Figure 2. PC3 and DU145 cells transfected with siRNA-PCMT1 down-regulated PCMT1 expression and Flag-PCMT1 up-regulated PCMT1 expression. (A, B) siRNA-PCMT1 transfection down-regulated PCMT1 mRNA expression of PC3 and DU145 cells, respectively. (C, D) siRNA-PCMT1 transfection down-regulated PCMT1 protein expression of PC3 and DU145 cells. (E, F) Flag-PCMT1 transfection up-regulated PCMT1 protein expression of PC3 and DU145 cells. Data are presented as mean ± SD of at least three experiments. **P < 0.01 and ***P < 0.001.