(A and B) MDA-MB-231 subclones transfected with NTC, or shRNA vector targeting S100A10, ANXA2, or SPT6, were treated with vehicle (V) or paclitaxel (P), and ChIP-qPCR assays were performed using S100A10 (A) or SPT6 (B) Ab and primers flanking OCT4 binding sites in the indicated genes (mean ± SEM; n = 3); *P < 0.05, **P < 0.01, ***P < 0.001 vs. NTC-V; #P < 0.05, ##P < 0.01, ###P < 0.001 vs. NTC-P (2-way ANOVA with Bonferroni’s post hoc test).