皮肤脂质与微生物的相互作用与成人无性皮肤炎的屏障控制有关
Madhumita Bhattacharyya1,2, Felix Lauffer3,4, Manja Jargosch4,5
1Environmental Medicine - Institute of Environmental Medicine and Integrative Health, Faculty of Medicine, University of Augsburg and University Hospital of Augsburg, Augsburg, Germany.
Allergy
|August 28, 2025
概括
在阿托皮性皮肤炎 (AD) 中,Staphylococcus hominis通过改变脂质概况和表皮炎症来影响皮肤屏障功能. 这种微生物是了解AD皮肤中的脂质微生物相互作用的关键.
科学领域:
- 微生物学
- 皮肤病学
- 生物化学
背景情况:
- 皮肤表面脂质和开始性微生物对表皮屏障功能至关重要.
- 皮肤脂质和微生物之间的复杂相互作用尚不清楚,特别是在皮肤疾病如亚托皮炎 (AD) 中.
研究的目的:
- 调查皮肤脂质和微生物群落在阿托皮性皮肤炎 (AD) 的关系.
- 确定与AD相关的特定微生物物种和脂质变化.
- 阐明已识别的微生物在阿尔茨海默病变中的作用.
主要方法:
- 在健康和阿尔茨海默氏病患者的皮肤带上进行了高分辨率的枪脂组测量和16S片测序.
- 脂质组数据与微生物测序数据相结合,建立了脂质-微生物相互作用网络.
- 使用重建的人类表皮 (RHE) 的体外共同培养模型用于研究特定微生物及其产品的影响.
主要成果:
- 与健康皮肤相比,无形性皮肤炎 (AD) 的皮肤表现出明显的脂质-微生物相关性,而损伤皮肤的相互作用多样性则减少.
- 人类葡萄球菌 (S. hominis) 与某些脂质具有特定的相关性,包括与非基脱素 (NdS) 18: 0 / 2 / 24: 0 的负相关性和与二甲醇 (DAG) 的正相关性.
- 实验室研究表明,S. hominis与AD皮肤中的T细胞叠加剂结合,降低了RHE厚度,诱导了海绵病,并降低了NdS 18: 0/ 24: 0水平. S. hominis还直接降低了病变性AD皮肤中的NdS水平,并逆转了RHE中的关键炎症和代谢基因表达.
结论:
- 人类葡萄球菌 (S. hominis) 在亚托皮性皮肤炎 (AD) 中显著调节脂质-微生物相互作用.
- 在阿尔茨海默病中,S. hominis 影响表皮屏障功能,炎症和分化过程.
- 这些发现为阿尔茨海默病的复杂发病提供了新的见解,并建议与微生物调节相关的潜在治疗点.
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