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Eur J Immunol. 2012 Sep;42(9):2263-73. doi: 10.1002/eji.201242598.

IL-23: one cytokine in control of autoimmunity.

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  • 1Institute of Experimental Immunology, University of Zurich, Zurich, Switzerland.


During the past decade, it has been firmly established that IL-23 is essential for disease development in several models of autoimmune disease, including psoriatic skin inflammation, inflammatory bowel disease (IBD), and experimental autoimmune encephalomyelitis (EAE). The mechanism by which IL-23 exerts its pathogenic role has been mostly scrutinized in the context of Th17 cells, which were thought to mediate autoimmunity by secretion of IL-17 family cytokines. However, the picture emerging now is one of multiple IL-23-responsive cell types, pro-inflammatory cytokine induction, and pathogenic "licensing" following an IL-23-dominated interaction between the T cell and the antigen-presenting cell (APC). This review will focus on our changing view of IL-23-dependent autoimmune pathologies with a particular emphasis on the responder cells and their IL-23-induced factors that ultimately mediate tissue destruction.

© 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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