新型神经支架材料的构建及其与骨髓基质干细胞复合的实验研究Development of a new type nerve tissue engineering scaffolds and its combination with bone marrow stromal cells
孟浩;罗卓荆;冯林杰;王亮;
摘要(Abstract):
[目的]研制出一种可用于修复周围神经缺损的组织工程支架材料,并观察体外培养的骨髓基质干细胞在支架材料中的生长情况。[方法]以I型胶原蛋白和明胶通过冷冻干燥技术制备胶原蛋白支架材料。扫描电镜观察内部结构的排列规律及走行,测量其孔径大小、孔隙率等指标。将骨髓基质干细胞复合到胶原蛋白支架材料中共培养5 d后,扫描电镜下观察其在材料内部的生长情况。[结果]构建的材料均为圆柱状,内部为孔径均匀且平行排列的微管结构,体外培养的骨髓基质干细胞成功种植在支架材料上,在材料内部生长良好。[结论]构建的支架材料具有良好的三维空间构形和生物相容性,为神经损伤的修复提供了一种新型的支架材料。
关键词(KeyWords): 组织工程;胶原;明胶;骨髓基质干细胞
基金项目(Foundation): 国家863课题项目(NO:2002AA216101)
作者(Author): 孟浩;罗卓荆;冯林杰;王亮;
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DOI:
参考文献(References):
- [1]Chamberlain LJ,Yannas IV,Hsu HP,et al.Collagen-GAG substrateenhances the quality of nerve regeneration through collagen tubes upto level of autograft[J].Exp Neurol,1998,154:315-329.
- [2]梁伟,罗卓荆,王树森,等.修复神经缺损的组织工程支架材料的研制及其生物相容性研究[J].中华创伤骨科杂志,2004,6(9):1037-1041.
- [3]Etoh S,Takakuda K,Kawabata K,et al.Evaluation of cross-linkingprocedures of collagen tubes used in peripheral nerve repair[J].Bio-materials,2002,23(23):4475-4481.
- [4]Ayman A,Takeshi K,Kazumasa E,et al.Morphological differentia-tion of bone marrow stromal cells into neuron-like cells after co-cul-ture with hippocampal slice[J].Brain Res,2004,1029(1):114-119.
- [5]冯林杰,罗卓荆,王晓礽,等.嗅鞘细胞条件培养液对骨髓基质干细胞的诱导分化作用研究[J].中国矫形外科杂志,2006,14(24):1894-1895.
- [6]Chamberlain LJ,Yannas IV,Hsu HP,et al.Near-terminus axonalstructure and function following rat sciatic nerve regeneration througha collagen-GAG matrix in a ten-millimetre gap[J].Neurosci Res,2000,60:666-677.
- [7]Choi BH,Zhu SJ,Kim BY,et al.Transplantation of cultured bonemarrowstromal cells to improve peripheral nerve regeneration[J].O-ral Maxillofac Surg,2005,34:537-542.