J Clin Periodontol:牙龈卟啉单胞菌脂多糖通过NF-κBκ而不是βWnt /β-catenin通路影响牙龈干/祖细胞特征

2017-10-28 MedSci MedSci原创

本研究首次研究牙龈卟啉单胞菌脂多糖(Pg-LPS)对牙龈干/祖细胞(G-MSC)增殖/再生能力的影响。

本研究首次研究牙龈卟啉单胞菌脂多糖(Pg-LPS)对牙龈干/祖细胞(G-MSC)增殖/再生能力的影响。

用0,10ng / ml,100ng / ml,1μg/ ml或10μg/ ml Pg-LPS处理G-MSC(n = 5)。 1小时后,检测Toll样受体4(TLR-4)表达和NF-κB和Wnt /β-catenin信号通路。第12天进行集落形成单位测定。在第24和48小时,进行MTT检测,ALP活性,肿瘤坏死因子-α(TNF-α),白介素-6,胶原蛋白I(Col-1),胶原蛋白-III,RUNX-2,碱性磷酸酶(ALP),骨粘连蛋白和白细胞介素-6和TNF-α的蛋白表达的测定。

随着Pg-LPS的增加,TLR-4上调,pNF-κB-p65从中位数(Q25 / Q75)6.56%(4.19 / 7.90)上升到13.02%(8.90 / 16.50; p = 0.002)和pNF-κB-p65 / tNF-κB-p65从0.14(0.10 / 0.17)上升到0.30(0.21 / 0.42; p = 0.002)。 pβ-catenin,tβ-catenin和pβ-catenin/tβ-catenin没有差异。Pg-LPS浓度增加使细胞数量从288.00(72.98 / 484.32)增加到861.39(540.41 / 1599.94; p = 0.002),ALP mRNA从0.00(0.00 / 0.01)增至0.56(0.00 / 1.90; p = 0.004) TNF-α从32.47(12.11 / 38.57)增至45.32(28.68 / 48.65; p = 0.036)。随着时间的推移,ALP活性从0.89(0.78 / 0.95)增加到1.90(1.83 / 2.09; p <0.001),TNF-α的mRNA从0.00(0.00 / 0.12)增加到0.01(0.00 / 0.06; p = 0.007)Col-1的mRNA从82.70(0.03 / 171.50)增至124.00(52.85 / 232.50; p = 0.019),而RUNX-2的mRNA从1.73(0.92 / 3.20)降至0.84(0.48 / 1.47; p = 0.005)。

结论:Pg-LPS促进G-MSC的增殖,而不会减弱其再生潜力,其作用是NF-κB而非Wnt /β-catenin通路依赖性。

原始出处:


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    2018-08-10 feather89
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    2017-10-30 zhwj
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    2017-10-28 131****1460

    学习了!受益匪浅.

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