Cited by 91Neurogenesis and neuroplasticity mechanismsMultiple Sclerosis Research StudiesDevelopmental Biology and Gene Regulation

Multiple roles of Id4 in developmental myelination: predicted outcomes and unexpected findings

Marin‐Husstege, Mireya, He, Ye, Li, Jiadong, Kondo, Toru, Sablitzky, Fred, Casaccia‐Bonnefil, Patrizia·2006·Glia

Abstract

Myelination in the central nervous system is a complex process requiring the integration of oligodendrocyte progenitor differentiation and the coordinate expression of myelin genes. This study addresses the role of the helix-loop-helix protein Id4 in these two events. Overexpression of Id4 in oligodendrocyte progenitors prevents differentiation and consequently decreases the endogenous expression of all myelin genes. Conversely, progenitors lacking Id4 display precocious differentiation both in vitro and in vivo, and this phenotype is partially compensated by increased apoptosis. Besides this role, Id4 also has the ability to decrease the activity of specific myelin promoters, since Id4 overexpression decreases the activity of luciferase reporter genes driven by the ceramide galactosyltransferase (CGT) or myelin basic protein (MBP) promoter, but not by a myelin proteolipid protein (PLP) promoter. Consistent with these results, the expression levels of MBP and CGT are greater in neonatal Id4 null mice when compared with wild-type siblings and correlate with the early detection of MBP immunoreactive myelinated fibers. In contrast, the levels of other myelin proteins, such as PLP and myelin associated glycoprotein (MAG) are decreased in the Id4 null mice. MAG expression is localized to the soma rather than the fibers of immunoreactive cells in the neonatal brain and compensated at later developmental stages. These data support the role of Id4 as oligodendrocyte differentiation inhibitor with the ability to differentially regulate the expression and subcellular distribution of myelin gene products.

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Crossref · 10.1002/glia.20385

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Authors
Marin‐Husstege, M., He, Y., Li, J., Kondo, T., Sablitzky, F., & Casaccia‐Bonnefil, P.
Affiliations
University of Nottingham (GB)
Corresponding author
  • Sablitzky, Fred
  • Casaccia‐Bonnefil, Patrizia
Venue
Glia
Publisher
Wiley
Published
2006-07-21
Volume
54
Issue
4
Pages
285-296
ISSN
  • 0894-1491 (ISSN-L)
  • 1098-1136
OpenAlex
W2039383073
Cited by
91
References
43
Citations by year
2026: 1 · 2025: 2 · 2024: 7 · 2023: 3 · 2022: 8 · 2021: 4 · 2020: 2 · 2019: 7 · 2018: 1 · 2017: 2 · 2016: 5 · 2015: 3 · 2014: 4 · 2013: 4 · 2012: 4
FWCI
2.17
Type
journal article
Language
en
Open access
closed
Locations
  • Glia (publishedVersion)
  • PubMed (publishedVersion)
Funders
  • Wellcome Trust
  • National Institute of Neurological Disorders and Stroke (R01NS042925, R01NS42925)
Topics
  • Life Sciences › Neuroscience › Developmental Neuroscience › Neurogenesis and neuroplasticity mechanisms
  • Health Sciences › Medicine › Pathology and Forensic Medicine › Multiple Sclerosis Research Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Developmental Biology and Gene Regulation
Keywords
Id4, myelination, myelin gene expression, helix-loop-helix proteins, myelin basic protein, myelin-associated glycoprotein, proteolipid protein, apoptosis, central nervous system development
MeSH terms
Animals, Cell Differentiation, Cells, Cultured, Densitometry, Myelin Basic Protein, Immunohistochemistry, Luciferases, Mitogens, Myelin Sheath, Oligodendroglia, Promoter Regions, Genetic, Stem Cells, Thyroid Hormones, Transfection, Blotting, Western, Gene Expression, Mice, Knockout, Reverse Transcriptase Polymerase Chain Reaction, In Situ Nick-End Labeling, Mice, Inhibitor of Differentiation Proteins

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