Regulation of TORC1 in response to amino acid starvation via lysosomal recruitment of TSC2.
Regulation of TORC1 in response to amino acid starvation via lysosomal recruitment of TSC2.
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DOI:
10.1016/j.cell.2014.01.024
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发表时间:
2014-02-13
期刊:
影响因子:
64.5
通讯作者:
Teleman AA
中科院分区:
文献类型:
--
作者:
Demetriades C;Doumpas N;Teleman AA
TOR Complex 1 (TORC1) is a potent anabolic regulator of cellular growth and metabolism. When cells have sufficient amino acids, TORC1 is active due to its lysosomal localization mediated via the Rag GTPases. Upon amino acid removal, the Rag GTPases release TORC1, causing it to become cytoplasmic and inactive. We show here that upon amino acid removal, the Rag GTPases also recruit TSC2 to the lysosome, where it can act on Rheb. Only when both the Rag GTPases and Rheb are inactive is TORC1 fully released from the lysosome. Upon amino acid withdrawal, cells lacking TSC2 fail to completely release TORC1 from the lysosome, fail to completely inactivate TORC1, and fail to adjust physiologically to amino acid starvation. These data suggest that regulation of TSC2 subcellular localization may be a general mechanism to control its activity, and places TSC2 in the amino acid sensing pathway to TORC1.
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影响因子:
64.5
作者:
Leprivier G;Remke M;Rotblat B;Dubuc A;Mateo AR;Kool M;Agnihotri S;El-Naggar A;Yu B;Somasekharan SP;Faubert B;Bridon G;Tognon CE;Mathers J;Thomas R;Li A;Barokas A;Kwok B;Bowden M;Smith S;Wu X;Korshunov A;Hielscher T;Northcott PA;Galpin JD;Ahern CA;Wang Y;McCabe MG;Collins VP;Jones RG;Pollak M;Delattre O;Gleave ME;Jan E;Pfister SM;Proud CG;Derry WB;Taylor MD;Sorensen PH
通讯作者:
Sorensen PH
影响因子:
1.5
作者:
Lesche, R;Groszer, M;Wu, H
通讯作者:
Wu, H
影响因子:
9.2
作者:
Long, X;Lin, Y;Avruch, J
通讯作者:
Avruch, J
影响因子:
4.8
作者:
Smith, EM;Finn, SG;Proud, CG
通讯作者:
Proud, CG
DOI:
10.1038/nrm3522
发表时间:
2013-03
期刊:
Nature reviews. Molecular cell biology
影响因子:
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作者:
通讯作者:
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