Related Experiment Video
Updated: Jun 13, 2026
09:25
Live Imaging of Mitosis in the Developing Mouse Embryonic Cortex
Published on: June 4, 2014
Cdk5rap2 interacts with pericentrin to maintain the neural progenitor pool in the developing neocortex.
Joshua J Buchman1, Huan-Chung Tseng, Ying Zhou
1Department of Brain and Cognitive Sciences, Picower Institute for Learning and Memory, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Building 46, Room 4235A, Cambridge, MA 02139, USA.
Neuron
|May 18, 2010
Summary
Genetic mutations in Cdk5rap2 cause primary autosomal-recessive microcephaly (MCPH) by affecting neural progenitor cells. This study links Cdk5rap2 to pericentrin, revealing a common neurogenesis defect in microcephaly disorders.
Area of Science:
- Genetics
- Developmental Biology
- Neuroscience
Background:
- Primary autosomal-recessive microcephaly (MCPH) and Majewski osteodysplastic primordial dwarfism type II (MOPDII) are genetic disorders characterized by reduced brain size at birth.
- The underlying causes of MCPH, particularly alterations in the neural progenitor pool, remain incompletely understood.
Purpose of the Study:
- To investigate the role of Cdk5rap2 in MCPH and its connection to neural progenitor cell regulation.
- To explore a potential common molecular mechanism underlying microcephaly in different genetic disorders.
Main Methods:
- Utilized gene expression analysis to determine Cdk5rap2 expression in neural progenitor pools.
- Performed knockdown experiments to assess the effects of Cdk5rap2 and pericentrin depletion on progenitor cell behavior and differentiation.
- Investigated the localization and interaction of Cdk5rap2 and pericentrin at the centrosome.
Main Results:
- Cdk5rap2 is highly expressed in neural progenitors and its loss leads to apical progenitor depletion and premature neuronal differentiation.
- Depletion of pericentrin, a protein linked to MOPDII, mimics the effects of Cdk5rap2 knockdown in neural progenitors.
- Pericentrin deficiency impairs the recruitment of Cdk5rap2 to the centrosome.
Conclusions:
- Aberrations in the neurogenesis program, specifically involving Cdk5rap2 and pericentrin, represent a common mechanism in the pathogenesis of microcephaly.
- This research identifies a shared pathway that could be crucial for understanding and potentially treating various microcephaly-related genetic diseases.
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