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一种由光触发的J聚合调节的疗法转换:从光动力学/光热疗法到长期的化学动力学疗法,以有效的瘤切除
Kai Wei1, Yanxin Wu1, Xian Zheng1
1State Key Laboratory of Chemical Resource Engineering, Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, 100029, Beijing, P. R. China.
Angewandte Chemie (International ed. in English)
|April 5, 2024
概括
这项研究介绍了一种新的光触发纳米平台,可以将光动力疗法和光热疗法转换为长期化学动力疗法. 这种方法通过维持基基的产生来改善瘤治疗,从而有效地促进癌细胞的亡.
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:
- 活性氧物种 (ROS) 对于瘤治疗至关重要,光动力学疗法 (PDT) 和化学动力学疗法 (CDT) 的联合疗法显示出增强的疗效.
- 目前的限制包括CDT过早激活,阻碍持续基 (⋅OH) 生成和整体治疗效率.
研究的目的:
- 开发一个光触发的纳米平台,将PDT/光热疗法 (PTT) 转换为持续的CDT.
- 为了调节分子聚合,以连续生成ROS和延长治疗效果.
主要方法:
- 基于分子聚合调节的光触发纳米系统 (Cu-PCy JNPs) 的制造.
- 使用有序J聚合来增强PDT/PTT,同时抑制最初的CDT.
- 调查光诱导的氨酸骨干的降解,以触发持续的⋅OH生成.
主要成果:
- -PCy JNPs在光照射时表现出强烈的光动力学和光热效应.
- 光照射触发了J-聚合的破坏,导致长期持续的CDT的顺序激活.
- 持续的⋅OH生成被观察到长达48小时,在癌细胞中诱导显著的氧化应激和亡.
- 由于优异的瘤积累和转化疗法策略,可以实现有效的体内瘤切除.
结论:
- 开发的纳米系统成功地将PDT/PTT转换为延长的CDT,克服了顺序ROS生成的局限性.
- 这种方法提供了一种新的策略,通过持续的化学动力学活性来增强基于ROS的癌症治疗.
- 这些发现为开发用于有效瘤切除的先进纳米药物提供了有希望的途径.
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