中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (37): 6008-6013.doi: 10.3969/j.issn.2095-4344.2014.37.019

• 脂肪干细胞 adipose-derived stem cells • 上一篇    下一篇

体外培养兔脂肪源性间充质干细胞的成骨成脂分化

李受珉1,吴子征2,王  泽1,李  智3,张  键1   

  1. 1复旦大学附属中山医院骨科,上海市  200032
    2上海市第一人民医院宝山分院骨科,上海市  200940
    3复旦大学附属中山医院青浦分院骨科,上海市  201700
  • 修回日期:2014-08-04 出版日期:2014-09-03 发布日期:2014-09-03
  • 通讯作者: 吴子征,硕士,副主任医师,上海市第一人民医院宝山分院骨科,上海市 200940
  • 作者简介:李受珉,女,1985年生,韩国人,复旦大学在读博士,主要从事组织工程、创伤骨科方面的研究。
  • 基金资助:

    上海市卫计委资助项目(2010135)

Osteogenic and adipogenic differentiation of rabbit adipose-derived mesenchymal stem cells in vitro

Lee Soo-min1, Wu Zi-zheng2, Wang Zhe1, Li Zhi3, Zhang Jian1   

  1. 1Department of Orthopedics, Zhongshan Hospital of Fudan University, Shanghai 200032, China
    2Department of Orthopedics, Baoshan Branch, Shanghai First People’s Hospital, Shanghai 200940, China
    3Department of Orthopedics, Qingpu Branch, Zhongshan Hospital of Fudan University, Shanghai 201700, China
  • Revised:2014-08-04 Online:2014-09-03 Published:2014-09-03
  • Contact: Wu Zi-zheng, Master, Associate chief physician, Department of Orthopedics, Baoshan Branch, Shanghai First People’s Hospital, Shanghai 200940, China
  • About author:Lee Soo-min, Studying for doctorate, Department of Orthopedics, Zhongshan Hospital of Fudan University, Shanghai 200032, China
  • Supported by:

    the grant from Shanghai Municipal Commission of Health and Family Planning, No. 2010135

摘要:

背景:脂肪源性间充质干细胞具有自我更新能力且在体外特定条件下具有多向分化潜能,在临床上具有广泛的应用前景。然而,脂肪源性间充质干细胞的分离培养仍存在诸多困难与不足。
目的:体外分离培养获得兔脂肪源性间充质干细胞,对其形态学、生物学特性进行观察,并鉴定其向成骨、成脂分化的潜能。
方法:切取兔颈背区皮下脂肪,用胶原酶消化法分离兔脂肪源性间充质干细胞,进行体外培养,流式细胞仪检测细胞表面标志物,CCK-8法检测细胞活性并绘制细胞生长曲线。第4代兔脂肪源性间充质干细胞向成脂、成骨诱导分化后进行油红O染色、茜素红染色、碱性磷酸酶染色,观察其成脂、成骨分化潜能。
结果与结论:兔脂肪源性间充质干细胞呈长梭形漩涡样贴壁生长,能稳定传代至第10代,增殖能力强;流式细胞仪检测可高表达CD29、CD90及CD44,而CD34和CD45表达较低;成脂诱导后的兔脂肪源性间充质干细胞油红O染色呈阳性;成骨诱导后的兔脂肪源性间充质干细胞碱性磷酸酶和茜素红染色均呈阳性,以上结果显示实验成功分离培养出兔脂肪源性间充质干细胞,获得的细胞生长稳定,增殖活跃,高表达间充质干细胞的表面抗原以及具有向成骨、成脂等多向分化的潜能,有望为骨组织工程提供理想的种子细胞。


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, 脂肪干细胞, 诱导, 脂肪源性间充质干细胞, 成脂分化, 成骨分化, 表面标志物

Abstract:

BACKGROUND: Adipose-derived mesenchymal stem cells have the ability to self-renew and have pluripotent potential under specific conditions in vitro, which have broad application prospects in clinical practice. However, isolation and culture of adipose-derived mesenchymal stem cells still appear to have many difficulties and shortcomings.
OBJECTIVE: To isolate and culture rabbit adipose-derived mesenchymal stem cells in vitro in order to study their morphology, cell surface markers and biological properties as well as to investigate the osteogenic and adipogenic potentials of adipose-derived mesenchymal stem cells in vitro.
METHODS: Primary adipose-derived mesenchymal stem cells were isolated from the subcutaneous adipose tissue of posterior cervical region from New Zealand white rabbits and digested by 0.1% collagenase I. The cells were passaged and amplified by the trypsin digestion. The passage 4 adipose-derived mesenchymal stem cells were induced to differentiate after exposure to adipogenic or osteogenic medium. The oil red O staining, alkaline phosphatase and alizarin red staining were used to detect the results. The cell viability was detected by the cell counting kit 8 method to drawn the growth curve. Cell surface markers were examined using flow cytometry.
RESULTS AND CONCLUSION: The adipose-derived mesenchymal stem cells isolated from the subcutaneous adipose tissue of rabbits exhibited a fusiform adherent growth in a vortex pattern, and had a strong capability of proliferation that could be passaged stably to the 10th generation. Flow cytometry results showed that the cells highly expressed CD29, CD90, CD44, but lowly expressed CD45 and CD34. After adipogenic induction, the adipose-derived mesenchymal stem cells were positive for oil red O staining; after osteogenic induction, the cells were both positive for alkaline phosphatase and alizarin red staining. These findings suggest that the adipose-derived mesenchymal stem cells were successfully isolated and cultured from the subcutaneous adipose tissue of rabbits, and these cells are pluripotent with the potential to differentiate into adipocytes and osteoblasts, which are expected to be ideal seed cells for bone tissue engineering.


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: subcutaneous fat, mesenchymal stem cells, rabbits, adipogenesis

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