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Maciag, Karolina; Plumlee, Courtney R.; Cohen, Sara B.; Gern, Benjamin H.; Urdahl, Kevin B.
The Journal of immunology (1950), 08/2024, Letnik: 213, Številka: 3Journal Article
Abstract T cells producing IFN-γ have long been considered a stalwart for immune protection against Mycobacterium tuberculosis (Mtb), but their relative importance to pulmonary immunity has been challenged by murine studies that achieved protection by adoptively transferred Mtb-specific IFN-γ−/− T cells. Using IFN-γ−/− T cell chimeric mice and adoptive transfer of IFN-γ−/− T cells into TCRβ−/−δ−/− mice, we demonstrate that control of lung Mtb burden is in fact dependent on T cell–derived IFN-γ, and, furthermore, mice selectively deficient in T cell–derived IFN-γ develop exacerbated disease compared with T cell–deficient control animals, despite equivalent lung bacterial burdens. Deficiency in T cell–derived IFN-γ skews infected and bystander monocyte-derived macrophages to an alternative M2 phenotype and promotes neutrophil and eosinophil influx. Our studies support an important role for T cell–derived IFN-γ in pulmonary immunity against tuberculosis.
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Leto | Faktor vpliva | Izdaja | Kategorija | Razvrstitev | ||||
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JCR | SNIP | JCR | SNIP | JCR | SNIP | JCR | SNIP |
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in: SICRIS
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