中国组织工程研究 ›› 2017, Vol. 21 ›› Issue (21): 3332-3337.doi: 10.3969/j.issn.2095-4344.2017.21.009

• 胚胎干细胞 embryonic stem cells • 上一篇    下一篇

甘草苷对小鼠胚胎脑神经干细胞增殖的影响

李社芳1,苗灵娟2,李 宁3,梁 鹤3,任德启4,郭 健4   

  1. 1河南中医药大学第一临床医学院内科学科,河南省郑州市 450000;2河南省中医药研究院附属医院高血压科,河南省郑州市 450004;3河南中医药大学基础医学院,河南省郑州市 450046;4河南中医药大学第二临床医学院,河南省郑州市 450008
  • 修回日期:2017-02-09 出版日期:2017-07-28 发布日期:2017-08-02
  • 作者简介:李社芳,女,1970年生,汉族,博士,副教授,主要从事中医脑病研究。
  • 基金资助:

    河南省医学科技攻关计划项目(122300410529)

Effect of liquiritin on the proliferation of neural stem cells from the brain of mouse embryos

Li She-fang1, Miao Ling-juan2, Li Ning3, Liang He3, Ren De-qi4, Guo Jian4   

  1. 1Department of Internal Medicine, First Clinical College, Henan University of Chinese Medicine, Zhengzhou 450000, Henan Province, China; 2Department of Hypertension, Affiliated Hospital, Henan Provincial Institute of Chinese Medicine, Zhengzhou 450004, Henan Province, China; 3Basic Medical College, Henan University of Chinese Medicine, Zhengzhou 450046, Henan Province, China; 4Second Clinical College, Henan University of Chinese Medicine, Zhengzhou 450008, Henan Province, China
  • Revised:2017-02-09 Online:2017-07-28 Published:2017-08-02
  • About author:Li She-fang, M.D., Associate professor, Department of Internal Medicine, First Clinical College, Henan University of Chinese Medicine, Zhengzhou 450000, Henan Province, China
  • Supported by:

    the Medical Tackle Key Plan of Henan Province, No. 122300410529

摘要:

文章快速阅读:

文题释义:
神经干细胞:
是一类具有自我更新和多向分化潜能的特殊细胞,主要分布在胚胎和成年哺乳动物中枢神经系统中并存在于胚胎和成体中枢神经系统的多个部位中。神经干细胞具有自我更新、多向分化、对称和不对称等生物学特性。神经干细胞的内在分化程序、细胞外基质、黏附分子及细胞间的相互作用等都与其增殖、凋亡及分化有着密切关系。
甘草苷的功效:甘草苷是甘草的的主要活性成分,属于黄酮类化合物,其有很强的药理活性,是重要的食品添加剂,可作为甜味剂和解毒剂。近来有文献报道,甘草苷对神经细胞有保护和营养作用,如甘草苷对大鼠原代神经细胞的损伤具有保护作用,对原代海马神经元有营养作用,能够促进神经生长因子诱导的PC12神经细胞轴突的生长并对PC12神经细胞有营养作用,甘草苷还能抑制Aβ25-35及谷氨酸的神经毒性,并特异性抑制乙酰胆碱酯酶活力,对人神经母细胞瘤细胞有保护作用。

 

摘要
背景:
甘草苷对神经细胞有保护和营养作用,但甘草苷对小鼠胚胎脑神经干细胞增殖的影响尚未见报道。
目的:研究不同质量浓度甘草苷对小鼠胚胎脑神经干细胞增殖的影响。
方法:从孕14 d昆明白小鼠胚胎脑组织中分离出神经干细胞并培养,采用免疫细胞化学方法鉴定神经干细胞,利用qRT-PCR检测神经干细胞特异性基因表达,MTT法绘制神经干细胞生长曲线。取生长旺盛的神经干细胞,分别以0(对照),1,2,4,8 g/L的甘草苷干预,干预48 h后,MTT法检测细胞增殖。
结果与结论:①培养第5天时,所有单个的神经干细胞全部聚集成球,随着时间的延长,细胞球体积越来越大,细胞球融合成更大的细胞团;②免疫细胞化学鉴定显示,100%的神经干细胞球呈巢蛋白阳性表达;③qRT-PCR检测显示,神经干细胞巢蛋白阳性表达较强,不表达神经元特异性烯醇化酶及胶质纤维酸性蛋白;④神经干细胞刚开始生长缓慢,处于生长缓慢期,第二三天起,细胞增殖迅速,进入指数生长期;第4天后,细胞增殖逐步减缓,细胞整体进入生长平台期;⑤2,4,8 g/L甘草苷组细胞增殖明显高于对照组(P < 0.05),并且随着甘草苷质量浓度的升高,神经干细胞增殖速度逐渐升高;⑥结果表明,2-8 g/L甘草苷能促进小鼠胚胎脑神经干细胞的增殖。

 

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: 0000-0002-8631-3600(李社芳)

关键词: 干细胞, 胚胎干细胞, 神经干细胞, 胚胎脑神经干细胞, 神经系统, 中草药, 甘草苷, 神经保护, Nestin, 增殖

Abstract:

BACKGROUND: Liquiritin has the protective and nutritive effects on neural stem cells. However, the effect of liquiritin on neural stem cells from the brain of mouse embryos remains unclear.
OBJECTIVE: To investigate the effects of different concentrations of liquiritin on the proliferation of neural stem cells from the brain of mouse embryos.
METHODS: Neural stem cells were separated from the embryonic brain of Kunming white mice at the gestational age of 14 days. The identification of embryonic neural stem cells was performed by immunocytochemistry method. The expression of neural stem cells-special genes was determined by qRT-PCR. The cell growth curve was drawn and proliferation of embryonic neural stem cells treated with 0, 1, 2, 4 or 8 g/L liquiritin for 48 hours was measured by MTT assay.
RESULTS AND CONCLUSION: (1) When cultured at day 5, all individual neural stem cells gathered together into neurospheres; with the extension of time, the neurospheres were enlarged, and gathered together into larger cell masses. (2) Results from immunocytochemistry showed that all the floating neurospheres was nestin-positive. Data from qRT-PCR revealed a higher expression of nestin mRNA, but there was no expression of neuron-specific enolase and glial fibrillary acidic protein in the neural stem cells. (4) The growth of neural stem cells was slow at the beginning. After 2-3 days, the cell proliferation quickly entered the exponential phase. After 4 days, the cell proliferation gradually slowed down, and the overall cell growth entered into the platform period. (5) The cell proliferation after treatment with 2, 4 or 8 g/L liquiritin was faster than that in the control group (0 g/L). To conclude, 2-8 g/L liquiritin could increase the proliferation of neural stem cells from the brain of mouse embryos.

 

 

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: Neural Stem Cells, Drugs, Chinese Herbal, Cell Proliferation, Tissue Engineering

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