Abstract
The aim of the present study is to compare the effects of two alpha1-adrenoceptor antagonist terazosin and alfuzosin together with one alpha-adrenoceptor antagonist phenoxybenzamine on androgen-independent prostate cancer cell lines PC-3 and DU145. Two androgen- independent cell lines, PC-3 and DU145, were used to determine the cell viability, colony-forming ability as well as cell cycle characteristics after exposure to these three drugs. This study showed that terazosin inhibited not only prostate cancer cell growth but also colony-forming ability, which is the main target of clinical treatment. On the other hand, alfuzosin and phenoxybenzamine have no effect on cell viability and colony forming ability of PC-3 and DU145. In addition, the terazosin inhibits cell growth through G(1) phase cell cycle arrest. This study provided the evidence that alpha1-adrenoceptor antagonist terazosin may have a therapeutic potential in the treatment of advanced androgen-independent prostate cancer.
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