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IL-4 and IL-13 inhibit IL-1 beta and TNF-alpha induced kinin B-1 and B-2 receptors through a STAT6-dependent mechanism
Umeå University, Faculty of Medicine, Department of Odontology.
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2013 (English)In: British Journal of Pharmacology, ISSN 0007-1188, E-ISSN 1476-5381, Vol. 169, no 2, 400-412 p.Article in journal (Refereed) Published
Abstract [en]

Background and Purpose Bone resorption induced by interleukin-1 (IL-1) and tumour necrosis factor (TNF-) is synergistically potentiated by kinins, partially due to enhanced kinin receptor expression. Inflammation-induced bone resorption can be impaired by IL-4 and IL-13. The aim was to investigate if expression of B1 and B2 kinin receptors can be affected by IL-4 and IL-13. Experimental Approach We examined effects in a human osteoblastic cell line (MG-63), primary human gingival fibroblasts and mouse bones by IL-4 and IL-13 on mRNA and protein expression of the B1 and B2 kinin receptors. We also examined the role of STAT6 by RNA interference and using Stat6-/- mice. Key Results IL-4 and IL-13 decreased the mRNA expression of B1 and B2 kinin receptors induced by either IL-1 or TNF- in MG-63 cells, intact mouse calvarial bones or primary human gingival fibroblasts. The burst of intracellular calcium induced by either bradykinin (B2 agonist) or des-Arg10-Lys-bradykinin (B1 agonist) in gingival fibroblasts pretreated with IL-1 was impaired by IL-4. Similarly, the increased binding of B1 and B2 ligands induced by IL-1 was decreased by IL-4. In calvarial bones from Stat6-deficient mice, and in fibroblasts in which STAT6 was knocked down by siRNA, the effect of IL-4 was decreased. Conclusions and Implications These data show, for the first time, that IL-4 and IL-13 decrease kinin receptors in a STAT6-dependent mechanism, which can be one important mechanism by which these cytokines exert their anti-inflammatory effects and impair bone resorption.

Place, publisher, year, edition, pages
2013. Vol. 169, no 2, 400-412 p.
Keyword [en]
interleukin-4, interleukin-13, interleukin-1, tumour necrosis factor-, kinin receptors, STAT6
National Category
Dentistry
Identifiers
URN: urn:nbn:se:umu:diva-71595DOI: 10.1111/bph.12116ISI: 000318234600013OAI: oai:DiVA.org:umu-71595DiVA: diva2:625768
Available from: 2013-06-05 Created: 2013-06-04 Last updated: 2017-12-06Bibliographically approved

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Souza, P. P. C.Lundberg, PernillaLerner, U. H.
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