Missense Mutations of Codon 116 in the SOD1 Gene Cause Rapid Progressive Familial ALS and Predict Short Viability With PMA Phenotype.

Missense Mutations of Codon 116 in the SOD1 Gene Cause Rapid Progressive Familial ALS and Predict Short Viability With PMA Phenotype.
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SOD1 基因中密码子 116 的错义突变导致快速进行性家族性 ALS 并预测 PMA 表型的短期生存能力

DOI:
10.3389/fgene.2021.776831
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发表时间:
2021
影响因子:
3.7
通讯作者:
Da Y
Da Y
中科院分区:
生物学3区
文献类型:
--
作者:
Wen X;Zhu W;Xia NL;Li Q;Di L;Zhang S;Chen H;Lu Y;Wang M;Xu M;Wang S;Shen XM;Lu J;Da Y

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肌萎缩性侧索硬化症(ALS)是运动神经元疾病最常见的形式,其特点是临床表现和遗传原因多种多样。先前的研究已经确定了SOD1中两种不同的错义突变(p.R116C和p.R116G)导致家族性ALS。在这项研究中,我们报道了一个遗传性ALS家族中SOD1基因(p.R116S)的新型杂合错义突变,表现为快速恶化的纯下运动神经元症状。该患者的临床表现和预后价值与先前报道的不同R116替代突变病例相似。对SOD1蛋白结构中所有R116取代的建模揭示了R116与其他两个残基之间氢键破坏的共同机制,这可能导致蛋白质展开和低聚物形成,最终赋予神经毒性。
Amyotrophic lateral sclerosis (ALS) is the most common form of motor neuron disease, characterized by a great variety of both clinical presentations and genetic causes. Previous studies had identified two different missense mutations in SOD1 (p.R116C and p.R116G) causing familial ALS. In this study, we report a novel heterozygous missense mutation in the SOD1 gene (p.R116S) in a family with inherited ALS manifested as fast-deteriorating pure lower motor neuron symptoms. The patient displayed similar clinical picture and prognostic value to previous reported cases with different R116 substitution mutations. Modeling of all R116 substitutions in the resolved SOD1 protein structure revealed a shared mechanism with destroyed hydrogen bonds between R116 and other two residues, which might lead to protein unfolding and oligomer formation, ultimately conferring neurotoxicity.
DOI: 10.1002/ana.410430604
发表时间: 1998-06-01
影响因子: 11.2
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