1,4-二素以Nrf2-依赖的方式诱导表皮-半细胞转换和致癌
Ziwei Wang1, Chitra Thakur1, Zhuoyue Bi1
1Stony Brook Cancer Center, Department of Pathology, Renaissance School of Medicine, Stony Brook University, Stony Brook, New York, USA.
Journal of extracellular vesicles
|April 30, 2025
概括
环境污染物1,4-二氧化 (1,4-D) 是人类的致癌物,通过Nrf2激活驱动上皮细胞的恶性转变. 这个过程涉及细胞外囊泡 (EVs),促进癌症转移.
科学领域:
- 环境毒理学环境毒理学
- 细胞和分子瘤学细胞和分子瘤学.
- 致癌的发生是致癌的产生.
背景情况:
- 1,4-二氧化 (1,4-D) 在人类中的致癌潜力仍然不清楚.
- 1,4-D是一种具有潜在健康风险的环境污染物.
研究的目的:
- 为了研究1,4-D对人类上皮细胞的致癌作用.
- 阐明Nrf2信号在1,4-D诱导的致癌过程中的作用.
- 确定分子机制,包括细胞外囊泡 (EVs),参与1,4-D致癌.
主要方法:
- 暴露人类支气管上皮细胞 (BEAS-2B) 有或没有Nrf2淘汰,暴露在1.25-20ppm的1,4-D中2个月.
- 检测恶性转变:无位生长,迁移,入侵和异种移植的瘤性.
- 综合RNA测序和蛋白质组学分析.
- 在受体细胞中进行EV特征,载荷分析和功能测试.
主要成果:
- 持续的1,4-D暴露诱导了以Nrf2-依赖的方式恶性转变.
- 转变的细胞显示出增强的瘤生成潜力和转移相关的特性.
- 1,4-D激活了Nrf2,促进了EV生物发生和用Syndecan 4 (SDC4) 和其他EMT相关蛋白质加载货物.
- Nrf2淘汰减少了EV中的SDC4,损害了EV吸收和EMT传播.
- 富含电动汽车的SDC4对于电动汽车的采用和EMT便利性至关重要.
结论:
- 1,4-D作为人类的致癌物,主要通过Nrf2-依赖的途径.
- Nrf2激活调节了EV生物发生和功能,促进了癌症转移.
- 针对Nrf2-介导的EV通路可以提供针对1,4-D诱导癌症的治疗策略.
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