自强化的可激活纳米药物用于增强化学动力学/化疗联合治疗
Xiaowen He1,2, Mingming Liu1, Mingzhi Du1
1State Key Laboratory of Organic Electronics and Information Displays & Institute of Advanced Materials (IAM), Nanjing University of Posts & Telecommunications, 9 Wenyuan Road, Nanjing 210023, People's Republic of China.
Nanotechnology
|January 23, 2024
概括
这项研究引入了一种新的纳米医学,用于联合化学动力学和化疗. 纳米医药通过放大活性氧物种 (ROS) 和改善过氧化利用率来增强癌症治疗效果.
科学领域:
- 生物医学工程 生物医学工程
- 纳米医学是一种纳米医学.
- 癌症治疗 癌症治疗
背景情况:
- 化学动力学疗法 (CDT) 由于瘤特异性和最小的副作用,对癌症治疗具有前景.
- 瘤中低水平的过氧化 (H2O2) 限制了传统CDT的有效性.
- 将CDT与其他治疗方式结合起来,可以克服这些局限性.
研究的目的:
- 开发一种自我放大,可激活的纳米药物 (PCPTH NP),用于增强化学动力学/化疗.
- 为了研究结合坎普托他 (CPT) 和黑的协同效应,以改善癌症治疗.
- 评估纳米医药的H2O2响应性药物释放和ROS放大能力.
主要方法:
- 合成PCPTH NP,一种由H2O2可激活前药物 (PEG-PCPT) 和半导体组成的纳米药物.
- 在体外和体内评估PCPTH NP的药物释放特征,H2O2转化为基,以及抗癌疗效.
- 评估纳米药物的生物安全性及其提高细胞内活性氧物种 (ROS) 调节的能力.
主要成果:
- PCPTH NP 证明了 H2O2 度依赖的 CPT 和 hemin 的释放.
- 在酸性条件下,纳米药物有效地催化H2O2转化为基 (·OH).
- 与PCPT NP (没有血红蛋白) 相比,PCPTH NP在体外和体内都表现出更高的抗癌疗效,具有良好的生物安全性.
- 释放的CPT上调了细胞内ROS,可能为增强药物释放和CDT疗效创造一个积极的反循环.
结论:
- 开发的PCPTH NP是一种有效的纳米药物,用于联合化学动力学/化疗.
- 这种方法成功地解决了瘤中低H2O2水平的挑战,提高了CDT的疗效.
- 自放大,ROS生成机制为高度瘤特异性的癌症治疗提供了一个有希望的策略.
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