两名患有STAT1功能增长的儿童的致命COVID-19感染
Aidé Tamara Staines-Boone1, Pandiarajan Vignesh2, Miyuki Tsumura3
1Immunology Service at Hospital de Especialidades UMAE 25 Mexican Social Security, Institute (IMSS), Monterrey, Mexico.
Journal of clinical immunology
|December 22, 2023
概括
两名患有STAT1功能增强 (GOF) 变异的儿童死于COVID-19,患有严重并发症,如血细胞淋巴细胞细胞瘤 (HLH) 或急性呼吸衰竭. 这表明STAT1-GOF增加了致命SARS-CoV-2结局的风险.
科学领域:
- 免疫学 免疫学 免疫学
- 遗传学 是一个遗传学.
- 病毒学 病毒学
背景情况:
- 大多数儿童经历了轻微的SARS-CoV-2感染,但少数面临致命的结果.
- I型干扰素对抗SARS-CoV-2的抗病毒防御至关重要.
- 虽然干扰素反应不足可能是有害的,但过度或错误的生产也可能伤害宿主.
研究的目的:
- 研究STAT1功能增强 (GOF) 在儿童严重COVID-19结局中的作用.
- 为了识别和描述与致命的SARS-CoV-2感染相关的STAT1变异.
主要方法:
- 整体外体序列测序用于识别COVID-19死亡的两个儿科患者的STAT1变异.
- 用于功能验证,进行了干扰素马激活序列 (GAS) 和干扰素敏感响应元素 (ISRE) 报告测试.
- 免疫血栓检测证实了已识别的STAT1变异的功能获取性质.
主要成果:
- 在STAT1中,在4岁和5岁的患者中发现了两种异合体误解变异,p.E563Q和p.K344E.
- 两种变异都被证实是功能的增益 (GOF),导致IFN-α刺激后下游干扰素刺激基因 (ISG15,MX1,OAS1) 的升高调节.
- 患者1患有血细胞性淋巴细胞瘤 (HLH) 并在一周内死亡; 患者2因COVID-19肺炎和急性呼吸衰竭而死亡.
结论:
- 在SARS-CoV-2感染的背景下,STAT1 GOF变种可能会使个体容易发生灾难性的免疫反应,包括HLH和急性呼吸衰竭.
- 这些发现强调,STAT1-GOF患者有严重和致命的COVID-19并发症的风险,与大多数具有先天免疫错误的儿童观察到的一般更好的结果形成鲜明对比.
关键词:
在 COVID-19 疫情中,功能获取 - 功能获取血细胞性淋巴细胞细胞分裂.免疫的天生的错误 免疫的天生的错误这就是SARS-CoV-2病毒.这就是STAT1-GOF.病毒感染是一种病毒感染.更多相关视频
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