alexa Induced recruitment of NK cells to lymph nodes provides IFN-gamma for T(H)1 priming.
Immunology

Immunology

Immunome Research

Author(s): MartnFontecha A, Thomsen LL, Brett S, Gerard C, Lipp M, , MartnFontecha A, Thomsen LL, Brett S, Gerard C, Lipp M,

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Abstract Naive T cells are stimulated by antigen-presenting dendritic cells (DCs) in secondary lymphoid organs, but whether other types of cell participate in T cell priming is unclear. Here we show in mice that natural killer (NK) cells, which are normally excluded from lymph nodes, are rapidly recruited in a CCR7-independent, CXCR3-dependent manner to lymph nodes on stimulation by the injection of mature DCs. Recruitment of NK cells is also induced by some, but not all, adjuvants and correlates with the induction of T helper cell type 1 (T(H)1) responses. NK cell depletion and reconstitution experiments show that NK cells provide an early source of interferon-gamma (IFN-gamma) that is necessary for T(H)1 polarization. Taken together, our results identify an induced pathway of NK cell migration in antigen-stimulated lymph nodes and a mechanism by which some adjuvants may facilitate T(H)1 responses. This article was published in Nat Immunol and referenced in Immunome Research

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