Article (Scientific journals)
Semaphorin 3A stimulates neurite extension and regulates gene expression in PC12 cells.
Schwamborn, Jens Christian; Fiore, Roberto; Bagnard, Dominique et al.
2004In Journal of Biological Chemistry, 279 (30), p. 30923-6
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Keywords :
Animals; Cells, Cultured; Gene Expression Regulation/drug effects; MAP Kinase Signaling System/drug effects; Mitochondria/drug effects/metabolism; Nerve Growth Factor/pharmacology; Neurites/drug effects; Neurons/drug effects/physiology/ultrastructure; PC12 Cells; Rats; Reactive Oxygen Species/metabolism; Recombinant Proteins/pharmacology; Semaphorin-3A/pharmacology; Signal Transduction
Abstract :
[en] The secreted semaphorin 3A (Sema3A) is a member of a large family of proteins that act as guidance signals for axons and dendrites. While the receptors and signaling pathways that mediate the repulsive effects of semaphorins are beginning to be understood in some detail, the mechanisms that are responsible for the ability of Sema3A to stimulate the extension of dendrites remain to be elucidated. Here we show that PC12 cells, a model widely used to study neuronal differentiation, can be used to dissect this pathway. Sema3A is as effective as nerve growth factor in stimulating the extension of neurites from PC12 cells. We show that Sema3A is able to regulate gene expression and identify mitochondria as a novel target of Sema3A signaling. Pharmacological block of mitochondrial reactive oxygen species production abolishes the extension of neurites in response to Sema3A. These results show that the characterization of transcripts that are regulated by axon guidance signals may help to identify novel components of their signaling pathways.
Disciplines :
Biochemistry, biophysics & molecular biology
Author, co-author :
Schwamborn, Jens Christian ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Life Science Research Unit
Fiore, Roberto
Bagnard, Dominique
Kappler, Joachim
Kaltschmidt, Christian
Puschel, Andreas W.
Language :
English
Title :
Semaphorin 3A stimulates neurite extension and regulates gene expression in PC12 cells.
Publication date :
2004
Journal title :
Journal of Biological Chemistry
ISSN :
1083-351X
Publisher :
American Society for Biochemistry and Molecular Biology, United States - Maryland
Volume :
279
Issue :
30
Pages :
30923-6
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBilu :
since 21 June 2013

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