Fig. 4.
Comparison of the effects of anti-AR shRNA and siRNA transfection with and without androgen withdrawal on AR-dependent reporter activity. LNCaP (A) and CWR22R (B) cells were cotransfected with either shRNA vectors (shAR1 or shGFP) or siRNA mixtures from Dharmacon (AR or GAPDH) together with the ARE-Luc reporter. Twenty-four hours after transfection cells were split and transferred to either FBS- or CSS-containing media. After an additional 24-hr incubation, luciferase activity was measured. Reporter activity is shown relative to that of cells transfected with shGFP and kept in FBS-containing medium (set at 1.0).