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自主准无载体协调纳米疗法用于瘤微环境调制和增强化学动态瘤治疗

Zhongxiong Fan¹, Fukai Zhu², Feng Wu³

¹School of Pharmaceutical Sciences and Institute of Materia Medica, Xinjiang University, Urumqi 830017, China.

Colloids and surfaces. B, Biointerfaces

|July 29, 2025

概括

这项研究引入了一种新的纳米疗法 (PEM-CuII-MET),通过增加活性氧物种 (ROS) 和克服瘤微环境挑战,如缺氧和谷氨来增强癌症治疗. 它提高了化学动力学疗法 (CDT) 的疗效.

科学领域:

生物医学工程生物医学工程
纳米技术纳米技术
在瘤学瘤学.

背景情况:

基于活性氧物种 (ROS) 的癌症治疗是有前途的,但由于药物递送效率低和瘤微环境 (TME) 因素 (如缺氧和高谷氨 (GSH) 等) 受到限制.
开发向纳米治疗药物对于克服这些局限性和提高抗瘤疗效至关重要.

研究的目的:

设计和评估一种无载体,自我向的纳米疗法 (PEM-CuII-MET),用于增强ROS生成和改进化学动力学疗法 (CDT).
为了应对药物输送,瘤缺氧和TME中的GSH水平的挑战.

主要方法:

佩米特雷克斯 (PEM),铜离子 (CuII) 和甲胺 (MET) 的协调驱动的自我组装形成了PEM-CuII-MET (PCM) 纳米疗法.
利用叶酸受体向和TME刺激 (溶酶体酸,GSH) 进行向积累和药物释放.
调查MET对氧气消耗的影响,通过NADPH氧化酶 (NOX) 和超氧化物脱酶 (SOD) 生成ROS,以及CuII介导的GSH耗尽.

主要成果:

PCM 证明了有效的瘤积累和细胞内化,随后是药物快速释放.
释放的MET有效地通过抑制线粒体呼吸来缓解瘤缺氧,从而导致富含氧气的环境.
该纳米疗法成功地提高了过氧化 (H2O2) 水平,并促进了GSH的耗尽,显著提高了ROS积累,从而提高了CDT的疗效.

结论:

开发的纳米疗法 (PCM) 通过多种机制有效地放大了ROS生成.
通过PCM,可以重编程TME并显著提高化学动力瘤治疗的疗效.

关键词:

无载体协调纳米治疗药物化学动力学瘤疗法化学动力学瘤疗法多个 ROS 放大功率.自己定位的目标是自己.瘤微环境是一个微环境.

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