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Gene deletion mutants reveal a role for semaphorin receptors of the plexin-B family in mechanisms underlying corticogenesis.
Mol. Cell. Biol. 30, 764-780 (2010)
Semaphorins and their receptors, plexins, are emerging as key regulators of various aspects of neural and nonneural development. Semaphorin 4D (Sema4D) and B-type plexins demonstrate distinct expression patterns over critical time windows during the development of the murine neocortex. Here, analysis of mice genetically lacking plexin-B1 or plexin-B2 revealed the significance of Sema4D-plexin-B signaling in cortical development. Deficiency of plexin-B2 resulted in abnormal cortical layering and defective migration and differentiation of several subtypes of cortical neurons, including Cajal-Retzius cells, GABAergic interneurons, and principal cells in vivo. In contrast, a lack of plexin-B1 did not impact on cortical development in vivo. In various ex vivo assays on embryonic forebrain, Sema4D enhanced the radial and tangential migration of developing neurons in a plexin-B2-dependent manner. These results suggest that Sema4D-plexin-B2 interactions regulate mechanisms underlying cell specification, differentiation, and migration during corticogenesis.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Radial glial-cells; Central-nervous-system; Cortical interneurons; Nuclear antigen; Cycle analysis; Migration; Neurons; Growth; RHO; Proliferation
Language
Publication Year
2010
HGF-reported in Year
2010
ISSN (print) / ISBN
0270-7306
e-ISSN
1098-5549
Journal
Molecular and Cellular Biology
Quellenangaben
Volume: 30,
Issue: 3,
Pages: 764-780
Publisher
American Society for Microbiology (ASM)
Reviewing status
Peer reviewed
Institute(s)
Institute of Stem Cell Research (ISF)
POF-Topic(s)
30204 - Cell Programming and Repair
Research field(s)
Stem Cell and Neuroscience
PSP Element(s)
G-500800-001
Scopus ID
75149162590
PubMed ID
19948886
Erfassungsdatum
2010-06-10