5-氮杂胞苷和地塞米松对大鼠骨髓间充质干细胞分化作用的实验研究

被引:8
作者
陈志雄
王若禺
许伟华
机构
[1] 华中科技大学同济医学院附属协和医院骨科
关键词
5-氮杂胞苷; 骨髓间充质干细胞; 糖皮质激素; 成骨分化;
D O I
暂无
中图分类号
R681.8 [下肢骨];
学科分类号
100220 [骨科学];
摘要
[目的]探究5-氮杂胞苷和地塞米松对大鼠骨髓间充质干细胞(mesenchymal stem cells,MSCs)成骨分化能力的影响。[方法]SD大鼠骨髓间充质干细胞体外扩增和传代培养,流式细胞术鉴定细胞表面标志,取3代细胞随机分为空白组、激素组、激素+5-氮杂胞苷组,相应药物干预3 d后成骨诱导分化14 d,RT-PCR和Western blot检测Runx2和PPARγ的表达。[结果]所取得骨髓间充质干细胞纯度和均一性好,细胞表面标记CD90高表达,CD34、CD45低表达。第3代细胞经药物干预和成骨诱导后,与空白组相比,激素组Runx2基因表达降低,PPARγ基因升高,5-氮杂胞苷+激素组结果与激素组相反(P<0.05)。[结论]激素能抑制骨髓间充质干细胞成骨分化,促进成脂分化,5-氮杂胞苷能干预激素的这种作用,提高骨髓间充质干细胞分化潜能。
引用
收藏
页码:58 / 63
页数:6
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