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Maternal factor NELFA drives a 2C-like state in mouse embryonic stem cells.
Nature Cell Biology ( IF 20.042 ) Pub Date : 2020-01-13 , DOI: 10.1038/s41556-019-0453-8
Zhenhua Hu,Dennis Eng Kiat Tan,Gloryn Chia,Haihan Tan,Hwei Fen Leong,Benjamin Jieming Chen,Mei Sheng Lau,Kelly Yu Sing Tan,Xuezhi Bi,Dongxiao Yang,Ying Swan Ho,Baojiang Wu,Siqin Bao,Esther Sook Miin Wong,Wee-Wei Tee

Mouse embryonic stem cells (ESCs) sporadically transit into an early embryonic-like state characterized by the expression of 2-cell (2C) stage-restricted transcripts. Here, we identify a maternal factor-negative elongation factor A (NELFA)-whose heterogeneous expression in mouse ESCs is coupled to 2C gene upregulation and expanded developmental potential in vivo. We show that NELFA partners with Top2a in an interaction specific to the 2C-like state, and that it drives the expression of Dux-a key 2C regulator. Accordingly, loss of NELFA and/or Top2a suppressed Dux activation. Further characterization of 2C-like cells uncovered reduced glycolytic activity; remarkably, mere chemical suppression of glycolysis was sufficient to promote a 2C-like fate, obviating the need for genetic manipulation. Global chromatin state analysis on NELFA-induced cells revealed decommissioning of ESC-specific enhancers, suggesting ESC-state impediments to 2C reversion. Our study positions NELFA as one of the earliest drivers of the 2C-like state and illuminates factors and processes that govern this transition.
更新日期:2020-01-13

 

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