs.
DOI: 10.1016/j.stem.2011.07.010
发表时间: 2011-08-05
期刊: CELL STEM CELL
影响因子: 23.9
作者:
Dawlaty, Meelad M.;Ganz, Kibibi;Powell, Benjamin E.;Hu, Yueh-Chiang;Markoulaki, Styliani;Cheng, Albert W.;Gao, Qing;Kim, Jongpil;Choi, Sang-Woon;Page, David C.;Jaenisch, Rudolf
通讯作者: Jaenisch, Rudolf
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DOI: 10.1093/nar/gkl537
发表时间: 2006
影响因子: 14.9
作者:
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通讯作者: Stunnenberg, Hendrik G.
DOI: 10.1093/nar/gkq223
发表时间: 2010-06
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发表时间: 1999-06-01
影响因子: 7.5
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DOI: 10.1089/scd.2013.0220
发表时间: 2014-03-01
影响因子: 4
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通讯作者: Park, Kyung-Soon