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REVIEW |
1 Department of Pharmaceutical Sciences, School of Pharmacy and
2 University of Colorado Cancer Center, University of Colorado Health Sciences Center, Denver, Colorado 80262, USA
(Requests for offprints should be addressed to R Agarwal; Email: rajesh.agarwal{at}uchsc.edu)
Despite advances in the understanding of prostate cancer (PCa) growth and development, it is still the leading incidence of cases and the second leading cause of mortality due to cancer in men. The problem of early diagnosis compounded with the emergence of androgen independence during commonly used anti-androgen therapy of PCa, have been discouraging for optimal therapeutic response. Recently, many chemopreventive agents, including silibinin, inositol hexaphosphate, decursin, apigenin, acacetin, grape seed extract, curcumin, and epigallocatechin-3 gallate have been identified in laboratory studies, which could be useful in the management of PCa. In vivo pre-clinical studies have indicated chemopreventive effect of many such agents in PCa xenograft and transgenic mouse models. The molecular targets of these agents include cell signaling, cell-cycle regulators, and survival/apoptotic molecules, which are implicated in uncontrolled PCa growth and progression. Furthermore, angiogenic and metastatic targets, including vascular endothelial growth factor, hypoxia-inducing factor-1
, matrix metalloproteinase, and urokinase-type plasminogen activator are also modulated by many chemopreventive agents to suppress the growth and invasive potential of PCa. This review focuses on novel PCa chemopreventive observations in laboratory studies, which could provide the rationale for the prospective use of chemopreventive agents in translational studies.
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