Journal of Oral Science
Online ISSN : 1880-4926
Print ISSN : 1343-4934
ISSN-L : 1343-4934
Original
IL-1β enhances cell adhesion through laminin 5 and β4 integrin in gingival epithelial cells
Masaru MezawaYuto TsuruyaMizuho Yamazaki-TakaiHideki TakaiYohei NakayamaChristopher A. McCullochYorimasa Ogata
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2019 Volume 61 Issue 4 Pages 491-497

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Abstract

The junctional epithelium and dental enamel adhere because of hemidesmosomes containing laminin 5 and α6β4 integrin, which are important adhesion molecules in the internal basal lamina. Interleukin (IL)-1 is important in the pathogenesis of periodontal disease. IL-1β induces bone resorption by activating osteoclasts; however, its effects on adhesion of epithelial cells remain to be clarified. Laminin β3, β4 integrin, and focal adhesion kinase mRNA levels were higher after 1 h and 3 h of stimulation with IL-1β (1 ng/mL), and IL-1β, type I α1, and type IV α1 collagen mRNA levels were higher after 1 h and lower after 3 h of stimulation with IL-1β. After IL-1β stimulation, colocalization of laminin 5 and β4 integrin was increased after 1 h, colocalization of β4 integrin and plectin was increased after 1 h and decreased after 3 h, and colocalization of β4 integrin and type IV collagen was decreased after 3 h. Wound healing assays showed that IL-1β treatment (3 h) delayed wound healing. These results suggest that IL-1β enhances cell adhesion by altering localization of epithelial adhesion molecules.

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© 2019 by Nihon University School of Dentistry
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