Role of CD4 T cell helper subsets in immune response and deviation of CD8 T cells in mice* |
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| Authors: | Alison Hogg Yongjun Sui Shlomo Z. Ben‐Sasson William E. Paul Jay A. Berzofsky |
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| Affiliation: | 1. Vaccine Branch, Center for Cancer ResearchNational Cancer Institute;2. Laboratory of Immunology, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD, USA;3. Lautenberg Center for General and Tumor Immunology, Hebrew University‐Hadassah Medical Center, Jerusalem, Israel |
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| Abstract: | The ability of different CD4+ T cell subsets to help CD8+ T‐cell response is not fully understood. Here, we found using the murine system that Th17 cells induced by IL‐1β, unlike Th1, were not effective helpers for antiviral CD8 responses as measured by IFNγ‐producing cells or protection against virus infection. However, they skewed CD8 responses to a Tc17 phenotype. Thus, the apparent lack of help was actually immune deviation. This skewing depended on both IL‐21 and IL‐23. To overcome this effect, we inhibited Th17 induction by blocking TGF‐β. Anti‐TGF‐β allowed the IL‐1β adjuvant to enhance CD8+ T‐cell responses without skewing the phenotype to Tc17, thereby providing an approach to harness the benefit of common IL‐1‐inducing adjuvants like alum without immune deviation. |
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| Keywords: | IFN‐γ IL‐1 Immune deviation Tc17 TGF‐β Th1 Th17 |
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