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丙二醛对体外培养下小鼠骨髓间充质干细胞凋亡的诱导作用 被引量:2

Malondialdehyde Induces Apoptosis in Murine Bone Marrow-derived Mesenchymal Stem Cells in vitro
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摘要 为了探索丙二醛对小鼠骨髓间充质干细胞(MSCs)凋亡的诱导作用及其机制,在不同浓度的丙二醛培养体系中孵育MSCs 24 h,用TUNEL法、流式细胞术检测MSC凋亡率,并用实时定量RT-PCR、Western印迹检测Bcl-2、Bax及Caspase-3基因的表达水平。结果发现,MDA能浓度依赖性地增加TUNEL阳性细胞百分率、亚G1峰细胞百分率,同时下调Bcl-2 mRNA及蛋白的表达,上调Bax mRNA和Caspase-3 mRNA及蛋白的表达.这些结果表明:在体外培养条件下,丙二醛可诱导小鼠骨髓间充质干细胞的凋亡,其作用机制与Bcl-2、Bax和Caspase-3基因表达水平的变化有关。 In order to explore the apoptosis-inducing effect of MDA on murine bone marrow-derived mes- enchymal stem cells (MSCs) in vitro, MSCs were treated with and without three concentrations of MDA (0.01, 0.1, 1.0 mmol/L) for 24 h.The apoptotic indexes were evaluated by flow cytometry and TUNEL assay, mR- NAs and proteins levels of Bcl-2, Bax and Caspase-3 were measured using Q-RT-PCR and Western blot- ting. MDA caused apoptosis in MSCs, increased the expression of Bax and Caspase-3, and decreased the ex- pression of Bcl-2 in a concentration-dependent manner. MDA-induced apoptosis is involved in the change in expression levels of Bcl-2, Bax and Caspase-3.
出处 《生命科学研究》 CAS CSCD 北大核心 2014年第2期129-133,共5页 Life Science Research
基金 湖南省科技计划一般项目资助(N2013FJ3016) 2013年度湖南省教育厅科学研究青年项目(13B070) 长沙市科技计划项目民生科技支撑资金专项(K1303026-31) 2013年晓庄学院大学生研究性学习和创新性实验计划项目 湖南科技职业学院科研一般项目资助(KJ13203) 湖南省教育厅科研项目资助(13C361)
关键词 丙二醛 间充质干细胞 凋亡 malondialdehyde mesenchymal stem cells apoptosis
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