在斑马鱼肝细胞中,聚乙烯微型和纳米塑料诱导的独特的脂质体反应
Tiantian Wang1, Miquel Perelló Amorós2, Gemma Lopez Llao1
1Environmental Chemistry Department, IDAEA -CSIC-, C/ Jordi Girona, 18-26, 08034, Barcelona, Spain; PhD Program Aquaculture, University of Barcelona, Spain.
Aquatic toxicology (Amsterdam, Netherlands)
|February 25, 2025
概括
聚烯微塑料和纳米塑料对斑马鱼肝细胞的影响不同. 纳米塑料显示出更大的毒性,改变脂质新陈代谢,并可能诱导亡,突出显示MNP风险评估中的颗粒大小.
科学领域:
- 环境毒理学环境毒理学
- 细胞生物学 细胞生物学
- 利皮多米克 (Lipidomics) 是一种消化剂.
背景情况:
- 微型和纳米塑料 (MNP) 带来越来越多的环境和健康风险.
- 越来越多地认识到MNP在水生生物中的大小依赖性毒性.
- 根据颗粒大小对肝脂层调节的研究仍然不足.
研究的目的:
- 研究聚烯微塑料 (MP) 和纳米塑料 (NP) 对斑马鱼肝细胞的影响.
- 分析粒子大小对细胞脂质组和基因表达的影响.
- 阐明MNP在肝细胞中毒性的分子机制.
主要方法:
- 斑马鱼肝 (ZFL) 细胞暴露于1μm MPs和52nm NPs.
- 通过ZFL细胞对MP和NP的内部化评估.
- 脂质组分析和基因表达特征分析.
主要成果:
- 议员和NP都被ZFL细胞内部化,NP显示出更明显的效果.
- MPs降低了多不和脂,而NP增加了以太结合酸胆.
- 国会议员改变了脂质代谢基因表达,包括对微小三糖转移蛋白 (mtp) 基因的下调.
- NP诱导了剂量依赖的脂质积累,并暗示了胺介导的亡的激活.
结论:
- 颗粒大小显著影响斑马鱼肝细胞中MNP毒性机制.
- 脂质组分析是了解MNP诱导的毒性的一个有价值的工具.
- 考虑颗粒大小对于准确评估MNP的环境和健康风险至关重要.
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