alexa The complex role of AR signaling after cytotoxic insult: implications for cell-cycle-based chemotherapeutics.


Journal of Cancer Science & Therapy

Author(s): Comstock CE, Knudsen KE

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Abstract Prostatic adenocarcinomas are dependent on androgen receptor (AR) signaling for growth and progression, in part through the ability of AR to induce G1-S phase cell cycle transition. Hormonal therapies that inhibit AR activity are the first line of intervention for disseminated disease, and are initially quite effective; however, recurrent, incurable tumors ultimately arise with restored AR function. Given the importance of AR in governing the potentiation of this tumor type, there has been a dedicated interest in dissecting the mechanisms by which AR promotes prostate cancer proliferation and survival. Recent studies have challenged the utility of manipulating AR activity to enhance cell death in combination with genotoxic insult. Herein, the role of AR in controlling cell cycle progression and paradoxical roles of AR in survival signals are considered, as are the potential implications of these findings for chemotherapeutic response. Although there is much to be resolved, the present data suggest that knowledge of AR action in promoting cellular proliferation can be utilized for the design of coordinate strategies that maximize cell death in response to cytotoxic chemotherapeutics. This article was published in Cell Cycle and referenced in Journal of Cancer Science & Therapy

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