首都医科大学学报 ›› 2006, Vol. 27 ›› Issue (5): 616-619.

• 基础研究 • 上一篇    下一篇

细胞外α-突触核蛋白对MES23.5多巴胺能神经细胞的促增殖作用

张晨1,2, 李昕1, 李尧华1, 韩俊燕1,2, 陈彪1, 于顺1,2   

  1. 1. 首都医科大学宣武医院老年医学研究所神经生物学研究室;2. 首都医科大学低氧医学研究所
  • 收稿日期:2005-09-29 修回日期:1900-01-01 出版日期:2006-10-24 发布日期:2006-10-24
  • 通讯作者: 于顺

Promoting Effects of Extracellular α-Synuclein on the Proliferation of MES23.5 Dopaminergic Neuronal Cells

Zhang Chen1,2, Li Xin1, Li Yaohua1, Han Junyan1,2, Chen Biao1, Yu Shun1,2   

  1. 1. Department of Neurobiology, Beijing Institute of Geriatrics, Xuanwu Hospital, Capital University ofMedical Sciences;2. Institute for Hypoxia Medicine, Capital University of Medical Sciences
  • Received:2005-09-29 Revised:1900-01-01 Online:2006-10-24 Published:2006-10-24

摘要: 目的 研究细胞外α-突触核蛋白(α-synuclein,α-Syn)对MES23.5多巴胺能神经细胞增殖的影响.方法 细胞外施加重组人α-syn,Western blot分析和免疫细胞化学染色观察α-Syn向细胞内的进入和分布,MTT测试神经细胞的增殖.结果 Western blot和免疫细胞化学染色结果均显示,细胞外α-Syn可以进入MES23.5多巴胺神经细胞并促进其增殖,这种促进作用随剂量增加而增强.α-Syn单抗明显抑制α-Syn向细胞内转移,并阻断α-Syn促细胞增殖作用.结论 细胞外α-Syn对多巴胺能神经细胞的增殖具有促进作用.

关键词: α-突触核蛋白, 细胞增殖, 多巴胺神经细胞

Abstract: Objective To study the effects of extracellular α-synuclein (α-Syn) on the proliferation of MES23.5 Dopaminergic Neuronal Cells.Methods The recombinant human α-Syn was extracellularly administrated to the MES23.5 dopaminergic neuronal cells.Immunohistochemistry and Western blot analysis were used to detect the α-Syn entered into the cells.MTT assay was used to measure cell proliferation.Results Extracellularly administered α-Syn entered into the neuronal cells and significantly promoted the proliferation of the cells in a dose-dependent manner.A specific monoclonal antibody against α-Syn blocked the entry of α-Syn into the cells and the cell proliferation.Conclusion Extracellular α-Syn promotes the proliferation of dopaminergic neuronal cells.

Key words: α-synuclein, cell proliferation, dopaminergic neuronal cell

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