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The novel interleukin-1 cytokine family members in inflammatory diseases

Hahn, Madelaine; Frey, Silke; Hueber, Axel J.

Current Opinion in Rheumatology: March 2017 - Volume 29 - Issue 2 - p 208–213
doi: 10.1097/BOR.0000000000000361
IMMUNOPATHOGENESIS AND TREATMENT OF AUTOIMMUNE DISEASES: Edited by Iain McInnes
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Purpose of review This review provides an update on the new interleukin-1 (IL-1) cytokine family members in inflammatory diseases with focus on recent findings concerning the family members IL-36, IL-37, and IL-38 and their different expression patterns.

Recent findings The IL-1 cytokines are known to be involved in many different inflammatory and autoimmune diseases. The latest IL-1 family members, IL-36, IL-37, and IL-38 have been shown to be differently regulated during course of disease. Studies of patients suffering from inflammatory diseases revealed that those cytokines are upregulated in the serum as well as in inflamed tissue. Both, epithelial cells and infiltrating peripheral mononuclear blood cells serve as source of the cytokines IL-36, IL-37, and IL-38 triggering different outcomes. These results could be confirmed in different mouse models and in-vitro and ex-vivo studies.

Summary IL-36, IL-37, and IL-38 are involved in the pathogenesis of the inflammatory diseases psoriasis, rheumatoid arthritis, gout, systemic lupus erythematosus as well as Crohn's disease. Thereby IL-36 acts proinflammatory triggering further inflammatory mediators. In contrast, IL-37 and IL-38 are upregulated to counteract. Understanding the imbalance of the IL-1 family is crucial for future therapeutics.

Department of Internal Medicine 3 and Institute for Clinical Immunology, Friedrich-Alexander University Erlangen-Nürnberg, Erlangen, Germany

Correspondence to Dr Axel J. Hueber, MD, PhD, Department of Internal Medicine 3 and Institute for Clinical Immunology, Friedrich-Alexander University Erlangen-Nürnberg, Universitätsstr. 25a, 90154 Erlangen, Germany. Tel: +49 9131 8543036; fax: +49 9131 8535784; e-mail: axel.hueber@uk-erlangen.de

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