GPX4 and steatosis: HFD led to adiposity, hepatomegaly, hepatic steatosis, fibrosis, inflammation, ferroptosis, mitochondrial injury, elevated hepatic tissue Fe2+, FAS, CHREBP, SREBP1, PGC1α, PPARα, PPARγ, SCD1, PEPCK, G6Pase, and DGAT1 as well as downregulated FUNDC1, GPx4, SLC7A11 and NCOA4, the effects (except for NCOA4) were nullified by CK2α deletion.