The histone acetyltransferase MOF is a key regulator of the embryonic stem cell core transcriptional network.

The histone acetyltransferase MOF is a key regulator of the embryonic stem cell core transcriptional network.
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DOI:
10.1016/j.stem.2012.04.023
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发表时间:
2012-08-03
期刊:
影响因子:
23.9
通讯作者:
Dou, Yali
Dou, Yali
中科院分区:
医学1区
文献类型:
--
作者:
Li, Xiangzhi;Li, Li;Pandey, Ruchi;Byun, Jung S.;Gardner, Kevin;Qin, Zhaohui;Dou, Yali

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多能胚胎干细胞(ESC)保持自我更新和对分化线索快速反应的潜力。 ESC 的两种特征均受到表观遗传调控。在这里,我们证明组蛋白乙酰转移酶 Mof 在维持 ESC 自我更新和多能性方面发挥着重要作用。 Mof 缺失的 ESC 失去特征形态、碱性磷酸酶 (AP) 染色和分化潜力。它们还具有核心转录因子 Nanog、Oct4 和 Sox2 的异常表达。重要的是,Mof 缺失 ESC 的表型可以被 Nanog 过表达部分抑制,这支持了 Mof 在 ESC 中作为 Nanog 上游调节因子的功能。全基因组 ChIP 测序和转录组分析进一步证明,Mof 是 ESC 核心转录网络的组成部分,并且 Mof 是多种发育程序的启动基因。 Mof 也是关键调控位点的 Wdr5 招募和 H3 K4 甲基化所必需的,这凸显了 ESC 中各种染色质调控因子的复杂性和互连性。
Pluripotent embryonic stem cells (ESCs) maintain self-renewal and the potential for rapid response to differentiation cues. Both ESC features are subject to epigenetic regulation. Here we show that histone acetyltransferase Mof plays an essential role in the maintenance of ESC self-renewal and pluripotency. ESCs with Mof deletion lose characteristic morphology, alkaline phosphatase (AP) staining and differentiation potential. They also have aberrant expression of core transcription factors Nanog, Oct4 and Sox2. Importantly, the phenotypes of Mof null ESCs can be partially suppressed by Nanog overexpression, supporting that Mof functions as an upstream regulator of Nanog in ESCs. Genome-wide ChIP sequencing and transcriptome analyses further demonstrate that Mof is an integral component of ESC core transcription network and Mof primes genes for diverse developmental programs. Mof is also required for Wdr5 recruitment and H3 K4 methylation at key regulatory loci, highlighting complexity and interconnectivity of various chromatin regulators in ESCs.
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