Castration; Cell Proliferation; Neoplasm Proteins/metabolism; Prostatic Neoplasms/pathology; Receptors, Androgen/genetics; Transcriptional Activation; Animals; Apoptosis; Blotting, Western; COS Cells; Cell Nucleus/metabolism; Cells, Cultured; Chlorocebus aethiops; Cytoplasm/metabolism; Fluorescent Antibody Technique; Gene Expression Regulation, Neoplastic; Glutathione Transferase/genetics; Glutathione Transferase/metabolism; Humans; Immunoenzyme Techniques; Immunoprecipitation; Male; Mice; Neoplasm Proteins/antagonists & inhibitors; Neoplasm Proteins/genetics; Prostatic Neoplasms/genetics; Prostatic Neoplasms/metabolism; Proteasome Endopeptidase Complex/metabolism; Protein Transport; RNA, Messenger/genetics; RNA, Small Interfering/genetics; Real-Time Polymerase Chain Reaction; Receptors, Androgen/metabolism; Reverse Transcriptase Polymerase Chain Reaction; Transplantation, Heterologous; Two-Hybrid System Techniques