中国组织工程研究 ›› 2019, Vol. 23 ›› Issue (5): 779-783.doi: 10.3969/j.issn.2095-4344.1542

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

氯倍他索干预鼻黏膜来源外胚层间充质干细胞向少突胶质样细胞分化及机制

王秋平1,徐众华1,卞 璐1,赵 俊1,陈昌胜1,王 震1,史文涛1,张志坚2   

  1. 1南京市高淳人民医院骨科,江苏省南京市 211302;2江苏大学医学院,江苏省镇江市 212001
  • 修回日期:2018-09-07 出版日期:2019-02-18 发布日期:2019-02-18
  • 通讯作者: 张志坚,教授,江苏大学医学院,江苏省镇江市 212001
  • 作者简介:王秋平,男,1984年生,江苏省南京市人,汉族,2007年江苏大学医学院毕业,主治医师,主要从事脊髓损伤和间充质干细胞研究。
  • 基金资助:

    国家自然科学基金地区科学基金项目(81571830);镇江市科技局社会发展项目(SH2008044)

Effect of clobetasol propionate on the differentiation of nasal mucosa-derived ectomesenchymal stem cells into oligodendrocyte-like cells and its mechanism

Wang Qiuping1, Xu Zhonghua1, Bian Lu1, Zhao Jun1, Chen Changsheng1, Wang Zhen1, Shi Wentao1Zhang Zhijian2   

  1. 1Nanjing Gaochun People’s Hospital, Nanjing 211302, Jiangsu Province, China; 2School of Medicine, Jiangsu University, Zhenjiang 212001, Jiangsu Province, China
  • Revised:2018-09-07 Online:2019-02-18 Published:2019-02-18
  • Contact: Zhang Zhijian, Professor, School of Medicine, Jiangsu University, Zhenjiang 212001, Jiangsu Province, China
  • About author:Wang Qiuping, Attending physician, Nanjing Gaochun People’s Hospital, Nanjing 211302, Jiangsu Province, China
  • Supported by:

    the National Natural Science Foundation of China (Regional Fund), No. 81571830; the Social Development Project of Zhenjiang Municipal Science and Technology Department, No. SH2008044

摘要:

文章快速阅读:

文题释义:
少突胶质细胞:
主要分布于中枢神经系统,少突胶质细胞比星形胶质细胞小,其细胞学形态特点为胞突短而少,细胞核呈圆形,小而致密。在灰质中,少突胶质细胞主要位于核周体附近;在白质中,它们并排存在于有髓神经纤维之间,并构成髓鞘。
音猬因子(sonic hedgehog,SHH):是哺乳动物音猬因子信号通路家族中3种蛋白质之一,音猬因子是hedgehog信号通路的最佳研究配体。它在调节脊椎动物器官发生成体干细胞分裂中起着关键作用。

 

摘要
背景:
氯倍他索是临床工作中常用的糖皮质激素类药物,鼻黏膜来源外胚层间充质干细胞在体外具有向少突胶质样细胞分化的潜能,氯倍他索能否促进其向少突胶质样细胞分化及其潜在的机制尚不得知。
目的:观察氯倍他索对鼻黏膜来源外胚层间充质干细胞向少突胶质样细胞分化的影响,探讨其可能的机制。
方法:贴壁筛选法分离培养获取SD大鼠鼻黏膜来源外胚层间充质干细胞,免疫荧光法鉴定其特性和纯度。MTT法检测0-10 μmol/L氯倍他索对鼻黏膜来源外胚层间充质干细胞增殖能力的影响。取生长良好的第3代鼻黏膜来源外胚层间充质干细胞,用含氯倍他索的无血清诱导分化培养液使其向少突胶质样细胞分化,氯倍他索浓度为0,2.5和5 μmol/L。倒置显微镜观察细胞形态的变化,免疫荧光和免疫印迹方法检测少突胶质细胞相关蛋白MBP和OLIG2的表达,免疫印迹法检测SHH信号通路相关蛋白SHH表达水平。
结果与结论:①体外培养的鼻黏膜来源外胚层间充质干细胞高表达vimentin和nestin;②低浓度的氯倍他索可促进细胞增殖;高浓度的氯倍他索则抑制细胞增殖,其中5 μmol/L可能为最适增殖浓度;③鼻黏膜来源外胚层间充质干细胞成少突胶质样细胞诱导3 d后,氯倍他索组出现多极化形态,少突胶质细胞相关蛋白MBP、OLIG2以及SHH信号通路相关蛋白SHH的表达明显高于对照组;④结果表明,氯倍他索可能通过SHH信号通路促进鼻黏膜来源外胚层间充质干细胞向少突胶质样细胞分化。


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程
ORCID:
0000-0001-8812-2886(王秋平)

关键词: 鼻黏膜, 间充质干细胞, 氯倍他索, 少突胶质样细胞, 细胞分化, 鼻黏膜来源细胞, 国家自然科学基金

Abstract:

BACKGROUND: Clobetasol propionate is a commonly used glucocorticoid in clinics. Nasal mucosa-derived ectomesenchymal stem cells (EMSCs) have the potential to differentiate into oligodendrocyte-like cells in vitro. However, the underlying mechanisms by which clobetasol propionate promote the differentiation into oligodendrocyte-like cells are unknown as yet.
OBJECTIVE: To observe the effect of clobetasol propionate on the differentiation of nasal mucosa-derived EMSCs into oligodendrocyte-like cells and to explore its possible mechanisms. 
METHODS: Nasal mucosa-derivedEMSCs were isolated and cultured by adherent screening method, and cell properties and purity were identified using immunofluorescence staining. Cell proliferation of EMSCs was detected by MTT after intervention with 0-10 μmol/L clobetasol propionate. Passage 3 nasal mucosa-derived EMSCs grew well and were induced to differentiate into oligodendrocyte-like cells in the serum-free medium containing clobetasol propionate (0, 2.5 and 5 μmol/L). Cell morphology was then observed by inverted microscope. Expression of oligodendrocyte-associated proteins, myelin basic protein and oligodendrocyte transcription factor 2, was measured by immunofluorescence and western blot assay. Expression of SHH related to the SHH signaling pathway was detected by western blot assay.
RESULTS AND CONCLUSION: EMSCs cultured in vitro highly expressed vimentin and nestin. Clobetasol propionate at a low concentration promoted the proliferation of EMSCs; and on the contrary, clobetasol propionate at a high concentration inhibited the cell proliferation. Therein, 5 μmol/L was the best concentration of clobetasol propionate for cell proliferation. After 3 days of induction, a multi-polarization pattern appeared in the clobetasol propionate group, and the expressions of MBP, OLIG2 and SHH were significantly higher than those in the control group. To conclude, clobetasol propionate may promote the differentiation of EMSCs into oligodendrocyte-like cells via the SHH signaling pathway. 


中国组织工程研究杂志出版内容重点:干细胞;骨髓干细胞;造血干细胞;脂肪干细胞;肿瘤干细胞;胚胎干细胞;脐带脐血干细胞;干细胞诱导;干细胞分化;组织工程

Key words: Clobetasol, Nasal Mucosa, Mesenchymal Stem Cells, Oligodendroglia, Cell Differentiation, Tissue Engineering

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