陈春暖;陈祥荣;蔡若蔚;曹学兵;王涛;

• 1:福建医科大学附属第二医院神经内科
• 2:华中科技大学同济医学院附属协和医院神经内科

摘要(Abstract)：

目的探讨鱼藤酮诱导SH-SY5Y细胞建立帕金森病(Parkinson disease,PD)细胞模型的方法。方法实验分为空白对照组及鱼藤酮0.5μmol/L、1.0μmol/L、2.5μmol/L、5.0μmol/L组共5组,各组分别于鱼藤酮加入24h、48h点,观察SH-SY5Y细胞形态变化,采用MTT比色法检测细胞活力;于24h时采用Western blot法检测细胞α-突触核蛋白(α-synuclein)表达量;对空白对照组及鱼藤酮0.5μmol/L、1.0μmol/L组于24h、48h行HE染色观察细胞内包涵体形成情况。以激光共聚焦免疫荧光法观察鱼藤酮1.0μmol/L组24h时α-synuclein的分布情况。结果空白对照组细胞生长较密,神经突起细长;在鱼藤酮药物组24时,0.5μmol/L组细胞突起变短,1.0μmol/L组细胞突起短缩更明显,2.5μmol/L组胞体肿胀明显,5.0μmol/L组圆缩细胞增多;各浓度组48h时与24h时比较,细胞突起变短、细胞肿胀、圆缩更明显。MTT试验显示1.0μmol/L鱼藤酮24h组和0.5μmol/L鱼藤酮48h组分别使细胞活性下降到空白对照组的(86.06±9.06)%和(62.06±7.13)%,与对照组比较差异均具有统计学意义(P<0.05)。Western blot结果显示鱼藤酮0.5、1.0、2.5和5.0μmol/L组SH-SY5Y细胞内α-synuclein相对表达水平分别为(1.23±0.11)、(1.41±0.20)、(1.77±0.09)和(1.31±0.28),其中1.0μmol/L、2.5μmol/L鱼藤酮组α-synuclein水平高于空白对照组(P<0.05);HE染色显示,在1.0μmol/L鱼藤酮24h组和0.5μmol/L鱼藤酮48h组均观察到细胞质内出现嗜伊红、边界清楚的类路易小体样包涵体;免疫荧光染色显示在1.0μmol/L鱼藤酮24h组观察到细胞内出现颗粒状α-synuclein免疫染色阳性聚集体,可被Thioflavin S共定位。结论 1.0μmol/L鱼藤酮24h诱导SH-SY5Y细胞所建立的PD模型能够很好地模拟PD病理改变,可作为研究PD发病机制的细胞模型。

关键词(KeyWords)： 帕金森病;鱼藤酮;凋亡;路易小体;α-突触核蛋白

Abstract:

Keywords:

基金项目(Foundation): 泉州市科技局科技计划重点项目(2014Z45);; 福建省卫生计生委青年科研课题(2014-1-67);; 福建省自然科学基金青年创新项目(2015J05148)

作者(Author): 陈春暖;陈祥荣;蔡若蔚;曹学兵;王涛;

Email:

DOI:

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