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Prostate cancer-from steroid transformations to clinical translation

机译:前列腺癌-从类固醇转化到临床翻译

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The survival benefit conferred by two hormonal agents in phase III trials has clinically validated the long suspected and now widely recognized phenomenon of castration-resistant prostate cancer (CRPC) hormone dependence. Abiraterone inhibits steroid 17-hydroxylase/17,20-lyase (CYP17A1) and blocks androgen synthesis, whereas enzalutamide directly binds and antagonizes the androgen receptor. Both agents are highly effective against CRPC and significantly prolong survival following docetaxel treatment. However, this clinical validation of the androgen pathway has led to questions regarding the fundamental mechanisms of CRPC, as well as resistance to abiraterone and enzalutamide. Our understanding of the predominant steroid transformation pathways that lead to dihydrotestosterone synthesis in CRPC is evolving. The role of steroidogenesis in the development of resistance to abiraterone and enzalutamide remains uncertain. The specific roles of candidate enzyme targets in the development of resistance to these agents must be defined if we are to identify novel targets for improved pharmacologic therapies.
机译:两种激素药物在III期临床试验中所获得的生存益处已在临床上证实了长期以来人们一直怀疑并现已广泛认可的去势抵抗性前列腺癌(CRPC)激素依赖性现象。阿比特龙抑制类固醇17-羟化酶/ 17,20-裂解酶(CYP17A1)并阻断雄激素合成,而enzalutamide直接结合并拮抗雄激素受体。两种药物对CRPC都非常有效,并在多西他赛治疗后显着延长了生存期。然而,这种雄激素途径的临床验证已经引起了关于CRPC的基本机制以及对阿比特龙和恩杂鲁胺的抗性的质疑。我们对导致CRPC中二氢睾丸激素合成的主要类固醇转化途径的理解正在发展。类固醇生成在对阿比特龙和恩杂鲁胺抗药性发展中的作用仍不确定。如果我们要确定用于改善药理疗法的新靶标,则必须定义候选酶靶标在对这些药物产生抗药性中的特定作用。

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