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Interleukin 18-independent engagement of interleukin 18 receptor-alpha is required for autoimmune inflammation.


Gutcher, I; Urich, E; Wolter, K; Prinz, M; Becher, B (2006). Interleukin 18-independent engagement of interleukin 18 receptor-alpha is required for autoimmune inflammation. Nature Immunology, 7(9):946-953.

Abstract

T helper type 1 (T(H)1) lymphocytes are considered to be the main pathogenic cell type responsible for organ-specific autoimmune inflammation. As interleukin 18 (IL-18) is a cofactor with IL-12 in promoting T(H)1 cell development, we examined the function of IL-18 and its receptor, IL-18R, in autoimmune central nervous system inflammation. Similar to IL-12-deficient mice, IL-18-deficient mice were susceptible to experimental autoimmune encephalomyelitis. In contrast, IL-18R alpha-deficient mice were resistant to experimental autoimmune encephalomyelitis, indicating involvement of an IL-18R alpha ligand other than IL-18 with encephalitogenic properties. Moreover, engagement of IL-18R alpha on antigen-presenting cells was required for the generation of pathogenic IL-17-producing T helper cells. Thus, IL-18 and T(H)1 cells are dispensable, whereas IL-18R alpha and IL-17-producing T helper cells are required, for autoimmune central nervous system inflammation.

Abstract

T helper type 1 (T(H)1) lymphocytes are considered to be the main pathogenic cell type responsible for organ-specific autoimmune inflammation. As interleukin 18 (IL-18) is a cofactor with IL-12 in promoting T(H)1 cell development, we examined the function of IL-18 and its receptor, IL-18R, in autoimmune central nervous system inflammation. Similar to IL-12-deficient mice, IL-18-deficient mice were susceptible to experimental autoimmune encephalomyelitis. In contrast, IL-18R alpha-deficient mice were resistant to experimental autoimmune encephalomyelitis, indicating involvement of an IL-18R alpha ligand other than IL-18 with encephalitogenic properties. Moreover, engagement of IL-18R alpha on antigen-presenting cells was required for the generation of pathogenic IL-17-producing T helper cells. Thus, IL-18 and T(H)1 cells are dispensable, whereas IL-18R alpha and IL-17-producing T helper cells are required, for autoimmune central nervous system inflammation.

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Additional indexing

Item Type:Journal Article, refereed, original work
Communities & Collections:04 Faculty of Medicine > University Hospital Zurich > Clinic for Neurology
Dewey Decimal Classification:610 Medicine & health
Language:English
Date:September 2006
Deposited On:11 Feb 2008 12:12
Last Modified:05 Apr 2016 12:12
Publisher:Nature Publishing Group
ISSN:1529-2908
Publisher DOI:https://doi.org/10.1038/ni1377
PubMed ID:16906165

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