薯蓣皂苷通过上调Lrp5、β-catenin表达促进成骨细胞MC3T3-E1增殖、分化

被引:22
作者
张春芳
吴珊
彭金咏
夏凡
王长远
刘琦
孟强
刘克辛
孙慧君
机构
[1] 大连医科大学药学院临床药理教研室
关键词
薯蓣皂苷; MC3T3-E1细胞; Lrp5; OPG/RANKL; 增殖; 分化;
D O I
暂无
中图分类号
R285.5 [中药实验药理];
学科分类号
100806 [中药药理学];
摘要
目的探讨薯蓣皂苷对体外培养的成骨细胞MC3T3-E1增殖、分化的影响,并初步探讨薯蓣皂苷预防与治疗骨质疏松的作用机制。方法①体外培养小鼠成骨细胞MC3T3-E1,分别加入含不同浓度的薯蓣皂苷(0.3、0.6、1.2μmol·L-1)进行培养,以洛伐他汀(0.04μmol·L-1)作为阳性对照。采用MTT法检测细胞增殖情况;用ALP试剂盒检测细胞内ALP的活性;采用RT-PCR检测Lrp5、β-catenin、OPG/RANKL mRNA表达情况;Von Kossa染色法检测细胞矿化能力。②通过RNAi技术将Lrp5基因沉默,检测薯蓣皂苷是否依赖于Lrp5来调节OPG/RANKL的比值。结果①薯蓣皂苷可以剂量依赖的促进MC3T3-E1细胞的增殖;②薯蓣皂苷可以剂量依赖的增加MC3T3-E1细胞ALP的活性;③薯蓣皂苷可以剂量依赖的上调MC3T3-E1细胞Lrp5、β-catenin、OPG/RANKL mRNA表达水平;④薯蓣皂苷可以使MC3T3-E1细胞产生的矿化结节数增加;⑤薯蓣皂苷依赖于Lrp5来调节MC3T3-E1的OPG/RANKL比值。结论①适量浓度的薯蓣皂苷可以促进MC3T3-E1细胞的增殖与分化;②薯蓣皂苷可以调节Lrp5等与骨代谢相关的基因的表达以产生抗骨质疏松作用。
引用
收藏
页码:1255 / 1260
页数:6
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