| Literature DB >> 23260146 |
Zhaoyu Li1, Paul Gadue, Kaifu Chen, Yang Jiao, Geetu Tuteja, Jonathan Schug, Wei Li, Klaus H Kaestner.
Abstract
Nucleosome occupancy is fundamental for establishing chromatin architecture. However, little is known about the relationship between nucleosome dynamics and initial cell lineage specification. Here, we determine the mechanisms that control global nucleosome dynamics during embryonic stem (ES) cell differentiation into endoderm. Both nucleosome depletion and de novo occupation occur during the differentiation process, with higher overall nucleosome density after differentiation. The variant histone H2A.Z and the winged helix transcription factor Foxa2 both act to regulate nucleosome depletion and gene activation, thus promoting ES cell differentiation, whereas DNA methylation promotes nucleosome occupation and suppresses gene expression. Nucleosome depletion during ES cell differentiation is dependent on Nap1l1-coupled SWI/SNF and INO80 chromatin remodeling complexes. Thus, both epigenetic and genetic regulators cooperate to control nucleosome dynamics during ES cell fate decisions.Entities:
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Year: 2012 PMID： 23260146 PMCID： PMC3530164 DOI： 10.1016/j.cell.2012.11.018
Source DB: PubMed Journal: Cell ISSN： 0092-8674 Impact factor: 41.582