Regulation of TFEB and V-ATPases by mTORC1.
Regulation of TFEB and V-ATPases by mTORC1.
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DOI:
10.1038/emboj.2011.257
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发表时间:
2011-07-29
期刊:
影响因子:
11.4
通讯作者:
Brugarolas, James
中科院分区:
文献类型:
--
作者:
Pena-Llopis, Samuel;Vega-Rubin-de-Celis, Silvia;Schwartz, Jacob C.;Wolff, Nicholas C.;Tran, Tram Anh T.;Zou, Lihua;Xie, Xian-Jin;Corey, David R.;Brugarolas, James
Mammalian target of rapamycin (mTOR) complex 1 (mTORC1) is an important, highly conserved, regulator of cell growth. Ancient among the signals that regulate mTORC1 are nutrients. Amino acids direct mTORC1 to the surface of the late endosome/lysosome, where mTORC1 becomes receptive to other inputs. However, the interplay between endosomes and mTORC1 is poorly understood. Here, we report the discovery of a network that links mTORC1 to a critical component of the late endosome/lysosome, the V-ATPase. In an unbiased screen, we found that mTORC1 regulated the expression of, among other lysosomal genes, the V-ATPases. mTORC1 regulates V-ATPase expression both in cells and in mice. V-ATPase regulation by mTORC1 involves a transcription factor translocated in renal cancer, TFEB. TFEB is required for the expression of a large subset of mTORC1 responsive genes. mTORC1 coordinately regulates TFEB phosphorylation and nuclear localization and in a manner dependent on both TFEB and V-ATPases, mTORC1 promotes endocytosis. These data uncover a regulatory network linking an oncogenic transcription factor that is a master regulator of lysosomal biogenesis, TFEB, to mTORC1 and endocytosis.
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