患者的iPSC衍生的神经原生细胞显示异常的细胞周期控制,p53和DNA损伤反应蛋白表达在精神分裂症
Aaron Stahl1,2, Johanna Heider3, Richard Wüst4,5
1Institute of Biomedical Engineering, Department for Medical Technologies and Regenerative Medicine, University of Tübingen, Tübingen, 72076, Germany. a.stahl@uni-tuebingen.de.
BMC psychiatry
|November 1, 2024
概括
精神分裂症 (SCZ) 涉及早期大脑发育问题. 我们的研究显示,SCZ神经原生细胞显示出改变的蛋白质模式,特别是涉及p53,影响细胞周期和神经发育.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 发展生物学 发展生物学
背景情况:
- 精神分裂症 (SCZ) 是一种严重的精神疾病,与早期大脑发育异常有关.
- 基因组和转录组研究表明异常细胞表型和神经元发育中的途径放松调节.
- 在蛋白质水平上对机制的理解仍然有限.
研究的目的:
- 为了研究来自患者的神经元原生细胞 (NPC) 中的SCZ特异性蛋白质表达特征.
- 为了比较SCZNPCs的蛋白质概况与健康对照的蛋白质概况.
- 为了确定关键的蛋白质变化和参与SCZ病变的信号通路.
主要方法:
- 利用来自SCZ患者和健康对照的诱导多能干细胞 (iPSC) 衍生的NPC.
- 采用高通量西部涂抹 (DigiWest) 用于向蛋白质组学.
- 分析了蛋白质表达和酸化模式.
主要成果:
- SCZ NPC 显示了改变的 Wnt 和 MAPK 信号传导,蛋白质合成,细胞循环调节和 DNA 损伤反应途径.
- 在SCZ的NPC中,G2/M细胞周期停止和分化能力降低.
- 在SCZ NPC中观察到高的p53表达和酸化,这表明它在神经发育受损中的作用.
结论:
- 向蛋白质组学揭示了SCZ NPC中DNA损伤反应,细胞周期控制和p53表达的连贯机械变化.
- 基于iPSC的模型适用于研究SCZ等精神疾病.
- 这些发现有助于更好地理解早期发育过程中SCZ疾病机制.
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