J4

• 基础研究 • 上一篇    下一篇

人Ad-BMP-2基因转染兔骨髓基质干细胞对其Ⅱ型胶原和碱性磷酸酶表达的影响

韩 冬1△,李建军2,张 巨1,孙鸿斌1,顾家祥1,王 健3,刘建国2,王国君1*   

  1. 1.吉林大学中日联谊医院手外科,吉林 长春130031;2.吉林大学第一医院骨科,吉林 长春130021;3.温州医学院附属一院骨科,浙江 温州325000
  • 收稿日期:2004-01-13 修回日期:1900-01-01 出版日期:2005-01-28 发布日期:2005-01-28
  • 通讯作者: 王国君

Effects of BMP-2 gene transduced rabbit bone marrow stromalcells on expressions of collagen type Ⅱ and AKP

HAN Dong1△, LI Jian-jun2, ZHANG Ju1, SUN Hong-bin1,GU Jia-xiang1, WANG Jian3, LIU Jian-guo2,WANG Guo-jun1*   

  1. 1. Department of Hand Surgery, China-Japan Union Hospital, Jilin University, Changchun 130031, China;2. Department of Orthopedics, First Hospital, Jilin University, Changchun 130021, China;3. Department of Orthopedics, First Hospital ,Wenzhou Medical College, Wenzhou 325000, China
  • Received:2004-01-13 Revised:1900-01-01 Online:2005-01-28 Published:2005-01-28
  • Contact: WANG Guo-jun

摘要: 目的:用人骨形态发生蛋白2腺病毒表达载体(Ad-BMP-2)转染兔骨髓基质干细胞(BMSC),观察Ad-BMP-2转染对细胞分化的影响。 方法:将Ad-BMP-2转染体外培养的兔BMSC,7 d后利用原位杂交和免疫组化方法检测细胞内BMP-2及Ⅱ型胶原的表达,同时行碱性磷酸酶染色。 结果:BMP-2和Ⅱ型胶原原位杂交法显示实验组细胞胞浆中有棕黄色阳性杂交信号,对照组阴性。BMP-2和Ⅱ型胶原免疫组化法显示实验组细胞胞浆棕黄色阳性着色,胞核阴性表达,对照组阴性;碱性磷酸酶染色见实验组细胞胞浆呈棕黑色阳性着色,可见细小的棕黑色颗粒,对照组染色阴性。结论:Ad-BMP-2可高效转染BMSC,且促进其向成骨细胞和软骨细胞方向转化。

关键词: 人, 骨形态发生蛋白质类, 转染, 干细胞, 胶原Ⅱ型, 碱性磷酸酶

Abstract: Objective Using a recombinant adenoviral vector carrying the human BMP-2 gene (Ad-BMP-2) to transfect rabbit bone marrow stromal cells (BMSC) to study the effects of Ad-BMP-2 transfection on cell differentiation. Methods The rabbit BMSC cultured in vitro were transfected by Ad-BMP-2. Seven days later, the expressions of BMP-2 and collagen type Ⅱ in these cells were determined by in situ hybridization and immunohistochemical analysis, and the alkaline phosphatase (AKP) activity of the BMSC was observed. Results There were positive results in cytoplasm in experimental group: the brown-yellow hybridization signals were observed and that indicated the expressions of BMP-2 and collagen type Ⅱ of Ad-BMP-2 infected BMSC by in situ hybridization, the yellow pigmenting were observed by immunohistochemical analysis but not in nuclei, the brown-black particles were seen by AKP staining. But in control group, these were negative. Conclusion Ad-BMP-2 could infect BMSC with high efficiency and promote the conversion to osteoblast and chondrocyte.

Key words: human, bone morphogenetic proteins, transfection, stem cells, collagen type Ⅱ, alkaline phosphatase

中图分类号: 

  • Q78