Abstract：
:How ubiquitous transcription factors (TFs) coordinate temporal inputs from broadly expressed epigenetic factors to control cell fate remains poorly understood. Here, we uncover a molecular relationship between p53, an abundant embryonic TF, and WDR5, an essential member of the MLL chromatin modifying complex, that regulates mouse embryonic stem cell fate. Wild-type Wdr5 or transient Wdr5 knockout promotes a distinct pattern of global chromatin accessibility and spurs neuroectodermal differentiation through an RbBP5-dependent process in which WDR5 binds to, and activates transcription of, neural genes. Wdr5 rescue after its prolonged inhibition targets WDR5 to mesoderm lineage-specifying genes, stimulating differentiation toward mesoderm fates in a p53-dependent fashion. Finally, we identify a direct interaction between WDR5 and p53 that enables their co-recruitment to, and regulation of, genes known to control cell proliferation and fate. Our results unmask p53-dependent mechanisms that temporally integrate epigenetic WDR5 inputs to drive neuroectoderm and mesoderm differentiation from pluripotent cells.
journal_name
Cell Repjournal_title
Cell reportsauthors
Li Q,Mao F,Zhou B,Huang Y,Zou Z,denDekker AD,Xu J,Hou S,Liu J,Dou Y,Rao RCdoi
10.1016/j.celrep.2019.12.039subject
Has Abstractpub_date
2020-01-14 00:00:00pages
465-480.e6issue
2issn
2211-1247pii
S2211-1247(19)31696-1journal_volume
30pub_type
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