Growth inhibiting effects of terazosin on androgen-independent prostate cancer cell lines
Xu, K.; Wang, X.; Ling, M.; Wong, Y.
Chinese Medical Journal 116(11): 1673-1677
2003
ISSN/ISBN: 0366-6999 PMID: 14642133 Document Number: 564432
Objective: To study the effects of an alpha1-adrenoceptor antagonist, terazosin on the androgen-independent prostate cancer cell lines PC-3 and DU145. Methods: Two androgen independent cell lines, PC-3 and DU145, were used to determine cell viability, colony-forming ability, as well as cell cycle distribution, after exposure to terazosin. Western blot analysis was used to determine the expression of p21WAF1 and p27KIP1. Results: This study shows that terazosin inhibits not only prostate cancer cell growth but also its colony forming ability, both of which are main targets of clinical treatment. In addition, terazosin is shown to inhibit cell growth through Gl phase cell cycle arrest and the up-regulation of p27KIP1. Conclusion: This study provides evidence that the alpha1-adrenoceptor antagonist terazosin may have therapeutic potential in the treatment of advanced hormone refractory prostate cancer.