DBZ, a CNS-specific DISC1 binding protein, positively regulates oligodendrocyte differentiation
Shoko Shimizu1, Yoshihisa Koyama, Tsuyoshi Hattori
1Department of Molecular Neuropsychiatry, Graduate School of Medicine, Osaka University, Suita, Osaka, Japan; Division of Molecular Brain Science, Research Institute of Traditional Asian Medicine, Kinki University, Osaka-Sayama, Osaka, Japan.
Glia
|February 1, 2014
Summary
DBZ positively regulates oligodendrocyte differentiation, crucial for myelin development in the central nervous system (CNS). This protein
Area of Science:
- Neuroscience
- Cell Biology
- Developmental Biology
Background:
- Myelin gene alterations and white matter changes are observed in psychiatric disorders.
- DBZ, a central nervous system (CNS)-specific protein and member of the DISC1 interactome, is implicated in oligodendrocyte (OL) development.
Purpose of the Study:
- To investigate the role of DBZ in oligodendrocyte differentiation and myelination in vivo and in vitro.
Main Methods:
- Analysis of DBZ expression in mouse corpus callosum (CC) during myelination.
- Phenotypic analysis of DBZ knockout (DBZ-KO) mice.
- In vitro studies using rat oligodendrocyte differentiation models with DBZ knockdown via RNA interference.
Main Results:
- DBZ expression precedes myelin basic protein (MBP) expression in mouse CC.
- DBZ-KO mice exhibit delayed myelination and increased immature oligodendrocytes.
- DBZ knockdown impairs oligodendrocyte differentiation, reduces myelin markers, and upregulates negative regulators of differentiation.
Conclusions:
- DBZ is a key positive regulator of oligodendrocyte differentiation.
- DBZ plays a critical role in timely and proper myelination in the CNS.
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