Liver damage, inflammation, and enhanced tumorigenesis after persistent mTORC1 inhibition.
Liver damage, inflammation, and enhanced tumorigenesis after persistent mTORC1 inhibition.
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DOI:
10.1016/j.cmet.2014.05.001
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发表时间:
2014-07-01
期刊:
影响因子:
29
通讯作者:
Karin M
中科院分区:
文献类型:
--
作者:
Umemura A;Park EJ;Taniguchi K;Lee JH;Shalapour S;Valasek MA;Aghajan M;Nakagawa H;Seki E;Hall MN;Karin M
Obesity can result in insulin resistance, hepatosteatosis and non-alcoholic steatohepatitis (NASH) and increases liver cancer risk. Obesity-induced insulin resistance depends, in part, on chronic activation of mammalian target of rapamycin complex 1 (mTORC1), which also occurs in human and mouse hepatocellular carcinoma (HCC), a frequently fatal liver cancer. Correspondingly, mTORC1 inhibitors have been considered as potential NASH and HCC treatments. Using a mouse model in which high fat diet enhances HCC induction by the hepatic carcinogen DEN we examined whether mTORC1 inhibition attenuates liver inflammation and tumorigenesis. Notably, rapamycin treatment or hepatocyte-specific ablation of the specific mTORC1 subunit Raptor resulted in elevated interleukin 6 (IL-6) production, activation of STAT3 and enhanced HCC development, despite a transient reduction in hepatosteatosis. These results suggest that long term rapamycin treatment, which also increases IL-6 production in humans, is unsuitable for prevention or treatment of obesity-promoted liver cancer.
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影响因子:
64.5
作者:
He G;Dhar D;Nakagawa H;Font-Burgada J;Ogata H;Jiang Y;Shalapour S;Seki E;Yost SE;Jepsen K;Frazer KA;Harismendy O;Hatziapostolou M;Iliopoulos D;Suetsugu A;Hoffman RM;Tateishi R;Koike K;Karin M
通讯作者:
Karin M
影响因子:
3.7
作者:
Buron F;Malvezzi P;Villar E;Chauvet C;Janbon B;Denis L;Brunet M;Daoud S;Cahen R;Pouteil-Noble C;Gagnieu MC;Bienvenu J;Bayle F;Morelon E;Thaunat O
通讯作者:
Thaunat O
影响因子:
11.5
作者:
Abraham, Robert T.;Gibbons, James J.
通讯作者:
Gibbons, James J.
影响因子:
7.7
作者:
Barlow AD;Nicholson ML;Herbert TP
通讯作者:
Herbert TP
影响因子:
16
作者:
Düvel K;Yecies JL;Menon S;Raman P;Lipovsky AI;Souza AL;Triantafellow E;Ma Q;Gorski R;Cleaver S;Vander Heiden MG;MacKeigan JP;Finan PM;Clish CB;Murphy LO;Manning BD
通讯作者:
Manning BD