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Cancer Res:在前列腺癌中,新的雄激素受体辅助调节因子GRHL2发挥了致瘤作用和抗转移作用

2017-05-15 AlexYang MedSci原创

前列腺癌中,雄激素受体(AR)辅助调节因子的表达和活性的改变是驱动疾病发展和治疗出现抗性的一种重要机制。最近,研究人员利用一种新的蛋白组学技术,鉴定了一个新的AR辅助调节因子-转录因子Grainhead-like 2(GRHL2),并描述了它潜在的在AR信号通路中致瘤角色。研究发现,GRHL2与AR在前列腺肿瘤中共定位,并且在前列腺爱重频繁的扩增和上调。重要的是,GRHL2在多种前列腺癌模型系统中

前列腺癌中,雄激素受体(AR)辅助调节因子的表达和活性的改变是驱动疾病发展和治疗出现抗性的一种重要机制。最近,研究人员利用一种新的蛋白组学技术,鉴定了一个新的AR辅助调节因子-转录因子Grainhead-like 2(GRHL2),并描述了它潜在的在AR信号通路中致瘤角色。

研究发现,GRHL2与AR在前列腺肿瘤中共定位,并且在前列腺爱重频繁的扩增和上调。重要的是,GRHL2在多种前列腺癌模型系统中可维持AR的表达,这种现象对细胞的增殖、改善AR的转录活性是需要的,并且月AR在染色质特异位点的共定位可以调控疾病进展相关的基因。GRHL2自身是一个AR调控基因,这样就在两者之间建立了一个回馈通路。另外,GRHL2与AR的联系同样适用于持续激活的删减了的AR变异体(ARs),即GRHL2可以与ARVs相互作用。GRHL2的这些致瘤功能可以被自身的功能抑制,比如抑制上皮-间质交替和细胞侵入。动力学证据表明了AR可以协助GRHL2维持上皮的表型。最后,研究人员指出,该研究鉴定了一个新的AR辅助调控因子,该调控因子在前列腺癌中具有多面性的角色,可以作为AR致瘤信号通路的增强子,也可以作为转移相关表型的抑制子。

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    2017-05-17 tanxingdoctor

    学习了谢谢分享

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    2017-05-16 一个字-牛

    学习了,谢谢分享

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    2017-05-16 执着追梦

    学习,感谢分享

    0

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染色体8q24表现为几种癌症的重要遗传敏感区域,包括了前列腺癌。然而,该区域的DNA的甲基化对癌症贡献的风险却所知甚少。最近,研究人员预期性的评估了8q24区域DNA甲基化与前列腺癌的关系,实验材料为利用从694名前列腺癌案例(包括172名恶性案例)的诊断前血样和703名在前列腺、肺、大肠和卵巢癌筛选临床实验中的对照,并利用逻辑回归评估让步比和95%置信区间。研究结果发现,在多项检验调整后,50个

Cancer Sci:CLDN8是一个激素调控基因,并且可以促进前列腺癌细胞的增殖和迁移

前列腺癌细胞的增殖是受激素受体(AR)信号途径控制。然而,AR靶基因的功能仍旧还没有很好的阐释。在之前的研究中,研究人员在前列腺癌细胞中鉴定了总体的AR结合位点(ARBS)和AR靶基因。最近,有研究人员关注了封闭蛋白8(CLDN8),且该蛋白能够紧密的结合在细胞膜中。研究发现,在该蛋白核酸序列的启动子区域有一个ARBS,且在序列中有两个功能性的激素响应元件(AREs)。报告基因实验表明了雄激素诱导

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