UQCRC1下调会通过AMPK无活化损害小鼠的认知功能
Jing Zhang1,2, Zuoxi Wu1, Zonghong Long1
1Department of Anesthesiology, The Xinqiao Hospital, Army Medical University, Chongqing, China.
PeerJ
|August 20, 2025
概括
通过破坏线粒体功能和增加氧化应激,降低调节的乌比基诺- 细胞缩酶核心蛋白1 (UQCRC1) 损害了认知能力. 激活AMPK或增强 lysosomal功能可以扭转这些认知缺陷.
科学领域:
- 线粒体生物学
- 神经科学
- 细胞代谢
背景情况:
- 核蛋白1 (UQCRC1) 对线粒体复合体III的功能至关重要.
- UQCRC1下调与认知障碍有关,但机制尚不清楚.
研究的目的:
- 研究UQCRC1降低对认知功能的病理生理影响.
- 阐明涉及线粒体生物能学,氧化应激,AMPK信号和自的潜在分子机制.
主要方法:
- 开发了一种下调UQCRC1表达的小鼠模型.
- 评估认知能力,线粒体ATP水平,活性氧物种 (ROS),AMPK信号传递和自流.
- 使用针对AMPK和 lysosomal功能的药理干预措施.
主要成果:
- 导致认知缺陷,线粒体ATP合成受损,ROS增加.
- 观察到AMPK激活的减少和自流的中断.
- 药理上激活AMPK或溶酶可以改善认知缺陷并恢复线粒体氧化还原平衡.
结论:
- UQCRC1 缺陷会通过线粒体- 解体间的交叉通话中断而损害认知功能.
- AMP激活蛋白激酶 (AMPK) 在通过自和氧化还原平衡维持神经元平衡方面发挥着关键作用.
- 针对AMPK驱动的器官间通信提供了与线粒体功能障碍相关的认知衰退的治疗策略.
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