Oncogene:PDZK-1可以通过抑制SHP-1的磷酸化抑制肾细胞癌的发生和发展

2017-07-16 AlexYang MedSci原创

肾细胞癌(RCC)是最具有侵略性泌尿外科癌症之一,然而,RCC致癌作用的的机制到目前为止仍旧不清楚。最近,研究人员通过利用基因表达分析和功能聚类发现,包含PDZ结构域蛋白1(PDZK1)在人类透明细胞肾细胞癌(ccRCC)中表达下调,该现象在一些相互独立的公共ccRCC数据库中同样得到了鉴证。另外,通过在ccRCC细胞系中PDZK1的超表达和敲除,研究人员阐释了PDZK1可以抑制细胞增殖、细胞周期

肾细胞癌(RCC)是最具有侵略性泌尿外科癌症之一,然而,RCC致癌作用的的机制到目前为止仍旧不清楚。

最近,研究人员通过利用基因表达分析和功能聚类发现,包含PDZ结构域蛋白1(PDZK1)在人类透明细胞肾细胞癌(ccRCC)中表达下调,该现象在一些相互独立的公共ccRCC数据库中同样得到了鉴证。另外,通过在ccRCC细胞系中PDZK1的超表达和敲除,研究人员阐释了PDZK1可以抑制细胞增殖、细胞周期G1/S时期转换、细胞迁移和侵入,这些表明了PDZK1在ccRCC的发生和发展过程中具有肿瘤抑制子的角色。研究人员更进一步的阐释了,PDZK1可以通过针对SHP-1来抑制ccRCC细胞的增殖和迁移。另外,在ccRCC细胞中,PDZK1可以通过阻断SHP-1在 Tyr536的磷酸化的方式,并通过值SHP-1和PLCβ3的关系,之后阻滞Akt磷酸化和促进STAT5磷酸化的过程从而抑制细胞的增殖。更多的是,在异种种植体内试验研究中,PDZK1对SHP-1的磷酸化抑制和肿瘤生长抑制的影响进一步得到了确定。因此,PDZK1的表达与SHP-1激活及磷酸化、晚期病理阶段、肿瘤重量和大小和ccRCC病人预后均呈负相关关系。

最后,研究人员指出,这些发现为PDZK1表达与SHP-1激活和ccRCC不良临床结果预后呈负相关关系提供了一手资料。另外,在ccRCC中,PDZK1可通过抑制SHP-1活性被鉴定为一个新的肿瘤抑制子。

原始出处:


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    2017-12-04 wrj0121
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    2017-10-31 cy0324
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    2017-07-18 zsyan
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    2017-07-17 121485632188547785

    不错,正在肾癌发病机制

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    2017-07-17 130****4638

    学习了谢谢分享

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    2017-07-16 三生有幸9135

    学习一下谢谢分享

    0

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