基础医学与临床 ›› 2019, Vol. 39 ›› Issue (8): 1085-1090.

• 研究论文 • 上一篇    下一篇

重组SHH腺病毒纤维蛋白缓释支架对神经干细胞增殖与分化的影响

孙勇1,陈平波1,史文涛1,杨开元1,毕士奇1,张志坚1,徐晓峰2   

  1. 1. 江苏大学医学院
    2. 江苏大学附属医院
  • 收稿日期:2018-07-23 修回日期:2018-11-02 出版日期:2019-08-05 发布日期:2019-07-16
  • 通讯作者: 孙勇 E-mail:407304331@qq.com
  • 基金资助:
    TG2/SHH基因修饰EMSC-Fibrin支架对NSCs命运调控机制及修复脊髓损伤研究

Effect of recombinant SHH adenovirus fibrin slow-release scaffold on proliferation and differentiation of neural stem cells

  • Received:2018-07-23 Revised:2018-11-02 Online:2019-08-05 Published:2019-07-16
  • Supported by:
    TG2/SHH gene modified EMSCs-Fibrin scaffolds regulating the NSCs

摘要: 目的 研究包含重组SHH腺病毒的纤维蛋白缓释支架对神经干细胞(NSCs)增殖与分化的影响。方法 实验分组:FG-SHH组(将NSCs种植于重组SHH腺病毒-支架组)和对照组(controls)(以培养板、重组SHH腺病毒转染组(SHH)、纤维蛋白胶支架组(FG)为对照组);体外分离培养并鉴定NSCs,构建重组SHH腺病毒纤维蛋白缓释支架,用免疫荧光和免疫印迹方法测定转染效率; MMT法检测细胞增殖活力;免疫荧光和免疫印迹法检测上述各组细胞表达神经细胞相关蛋白:β微管蛋白(β-tubulinⅢ),髓磷脂碱性蛋白(MBP)和胶质纤维酸性蛋白(GFAP)的表达状态。结果 体外培养的NSCs高表达nestin;转染重组SHH腺病毒后NSCs可稳定表达SHH;FG-SHH支架促NSCs增殖能力较强,并且FG-SHH组β-tubulinⅢ及MBP阳性细胞率和蛋白表达水平均高于对照组(p<0.05),FG-SHH组GFAP的阳性细胞率和蛋白表达水平低于对照组(p<0.05);结论 重组SHH腺病毒纤维蛋白缓释支架可以促进NSCs的增殖及其向神经元和少突胶质细胞分化,并抑制星形胶质细胞分化。

关键词: [关键词] 神经干细胞, 纤维蛋白支架, 增殖, 分化, SHH

Abstract: Objective To study the effects of fibrin scaffold that can release recombinant SHH adenovirus slowly on the proliferation and differentiation of neural stem cells (NSCs) . Methods Experimental group: NSCs were planted in recombinant SHH adenovirus-scaffold group, culture plate, recombinant SHH adenovirus transfection group, fibrin scaffold group as control group(Controls). The neural stem cells were isolated, cultured and identified in vitro ; Construction of fibrin scaffold that can release recombinant SHH adenovirus slowly. The efficiency of transfection was determined by immunofluorescence and Western blotting. The cell proliferation was tested by MTT. Immunofluorescence and immunoblotting were used to detect the expression of β-tubulin III, and MBP and GFAP in NSCs after inducing in each group. Results NSCs cultured in vitro expressed nestin highly. Data shows, NSCs stably expressed SHH after transfection with recombinant SHH adenovirus; FG-SHH scaffold can promote the proliferation of NSCs, and the positive rates and protein expression.

Key words: [Key words] Neural stem cells, Fibrin glue scaffold, Proliferation, Differentiation, SHH

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