基于声动力学疗法级联增强策略的铁灭增强系统,用于三阴性乳腺癌治疗
Juying Zhang1,2, Hanmei Li1,2, Litao Ye1,2
1School of Medical Imaging, North Sichuan Medical College, Nanchong, Sichuan 637000, China.
Regenerative biomaterials
|June 26, 2025
概括
二氧化纳米颗粒通过产生活性氧物种 (ROS) 和耗尽谷 (GSH) 来促进三阴性乳腺癌的铁灭疗法,提高治疗效率.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 在瘤学瘤学.
背景情况:
- 铁亡,一种新的细胞死亡途径,显示出对三阴性乳腺癌 (TNBC) 治疗的希望.
- 瘤微环境因素,如低活性氧物种 (ROS) 和高谷氨 (GSH) 限制了铁灭菌的有效性.
- 探索二氧化纳米粒子 (MnO2NP) 克服这些限制.
研究的目的:
- 开发一种使用MnO2NP促进铁灭的系统,用于增强TNBC治疗.
- 研究MnO2NP在瘤对铁亡的敏感化中的机制.
- 评估开发系统的治疗疗效和安全性.
主要方法:
- 构建一个Ce6-MnO2-BSA纳米粒子系统,封装MnO2NP和e6.6.
- 使用超声波照射触发ROS生成和氧气生产.
- 评估对GSH水平,氧化应激,自和ferroptosis in vitro和 in vivo的影响.
主要成果:
- MnO2 NPs消耗GSH和H2O2,产生ROS和氧气,缓解瘤缺氧.
- 超声触发的纳米粒子诱导了ROS风暴,耗尽了GSH并促进了铁亡.
- 该系统增强了自,增加了细胞内铁,并有效地抑制了TNBC生长,毒性最小.
结论:
- Ce6-MnO2-BSA纳米粒子系统有效地增强了TNBC中的铁.
- 这一策略克服了TME的局限性,并为TNBC治疗提供了有前途的方法.
- 开发的系统为基于铁灭的癌症治疗提供了新的视角.
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