中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (6): 877-882.doi: 10.3969/j.issn.2095-4344.2017.06.010

• 药物控释材料 drug delivery materials • 上一篇    下一篇

碱性成纤维细胞生长因子-壳聚糖载体诱导神经干细胞分化及与肌细胞的共培养

翟婧妍1,段红梅1,尚俊奎1,杨朝阳1,2,李晓光1,2 
  

  1. 1首都医科大学神经生物学系,北京市  100069;2北京航空航天大学生物与医学工程学院,北京市  100191
  • 收稿日期:2017-01-16 出版日期:2017-02-28 发布日期:2017-03-16
  • 通讯作者: 李晓光,博士,教授,首都医科大学神经生物学系,北京市100069;北京航空航天大学生物与医学工程学院,北京市 100191
  • 作者简介:翟婧妍,女,1987年生,黑龙江省哈尔滨市人,首都医科大学在读硕士,主要从事应用生物材料在体外构建神经肌肉接头及其影响的研究。
  • 基金资助:

    国家自然科学基金国际合作与交流项目(31320103903);国家自然科学基金项目(31130022)

Basic fibroblast growth factor-chitosan carrier induces neural stem cells to differentiate into neurons followed by co-culture with myocytes

Zhai Jing-yan1, Duan Hong-mei1, Shang Jun-kui1, Yang Zhao-yang1, 2, Li Xiao-guang1, 2 
  

  1. 1Department of Neurobiology, Capital Medical University, Beijing 100069, China; 2School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
  • Received:2017-01-16 Online:2017-02-28 Published:2017-03-16
  • Contact: Li Xiao-guang, M.D., Professor, Department of Neurobiology, Capital Medical University, Beijing 100069, China; School of Biological Science and Medical Engineering, Beihang University, Beijing 100191, China
  • About author:Zhai Jing-yan, Studying for master’s degree, Department of Neurobiology, Capital Medical University, Beijing 100069, China
  • Supported by:

    Fibroblast Growth Factor 2; Neurons; Tissue Engineering
    Funding: the International Cooperation and Communication Project of National Natural Science Foundation of China, No. 31320103903; the National Natural Science Foundation of China, No. 31130022

摘要:

文章快速阅读:

 

文题释义:
壳聚糖载体
:通过缓慢、持续释放碱性成纤维细胞生长因子长达14周,为细胞分化提供良好生长环境,并且避免了长期多次注射所带来的感染风险及水溶性生物分子的易扩散失效的弊病。
神经干细胞:成年体内中枢神经系统神经干细胞的发现为治疗脑和脊髓损伤、脑卒中、神经退行性疾病等带来了希望。但诱导神经干细胞向神经元分化成为了近年来的研究热点。应用壳聚糖载体能够体外高比例诱导神经干细胞向神经元分化,分化比例达74%。

背景:神经干细胞具有自我更新和多向分化的潜能,高比例诱导其向神经元分化具有很大的应用前景。
目的:探讨碱性成纤维细胞生长因子-壳聚糖载体体外对神经干细胞向神经元分化的影响,及分化的神经元与肌细胞共培养是否能形成突触样联系。
方法:纯化后的神经干细胞分别与单纯壳聚糖、可溶性碱性成纤维细胞生长因子及碱性成纤维细胞生长因子-壳聚糖载体共培养。诱导7 d后,通过β-tubulinⅢ染色观察向神经元的分化;通过β-tubulinⅢ和ChaT染色观察向胆碱能神经元的分化;通过β-tubulinⅢ和MHC染色观察和肌细胞之间的突触联系。
结果与结论:碱性成纤维细胞生长因子-壳聚糖载体组,分化形成神经元的比例是74%,显著高于其他2组,分化的神经元与共培养的肌细胞能形成突触样联系。提示碱性成纤维细胞生长因子-壳聚糖载体体外能够促进神经干细胞的分化,且分化形成的神经元能与共培养的肌细胞形成突触样联系。

关键词: 生物材料, 材料相容性, 碱性成纤维细胞生长因子, 壳聚糖, 神经干细胞, 肌细胞, 突触, 共培养, 国家自然科学基金

Abstract:

BACKGROUND: Neural stem cells (NSCs) hold self-renewal and multi-directional differentiation potential. NSCs differentiation into neurons in high proportion under induction conditions exhibits broad application prospect.
OBJECTIVE: To explore the effect of basic fibroblast growth factor (bFGF)-chitosan carrier on the NSCs differentiation into neurons in vitro, and whether the differentiated neurons could form synaptic-like connection with myocytes.
METHODS: After purification, the NSCs were co-cultured with chitosan, soluble bFGF or bFGF-chitosan carrier. After 7-day induction, the NSCs differentiation into neurons was observed by immunofluorescence staining of beta tubulin III. The NSCs differentiation into cholinergic neurons was observed through double immunofluorescence staining of ChaT and beta tubulin III. The synaptic-like connection between the neurons and myocytes was observed by triple staining of beta tubulin III and MHC.
RESULTS AND CONCLUSION: The percentage of differentiated neurons in the bFGF-chitosan carrier group was 74%, which was significantly higher than that in the other two groups. Additionally, the synaptic-like connection formed between the differentiated neurons and myocytes. To conclude, the bFGF-chitosan carrier promotes the NSCs differentiation into neurons to form synaptic-like connection with the co-cultured myocytes.

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