2021
DOI: 10.1038/s41590-021-01095-w
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Prolonged activation of nasal immune cell populations and development of tissue-resident SARS-CoV-2-specific CD8+ T cell responses following COVID-19

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Cited by 81 publications
(50 citation statements)
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“…Immunogenetics of RA suggested that RA was closely associated with the regulation of T cell activation, which was ultimately determined by positive signals from costimulatory molecules and negative signals from regulatory T cells ( 47 , 48 ). The phenotype of the SARS-CoV-2-specific CD8+ T cells, revealed a strong T cell activation in COVID-19 patients, T cells exhibited a more robust activation profile in severe disease than in mild disease ( 49 , 50 ). In the cellular component experiment, MHC class II protein complex (5 genes) and MHC protein complex (5 genes) were two major GO pathways.…”
Section: Discussionmentioning
confidence: 99%
“…Immunogenetics of RA suggested that RA was closely associated with the regulation of T cell activation, which was ultimately determined by positive signals from costimulatory molecules and negative signals from regulatory T cells ( 47 , 48 ). The phenotype of the SARS-CoV-2-specific CD8+ T cells, revealed a strong T cell activation in COVID-19 patients, T cells exhibited a more robust activation profile in severe disease than in mild disease ( 49 , 50 ). In the cellular component experiment, MHC class II protein complex (5 genes) and MHC protein complex (5 genes) were two major GO pathways.…”
Section: Discussionmentioning
confidence: 99%
“…Resident memory CD8+ T C cells specific to influenza virus are found in the nasal mucosa after a resolved infection, and these efficiently control a second infection with the influenza virus [ 20 , 67 ]. Resident memory CD8+ T C cells specific for SARS-CoV-2 persist in the nasal mucosa for at least two months after recovery from COVID-19 [ 68 ], and it seems likely that, analogous to influenza, they help resolve the infection in the URT and provide protective immunity in subsequent exposure to the virus.…”
Section: Urt Immunity After Sars-cov-2 Infectionmentioning
confidence: 99%
“…Other groups have noted lasting changes in the T and B cell populations in the peripheral blood of adults months after COVID-19 [40][41][42] ; a recent analysis of immune cells in the nasal mucosa also revealed enrichment of activated CD38 + CD8 + TRM and CD127 + granulocytes weeks after acute infection 43 . In our analysis of both upper respiratory tissue and peripheral blood, we see prominent changes in tonsils and adenoids compared to peripheral blood, providing evidence for tissue-specific anti-viral immune responses.…”
Section: Discussionmentioning
confidence: 98%