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Eur J Immunol. 2012 Sep;42(9):2322-8. doi: 10.1002/eji.201142227. Epub 2012 Jul 27.

IL-13-producing Th1 and Th17 cells characterize adaptive responses to both self and foreign antigens.

Author information

1
Department of Pathology, University of California San Francisco, San Francisco, CA, USA.

Abstract

In helper T cells, IL-13 is traditionally considered a Th2-type cytokine that is coexpressed with IL-4. Using mouse models of immunization and autoimmunity, we demonstrate that IL-13 is frequently uncoupled from IL-4, and that it can be produced by both IFN-γ(+) Th1 cells and IL-17(+) Th17 cells. We report that these IL-13-producing Th1 and Th17 cells are distinct from classical IL-4(+) Th2 cells and that they are relatively common, appearing in the context of both protective and pathogenic T-cell responses. We also demonstrate that IL-13 and Th2-type cytokines can have important consequences in Th1- and Th17-dominated settings, such as lymphopenia-induced autoimmune disease, where they can be either pro- or anti-inflammatory, depending on whether they act on innate or adaptive immune cells. Taken together, our studies indicate that IL-13 production is more widespread than previously appreciated and that blocking this cytokine may have therapeutic benefits even in settings where traditional IL-4-driven Th2-type responses are not evident.

PMID:
22684943
PMCID:
PMC3811006
DOI:
10.1002/eji.201142227
[Indexed for MEDLINE]
Free PMC Article

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