银和聚乙烯纳米颗粒通过细胞质雌激素受体激活雌激素信号
Szymon Adam Lekki-Porębski1,2, Sylwia Męczyńska-Wielgosz3, Marcin Kruszewski3,4
1Centre for Digital Biology and Biomedical Science - Biobank Lodz, Faculty of Biology and Environmental Protection, University of Lodz, 90-236, Lodz, Poland. szymon.lekki.porebski@edu.uni.lodz.pl.
Scientific reports
|December 4, 2025
概括
银纳米粒子 (AgNPs) 和纳米塑料通过激活乳腺癌细胞中的雌激素受体信号来破坏内分泌通路. AgNP增强增殖,而联合暴露会影响基因表达,可能会影响癌症的进展.
科学领域:
- 环境健康 环境健康
- 纳米毒理学研究
- 内分泌学 在内分泌学.
背景情况:
- 环境污染物,包括内分泌干扰化学物质 (EDC),干扰激素功能,并构成公共健康风险,如乳腺癌发病率增加.
- 纳米塑料和银纳米颗粒 (AgNPs) 是普遍存在的环境污染物,对荷尔蒙平衡有很大程度上未知的影响.
- 这些纳米材料可以穿透生物障碍,在组织中积累,并可能影响雌激素受体 (ESR1) 信号传递.
研究的目的:
- 研究纳米塑料 (特别是纳米聚烯,PSNP和AgNP) 的内分泌干扰潜力.
- 确定AgNP和PSNP如何与雌激素受体阳性 (ER+) 乳腺癌细胞中的ESR1信号相互作用.
- 阐明纳米材料对细胞增殖和基因表达产生影响的机制.
主要方法:
- 暴露ER+乳腺癌细胞的AgNP和PSNP,有或没有雌激素 (E2).
- 评估ESR1介导的细胞增殖和细胞周期进展.
- 对ESR1信号依赖基因表达的分析,包括与细胞循环,增殖和上皮-介质酶过渡相关的基因.
- 评估他莫西芬对AgNP诱导反应的影响.
主要成果:
- AgNP显著增强了ESR1介导的细胞增殖和ER+细胞的S相进展,特别是在缺乏雌激素的条件下,通过tamoxifen阻止的连接体独立机制.
- AgNP降低了关键ESR1信号依赖基因的调节,这些基因参与了细胞循环和增殖 (例如,IRS1,NCOR1,MED1).
- PSNP 显示出较轻的效果,仅在 E2.2 的存在下刺激 ESR1 激活. 同时暴露于AgNP和PSNP以E2依赖的方式改变了特定的基因表达 (CITED2,BDNF,BRCA1),并减轻了AgNP诱导的BRCA1减少.
结论:
- 像AgNPs和PSNPs这样的纳米材料可以调节ESR1信号,从而提高ER+乳腺癌细胞的细胞增殖和细胞周期进展.
- AgNP表现出强大的ESR1激活,而PSNP则具有较弱的雌激素依赖效应.
- 这些发现突出了纳米材料通过蛋白激酶介导ESR1调制对癌症扩散的潜在不良影响,强调需要进一步进行毒理学评估.
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