PMID- 25568127 OWN - NLM STAT- MEDLINE DCOM- 20150320 LR - 20220309 IS - 1529-2401 (Electronic) IS - 0270-6474 (Print) IS - 0270-6474 (Linking) VI - 35 IP - 1 DP - 2015 Jan 7 TI - Chromatin landscape defined by repressive histone methylation during oligodendrocyte differentiation. PG - 352-65 LID - 10.1523/JNEUROSCI.2606-14.2015 [doi] AB - In many cell types, differentiation requires an interplay between extrinsic signals and transcriptional changes mediated by repressive and activating histone modifications. Oligodendrocyte progenitors (OPCs) are electrically responsive cells receiving synaptic input. The differentiation of these cells into myelinating oligodendrocytes is characterized by temporal waves of gene repression followed by activation of myelin genes and progressive decline of electrical responsiveness. In this study, we used chromatin isolated from rat OPCs and immature oligodendrocytes, to characterize the genome-wide distribution of the repressive histone marks, H3K9me3 and H3K27me3, during differentiation. Although both marks were present at the OPC stage, only H3K9me3 marks (but not H3K27me3) were found to be increased during differentiation, at genes related to neuronal lineage and regulation of membrane excitability. Consistent with these findings, the levels and activity of H3K9 methyltransferases (H3K9 HMT), but not H3K27 HMT, increased more prominently upon exposure to oligodendrocyte differentiating stimuli and were detected in stage-specific repressive protein complexes containing the transcription factors SOX10 or YY1. Silencing H3K9 HMT, but not H3K27 HMT, impaired oligodendrocyte differentiation and functionally altered the response of oligodendrocytes to electrical stimulation. Together, these results identify repressive H3K9 methylation as critical for gene repression during oligodendrocyte differentiation. CI - Copyright (c) 2015 the authors 0270-6474/15/350352-14$15.00/0. FAU - Liu, Jia AU - Liu J AUID- ORCID: 0000-0002-6457-2935 AD - Department of Neuroscience. FAU - Magri, Laura AU - Magri L AD - Department of Neuroscience. FAU - Zhang, Fan AU - Zhang F AD - Bioinformatics Laboratory, Department of Medicine, and. FAU - Marsh, Nidaa O AU - Marsh NO AUID- ORCID: 0000-0003-2420-7295 AD - Department of Neuroscience. FAU - Albrecht, Stefanie AU - Albrecht S AD - Institute of Neuropathology, University Hospital Munster, D-48149 Munster, Germany. FAU - Huynh, Jimmy L AU - Huynh JL AD - Department of Neuroscience, Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, and. FAU - Kaur, Jasbir AU - Kaur J AUID- ORCID: 0000-0001-6842-2240 AD - Department of Neuroscience. FAU - Kuhlmann, Tanja AU - Kuhlmann T AD - Institute of Neuropathology, University Hospital Munster, D-48149 Munster, Germany. FAU - Zhang, Weijia AU - Zhang W AD - Bioinformatics Laboratory, Department of Medicine, and. FAU - Slesinger, Paul A AU - Slesinger PA AD - Department of Neuroscience. FAU - Casaccia, Patrizia AU - Casaccia P AUID- ORCID: 0000-0002-4785-9264 AD - Department of Neuroscience, Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York, New York 10029, and patrizia.casaccia@mssm.edu. LA - eng GR - R01 NS052738/NS/NINDS NIH HHS/United States GR - R37 NS042925/NS/NINDS NIH HHS/United States GR - 2R37NS042925-10/NS/NINDS NIH HHS/United States GR - R01NS52738/NS/NINDS NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't PL - United States TA - J Neurosci JT - The Journal of neuroscience : the official journal of the Society for Neuroscience JID - 8102140 RN - 0 (Chromatin) RN - 0 (Histones) SB - IM MH - Animals MH - Cell Differentiation/*physiology MH - Chromatin/*metabolism MH - Chromatin Immunoprecipitation/methods MH - Female MH - Histones/*metabolism MH - Male MH - Methylation MH - Mice MH - Mice, Inbred C57BL MH - Mice, Transgenic MH - Neurogenesis/*physiology MH - Oligodendroglia/*metabolism MH - Organ Culture Techniques MH - Pregnancy MH - Rats MH - Rats, Sprague-Dawley PMC - PMC4287153 OTO - NOTNLM OT - ChIP-seq OT - epigenetics OT - myelin OT - potassium channel EDAT- 2015/01/09 06:00 MHDA- 2015/03/21 06:00 PMCR- 2015/07/07 CRDT- 2015/01/09 06:00 PHST- 2015/01/09 06:00 [entrez] PHST- 2015/01/09 06:00 [pubmed] PHST- 2015/03/21 06:00 [medline] PHST- 2015/07/07 00:00 [pmc-release] AID - 35/1/352 [pii] AID - 2606-14 [pii] AID - 10.1523/JNEUROSCI.2606-14.2015 [doi] PST - ppublish SO - J Neurosci. 2015 Jan 7;35(1):352-65. doi: 10.1523/JNEUROSCI.2606-14.2015.