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Annual Review of Immunology

Volume 33, 2015

Interleukin-22: Immunobiology and Pathology

Abstract

Interleukin-22 (IL-22) is a recently described IL-10 family cytokine that is produced by T helper (Th) 17 cells, γδ T cells, NKT cells, and newly described innate lymphoid cells (ILCs). Knowledge of IL-22 biology has evolved rapidly since its discovery in 2000, and a role for IL-22 has been identified in numerous tissues, including the intestines, lung, liver, kidney, thymus, pancreas, and skin. IL-22 primarily targets nonhematopoietic epithelial and stromal cells, where it can promote proliferation and play a role in tissue regeneration. In addition, IL-22 regulates host defense at barrier surfaces. However, IL-22 has also been linked to several conditions involving inflammatory tissue pathology. In this review, we assess the current understanding of this cytokine, including its physiologic and pathologic effects on epithelial cell function.

Keyword(s): epithelial cells, interleukin-22, tissue regeneration
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/content/journals/10.1146/annurev-immunol-032414-112123
2015-03-21
2024-04-19
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Interleukin-22: Immunobiology and Pathology
Annual Review of Immunology 33, 747 (2015); https://doi.org/10.1146/annurev-immunol-032414-112123
/content/journals/10.1146/annurev-immunol-032414-112123
/content/journals/10.1146/annurev-immunol-032414-112123
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