VHL通过对血管细胞黏附分子-1(VCAM-1)的核因子κB依赖性调控促进针对肾细胞癌的免疫反应。

VHL promotes immune response against renal cell carcinoma via NF-κB-dependent regulation of VCAM-1.

作者信息

Labrousse-Arias David, Martínez-Alonso Emma, Corral-Escariz María, Bienes-Martínez Raquel, Berridy Jaime, Serrano-Oviedo Leticia, Conde Elisa, García-Bermejo María-Laura, Giménez-Bachs José M, Salinas-Sánchez Antonio S, Sánchez-Prieto Ricardo, Yao Masahiro, Lasa Marina, Calzada María J

机构信息

Department of Medicine, Instituto de Investigación Sanitaria Princesa, School of Medicine, Universidad Autónoma de Madrid, 28049 Madrid, Spain.

Research Departament, Instituto Ramón y Cajal de Investigación Sanitaria, 28034 Madrid, Spain.

出版信息

J Cell Biol. 2017 Mar 6;216(3):835-847. doi: 10.1083/jcb.201608024. Epub 2017 Feb 24.

Abstract

Vascular cell adhesion molecule 1 (VCAM-1) is an adhesion molecule assigned to the activated endothelium mediating immune cells adhesion and extravasation. However, its expression in renal carcinomas inversely correlates with tumor malignancy. Our experiments in clear cell renal cell carcinoma (ccRCC) cell lines demonstrated that von Hippel Lindau (VHL) loss, hypoxia, or PHD (for prolyl hydroxylase domain-containing proteins) inactivation decreased VCAM-1 levels through a transcriptional mechanism that was independent of the hypoxia-inducible factor and dependent on the nuclear factor κB signaling pathway. Conversely, VHL expression leads to high VCAM-1 levels in ccRCC, which in turn leads to better outcomes, possibly by favoring antitumor immunity through VCAM-1 interaction with the α4β1 integrin expressed in immune cells. Remarkably, in ccRCC human samples with VHL nonmissense mutations, we observed a negative correlation between VCAM-1 levels and ccRCC stage, microvascular invasion, and symptom presentation, pointing out the clinical value of VCAM-1 levels as a marker of ccRCC progression.

摘要

血管细胞黏附分子1(VCAM-1)是一种黏附分子,存在于活化的内皮细胞中,介导免疫细胞的黏附和外渗。然而,它在肾癌中的表达与肿瘤恶性程度呈负相关。我们在透明细胞肾细胞癌(ccRCC)细胞系中的实验表明,von Hippel Lindau(VHL)缺失、缺氧或脯氨酰羟化酶结构域蛋白(PHD)失活通过一种转录机制降低了VCAM-1水平,该机制独立于缺氧诱导因子且依赖于核因子κB信号通路。相反,VHL表达导致ccRCC中VCAM-1水平升高,这反过来可能通过VCAM-1与免疫细胞中表达的α4β1整合素相互作用促进抗肿瘤免疫,从而带来更好的预后。值得注意的是,在具有VHL非错义突变的ccRCC人类样本中,我们观察到VCAM-1水平与ccRCC分期、微血管侵犯和症状表现之间呈负相关,这表明VCAM-1水平作为ccRCC进展标志物的临床价值。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/9368/5350518/ae3793af52c6/JCB_201608024_Fig1.jpg

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