降低原始细胞TCF1+T细胞与COVID-19疾病严重程度相关
Thai Hien Tu1,2,3, Ami Grunbaum4,5,6, François Santinon1,2,3
1Départment of Medicine, Universite de Montreal, Montreal, QC, H3T 1J4, Canada.
Communications biology
|May 3, 2024
概括
严重的COVID-19 (冠状病毒病2019) 损坏了关键的TCF1+原始T细胞,影响了免疫力. 这项研究确定了疾病进展的标志物和潜在的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 病毒学 病毒学
- 细胞生物学 细胞生物学
背景情况:
- COVID-19 (冠状病毒疾病2019) 与淋巴缺血有关,但T细胞枯竭的原因尚不清楚.
- 在感染期间,TCF1+原始T细胞对于补充外围T细胞至关重要.
研究的目的:
- 为了调查COVID-19进展期间T细胞子集的变化.
- 专注于TCF1+原始T细胞在COVID-19病变发生过程中的作用.
主要方法:
- 在轻度至重度的COVID-19患者中评估T细胞子集 (TCF1+,Ki67+,BcL2+,caspase-3+).
- 分析了患者血清和IL-12阻断抗体对TCF1转录的抑制.
- 在严重的情况下,与维生素D水平相关的T细胞变化.
主要成果:
- 随着COVID-19严重程度的增加,TCF1+原始T细胞 (CD4+,CD8+) 的显著下降被观察到.
- 这种下降影响了天真,记忆和效应器记忆TCF1+子集,细胞分裂 (Ki67) 和生存标记 (BcL2) 减少.
- 严重的COVID-19患者在TCF1-T细胞中表现出增加的caspase-3表达,TCF1转录被患者血清抑制,部分由IL-12调解.
结论:
- 在严重的COVID-19期间,TCF1+原始T细胞在维持免疫力方面发挥着至关重要的作用.
- 在严重的情况下,这些细胞的损失会导致免疫缺陷.
- 确定TCF1+,Ki67+,BCL2+和caspase-3+作为COVID-19严重程度和免疫状态的潜在生物标志物.
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