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Deprecated: Implicit conversion from float 261.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Immunity 2014 ; 40 (5): 706-19 Nephropedia Template TP
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Interleukin-10 Receptor Signaling in Innate Immune Cells Regulates Mucosal Immune Tolerance and Anti-Inflammatory Macrophage Function #MMPMID24792912
Immunity 2014[May]; 40 (5): 706-19 PMID24792912show ga
Intact interkeulin-10 receptor (IL-10R) signaling on effector and regulatory T (Treg) cells are each independently required to maintain immune tolerance. Here we show that IL-10 sensing by innate immune cells, independent of its effects on T cells, was critical for regulating mucosal homeostasis. Following wild-type CD4+ T cell transfer, Rag2?/?Il10rb?/? mice developed severe colitis in association with profound defects in generation and function of Treg cells. Moreover, loss of IL-10R signaling impaired the generation and function of anti-inflammatory intestinal and bone marrow-derived macrophages, and their ability to secrete IL-10. Importantly, transfer of wild-type but not Il10rb?/? anti-inflammatory macrophages ameliorated colitis induction by wild-type CD4+ T cells in Rag2?/?Il10rb?/? mice. Similar alterations in the generation and function of anti-inflammatory macrophages were observed in IL-10R-deficient patients with very early-onset inflammatory bowel disease. Collectively, our studies define innate immune IL-10R signaling as a key factor regulating mucosal immune homeostasis in mice and humans.