IFN-γ limits Th9-mediated autoimmune inflammation through dendritic cell modulation of IL-27.

IFN-g Limits Th9-Mediated Autoimmune Inflammation through Dendritic Cell Modulation of IL-27

Identification of an IL-27/osteopontin axis in dendritic cells and its modulation by IFN-gamma limits IL-17-mediated autoimmune inflammation.

Dendritic cells (DCs) play a central role in determining the induction of T cell responses. IL-27 production by DCs favors induction of IL-10-producing regulatory T cells, whereas osteopontin (OPN) promotes pathogenic IL-17 T cell responses. The regulatory mechanisms in DCs that control these two cells types are not understood well. Here, we show that IFN-gamma induces IL-27 while inhibiting OP...

مروری بر نقش زیرگروه‌های لنفوسیت‌های T در پاتوژنز بیماری مولتیپل اسکلروزیس

Background and Objectives: Multiple sclerosis (MS) is an autoimmune neurodegenerative disease of the central nervous system (CNS). Although, the contribution of various cells such as  B cells, CD8+ T cells, microglia/macrophages, dendritic cells, asterocytes and mast cells in the pathogenesis of MS have been demonstrated, however, it seems that autoreactive myelin specific CD4+ T cells pla...

NK-DC crosstalk controls the autopathogenic Th17 response through an innate IFN-γ–IL-27 axis

IFN-γ is a pathogenic cytokine involved in inflammation. Paradoxically, its deficiency exacerbates experimental autoimmune encephalomyelitis, uveitis, and arthritis. Here, we demonstrate using IFN-γ(-/-) mice repleted with IFN-γ +/+: NK cells that innate production of IFN-γ from NK cells is necessary and sufficient to trigger an endogenous regulatory circuit that limits autoimmunity. After immu...

Retinoic acid-primed human dendritic cells inhibit Th9 cells and induce Th1/Th17 cell differentiation.

All-trans-retinoic acid plays a central role in mucosal immunity, where it promotes its synthesis by up-regulating CD103 expression on dendritic cells, induces gut tropic (α4β7(+) and CCR9(+)) T cells, and inhibits Th1/Th17 differentiation. Recently, murine studies have highlighted the proinflammatory role of retinoic acid in maintaining inflammation under a variety of pathologic conditions. Ho...