中性粒细胞中的脂肪酸代谢在结核病期间促进肺损伤和细菌复制
Poornima Sankar1, Ramon Bossardi Ramos2, Jamie Corro3
1Department of Immunology and Microbial Disease, Albany Medical College, Albany, New York, United States of America.
PLoS pathogens
|October 4, 2024
概括
在中性粒细胞中阻断脂肪酸氧化 (FAO) 通过降低细菌负载和炎症来预防结核病 (TB). 抑制FAO特别针对不成熟的中性粒细胞,为结核病治疗提供了一种新的策略.
科学领域:
- 免疫学 免疫学 免疫学
- 代谢过程中的代谢.
- 传染性疾病 传染性疾病
背景情况:
- 结核病 (TB) 的严重程度与中性粒细胞进入肺部的流入有关.
- 中性粒细胞的代谢状态影响炎症反应和病原体相互作用.
- 中性粒细胞代谢在结核病原发生中的作用尚不清楚.
研究的目的:
- 调查糖解和脂肪酸代谢在Mycobacterium结核病 (Mtb) 感染期间对中性粒细胞的影响.
- 确定调节结核病中性粒细胞代谢的治疗潜力.
主要方法:
- 使用ex-vivo测定和小鼠感染模型来研究中性粒细胞对Mtb HN878.8的反应.
- 糖解和脂肪酸氧化 (FAO) 在药理和遗传上被抑制.
- 分析了中性粒细胞种群,迁移和抗菌功能.
主要成果:
- 抑制糖解会使结核病理变得更糟.
- 抑制FAO可以减少体重减轻,免疫病理和细菌负担.
- 粮农组织的抑制有选择性地影响了不成熟的,病原体宽容性中性粒细胞 (Ly6Glo/dim) 的招募.
- 向卡尼丁棕甲基转移酶1a (Cpt1a) 损害了中性粒细胞迁移和增强了抗菌活性.
结论:
- 中性粒细胞的免疫代谢极大地影响着结核病的发生.
- 调节中性粒细胞中的脂肪酸代谢为结核病提供了一种新的宿主导的治疗策略.
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