神经药理学报 ›› 2021, Vol. 11 ›› Issue (2): 1-4.DOI: 10.3969/j.issn.2095-1396.2021.02.001

• 研究论文 •    下一篇

α- 突触核蛋白对内质网应激及细胞凋亡影响

沈原,黄树其,张凯   

  1. 同济大学附属天佑医院神经内一科,上海,200331,中国

  • 出版日期:2021-04-26 发布日期:2021-04-28
  • 通讯作者: 黄树其,E-mail:Doc-haung@126.com
  • 作者简介:沈原,E-mail:sycc0604@163.com
  • 基金资助:

    上海市卫生健康委员会资助项目(NO.2020LP024

Effects of α-Synuclein on Endoplasmic Reticulum Stress and Apoptosis

SHEN YuanHUANG Shu-qiZHANG Kai   

  1. The Department of NeurologyShanghai Tianyou HospitalShanghai200331China

  • Online:2021-04-26 Published:2021-04-28
  • Contact: 黄树其,E-mail:Doc-haung@126.com
  • About author:沈原,E-mail:sycc0604@163.com
  • Supported by:

    上海市卫生健康委员会资助项目(NO.2020LP024

摘要:

目的:构建α- 突触核蛋白(α-synucleinSNCA)和SNCA 突变基因(SNCAmu)过表达转染293T 细胞,观察内质网应激及细胞凋亡。方法:应用PCR 技术扩增目的基因并插入慢病毒载体质粒,重组质粒的构建及包293T 细胞,转染24 h 后用荧光显微镜观察绿色荧光蛋白(green fluorescent proteinGFP)的表达。MTT 检测未转染的293T 细胞组(CON 组)、转染空质粒的293T 细胞组(NC 组)、转染SNCA 基因质粒的293T 细胞组(OE 组)和转染SNCAmu 基因质粒的293T 细胞组(OEm 组),观察各组细胞病毒转染后不同时间(12345 d)细胞增殖的情况。Western blotting 法测定SNCA SNCAmu 诱导caspase-12 的蛋白表达。结果:成功构建pGC-FU-SNCA-GFP pGC-FU-SNCAmu-GFP 质粒及转染293T 细胞,CON 组、NC 组、OE 组和OEm 组不同时间的细胞增殖具有统计学意义,SNCA SNCAmu 可能诱导293T 细胞caspase-12 的蛋白表达。结论:SNCA诱导caspase-12 的内质网应激凋亡途径,可能是帕金森病致病机制之一。

关键词:

font-family:Helvetica, "> αfont-family:Times, ">- 突触核蛋白;帕金森病;慢病毒转染;内质网应激

Abstract:

ObjectiveConstruction and identification of human SNCA and SNCAmu gene lentiviral vectortransfection into the 293T cellsand induce the endoplasmic reticulum stress. MethodsThe target gene was amplified by PCR and inserted into lentiviral vector. The recombinant plasmid was constructed and packaged in 293T cells. The expression of GFP was observed by fluorescence microscope 24 hours after transfection. MTT method was used to detect the proliferation of cells in CON groupNC groupOE group and OEm group at different time points12345 days. Western blotting measured the expression of caspase-12 induced by SNCA and SNCAmu. ResultsPgc-FU-SNCA-GFP and pGC-FU-SNCAmu-GFP were successfully constructed and transfected into 293T cells. At different time points( 12345),the proliferation of cells in CON groupNC group,OE group and OEm group has significance in statistics. SNCA and SNCAmu induced the expression of caspase-12 in 293T cells. ConclusionSNCA induces caspase-12 of endoplasmic reticulum stress apoptosis pathwaywhich may be one of the pathogenic mechanisms of Parkinson’s disease.

Key words:

font-family:Times, "> SNCAfont-family:Helvetica, ">;Parkinson’s diseasefont-family:Helvetica, ">;lentiviral transfectionfont-family:Helvetica, ">;endoplasmic reticulum stress

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