High VHL Expression Reverses Warburg Phenotype and Enhances Immunogenicity in Kidney Tumor Cells.

High VHL Expression Reverses Warburg Phenotype and Enhances Immunogenicity in Kidney Tumor Cells.
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VHL 高表达可逆转 Warburg 表型并增强肾肿瘤细胞的免疫原性

DOI:
10.1016/j.gpb.2019.12.002
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发表时间:
2022-08
影响因子:
9.5
通讯作者:
Deng, Haiteng
Deng, Haiteng
中科院分区:
生物学2区
文献类型:
--
作者:
Zhu, Songbiao;Ding, Wenxi;Chen, Yuling;Wang, Weixuan;Xu, Renhua;Liu, Chongdong;Liu, Xiaohui;Deng, Haiteng

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透明细胞肾细胞癌(ccRCC)是一种常见的肾癌。Von Hippel-Lindau病肿瘤抑制基因VHL是一种已知的肿瘤抑制基因,在约50%的ccRCC患者中经常发生突变。然而,目前尚不清楚VHL是否会影响表达野生型VHL的ccRCC肿瘤的进展。在本研究中,我们使用癌症基因组图谱(TCGA)数据集发现,在ccRCC患者中,VHL的高表达与更好的无病生存(DFS)相关。我们发现,VHL在ccRCC细胞中的过表达抑制了上皮-间质转化(EMT)、甾醇调节元件结合蛋白1 (SREBP1)调控的甘油三酯合成和细胞增殖。蛋白质组学分析为我们提供了一个全面的观点,即VHL调节了四个生物过程,包括代谢、免疫调节、细胞凋亡和细胞运动。重要的是,我们发现VHL过表达导致抗原加工相关蛋白和干扰素应答蛋白的表达上调,从而使ccRCC细胞对干扰素治疗更敏感。我们定义了一个由10个干扰素反应蛋白组成的干扰素反应特征(IRS),其mRNA表达水平与ccRCC患者的DFS呈正相关。综上所述,我们的研究结果表明,高VHL表达的ccRCC患者亚群受益于免疫治疗。
Clear cell renal cell carcinoma (ccRCC) is a frequently occurring renal cancer. The Von Hippel-Lindau disease tumor suppressor VHL, a known tumor suppressor gene, is frequently mutated in about 50% of patients with ccRCC. However, it is unclear whether VHL influences the progression of ccRCC tumors expressing wild-type VHL. In the present study, we found that higher expression of VHL was correlated with the better disease-free survival (DFS) in ccRCC patients using The Cancer Genome Atlas (TCGA) datasets. We revealed that VHL overexpression in ccRCC cells inhibited epithelial-mesenchymal transition (EMT), sterol regulatory element-binding protein 1 (SREBP1)-regulated triglyceride synthesis, and cell proliferation. Proteomic analysis provided us a global view that VHL regulated four biological processes, including metabolism, immune regulation, apoptosis, and cell movement. Importantly, we found that VHL overexpression led to up-regulated expression of proteins associated with antigen processing and interferon-responsive proteins, thus rendering ccRCC cells more sensitive to interferon treatment. We defined an interferon-responsive signature (IRS) composed of ten interferon-responsive proteins, whose mRNA expression levels were positively correlated with DFS in ccRCC patients. Taken together, our results propose that the subset of ccRCC patients with high VHL expression benefit from immunotherapy.
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