中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (19): 2981-2986.doi: 10.3969/j.issn.2095-4344.2014.19.005

• 骨髓干细胞 bone marrow stem cells • 上一篇    下一篇

H9C2细胞培养液诱导大鼠骨髓间充质干细胞向心肌样细胞分化

黄  吕,张  辉,解  力,李永林,张晓刚   

  1. 重庆医科大学附属第一医院心内科,重庆市  400016
  • 修回日期:2014-04-07 出版日期:2014-05-07 发布日期:2014-05-07
  • 通讯作者: 张辉,医师,重庆医科大学附属第一医院心内科,重庆市400016
  • 作者简介:黄吕,男,1987年生,汉族,重庆医科大学在读硕士,主要从事干细胞向心肌细胞诱导分化方面的研究。
  • 基金资助:

    重庆市卫生局医学科学技术研究重点项目(2009-1-51)

Differentiation of mesenchymal stem cells into cardiomyocyte-like cells induced by H9C2 cell culture medium

Huang Lv, Zhang Hui, Xie Li, Li Yong-lin, Zhang Xiao-gang   

  1. Department of Cardiology, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
  • Revised:2014-04-07 Online:2014-05-07 Published:2014-05-07
  • Contact: Zhang Hui, Physician, Department of Cardiology, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
  • About author:Huang Lv, Studying for master’s degree, Department of Cardiology, First Affiliated Hospital of Chongqing Medical University, Chongqing 400016, China
  • Supported by:

    the Medical Science and Technology Project of Chongqing Health Bureau, No. 2009-1-51

摘要:

背景:文献报道间充质干细胞经体外化学药物诱导或自体移植体内诱导或模拟心肌样微环境体外诱导等方法可不同程度的诱导心肌细胞分化,但这些方法诱导率低、操作复杂、毒副作用大。
目的:验证心肌细胞株H9C2细胞培养液对骨髓间充质干细胞分化为心肌样细胞的诱导作用。
方法:运用全骨髓贴壁筛选法分离培养大鼠间充质干细胞,制备H9C2细胞培养液作为诱导培养液,将间充质干细胞诱导培养1,3,5,7 d;以单独10%F12-DMEM培养液培养的H9C2细胞为阳性对照组;单独10%F12-DMEM培养液培养的间充质干细胞为阴性对照组。用免疫荧光法和western-blot检测其肌钙蛋白T、心肌细胞结蛋白的表达,用实时荧光定量检测其心肌细胞特征性基因α-肌球蛋白重链和β-肌球蛋白重链mRNA的表达。
结果与结论:H9C2细胞培养液诱导间充质干细胞培养7 d,间充质干细胞增殖分化细胞中肌钙蛋白T阳性细胞达(16±7)%,显著高于对照组(P < 0.05);与阴性对照组比较,western-blot检测诱导培养间充质干细胞后分化细胞肌钙蛋白T表达明显上调(P < 0.05),结蛋白表达明显上调(P < 0.05);RT-PCR检测分化细胞α-肌球蛋白重链与β-肌球蛋白重链mRNA表达均上调(P < 0.05)。结果提示H9C2细胞培养液能诱导间充质干细胞向心肌样细胞分化。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

关键词: 干细胞, 骨髓干细胞, 间充质干细胞, 骨髓间充质干细胞, H9C2, 心肌样细胞, 肌钙蛋白T

Abstract:

BACKGROUND: Mesenchymal stem cells can differentiate into cardiomyocytes in vitro induced by different methods, such as chemical drug induction, autologous transplantation in vivo, and in vitro simulation of cardiac-like microenvironment, but these inducible methods show low induction rate, complex operation, and toxic side effects.
OBJECTIVE: To investigate the role of H9C2 cell culture medium in the differentiation of mesenchymal stem cells into cardiomyocyte-like cells.
METHODS: Mesenchymal stem cells were obtained by the whole bone marrow adherent culture and H9C2 cell culture medium was prepared as a culture medium. Then mesenchymal stem cells were co-cultured with H9C2 cell culture medium for 1, 3, 5, 7 days. H9C2 cells cultured in 10% Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12 served as positive control groups, while mesenchymal stem cells cultured in 10% Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12 as negative control group. Immunofluorescence and western blot assay were used to detect expression of myocardial cell junction protein (desmin) and troponin T. Real-time quantitative PCR was applied to detect mRNA expression of myocardial cell trait genes, α-cardiac myosin heavy chain and β-myosin heavy chain.
RESULTS AND CONCLUSION: After co-culture of H9C2 cell culture medium and mesenchymal stem cells for 7 days, the troponin T positive cells were up to (16±7)%, which was significantly higher than that of non-induced mesenchymal stem cells. Compared with the negative control group, the expression of troponin T protein and desmin after induction were significantly increased (P < 0.05) by western-blot detection; real-time PCR showed that the mRNA expression of α-cardiac myosin heavy chain and β-myosin heavy chain in differentiated cells were both up-regulated (P < 0.05). These findings suggest that H9C2 cell culture medium may induce the differentiation of mesenchymal stem cells into cardiomyocyte-like cells.


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程


全文链接:

Key words: mesenchymal stem cells, myocytes, cardiac, troponin T

中图分类号: