中国组织工程研究 ›› 2012, Vol. 16 ›› Issue (49): 9128-9133.doi: 10.3969/j.issn.2095-4344.2012.49.002

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

兔骨髓间充质干细胞体外向肝样细胞的诱导分化

李德强1,王人颢2   

  1. 1江苏大学附属医院(徐州市第三人民医院)肝胆外科,江苏省徐州市   2210002徐州医学院附属医院肝胆外科,江苏省徐州市 221000
  • 收稿日期:2012-02-13 修回日期:2012-05-16 出版日期:2012-12-02 发布日期:2012-05-16
  • 通讯作者: 王人颢,硕士生导师,主任医师,徐州医学院附属医院肝胆外科,江苏省徐州市 221000 wangrenhao@126.com
  • 作者简介:李德强★,男,1983年生,江苏省徐州市人,汉族,2011年徐州医学院毕业,硕士,医师,主要从事骨髓干细胞诱导分化为肝样细胞方面及治疗肝硬化模型的研究。winter_feng20080808@126.com
  • 基金资助:

    徐州市科技局社会发展基金项目(XM09B093)

Differentiation of rabbit bone marrow mesenchymal stem cells into hepatocyte-like cells in vitro  

Li De-qiang1, Wang Ren-hao2    

  1. 1Department of Hepatobiliary Surgery, Affiliated Hospital of Jiangsu University (the Third People’s Hospital of Xuzhou), Xuzhou 221000, Jiangsu Province, China; 2Department of Hepatobiliary Surgery, Affiliated Hospital of Xuzhou Medical College, Xuzhou 221000, Jiangsu Province, China
  • Received:2012-02-13 Revised:2012-05-16 Online:2012-12-02 Published:2012-05-16
  • Contact: Wang Ren-hao, Master’s supervisor, Chief physician, Department of Hepatobiliary Surgery, Affiliated Hospital of Xuzhou Medical College, Xuzhou 221000, Jiangsu Province, China wangrenhao@126.com
  • About author:Li De-qiang★, Master, Physician, Department of Hepatobiliary Surgery, Affiliated Hospital of Jiangsu University (the Third People’s Hospital of Xuzhou), Xuzhou 221000, Jiangsu Province, China winter_feng20080808@126.com
  • Supported by:

    Social Development Foundation of Xuzhou Municipal Science and Technology Bureau, No. XM09B093*

摘要:

背景:研究表明,应用四氯化碳建造的重型肝衰竭小鼠模型中移植骨髓间充质干细胞后能够明显改善肝功能,促进肝再生。
目的:观察骨髓间充质干细胞移植后动物模型肝功能及肝硬化程度等指标的变化情况。
方法:采用密度梯度离心法和贴壁培养法获取兔骨髓间充质干细胞。取传代培养至3代的兔骨髓间充质干细胞,添加肝细胞生长因子和表皮生长因子,诱导21 d后进行BrdU标记。建立肝硬化兔模型,实验组兔将收集的BrdU标记过的肝样细胞悬液注入门静脉,对照组注入相同体积生理盐水。细胞移植后21 d麻醉下处死试验兔,观察肝硬化兔肝脏内分布及肝功能与对照组变化情况。
结果与结论:兔骨髓间充质干细胞在体外经肝细胞生长因子、表皮生长因子的诱导条件下,于21 d发现细胞呈类圆形,细胞染色显示,甲胎蛋白、血清白蛋白和糖原表达均呈阳性表达。肝样细胞经门静脉移植后,实验组兔肝生化指标与对照组相比较显著改善(P < 0.05)。BrdU免疫组织化学染色显示:在汇管区和肝索肝窦内均可见BrdU阳性细胞分布。说明兔骨髓间充质干细胞能够向肝样细胞分化,经门静脉移植诱导后的肝样细胞可以改善肝硬化兔的肝功能,促进兔肝细胞再生。

关键词: 肝样细胞, 骨髓间充质干细胞, 肝细胞生长因子, 表皮生长因子, 肝硬化, 干细胞

Abstract:

BACKGROUND: Bone marrow mesenchymal stem cells transplantation can significantly improve liver function and promote liver regeneration in a mouse model of severe liver failure induced by carbon tetrachloride. 
OBJECTIVE: To investigate liver function and hepatic cirrhosis degree after bone marrow mesenchymal stem cells transplantation.
METHODS: Bone marrow mesenchymal stem cells were isolated by density gradient centrifugation method and adherent culture method. Passage 3 bone marrow mesenchymal stem cells were treated with hepatocyte growth factor and epidermal growth factor and labeled with BrdU after induced for 21 days. At the same time, animal models of liver cirrhosis were established. The BrdU-labeled hepatocyte-like cells suspension and normal saline were injected into rabbits in the experimental and control groups through the portal vein. The rabbits were sacrificed under anesthesia at 21 days after transplantation. The hepatic cirrhosis degree and liver function of rabbits with cirrhosis were investigated.
RESULTS AND CONCLUSION: Morphological changes in bone marrow mesenchymal stem cells were observed after in vitro induced with hepatocyte growth factor and epidermal growth factor for 21 days and cell morphology changed into round. Cell staining results showed positive expression of alpha-fetoprotein, serum albumin and glycogen. After transplantation of hepatocyte-like cells through the portal vein, the liver biochemical indicators in the experimental group were significantly improved when compared with the control group (P < 0. 05). BrdU immunohistochemical staining showed the BrdU-positive cells were observed in the portal area and hepatic sinusoids. Rabbit bone marrow mesenchymal stem cells can be induced to differentiate into hepatocyte-like cells, and the induced cells can improve rabbit liver function and promote hepatocyte regeneration.

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