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简单疹脑炎是由于E3泛素酶的突变引起的

Stéphanie Bibert¹, Mathieu Quinodoz^2,3,4, Sylvain Perriot⁵

¹Infectious Diseases Service, Department of Medicine, University Hospital and University of Lausanne, Lausanne, Switzerland.

Nature communications

|May 10, 2024

概括

在一个患有简单疹脑炎的儿童身上,发现了一种罕见的WWP2基因基因变异. 这种突变会损害抗病毒免疫力,增加对HSV-1感染的易感性.

科学领域:

免疫学免疫学免疫学
遗传学遗传学是一个
神经科学是一个神经科学.

背景情况:

简单疹病毒1型 (HSV-1) 可以引起罕见的,严重的脑炎.
影响HSV-1脑炎易感性的遗传因素尚未完全理解.

研究的目的:

在儿童患者中调查简单疹脑炎的遗传基础.
描述一种新的WWP2基因变异对抗病毒免疫力的功能影响.

主要方法:

全基因组基因分析以识别变异.
利用诱导多能干细胞衍生的神经前体细胞和神经元.
评估了托尔类受体3 (TLR3) 信号传递和HSV-1易感性.
研究了TRIF的无处不在和使用CRISPR-Cas9基因编辑.

主要成果:

在患有HSV-1脑炎的患者中鉴定了一种罕见的异构性WWP2变体 (p.R841H).
这种p.R841H变种损害了TLR3介导的信号传递,并增加了神经元对HSV-1的敏感性.
这种变异增强了TRIF无处可见性,并降低了抗病毒免疫力,这种免疫力通过CRISPR-Cas9校正恢复.

结论:

已识别的WWP2 p.R841H变种与抗病毒免疫力受损和对HSV-1脑炎的敏感性增加有关.
WWP2在神经细胞中调节TLR3介导的抗病毒反应中起着至关重要的作用.
这一发现突出了对严重的HSV-1感染的潜在遗传倾向.

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