Effects of DHA treatment and CaMKK2-OE on ATP synthase expression. (A) Western blotting and protein expression levels of (B) ATP1A1, (C) ATP5H, (D) CaMKK2 and (E) NCLX in HepG2 cells transfected with CaMKK2-OE and treated with DHA. (F) Western blotting and protein expression levels of (G) ATP1A1, (H) ATP5H, (I) CaMKK2 and (J) NCLX in HuH-7 cells transfected with CaMKK2-OE and treated with DHA. All data are presented as the mean ± standard deviation (n=3). Data were analyzed using one-way analysis of variance followed by Bonferroni post hoc test. **P<0.01; ***P<0.001. NCLX, mitochondrial sodium/calcium exchanger protein; DHA, dihydroartemisinin; CaMKK2, calcium/calmodulin-dependent protein kinase kinase 2; OE, overexpression; NC, negative control; ATP1A1, sodium/potassium-transporting ATPase subunit α-1; ATP5H, ATP synthase subunit d, mitochondrial.