The 3-(4,5-dimethylthiazol-2-yl)-5-(3-carboxymethoxyphenyl)-2-(4-sulfophenyl)-2H-tetrazolium (MTS) cell viability assay was performed as described previously (29 (link)). Briefly, 48 h after transfection with negative control or ZNF132-specific siRNAs, cells were treated with CellTiter 96 Aqueous One Solution Reagent (Promega, Madison, WI). After 1 h of treatment, the optical density was measured at 490 nm on a GloMax®-Multi+ Detection System Glomax (Promega). Results were presented as the mean ± standard deviation for three separate determinations.