There is considerable evidence to suggest that progression of prostate cancers to castration- resistant is due to inappropriate activation of the androgen receptor (AR) and hence, the AR is a good target for the treatment of this disease. In this study we used two approaches to investigate AR activation and inhibition. We developed high-throughput, non-invasive, cell- based screening assays to rapidly and biologically assess factors that modulate prostate cancer growth and affect AR activity. Using these assays, we found that differentiated osteoblast-like condition media enhanced...