重新修复的单细胞具有免疫调节作用,并在败血症中调节炎症环境
Kshama Jain1, K Varsha Mohan1, Gargi Roy1
1National Institute of Immunology, Aruna Asaf Ali Marg, New Delhi, 110067, India.
Scientific reports
|September 11, 2023
概括
康复单细胞 (RM) 在治疗败血症方面表现有前途,通过减少炎症和改善小鼠的生存率. 这种来自外围血液单核细胞 (PBMC) 的新型细胞疗法,为败血症管理提供了潜在的新途径.
科学领域:
- 免疫学 免疫学 免疫学
- 再生医学是一种再生医学.
- 细胞疗法细胞疗法
背景情况:
- 败血症涉及失调的免疫反应和高炎症,导致严重的疾病.
- 介质细胞干细胞 (MSCs) 具有免疫调节特性,已被评估用于败血症治疗.
- 从PBMCs获得的重修单细胞 (RM),表现出巨细胞和MSC类特征.
研究的目的:
- 在临床前败血症模型中评估再生单细胞 (RM) 的治疗潜力.
- 在体外评估RM的免疫调节作用,使用来自败血症患者的外周血液单核细胞 (PBMC).
主要方法:
- RM是由健康的人类PBMCs生成的,并在小鼠败血症模型中在不同阶段给予.
- 对血清细胞因子水平 (IL-6,MCP-1,IL-10) 和生存率进行了监测.
- 试验室研究包括从败血症患者中与PBMC共同培养RM,以分析炎症标志物和反应性氧物种 (ROS) 生产.
主要成果:
- 当与抗生素相结合时,在小鼠中使用RM降低了血清IL-6,MCP-1和IL-10水平,改善了低温症,并将生存率从0%提高到66%.
- 在体外,RM与败血症患者的PBMC共同培养减少了ROS的产生,并降低了IL-6,IL-8和IL-10的调节,同时提高了TGF-β的调节.
- 人类白细胞抗原DR表达在RM上的减少促进了与患者PBMCs的共同培养.
结论:
- 康复单细胞 (RM) 显示出显著的免疫调节效应,并在败血症小鼠模型中提高存活率.
- 磁共振疗法有可能调节败血症患者的炎症反应.
- RM代表了一种有前途的基于细胞的治疗策略,用于治疗败血症.
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