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CHD2 is Required for Embryonic Neurogenesis in the Developing Cerebral Cortex.

Tianjin Shen1,2, Fen Ji1, Zengqiang Yuan3

  • 1State Key Laboratory of Reproductive Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, People's Republic of China.

Stem Cells (Dayton, Ohio)
|March 20, 2015
PubMed
Summary

Chromodomain helicase DNA-binding protein 2 (CHD2) is crucial for brain development, maintaining radial glial cell self-renewal and regulating neurogenesis. Its inactivation may contribute to neurodevelopmental disorders.

Keywords:
Embryonic stem cellsNeural differentiationNeural stem cellProgenitor cellsProliferationSelf-renewal

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Area of Science:

  • Neuroscience
  • Developmental Biology
  • Genetics

Background:

  • Chromodomain helicase DNA-binding protein 2 (CHD2) is linked to neurodevelopmental disorders like autism and intellectual disability.
  • The precise role of CHD2 in brain development remains largely uncharacterized.

Purpose of the Study:

  • To elucidate the function of CHD2 in mammalian brain development.
  • To investigate the molecular mechanisms by which CHD2 influences neurogenesis.

Main Methods:

  • Analyzing CHD2 expression patterns in developing brain cells (radial glial cells and intermediate progenitors).
  • Investigating the effects of CHD2 suppression on cell proliferation and differentiation.
  • Examining the interaction of CHD2 with the REST gene regulatory pathway.

Main Results:

  • CHD2 is primarily expressed in radial glial cells (RGs) and minimally in intermediate progenitors (IPs).
  • Suppression of CHD2 impairs RG self-renewal, boosts IP generation, and increases neuronal production.
  • CHD2 directly binds to the REST gene locus, regulating its expression; REST overexpression rescues neurogenesis defects.

Conclusions:

  • CHD2 plays a vital role in maintaining RG self-renewal and regulating neuronal output during cerebral cortical development.
  • Dysregulation of CHD2 during neurogenesis may underlie abnormal brain development and associated disorders.