基础医学与临床 ›› 2012, Vol. 32 ›› Issue (2): 119-122.

• 干细胞专题 • 上一篇    下一篇

microRNA-373参与调控人脂肪来源间充质干细胞成骨分化

曾洋1,林瑞竹2,赵春华3   

  1. 1. 中国医学科学院基础医学研究所
    2.
    3. 中国医学科学院基础医学研究所组织工程中心
  • 收稿日期:2011-12-14 修回日期:2012-01-12 出版日期:2012-02-05 发布日期:2012-01-12
  • 通讯作者: 赵春华 E-mail:chunhuaz@public.tpt.tj.cn

MicroRNA-373 regulates the osteogenisis of human adipose tissue-derived Flk1+mesenchymal stem cells

  1. 1.
    2. Center for Tissue Engineering, Institute of Basic Medical Science,CAMS & PUMC
  • Received:2011-12-14 Revised:2012-01-12 Online:2012-02-05 Published:2012-01-12

摘要: 目的 用microRNA-373(miR-373)的模拟物转染人脂肪来源Flk1+间充质干细胞(MSC),探讨microRNA-373对Flk1+MSC成骨分化的影响。方法 利用脂质体作为载体,用miR-373模拟物瞬时转染Flk1+MSCs,然后对其进行成骨诱导,碱性磷酸酶(ALP)染色和茜素红染色观察成骨情况, Real-time PCR技术检测成骨标志性基因的表达。结果 ALP染色和茜素红可见明显差异;real-time PCR检测结果显示,实验组(miR-373组)成骨标志基因runt相关转录因子2(RUNX2)(0.543±0.021)、ALP(0.556±0.024)和骨钙蛋白(OC)(0.499±0.017)的表达都明显低于对照组(NC组)(p<0.05)。结论 miR-373参与调控Flk1+MSC向骨细胞分化。

关键词: miR-373, 间充质干细胞, 成骨分化

Abstract: Objective To evaluate the effect of microRNA-373(miR-373) on osteogenic differeniation of human adipose tissue-derived Flk1+ mesenchymal stem cells (MSCs). Methods Flk1+MSCs were transfected with miR-373 mimics using Lipofectamin2000 and then induced to differentiate into osteoblasts. The osteogenic efficiency was detected by ALP staining and Alizarin red staining as well as maker genes expression through real-time PCR. Results The ALP staining and Alizarin red staining showed significant difference between two groups. Compared to control group (NC group), the expression of osteogenic maker genes RUNX2 (0.543±0.021), ALP (0.556±0.024) and OC (0.499±0.017) were significantly reduced in the mimics-transfected group (miR-373 group) (P<0.05). Conclusion miR-373 could regulate the osteogenisis of Flk1+ MSCs negatively.

Key words: miR-373, MSCs, osteogenisis