波蒂明A毒素通过ZAKα依赖的NLRP1炎症酶激活引起皮肤炎症
Léana Gorse1, Loïc Plessis2,3, Stephen Wearne4
1Institute of Pharmacology and Structural Biology (IPBS), University of Toulouse, CNRS, Toulouse, France.
EMBO molecular medicine
|February 13, 2025
概括
来自Vulcanodinium rugosum的海洋毒素导致了塞内加尔渔民的严重皮肤疾病. 毒素PortimineA破坏细胞功能,并通过ZAKα-NLRP1通路引发炎症,突出显示新的环境健康威胁.
科学领域:
- 海洋生物学 海洋生物学
- 毒理学 毒理学 毒理学
- 免疫学 免疫学 免疫学
背景情况:
- 2020-2021年严重急性皮肤炎的爆发影响了1000多名塞内加尔渔民.
- 暴露发生在漂流网捕捞活动期间,这表明环境原因.
研究的目的:
- 为了确定影响塞内加尔渔民的神秘疾病的致病原体.
- 阐明所观察到的皮肤炎和炎症背后的分子机制.
主要方法:
- 环境样本分析以检测海洋恐龙和毒素.
- 在体外研究中使用人类角质细胞来评估毒素对细胞过程的影响.
- 基于细胞的模型和有机型的皮肤/斑马鱼模型来研究ZAKα-NLRP1轴激活和下游效应.
主要成果:
- 海洋恐龙鞭状动物Vulcanodinium rugosum及其毒素PortimineA被确定为原因.
- 波提胺A抑制了核糖体功能,激活了应激激酶 (ZAKα,P38),并触发了NLRP1炎症酶的激活.
- 针对P38的NLRP1位点的突变赋予了对PortimineA.的耐药性.
- 证实ZAKα-NLRP1轴在实验模型中驱动皮肤亡和炎症.
结论:
- Vulcanodinium rugosum和PortimineA通过新兴的环境毒素对人类健康构成重大威胁.
- ZAKα-NLRP1信号通路对于调解PortimineA诱导的皮肤毒性至关重要.
- ZAKα和NLRP1代表了减轻PortimineA毒性的潜在治疗点.
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