聚乙烯纳米颗粒暴露通过改变瘤微环境,加速小鼠卵巢癌的发展
Guangquan Chen1, Huang Shan2, Shiyi Xiong1
1Shanghai Key Laboratory of Maternal Fetal Medicine, Department of Fetal Medicine and Prenatal Diagnosis Center, Shanghai First Maternity and Infant Hospital, School of Medicine, Tongji University, Shanghai 201204, China.
The Science of the total environment
|October 6, 2023
概括
聚乙烯纳米塑料 (PS-NPs) 加速小鼠上皮卵巢癌 (EOC) 的生长,并降低癌细胞活力. 暴露会改变基因表达和瘤微环境,影响免疫反应和血栓模块蛋白调节.
科学领域:
- 环境科学 环境科学
- 毒理学 毒理学 毒理学
- 在瘤学瘤学.
背景情况:
- 微塑料和纳米塑料是广泛存在的环境污染物.
- 它们对人类健康的影响,特别是致癌性,仍然不清楚.
- 聚乙烯纳米塑料 (PS-NP) 是环境健康研究的重点.
研究的目的:
- 调查PS-NP对上皮卵巢癌 (EOC) 的影响.
- 阐明了PS-NP对EOC进展的影响背后的分子机制.
- 使用体外和体外模型评估PS-NP效应.
主要方法:
- 使用人类EOC细胞系 (HEY) 进行体外研究.
- 通过饮用水使用小鼠模型进行体内暴露.
- 进行了组织学分析,基因表达分析和途径分析.
主要成果:
- 暴露PS-NP在小鼠中加速了EOC瘤的生长,并以剂量依赖的方式降低了EOC细胞的活力.
- 在暴露于PS-NP的瘤组织中观察到线粒细胞数量的增加.
- 暴露于PS-NP显著改变了基因表达,影响了免疫反应和瘤微环境,特别是涉及血栓模块素 (THBD).
结论:
- 暴露于PS-NP会促进EOC瘤的生长,并降低癌细胞活力.
- 瘤微环境的变化,包括免疫相关途径和THBD表达,是关键机制.
- 这些发现为纳米塑料的致癌潜力提供了洞察力.
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