鼻腔微生物以不同的方式在人类鼻腔表皮器官中定居并引起细胞因子
Andrea I Boyd1, Leah A Kafer1, Isabel F Escapa1
1Department of Molecular Virology and Microbiology, Baylor College of Medicine, Houston, Texas, USA.
mSphere
|September 30, 2025
概括
人类鼻上皮质有机体 (HNO) 为研究细菌殖民提供了一个新的模型,显示出对黄金葡萄球菌,肺炎菌株菌株菌株菌株和猪菌株菌株菌株菌株菌株的独特免疫反应.
科学领域:
- 微生物学 微生物学
- 免疫学 免疫学 免疫学
- 皮质生物学 皮质生物学
背景情况:
- 像金黄色葡萄球菌 (Staphylococcus aureus) 和肺炎链球菌 (Streptococcus pneumoniae) 这样的病原生物殖民于鼻腔,增加了感染风险.
- Dolosigranulum物种的殖民与鼻子健康有关.
- 了解鼻腔微生物与上皮的相互作用对于预防感染至关重要.
研究的目的:
- 开发和验证人类鼻上皮质器官 (HNO) 作为一种新型的细菌鼻殖民模型系统.
- 为了研究HNO与关键的鼻腔细菌之间的相互作用:S. aureus,S. pneumoniae和D. pigrum.
- 描述宿主免疫反应对鼻上表皮中的细菌殖民的特征.
主要方法:
- 在空气-液体接口 (ALI) 区分HNO以模仿人类鼻上皮.
- 这些HNO被S. aureus,S. pneumoniae或D. pigrum单独殖民了长达48小时.
- 分析了细菌局部化,细胞毒性和上皮细胞因子反应 (例如IL-1家族,CXCL10,CXCL11).
主要成果:
- HNOs成功地模拟了可再生的细菌鼻腔殖民,并采用了特定物种的动力学.
- 细菌局部化到粘液层,具有最小的细胞毒性,表明耐受性.
- 观察到不同的细胞因子概况,其中S. aureus诱导IL-1家族细胞因子和对S. pneumoniae和D. pigrum不同的化学因子反应.
结论:
- 鼻腔粘膜微生物代表了一个有价值的新模型系统,用于研究人类鼻腔粘膜微生物的表皮动力学.
- 这种模型允许在生理学上相关的背景下调查宿主-病原体相互作用和免疫反应.
- HNO可以区分殖民和感染反应,提供有关天生的免疫力的见解.
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