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Mast cells regulate homeostatic intestinal epithelial migration and barrier function by a chymase/Mcpt4-dependent mechanism
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2009 (engelsk)Inngår i: Proceedings of the National Academy of Sciences of the United States of America, ISSN 0027-8424, E-ISSN 1091-6490, Vol. 106, nr 52, s. 22381-22386Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Altered intestinal barrier function is postulated to be a central predisposing factor to intestinal diseases, including inflammatory bowel diseases and food allergies. However, the mechanisms involved in maintaining homeostatic intestinal barrier integrity remain undefined. In this study, we demonstrate that mice deficient in mast cells (Kit(W-sh/W-sh) [Wsh]) or mast cell chymase (Mcpt4(-/-)) have significantly decreased basal small intestinal permeability compared with wild-type (WT) mice. Altered intestinal barrier function was linked to decreased intestinal epithelial cell migration along the villus/crypt axis, altered intestinal morphology, and dysregulated claudin-3 crypt expression. Remarkably, engraftment of Wsh mice with WT but not Mcpt4(-/-) mast cells restored intestinal epithelial cell migration, morphology, and intestinal epithelial barrier function. Collectively, these findings identify a mechanism by which mast cells regulate homeostatic intestinal epithelial migration and barrier function.

sted, utgiver, år, opplag, sider
2009. Vol. 106, nr 52, s. 22381-22386
Emneord [en]
Homeostasis, Intestinal permeability, Mast cell protease-4
HSV kategori
Identifikatorer
URN: urn:nbn:se:uu:diva-124508DOI: 10.1073/pnas.0906372106ISI: 000273178700062PubMedID: 20018751OAI: oai:DiVA.org:uu-124508DiVA, id: diva2:317615
Tilgjengelig fra: 2010-05-04 Laget: 2010-05-04 Sist oppdatert: 2017-12-12bibliografisk kontrollert

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