Fig. 8

Working model of GADD45β in the regulation of hepatic steatosis. GADD45β expression is decreased in hepatocytes fed an MCD diet. A decrease in GADD45β does not interact with Sirtuin 1 (SIRT1) and is subsequently degraded by ubiquitination. This results in increased lipogenesis and thereby synergistically aggravates fatty acid accumulation and hepatic steatosis.