DEPTOR cell-autonomously promotes adipogenesis, and its expression is associated with obesity.
DEPTOR cell-autonomously promotes adipogenesis, and its expression is associated with obesity.
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DOI:
10.1016/j.cmet.2012.07.008
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发表时间:
2012-08-08
期刊:
影响因子:
29
通讯作者:
Sabatini DM
中科院分区:
文献类型:
--
作者:
Laplante M;Horvat S;Festuccia WT;Birsoy K;Prevorsek Z;Efeyan A;Sabatini DM
DEP domain containing mTOR-interacting protein (DEPTOR) inhibits the mechanistic target of rapamycin (mTOR) but its in vivo functions are unknown. Previous work indicates that Deptor is part of the Fob3a quantitative trait locus (QTL) linked to obesity/leanness in mice with Deptor expression being elevated in white adipose tissue (WAT) of obese animals. This relation is unexpected considering the positive role of mTOR in adipogenesis. Here, we dissected the Fob3a QTL and show that Deptor is the highest priority candidate promoting WAT expansion in this model. Consistently, transgenic mice overexpressing DEPTOR accumulate more WAT. Furtheremore, in humans, DEPTOR expression in WAT correlates with the degree of obesity. We show that DEPTOR is induced by glucocorticoids during adipogenesis and that its overexpression promotes, while its suppression blocks, adipogenesis. DEPTOR activates the pro-adipogenic Akt/PKB-PPAR-γ axis by dampening mTORC1-mediated feedback inhibition of insulin signaling. These results establish DEPTOR as a new regulator of adipogenesis.
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影响因子:
158.5
作者:
BOUCHARD, C;TREMBLAY, A;FOURNIER, G
通讯作者:
FOURNIER, G
影响因子:
15.9
作者:
Le Bacquer, Olivier;Petroulakis, Emmanuel;Sonenberg, Nahum
通讯作者:
Sonenberg, Nahum
影响因子:
2.5
作者:
Horvat, S;Bünger, L;Keightley, PD
通讯作者:
Keightley, PD
影响因子:
64.5
作者:
Peterson TR;Laplante M;Thoreen CC;Sancak Y;Kang SA;Kuehl WM;Gray NS;Sabatini DM
通讯作者:
Sabatini DM
影响因子:
15.9
作者:
Nishino, Naonobu;Tamori, Yoshikazu;Kasuga, Masato
通讯作者:
Kasuga, Masato