J Periodontol:糖化胶原刺激牙龈成纤维细胞的分化

2017-08-31 MedSci MedSci原创

葡萄糖衍生的代谢物可能改变牙周膜中重要蛋白质的结构和生物学特性,如胶原蛋白。因此,胶原结合细胞可能改变其表型性状。虽然在牙周病变中可以检测到葡萄糖衍生物甲基乙二醛(MGO),胶质糖化对牙龈结缔组织生物学的精确影响尚未完全了解。本研究评估了MGO胶原糖化是否可能影响人类牙龈成纤维细胞(HGFs)的表型性质和重构能力。

葡萄糖衍生的代谢物可能改变牙周膜中重要蛋白质的结构和生物学特性,如胶原蛋白。因此,胶原结合细胞可能改变其表型性状。虽然在牙周病变中可以检测到葡萄糖衍生物甲基乙二醛(MGO),胶质糖化对牙龈结缔组织生物学的精确影响尚未完全了解。本研究评估了MGO胶原糖化是否可能影响人类牙龈成纤维细胞(HGFs)的表型性质和重构能力。

方法:在用MGO处理的I型胶原基质上原代培养HGFs。测试细胞培养物的细胞活力,凋亡,α-平滑肌肌动蛋白(SMA),纤连蛋白(FN)产生和胶原重塑。使用流变仪和原子力显微镜评估了MGO处理的胶原凝胶的机械性能和形态。使用Kruskal-Wallis和Mann-Whitney U检验进行统计分析。

结果:MGO处理胶原不影响细胞活力或细胞凋亡。此外,MGO在诱导胶原基质的形态或机械性质方面没有显着地变化。然而,MGO处理的胶原蛋白刺激肌成纤维细胞标志物α-SMA的增加,FN的产生和形成以及胶原基质的收缩。此外,使用由MGO处理的胶原重组重组胶原结合结构域整合素GFOGER还原的三重螺旋肽诱导FN的形成。

结论:本研究显示,胶原糖化通过MGO刺激肌成纤维细胞的分化和FN的产生和形成。这些反应可能改变受糖尿病或衰老影响的牙龈结缔组织的稳态平衡和伤口愈合反应。

原始出处:

Ignacio N. Retamal, Romina Hernández, Francisco Melo, et al. Glycated Collagen Stimulates Differentiation of Gingival Myofibroblasts. Journal of Periodontology. 2017 September. doi: 10.1902/jop.2017.160730

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    2018-03-05 feather89
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    2017-08-31 189****1577

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