基于重建的人类表皮的模型,Th2细胞因子对胺亚类的作用
Joudi Bakar1, Rime Michael-Jubeli1, Michel Salmon2
1Lipides: systèmes analytiques et biologiques, Université Paris-Saclay, 91400 Orsay, France.
European journal of dermatology : EJD
|August 28, 2024
概括
亚托邦性皮肤炎 (AD) 涉及皮肤屏障的变化. 一个模仿AD的体外模型显示了改变的陶胺配置文件,特别是非基氨酸 (NS) 和基氨酸 (EOS) 分类的变化,与体内发现保持一致.
科学领域:
- 皮肤病学和皮肤生物学
- 生物化学 生化学
- 在体外建模模型.
背景情况:
- 亚托皮炎 (AD) 的特点是慢性皮肤炎症和障碍功能受损.
- 与健康个体相比,AD患者的角质层脂质组成发生了显著的变化.
- 重建的人类表皮 (RHE) 模型提供了一个体外平台来研究AD的发病因子.
研究的目的:
- 为了在模仿AD的RHE模型中比较脂质谱的修改.
- 具体分析胺子类的变化,非氧氨酸 (NS) 和化 ω-氧氨酸 (EOS).
- 为了验证RHE模型在体内复制AD脂质变化的能力.
主要方法:
- 开发和利用用Th2细胞因子治疗的RHE模型来模拟AD条件.
- 从对照和处理的RHE模型中提取脂质.
- 高性能液体色谱与高分辨率质谱学 (HPLC-HRMS) 结合,用于脂质分析.
主要成果:
- 用Th2-细胞因子治疗的RHE显示,胺NS与不和脂肪酸链的增加.
- 观察到胺NS的变化:和NS的增加≤40个碳,减少NS的≥42个碳.
- 在模仿AD的RHE模型中发现了胺EOS的显著下降.
结论:
- 实验室RHE模型有效地复制了在人类亚托皮肤中观察到的关键脂质特征变化.
- 在陶胺NS和EOS亚类中观察到的变化为AD病原体提供了洞察力.
- 这种经过验证的模型是未来对新型AD治疗方法的研究和查的宝贵工具.
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