一个多功能级联纳米反应器用于重塑瘤微环境,通过ROS/Zn实现线粒体功能障碍2+ 离子过载
Longhai Jin1, Shijie Zhou2,3, Tianqi Zhang1
1Department of Radiology, The Second Hospital of Jilin University, Changchun, 130041, China.
Small (Weinheim an der Bergstrasse, Germany)
|November 14, 2024
概括
这项研究引入了一种新的纳米反应器,通过重塑瘤微环境 (TME) 来增强癌症治疗. 纳米反应器促进反应性氧物种 (ROS) 的产生,并诱导线粒体功能障碍,以改善治疗结果.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症治疗 癌症治疗
背景情况:
- 化疗/光动力学疗法 (CDT/PDT) 通过产生活性氧物种 (ROS) 和引起线粒体功能障碍,对癌症治疗具有前景.
- 瘤微环境 (TME) 因素,如低H2O2,缺氧和高降低型谷氨 (GSH) 限制了动态疗法的疗效.
- 制定克服TME限制的策略对于提高抗癌治疗效率至关重要.
研究的目的:
- 设计一个多功能级联纳米反应器,用于重塑TME以增强动态治疗.
- 为了研究纳米反应器诱导ROS风暴和Zn2+离子过载用于线粒体功能障碍的能力.
- 通过TME调制和增强ROS生成,提高抗癌治疗的效率.
主要方法:
- 合成了一种牛血清白蛋白修饰的ZnO2@CeO2-ICG纳米反应器.
- 分析了纳米反应器的H2O2分解和CeO2的催化活性.
- 印ocyanine绿 (ICG) 在808nm光辐射下用于光动力疗法 (PDT).
- 研究了GSH消耗在再生Ce (III) 离子和提高CDT效率方面的作用.
- 通过ROS和Zn2+过载来评估线粒体功能障碍的诱导.
主要成果:
- 纳米反应器在TME中成功分解为H2O2和Zn2+离子.
- CeO2催化H2O2转化为OH和O2,而ICG在光线下产生单片氧 (1O2),促进PDT.
- 通过Ce(IV) 离子的GSH消耗再生了Ce(III) 离子,增强了CDT并减轻了ROS清理.
- TME重塑,ROS升高和Zn2+过载的综合作用导致了显著的线粒体功能障碍.
- 纳米反应器显示增强了抗瘤治疗效率.
结论:
- 开发的ZnO2@CeO2-ICG纳米反应器有效地重塑了TME以克服治疗限制.
- 这种纳米反应器策略通过创建ROS风暴并诱导线粒体功能障碍,显著增强动态疗法.
- 功能纳米反应器为提高抗癌疗法的疗效提供了一个有希望的方法.
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