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激活会导致营养利用的转变,这会对人类中性粒细胞的细胞功能产生差异性影响
Emily C Britt1,2, Xin Qing1,2, James A Votava1
1Morgridge Institute for Research, Madison, WI, USA.
bioRxiv : the preprint server for biology
|October 9, 2023
概括
中性粒细胞主要使用静止时的糖原作为能量. 激活后,它们转换为葡萄糖,影响氧化爆发和真菌控制等功能.
科学领域:
- 免疫代谢过程中的免疫代谢.
- 细胞的新陈代谢
背景情况:
- 中性粒细胞,关键的先天性免疫细胞,需要大量的代谢资源来实现效应器功能.
- 了解中性粒细胞的营养利用对于理解免疫反应至关重要.
研究的目的:
- 在休息和激活状态下定量表征中性粒细胞的营养利用.
- 阐明代谢变化如何影响特定的中性粒细胞功能.
主要方法:
- 在人类外周血液中性粒细胞中利用了ex vivo和in vivo同位素追踪.
- 通过各种刺激激活后研究的代谢变化.
主要成果:
- 休息中性粒细胞主要依赖于糖原进行糖解和酸途径.
- 活性中性粒细胞显著增加葡萄糖的吸收 (通过GLUT1) 并将其作为主要来源.
- 氧化突发需要细胞外葡萄糖,而中性粒细胞陷可以使用葡萄糖或糖原.
- 中性粒细胞迁移和真菌控制通过减少对糖原的依赖来增强.
结论:
- 中性粒细胞的新陈代谢重塑是动态的,并且依赖于刺激.
- 转移营养偏好,特别是远离糖原,可以增强中性粒细胞迁移和真菌控制.
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