聚烯纳米颗粒增强高葡萄糖毒性,与C. elegans中胰岛素信号通路的改变相关
Ziheng Zhuang1, Tianwen Liu1, Zhengying Liu2
1Changzhou University, Changzhou, China.
Ecotoxicology and environmental safety
|February 1, 2024
概括
聚乙烯纳米颗粒 (PS-NPs) 暴露会通过改变胰岛素信号通路,使Caenorhabditis elegans的高葡萄糖毒性恶化. 这项研究强调了在高葡萄糖环境中与PS-NP相关的健康风险.
科学领域:
- 环境毒理学环境毒理学
- 分子生物学分子生物学
- 遗体学 遗体学 是一个学科.
背景情况:
- 高水平的葡萄糖可以引起毒性.
- 纳米粒子暴露是一个日益严重的环境问题.
- 环境污染物和代谢压力之间的相互作用尚未完全理解.
研究的目的:
- 研究聚乙烯纳米颗粒 (PS-NP) 对高葡萄糖诱导毒性的影响.
- 阐明胰岛素信号通路在PS-NP中介毒性增强中的作用.
- 用Caenorhabditis elegans作为一种模型生物来研究这些影响.
主要方法:
- 暴露于不同度的PS-NPs和高葡萄糖的Caenorhabditis elegans.
- 评估寿命和运动行为作为毒性终点.
- 使用RNA干扰 (RNAi) 的胰岛素信号通路的关键组件的基因表达分析.
主要成果:
- 暴露于PS-NP (10和100μg/L) 显著增加了高葡萄糖毒性.
- 通过增加daf-2,age-1,akt-1/2和胰岛素基因表达,PS-NP改变了胰岛素信号传递,同时降低了daf-16和sod-3的表达.
- RNAi实验证实了特定的胰岛素通路基因参与调解PS-NP诱导的毒性增强.
结论:
- 聚乙烯纳米颗粒通过加剧高葡萄糖毒性构成风险.
- 胰岛素信号通路的改变与PS-NP增强的毒性关键相关.
- 这项研究提供了关于在代谢压力条件下纳米粒子毒性背后的分子机制的见解.
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