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算法评估 Von-Hippel Lindau 蛋白中错义突变的严重程度。

Algorithmic assessment of missense mutation severity in the Von-Hippel Lindau protein.

机构信息

Boler-Parseghian Center for Rare and Neglected Diseases, University of Notre Dame, Notre Dame, Indiana, United States of America.

Department of Biological Sciences, University of Notre Dame, Notre Dame, Indiana, United States of America.

出版信息

PLoS One. 2020 Nov 5;15(11):e0234100. doi: 10.1371/journal.pone.0234100. eCollection 2020.

Abstract

Von Hippel-Lindau disease (VHL) is an autosomal dominant rare disease that causes the formation of angiogenic tumors. When functional, pVHL acts as an E3 ubiquitin ligase that negatively regulates hypoxia inducible factor (HIF). Genetic mutations that perturb the structure of pVHL result in dysregulation of HIF, causing a wide array of tumor pathologies including retinal angioma, pheochromocytoma, central nervous system hemangioblastoma, and clear cell renal carcinoma. These VHL-related cancers occur throughout the lifetime of the patient, requiring frequent intervention procedures, such as surgery, to remove the tumors. Although VHL is classified as a rare disease (1 in 39,000 to 1 in 91,000 affected) there is a large heterogeneity in genetic mutations listed for observed pathologies. Understanding how these specific mutations correlate with the myriad of observed pathologies for VHL could provide clinicians insight into the potential severity and onset of disease. Using a select set of 285 ClinVar mutations in VHL, we developed a multiparametric scoring algorithm to evaluate the overall clinical severity of missense mutations in pVHL. The mutations were assessed according to eight weighted parameters as a comprehensive evaluation of protein misfolding and malfunction. Higher mutation scores were strongly associated with pathogenicity. Our approach establishes a novel in silico method by which VHL-specific mutations can be assessed for their severity and effect on the biophysical functions of the VHL protein.

摘要

希佩尔-林道病(VHL)是一种常染色体显性遗传的罕见疾病,可导致血管生成肿瘤的形成。在功能正常的情况下,pVHL 作为一种 E3 泛素连接酶,可负向调节缺氧诱导因子(HIF)。导致 pVHL 结构发生紊乱的基因突变会导致 HIF 失调,引起广泛的肿瘤病理,包括视网膜血管瘤、嗜铬细胞瘤、中枢神经系统血管母细胞瘤和透明细胞肾细胞癌。这些与 VHL 相关的癌症在患者的一生中都会发生,需要频繁进行干预手术以切除肿瘤。尽管 VHL 被归类为罕见疾病(每 39000 到 91000 人中就有 1 人受影响),但观察到的病理所列出的基因突变存在很大的异质性。了解这些特定的突变与 VHL 观察到的众多病理之间的相关性,可以为临床医生提供对疾病潜在严重程度和发病时间的深入了解。我们使用 VHL 中一组 285 个 ClinVar 突变,开发了一种多参数评分算法,以评估 pVHL 中错义突变的整体临床严重程度。这些突变根据八个加权参数进行评估,作为对蛋白质错误折叠和功能障碍的综合评估。较高的突变评分与致病性密切相关。我们的方法建立了一种新的计算方法,可以评估 VHL 特异性突变的严重程度及其对 VHL 蛋白生物物理功能的影响。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/f3bf/7644048/cfcf20e581bb/pone.0234100.g001.jpg

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