RE1 Silencing transcription factor maintains a repressive chromatin environment in embryonic hippocampal neural stem cells.
The control of gene expression in neural stem cells is key to understanding their developmental and therapeutic potential, yet we know little of the transcriptional mechanisms that underlie their differentiation. Recent evidence has implicated the RE1 silencing transcription factor (REST) in neuronal differentiation. However, the means by which REST regulates transcription in neural stem cells remain unclear. Here, we show that REST recruits distinct corepressor platforms in neural stem cells. REST is able to both silence and repress neuronal genes in embryonic hippocampal neural stem cells by creating a chromatin environment that contains both repressive local epigenetic signature (characterized by low levels of histones H4 and H3K9 acetylation and elevated dimethylation of H3K9) and H3K4 methylation, which are characteristic of gene activation. Furthermore, inhibition of REST function leads to activation of several neuron-specific genes but does not lead to overt formation of mature neurons, supporting the notion that REST regulates part, but not all, of the neuronal differentiation program.
Greenway
Deborah J
DJ
Institute of Membrane and Systems Biology, University of Leeds, Leeds, United Kingdom.
Street
Miyoko
M
Jeffries
Aaron
A
Buckley
Noel J
NJ
D000818:Animals; D002417:Cattle; D002454:Cell Differentiation; D002843:Chromatin / Q000378:metabolism*; D047369:Chromatin Immunoprecipitation; D056970:Co-Repressor Proteins; D004268:DNA-Binding Proteins / Q000235:genetics / Q000378:metabolism; D053595:Embryonic Stem Cells / Q000166:cytology / Q000201:enzymology / Q000378:metabolism*; D020868:Gene Silencing; D006624:Hippocampus / Q000166:cytology* / Q000196:embryology* / Q000201:enzymology; D006655:Histone Deacetylases / Q000378:metabolism; D006657:Histones / Q000378:metabolism; D006801:Humans; D051379:Mice; D009419:Nerve Tissue Proteins / Q000235:genetics / Q000378:metabolism; D009474:Neurons / Q000166:cytology* / Q000201:enzymology / Q000378:metabolism*; D011485:Protein Binding; D021381:Protein Transport; D012333:RNA, Messenger / Q000235:genetics / Q000378:metabolism; D012045:Regulatory Sequences, Nucleic Acid / Q000235:genetics; D012097:Repressor Proteins / Q000235:genetics / Q000378:metabolism*; D056264:Sin3 Histone Deacetylase and Corepressor Complex; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism*; D014404:Tubulin / Q000378:metabolism; D000099229:RE1-Silencing Transcription Factor
D002843:Chromatin; D056970:Co-Repressor Proteins; D004268:DNA-Binding Proteins; D006655:Histone Deacetylases; D006657:Histones; D009419:Nerve Tissue Proteins; D012333:RNA, Messenger; D012097:Repressor Proteins; D056264:Sin3 Histone Deacetylase and Corepressor Complex; D014157:Transcription Factors; D014404:Tubulin; D000099229:RE1-Silencing Transcription Factor; C485650:Rcor2 protein, mouse; C099683:SIN3A transcription factor; C115812:Sin3b protein, mouse