衍生于皮肤虫 (Dermatophagoides farinae) 的外体诱导过敏气道炎症
Ting Yang1, Zuyu Xu2, Jinyan Yu2
1Department of Dermatology, Affiliated Children's Hospital of Jiangnan University, Wuxi, Jiangsu, People's Republic of China.
Microbiology spectrum
|June 14, 2023
概括
来自Dermatophagoides farinae的室内灰尘虫 (HDM) 外体是免疫原体,可以引发过敏呼吸道炎症. 这些外体激活免疫细胞并释放炎症性细胞因子,为HDM过敏机制提供了新的见解.
科学领域:
- 免疫学 免疫学 免疫学
- 过敏学 过敏学
- 分子生物学分子生物学
背景情况:
- 室内灰尘 (HDM) 是重要的室内过敏原,引起气道过敏性疾病.
- 皮肤虫 (Dermatophagoides farinae) 是中国主要的HDM物种,与过敏性疾病有关.
- 在过敏呼吸道炎症中,D. farinae衍生的外体的作用以前尚不清楚.
研究的目的:
- 调查D. farinae衍生的外体在过敏呼吸道炎症中的致病作用.
- 为了描述D. farinae外体的蛋白质和微RNA含量.
- 阐明D. farinae外体诱导炎症的机制.
主要方法:
- 用超离心法从D. farinae中分离出外体.
- 使用枪支液体染色学-并联质谱学和小RNA测序的蛋白质和微RNA分析.
- 通过免疫涂抹,西部涂抹和ELISA评估免疫性.
- 在小鼠模型中诱导过敏呼吸道炎症.
- 使用转录学分析,对与支气管上皮细胞 (16-HBE) 和膜巨细胞 (NR8383) 的外体组相互作用的分析.
主要成果:
- D. farinae外体表现出与D. farinae特定的IgE抗体具有特定的免疫活性.
- 在小鼠中,给予D. farinae外体诱导过敏气道炎症.
- 外体细胞侵入支气管上皮细胞和膜巨细胞,触发发炎性细胞因子 (IL-33,TSLP,TNF-α,IL-6) 的释放.
- 转录组分析显示,免疫通路和细胞因子/化学因子参与了外体因子诱导的敏感化.
结论:
- 来自D. farinae的外体是免疫的,可以诱导过敏的呼吸道炎症.
- 这些外体通过支气管上皮细胞和膜巨细胞调解炎症.
- 这些发现为HDM诱导的过敏气道炎症和潜在的治疗点的病原发生提供了关键的见解.
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