Figure 7.
DNA topoisomerase IIα gene expression and p21CIP1. The effect in HL60 cells of treatment for 3 days with vorinostat (Vor; 0.075-1 μM), VPA (0.25-3 mM), or IDA (1.5 nM) or the combination on p21CIP1 or DNA topoisomerase IIα mRNA expression was determined using real-time PCR assay. Numbers on the y-axis represent relative expression of delta CT. (A) p21CIP1. (B) DNA topoisomerase IIα. Error bars indicate standard deviation.