CLIN CANCER RES:PTEN缺失促进去势抵抗前列腺癌瘤内雄激素合成和肿瘤微环境重塑

2018-02-27 MedSci MedSci原创

瘤内雄激素合成(IAS)是去势抵抗前列腺癌雄激素受体再活化和抗激素治疗耐药的关键机制。但是,对驱动异常IAS的信号通路的了解尚缺乏。CLIN CANCER RES近期发表了一篇文章研究这一问题。

瘤内雄激素合成(IAS)是去势抵抗前列腺癌雄激素受体再活化和抗激素治疗耐药的关键机制。但是,对驱动异常IAS的信号通路的了解尚缺乏。CLIN CANCER RES近期发表了一篇文章研究这一问题。

作者在PTEN失活的人前列腺癌细胞系中研究AKT-RUNX2-OCN-GPRC6A-CREB信号轴组件对类固醇基因CYP11A1和CYP17A1和睾酮水平的影响。使用PTEN敲除鼠研究研究Runx2缺失或醋酸阿比特龙(ABA)对Cyp11a1和Cyp17a1表达,睾酮水平和肿瘤微环境重塑的影响。研究结果发现,PTEN失活前列腺癌细胞系中AKT-RUNX2-OCN-GPRC6A-CREB信号通路活化诱导CYP11A1和CYP17A1表达,促进睾酮产生。Pten敲除前列腺肿瘤中Runx2缺失降低Cyp11a1和Cyp17a1表达、睾酮水平和肿瘤生长。ABA治疗也可以抑制睾酮合成并在体内缓解Pten缺失诱导的肿瘤发生过程。Pten缺失诱导TME重塑,但Runx2缺失或ABA治疗可以通过降低胶原酶mmp9的表达逆转这一效果。

文章最后认为,异常RUNX2活化在PTEN缺失诱导的IAS和TME重塑中起到了关键作用,级联信号通路可以作为PTEN失活前列腺癌(包括去势抵抗前列腺癌)的有效治疗靶点

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    2018-11-09 kafei

    学习了谢谢

    0

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    2018-03-23 jyzxjiangqin

    PTEN缺失促进去势抵抗前列腺癌瘤内雄激素合成.

    0

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    2018-03-10 jyzxjiangqin

    缺失促进去势抵抗前列腺癌.

    0

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    2018-03-01 xiaogang317