机械力作用下人牙周膜细胞Osterix mRNA和蛋白的表达附视频

被引:5
作者
赵艳红 [1 ]
李洪发 [1 ]
王春玲 [2 ]
郑朝 [1 ]
付雅丽 [1 ]
魏福兰 [2 ]
机构
[1] 天津医科大学口腔医院正畸科
[2] 山东大学口腔医院正畸科
关键词
人牙周膜细胞; 机械刺激; 成骨分化; 骨改建;
D O I
暂无
中图分类号
R78 [口腔科学];
学科分类号
1003 ;
摘要
目的研究在机械力作用下人牙周膜细胞内Osterix(Osx) mRNA和蛋白的表达变化,探讨Osx与正畸牙周组织骨改建的关系。方法组织块法培养人牙周膜细胞,采用离心加力装置对细胞分别加载1、2、4、6、8、12h的机械力。逆转录聚合酶链反应(RT-PCR)、Western blot及细胞免疫荧光化学技术分别检测不同时间点Osx mRNA和蛋白的表达变化及其细胞定位。结果在正常人牙周膜细胞中,Osx mRNA表达微弱,蛋白未见表达;在机械力加载4h后,Osx mRNA表达开始明显增强(P<0.01),蛋白呈现弱表达(P<0.05);加载8h时,OsxmRNA和蛋白表达显著增强(P<0.01);持续增加至加力12h。同时,加力4h后,少量细胞的胞质内开始呈现微弱的绿色荧光;12h后,阳性表达主要集中在胞核内。结论机械力可诱导人牙周膜细胞Osx表达增强及活化。Osx可能参与了细胞内生物力学信号的转导,从而可能在正畸牙周组织的骨改建过程中发挥着重要作用。
引用
收藏
页码:214 / 218+228 +228
页数:6
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