在患有或没有败血症的COVID-19幸存者中,编程细胞死亡标记
Chandra Shekar Mallarpu1, Srinivasa Ikswaja Chelluri2, Tapaswi Krishna Katragadda3
1Department of Transplant Immunology and Stem Cell Lab, Global Medical Education and Research Foundation, Hyderabad, India.
Frontiers in immunology
|March 7, 2025
概括
独特的分子特征区分了COVID-19败血症的严重程度. 高分泌的编程细胞死亡 (PCD) 标记,细胞因子和MHC分子表明疾病,而细胞PCD标记在COVID-19患者中独特地识别了败血症.
科学领域:
- 免疫学 免疫学 免疫学
- 关键护理医学 关键护理医学
- 分子生物学分子生物学
背景情况:
- 败血症是导致死亡的主要原因,特别是在COVID-19患者中,通常是由于诊断延迟.
- 了解编程细胞死亡 (PCD) 机制和分子标记物对于评估COVID-19和败血症严重程度至关重要.
- 识别不同的分子特征可以改善患者分层和治疗策略.
研究的目的:
- 在COVID-19患有或没有败血症的患者中调查编程细胞死亡 (PCD) 标记物,炎症性细胞因子和MHC分子.
- 在这些患者群体中识别分辨疾病严重程度的分子特征.
- 探索评估COVID-19相关败血症的潜在生物标志物.
主要方法:
- 成年COVID-19幸存者被分为四个队伍:有败血症的COVID-19,没有败血症的COVID-19,单独的败血症和健康的对照.
- 血清和外周血液单核细胞 (PBMC) 通过ELISA和流细胞计学进行了分析.
- 评估的关键标志物包括PCD标志物 (caspase-3,caspase-1,MLKL,LC3B,p62/SQSTM1),细胞因子 (IL-1-β,IFN-gamma) 和MHC分子 (MHC I-A,MHC II-DRB1).这些标志物包括PCD标志物 (caspase-3,caspase-1,MLKL,LC3B,p62/SQSTM1),细胞因子 (IL-1-β,IFN-gamma) 和MHC分子 (MHC I-A,MHC II-DRB1).
主要成果:
- 根据疾病严重程度,确定了两个不同的分子特征.
- 在患有败血症的COVID-19和没有败血症的COVID-19队列中观察到具有高分泌PCD标志物IL-1-β,IFN-gamma,MHC I-A和MHC II-DRB1的签名.
- 第二个特征,以突出的细胞PCD标记 (caspase-1,caspase-3,MLKL,p62/SQSTM1) 为特征,与毒症队列的COVID-19具有独特的关联.
结论:
- 该研究确定了在COVID-19相关的败血症中区分免疫反应的独特分子特征.
- 这些签名可以作为有价值的生物标志物,用于评估重症监护机构的疾病严重程度.
- 这些发现可以为患有严重COVID-19和败血症的患者提供治疗干预指导.
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