Rit GTPase regulates a p38 MAPK-dependent neuronal survival pathway.
Rit GTPase regulates a p38 MAPK-dependent neuronal survival pathway.
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RIT GTPase调节p38 MAPK依赖性神经元存活途径。
DOI:
10.1016/j.neulet.2012.10.036
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发表时间:
2012-12-07
影响因子:
2.5
通讯作者:
Andres DA
中科院分区:
文献类型:
--
作者:
Cai W;Rudolph JL;Sengoku T;Andres DA
Rit, along with Rin and Drosophila Ric, comprises the Rit subfamily of Ras-related small GTPases. Although the cellular functions of many Ras family GTPases are well established, the physiological significance of Rit remains poorly understood. Loss of Rit sensitizes multiple mammalian cell lines and mouse embryonic fibroblasts (MEFs) derived from Rit−/− mice to oxidative stress-mediated apoptosis. However, whether Rit-mediated pro-survival signaling extends to other cell types, particularly neurons, is presently unknown. Here, to examine these issues we generated a transgenic mouse overexpressing constitutively active Rit (RitQ79L) exclusively in neurons, under control of the Synapsin I promoter. Active Rit-expressing hippocampal neurons display a dramatic increase in oxidative stress resistance. Moreover, pharmacological inhibitor studies demonstrate that p38 MAPK, rather than a MEK/ERK signaling cascade, is required for Rit-mediated protection. Together, the present studies identify a critical role for the Rit-p38 MAPK signaling cascade in promoting hippocampal neuron survival following oxidative stress.
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影响因子:
7.8
作者:
Heumann, R;Goemans, C;Bartsch, D;Lingenhohl, K;Waldmeier, P C;Hengerer, B;Allegrini, P R;Schellander, K;Wagner, E F;Arendt, T;Kamdem, R H;Obst-Pernberg, K;Narz, F;Wahle, P;Berns, H
通讯作者:
Berns, H
影响因子:
56.9
作者:
Thornton, Tina M.;Pedraza-Alva, Gustavo;Rincon, Mercedes
通讯作者:
Rincon, Mercedes
影响因子:
4.8
作者:
Wu, Rui;Kausar, Hina;Rane, Madhavi J.
通讯作者:
Rane, Madhavi J.
影响因子:
5.3
作者:
Shi, GX;Andres, DA
通讯作者:
Andres, DA
影响因子:
7.5
作者:
Robinson, MJ;Cobb, MH
通讯作者:
Cobb, MH