PU.1恢复由C9ORF72重复扩张引起的微质功能障碍神经器官中的神经器官
Tijana Ljubikj1, Mayte Z Mars1, Astrid T van der Geest1
1Department of Translational Neuroscience, University Medical Center Utrecht Brain Center, Utrecht University, 3584 CG, Utrecht, The Netherlands.
Brain : a journal of neurology
|September 18, 2025
概括
由于C9ORF72的重复扩张,肌缩性侧面硬化症 (ALS) 和前性痴呆症 (FTD) 的微质功能受损. 恢复转录因子PU.1可以拯救这些微质缺陷,为C9-ALS/FTD提供潜在的治疗点.
科学领域:
- 神经科学是一个神经科学.
- 免疫学 免疫学 免疫学
- 遗传学 遗传学 是一个
背景情况:
- 肌缩侧面硬化症 (ALS) 和前性痴呆症 (FTD) 是神经退行性疾病,其机制尚不清楚.
- C9ORF72六核酸重复扩张 (C9-ALS/FTD) 是最常见的遗传原因.
- 微质细胞,大脑的免疫细胞在C9-ALS/FTD中的作用尚不清楚,关于它们的活动有相互矛盾的报道.
研究的目的:
- 在C9-ALS/FTD的复杂的三维模型中研究微质功能.
- 确定C9-ALS/FTD中微质功能障碍背后的分子机制.
主要方法:
- 从C9-ALS/FTD患者和对照的诱导多能干细胞 (iPSC) 开发出大脑器官.
- 分析了来自有机基的微质细胞 (oMG) 的转录变化和细胞复杂性.
- 进行实时成像,以评估微质细胞和神经元组件的吞.
- 利用病毒过度表达来操纵转录因子活性 (PU.1).
主要成果:
- C9-ALS/FTD有机原微质 (C9-oMGs) 显示细胞复杂性降低,免疫和吞细胞通路中的基因表达发生改变.
- 从C9-ALS/FTD有机体中释放的炎症暗示物减少,C9-oMGs中的LAMP1表达减少.
- C9-oMGs显示了突触蛋白质的细胞化受损.
- 转录组学在C9-oMGs中发现了下调的PU.1 regulon,PU.1的再表达挽救了功能缺陷.
结论:
- 微质功能在与C9-ALS/FTD相关的复杂细胞环境中减少.
- 降低PU.1的调节有助于C9-ALS/FTD中微质功能障碍.
- 在C9-ALS/FTD中,PU.1是恢复微质功能的潜在治疗标.
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