NDLI: The Id4 HLH protein and the timing of oligodendrocyte differentiation

Content Provider	PubMed Central
Author	Kondo, Toru Raff, Martin
Copyright Year	2000
Abstract	An intracellular timer is thought to help control the timing of oligodendrocyte differentiation. We show here that the expression of the helix–loop–helix gene Id4 in oligodendrocyte precursor cells decreases in vivo and in vitro with a time course expected if Id4 is part of the timer. We also show that Id4 expression decreases prematurely when the precursor cells are induced to differentiate by mitogen withdrawal. Both Id4 mRNA and protein decrease together under all of these conditions, suggesting that the control of Id4 expression is transcriptional. Finally, we show that enforced expression of Id4 stimulates cell proliferation and blocks differentiation induced by either mitogen withdrawal or treatment with thyroid hormone. These findings suggest that a progressive fall in Id4 transcription is part of the intracellular timer that helps determine when oligodendrocyte precursor cells withdraw from the cell cycle and differentiate.
Related Links	http://dx.doi.org/10.1093/emboj/19.9.1998
Ending Page	2007
Page Count	10
Starting Page	1998
File Format	PDF
ISSN	14602075
e-ISSN	14602075
Journal	The EMBO Journal
Issue Number	9
Volume Number	19
Language	English
Publisher	Oxford University Press
Publisher Date	2000-05-02
Access Restriction	Open
Rights Holder	Oxford University Press
Subject Keyword	Biochemistry, Genetics and Molecular Biology(all) Immunology and Microbiology(all) Neuroscience(all) Molecular Biology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Neuroscience Immunology and Microbiology Medicine Molecular Biology

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