细菌对Ceria纳米颗粒的敏感性:周围分子的关键作用
Wanqin Dai1,2, Changjian Xie1,2, Yong Xiao3
1CAS Key Lab for Biomedical Effects of Nanomaterials and Nanosafety, CAS-HKU Joint Laboratory of Metallomics on Health & Environment, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, China.
Environmental science & technology
|July 4, 2024
概括
周围的酸盐等分子可以改变细菌对纳米颗粒 (纳米细菌) 的反应方式. 这改变了纳米颗粒的减少,增加了离子毒性,影响了环境安全评估.
科学领域:
- 纳米毒理学研究
- 环境科学 环境科学
- 微生物学 微生物学
背景情况:
- 纳米毒理学研究越来越多地关注纳米粒子-环境-生物相互作用.
- 之前的研究强调了环境分子如何改变纳米粒子特性,影响毒性.
- 这项研究探讨了一个新的方面:环境分子调节生物体对纳米颗粒的敏感性.
研究的目的:
- 研究周围分子如何影响细菌对纳米颗粒的敏感性.
- 阐明改变敏感性对纳米粒子-生物相互作用的影响.
- 在复杂的环境中了解纳米粒子诱导毒性背后的机制.
主要方法:
- 研究了纳米粒子 (纳米),酸盐和细菌之间的三元关系.
- 分析了细菌呼吸道和纳米颗粒的减少.
- 利用转录组分析来识别分子机制.
主要成果:
- 酸盐改变了细菌的呼吸道,增强了细菌表面的纳米纤维减少.
- 增强的减少导致Ce3+离子的释放增加,增加了离子特异性毒性.
- 转录组分析揭示了细菌能量代谢和毒性的酸盐诱导的变化.
结论:
- 周围的分子可以直接改变细菌对纳米粒子的敏感性,而不仅仅是纳米粒子的特性.
- 这种相互作用影响了纳米粒子诱导的毒性和环境命运.
- 这些发现为了解纳米生物相互作用和生态毒性提供了新的框架.
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