Fig. 2

STEAP4 overexpression inhibits DDP-induced chemotherapy resistance in vitro. a GSEA indicating significant correlation between STEAP4 expression and DDP-induced chemotherapy resistance generation. b Western blot analysis of STEAP4 expression in the indicated STEAP4-infected cells. GAPDH was used as the loading control. c Cell viability analysis for the effect of STEAP4 overexpression in DDP-induced cell proliferation. d Colony formation analysis for the effect of STEAP4 overexpression in DDP-induced cell proliferation. e Annexin/PI apoptosis analysis for the effect of STEAP4 overexpression in DDP-induced cell apoptosis. Bars represent the mean ± SD of three independent experiments; *P < 0.05