ER stress cooperates with hypernutrition to trigger TNF-dependent spontaneous HCC development.
ER stress cooperates with hypernutrition to trigger TNF-dependent spontaneous HCC development.
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DOI:
10.1016/j.ccr.2014.07.001
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发表时间:
2014-09-08
期刊:
影响因子:
50.3
通讯作者:
Karin M
中科院分区:
文献类型:
--
作者:
Nakagawa H;Umemura A;Taniguchi K;Font-Burgada J;Dhar D;Ogata H;Zhong Z;Valasek MA;Seki E;Hidalgo J;Koike K;Kaufman RJ;Karin M
Endoplasmic reticulum (ER) stress has been implicated in the pathogenesis of viral hepatitis, insulin resistance, hepatosteatosis and non-alcoholic steatohepatitis (NASH), disorders that increase risk of hepatocellular carcinoma (HCC). To determine whether and how ER stress contributes to obesity-driven hepatic tumorigenesis we fed wild type (WT) and MUP-uPA mice, in which hepatocyte ER stress is induced by plasminogen activator expression, with high fat diet. Although both strains were equally insulin resistant, the MUP-uPA mice exhibited more liver damage, immune infiltration and increased lipogenesis, and as a result displayed classical NASH signs and developed typical steatohepatitic HCC. Both NASH and HCC development were dependent on TNF produced by inflammatory macrophages that accumulate in the MUP-uPA liver in response to hepatocyte ER stress.
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通讯作者:
Kaufman, Randal J.
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