沉默ATF3调解线粒体平衡,并通过调节MAPK信号通路来改善缺血性中风
Haifengqing Li1, Fan Zhang1, Cong Zhang1
1Department of Neurology, The Affiliated Ganzhou Hospital of Nanchang University, Ganzhou, China.
Frontiers in molecular neuroscience
|July 7, 2025
概括
沉默激活转录因子3 (ATF3) 通过改善线粒体平衡来防止缺血性中风. 这项研究证明了ATF3的存在.
科学领域:
- 神经科学是一个神经科学.
- 细胞生物学 细胞生物学
- 生物化学 生化学
背景情况:
- 线粒体平衡对于治疗缺血性中风至关重要.
- 激活转录因子3 (ATF3) 在缺血性中风和线粒体功能中的作用需要阐明.
研究的目的:
- 研究ATF3在缺血性中风和线粒体平衡中的作用.
- 在中风模型中评估ATF3调制的治疗潜力.
主要方法:
- 在HT22细胞和中风大鼠模型中利用氧气-葡萄糖剥夺/再输液 (OGD/R).
- 评估了细胞亡,线粒体功能 (ATP,NAD+),神经损伤和心脏病发作.
- 进行了转录基因组测序,并分析了基因激活蛋白激酶 (MAPK) 途径.
主要成果:
- 沉默ATF3增强了细胞活力,减少了细胞亡,并在中风模型中减轻了神经系统缺陷和脑梗塞.
- 抑制ATF3降低了活性氧物种 (ROS),增加了ATP和NAD+水平,并上调了线粒素 (MFN) 1和MFN2的表达.
- 转录组分析显示了MAPK信号通路的丰富,ATF3沉默降低了p-ERK/ERK信号的调节.
结论:
- 沉默ATF3减轻缺血性中风,并通过MAPK信号通路改善线粒体平衡.
- 向ATF3提供了一种新的治疗策略,用于在缺血性中风中维持线粒体平衡.
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