Cell autonomous role of PTEN in regulating castration-resistant prostate cancer growth.

Cell autonomous role of PTEN in regulating castration-resistant prostate cancer growth.
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DOI:
10.1016/j.ccr.2011.05.006
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发表时间:
2011-06-14
期刊:
影响因子:
50.3
通讯作者:
Wu H
Wu H
中科院分区:
医学1区
文献类型:
--
作者:
Mulholland DJ;Tran LM;Li Y;Cai H;Morim A;Wang S;Plaisier S;Garraway IP;Huang J;Graeber TG;Wu H

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PTEN/PI 3 K通路的改变与晚期和去势抵抗性前列腺癌(CRPC)相关。然而,PTEN丢失如何参与CRPC的发展尚不清楚。在这里,我们表明,去势抵抗性生长是一个内在的属性Pten空前列腺癌(CaP)细胞,独立于癌症的发展阶段。PTEN缺失通过调节雄激素受体(AR)转录因子活性抑制雄激素应答基因表达。上皮中Ar的条件性缺失至少部分地通过下调雄激素应答基因Fkbp 5和防止PHLPP介导的AKT抑制来促进Pten无效癌细胞的增殖。我们的研究结果确定PI 3 K和AR通路串扰作为CRPC发展的机制,对CaP病因学和治疗具有潜在的重要意义。
Alteration of the PTEN/PI3K pathway is associated with late stage and castrate resistant prostate cancer (CRPC). However, how PTEN loss involves in CRPC development is not clear. Here we show that castration-resistant growth is an intrinsic property of Pten-null prostate cancer (CaP) cells, independent of cancer development stage. PTEN loss suppresses androgen-responsive gene expressions by modulating androgen receptor (AR) transcription factor activity. Conditional deletion of Ar in the epithelium promotes the proliferation of Pten-null cancer cells, at least in part, by down-regulating androgen-responsive gene Fkbp5 and preventing PHLPP-mediated AKT inhibition. Our findings identify PI3K and AR pathway crosstalk as a mechanism of CRPC development, with potentially important implications for CaP etiology and therapy.
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发表时间: 2010-07-30
期刊: Science (New York, N.Y.)
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