Peripheral and lung resident memory T cell responses against SARS-CoV-2
Resident memory T cells (T) positioned within the respiratory tract are probably required to limit SARS-CoV-2 spread and COVID-19. Importantly, T are mostly non-recirculating, which reduces the window of opportunity to examine these cells in the blood as they move to the lung parenchyma. Here, we id...
| Autores: | , , , , , , , , , , , , , , , , , , , , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2021 |
| País: | España |
| Institución: | Universitat Autònoma de Barcelona |
| Repositorio: | Dipòsit Digital de Documents de la UAB |
| Idioma: | inglés |
| OAI Identifier: | oai:ddd.uab.cat:255590 |
| Acceso en línea: | https://ddd.uab.cat/record/255590 https://dx.doi.org/urn:doi:10.1038/s41467-021-23333-3 |
| Access Level: | acceso abierto |
| Palabra clave: | Cellular immunity Cytokines Viral infection Mucosal immunology Infectious diseases |
| Sumario: | Resident memory T cells (T) positioned within the respiratory tract are probably required to limit SARS-CoV-2 spread and COVID-19. Importantly, T are mostly non-recirculating, which reduces the window of opportunity to examine these cells in the blood as they move to the lung parenchyma. Here, we identify circulating virus-specific T cell responses during acute infection with functional, migratory and apoptotic patterns modulated by viral proteins and associated with clinical outcome. Disease severity is associated predominantly with IFNγ and IL-4 responses, increased responses against S peptides and apoptosis, whereas non-hospitalized patients have increased IL-12p70 levels, degranulation in response to N peptides and SARS-CoV-2-specific CCR7 + T cells secreting IL-10. In convalescent patients, lung-T are frequently detected even 10 months after initial infection, in which contemporaneous blood does not reflect tissue-resident profiles. Our study highlights a balanced anti-inflammatory antiviral response associated with a better outcome and persisting T cells as important for future protection against SARS-CoV-2 infection. Lung resident memory T (T) cells are important for protection from viral infection in the lungs. Here the authors use paired lung biopsy material and blood to characterize T cell responses in patients with COVID-19 over time and find persistence of antiviral lung T cells that might be important to limit reinfection. |
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