中国组织工程研究 ›› 2014, Vol. 18 ›› Issue (23): 3739-3744.doi: 10.3969/j.issn.2095-4344.2014.23.022

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

细胞质膜微囊蛋白1敲除小鼠神经干细胞培养与生物学特性

刘柏炎1,2,俞 悦1,易 健1,陈雪梅1,蔡光先1   

  1. 1湖南中医药大学,湖南省长沙市 410007;2益阳医学高等专科学校,湖南省益阳市 413000
  • 修回日期:2014-03-07 出版日期:2014-06-04 发布日期:2014-06-04
  • 作者简介:刘柏炎,男,1970年生,湖南省隆回县人,汉族,2002年中南大学毕业,博士,教授,博士生导师,从事中西医结合防治脑血管疾病及神经干细胞研究。
  • 基金资助:

    国家自然科学基金(30873355,81273989),国家重点基础研究发展计划(973计划)( 2010CB530400),2012年度湖南省高校创新平台开放基金项目(12K089)

Culture and biological characteristics of neural stem cells from caveolin-1 knockout embryonic mice

Liu Bai-yan1, 2, Yu Yue1, Yi Jian1, Chen Xue-mei1, Cai Guang-xian1   

  1. 1Hunan University of Traditional Chinese Medicine, Changsha 410007, Hunan Province, China; 2Yiyang Medical College, Yiyang 413000, Hunan Province, China
  • Revised:2014-03-07 Online:2014-06-04 Published:2014-06-04
  • About author:Liu Bai-yan, M.D., Professor, Doctoral supervisor, Hunan University of Traditional Chinese Medicine, Changsha 410007, Hunan Province, China; Yiyang Medical College, Yiyang 413000, Hunan Province, China
  • Supported by:

    the National Natural Science Foundation of China, No.30873355, 81273989; the Major State Basic Research Development Program of China (973 Program), No.2010CB530400; the Open Innovation Platform Project for Universities in Hunan Province, No.12K089

摘要:

背景:研究发现细胞质膜微囊蛋白1在哺乳动物脑内表达,参与脑的正常发育,能影响脑内神经干细胞的增殖。

目的:从细胞质膜微囊蛋白1敲除小鼠脑内获取神经干细胞并观察其生物学特性。
方法:分别取E14-E16正常C57BL/6胚胎小鼠和细胞质膜微囊蛋白1敲除C57BL/6胚胎小鼠全脑,采用酶消化法获得单细胞悬液,置神经干细胞条件培养基中培养,原代培养7 d后,加入含体积分数10%胎牛血清的DMEM/F12培养基诱导7 d。

结果与结论:从两种胎鼠脑内获取的细胞悬液培养1 d后较多细胞发生死亡,可见单个细胞漂浮于培基中,透光度较好,3 d后逐渐形成悬浮生长的多细胞团。传代后培养板底部可见少量细胞发生贴壁,7 d后可见大量细胞团出现,且细胞质膜微囊蛋白1敲除胎鼠源细胞增殖速度更明显。免疫细胞化学检测显示,两种胎鼠来源细胞团均为巢蛋白阳性,分化细胞可见神经丝蛋白200、胶质纤维酸性蛋白或O4阳性表达;正常C57BL/6胎鼠来源细胞团呈细胞质膜微囊蛋白1阳性表达,而细胞质膜微囊蛋白1敲除C57BL/6胎鼠来源细胞团呈细胞质膜微囊蛋白1表达阴性,且神经干细胞成球速度和成球数量优于正常胎鼠神经干细胞。说明实验成功从细胞质膜微囊蛋白1敲除胎鼠脑内培养出细胞质膜微囊蛋白1缺失神经干细胞,细胞质膜微囊蛋白1可促进神经干细胞的增殖,并抑制其分化。


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


全文链接:

关键词: 干细胞, 培养, 神经干细胞, 细胞质膜微囊蛋白1, 生物学特性, C57BL/6胎鼠, 国家自然科学基金

Abstract:

BACKGROUND: Caveolin-1 is expressed in mammalian brain and involved in the normal development of the brain, which can affect the proliferation of neural stem cells in the brain.

OBJECTIVE: To acquire neural stem cells from caveolin-1 knockout embryonic mice in vitro and study their biological characteristics.
METHODS: The whole brain was separated from C57BL/6 mice and caveolin-1 knockout C57BL/6 mice respectively at encyesis 14-16 days. Single cell suspension was obtained by enzyme digestion, and cultured in the conditioned medium of neural stem cells. Following 7 days of primary culture, the cells were induced in Dulbecco’s modified Eagle’s medium/Ham’s nutrient mixture F-12 containing 10% fetal bovine serum for 7 days. 
RESULTS AND CONCLUSION: The major cells of the cell suspensions from the fetal mouse brain were dead at 1 day after culture, and some single cells floated in the medium and their transmittance were better, and then they gradually formed multicellular balls after 3 days. A small amount of cells were adhered at the bottom of culture plate after passage, and a great amount of cell balls appeared after 7 days. The proliferation rate of neural stem cells from caveolin-1 knockout mice was higher than that from normal mice. The cell balls were nestin-positive and their differentiated cells was positive for neurofilament 200, glial fibrillary acidic protein or O4, respectively. All of the cells from normal mouse brain were positive for caveolin-1, but the cells from caveolin-1 knockout mice were negative for caveolin-1 by immunocytochemistry. Moreover, the speed of cell ball formation and the number of cell balls in neural stem cells from caveolin-1 knockout mice were better than those from normal mice. Caveolin-1 negative neural stem cells were cultured successfully from caveolin-1 knockout mouse brain, and the results show that caveolin-1 can promote the proliferation of neural stem cells and inhibit their differentiation in vitro.

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: stem cells, neural stem cells, caveolins

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