Combinatorial profiles of oligodendrocyte-selective classes of transcriptional regulators differentially modulate myelin basic protein gene expression

Solen Gokhan, Mireya Marin-Husstege, Shau Yu Yung, Daran Fontanez, Patrizia Casaccia-Bonnefil, Mark F. Mehler

Research output: Contribution to journalArticle

97 Scopus citations

Abstract

Recent studies suggest that specific neural basic helix-loop-helix (HLH; i.e., Olig1 and Olig2, Mash1), associated inhibitory HLH (i.e., Id2 and Id4), high-mobility group domain (i.e., Sox10), and homeodomain (i.e., Nkx2.2) transcription factors are involved in oligodendrocyte (OL) lineage specification and progressive stages of maturation including myelination. However, the developmental interplay among these lineage-selective determinants, in a cell- and maturational stage-specific context, has not yet been defined. We show here in vivo and in vitro developmental expression profiles for these distinct classes of transcriptional regulators of OLs. We show that progressive stages of OL lineage maturation are characterized by dynamic changes in the subcellular distribution of these transcription factors and by different permutations of combinatorial transcriptional codes. Transient transfections of these precise combinatorial codes with a luciferase reporter gene driven by the myelin basic protein promoter define how changes in the molecular composition of these transcriptional complexes modulate myelin gene expression. Our overall findings suggest that the dynamic interplay between developmental stage-specific classes of transcriptional activators and associated inhibitory factors orchestrate myelin gene expression during terminal maturation of the mammalian CNS.

Original languageEnglish (US)
Pages (from-to)8311-8321
Number of pages11
JournalJournal of Neuroscience
Volume25
Issue number36
DOIs
StatePublished - Sep 7 2005

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Keywords

  • Forebrain
  • Lineage maturation
  • Neuronal-glial coupling
  • Oligodendrocytes
  • Proneural genes
  • Transcriptional regulation

ASJC Scopus subject areas

  • Neuroscience(all)

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