死亡盒酶17通过调节BACE1的翻译促进了氨基原生成
Yue Liu1, Guifeng Zhou1, Li Song1
1Department of Neurology, The First Affiliated Hospital of Chongqing Medical University, Chongqing Key Laboratory of Neurology, 1 Youyi Road, Chongqing 400016, China.
Brain sciences
|May 27, 2023
概括
死亡盒酶17 (DDX17) 在阿尔茨海默病 (AD) 中增加,并通过通过其5'未翻译区域增强β-粉样转化酶1 (BACE1) 翻译来促进粉样生成.
科学领域:
- 神经科学是一个神经科学.
- 分子生物学分子生物学
- 生物化学 生化学
背景情况:
- 阿尔茨海默氏症 (AD) 的特征是粉代,毒性β-粉样 (Aβ) 的积累.
- 亚β的产生主要是由β-粉样蛋白转化酶1 (BACE1) 酶驱动的.
- 已知死盒螺旋酶17 (DDX17) 调节RNA代谢和疾病的发展.
研究的目的:
- 为了研究DDX17在阿尔茨海默氏病中的粉样质生成过程中的潜在作用.
- 阐明DDX17影响Aβ产生的分子机制.
主要方法:
- 在细胞模型 (HEK-APP,Y5Y-APP) 和AD动物模型 (APP/PS1小鼠) 中评估了DDX17蛋白水平.
- 利用DDX17的淘汰和过度表达来研究其对BACE1和Aβ水平的影响.
- 使用翻译抑制剂,并使用光酶试验分析了DDX17与BACE1mRNA的5'未翻译区域 (5'UTR) 的相互作用.
主要成果:
- 在AD模型中,DDX17蛋白水平升高.
- DDX17 knockdown降低了BACE1和Aβ水平,而过度表达则产生了相反的效果.
- DDX17特别与BACE1mRNA的5'UTR结合,增强其翻译和随后的Aβ产生.
结论:
- 增加DDX17表达与阿尔茨海默氏病中的氨基代有关.
- DDX17通过其5'UTR促进BACE1的翻译,有助于AD的进展.
- DDX17代表了阿尔茨海默病的潜在治疗点.
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