中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (17): 2684-2689.doi: 10.3969/j.issn.2095-4344.2017.17.010

• 干细胞移植 stem cell transplantation • 上一篇    下一篇

带部分松质骨小牛皮质骨复合骨髓间充质干细胞植入兔体内成骨及骨形态发生蛋白2的表达

陈  能1,邵云峰1,刘  傥2,张湘生2,熊光仲2   

  1. 1深圳市蛇口人民医院,广东省深圳市  518067;2中南大学湘雅二医院,湖南省长沙市  410011
  • 修回日期:2017-03-15 出版日期:2017-06-18 发布日期:2017-06-29
  • 作者简介:陈能,男,1975年生,广东省高州市人,汉族,1998年中山医科大学毕业,副主任医师,主要从事创伤骨科及关节外科研究。
  • 基金资助:

    湖南省科技计划项目(2013FJ6001);深圳市科创委基金(20150305190447)

Osteogenesis and expression of bone morphogenetic protein 2 after bone marrow mesenchymal stem cells combined with calf cortical bone with partial cancellous bone implanted into rabbits

Chen Neng1, Shao Yun-feng1, Liu Tang2, Zhang Xiang-sheng2, Xiong Guang-zhong2   

  1. 1Shenzhen Shekou People’s Hospital, Shenzhen 518067, Guangdong Province, China; 2The Second Xiangya Hospital of Central South University, Changsha 410011, Hunan Province, China
  • Revised:2017-03-15 Online:2017-06-18 Published:2017-06-29
  • About author:Chen Neng, Associate chief physician, Shenzhen Shekou People’s Hospital, Shenzhen 518067, Guangdong Province, China
  • Supported by:

    the Scientific Research Project of Hunan Province, No. 2013FJ6001; the Foundation of the Science and Technology Innovation Committee of Shenzhen, No. 20150305190447

摘要:

文章快速阅读:

文题释义:
骨形态发生蛋白:
是一种存在于骨基质中的糖蛋白多肽,在生物体内的一项重要生物学作用是诱导未分化的间质细胞分化成为软骨和骨,它是唯一能够单独诱导骨组织形成的局部生长因子。骨形态发生蛋白各成员的诱导成骨能力不同,其中以骨形态发生蛋白2的成骨能力最强。
异种骨:作为一种生物组织,骨源丰富,目前异种松质骨应用较为多见,皮质骨因其难以降解,孔隙率低等原因限制了其使用。但皮质骨具有许多松质骨不具备的优越性,如生物力学方面,如何开发利用皮质骨是本课题研究的重点。

 

摘要
背景:
前期研究已证实兔骨髓间充质干细胞在体外成骨诱导培养下可定向成骨分化,并能够稳定表达成骨细胞的特异性表型,具有成骨能力;且已证实带部分松质骨的小牛皮质骨支架材料具有良好的生物相容性和降解性,可以作为骨髓间充质干细胞的载体材料。
目的:在前期研究基础上,根据骨组织工程学的基本原理,将骨髓间充质干细胞与小牛异种骨复合,植入新西兰大白兔髂骨内观察其成骨情况,为构建理想的初步组织工程骨工程化产品提供理论依据。
方法:分别将兔骨髓间充质干细胞成骨诱导后复合的带部分松质骨小牛皮质骨(组织工程骨组)、单纯小牛异种骨(异种骨组)、自体髂骨(自体髂骨组)随机植入兔髂骨。观察各组植入物的表面变化和周围组织反应,植入后4,8,12,24周摄X射线片观察成骨情况,取材后利用免疫组织化学染色观察骨形态发生蛋白2的表达情况。
结果与结论:异种骨植入兔髂骨后,伤口生长良好,没有全身和局部的炎症和毒性反应。X射线片显示组织工程骨组在术后24周时与宿主骨结合部基本愈合,而异种骨组术后24周与宿主骨愈合不满意。苏木精-伊红染色可观察到软骨化骨过程,免疫组织化学染色显示各时间点骨形态发生蛋白2染色阳性。体内实验结果表明兔骨髓间充质干细胞复合带部分松质骨的小牛皮质骨支架材料经体外诱导后具有在新西兰兔体内构建组织工程骨的能力。

 

 

ORCID: 0000-0002-5393-3520(陈能)

关键词: 干细胞, 骨髓干细胞, 骨髓间充质干细胞, 带部分松质骨的小牛皮质骨, 骨形态发生蛋白2

Abstract:

BACKGROUND: Previous studies have confirmed that rabbit bone marrow mesenchymal stem cells (BMSCs) can differentiate into osteoblasts under osteogenic induction in vitro, stably express the specific phenotype of osteoblasts and have osteogenic ability. Calf cortical bone scaffold with partial cancellous bone has good biocompatibility and degradability, which can be used as a carrier material of bone marrow mesenchymal stem cells.
OBJECTIVE: To combine rabbit BMSCs with calf bone composite according to the basic principles of bone tissue engineering and to observe the osteogenesis in the New Zealand white rabbits after implantation of BMSCs/calf bone composite into the ilium, thereby providing a direct evidence for preliminary clinical application of tissue-engineered bone products.
METHODS: BMSCs/calf cortical bone scaffold with partial cancellous bone (tissue-engineered bone group), simple calf heterogeneous bone (heterogeneous bone group) or autologous iliac bone (autologous iliac bone group) was randomly implanted into the rabbit ilium. The changes of implant surface and tissue reactions around the implant were observed. X-ray examination was performed to observe osteogenic changes at 4, 8, 12, 24 weeks after implantation. Immunohistochemistry staining was used to observe the expression of bone morphogenetic protein 2.
RESULTS AND CONCLUSION: After heterogeneous bone implantation, the wound healed well, and there were no systemic or local inflammation and toxicity reactions in all groups. The X-ray results showed that at postoperative 24 weeks, the implant was basically fused with the host bone in the tissue-engineered bone group, but the fusion was unsatisfactory in the heterogeneous bone group. The process of ossifications from cartilages was observed in all groups by hematoxylin-eosin staining, and bone morphogenetic protein 2 was positive for immunohistochemical staining. Findings from in vivo experiments indicate that rabbit BMSCs seeded onto the calf cortical bone scaffold with partial cancellous bone could construct tissue-engineered bone by osteoinductation in vitro in the rabbits.

 

 

Key words: Stem Cells, Bone Morphogenetic Proteins, Tissue Engineering

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