ras p21 protein promotes survival and fiber outgrowth of cultured embryonic neurons

Borasio, G. D. and John, J. and Wittinghofer, A. and Barde, Y. A. and Sendtner, M. and Heumann, R.. (1989) ras p21 protein promotes survival and fiber outgrowth of cultured embryonic neurons. Neuron, Vol. 2, H. 1. pp. 1087-1096.

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Official URL: http://edoc.unibas.ch/dok/A5259563

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Although evidence obtained with the PC12 cell line has suggested a role for the ras oncogene proteins in the signal transduction of nerve growth factor-mediated fiber outgrowth, little is known about the signal transduction mechanisms involved in the neuronal response to neurotrophic factors in nontransformed cells. We report here that the oncogene protein T24-ras, when introduced into the cytoplasm of freshly dissociated chick embryonic neurons, promotes the in vitro survival and neurite outgrowth of nerve growth factor-responsive dorsal root ganglion neurons, brain-derived neurotrophic factor-responsive nodose ganglion neurons, and ciliary neuronotrophic factor-responsive ciliary ganglion neurons. The proto-oncogene product c-Ha-ras also promotes neuronal survival, albeit less strongly. No effect could be observed with truncated counterparts of T24-ras and c-Ha-ras lacking the 23 C-terminal amino acids including the membrane-anchoring, palmityl-accepting cysteine. These results suggest a generalized involvement of ras or ras-like proteins in the intracellular signal transduction pathway for neurotrophic factors.
Faculties and Departments:05 Faculty of Science > Departement Biozentrum > Former Organization Units Biozentrum > Pharmacology/Neurobiology (Barde)
UniBasel Contributors:Barde, Yves-Alain
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Cell Press
Note:Publication type according to Uni Basel Research Database: Journal article
Last Modified:22 Mar 2012 14:21
Deposited On:22 Mar 2012 13:22

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