A Cell counts following transient transfection with synthetic control siRNA (sicontr-1) or EZH2-targeting siRNAs (siEZH2 pool). Graphs represent relative cell numbers, at the indicated time points after siRNA transfection. Cell numbers at transfection (time point 0) were set as 1.0. Experiments were performed in triplicates, standard deviations are indicated. Asterisks equal p≤0.05, n.s. not significant. B Colony formation assays. HCT116, LoVo, DLD1, and RKO cells were stably transfected with plasmids expressing two different shRNAs against EZH2 (pCEP-shEZH2-1, pCEP-shEZH2-2) or two control shRNAs (pCEP-shluc or pCEP-shcontr-1). Experiments were independently repeated at least thrice, with consistent results.