由Ostreopsis产生的代谢物的毒性反应 cf. 在一个由细胞类型组成的面板上的卵子
Rachelle Lanceleur1, Marin-Pierre Gémin2, Anne-Louise Blier1
1ANSES, Fougères Laboratory, Toxicology of Contaminants Unit, French Agency for Food, Environmental and Occupational Health & Safety, Fougères, 35 306, France.
概括
奥斯特罗普西斯 (Ostreopsis) 的开花 cf. 卵巢产生卵毒素 (OVTXs),导致人类中毒. 这项研究研究了OVTX在各种细胞类型中的毒性,揭示了细胞毒性和促炎作用,尽管与毒素机制不同.
科学领域:
- 海洋生物学 海洋生物学
- 毒理学 毒理学 毒理学
- 细胞生物学 细胞生物学
背景情况:
- 奥斯特罗普西斯 (Ostreopsis) 的开花 cf. 卵子与人类中毒有关.
- 卵毒素 (OVTXs) 是主要的毒素,类似于毒素 (PlTX).
- 由于缺乏商业标准,OVTXs的毒性数据有限.
研究的目的:
- 评估OVTXs对各种人体细胞类型的毒性.
- 为了比较OVTXs与毒素 (PlTX) 的作用.
- 研究OVTX诱导的细胞毒性和炎症背后的机制.
主要方法:
- 来自地中海O. cf. 的生成提取物和纯化的OVTX-a和OVTX-d. 卵子菌株. 卵子菌株.
- 在皮肤,肠道,肺部,肝脏和神经系统的细胞系上测试化学样本和Pltx.
- 评估了细胞毒性和中白素-8 (IL-8) 释放作为炎症反应的指标.
主要成果:
- 在O. cf. 卵子提取物显示剂量依赖的细胞毒性和增加IL-8在角质细胞中的释放.
- 含有OVTX的碎片具有细胞毒性,主要在肝细胞中诱导IL-8.
- 非OVTX分片在肺和肝细胞中也表现出细胞毒性和促炎作用.
- OVTX-a和OVTX-d表现出类似的细胞毒性,肠道和皮肤细胞略有差异.
- 只有PlTX诱导了显著的促炎效应,主要在角质细胞中.
结论:
- OVTX对多种细胞类型具有细胞毒性,与Pltx共享Na+/K+ ATPase的点.
- 不同的机制可能解释了OVTXs和PltX之间的不同促炎作用.
- 需要进一步的研究来阐明非OVTX成分在毒性和炎症中的作用.
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