基于多刺激反应的氧化应激/铁灭组合抗瘤纳米酶,基于葡萄糖氧化酶和PEG-PAAA构建
Miaoxin Chen1, Gaoyang Li1, Xiaoyu Ji2
1State Key Laboratory of Chemical Engineering and School of Chemistry & Molecular Engineering, East China University of Science and Technology, Shanghai 200237, PR China.
International journal of biological macromolecules
|June 24, 2025
概括
这项研究引入了一种用于癌症治疗的新型纳米酶系统. 该系统使用近红外光激活葡萄糖氧化酶,产生反应性氧物种并诱导铁致死,以有效治疗瘤,副作用最小.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 酶工程是什么? 酶工程是什么?
背景情况:
- 酶在疾病治疗方面具有高的特异性和效率,但在循环稳定性和转染方面面临挑战.
- 葡萄糖氧化酶 (GOx) 在ferroptosis中起着至关重要的作用,这是癌症治疗中的一个关键过程.
- 开发稳定有效的纳米酶输送系统对于治疗应用至关重要.
研究的目的:
- 通过将光热效应与酶活性相结合,开发一种用于增强癌症治疗的新型纳米酶系统.
- 为了提高葡萄糖氧化酶 (GOx) 的稳定性和目标传递,使用对近红外 (NIR) 敏感的普鲁士蓝 (PB) 和热敏聚合物 (PEG-PAA) .
- 研究由纳米酶系统诱导的氧化应激和铁灭的协同抗瘤效应.
主要方法:
- 制造PB/GOx@PAA-PEG纳米颗粒使用自组装NIR响应的普鲁士蓝 (PB) 和热敏感的PEG-PAA.
- 尼尔射线照射引发PEG-PAA外的水友性-性过渡,使GOx暴露在葡萄糖中.
- 在体外研究使用基于细胞的测试来评估生物相容性,细胞内活性氧物种 (ROS) 水平,细胞毒性和细胞死亡机制.
主要成果:
- 开发的PB/GOx@PAA-PEG纳米颗粒证明了NIR触发的GOx.释放和激活.
- 尼尔射线照射诱导局部高温和高效生成的基 (•OH) 通过葡萄糖氧化和PB催化.
- 基于细胞的实验证实了良好的生物相容性,细胞内ROS升高,以及通过氧化应激和铁亡的协同抗瘤效应.
结论:
- 纳米酶系统在癌症治疗中表现出高效率和低副作用.
- 光热疗法,氧化应激和铁灭的协同作用为多模式瘤治疗提供了一个有希望的策略.
- 这项研究为开发用于各种癌症的先进纳米疗法提供了有效的策略.
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