昼夜检查点将中性粒细胞重新安置,以最大限度地减少受伤
Alejandra Aroca-Crevillén1, Sandra Martín-Salamanca1, Lidiane S Torres2
1Spanish National Centre for Cardiovascular Research Carlos III , Madrid, Spain.
The Journal of experimental medicine
|December 12, 2025
概括
循环节律调节中性粒细胞的活动,减轻由炎症驱动的损伤. 使用CXCL12激活CXCR4通路,通过控制中性粒细胞的行为来保护组织免受损伤.
科学领域:
- 免疫学 免疫学 免疫学
- 时间生物学 时间生物学
- 细胞生物学 细胞生物学
背景情况:
- 炎症驱动的伤害是全球死亡的主要原因.
- 中性粒细胞毒性活动显著导致组织损伤和器官功能障碍.
- 炎症损伤的自然每日波动表明存在保护性昼夜机制.
研究的目的:
- 调查昼夜机制在缓解中性粒细胞介导炎症中的作用.
- 为了确定参与日间防护炎症损伤的分子通路.
- 探索针对中性粒细胞生理时钟的治疗策略,以治疗炎症疾病.
主要方法:
- 分析炎症损伤的日间模式.
- 研究血CXCL12水平及其与保护的相关性.
- 对中性粒细胞昼夜钟和CXCR4信号的基因操纵.
- 用合成激素激活CXCR4的药理活性.
- 在受伤组织中评估中性粒细胞局部化和宿主细胞亡.
主要成果:
- 对炎症损伤的日间保护与血CXCL12水平升高一致.
- 通过CXCR4信号传递,CXCL12抑制了中性粒细胞内在的昼夜时钟.
- 中性粒细胞钟的遗传干扰或CXCR4过活性取消了白天的保护.
- 用CXCR4激动剂治疗保护心肌和血管损伤.
- 保护涉及中性粒细胞在伤口内重新定位,防止旁观者细胞死亡.
结论:
- 通过CXCL12/CXCR4轴调节的中性粒细胞昼夜检查点,可以防止过度炎症.
- 这种昼夜机制可以在治疗上被激活,以保护宿主免受炎症损伤.
- 针对中性粒细胞的昼夜生物学,为管理炎症性疾病提供了一个新的策略.
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