天然产物研究与开发 ›› 2021, Vol. 33 ›› Issue (5): 831-836.doi: 10.16333/j.1001-6880.2021.5.015

• 开发研究 • 上一篇    下一篇

乌头碱抑制GSK-3β对抗β淀粉样蛋白诱导的神经细胞损伤

卫智权1#,包传红2#,陈仪新2,阎莉3*   

  1. 1广西中医药大学 广西中医基础研究重点实验室;2广西中医药大学 广西中药药效研究重点实验室;3广西中医药大学壮医药学院,南宁 530200

  • 出版日期:2021-05-28 发布日期:2021-06-01
  • 基金资助:
    国家自然科学基金(81573938);广西中医基础研究重点实验室开放课题(16-380-58-09,K201137907)

Aconitine attenuates neuronal damage induced by β-amyloid via inhibition of GSK-3β

WEI Zhi-quan1#,BAO Chuan-hong2#,CHEN Yi-xin2,YAN Li3*   

  1. 1Guangxi Key Laboratory of Chinese Medicine Foundation Research,Guangxi University of Chinese Medicine;2 Guangxi Key Laboratory of Efficacy Study on Chinese Materia Medica,Guangxi University of Chinese Medicine;3 Zhuang Medical College,Guangxi University of Chinese Medicine,Nanning 530200,China

  • Online:2021-05-28 Published:2021-06-01

摘要: 本研究旨在探讨乌头碱抑制糖原合成酶激酶3β(GSK-3β)对抗β淀粉样蛋白片段1-40(Aβ1-40)诱导的神经细胞损伤的药理作用。基于细胞安全性测试设置5 nmol/L为后续实验的乌头碱适宜浓度。以20 μmol/L的Aβ1-40孵育24 h建立SH-SY5Y神经细胞损伤细胞模型。设置3个实验分组:正常对照组、Aβ1-40细胞损伤模型对照组、乌头碱干预组,后者以5 nmol/L的乌头碱预孵育12 h。ELISA检测细胞培养上清液乳酸脱氢酶(LDH),流式细胞术分析细胞凋亡与坏死,Western blotting检测细胞GSK-3β磷酸化水平。结果显示,乌头碱干预组细胞培养上清液LDH水平、细胞凋亡率与坏死率以及细胞的GSK-3β磷酸化水平均显著低于模型对照组,提示乌头碱可显著减轻Aβ1-40导致的细胞损伤,此作用可能与其抑制GSK-3β过磷酸化有关。

关键词: 乌头碱, 阿尔茨海默病, β淀粉样蛋白, 糖原合成酶激酶3β, 神经细胞损伤

Abstract:

This research was designed to investigate the pharmacological effects of aconitine on attenuating neuronal damage induced by amyloid β protein fragment 1-40 (Aβ1-40) via inhibition of glycogen synthase kinase-3β (GSK-3β).Based on cell safety tests,5 nmol/L was set as the appropriate concentration of aconitine used in following experiments.A cell-damage model was established by incubating SH-SY5Y cells with Aβ1-40 (20 μmol/L) for 24 hours.3 experimental groups were set up:the normal control,Aβ1-40-damaged cell model control and aconitine-treated group,while the last group was pre-treated with aconitine (5 nmol/L) for 12 hours.The lactate dehydrogenase (LDH) in cell culture supernatant was measured using ELISA.The apoptosis and necrosis were analyzed by flow cytometry.The cell GSK-3β protein phosphorylation was detected by Western blotting.Compared with the Model,the significantly lower LDH in cell culture supernatant,cell apoptosis or necrosis rate and phosphorylated GSK-3β levels were detected in the aconitine-treated group.These data suggested that aconitine can substantially alleviate the neuronal damage caused by Aβ1-40,and the benefit may be related to the inhibition of GSK-3β hyper-phosphorylation by aconitine.

Key words: aconitine, Alzheimer's disease, β-amyloid protein, glycogen synthase kinase-3β, neuronal damage

中图分类号:  R966 R285