J4

• 基础研究 • 上一篇    下一篇

PSI诱导PC12细胞帕金森病模型中ERp29蛋白表达

张 瑜1,徐 卉2,张 颖1,韩 威1,胡轶虹1,胡林森1   

  1. 1.吉林大学第一医院神经内科,吉林 长春 130021;2.吉林大学第一医院超声科,吉林 长春 130021
  • 收稿日期:2006-06-08 修回日期:1900-01-01 出版日期:2007-03-28 发布日期:2007-03-28
  • 通讯作者: 胡林森

Expression of ERp29 in model of Parkinson’s disease of PC12 cells induced by proteasome inhibitor

Zhang Yu1,XU Hui2,ZHANG Ying1,HAN Wei1,HU Yi-hong1,HU Lin-sen1   

  1. 1. Department of Neurology, First Hospital, Jilin University,Changchun 130021, China;2. Department of Ultrasound, First Hospital, Jilin University, Changchun 130021, China
  • Received:2006-06-08 Revised:1900-01-01 Online:2007-03-28 Published:2007-03-28
  • Contact: HU Lin-sen

摘要: 目的:探讨泛素-蛋白酶体系统(UPS)功能障碍诱发帕金森病(PD)细胞模型的作用机制,为深入研究PD的发病机制提供理论依据。方法:建立PSI诱导的PC12细胞模型,实验组、对照组分别加入PSI和DMSO(终浓度为10 μmol•L-1)孵育 36 h后提取蛋白,应用荧光差异凝胶电泳(DIGE)系统获得差异蛋白点,运用基质辅助激光解吸/电离飞行时间质谱仪(MALDI-TOF Pro MS)鉴定出差异蛋白。结果:实验组与对照组比较,在36 h可见细胞内嗜酸性类Lewy小体形成及细胞凋亡(细胞核呈固缩状或碎裂状),凋亡百分率为25.53%。实验组内质网蛋白ERp29与对照组比较表达量显著降低,差异有显著性(P<0.01)。结论:内质网应激(ERS)在UPS功能障碍引起PD的病理变化过程中起重要作用。

关键词: 内质网应激, 帕金森病, 泛素-蛋白酶体系统

Abstract: To investigate the pathogenetic mechanism of ubiquitin-proteasome dysfunction in a model of Parkinson’[KG-3]s disease (PD), which can provide the theoretical basis for PD. Methods After establishment of PD model induced by PSI in PC12 cells, proteins of untreated (DMSO) and PSI-treated PC12 cells were extracted 36 h after incubation, and then the maps of the extracted proteins were established by DIGE system. The altered protein spots were identified with MALDI-TOF Pro MS and database searching. Results Thirty-six treatment of PC12 cells with PSI induced the appearance of cytoplasmic Lewy body-like eosinophilic inclusions and apoptosis. The percentage of apoptotic cells was 25.53%. ERp29 were identified by MALDI-TOF Pro MS. The expression of ERp29 decreased in treatment group, compared with normal group(P<0.01). Conclusion Endoplasmic reticulum stress (ERS) may play an important role in the pathogenesis of ubiquitin-proteasome system dysfunction induced PD.

Key words: endoplasmin reticulum stress, Parkinson’s disease, ubiquitin-proteasome system

中图分类号: 

  • R742.5