Deregulation of the Egfr/Ras signaling pathway induces age-related brain degeneration in the Drosophila mutant vap.

Abstract:

:Ras signaling has been shown to play an important role in promoting cell survival in many different tissues. Here we show that upregulation of Ras activity in adult Drosophila neurons induces neuronal cell death, as evident from the phenotype of vacuolar peduncle (vap) mutants defective in the Drosophila RasGAP gene, which encodes a Ras GTPase-activating protein. These mutants show age-related brain degeneration that is dependent on activation of the EGF receptor signaling pathway in adult neurons, leading to autophagic cell death (cell death type 2). These results provide the first evidence for a requirement of Egf receptor activity in differentiated adult Drosophila neurons and show that a delicate balance of Ras activity is essential for the survival of adult neurons.

journal_name

Mol Biol Cell

authors

Botella JA,Kretzschmar D,Kiermayer C,Feldmann P,Hughes DA,Schneuwly S

doi

10.1091/mbc.e02-05-0297

keywords:

subject

Has Abstract

pub_date

2003-01-01 00:00:00

pages

241-50

issue

1

eissn

1059-1524

issn

1939-4586

journal_volume

14

pub_type

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