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Classical dendritic cells are required for dietary antigen-mediated peripheral regulatory T cell and tolerance induction I

ABSTRACT: Oral tolerance prevents pathological inflammatory responses towards innocuous foreign antigens via peripheral regulatory T cells (pTreg cells). However, whether a particular subset of antigen-presenting cells (APCs) is required during dietary antigen exposure to instruct naïve CD4+ T cells to differentiate into pTreg cells has not been defined. Using myeloid lineage-specific APC depletion in mice, we found that monocyte-derived APCs are dispensable, while classical dendritic cells (cDCs) are critical for pTreg cell induction and oral tolerance. CD11b¬– cDCs from the gut-draining lymph nodes efficiently induced pTreg cells, and conversely, loss of IRF8-dependent CD11b– cDCs impaired their polarization, although oral tolerance remained intact. These data reveal the hierarchy of cDC subsets in pTreg cell induction and their redundancy during oral tolerance development. Four dendritic cell subpopulations from mouse mesenteric lymphnodes were sorted and compared in their gene expression profile

ORGANISM(S): Mus Musculus

SUBMITTER: Daniel Mucida   Daria Esterházy  Mariya London  Thiago Y Oliveira  Jakob Loschko  Veronica Jove 

PROVIDER: E-GEOD-77303 | ArrayExpress | 2016-03-28



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