Note to users. If you're seeing this message, it means that your browser cannot find this page's style/presentation instructions -- or possibly that you are using a browser that does not support current Web standards. Find out more about why this message is appearing, and what you can do to make your experience of our site the best it can be.


Sci. STKE, 24 May 2005
Vol. 2005, Issue 285, p. pe24
[DOI: 10.1126/stke.2852005pe24]


Class 3 Semaphorin Signaling: The End of a Dogma

Vincent Potiron1,2 and Joëlle Roche1*

1UMR-CNRS 6187, Institut de Physiologie et Biologie Cellulaires, Université de Poitiers, 40 avenue du recteur Pineau, 86022 Poitiers, France.
2Division of Medical Oncology, University of Colorado Health Sciences Center, Post Office Box 6511, Aurora, CO 80045, USA.

Abstract: Semaphorins—a family of secreted, membrane-bound, and transmembrane proteins—play an important role in the development of various organs, as well as in axonal pathfinding, angiogenesis, tumorigenesis, and the immunological response. Neuropilins 1 and 2 (NRP1 and 2) are receptors for the class 3 secreted semaphorins (SEMA3s) but not for the other classes of semaphorins. NRPs are also coreceptors for vascular endothelial growth factor 165 (VEGF165), suggesting that SEMA3s could inhibit the VEGF165-VEGF receptor (VEGFR) pathway during angiogenesis. Until recently, it was believed that binding of SEMA3s to neuropilins was necessary to initiate signaling from plexins, the active players in semaphorin signal transduction. However, Gu and colleagues have recently described an exception: Their research suggests that SEMA3E signal transduction may be neuropilin independent. This Perspective focuses on this recent finding in the context of semaphorin signaling outside the nervous system.

*Corresponding author. E-mail: joelle.roche{at}

Citation: V. Potiron, J. Roche, Class 3 Semaphorin Signaling: The End of a Dogma. Sci. STKE 2005, pe24 (2005).

Read the Full Text

Semaphorin SEMA3F Affects Multiple Signaling Pathways in Lung Cancer Cells.
V. A. Potiron, G. Sharma, P. Nasarre, J. A. Clarhaut, H. G. Augustin, R. M. Gemmill, J. Roche, and H. A. Drabkin (2007)
Cancer Res. 67, 8708-8715
   Abstract »    Full Text »    PDF »

To Advertise     Find Products

Science Signaling. ISSN 1937-9145 (online), 1945-0877 (print). Pre-2008: Science's STKE. ISSN 1525-8882