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中华老年骨科与康复电子杂志

中华老年骨科与康复电子杂志 ›› 2019, Vol. 05 ›› Issue (02) : 82 -86. doi: 10.3877/cma.j.issn.2096-0263.2019.02.004

所属专题： 文献；

基础研究

hBMP-2基因改良修饰骨髓间充质干细胞和人脐血间充质干细胞研究
张洁1, 黄辉2, 王俊国3, 孙一4, 张海宁4,†(), 王英振4   
  1. 1. 261000　潍坊市中医院内分泌科
    2. 266000　青岛大学附属医院麻醉科
    3. 266100　青岛市海慈医院关节外科
    4. 266000　青岛大学附属医院关节外科
  • 收稿日期:2018-09-20 出版日期:2019-04-05
  • 通信作者: 张海宁
  • 基金资助:
    国家自然科学基金(81672197)

Research on bone marrow derived-mesenchymal stem cells and human umbilical cord blood derived-mesenchymal stem cells modified with the gene of human bone morphogenetic protein-2

Jie Zhang1, Hui Huang2, Junguo Wang3, Yi Sun4, Haining Zhang4,†(), Yingzhen Wang4   

  1. 1. Department of Endocrinology, Weifang Traditional Chinese Hosptial, Weifang 261000, China
    2. Department of Anesthesiology, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
    3. Department of Joint Surgery, Qingdao Haici Hosptial, Qingdao 266000, China
    4. Department of Joint Surgery, the Affiliated Hospital of Qingdao University, Qingdao 266000, China
  • Received:2018-09-20 Published:2019-04-05
  • Corresponding author: Haining Zhang
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引用本文：

张洁, 黄辉, 王俊国, 孙一, 张海宁, 王英振. hBMP-2基因改良修饰骨髓间充质干细胞和人脐血间充质干细胞研究[J/OL]. 中华老年骨科与康复电子杂志, 2019, 05(02): 82-86.

Jie Zhang, Hui Huang, Junguo Wang, Yi Sun, Haining Zhang, Yingzhen Wang. Research on bone marrow derived-mesenchymal stem cells and human umbilical cord blood derived-mesenchymal stem cells modified with the gene of human bone morphogenetic protein-2[J/OL]. Chinese Journal of Geriatric Orthopaedics and Rehabilitation(Electronic Edition), 2019, 05(02): 82-86.

目的

研究hBMP-2基因改良修饰骨髓和人脐血间充质干细胞的方法，并比较修饰结果。

方法

联合应用密度梯度离心法和贴壁培养法分离、培养骨髓和人脐血间充质干细胞，通过高效非脂质体试剂X-treme GENE介导重组hBMP-2质粒转染骨髓和人脐血间充质干细胞，倒置荧光显微镜检测荧光强度并计算转染效率，qPCR检测hBMP-2及软骨连接蛋白在两种细胞中的表达，免疫组化检测细胞中Ⅱ型胶原的变化。

结果

成功分离、培养出骨髓和人脐血间充质干细胞，两种细胞具有不同的生长特性。高效非脂质体试剂介导的重组hBMP-2质粒成功转染骨髓和人脐血间充质干细胞，转染骨髓间充质干细胞效率[（18.44±5.94）%]低于人脐血间充质干细胞[（27.74±7.59）%]，且差异有统计学意义（t=3.027，P<0.05）。转染后的两种细胞均检测到hBMP-2、软骨连接蛋白及Ⅱ型胶原的表达。

结论

hBMP-2基因可以有效改良修饰骨髓和人脐血间充质干细胞，且能促进其向软骨细胞方向分化。

关键词: BMP2蛋白，人, 间充质干细胞, 脂质体
Objective

To study the modification of bone marrow and human umbilical cord blood mesenchymal stem cells with hBMP-2 gene and compare the modification results.

Methods

Bone marrow and human umbilical cord blood mesenchymal stem cells were separated and cultured by density gradient centrifugation and adherent culture. The recombinant hBMP-2 plasmid was transfected into bone marrow and human umbilical cord blood mesenchymal stem cells by high-performance non-liposome reagent X-treme GENE. The fluorescence intensity was measured by inverted fluorescence microscopy and the transfection efficiency was calculated. The hBMP was detected by qPCR. The expression of-2 and chondronectin in two kinds of cells was detected by immunohistochemistry.

Results

Bone marrow and human umbilical cord blood mesenchymal stem cells were successfully isolated and cultured. The two cells had different growth characteristics. The recombinant hBMP-2 plasmid mediated by high-performance non-liposome reagent was successfully transfected into bone marrow and human umbilical cord blood mesenchymal stem cells. The efficiency of transfection of bone marrow mesenchymal stem cells (18.44±5.94)% was lower than that of human umbilical cord blood mesenchymal stem cells (27.74±7.59)%, and the difference was statistically significant (t=3.027, P<0.05). The expression of hBMP-2, cartilage connectin and collagen type II were detected in both transfected cells.

Conclusion

hBMP-2 gene can effectively modify bone marrow and human umbilical cord blood mesenchymal stem cells and promote chondrocyte differentiation.

Key words: BMP2 protein, human, Mesenchymal stem cells, Liposomes
图7~8 Ⅱ型胶原。图7 人脐血间充质干细胞；图8 骨髓间充质干细胞（x200）
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