天生的免疫训练启动了细胞增生,以保护免受肺损伤
Yoon-Young Kang1,2, Dong-Young Kim1, Sang-Yong Lee1,2
1Department of Biomedical Sciences, University of Ulsan College of Medicine, ASAN Medical Center, Seoul, 05505, Republic of Korea.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|January 27, 2024
概括
用β-葡萄糖进行系统性先天免疫训练,通过增强髓状细胞功能和表观遗传变化,保护肺部免受伤害. 这种方法可以减少肺损伤和纤维化,这表明治疗外周器官疾病的潜力.
科学领域:
- 免疫学 免疫学 免疫学
- 细胞生物学 细胞生物学
- 肺部病理学 肺部病理学
背景情况:
- 天生的免疫训练重新编程髓状细胞,以增强对次要挑战的反应.
- 系统性天生的免疫训练对局部组织损伤的保护能力在很大程度上仍未被探索.
研究的目的:
- 调查系统性先天免疫训练是否可以防止局部组织损伤,特别是白血素诱导的肺损伤和纤维化.
- 阐明通过肺中的先天免疫训练调解的潜在保护机制.
主要方法:
- 鼠被预先用β-葡萄糖进行治疗,β-葡萄糖是一种训练有素的免疫激动剂.
- 肺部损伤是使用白血素诱导的.
- 评估了中性粒细胞的积累,细胞分裂,组蛋白修饰,媒介体的产生 (RvD1) 和上皮细胞的亡.
- 分析了肺上皮细胞中的Sirtuin 1 (SIRT1) 表达.
- 评估了中性粒细胞枯竭对这些参数的影响.
主要成果:
- 在白素诱导的肺损伤的小鼠中,β-葡萄糖预治疗显著降低了死亡率和肺原沉积.
- 这种保护与中性粒细胞积累的增加,增强的细胞增生和膜巨细胞和肺上皮细胞中的基因组修饰有关.
- β-葡萄糖训练增加了RvD1和可溶性介质的产生,导致上皮细胞SIRT1表达升高,这与亡减少和肺损伤减弱相关.
- 中性粒细胞的消耗取消了β-葡萄糖的保护作用.
结论:
- 系统性先天免疫训练可以防止肺损伤和纤维化.
- 保护机制包括中性粒细胞的招募,增强的细胞增生,表观遗传重编程和RvD1-介导的SIRT1诱导在上皮细胞中.
- 中性粒细胞在调解肺部训练免疫的保护作用方面发挥着至关重要的作用.
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