不变的自然杀手T细胞调节腹巨对多微生物败血症的反应
Daithi S Heffernan1, Tristen T Chun1, Sean F Monaghan1
1Division of Surgical Research, Department of Surgery, Brown University, Rhode Island Hospital, Providence, Rhode Island.
The Journal of surgical research
|June 2, 2024
概括
不变的自然杀手T (iNKT) 细胞在腹部败血症期间影响巨细胞功能. 这些在小鼠中的发现表明,对于患有败血症的重症手术患者来说,这些可能是潜在的治疗点.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 手术病理学手术病理学
背景情况:
- 败血症涉及免疫失调,影响巨细胞的功能.
- 不变的自然杀手T (iNKT) 细胞是关键的免疫调节者.
- 在腹部败血症期间,iNKT细胞在调节腹巨细胞中的作用尚不清楚.
研究的目的:
- 为了研究iNKT细胞在多微生物败血症期间对腹膜巨细胞的影响.
- 在iNKT细胞缺席的情况下分析巨细胞的表型和功能变化.
主要方法:
- 野生类型 (WT) 和iNKT淘汰 (iNKT-/-) 小鼠的结和穿孔 (CLP) 模型.
- 在CLP24小时后收集了腹巨细胞以进行表型和功能分析.
- 评估了杀菌活性,细胞因子生产 (IL-6,IL-10) 和超氧化物生产.
主要成果:
- 缺少iNKT细胞导致腹巨细胞的增加,并改变了CD86,CD206,Ly6C-int和Ly6C-high的表达.
- iNKT细胞没有影响巨细胞化或杀菌活性.
- iNKT细胞调节了IL-10的产生和酸盐/超氧化物从巨细胞释放.
结论:
- iNKT细胞在多微生物败血症中显著影响腹膜巨细胞的表型和功能.
- 向iNKT细胞活动可能为腹部败血症患者提供治疗潜力.
- 这些发现可能会转化为临床应用,用于重症手术患者.
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