中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (42): 7349-7355.doi: 10.3969/j.issn.2095-4344.2013.42.002

• 组织工程骨及软骨材料 tissue-engineered bone and cartilage materials • 上一篇    下一篇

体外构建人工仿生骨膜

孙  瑞1,陈晓飞2,赵  琳1,赵建宏1,庾佳佳1,任广铁1,拓振合1   

  1. 1甘肃省骨关节病重点实验室,兰州大学第二医院骨科,甘肃省兰州市 730000
    2甘肃省中医院放射科,甘肃省兰州市 730000
  • 收稿日期:2013-04-02 修回日期:2013-04-18 出版日期:2013-10-15 发布日期:2013-10-31
  • 通讯作者: 赵琳,主任医师,硕士生导师,甘肃省骨关节病重点实验室,兰州大学第二医院骨科,甘肃省兰州市 730000 bonezl@sina.com
  • 作者简介:孙瑞★,男,1976年生,甘肃省金昌市人,汉族,兰州大学在读硕士,主要从事创伤修复与功能重建研究。 1577064053@qq.com
  • 基金资助:

    国家自然科学基金资助项目(30973064)*

In vitro constructing artificial biomimetic periosteum

Sun Rui1, Chen Xiao-fei2, Zhao Lin1, Zhao Jian-hong1, Yu Jia-jia1, Ren Guang-tie1, Tuo Zhen-he1   

  1. 1Department of Orthopedics, Second People’s Hospital of Lanzhou University, Lanzhou  730030, Gansu Province, China
    2Department of Radiology, Chinese Traditional Medicine Hospital of Gansu Province, Lanzhou  730000, Gansu Province, China
  • Received:2013-04-02 Revised:2013-04-18 Online:2013-10-15 Published:2013-10-31
  • Contact: Zhao Lin, Chief physciain, Master’s supervisor, Department of Orthopedics, Second People’s Hospital of Lanzhou University, Lanzhou 730030, Gansu Province, China bonezl@sina.com
  • About author:Sun Rui★, Studying for master’s degree, Department of Orthopedics, Second People’s Hospital of Lanzhou University, Lanzhou 730030, Gansu Province, China 1577064053@qq.com
  • Supported by:

    the National Natural Science Foundation of China, No. 30973064*

摘要:

背景:小肠黏膜下层既具有良好的生物相容性和降解性,又富含多种生长因子,能明显促进细胞的黏附、增殖及分化,在国外已被广泛应用于骨与软骨、血管、皮肤、膀胱、平滑肌及胰岛等组织的修复,且已表现出良好的组织工程化细胞支架性能。
目的:探讨兔骨髓间充质干细胞经体外诱导成成骨细胞与猪小肠黏膜下层复合构建组织工程骨膜的可行性。
方法:采用贴壁筛选法分离2周龄健康新西兰大白兔骨髓间充质干细胞,并进行体外扩增培养、诱导分化及鉴定。将经成骨诱导分化的骨髓间充质干细胞与猪小肠黏膜下层复合构建组织工程骨膜,观察细胞在生物材料上的附着、生长、增殖情况。
结果与结论:接种5 d后,细胞散在附着于小肠黏膜下层材料上,细胞形态呈圆形,细胞之间无连接;10 d后细胞之间形成桥粒连接,成骨细胞伸出突起,与小肠黏膜下层贴附;15 d后细胞增殖,分泌基质,在小肠黏膜下层表面形成多层细胞组成的复层膜样结构。表明将骨髓间充质干细胞诱导成成骨细胞后与猪小肠黏膜下层复合可构建组织工程骨膜,有可能成为理想的组织工程支架材料。

关键词: 生物材料, 组织工程骨材料, 骨髓间充质干细胞, 小肠黏膜下层, 成骨细胞, 组织工程骨膜, 诱导, 国家自然科学基金

Abstract:

BACKGROUND: The small intestinal submucosa has good biocompatibility and biodegradability, and also contains a variety of growth factors that can significantly promote cell adhesion, proliferation and differentiation. Currently, the small intestinal submucosa has been widely used in bone and cartilage, blood vessels, skin, bladder, smooth muscle and pancreatic tissue repair, showing good performance as a tissue-engineered cell scaffold.
OBJECTIVE: To investigate the in vitro feasibility of tissue engineered periosteum constructed by porcine small intestinal submucosa and osteoblasts differentiated from bone marrow mesenchymal stem cells.
METHODS: Bone marrow mesenchymal stem cells were harvested from 2-week-old healthy New Zealand rabbits by using adherent method, and then cells were cultured, induced, differentiated and identified in vitro. Following induced differentiation and identification, the bone marrow mesenchymal stem cells were compounded with porcine small intestinal submucosa to fabricate tissue engineered periosteum. The adhesion, growth, and proliferation of cells on the materials were observed.
RESULTS AND CONCLUSION: At 5 days after inoculation, the cells receiving osteogenic induction could quickly adhere and proliferate on the surface of porcine small intestinal submucosa and be interconnected; at 10 days, the desmosomes formed among the cells, cell processes from osteoblasts were visible and attached to the small intestine submucosa; at 15 days, cell proliferation and secretion of matrix appeared, and multi-layer  membrane-like structure formed on the surface of the small intestine submucosa. These findings indicate that after osteogenic induction, the bone marrow mesenchymal stem cells can be combined with porcine small intestinal submucosa to construct a tissue engineered periosteum, which is hoped to be an ideal scaffold for tissue engineering.

Key words: tissue engineering, osteoblasts, biomimetic materials, stem cells

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