中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (32): 5184-5189.doi: 10.3969/j.issn.2095-4344.2014.32.017

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

蛇床子素可促进体外培养神经干细胞的增殖

姚璎珈,胡  昱,李少恒,教亚男,孔  亮,陶震宇,杨静娴   

  1. 辽宁中医药大学,辽宁省大连市  116600
  • 收稿日期:2014-07-18 出版日期:2014-08-06 发布日期:2014-09-18
  • 通讯作者: 杨静娴,教授,博士生导师,辽宁中医药大学,辽宁省大连市 116600
  • 作者简介:姚璎珈,女,1990年生,辽宁省沈阳市人,满族,辽宁中医药大学在读硕士,主要从事神经干细胞修复与再生研究。
  • 基金资助:

    国家自然科学基金(81173580);国家自然科学基金资助对外交流与合作项目(81210108050)

Osthole promotes the proliferation of neural stem cells in vitro

Yao Ying-jia, Hu Yu, Li Shao-heng, Jiao Ya-nan, Kong Liang, Tao Zhen-yu, Yang Jing-xian   

  1. Liaoning University of Traditional Chinese Medicine, Dalian 116600, Liaoning Province, China
  • Received:2014-07-18 Online:2014-08-06 Published:2014-09-18
  • Contact: Yang Jing-xian, Professor, Doctoral supervisor, Liaoning University of Traditional Chinese Medicine, Dalian 116600, Liaoning Province, China
  • About author:Yao Ying-jia, Studying for master’s degree, Liaoning University of Traditional Chinese Medicine, Dalian 116600, Liaoning Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 81173580; Projects of International Cooperation and Exchanges NSFC, No. 81210108050

摘要:

背景:神经干细胞具有自我更新和多向分化潜能,但正常情况下,神经干细胞数目太少,且大部分处于静息状态,促进其增殖是神经干细胞治疗神经退行性疾病的关键。
目的:观察蛇床子素对体外培养的神经干细胞增殖作用的影响,分析其促进增殖能力的作用机制。
方法:体外培养神经干细胞,在增殖培养基中培养至第3代,加入不同浓度的蛇床子素 (10,50和100 μmol/L)作用24 h用CCK-8法检测细胞活力,再培养3,5,7 d后测量神经球半径,用免疫荧光组化法计数Ki67阳性细胞数目;再培养3 d后利用RT-PCR技术检测神经干细胞中Notch 1、Hes 1和 Mash 1基因表达的情况。
结果与结论:与正常组比较,50,100 μmol/L的蛇床子素具有明显促进神经干细胞增殖能力的作用,100 μmol/L作用最为显著,可引起Notch 1基因、Hes 1基因上调表达,对Mash 1基因基本无影响,说明蛇床子素对体外培养的神经干细胞具有促进增殖作用,其作用机制可能与激活Notch信号通路上的Notch 1、Hes 1基因有关。


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


全文链接:

关键词: 干细胞, 培养, 神经干细胞, 鉴定, 增殖, 蛇床子素, Notch信号通路, Notch 1, Hes 1, Mash 1, 阿尔茨海默病, 国家自然科学基金

Abstract:

BACKGROUND: Neural stem cells have self-renewal and multidirectional differentiation potential, but under normal circumstances, the number of neural stem cells is less, and most cells are in the resting state. Thus, to promote the proliferation of neural stem cells is the key to the treatment of neurodegenerative diseases.
OBJECTIVE: To investigate the effects of osthole on the proliferation of neural stem cells cultured in vitro, and to analyze its mechanism underlying promoting the proliferation.
METHODS: Neural stem cells were cultured in vitro, and passage 3 cells were cultured with different concentrations of osthole(10, 50 and 100 μmol/L). After 24 hours, cell vitality was determined by cell counting kit-8. After 3, 5, 7 days of further culture, the radius of neurospheres was measured, and Ki67-positive cells were counted by immunofluorescence staining. Meanwhile, after 3 days of further culture, the gene expression of Notch 1, Hes 1 and Mash 1 in neural stem cells was detected by RT-PCR.
RESULTS AND CONCLUSION: Compared with the control group, 50, 100 μmol/L osthole could obviously promote the proliferation ability of neural stem cells. 100 μmol/L osthole had the most significant effect and increased the expression of Notch 1 gene, Hes 1 gene, but it had no effect on Mash 1 gene. These results suggest that osthole can promote proliferation of neural stem cells cultured in vitro and its mechanism may be associated with activation of Notch 1 gene and Hes 1 gene in Notch 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


全文链接:

Key words: neural stem cells, heracleum, cell proliferation, signal transduction

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