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J Periodontal Res:转录因子Dec1与实验诱导性牙周炎的关系

2018-10-02 MedSci MedSci原创

转录调节的中断是与广泛的人类炎性疾病相关的混杂因素。为了研究转录因子DEC1与炎症途径之间的机制关联,用牙龈卟啉单胞菌(或羧甲基纤维素作为对照)处理野生型和DEC1敲除(KO)C57BL / 6小鼠以诱导牙周炎症。它引发口腔炎症反应,导致牙槽骨吸收和炎性细胞因子表达的强烈变化。

转录调节的中断是与广泛的人类炎性疾病相关的混杂因素。为了研究转录因子DEC1与炎症途径之间的机制关联,用牙龈卟啉单胞菌(或羧甲基纤维素作为对照)处理野生型和DEC1敲除(KO)C57BL / 6小鼠以诱导牙周炎症。它引发口腔炎症反应,导致牙槽骨吸收和炎性细胞因子表达的强烈变化。

方法:将雄性DEC1KO小鼠及其野生型同窝小鼠用于实验性牙周炎模型。在该研究中测量牙槽骨吸收量,利用微计算机断层扫描,分离牙龈单核细胞(GMC),使用流式细胞术和免疫组织化学分析。人牙龈成纤维细胞(HGF-1)用于DEC1过表达和短干扰RNA(siRNA)研究,并进行定量实时聚合酶链反应和蛋白质印迹分析。

结果:微型计算机断层扫描分析表明,与DEC1KO小鼠相比,牙龈卟啉单胞菌引起野生型小鼠骨面积的减少。用牙龈卟啉单胞菌处理后,DEC1KO小鼠中GMC中炎症和免疫标志物的表达显着降低。相反,在从DEC1KO小鼠分离的GMC中白细胞介素(IL)-4和IL-10mRNA显着增加。用牙龈卟啉单胞菌处理的DEC1KO小鼠CD11b + F4 / 80 +和CD4 + RANKL + T细胞的数量减少。与对照相比,用牙龈卟啉单胞菌处理的DEC1KO小鼠中炎性细胞浸润物中CD4,F4 / 80,RANKL和组织蛋白酶K的表达显着降低。此外,DEC1在HGF-1细胞中的过表达增加了IL-1β和肿瘤坏死因子-αmRNA的表达,并且它们的表达水平在用脂多糖处理时达到最大值。通过短干扰RNA干扰抑制DEC1抑制了牙龈卟啉单胞菌衍生的脂多糖诱导的IL-1β,肿瘤坏死因子-α和toll样受体4的表达。

这些结果表明,转录因子DEC1可以调节口腔粘膜中牙龈卟啉单胞菌诱导的牙周炎。

原始出处:

F. Zhang, et al.Transcription factor DEC1 is required for maximal experimentally induced periodontal inflammation. Journal of  Periodontal Research. 2018 October. Doi:10.1111/jre.12578

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    2019-06-14 柳叶一刀
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    2019-04-24 wgx306
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    2018-11-20 mjldent
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