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TNF-a+ CD4+ T cells dominate the SARS-CoV-2 specific T cell response in COVID-19 outpatients and are associated with durable antibodies
Journal article   Open access   Peer reviewed

TNF-a+ CD4+ T cells dominate the SARS-CoV-2 specific T cell response in COVID-19 outpatients and are associated with durable antibodies

Kattria van der Ploeg, Adam S. Kirosingh, Diego A. M. Mori, Saborni Chakraborty, Zicheng Hu, Benjamin L. Sievers, Karen B. Jacobson, Hector Bonilla, Julie Parsonnet, Jason R. Andrews, …
Cell reports. Medicine, Vol.3(6), 100640
06/21/2022
DOI: 10.1016/j.xcrm.2022.100640
PMID: 35588734
url
https://doi.org/10.1016/j.xcrm.2022.100640View
Published (Version of record) Open Access

Abstract

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)-specific CD4(+) T cells are likely important in immunity against coronavirus 2019 (COVID-19), but our understanding of CD4(+) longitudinal dynamics following infection and of specific features that correlate with the maintenance of neutralizing antibodies remains limited. Here, we characterize SARS-CoV-2-specific CD4(+)T cells in a longitudinal cohort of 109 COVID19 outpatients enrolled during acute infection. The quality of the SARS-CoV-2-specific CD4(+) response shifts from cells producing interferon gamma (IFN gamma) to tumor necrosis factor alpha (TNF-alpha) from 5 days to 4 months post-enrollment, with IFN gamma-IL-21-TNF-alpha(+) CD4(+) T cells the predominant population detected at later time points. Greater percentages of IFN gamma-IL-21-TNF-alpha(+) CD4(+)T cells on day 28 correlate with SARS-CoV-2-neutralizing antibodies measured 7 months post-infection (? = 0.4, p = 0.01). mRNA vaccination following SARS-CoV-2 infection boosts both IFN gamma- and TNF-alpha-producing, spike-protein-specific CD4(+) T cells. These data suggest that SARS-CoV-2-specific, TNF-alpha-producing CD4(+) T cells may play an important role in antibody maintenance following COVID-19.
Cell Biology Life Sciences & Biomedicine Medicine, Research & Experimental Research & Experimental Medicine Science & Technology

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