Samples were prepared using a RIPA lysis buffer containing a protease inhibitor cocktail. The protein concentrations were quantified with the BCA kit (All kits from KeyGen Biotech). Subsequent experiment was conducted as recently described (26 (link)). The antibodies used for western blotting were as follows: Rabbit anti-BCL11A (ab191401, 1:10,000, Abcam), rabbit anti-AR (ab74272, 1:300, Abcam), rabbit anti-GAPDH (ab181603, 1:10,000, Abcam) and rabbit IgG (#7074, 1:10,000, Cell Signaling Technologies, Inc.).