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Hirschberg, A.* ; Deng, S.* ; Korostylev, A.* ; Paldy, E.* ; Costa, M.R. ; Worzfeld, T.* ; Vodrazka, P.* ; Wizenmann, A. ; Götz, M. ; Offermanns, S.* ; Kuner, R.*

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)
DOI PMC
Open Access Green as soon as Postprint is submitted to ZB.
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
Corresponding Author
Keywords Radial glial-cells; Central-nervous-system; Cortical interneurons; Nuclear antigen; Cycle analysis; Migration; Neurons; Growth; RHO; Proliferation
ISSN (print) / ISBN 0270-7306
e-ISSN 1098-5549
Quellenangaben Volume: 30, Issue: 3, Pages: 764-780 Article Number: , Supplement: ,
Publisher American Society for Microbiology (ASM)
Non-patent literature Publications
Reviewing status Peer reviewed