首都医科大学学报 ›› 2014, Vol. 35 ›› Issue (5): 601-603.doi: 10.3969/j.issn.1006-7795.2014.05.016

• α-突触核蛋白改变对神经元的影响 • 上一篇    下一篇

α-突触核蛋白对大脑海马神经元NMDA受体影响的研究

陈予东1,2, 杨巍巍1,2, 李昕1,2, 于顺1,2   

  1. 1. 首都医科大学宣武医院神经生物学研究室 教育部神经变性病重点实验室, 北京 100053;
    2. 北京市老年病医疗研究中心分子诊断实验室, 北京 100053
  • 收稿日期:2014-07-21 出版日期:2014-10-21 发布日期:2014-10-20
  • 通讯作者: 于顺 E-mail:yushun103@163.com
  • 基金资助:

    国家自然科学基金(81000162)。

Effects of alpha-syn of N-methy-D-asparatic acid receptor in hippocampus neurons

Chen Yudong1,2, Yang Weiwei1,2, Li Xin1,2, Yu Shun1,2   

  1. 1. Department of Neurobiology, Xuanwu Hospital, Capital Medical University; Key Laboratory of Neurodegenerative Diseases, Ministry of Education, Beijing 100053, China;
    2. Beijing Gariatric Medical and Clinical Center, Beijing 100053, China
  • Received:2014-07-21 Online:2014-10-21 Published:2014-10-20
  • Supported by:

    This study was supported by National Natural Science Foundation of China(81000162).

摘要:

目的 研究α-突触核蛋白(α-Synuclein,α-Syn)对海马神经元N-甲基-D-天门冬氨酸受体(N-methyl-D-aspartate receptors, NMDARs)功能的影响。方法 采用全细胞膜片钳记录模式记录正常培养10~12 d 左右的海马神经元和经α-Syn处理1 h 的海马神经元NMDA诱发电流。结果 与正常培养10~12 d 左右的海马神经元相比,经α-Syn处理的海马神经元NMDA诱发电流明显减小。结论 α-Syn可减少海马神经元膜上NMDARs数量,并抑制NMDARs活性。

关键词: α-突触核蛋白, NMDA受体, 全细胞膜片钳

Abstract:

Objective To elucidate the mechanisms of α-Syn inhibiting N-methy-D-asparatic acid(NMDA)receptors activities in hippocampal neurons.Methods Whole-cell patch-clamp recording was used to assess the effects of α-Syn on the NMDA currents in normally cultured hippocampal neurons. Results Peak amplitude of NMDA-evoked currents in cultured hippocampal neurons decreased significantly compared with that of NMDA currents in normally cultured hippocampal neurons. Conclusion These results suggest that α-Syn reduce the number of hippocampal neuron membrane NMDARs, and inhibit the activity of NMDARs.

Key words: α-synuclein (α-Syn), NMDA receptors, whole-cell patch clamp

中图分类号: