与阿波利波蛋白M结合的基-1-酸盐通过激活S1P1和S1P4来抑制NETosis
Makoto Kurano1, Baasanjav Uranbileg1, Yutaka Yatomi1
1Department of Clinical Laboratory Medicine, The University of Tokyo, Tokyo, Japan.
Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie
|September 1, 2023
概括
脂蛋白M (ApoM) 通过调节氨酸1-酸盐 (S1P) 信号传递来保护抗败血症诱导的NETosis. 针对ApoM/S1P轴可能为败血症和相关的凝血病提供新的治疗方法.
科学领域:
- 生物化学 生物化学
- 免疫学 免疫学 免疫学
- 病理学 病理学 病理学
背景情况:
- 高密度脂蛋白 (HDL) 具有针对败血症的保护作用,其介导由斯芬戈-1-酸盐 (S1P) 和阿波利波蛋白M (ApoM).
- 败血症可能导致凝血病态,在这个过程中,NETosis (中性细胞外细胞陷形成) 的作用需要进一步阐明.
研究的目的:
- 调查ApoM在败血症引起的凝血病和NETosis中的作用.
- 阐明涉及ApoM/S1P轴和蛋白激酶C (PKC) 信号的潜在机制.
主要方法:
- 利用脂聚糖诱导性败血症小鼠模型与ApoM-knockout和ApoM过度表达的小鼠.
- 评估了NETosis标志物 (血DNA,基因素),生存率,凝血病和器官损伤.
- 研究了ApoM受条件介质和S1P受体调节器 (S1P1,S1P4) 对中性粒细胞和PKC激活的影响.
主要成果:
- 在Apom淘汰赛中,Apom淘汰赛小鼠表现出升高的NETosis标志物,降低存活率,以及在胰岛素给药后增加的凝血病/器官损伤.
- 过度表达ApoM的小鼠表现出减弱的NETosis,凝血病和器官损伤.
- 在ApoM-Knockout小鼠中,ApoM的使用保护了对组织素诱导的NETosis的保护.
- S1P1和S1P4激活减弱了NETosis,可能通过抑制PKCδ和PKCα/β.
结论:
- ApoM/S1P轴在保护与败血症相关的NETosis方面发挥着至关重要的作用.
- 通过S1P1和S1P4调节PKC激活是一个关键的机制.
- 针对ApoM/S1P轴为涉及无控制NETosis的疾病,如败血症,提供了潜在的治疗策略.
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