一个按需的协作天生的自适应性免疫反应对感染治疗的反应
Liang Chen1,2,3,4, Zhenxuan Shao1,2,3,4, Zengjie Zhang1,2,3,4
1Department of Orthopedic Surgery, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou City, Zhejiang Province, 310000, P. R. China.
Advanced materials (Deerfield Beach, Fla.)
|July 31, 2023
概括
这项研究引入了一种新的纳米粒子系统,该系统可以重编程巨细胞以增强对深层组织感染的免疫反应,有效清除细菌并防止复发.
科学领域:
- 生物医学工程 生物医学工程
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
背景情况:
- 深层组织感染带来了重大的临床挑战,原因是宿主免疫力受损和病原体耐药性.
- 细胞内病原体可以逃避治疗并创造免疫抑制环境,导致治疗失败和复发.
研究的目的:
- 开发一种基于纳米粒子的新策略来调节自身免疫力,用于治疗深层组织感染.
- 在感染部位诱导协作性先天性和适应性免疫反应.
主要方法:
- 使用生物模拟纳米颗粒涂上巨细胞膜,以有针对性地传递到感染部位.
- 通过依赖曼诺受体的途径在巨细胞中研究纳米颗粒的积累.
- 评估了纳米粒子武装巨细胞对细菌根除和免疫反应的影响.
主要成果:
- 巨细胞覆盖的纳米粒子在感染部位有效地积累,并被巨细胞内化.
- 重新编程的巨体显示出增强的先天免疫力,包括增加反应性氧物种 (ROS) 生成,促炎性细胞因子分泌和M1极化.
- 这些激活的巨细胞有效地消灭了细胞内细菌,并促进了T细胞的激活,从而产生了强大的适应性免疫力和预防感染复发.
结论:
- 开发的纳米粒子系统有效地增强了对深层组织感染的巨细胞介导的先天性和适应性免疫力.
- 这种基于巨细胞的策略为治疗耐火细菌感染和预防复发提供了一个有希望的新方法.
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