Histone-fold domain protein NF-Y promotes chromatin accessibility for cell type-specific master transcription factors.
Histone-fold domain protein NF-Y promotes chromatin accessibility for cell type-specific master transcription factors.
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DOI:
10.1016/j.molcel.2014.07.005
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发表时间:
2014-09-04
期刊:
影响因子:
16
通讯作者:
Jothi, Raja
中科院分区:
文献类型:
--
作者:
Oldfield, Andrew J.;Yang, Pengyi;Conway, Amanda E.;Cinghu, Senthilkumar;Freudenberg, Johannes M.;Yellaboina, Sailu;Jothi, Raja
Cell type-specific master transcription factors (TFs) play vital roles in defining cell identity and function. However, the roles ubiquitous factors play in the specification of cell identity remain underappreciated. Here we show that the ubiquitous CCAAT-binding NF-Y complex is required for the maintenance of embryonic stem cell (ESC) identity and is an essential component of the core pluripotency network. Genome-wide studies in ESCs and neurons reveal that not only does NF-Y regulate genes with housekeeping functions through cell type-invariant promoter-proximal binding, but also genes required for cell identity by binding to cell type-specific enhancers with master TFs. Mechanistically, NF-Y’s distinct DNA-binding mode promotes master/pioneer TF binding at enhancers by facilitating a permissive chromatin conformation. Our studies unearth a conceptually unique function for histone-fold domain (HFD) protein NF-Y in promoting chromatin accessibility and suggest that other HFD proteins with analogous structural and DNA-binding properties may function in similar ways.
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