中国组织工程研究 ›› 2016, Vol. 20 ›› Issue (25): 3673-3679.doi: 10.3969/j.issn.2095-4344.2016.25.004

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

中空多孔金属假体复合诱导因子对骨髓间充质干细胞生长及成骨分化的影响

赵子春,李凌伟,曹志强,李钊伟,李春亮,齐圆圆   

  1. 青海大学附属医院创伤骨科,青海省西宁市  810000
  • 收稿日期:2016-03-24 出版日期:2016-06-17 发布日期:2016-06-17
  • 作者简介:赵子春,男,1972年生,副主任医师,主要从事假体生物材料的应用研究和骨科创伤的临床研究。

Effects of hollow porous metal prosthesis combined with inducible factors on growth and osteogenic differentiation of bone marrow mesenchymal stem cells

Zhao Zi-chun, Li Ling-wei, Cao Zhi-qiang, Li Zhao-wei, Li Chun-liang, Qi Yuan-yuan   

  1. Department of Trauma Orthopedics, Affiliated Hospital of Qinghai University, Xining 810000, Qinghai Province, China
  • Received:2016-03-24 Online:2016-06-17 Published:2016-06-17
  • About author:Zhao Zi-chun, Associate chief physician, Department of Trauma Orthopedics, Affiliated Hospital of Qinghai University, Xining 810000, Qinghai Province, China

摘要:

 文章快速阅读:

 

文题释义:
诱导因子骨形态发生蛋白2:
是转化生长因子β超家族成员之一,具有诱导未分化间充质干细胞向成软骨细胞和成骨细胞定向分化与增殖能力,促进成骨细胞分化成熟,参与骨和软骨生长发育及其重建过程,进而加速骨缺损修复。骨形态发生蛋白2在体内以前体形式合成,经蛋白酶切去除信号肽和前肽,得到由114个氨基酸残基组成成熟肽。成熟肽通过7对二硫键将其保守结构正确折叠。成熟肽同源或异源二聚体才具有生物活性。
骨组织工程:指将分离的自体高浓度成骨细胞、骨髓基质干细胞或软骨细胞,经体外培养扩增后种植于一种天然或人工合成的、具有良好生物相容性、可被人体逐步降解吸收的细胞支架或细胞外基质上,然后将这种细胞杂化材料植入骨缺损部位,在生物材料逐步降解的同时,种植的骨细胞不断增殖,从而达到修复骨组织缺损的目的。

 

摘要
背景:
将骨形态发生蛋白与中空多孔钛合金复合,可提升材料与周围骨组织的亲和力。
目的:观察骨形态发生蛋白2对中空多孔金属假体支架内骨髓间充质干细胞生长及成骨分化的影响。
方法:将第3代SD大鼠骨髓间充质干细胞直接接种于中空多孔金属假体支架上,分别以含0,0.001, 0.01,0.06,0.1 g/L骨形态发生蛋白2的DMEM培养基培养,培养0,6,12,24,48 h,采用MTT法检测细胞黏附情况;培养18 d,茜素红染色检测细胞成骨分化能力。将Transwell培养池置于中空多孔金属假体支架上,上室加入5×108 L-1的骨髓间充质干细胞悬液,下室分别加入含0,0.001,0.01,0.06,0.1 g/L骨形态发生蛋白2的DMEM培养基,培养0,6,12,24,48 h后检测细胞迁徙能力。
结果与结论:①培养6-48 h,不同质量浓度骨形态发生蛋白2呈时间依赖性促进骨髓间充质干细胞的黏附;②培养18 d,经不同质量浓度骨形态发生蛋白2干预后,骨髓间充质干细胞由梭形改变为多角形,细胞呈多层性、重叠性排列,形成大量钙化结节,茜素红染色呈鲜红色;③培养6-48 h内,骨形态发生蛋白2可促进骨髓间充质干细胞的迁徙,且呈浓度、时间依赖性;④结果表明:骨形态发生蛋白2可增强中空多孔金属假体支架上骨髓间充质干细胞在的黏附能力、成骨分化能力与迁徙能力。

 

 ORCID: 0000-0002-1956-1583(赵子春)

关键词: 生物材料, 骨生物材料, 中空多孔金属假体支架, 复合诱导材料, 骨形态发生蛋白2成骨诱导因子, 骨组织工程, 骨髓间充质干细胞

Abstract:

BACKGROUND: Bone morphogenetic protein in combination with hollow porous titanium alloy can improve the affinity with surrounding bone tissues.

 

OBJECTIVE: To observe the effects of bone morphogenetic protein 2 on growth and osteogenic differentiation of bone marrow mesenchymal stem cells cuftured on a hollow porous metal prosthesis scaffold.

 

METHODS: Passage 3 Sprague-Dawley rat bone marrow mesenchymal stem cells were directly inoculated onto a hollow porous metal prosthesis, and then the scaffold was cultured in DMEM medium containing 0, 0.001, 0.01, 0.06 and 0.1 g/L bone morphogenetic protein 2, respectively. At 6, 12, 24 and 48 hours after inoculation, cell adhesion was detected by MTT assay. Cell osteogenic differentiation was detected by alizarin red staining at 18 days. Besides, Transwell culture was put on the scaffold, and 5x108/L bone marrow mesenchymal stem cells were added into the upper chamber, and DMEM medium containing 0, 0.001, 0.01, 0.06 and 0.1 g/L bone morphogenetic protein 2 were added into the lower chamber to observe cell migration capability after 0, 6, 12, 24 and 48 hours culture.

 

RESULTS AND CONCLUSION:After 6-48 hours of inoculation, different mass concentrations of bone morphogenetic protein 2 promoted adhesion of bone marrow mesenchymal stem cells in a time-dependent manner. After 18 days of inoculation, bone marrow mesenchymal stem cells induced by different mass concentrations of bone morphogenetic protein 2 changed from fusiform to polygon, and arranged in a multilayer and overlapped form. Numerous calcified nodules could be found, which were stained red by alizarin red. Additionally, within 6-48 hours of culture, bone morphogenetic protein 2 could promote the migration of bone marrow mesenchymal stem cells in a concentration-and time-dependent manner. In conclusion, bone morphogenetic protein 2 can enhance the adhesion, osteogenic differentiation and migration of bone marrow mesenchymal stem cells cultured on the hollow porous metal prosthesis.

 

 

 

 

Key words: Bone Morphogenetic Proteins, Prostheses and Implants, Stem Cells, Tissue Engineering

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