Human CD8+ T cell cross-reactivity across influenza A, B and C viruses.
Nat Immunol
; 20(5): 613-625, 2019 05.
Article
em En
| MEDLINE
| ID: mdl-30778243
ABSTRACT
Influenza A, B and C viruses (IAV, IBV and ICV, respectively) circulate globally and infect humans, with IAV and IBV causing the most severe disease. CD8+ T cells confer cross-protection against IAV strains, however the responses of CD8+ T cells to IBV and ICV are understudied. We investigated the breadth of CD8+ T cell cross-recognition and provide evidence of CD8+ T cell cross-reactivity across IAV, IBV and ICV. We identified immunodominant CD8+ T cell epitopes from IBVs that were protective in mice and found memory CD8+ T cells directed against universal and influenza-virus-type-specific epitopes in the blood and lungs of healthy humans. Lung-derived CD8+ T cells displayed tissue-resident memory phenotypes. Notably, CD38+Ki67+CD8+ effector T cells directed against novel epitopes were readily detected in IAV- or IBV-infected pediatric and adult subjects. Our study introduces a new paradigm whereby CD8+ T cells confer unprecedented cross-reactivity across all influenza viruses, a key finding for the design of universal vaccines.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Vírus da Influenza A
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Vírus da Influenza B
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Gammainfluenzavirus
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Linfócitos T CD8-Positivos
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Reações Cruzadas
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Influenza Humana
Tipo de estudo:
Prognostic_studies
Limite:
Adolescent
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Adult
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Aged
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Animals
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Child
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Female
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Humans
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Male
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Middle aged
Idioma:
En
Ano de publicação:
2019
Tipo de documento:
Article