在TNF诱导的SIRS中对代谢重编程中,马酸酸盐穿的关键作用
Louise Nuyttens1,2, Marah Heyerick1,2, Maxime Roes1,2
1Center for Inflammation Research, Vlaams Instituut Voor Biotechnologie (VIB), Ghent, Belgium.
Frontiers in immunology
|October 24, 2025
概括
瘤亡因子 (TNF) 损害了酸盐-酸盐穿 (MAS),导致代谢失败和系统性炎症反应综合征 (SIRS) 的死亡. 针对MAS功能障碍为SIRS提供了一个潜在的治疗策略.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 病理生理学 病理生理学
背景情况:
- 瘤亡因子 (TNF) 诱导致命的全身炎症反应综合征 (SIRS),并导致严重的代谢障碍.
- 酸盐-酸盐 (MAS) 穿对于线粒体内的氧化还原平衡和NAD+再生至关重要.
研究的目的:
- 调查MAS功能障碍在TNF诱导的SIRS中的作用.
- 为了确定连接TNF,MAS和代谢失败的分子机制.
- 评估MAS作为SIRS中的治疗点.
主要方法:
- 肝脏RNA测序以分析TNF诱导的SIRS中的基因表达变化.
- 使用Slc25a13-/-小鼠 (缺乏MAS成分氨酸) 来建模MAS功能障碍.
- 评估代谢参数,包括脂肪酸氧化,脂质积累,糖解和乳酸生产.
主要成果:
- TNF降低了MAS基因的调节,可能是通过HNF4α功能的丧失,损害了NAD+再生.
- 在小鼠中,MAS功能障碍加剧了TNF诱导的代谢失调和致死性.
- 缺陷的NAD+再生减少了线粒体β氧化,增加了自由脂肪酸,并导致肝脏脂质积累.
- 马斯功能障碍促进葡萄糖分解,减少葡萄糖生成,导致高乳糖血症和血管泄漏.
结论:
- MAS功能障碍是TNF诱导的SIRS中代谢失败和致死性的关键因素.
- 准MAS为治疗SIRS提供了一个有希望的治疗途径.
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