瓶式纳米电机扩大瘤氧化应激增强过载/化学动力疗法
Yuejun Jiang1,2, Cong Xu1, Yunshi Li1,2
1Department of Medicine Ultrasonics, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, China.
Small (Weinheim an der Bergstrasse, Germany)
|July 4, 2024
概括
这项研究引入了一种以氧为驱动的纳米电机,用于癌症治疗. 这种纳米电机积极穿透瘤,增强协同氧化应激,改善癌细胞死亡.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 材料科学 材料科学 材料科学
背景情况:
- 多功能,对刺激有反应的纳米医学对癌症治疗具有前途.
- 瘤透率较低限制了传统纳米药物的有效性.
- 开发具有增强瘤向和透能力的纳米载体至关重要.
研究的目的:
- 开发一种以氧为驱动的基于的纳米电机,用于增强癌症治疗.
- 为了研究纳米电机在瘤微环境 (TME) 内的活性传递能力.
- 通过增强氧化应激来评估纳米电机的协同治疗效应.
主要方法:
- 用氧化 (MnO) 和过氧化 (CaO2) 纳米粒子装载的基于的纳米电机的制造.
- 在酸性TME中利用CaO2和MnO的级联反应产生氧和活性氧物种 (ROS).
- 评估纳米电机的自我推进,瘤透,细胞吸收和抗瘤功效在体外和体内.
主要成果:
- 开发的Si-电机在TME中展示了氧气驱动的推进.
- 纳米电机实现了增强瘤透和细胞吸收.
- 协同氧化应激因细胞内Ca2+过载,谷氨耗尽和Mn2+介导化学动力学疗法 (CDT) 而放大,导致显著的瘤细胞死亡.
结论:
- 由TME驱动的Si-电机为活性协同癌症治疗提供了一个有效的平台.
- 纳米电机设计克服了瘤透率较低的局限性.
- 这种方法为提高纳米医学在癌症治疗中的有效性提供了一个有希望的策略.
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