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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.doc

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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 青海大学附属医院创伤骨科,青海省西宁市 810000 引用本文:赵子春,李凌伟,曹志强,李钊伟,李春亮,齐圆圆. 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[J].中国组织工程研究,2016,20 25 :3673-3679. DOI: 10.3969/j.issn.2095-4344.2016.25.004 ORCID: 0000-0002-1956-1583 赵子春 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。: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,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 Department of Trauma Orthopedics, Affiliated Hospital of Qinghai University, Xining 810000, Qinghai Province, China 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 di
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