Abstract
Dysregulated immune responses against the SARS-CoV-2 virus are instrumental in severe COVID-19. However, the immune signatures associated with immunopathology are poorly understood. Here we use multi-omics single-cell analysis to probe the dynamic immune responses in hospitalized patients with stable or progressive course of COVID-19, explore V(D)J repertoires, and assess the cellular effects of tocilizumab. Coordinated profiling of gene expression and cell lineage protein markers shows that S100Ahi/HLA-DRlo classical monocytes and activated LAG-3hi T cells are hallmarks of progressive disease and highlights the abnormal MHC-II/LAG-3 interaction on myeloid and T cells, respectively. We also find skewed T cell receptor repertories in expanded effector CD8+ clones, unmutated IGHG+ B cell clones, and mutated B cell clones with stable somatic hypermutation frequency over time. In conclusion, our in-depth immune profiling reveals dyssynchrony of the innate and adaptive immune interaction in progressive COVID-19.
© 2022. The Author(s).
Publication types
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Research Support, N.I.H., Extramural
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Research Support, Non-U.S. Gov't
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Research Support, U.S. Gov't, P.H.S.
MeSH terms
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Adaptive Immunity / drug effects
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Adaptive Immunity / genetics
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Adaptive Immunity / immunology*
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Aged
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Antibodies, Monoclonal, Humanized / therapeutic use
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CD4-Positive T-Lymphocytes / drug effects
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CD4-Positive T-Lymphocytes / immunology
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CD4-Positive T-Lymphocytes / metabolism
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CD8-Positive T-Lymphocytes / drug effects
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CD8-Positive T-Lymphocytes / immunology
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CD8-Positive T-Lymphocytes / metabolism
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COVID-19 / genetics
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COVID-19 / immunology*
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COVID-19 Drug Treatment
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Cells, Cultured
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Female
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Gene Expression Profiling / methods*
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Gene Expression Regulation / drug effects
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Gene Expression Regulation / immunology
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Humans
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Immunity, Innate / drug effects
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Immunity, Innate / genetics
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Immunity, Innate / immunology*
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Male
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RNA-Seq / methods
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Receptors, Antigen, B-Cell / genetics
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Receptors, Antigen, B-Cell / immunology
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Receptors, Antigen, T-Cell / genetics
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Receptors, Antigen, T-Cell / immunology
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SARS-CoV-2 / drug effects
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SARS-CoV-2 / immunology*
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SARS-CoV-2 / physiology
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Single-Cell Analysis / methods*
Substances
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Antibodies, Monoclonal, Humanized
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Receptors, Antigen, B-Cell
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Receptors, Antigen, T-Cell
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tocilizumab