Imbalance of Regulatory and Cytotoxic SARS-CoV-2-Reactive CD4(+) T Cells in COVID-19.

Imbalance of Regulatory and Cytotoxic SARS-CoV-2-Reactive CD4(+) T Cells in COVID-19.
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DOI:
10.1016/j.cell.2020.10.001
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发表时间:
2020-11-25
期刊:
影响因子:
64.5
通讯作者:
Vijayanand P
Vijayanand P
中科院分区:
生物学1区
文献类型:
--
作者:
Meckiff BJ;Ramírez-Suástegui C;Fajardo V;Chee SJ;Kusnadi A;Simon H;Eschweiler S;Grifoni A;Pelosi E;Weiskopf D;Sette A;Ay F;Seumois G;Ottensmeier CH;Vijayanand P

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CD 4 + T细胞对SARS-CoV-2感染的保护性或致病性免疫反应的贡献仍不清楚。在这里,我们对来自40名COVID-19患者的> 100,000个病毒抗原反应性CD 4 + T细胞进行了单细胞转录组学分析。与非住院患者相比,我们发现在住院患者中,对SARS-CoV-2反应的细胞毒性滤泡辅助细胞和细胞毒性T辅助细胞(TH)(CD 4-CTL)的比例增加,而SARS-CoV-2反应性调节性T细胞(Treg)的比例减少。重要的是,在住院的COVID-19患者中,在疾病早期观察到强烈的细胞毒性TFH反应,这与SARS-CoV-2刺突蛋白的抗体水平呈负相关。与流感反应性CD 4 + T细胞相比,多功能TH 1和TH 17细胞亚群在SARS-CoV-2反应性CD 4 + T细胞库中的代表性不足。总之,我们的分析提供了不同疾病严重程度的SARS-CoV-2反应性CD 4 + T细胞的基因表达模式的见解。对40名COVID-19患者的CD 4 + T细胞分析显示,住院治疗与细胞毒性滤泡辅助细胞和细胞毒性T辅助细胞增加以及调节性T细胞减少有关。
The contribution of CD4+ T cells to protective or pathogenic immune responses to SARS-CoV-2 infection remains unknown. Here, we present single-cell transcriptomic analysis of >100,000 viral antigen-reactive CD4+ T cells from 40 COVID-19 patients. In hospitalized patients compared to non-hospitalized patients, we found increased proportions of cytotoxic follicular helper cells and cytotoxic T helper (TH) cells (CD4-CTLs) responding to SARS-CoV-2 and reduced proportion of SARS-CoV-2-reactive regulatory T cells (TREG). Importantly, in hospitalized COVID-19 patients, a strong cytotoxic TFH response was observed early in the illness, which correlated negatively with antibody levels to SARS-CoV-2 spike protein. Polyfunctional TH1 and TH17 cell subsets were underrepresented in the repertoire of SARS-CoV-2-reactive CD4+ T cells compared to influenza-reactive CD4+ T cells. Together, our analyses provide insights into the gene expression patterns of SARS-CoV-2-reactive CD4+ T cells in distinct disease severities. Analyses of CD4+ T cells from 40 COVID-19 patients show that hospitalization is associated with increased cytotoxic follicular helper cells and cytotoxic T helper cells and a reduction in regulatory T cells.
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