中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (1): 1-8.doi: 10.3969/j.issn.2095-4344.2013.01.001

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

自体激活富血小板血浆干预兔骨髓间充质干细胞体外成软骨分化的研究

王善正,王  宸,芮云峰   

  1. 东南大学附属中大医院骨科,江苏省南京市 210009
  • 收稿日期:2012-11-02 修回日期:2012-12-15 出版日期:2013-01-01 发布日期:2013-01-01
  • 通讯作者: 王宸,教授,硕士生导师,东南大学附属中大医院骨科,江苏省南京市 210009 wangchen@medmail.com.cn
  • 作者简介:王善正★,1987年生,江苏省新沂市人,汉族,东南大学在读硕士,主要从事骨与关节损伤的研究。wshz2007@ yahoo.com.cn
  • 基金资助:

    江苏省自然科学基金青年基金项目(BK2012334);东南大学“创新基金”项目(3290002401)。

Effect of activated autologous platelet-rich plasma on chondrogenic differentiation of rabbit bone marrow-derived mesenchymal stem cells in vitro

Wang Shan-zheng, Wang Chen, Rui Yun-feng   

  1. Department of Orthopedics, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, Jiangsu Province, China
  • Received:2012-11-02 Revised:2012-12-15 Online:2013-01-01 Published:2013-01-01
  • Contact: Wang Chen, Professor, Master’s supervisor, Department of Orthopedics, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, Jiangsu Province, China wangchen@ medmail.com.cn
  • About author:Wang Shan-zheng★, Studying for master’s degree, Department of Orthopedics, Affiliated Zhongda Hospital of Southeast University, Nanjing 210009, Jiangsu Province, China wshz2007@yahoo.com.cn
  • Supported by:

    the Natural Science Foundation of Jiangsu Province, No. BK2012334*; Innovation Foundation of Southeast University, No. 3290002401*

摘要:

背景:自体富血小板血浆激活后可释放多种生长因子,可以促进骨髓间充质干细胞的增殖与分化。
目的:观察自体激活富血小板血浆对体外培养的兔骨髓间充质干细胞向成软骨细胞分化的影响。
方法:取兔股骨骨髓,全骨髓贴壁法分离培养骨髓间充质干细胞;取第3代骨髓间充质干细胞,分别应用体积分数10%自体激活富血小板血浆和体积分数10%胎牛血清培养液进行体外培养,观察其向成软骨细胞分化情况。
结果与结论:分离培养的兔骨髓间充质干细胞呈长梭形,传代后细胞生长迅速。流式细胞仪检测发现第3代细胞高表达CD29、CD44,而低表达CD45。免疫荧光细胞化学染色显示经自体激活富血小板血浆诱导的骨髓间充质干细胞表达Ⅱ型胶原;实时荧光定量PCR检测发现经自体激活富血小板血浆诱导的骨髓间充质干细胞Ⅱ型胶原α1链基因和聚集蛋白聚糖基因表达明显高于经胎牛血清诱导的骨髓间充质干细胞(P < 0.01)。可见自体激活富血小板血浆具有促进兔骨髓间充质干细胞向软骨细胞方向分化的潜能。

关键词: 干细胞, 骨髓干细胞, 富血小板血浆, 骨髓间充质干细胞, 软骨细胞, 分化, Ⅱ型胶原, Ⅱ型胶原α1链, 聚集蛋白聚糖, 兔, 关节软骨损伤, 省级基金, 干细胞图片文章

Abstract:

BACKGROUND: Platelet-rich plasma, when activated, could secret multiple growth factors which may promote the proliferation and differentiation of bone marrow-derived mesenchymal stem cells.
OBJECTIVE: To explore the effect of activated autologous platelet-rich plasma on the chondrogenic differentiation of rabbit bone marrow-derived mesenchymal stem cells in vitro.
METHODS: Rabbit bone marrow-derived mesenchymal stem cells were isolated using the whole bone marrow adherence method. Passage 3 bone marrow-derived mesenchymal stem cells were in vitro cultured with 10% activated autologous platelet-rich plasma and 10% fetal bovine serum separately. Chondrogenic differentiation of rabbit bone marrow-derived mesenchymal stem cells in vitro was observed.
RESULTS AND CONCLUSION: Bone marrow-derived mesenchymal stem cells were successfully isolated and exhibited a long-shuttle-shaped appearance. Cells grew faster when passaged. Immunofluorescence staining showed that after induced by activated autologous platelet-rich plasma, bone marrow-derived mesenchymal stem cells exhibited type Ⅱ collagen expression. Quantitative real-time PCR analysis showed that the expression of α1 chain of type Ⅱ collagen and aggrecan mRNA was significantly up regulated in the bone marrow-derived mesenchymal stem cells induced by activated autologous platelet-rich plasma than in the cells induced by fetal bovine serum (P < 0.01). Our findings in this study suggested that activated autologous platelet-rich plasma can promote the chondrogenic differentiation of rabbit bone marrow-derived mesenchymal stem cells in vitro.

Key words: stem cells, bone marrow-derived stem cells, platelet-rich plasma, bone marrow mesenchymal stem cells, chondrocytes, differentiation, type Ⅱ collagen, type Ⅱ collagen α1 chain, aggrecan, rabbits, articular cartilage damage, provincial grants-supported paper, stem cell photographs-containing paper

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