中国组织工程研究 ›› 2015, Vol. 19 ›› Issue (50): 8172-8176.doi: 10.3969/j.issn.2095-4344.2015.50.024

• 干细胞培养与分化 stem cell culture and differentiation • 上一篇    下一篇

成年大鼠脑膜组织中具有干细胞特性的细胞亚群体外可向神经元诱导分化

刘 德1,李向明2,谷席娟3   

  1. 1聊城市第三人民医院,山东省聊城市 252000;2山东大学第二医院,山东省济南市 250033;3聊城大学医院,山东省聊城市 252000
  • 收稿日期:2015-10-30 出版日期:2015-12-03 发布日期:2015-12-03
  • 通讯作者: 谷席娟,副主任医师,聊城大学医院,山东省聊城市 252000
  • 作者简介:刘德,男,1973年生,山东省聊城市人,汉族,1973年滨州医学院毕业,副主任医师,主要从事神经外科脑肿瘤研究。
  • 基金资助:

    山东省科技攻关项目(2012GG10001020);山东省自然科学基金青年基金项目(ZR2011HQ045)

Neuronal differentiation of cell subsets with stem cell characteristics in adult rat meningeal tissues

Liu De1, Li Xiang-ming2, Gu Xi-juan3   

  1. 1Liaocheng Third People’s Hospital, Liaocheng 252000, Shandong Province, China; 2Second Hospital of Shandong University, Jinan 250033, Shandong Province, China; 3Liaocheng University Hospital, Liaocheng 252000, Shandong Province, China
  • Received:2015-10-30 Online:2015-12-03 Published:2015-12-03
  • Contact: Gu Xi-juan, Associate chief physician, Liaocheng University Hospital, Liaocheng 252000, Shandong Province, China
  • About author:Liu De, Associate chief physician, Liaocheng Third People’s Hospital, Liaocheng 252000, Shandong Province, China
  • Supported by:

    the Scientific Tackle Key Project of Shandong Province, No. 2012GG10001020; the Natural Science Foundation of Shandong Province, No. ZR2011HQ045

摘要:

背景:神经干细胞具有多向分化潜能,可以分化为神经元和神经胶质细胞等,替代受损伤的脑细胞,达到修复神经损伤的目的。
目的:观察成年大鼠脑膜组织中具有干细胞特性细胞亚群的成神经诱导分化能力。
方法:取成年SD大鼠,麻醉后获取脑膜组织制备成细胞悬液,接种在培养皿中进行传代培养,进行Nestin免疫荧光染色。取第3代细胞,用含曲古抑菌素A的完全培养基进行成神经诱导培养,诱导7 d之后采用Westen blotting检测神经细胞相关标志性蛋白NF-200和BM88蛋白的表达。
结果与结论:培养24 h,脑膜细胞中有部分球形细胞发生悬浮,部分细胞出现贴壁生长现象。另外,还可以观察到部分散在球形细胞逐渐形成克隆球,随着体积的不断增大,生长速度呈现下降趋势。免疫细胞化学染色分析干细胞标记物Nestin呈强阳性表达,细胞核使用Hoechst染色之后,荧光显微镜可检测到呈蓝色的细胞核。成神经诱导7 d时相关标志性蛋白NF-200和BM88蛋白均呈明显表达。结果表明,成年SD大鼠脑膜组织中具有干细胞特性的细胞亚群在体外诱导后能够向神经元方向发生分化。 

 

关键词: 干细胞, 分化, 脑膜组织, 大鼠, 成年, 诱导, 分化, 神经干细胞, 神经细胞, 山东省自然科学基金

Abstract:

BACKGROUND: Neural stem cells have the potential to differentiate into neurons and glial cells to replace the injured brain cells, so as to achieve the purpose of repairing nerve injury.
OBJECTIVE: To observe the neuronal differentiation ability of cell subsets with stem cell characteristics in the adult rat meningeal tissues.
METHODS: Under anesthesia, the meningeal tissues were obtained from adult Sprague-Dawley rats to make cell suspension followed by inoculation and subculture. Then, the Nestin immunofluorescence staining was performed. The third generation cells were cultured in vitro with complete culture medium containing trichostatin A. After 7 days of induction, western blot assay was used to detect the expression of NF-200 and BM88 proteins in neural cells.
RESULTS AND CONCLUSION: At 24 hours of culture, some spherical cells were suspended and some cells adherent. In addition, some spherical cells scattered gradually formed the clone spheres, and the growth rate decreased with the increasing volume. The positive expression of Nestin was detected by immunocytochemistry staining, and the cell nucleus was stained blue by Hoechst staining. BM88 and NF-200 proteins were all expressed at 7 days of neural induction. These findings indicate that the cell subsets with stem cell characteristics in the adult rat meningeal tissues can differentiate into neurons after in vitro induction. 
 

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