Nono, a Bivalent Domain Factor, Regulates Erk Signaling and Mouse Embryonic Stem Cell Pluripotency.
Nono, a Bivalent Domain Factor, Regulates Erk Signaling and Mouse Embryonic Stem Cell Pluripotency.
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DOI:
10.1016/j.celrep.2016.09.078
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发表时间:
2016-10-18
期刊:
影响因子:
8.8
通讯作者:
Shi Y
中科院分区:
文献类型:
--
作者:
Ma C;Karwacki-Neisius V;Tang H;Li W;Shi Z;Hu H;Xu W;Wang Z;Kong L;Lv R;Fan Z;Zhou W;Yang P;Wu F;Diao J;Tan L;Shi YG;Lan F;Shi Y
Nono is a component of the para-speckle, which stores and processes RNA. Mouse embryonic stem cells (mESCs) lack para-speckles, leaving the function of Nono in mESCs unclear. Here we find that Nono functions as a chromatin regulator cooperating with Erk to regulate mESC pluripotency. We report that Nono loss results in robust self-renewing mESCs with epigenomic and transcriptomic features resembling the 2i (GSK and Erk inhibitors)-induced “ground state”. Erk interacts with and is required for Nono localization to a subset of bivalent genes that have high levels of poised RNA polymerase. Nono loss compromises Erk activation and RNA polymerase poising at its target bivalent genes in undifferentiated mESCs; thus disrupting target gene activation and differentiation. These findings argue that Nono collaborates with Erk signaling to regulate the integrity of bivalent domains and mESC pluripotency.
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