Fig 4.
A-F. Cellular localization, dose-response, and time-course of TQ-induced AR protein down-regulation in AR-expressing prostate cancer cells. AR protein levels determined by immunoblot in LNCaP (A) and LAPC4 (B) cells treated with 25 μM TQ or 25 μM AT for 4 d. (C) TQ dose-dependent reduction in AR protein levels in LNCaP cells treated with 4, 12.5, or 25 μM TQ for 4 d. (D) Immunoblot of time-dependent changes in AR protein levels from LAPC4 cells treated with 25 μM TQ for 24, 48, 72, and 96 h. Quantified AR protein levels are presented below each immunoblot (* P<0.05). (E-F) LNCaP cells were treated with vehicle control (E) or 25 μM TQ (F) for 4 d and AR protein expression was detected by immunocytochemistry.