阿齐思罗米改变了小鼠骨髓衍生的巨细胞的殖民地刺激因子-1R (CSF-1R) 表达和功能输出:一篇新的报告
Shivani Yadav1, Parmeswar Dalai1, Sharath Gowda1
1Department of Biological Sciences and Biotechnology, Indian Institute of Advanced Research, Gandhinagar, India.
International immunopharmacology
|July 27, 2023
概括
亚胺素 (AZM) 治疗通过增加CSF-1R表达,将巨细胞生成转移到一种抗炎M2类表型. 这改变了免疫细胞功能,独立于抗菌作用,影响感染期间的T细胞反应.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 药理学 药理学是指药理学的学科.
背景情况:
- 抗生素的副作用需要机械的理解.
- 阿齐思罗米 (Azithromycin,简称AZM) 是一种广泛使用的抗生素.
- 巨细胞 (Mφ) 功能在对抗细菌感染的宿主防御中至关重要.
研究的目的:
- 研究AZM对巨细胞生成和功能的影响.
- 在小鼠模型中确定AZM对细菌清除的影响.
- 阐明AZM诱导免疫调节的机制基础.
主要方法:
- 在体外生成骨髓衍生巨细胞 (BMDM) 通过AZM治疗.
- 分析巨细胞的表型 (M1与M2标志物) 和功能 (细胞分裂,细胞因子释放,炎症酶激活).
- 在体内研究使用鼠标模型感染S. flexneri,包括T细胞反应分析和CSF-1R阻塞实验.
主要成果:
- 治疗AZM促进了M2歪曲的BMDM生成,增加了M2标志物 (CD206,egr2,arg1) 和减少了M1标志物 (CD68,iNOS).
- 接受AZM治疗的巨体表现出减少的促炎性细胞因子 (TNF-α,IL-12,IL-1β) 和炎症酶激活,同时增加了抗炎性IL-10.
- AZM改变了T细胞的反应,减少了T细胞的增殖和促炎性T细胞标记物,这种效应被CSF-1R阻断逆转,表明免疫调节独立于抗菌活性.
结论:
- 阿齐思罗米通过增加CSF-1R表达,使巨细胞生成倾向于一种抗炎M2类表型.
- 在细胞内感染期间,AZM诱导的巨细胞功能改变会影响T细胞反应.
- 需要进一步研究感染期间AZM诱导的巨细胞调节.
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