Hormone refractory prostate cancer remains an incurable disease and th
e discovery of newer agents with higher cytotoxic activity is required
. Gossypol is a phenolic compound isolated from cottonseed oil which h
as been shown to have anti-spermatogenic effects. In in vitro studies,
gossypol appears to inhibit the growth of rat prostate cancer cell li
ne MAT-LyLu and human prostate adenocarcinoma cell lines PC-3, LNCaP a
nd DU-145. In vive, gossypol appeared to inhibit tumor growth of subcu
taneously implanted MAT-LyLu cells in Copenhagen rats. Gossypol may be
an active agent for the treatment of hormone refractory metastatic pr
ostate cancer.