中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (28): 4155-4161.doi: 10.3969/j.issn.2095-4344.2016.28.008

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

Transwell共培养条件下诱导脂肪干细胞成骨能力的改变

孙仕晨,董腾哲,黄  昕,张云龙,陈  刚   

  1. 天津医科大学口腔医院口腔颌面外科,天津市  300070
  • 修回日期:2016-05-16 出版日期:2016-07-01 发布日期:2016-07-01
  • 通讯作者: 陈刚,博士,教授,天津医科大学口腔医院口腔颌面外科,天津市 300070
  • 作者简介:孙仕晨,男,1988年生,河北省唐山市人,汉族,天津医科大学在读硕士,主要从事口腔颌面外科及组织工程方面的研究。
  • 基金资助:

    教育部留学回国人员科研启动基金资助项目[教外司留(2012)940]

Osteogenic efficiency of induced adipose-derived stem cells under Transwell co-cultured condition  

Sun Shi-chen, Dong Teng-zhe, Huang Xin, Zhang Yun-long, Chen Gang   

  1. Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Tianjin Medical University, Tianjin 300070, China
  • Revised:2016-05-16 Online:2016-07-01 Published:2016-07-01
  • Contact: Chen Gang, M.D., Professor, Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Tianjin Medical University, Tianjin 300070, China
  • About author:Sun Shi-chen, Studying for master’s degree, Department of Oral and Maxillofacial Surgery, Stomatological Hospital, Tianjin Medical University, Tianjin 300070, China
  • Supported by:

    the Scientific Research Foundation for the Returned Overseas Chinese Scholars, State Education Ministry of China, No. (2012)940

摘要:

文章快速阅读:

文题释义:
成骨细胞前体:
即骨祖细胞,为成骨细胞的前体细胞,处于间充质干细胞向成骨细胞分化过程的中间阶段,分布于骨内膜、骨皮质、骨膜等处。具有继续分化为成骨细胞的能力,可通过分化为成骨细胞继而形成骨组织参与骨的改建与修复。
骨髓间充质干细胞在分化为成骨细胞过程中的作用:成骨细胞的前体细胞起承上启下的作用,但其在体内数量稀少,提取困难。脂肪干细胞较其他来源的间充质干细胞来源广泛,取材方便的。实验将脂肪干细胞在体外成骨诱导7 d,使其具有成骨细胞前体的特点,可获得足够数量的前体细胞,为体外研究提供充足细胞来源。

 

摘要
背景:
在共培养条件下,间充质干细胞可调节成骨细胞的分化和成骨能力。
目的:研究成骨细胞前体与未分化的骨髓间充质干细胞、脐带间充质干细胞和胎盘间充质干细胞在矿化培养液中共培养对其成骨效能的影响。
方法:脂肪干细胞成骨诱导7 d后获得诱导后的脂肪干细胞,将其分别与上述骨髓、其脐带和胎盘来源的间充质干细胞在Transwell小室中进行间接共培养。实验组根据间充质干细胞种类不同将其分为骨髓来源组、脐带来源组和胎盘来源组,对照组为诱导后的脂肪干细胞单独培养。在不同实验间期通过检测碱性磷酸酶活性以及定量分析钙基质沉积情况,观察不同组织来源的间充质干细胞对诱导后脂肪干细胞成骨效能的影响。
结果与结论:①碱性磷酸酶表达活性:间接共培养条件下实验组各组碱性磷酸酶活性显著高于对照组(P < 0.05),实验组中骨髓来源组碱性磷酸酶活性高于脐带来源组和胎盘来源组(P < 0.05);②钙化基质定量分析:实验组各组均显著高于对照组(P < 0.05),实验组中脐带来源组高于骨髓来源组和胎盘来源组(P < 0.05);③结果表明:诱导后的脂肪干细胞在间接共培养条件下受间充质干细胞的调节成骨能力明显提高。

 

 

关键词: 干细胞, 脂肪干细胞, 骨髓间充质干细胞, 脐带间充质干细胞, 胎盘间充质干细胞成骨, Transwell共培养, 成骨细胞前体, 分化, 微环境, 基质, 诱导

Abstract:

BACKGROUND: Under co-culture conditions, mesenchymal stem cells could regulate osteogenic differentiation and osteogenesis of osteoblasts.
OBJECTIVE: To observe the osteogenic efficiency of osteoblastic precursor cells co-cultured with undifferentiated bone marrow-derived mesenchymal stem cells, umbilical cord-derived mesenchymal stem cells, or placenta-derived mesenchymal stem cells in mineralization medium.
METHODS: Adipose-derived stem cells were induced in osteogenic differentiation medium for 7 days before being indirectly co-cultured with undifferentiated mesenchymal stem cells isolated from different tissues (bone marrow group, umbilical cord group and placenta group) in Transwell plates. Induced adipose-derived stem cells cultured alone served as control group. At different experimental intervals, quantitative analysis of alkaline phosphatase activity and calcified matrix was preformed to observe the effects of mesenchymal stem cells from different sources on the osteogenic efficiency of induced adipose-derived stem cells.
RESULTS AND CONCLUSION: Expression of alkaline phosphatase was significantly higher in different experimental groups than the control group (P < 0.05), and it was also higher in the bone marrow group than the umbilical cord and placenta groups (P < 0.05). Quantitative analysis of calcified matrix revealed that the experimental groups were significantly higher than the control group (P < 0.05); and in experimental groups, the umbilical cord group was higher than bone marrow group and placenta group(P < 0.05). These findings indicate that the osteogenic efficiency of induced adipose-derived stem cells is improved dramatically under co-culture conditions.

 

 

Key words: Stem Cells, Tissue Engineering, Alkaline Phosphatase

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