过表达Runx2促进C2C12细胞成骨分化

被引:5
|
作者
李萍 [1 ]
余守和 [1 ]
陈迪 [1 ]
高忠平 [1 ]
申健 [1 ]
时宿妹 [1 ]
孙奋勇 [1 ]
机构
[1] 暨南大学生命科学技术学院生物工程研究所
关键词
Runx2; C2C12细胞; Tet-on基因表达系统; 成骨分化;
D O I
10.13865/j.cnki.cjbmb.2010.03.006
中图分类号
Q343 [细胞遗传学];
学科分类号
071007 ; 090102 ;
摘要
利用Tet-on(Tetracycline-on)基因表达系统,通过强力霉素(doxycycline,DOX)诱导Runx2基因在C2C12细胞中的表达,探究Runx2促成骨分化功能,为其分子机制的研究提供一个理想的实验平台.先后将调控质粒pTet-on和反应质粒pTRE-Flag-Runx2转染入C2C12细胞,并用G418和潮霉素分别进行2轮筛选,运用实时荧光定量PCR选择对强力霉素诱导敏感的细胞克隆.用不同浓度DOX诱导C2C12/Tet/pTRE-Flag-Runx2细胞,蛋白免疫印迹检测Runx2的表达,确定DOX的最佳诱导浓度与时间,并检测C2C12细胞的成骨分化能力.结果表明,诱导细胞最佳DOX浓度为10μg/ml;最佳诱导时间为12h;诱导后Runx2基因高表达,C2C12细胞向成骨方向分化(P<0.05).成功建立Tet调控Runx2基因表达C2C12细胞系,为进一步研究Runx2基因功能分子机制提供理想的细胞模型.
引用
收藏
页码:236 / 242
页数:7
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