Highlights:
- GCN2 is activated in fatty livers and palmitic acid treated HepG2 cells.
- GCN2 deficiency ameliorates high fat diet-induced hepatic steatosis and insulin resistance.
- GCN2 promotes high fat diet-induced lipogenesis and oxidative stress.
- GCN2 regulates PPARγ, FAS and MTs expression via a CHOP dependent manner.