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- W2912942522 abstract "Summary Streptococcus pneumoniae (Spn) is a common cause of respiratory infection, but also frequently colonises the nasopharynx in the absence of disease. We used mass cytometry to study immune cells from nasal biopsy samples, collected following experimental human pneumococcal challenge, in order to identify immunological changes that follow and control spn colonisation. Using 37 markers, we characterized 293 nasal immune cell clusters, of which 7 were associated with Spn colonisation. B cell and CD8 + CD161 + T cell clusters were significantly higher in non-colonised than in colonised subjects. Spn colonization led to recirculation of not only Spn-specific but also aspecific nasal B cells. This associated with increased numbers of circulating plasmablasts and increased antibody levels against the unrelated bacterium Haemophilus influenzae . In addition, we demonstrated that baseline functionality of blood mucosal associated invariant T (MAIT) cells associated with protection against Spn. These results identify new host-pathogen interactions at the mucosa upon Spn colonisation." @default.
- W2912942522 created "2019-02-21" @default.
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- W2912942522 date "2019-02-11" @default.
- W2912942522 modified "2023-10-18" @default.
- W2912942522 title "Defining mucosal immunity using mass cytometry following experimental human pneumococcal challenge" @default.
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- W2912942522 doi "https://doi.org/10.1101/546929" @default.
- W2912942522 hasPublicationYear "2019" @default.
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