The Journal of Nihon University School of Dentistry IL-1β enhances cell adhesion through laminin 5 and β4 integrin in gingival epithelial cells

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Author(s)

    • Mezawa Masaru
    • Department of Periodontology, Nihon University School of Dentistry at Matsudo|Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo
    • Tsuruya Yuto
    • Department of Periodontology, Nihon University School of Dentistry at Matsudo
    • Takai Hideki
    • Department of Periodontology, Nihon University School of Dentistry at Matsudo|Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo
    • Nakayama Yohei
    • Department of Periodontology, Nihon University School of Dentistry at Matsudo|Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo
    • Ogata Yorimasa
    • Department of Periodontology, Nihon University School of Dentistry at Matsudo|Research Institute of Oral Science, Nihon University School of Dentistry at Matsudo

Abstract

<p>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.</p>

Journal

  • Journal of Oral Science

    Journal of Oral Science, 2019

    Nihon University School of Dentistry

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