A muscle-specific p38 MAPK/Mef2/MnSOD pathway regulates stress, motor function, and life span in Drosophila.
A muscle-specific p38 MAPK/Mef2/MnSOD pathway regulates stress, motor function, and life span in Drosophila.
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DOI:
10.1016/j.devcel.2011.09.002
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发表时间:
2011-10-18
影响因子:
11.8
通讯作者:
Sanyal, Subhabrata
中科院分区:
文献类型:
--
作者:
Vrailas-Mortimer, Alysia;del Rivero, Tania;Mukherjee, Subhas;Nag, Sanjay;Gaitanidis, Alexandros;Kadas, Dimitris;Consoulas, Christos;Duttaroy, Atanu;Sanyal, Subhabrata
Molecular mechanisms that concordantly regulate stress, lifespan and age-related physiological changes remain incompletely understood. Here, we demonstrate that in Drosophila, a p38 MAP Kinase (p38K)/Mef2/MnSOD pathway is a co-regulator of stress and lifespan in vivo. Hence, over-expression of p38K extends lifespan in a MnSOD-dependent manner, while inhibition of p38K causes early lethality and precipitates age-related motor dysfunction and stress sensitivity, that is rescued through muscle-restricted (but not neuronal) add-back of p38K. Additionally, mutations in p38K are associated with increased protein carbonylation and Nrf2-dependent transcription, while adversely affecting metabolic response to hypoxia. Mechanistically, p38K modulates expression of the mitochondrial MnSOD enzyme through the transcription factor Mef2, and predictably, perturbations in MnSOD modify p38K-dependent phenotypes. Thus, our results uncover a muscle-restricted p38K-Mef2-MnSOD signaling module that influences lifespan and stress, distinct from the Insulin/JNK/FOXO pathway. We propose that potentiating p38K might be instrumental in restoring the mitochondrial detoxification machinery and combating stress-induced aging.
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影响因子:
11.8
作者:
Ha, Eun-Mi;Lee, Kyung-Ah;Lee, Won-Jae
通讯作者:
Lee, Won-Jae
DOI:
10.1006/mcbr.2001.0300
发表时间:
2001-11-01
期刊:
Molecular Cell Biology Research Communications
影响因子:
--
作者:
Berman, Kevin;McKay, Jim;Cobb, Melanie
通讯作者:
Cobb, Melanie
DOI:
10.1523/jneurosci.2688-09.2010
发表时间:
2010-04-28
期刊:
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子:
--
作者:
Blanchard FJ;Collins B;Cyran SA;Hancock DH;Taylor MV;Blau J
通讯作者:
Blau J
影响因子:
3.9
作者:
Cook-Wiens, E;Grotewiel, MS
通讯作者:
Grotewiel, MS
DOI:
10.1073/pnas.58.3.1112
发表时间:
1967-01-01
影响因子:
11.1
作者:
BENZER, S
通讯作者:
BENZER, S