中国组织工程研究

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骨形态发生蛋白7诱导骨膜细胞碱性磷酸酶的表达

廖家成1,贝抗胜2,连银川1   

  1. 1深圳市龙华人民医院骨外科,广东省深圳市  518109;2韶关市粤北人民医院,广东省韶关市  512025
  • 收稿日期:2012-12-23 修回日期:2013-02-22 出版日期:2013-08-13 发布日期:2013-08-13
  • 作者简介:廖家成★,男,1981年生,江西省赣州市人,汉族,2010年汕头大学医学院毕业,硕士,主治医师,主要从事手外科的研究。Ljc076@163.com
  • 基金资助:

    广东省科技攻关项目(2005B36001054);深圳市宝安区科技计划社会公益项目。

Bone morphogenetic protein-7 induces the expression of alkaline phosphatase in periosteal cells

Liao Jia-cheng1, Bei Kang-sheng2, Lian Yin-chuan1   

  1. 1Department of Orthopedic Surgery, Longhua People’s Hospital, Shenzhen  518109, Guangdong Province, China; 2 Yue Bei People’s Hospital, Shaoguan  512025, Guangdong Province, China
  • Received:2012-12-23 Revised:2013-02-22 Online:2013-08-13 Published:2013-08-13
  • About author:Liao Jia-cheng★, Master, Attending physician, Department of Orthopedic Surgery, Longhua People’s Hospital, Shenzhen 518109, Guangdong Province, China Ljc076@163.com
  • Supported by:

    Guangdong Scientific and Technological Projects, No. 2005B36001054*; the Social Public Welfare Project of the Scientific and Technological Plan of Baoan District, Shenzhen City*

摘要:

背景:关于骨形态发生蛋白7作为刺激因子诱导细胞成骨的报道目前较少见。
目的:观察骨膜细胞经骨形态发生蛋白7诱导后碱性磷酸酶的表达。
方法:取材于成人胫骨骨膜,常规细胞培养法行骨膜细胞体外培养,分为实验组和对照组,分别加入骨形态发生蛋白7加成骨细胞培养辅助剂和单纯成骨细胞培养辅助剂,相差显微镜观察骨膜细胞形态特征及超微结构。每组分别在第7,14,21天设3个时间点,每个时间点设3个样本,采用碱性磷酸酶试剂盒法检测成骨细胞特异性标志物碱性磷酸酶表达情况。
结果与结论:骨膜细胞经分组培养后,第7天时,实验组和对照组骨膜细胞均有明显增殖,碱性磷酸酶的可被检测出,但量不多,细胞外形为梭形,实验组比对照组检测的碱性磷酸酶数量稍多;第14天时,实验组及对照组骨膜细胞均显著增殖,细胞外形由梭形变为宽梭形,实验组比对照组检测的碱性磷酸酶数量明显增多。第21天时,实验组及对照组骨膜细胞均增殖,其中实验组细胞增殖明显,细胞外形为宽梭形,实验组比对照组检测的碱性磷酸酶数量显著增多。经过统计学分析由骨形态发生蛋白7诱导的骨膜细胞的成骨标志物碱性磷酸酶阳性率明显高于对照组(P < 0.01)。提示骨膜细胞具有良好的成骨和再生能力, 骨形态发生蛋白7能诱导骨膜细胞加强碱性磷酸酶的表达,能诱导骨膜细胞向成骨细胞转化。

关键词: 组织构建, 骨组织构建, 骨形态发生蛋白7, 骨膜细胞, 碱性磷酸酶, 诱导, 成骨细胞, 细胞培养, 省级基金

Abstract:

BACKGROUND: The reports on bone morphogenetic protein-7 as a stimulating factor to induce osteogenic are relatively rare.
OBJECTIVE: To study the expression of alkaline phosphatase of periosteal cells after induced by bone morphogenetic protein-7 in vitro.
METHODS: Periosteal cells were obtained from adult tibial periosteum, and then the periosteal cells were cultured by routine method in vitro. The cells were divided into experimental group and control group, and then cultured with bone morphogenetic protein-7 plus osteoblast culture adjuvants and simple osteoblast culture adjuvants, respectively. The phase contrast microscope was used to observe the morphology and ultrastructure of periosteal cells. Each group was observed at 7, 14 and 21 days, and three samples were observed at each time point. Alkaline phosphatase kit was used to detect the expression of osteoblast-specific markers alkaline phosphatase.
RESULTS AND CONCLUSION: After cultured for 7 days, the proliferation of periosteal cells in the experimental group and the control group was increased obviously, and the expression of alkaline phosphatase was detected but less. The cells were spindle in shape, while the expression of alkaline phosphatase in the experimental group was higher than that in the control group. After cultured for 14 days, the proliferation of periosteal cells in the experimental group and the control group was increased obviously, the cell morphology was changed from   
 
spindle-shaped to wide spindle-shaped, and the expression of alkaline phosphatase in the experimental group was increased significantly when compared with the control group. After cultured for 21 days, the proliferation of periosteal cells was detected in the experimental group and the control group, and the proliferation in the experimental group was more significant than that in the control group, the cell morphology was wide spindle-shaped, and the number of alkaline phosphatase in the experimental group was higher than that in the control group. Statistical analysis showed that the positive rate of osteogenic markers alkaline phosphatase of bone morphogenetic protein-7 induced periosteal cells in the experimental group was higher than that in the control group (P < 0.01). It suggested that periosteal cells had the osteogenic and regeneration ability, the bone morphogenetic protein-7 could induce periosteal cells, promote the expression of alkaline phosphatase, and could induce the periosteal cells to transform into osteoblasts.

Key words: tissue construction, bone tissue construction, bone morphogenetic protein-7, periosteal cells, alkaline phosphatase, induction, osteoblasts, cell culture, provincial grants-supported paper

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