与SARS-CoV-2相关的T细胞透到中枢神经系统
Malte Mohme1, Christoph Schultheiß2,3, Andras Piffko1
1Department of Neurosurgery University Medical Centre Hamburg-Eppendorf Hamburg Germany.
Clinical & translational immunology
|February 2, 2024
概括
严重急性呼吸系统综合征冠状病毒2 (SARS-CoV-2) T细胞在致命的COVID-19病例中透到大脑. 这些特定于病毒的T细胞在大多数大脑区域都存在,特别是嗅球,髓和小脑.
科学领域:
- 神经学 神经学
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
背景情况:
- 冠状病毒疾病2019 (COVID-19),由SARS-CoV-2引起,主要是一种呼吸系统疾病,但可能导致神经症状.
- COVID-19神经病变的确切机制,包括T细胞在中枢神经系统 (CNS) 中的作用,尚未完全理解.
- 由病毒感染或炎症性细胞因子引发的内皮功能障碍是疑似导致神经复杂症的因素.
研究的目的:
- 研究COVID-19死亡患者在不同解剖学大脑区域内T细胞的存在和特征.
- 为了确定大脑中发现的T细胞是否表现出SARS-CoV-2的特异性.
主要方法:
- 来自已故COVID-19患者的不同解剖学大脑区域的分析.
- 在脑组织上进行了T细胞受体Vβ谱系测序.
- 克隆型被分析为SARS-CoV-2协会使用公共TCR剧目数据.
主要成果:
- 在致命的COVID-19患者的几乎所有分析的大脑区域中检测到与SARS-CoV-2相关的T细胞.
- 嗅球,髓和小脑表现出 SARS-CoV-2 特定的 T 细胞序列模式的最高流行率.
- 神经病理学检查显示CD8+T细胞的初级透,主要以周围血管模式.
结论:
- 这项研究表明,在致命的COVID-19之后,SARS-CoV-2特异性T细胞透到大脑中的广泛传播.
- 需要进一步研究,以阐明T细胞透与COVID-19患者神经症状和长期认知影响的发展之间的确切关系.
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