Sestrin as a feedback inhibitor of TOR that prevents age-related pathologies.
Sestrin as a feedback inhibitor of TOR that prevents age-related pathologies.
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DOI:
10.1126/science.1182228
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发表时间:
2010-03-05
期刊:
影响因子:
--
通讯作者:
Karin M
中科院分区:
文献类型:
--
作者:
Lee JH;Budanov AV;Park EJ;Birse R;Kim TE;Perkins GA;Ocorr K;Ellisman MH;Bodmer R;Bier E;Karin M
Sestrins are conserved proteins that accumulate in cells exposed to stress and potentiate adenosine monophosphate-activated protein kinase (AMPK) and inhibit activation of target of rapamycin (TOR). We show that abundance of Drosophila Sestrin (dSesn) is increased upon chronic TOR activation through accumulation of reactive oxygen species (ROS) that cause activation of c-Jun N-terminal kinase (JNK) and transcription factor FoxO (Forkhead box O). Loss of dSesn resulted in age-associated pathologies including triglyceride accumulation, mitochondrial dysfunction, muscle degeneration and cardiac malfunction, which were prevented by pharmacological activation of AMPK or inhibition of TOR. Hence, dSesn appears to be a negative feedback regulator of TOR that integrates metabolic and stress inputs and prevents pathologies caused by chronic TOR activation, that may result from diminished autophagic clearance of damaged mitochondria, protein aggregates, or lipids.
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影响因子:
7.8
作者:
Wessells R;Fitzgerald E;Piazza N;Ocorr K;Morley S;Davies C;Lim HY;Elmén L;Hayes M;Oldham S;Bodmer R
通讯作者:
Bodmer R
影响因子:
13.3
作者:
Zhang, Yong;Qi, Haiyan;Jin, Shengkan
通讯作者:
Jin, Shengkan
DOI:
10.1126/science.1173635
发表时间:
2009-07-10
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Colman RJ;Anderson RM;Johnson SC;Kastman EK;Kosmatka KJ;Beasley TM;Allison DB;Cruzen C;Simmons HA;Kemnitz JW;Weindruch R
通讯作者:
Weindruch R
DOI:
10.1084/jem.20081297
发表时间:
2008-09-29
期刊:
The Journal of experimental medicine
影响因子:
--
作者:
Chen C;Liu Y;Liu R;Ikenoue T;Guan KL;Liu Y;Zheng P
通讯作者:
Zheng P
影响因子:
56.9
作者:
Dobrosotskaya, IY;Seegmiller, AC;Rawson, RB
通讯作者:
Rawson, RB