title: Interplay between transcriptional control and chromatin regulation in the oligodendrocyte lineage.
abstract: The recent years have been characterized by a surge of studies on the role of transcription factors and histone modifications in regulating the progression of progenitors into oligodendrocytes. This review summarizes this body of evidence and presents an integrated view of transcriptional networks and epigenetic regulators defining proliferating progenitors and their differentiation along the oligodendrocyte lineage. We suggest that transcription factors in proliferating progenitors have direct access to DNA, due to predominantly euchromatic nuclei. As progenitors differentiate, however, transcriptional competence is modulated by the formation of heterochromatin, which modifies the association of DNA with nucleosomal histones and renders the access of transcription factors dependent on the activity of epigenetic modulators. These concepts are delineated within the context of development, and the potential functional implications are discussed.
authors.affiliation: Department of Neuroscience, Friedman Brain Institute and Icahn School of Medicine at Mount Sinai, New York City, New York.|Graduate School of Biological Sciences, Icahn School of Medicine at Mount Sinai, New York City, New York.
authors.forename: Marylens
authors.initials: M
authors.lastname: Hernandez
authors.affiliation: Department of Neuroscience, Friedman Brain Institute and Icahn School of Medicine at Mount Sinai, New York City, New York.|Department of Genomics and Multiscale Biology, Friedman Brain Institute and Icahn School of Medicine at Mount Sinai, New York City, New York.
authors.forename: Patrizia
authors.initials: P
authors.lastname: Casaccia
mesh_terms: D000818:Animals; D002843:Chromatin / Q000378:metabolism*; D044127:Epigenesis, Genetic; D006801:Humans; D058953:Neural Stem Cells / Q000378:metabolism; D009836:Oligodendroglia / Q000378:metabolism*; D014157:Transcription Factors / Q000378:metabolism*
chemical_list: D002843:Chromatin; D014157:Transcription Factors
keywords: brain; development; epigenetic; histone; myelin