Oncogene:靶向加压素2型受体治疗肾细胞癌研究

2019-10-25 AlexYang MedSci原创

精氨酸后叶加压素(AVP)和其2型受体(V2R)在肾脏的盐分和水分稳态调控中具有必要的作用。体外试验中,V2R激活能够刺激肾细胞肿瘤(RCC)细胞系的增殖。最近,有研究人员在人类RCC肿瘤中调查了V2R表达和活性,以及其在RCC肿瘤生长中的作用。研究人员通过对癌症基因组数据库(TCGA)的调查,人类RCC肿瘤组织芯片的分析以及cDNA和肿瘤组织样本分析阐释了V2R表达和在透明细胞RCC(ccRCC

精氨酸后叶加压素(AVP)和其2型受体(V2R)在肾脏的盐分和水分稳态调控中具有必要的作用。体外试验中,V2R激活能够刺激肾细胞肿瘤(RCC)细胞系的增殖。

最近,有研究人员在人类RCC肿瘤中调查了V2R表达和活性,以及其在RCC肿瘤生长中的作用。研究人员通过对癌症基因组数据库(TCGA)的调查,人类RCC肿瘤组织芯片的分析以及cDNA和肿瘤组织样本分析阐释了V2R表达和在透明细胞RCC(ccRCC)中的活性。体外试验中,V2R拮抗剂OPC31260和托伐普坦,或者V2R基因的沉默能够减少786-O和Caki-1人类ccRCC细胞系的伤口闭合和细胞存活率。在小鼠异种种植模型中,OPC31260和托伐普坦能够通过减少细胞增殖和血管生成来减少RCC肿瘤的生长,并增加细胞凋亡。与之相反,V2R拮抗剂dDAVP能够显著的增加肿瘤生长。在人类ccRCC肿瘤中还观察到了细胞内高cAMP水平和ERK1/2激活。在小鼠肿瘤中和Caki-1细胞中,V2R拮抗剂能够减少cAMP和ERK1/2激活,而dDAVP治疗具有相反的作用。Caki-1细胞中V2R基因沉默同样能够减少cAMP和ERK1/2激活。

最后,研究人员指出,他们的结果为V2R信号在ccRCC中的致病性作用提供了新的证据,并且表明了AVP-V2R途径的抑制剂,包括FDA批准的药物托伐普坦可以作为ccRCC治疗的新药物。

原始出处:

Sonali Sinha, Nidhi Dwivedi, Shixin Tao et al. Targeting the vasopressin type-2 receptor for renal cell carcinoma therapy. Oncogene. 15 Oct 2019

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    2019-11-03 fyxzlh
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    2019-11-02 cy0324
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    2019-10-27 zsyan

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