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Neuroprotective effects of Neprilysin on neuronal apoptosis induced by Amyloid-beta peptide
Author(s): 
Pages: 5-8,14
Year: Issue:  1
Journal: JOURNAL OF SHANDONG UNIVERSITY(HEALTH SCIENCES)

Keyword:  神经元阿尔茨海默病原代培养中性内肽酶;
Abstract: 目的 研究转染NEP基因对神经毒物质Aβ25-35诱导神经元凋亡的保护作用.方法 培养大鼠脑皮层神经元,用Aβ25-35作用神经元制备凋亡模型,NEP基因转染神经元.通过MTT法及流式细胞分析法观察NEP基因过表达对Aβ诱导神经元凋亡的保护作用.通过RT-PCR检测目的基因NEP,APP,以及凋亡相关基因Bcl-2和Bax mRNA的表达,Western-Blot测定APP和Aβ的蛋白表达.结果 MTT和流式细胞分析法观察,发现在Aβ25-35作用下转染NEP组神经元活,性显著增高(P<0.05),凋亡率降低.RT-PCR及Western Blot结果显示,转染NEP组神经元APP基因的表达明显减少,Aβ的生成减少;同时促凋亡基因Bax表达降低,Bcl-2基因表达增高.结论 转染NEP基因能保护Aβ所致的神经元凋亡.
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