首都医科大学学报 ›› 2015, Vol. 36 ›› Issue (1): 103-110.doi: 10.3969/j.issn.1006-7795.2015.01.020

• 基础研究 • 上一篇    下一篇

Bmi-1基因对人类胚胎纹状体来源神经干细胞凋亡的影响

赵春松1,2, 邹海强3, 闫晓明4, 陈凌5, 王佳茵1,2, 关云谦1,2, 张愚1,2   

  1. 1. 首都医科大学宣武医院细胞生物室, 北京 100053;
    2. 教育部神经变性病重点实验室, 北京 100053;
    3. 广州军区广州总医院神经内科, 广州 510010;
    4. 首都医科大学宣武医院功能神经外科, 北京 100053;
    5. 首都医科大学宣武医院神经外科, 北京 100053
  • 收稿日期:2014-09-11 出版日期:2015-02-21 发布日期:2015-01-31
  • 通讯作者: 关云谦 E-mail:guanyunqian@aliyun.com
  • 基金资助:
    国家重点基础研究发展计划资助项目(973计划)(2012CBA01300);国家高技术研究发展计划资助项目(863计划)(2011AA020106);北京市自然科学基金(7102078);北京市科技新星项目(2009B22);北京市科委健康培育项目(Z111107067311033);北京市教育委员会科技计划重点项目(KZ201310025024).

Effect of Bmi-1 on apoptosis of human fetal striatum derived neural stem cells

Zhao Chunsong1,2, Zou Haiqiang3, Yan Xiaoming4, Chen Ling5, Wang Jiayin1,2, Guan Yunqian1,2, Zhang Y. Alex1,2   

  1. 1. Department of Cell Biology, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Beijing 100053, China;
    2. Key Laboratory of Neurodegeneration, Ministry of Education, Beijing 100053, China;
    3. Department of Neurology, The General Hospital of Guangzhou Military Command in Guangzhou, Guangzhou 510010, China;
    4. Department of Function Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China;
    5. Department of Neurosurgery, Xuanwu Hospital, Capital Medical University, Beijing 100053, China
  • Received:2014-09-11 Online:2015-02-21 Published:2015-01-31
  • Supported by:
    This study was supported by National Program on Key Basic Research Project (2012CBA01300);National High Technology Research and Development Program of China (2011AA020106); Natural Science Foundation of Beijing (7102078); Beijing Nova Program of Science and Technology (2009B22); Beijing Municipal Science and Technology Commission (Z111107067311033); Key Project of Beijing Municipal Education Commission Science and Technology Program(KZ201310025024).

摘要: 目的 探讨Bmi-1基因对人类胚胎纹状体来源神经干细胞(neural stem cell, NSC)凋亡的影响.方法 提取16~18周自然流产胚胎脑组织纹状体的NSC,体外培养至3~5代,用慢病毒载体对其进行Bmi-1基因的RNA干扰和过表达回复.观察Bmi-1基因对体外NSC凋亡的影响.结果 在感染后2 h和3 d两个时间点,Bmi-1基因的RNA干扰显著增加了体外培养的NSC的凋亡率.结论 Bmi-1基因对于体外培养的NSC具有抑制其凋亡的作用,在分析该基因对NSC增生、自我更新等生物学属性的影响时,应当将Bmi-1基因的抗凋亡作用考虑在内.

关键词: 神经干细胞, 凋亡, Bmi-1, 癌基因

Abstract: Objective To explore the effect of Bmi-1 on the apoptosis of human fetal striatum derived neural stem cell (NSC). Methods The NSC was isolated from the striatum of 16-18 week fetus suffered from accidental spontaneous abortion, cultured and passaged 3-5 times in vitro. Bmi-1RNA interference and rescue (over-expression of Bmi-1) experiments were performed by lentivirus. The effects of Bmi-1 on the apoptosis of NSC were then observed.Results The Bmi-1 transcription of human striatum derived NSCs was decreased significantly by RNAi and was reversed by rescue experiments(overexpression of Bmi-1). Correspondingly, both at the time points of 2h and 3d after passaging, the RNAi of Bmi-1 increased the apoptosis significantly. Conclusion Given human fetal striatum derived NSCs, Bmi-1 inhibited their apoptosis in vitro. In the cases studying the effect of Bmi-1 on the self-renewal, proliferation of NSC, the anti-apoptosis effect of Bmi-1 should be taken into consideration.

Key words: neural stem cell, apoptosis, Bmi-1, oncogene

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