微血管内皮代谢功能障碍驱动脑通过缺血-再输血后的生物能量失效驱动脑
Yi-Fan Zhou1, Si-Bo Yang1, Feng Zhang1
1Department of Neurology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430022, China.
Theranostics
|January 29, 2026
概括
缺血性中风后乳酸水平升高预示着不良结果和大脑胀. 针对涉及乳酸盐,基因素乳酸和ATF4-DDIT4的代谢-表观遗传反循环可能会改善恢复.
科学领域:
- 神经科学是一个神经科学.
- 生物化学 生物化学
- 分子生物学分子生物学
背景情况:
- 缺血性中风治疗面临着挑战,尽管使用了再道治疗,但功能结果不佳.
- 在再注血过程中持续的生物能量失效导致持续的脑和无回流现象.
研究的目的:
- 为了阐明代谢-表观遗传级联驱动微血管能量崩后缺血-再输血.
- 确定脑 edem 和 no-reflow 背后的机制,将代谢和表观遗传因素联系起来.
主要方法:
- 在急性缺血性中风患者中分析血清乳酸/酸盐 (L/P) 比率.
- 在体内研究使用中脑动脉封闭 (MCAO) 模型与MRI和FITC-dextran测试.
- 单细胞内皮细胞的RNA测序和基因组乳酸化 (H3K18la) 和ATF4-DDIT4信号的分子测试.
主要成果:
- 升高的L/P比与神经学结果不佳和脑相关.
- 抑制糖解和乳酸生产减少了水.
- 鉴定出了一种具有线粒体功能障碍和亡的高糖性内皮细胞子集,与乳酸积累,H3K18la增加和ATF4-DDIT4激活有关.
结论:
- 异常的乳酸代谢是一种预后生物标志物,并通过基因素乳化将代谢不足与表观遗传变化联系起来.
- 一个涉及糖解,H3K18la和ATF4-DDIT4的自我放大循环加剧了生物能衰竭并促进了亡.
- 针对H3K18la/ATF4-DDIT4反循环,为缺血性中风恢复提供了一个治疗策略.
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