来自晚期阿尔茨海默病患者的神经干细胞显示了根据Apolipoprotein E改变Sirtuin 1的调节,表明干细胞可塑性受到干扰
Matthias Jung1, Juliane-Susanne Jung2, Jenny Pfeifer3
1Institute of Physiological Chemistry (IPC), Faculty of Medicine, Martin Luther University Halle-Wittenberg, Hollystrasse 1, 06114, Halle (Saale), Germany. matthias.jung@uk-halle.de.
Molecular neurobiology
|September 20, 2023
概括
这项研究引入了一种使用患者衍生的神经干细胞 (NSC) 探索阿尔茨海默病 (AD) 风险因素的新模型. 在晚期发病的AD中,APOE4显著影响衰老标志物和NSC可塑性.
科学领域:
- 神经科学是一个神经科学.
- 干细胞生物学 干细胞生物学
- 遗传学 遗传学 是一个
背景情况:
- 晚期阿尔茨海默病 (AD) 是一种多因素的神经退行性疾病.
- 阿波利波蛋白E (APOE) E4等位基因和晚年是晚期发作的AD的主要危险因素.
- 在AD病变发生过程中神经干细胞 (NSC) 的可塑性尚未得到充分理解.
研究的目的:
- 开发一个体外模型,使用患者衍生的诱导多能干细胞 (iPSC) 来产生NSC.
- 研究APOE4在NSC中的衰老标志物,特别是sirtin 1 (SIRT1) 中的作用,与APOE3.3相比.
- 在AD的背景下,研究NSC可塑性的与年龄相关的变化.
主要方法:
- 从晚期发病的AD患者衍生的iPSC和健康对照生成NSC.
- 基因和蛋白质表达的比较,专注于APOE3和APOE4NSC之间的衰老标志物 (例如SIRT1,ATG7,PTEN,FGF2).
- 分析NSC可塑性和APOE表达水平的影响.
主要成果:
- 晚期发病的阿兹海默症患者的NSC显示关键基因 (ATG7,PTEN,FGF2) 的表达发生改变,自减少.
- 与APOE3.3相比,APOE4在NSC中显著抑制了SIRT1的表达.
- 强制表达APOE3并没有恢复改变的基因表达,这表明复杂的调节机制.
结论:
- 这项研究建立了一个有价值的体外模型,用于研究人类NSC在衰老和AD中的变化.
- APOE4影响NSC衰老标志物和可塑性,有助于晚期发病的AD病理.
- 在APOE4NSC中改变基因表达和减少SIRT1表明细胞可塑性下降.
关键词:
在 Apolipoprotein E 异型4 (APOE4) 中.晚期发作的阿尔茨海默氏症 (AD)神经干细胞 (NSC) 的可塑性塞尔图因1 (SIRT1) 是一个端粒长度 端粒长度 端粒长度更多相关视频
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