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Antimicrobial peptide modulation in a differentiated reconstructed gingival epithelium

机译:分化的牙龈上皮细胞中的抗菌肽调节

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摘要

Gingival innate immunity has been studied by using biopsies and normal or transformed epithelial cell monolayers. To overcome individual biological variabilities and as a physiological alternative, we have proposed using a reconstructed tissue equivalent. In this study, we investigated the functionality and the stage of differentiation of a reconstructed human gingival epithelium. We also characterized this epithelium at the molecular level to investigate its differentiation stage compared with native human gingival epithelium. The expression levels and localization of markers related to proteins and lipids of well-differentiated stratified epithelium, such as cytokeratins, cornified envelope proteins and enzymes, or to factors in lipid synthesis and trafficking were examined. Immunohistochemistry revealed similar localization patterns in both types of epithelia and mRNA quantification showed a close resemblance of their expression profiles. We further revealed that, like native gingiva, reconstructed gingival epithelium was able to respond to pro-inflammatory or lipopolysaccharide stimuli by producing antimicrobial peptides hβD-2, hβD-3 or LL-37. Finally, we demonstrated that reconstructed human gingival epithelium, as a model, was good enough to be proposed as a functional equivalent for native human gingival epithelium in order to study the regulation of gingival innate immunity against periodontal infections.
机译:已经通过使用活检和正常或转化的上皮细胞单层研究了牙龈先天免疫。为了克服个体的生物变异性并作为一种生理选择,我们提出了使用重建的组织等效物。在这项研究中,我们调查了重建的人类牙龈上皮细胞的功能和分化阶段。我们还在分子水平上表征了该上皮以研究其与天然人牙龈上皮相比的分化阶段。检查了与高度分化的分层上皮的蛋白质和脂质相关的标志物的表达水平和定位,例如细胞角蛋白,角质化的包膜蛋白和酶,或与脂质合成和运输相关的因子。免疫组织化学显示,在两种类型的上皮细胞中都存在相似的定位模式,而mRNA定量显示其表达谱非常相似。我们进一步揭示,与天然牙龈一样,重建的牙龈上皮能够通过产生抗菌肽hβD-2,hβD-3或LL-37来响应促炎性或脂多糖刺激。最后,我们证明了重建的人牙龈上皮作为模型足够好,可以被提议作为天然人牙龈上皮的功能等同物,以研究对牙周感染的牙龈先天免疫的调节。

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  • 来源
    《Cell and Tissue Research》 |2007年第1期|85-95|共11页
  • 作者单位

    Laboratoire de Biologie Cellulaire Cutanée/IRPF Hotel Dieu 2 Rue Viguerie 31025 Toulouse France;

    Laboratoire de Biologie Cellulaire Cutanée/IRPF Hotel Dieu 2 Rue Viguerie 31025 Toulouse France;

    Pierre Fabre Oral Care Pierre Fabre Santé 29 Avenue du Sidobre 81106 Castres France;

    Laboratoire de Biologie Cellulaire Cutanée/IRPF Hotel Dieu 2 Rue Viguerie 31025 Toulouse France;

    Laboratoire de Physio-Pathologie et Thérapeutiques Bucco-Dentaires Université Paul Sabatier Toulouse III Toulouse France;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Organotypic; Gingiva; Beta-defensins; Terminal differentiation; Innate immunity; Human;

    机译:器官型;牙龈;β-防御素;末端分化;先天免疫;人类;

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