12,13-diHOME促进炎症性巨细胞,并通过表观遗传修改它们对微生物和过敏原的反应能力
Din L Lin1, Kevin M Magnaye1, Cara E Porsche1
1Division of Gastroenterology Department of Medicine University of California, San Francisco, CA 94143, USA.
Journal of immunology research
|July 8, 2024
概括
婴儿暴露于12,13-二基-9Z-八甲酸 (12,13-diHOME) 改变了巨细胞的功能,增加了过敏的风险. 这种脂质损害了抗微生物反应,并促进了炎症性免疫细胞概况,导致了儿童的和喘.
科学领域:
- 免疫学 免疫学 免疫学
- 微生物组研究的研究.
- 环境健康 环境健康
背景情况:
- 婴儿便12,13-二-9Z-八甲酸 (12,13-diHOME) 的升高与儿童时和喘风险的增加有关.
- 关联12,13-diHOME与疾病发病的确切机制在很大程度上仍未确定.
- 巨细胞在免疫反应中起着至关重要的作用,使它们成为12,13-diHOME诱导的功能障碍的潜在目标.
研究的目的:
- 为了研究12,13-diHOME如何在功能和表观遗传上改变巨细胞.
- 阐明12,13-diHOME对巨细胞介导的抗微生物和抗原反应的影响.
- 探索12.13-diHOME在与过敏敏感相关的免疫细胞相互作用中的作用.
主要方法:
- 在体外暴露巨细胞于12,13-diHOME.
- 评估巨细胞炎症概况 (IL-1β,CD206) 和细胞容量.
- 使用初级免疫细胞共同培养试验与过敏原刺激 (花生).
- 分析巨细胞染色体的可访问性和基因表达 (干扰素刺激的反应元素).
主要成果:
- 12,13-diHOME将巨细胞倾向于炎症性IL-1β高CD206低表型,由过敏原放大.
- 暴露于12,13-diHOME的巨细胞显示细菌细胞化减少.
- 在共同培养中,12,13-diHOME增强了IL-1β,IL-6的产生,B细胞的记忆扩张和IgE水平.
- 12,13-diHOME诱导巨细胞的表观遗传变化,减少干扰素调节的基因表达.
结论:
- 12,13-diHOME重新编程巨细胞功能和B细胞相互作用.
- 12,13-diHOME的表观遗传修饰通过干扰素轴损害了通过干扰素轴的抗微生物反应.
- 这些机制解释了12,13-diHOME如何导致早期免疫功能障碍和过敏敏感性.
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