中国组织工程研究 ›› 2013, Vol. 17 ›› Issue (16): 2913-2920.doi: 10.3969/j.issn.2095-4344.2013.16.009

• 材料生物相容性 material biocompatibility • 上一篇    下一篇

新型神经导管复合材料与骨髓间充质干细胞的相容性

胡  辉1, 2,张伟才1, 2,黄继锋2,严琼娇3,殷义霞3,李世普3   

  1. 1 南方医科大学研究生院,广东省广州市  510515
    2 解放军广州军区武汉总医院骨科,湖北省武汉市  430070
    3 武汉理工大学生物材料与工程研究中心,湖北省武汉市  430070
  • 收稿日期:2013-02-19 修回日期:2013-03-23 出版日期:2013-04-16 发布日期:2013-04-16
  • 通讯作者: 黄继锋,博士,主任医师,解放军广州军区武汉总医院骨科,湖北省武汉市 430070 huangjifenggk@yahoo.com.cn
  • 作者简介:胡辉★,男,1986年生,江西省景德镇市人,汉族,南方医科大学在读硕士,主要从事创伤骨科及显微外科修复重建的研究。277931568@qq.com
  • 基金资助:

    武汉市科技攻关计划项目(编号:200960323125),课题名称:可吸收周围神经修复制品的应用研究与临床实验。

Cytocompatibility between novel nerve conduit composite materials and bone marrow mesenchymal stem cells

Hu Hui 1, 2 , Zhang Wei-cai 1, 2, Huang Ji-feng 2, Yan Qiong-jiao 3, Yin Yi-xia 3, Li Shi-pu3   

  1. 1 Graduate School, Southern Medical University, Guangzhou  510515, Guangdong Province, China
    2 Department of Orthopedics, Wuhan General Hospital of Guangzhou Military Command, Wuhan  430070, Hubei Province, China
    3 Research Center of Biomaterials and Engineering, Wuhan University of Technology, Wuhan  430070, Hubei Province, China
  • Received:2013-02-19 Revised:2013-03-23 Online:2013-04-16 Published:2013-04-16
  • Contact: Huang Ji-feng, Doctor, Chief physician, Department of Orthopedics, Wuhan General Hospital of Guangzhou Military Command, Wuhan 430070, Hubei Province, China huangjifenggk@yahoo.com.cn
  • About author:Hu Hui★, Studying for master’s degree, Graduate School, Southern Medical University, Guangzhou 510515, Guangdong Province, China; Department of Orthopedics, Wuhan General Hospital of Guangzhou Military Command, Wuhan 430070, Hubei Province, China 277931568@qq.com
  • Supported by:

    the Tackle Key Program of Wuhan City, No. 200960323125*

摘要:

背景:理想的神经修复材料要有良好的生物相容性、生物可降解性、可塑性以及一定的机械强度。
目的:观察自行研制的精氨酸-甘氨酸-天门冬氨酸多肽接枝聚(羟基乙酸-L-赖氨酸-乳酸)/聚乳酸/β-磷酸三钙/神经生长因子复合材料与大鼠骨髓间充质干细胞的细胞相容性。
方法:将从SD大鼠骨髓中分离纯化的第3代骨髓间充质干细胞与精氨酸-甘氨酸-天门冬氨酸多肽接枝聚(羟基乙酸-L-赖氨酸-乳酸)/聚乳酸/β-磷酸三钙/神经生长因子复合材料或浸提液共同培养作为实验组,并以含体积分数10%胎牛血清的培养液培养骨髓间充质干细胞作为对照组。观察细胞在复合材料上的生长、存活及凋亡情况。
结果与结论:MTT检测结果显示,共培养5,7 d,实验组吸光度值高于对照组(P < 0.05);流式细胞仪Annexin V-FITC/PI双染法结果显示,实验组细胞凋亡率显著低于对照组(P < 0.05);扫描电镜观察见骨髓间充质干细胞在精氨酸-甘氨酸-天门冬氨酸多肽接枝聚(羟基乙酸-L-赖氨酸-乳酸)/聚乳酸/β-磷酸三钙/神经生长因子复合材料表面生长良好,胞体发出多个突起,并交织成网状,呈典型的神经元样细胞表现。可见精氨酸-甘氨酸-天门冬氨酸多肽接枝聚(羟基乙酸-L-赖氨酸-乳酸)/聚乳酸/β-磷酸三钙/神经生长因子复合材料与骨髓间充质干细胞具有良好的细胞相容性,可作为优良的载体用于构建人工仿生神经。

关键词: 生物材料, 材料生物相容性, 周围神经损伤, 精氨酸-甘氨酸-天门冬氨酸多肽接枝聚(羟基乙酸- L-赖氨酸-乳酸)/聚乳酸/β-磷酸三钙/神经生长因子, 骨髓间充质干细胞, 细胞凋亡, 人工神经, 神经组织工程, 其他基金

Abstract:

BACKGROUND: Ideal nerve repair materials are characterized as good biocompatibility, biodegradability, plasticity, and certain mechanical strength.
OBJECTIVE: To evaluate the cytocompatibility of rat bone marrow mesenchymal stem cells with (glycolic acid-L-lysine-lactic acid)/poly lactic acid/β-tricalcium phosphate/nerve growth factor composites.
METHODS: Passage 3 bone marrow mesenchymal stem cells which were isolated from Sprague-Dawley rats were co-cultured with (glycolic acid-L-lysine-lactic acid)/poly lactic acid/β-tricalcium phosphate/nerve growth factor composite materials or their extracts, serving as experimental control. Another bone marrow mesenchymal stem cells cultured in the culture medium containing 10% fetal bovine serum served as controls. Cell growth, survival and apoptosis on the composite materials were observed.
RESULTS AND CONCLUSION: Results from 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay showed that absorbance values in the experimental group were higher than those in the control group after co-culture for days 5 and 7 (P < 0.05). Annexin V-FITC/PI double staining results showed that the apoptosis rate of the experimental group was significantly lower than that of the control group (P < 0.05). Under a scanning electron microscope, bone marrow mesenchymal stem cells grew well on the surface of (glycolic acid-L-lysine-lactic acid)/poly lactic acid/β-tricalcium phosphate/nerve growth factor composite materials. Many protrusions ran out from the cells, and they were woven into a mesh, which was typical performance of neuron-like cells. These findings indicate that (glycolic acid-L-lysine-lactic acid)/poly lactic acid/β-tricalcium phosphate/nerve growth factor composite materials have good cytocompatibility with bone marrow mesenchymal stem cells, which can be regarded as an excellent carrier for artificial nerve construction.

Key words: biomaterials, material biocompatibility, peripheral nerve injury, (glycolic acid-L-lysine-lactic acid)/poly lactic acid/beta-tricalcium phosphate/nerve growth factor, bone marrow mesenchymal stem cells, apoptosis, artificial nerve, nerve tissue engineering, other grants-supported paper

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