首都医科大学学报 ›› 2009, Vol. 30 ›› Issue (5): 607-610.doi: 10.3969/j.issn.1006-7795.2009.05.008

• PD的发病机制与早期诊断 • 上一篇    下一篇

α-突触核蛋白促进大鼠原代培养神经元突起生长

刘光伟1, 王鹏2, 李尧华1, 李昕1, 何欣2, 于顺1   

  1. 1. 首都医科大学宣武医院老年病研究所神经生物学研究室,神经变性病教育部重点实验室;2. 北华大学医学院基础医学部人体解剖学教研室
  • 收稿日期:2009-07-16 修回日期:1900-01-01 出版日期:2009-10-21 发布日期:2009-10-21
  • 通讯作者: 于顺

α-Synuclein Promotes Neurite Outgrowth of Primarily Cultured Rat Brain Neurons

LIU Guang-wei1, WANG Peng2, LI Yao-hua1, LI Xin1, HE Xin2, YU Shun1   

  1. 1. Department of Neurobiology, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital Medical University, Key Laboratory for Neurodegenerative Diseases of Ministry of Education;2. Department of Human Anatomy, School of Medicine, Beihua University
  • Received:2009-07-16 Revised:1900-01-01 Online:2009-10-21 Published:2009-10-21

摘要: 目的 研究人α-突触核蛋白(α-Synuclein,α-Syn)对神经元突起生长的作用。方法 原代培养新生大鼠大脑皮质神经元,细胞外添加α-Syn蛋白,测定不同时间神经元突起的长度;观察添加不同浓度的α-Syn蛋白后神经元突起的生长情况。结果 α-Syn处理组神经元突起的平均长度在培养1 h、2 h和4 h时均明显大于对照组,α-Syn的这一作用可被其特异性单克隆抗体阻断;向培养基中添加不同浓度的α-Syn后,神经元突起的长度随α-Syn浓度的增加而增加。结论 α-Syn具有促进神经元突起生长的作用,并且呈明显的量-效关系。

关键词: α-突触核蛋白, 神经元, 突起, 大鼠

Abstract: Objective To investigate the effect of α-Synuclein(α-Syn) on the neurite outgrowth of brain neurons. Methods Neurons isolated from the neocortex of newborn rats were cultured and α-Syn was added into the culture medium to observe the effect of the protein on the neurite outgrowth of the neurons. In addition, the effect of different concentrations of α-Syn on the neurite outgrowth was studied. Results The mean neurite length of the neurons treated with α-Syn was significantly longer than that of control neurons at 1 h, 2 h and 4 h after adding α-Syn. The effect of α-Syn on neurite outgrowth was enhanced with the increase of α-Syn concentration and was reversed by anti-α-Syn monoclonal antibody. Conclusion α-Syn can promote neurite outgrowth of primary rat brain neurons in a dose-dependent manner.

Key words: α-synuclein, neuron, neurite, rat

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