人类TMEFF1是大脑中简单疹病毒的限制因子
Yi-Hao Chan1, Zhiyong Liu2, Paul Bastard2,3,4,5
1St. Giles Laboratory of Human Genetics of Infectious Diseases, Rockefeller Branch, The Rockefeller University, New York, NY, USA. chanyihao@me.com.
Nature
|July 24, 2024
概括
TMEFF1基因中的罕见遗传变异解释了一些简单疹病毒1脑炎 (HSE) 的病例. TMEFF1作为一种保护因素,防止病毒进入大脑细胞.
科学领域:
- 神经病毒学
- 人类遗传学
- 分子生物学
背景情况:
- 简单疹病毒1 (HSV-1) 脑炎 (HSE) 是一种严重的神经疾病,许多病例无法解释.
- 了解病毒进入中枢神经系统的宿主因素对于开发有效治疗至关重要.
研究的目的:
- 调查无法解释的HSE病例的遗传基础.
- 确定限制HSV-1进入神经元的宿主因素.
主要方法:
- 对儿童HSE患者遗传变异的分析.
- 使用患者衍生细胞和CRISPR-Cas9工程干细胞进行细胞检测,以研究HSV-1的进入.
- 研究TMEFF1,NECTIN-1和HSV-1之间的相互作用.
主要成果:
- 两名与HSE无关的个体在TMEFF1基因中发现罕见的有害变异.
- 在皮层神经元中表达的TMEFF1与NECTIN-1相互作用,抑制HSV-1的进入和融合.
- TMEFF1 缺陷增加了 HSV-1 进入,核转移和神经元复制,一种由 I 型干扰素或野生型 TMEFF1 挽救的表型.
- TMEFF1的细胞外域使非神经细胞对HSV-1感染产生抗性.
结论:
- 人类TMEFF1作为HSV-1进入皮层神经元的宿主限制因子.
- 遗传的TMEFF1缺陷增加了HSV-1感染的易感性,这可能解释了一些HSE病例.
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