菌根菌利用宿主GPR84抑制促炎反应并促进巨细胞的感染
Reziya Wumaier1, Ke Zhang2, Jing Zhou3
1Key Laboratory of Medical Molecular Virology (MOE/NHC/CAMS), School of Basic Medical Sciences, Shanghai Medical College, Shanghai Public Health Clinical Center, Fudan University, Shanghai 200433, China.
Microorganisms
|January 25, 2025
概括
G蛋白结合受体84 (GPR84) 在结核感染期间被诱导,通过抑制炎症和增加脂质滴,促进细菌的生存. 准GPR84可能为结核病提供一种新的宿主导疗法.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物学 微生物学
- 细胞生物学 细胞生物学
背景情况:
- 结核病 (TB) 是导致死亡的主要原因,由Mycobacterium tuberculosis (Mtb) 引起.
- Mtb逃避宿主免疫力,需要了解宿主-病原体相互作用.
- G蛋白结合受体84 (GPR84) 调节炎症和免疫细胞迁移,但其在结核病中的作用尚不清楚.
研究的目的:
- 为了研究GPR84在真菌细菌感染中的作用.
- 确定GPR84是否是针对宿主导的抗结核病策略的潜在治疗标.
主要方法:
- 在结核病患者的全血和感染Mycobacterium marinum (Mm) 的巨模型中分析GPR84表达.
- 使用Mmm-wasabi小鼠尾部感染模型来评估组织损伤.
- 在体外研究了GPR84对促炎性细胞因子和脂质滴滴积累的影响.
主要成果:
- 在结核病患者和Mm感染的巨细胞中,GPR84的表达被上调.
- 在小鼠模型中,GPR84影响了组织损伤的程度.
- 在体外,GPR84抑制了促炎性细胞因子表达和增加了脂质滴积累,提高了细胞内Mm生存率.
结论:
- GPR84在宿主对真菌细菌感染的反应中发挥着重要作用.
- 通过调节炎症反应和脂质代谢,GPR84促进了细胞内细菌的生存.
- 对于宿主导的抗结核治疗,GPR84是潜在的治疗点.
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