...
首页> 外文期刊>Environmental research >Titanium dioxide nanoparticles induce apoptosis by interfering with EGFR signaling in human breast cancer cells
【24h】

Titanium dioxide nanoparticles induce apoptosis by interfering with EGFR signaling in human breast cancer cells

机译:通过干扰人乳腺癌细胞中的EGFR信号传导来诱导二氧化钛纳米颗粒诱导细胞凋亡

获取原文
获取原文并翻译 | 示例
           

摘要

Titanium dioxide nanoparticles, due to their smaller size and increased surface area comparted to the bulk form, are known to be bioreactive and have unexpected toxicological outcomes. Previous studies have shown that nanoscale titanium dioxide induces reactive oxygen species (ROS)-mediated cytotoxicity and genotoxicity. Although many reports have discussed the ROS-mediated cytotoxic effects of titanium dioxide nanoparticles (TiO2-NPs), their effects on the receptor-ligand association are unknown. In this study, the possibility that TiO2-NPs can interfere with the receptor-ligand binding was assessed by monitoring alterations in the phosphorylation status of proteins downstream of the epidermal growth factor receptor (EGFR) signaling cascade. TiO2-NPs blocked ligand-induced EGFR autophosphorylation, leading to the deactivation of EGFR downstream effectors such as Akt and extracellular signal-regulated kinase signaling, inducing cell death.
机译:已知已知其由于它们较小的尺寸和表面积增加到块状形式的表面积,因此已知生物反应性并具有意外的毒理学结果。以前的研究表明,纳米级二氧化钛诱导活性氧(ROS)介导的细胞毒性和遗传毒性。尽管许多报道讨论了二氧化钛纳米颗粒(TiO2-NPS)的ROS介导的细胞毒性作用,但它们对受体 - 配体关联的影响是未知的。在该研究中,通过监测表皮生长因子受体(EGFR)信号传导级联(EGFR)信号级联的蛋白质的磷酸化状态的改变来评估TiO2-NPS可以干扰受体 - 配体结合的可能性。 TiO2-NPS阻断了配体诱导的EGFR自磷酸化,导致EGFR下游效应诸如AKT和细胞外信号调节激酶信号传导,诱导细胞死亡。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号