线粒体代谢在成熟的中性粒细胞中迅速重新激活,以支持刺激诱导的反应
Jorgo Lika1,2, James A Votava1, Rupsa Datta1
1Morgridge Institute for Research, Madison, WI, United States.
Frontiers in immunology
|May 13, 2025
概括
中性粒细胞的线粒体代谢在分化和激活过程中发生显著变化. 抑制线粒体的酸盐载体会影响中性粒细胞的功能,并为炎症性疾病提供治疗潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 代谢研究研究 代谢研究
背景情况:
- 中性粒细胞是关键的先天性免疫细胞,对宿主防御至关重要.
- 它们的效应器功能至关重要,但它们的线粒体代谢尚未完全理解.
研究的目的:
- 在分化和激活过程中对中性粒细胞线粒体代谢进行定量分析.
- 为了确定线粒体代谢对中性粒细胞功能的影响.
主要方法:
- 利用小鼠和人类细胞模型进行中性粒细胞分化和激活.
- 采用同位素追踪,细胞外流量分析,代谢学和光寿命成像显微镜.
- 研究了线粒体皮鲁酸盐载体抑制剂的作用.
主要成果:
- 中性粒细胞的线粒体代谢随着成熟而下降,将能量生产从氧化酸化转移.
- 活性中性粒细胞可以迅速重新激活TCA循环.
- 线粒体酸盐载体抑制剂减少了中性粒体细胞外陷的释放,并影响了氧化还原状态,迁移和亡.
结论:
- 线粒体新陈代谢在中性粒细胞中被动态重塑,并发挥着重要的功能作用.
- 线粒体酸盐载体抑制剂对由中性粒细胞功能障碍驱动的炎症状况具有治疗潜力.
相关概念视频
01:37Mitochondria
9.2K
Mitochondria are eukaryotic cellular organelles that are known to produce energy through a process called oxidative phosphorylation. Besides their primary function, mitochondria are involved in various cellular processes, including cell growth, differentiation, signaling, metabolism, and senescence. Age-related changes cause a decline in mitochondrial quality and integrity due to increased mitochondrial mutations and oxidative damage. Thus, aging can severely impact mitochondrial functions,...
9.2K
01:46Electron Transport Chain: Complex I and II
9.9K
The mitochondrial electron transport chain (ETC) is the main energy generation system in the eukaryotic cells. However, mitochondria also produce cytotoxic reactive oxygen species (ROS) due to the large electron flow during oxidative phosphorylation. While Complex I is one of the primary sources of superoxide radicals, ROS production by Complex II is uncommon and may only be observed in cancer cells with mutated complexes.
ROS generation is regulated and maintained at moderate levels necessary...
ROS generation is regulated and maintained at moderate levels necessary...
9.9K