肠 (Giardia intestinalis) 将粘膜免疫重塑为一种2型反应,减轻炎症性肠类疾病
Aline Sardinha-Silva1, Pedro H Gazzinelli-Guimaraes2, Oluwaremilekun G Ajakaye1,3
1Molecular Parasitology Section, Laboratory of Parasitic Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
bioRxiv : the preprint server for biology
|June 21, 2024
概括
儿童的病感染促进了2型免疫反应,减少了腹疾病的严重程度. 这种免疫转移通过降低有害细胞因子的调节来保护其他炎症状况.
科学领域:
- 免疫学 免疫学 免疫学
- 传染性疾病 传染性疾病
- 微生物学 微生物学
背景情况:
- 腹性疾病是全球儿童死亡的主要原因之一.
- 矛盾的是,Giardia intestinalis的同时感染可以降低腹疾病的严重程度.
- 巨在无症状的学龄儿童中很普遍.
研究的目的:
- 为了研究Giardia感染在无症状儿童的免疫调节作用.
- 阐明Giardia影响粘膜免疫和防炎的机制.
主要方法:
- 对大便样本进行Giardia流行率分析.
- 评估粘膜免疫反应,包括Th2细胞群,细胞因子 (IL-25) 和杯状细胞增生.
- 在STAT6缺乏的小鼠中对实验性结肠炎模型 (Toxoplasma gondii诱导的结肠炎,DSS-结肠炎) 的保护的评估.
主要成果:
- 吉阿迪亚感染诱导了2型粘膜免疫反应,增加了Th2细胞,IL-25和杯状细胞增生.
- 感染扩大IL-10生产的Th2和GATA3+Treg细胞,促进慢性携带和传播.
- 吉亚迪亚通过降低依赖STAT6信号的Th1/Th17细胞和促炎性细胞因子的调节来保护致死性结肠炎和结肠炎.
结论:
- 吉亚迪亚感染将粘膜免疫重塑为2型反应,从而提供对炎症性疾病的保护.
- 蛋白质体在调节粘膜防御和维持免疫平衡方面发挥着至关重要的作用.
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