局部糖解支持受伤诱导的轴突再生
Luca Masin1, Steven Bergmans1, Annelies Van Dyck1
1Department of Biology, Animal Physiology and Neurobiology Section, KU Leuven, Leuven Brain Institute, Leuven, Belgium.
The Journal of cell biology
|October 1, 2024
概括
轴突在受伤后使用局部糖解来获得能量,当Pten和Socs3被删除时,支持再生. 这种含糖的ATP,与线粒体运输,对于神经损伤后的轴突再生至关重要.
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
- 代谢途径 代谢途径
背景情况:
- 在受伤后的轴突再生对于功能恢复至关重要.
- 能量代谢对于成功的轴突再生至关重要.
- 支持轴突修复的代谢适应仍然不完全理解.
研究的目的:
- 研究轴突在再生过程中使用的代谢策略.
- 确定糖解和线粒体代谢在视神经受伤后的轴突修复中的作用.
- 阐明Pten和Socs3在调节轴突对损伤的代谢反应中的功能.
主要方法:
- 在视神经被压碎后,视网膜质细胞的转录组分析.
- 使用多隔间微流体装置进行初级视网膜培养.
- 评估基因改造神经元中的轴突再生,线粒体贩运和代谢活动 (糖解,乳酸生产).
主要成果:
- 同时删除Pten和Socs3在受伤后的视网膜质细胞中调节了糖性基因表达.
- 同时删除的Pten和Socs3神经元表现出增强的轴突再生和线粒体运输.
- 在Pten/Socs3缺陷神经元中受损诱导的轴突再生依赖于局部糖解,与依赖于线粒体代谢的野生类型轴突不同.
- 抑制乳酸生产或上游糖解损害了轴突的存活和再生.
结论:
- 局部糖解提供必要的ATP,用于在受伤后启动和延长轴突再生.
- 持续的线粒体运输至关重要,并与糖解协同工作,用于轴突修复.
- 向糖解路径是促进轴突再生的潜在治疗策略.
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