针对线粒体的HA涂层纳米系统用于ROS/CO生成和代谢重编程,以增强瘤杀伤性巨细胞极化
Na Peng1,2, Chun Song1, Xiaoting Liu1
1Key Laboratory of Coal Conversion and New Carbon Materials of Hubei Province, School of Chemistry and Chemical Engineering, Wuhan University of Science and Technology, Wuhan 430081, China.
ACS applied materials & interfaces
|November 6, 2025
概括
这项研究引入了一种针对线粒体的新型纳米系统,用于重编程瘤相关巨细胞 (TAM). 该系统有效地减少了M2类TAM,并通过调节瘤微环境来增强免疫疗法来抑制瘤生长.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症免疫疗法癌症免疫疗法
背景情况:
- 瘤相关巨细胞 (TAM) 两极化是瘤进展和免疫逃避的一个关键因素.
- 针对TAM进行再极化为癌症免疫治疗提供了一个有前途的策略.
- 线粒体功能障碍和反应性氧物种 (ROS) 生产与TAM极化有关.
研究的目的:
- 开发一种针对线粒体的纳米系统,用于反极化TAM并增强抗瘤免疫力.
- 研究纳米系统在调节瘤微环境和抑制瘤生长方面的有效性.
主要方法:
- 一个针对线粒体的纳米系统 (HA@MR@PCN-CORM) 的合成,使用基于的金属有机框架 (PCN-224),加载了释放CO的分子 (CORM-401).
- 用氨酸 (HA) 进行表面修饰,以向CD44受体和用三氨酸 (TPP) 增强线粒体积累.
- 在体外和体内对TAM再极化,ROS/CO生成,M2样TAM枯竭和抗瘤功效的评估.
主要成果:
- 该纳米系统有效地准TAM线粒体,在激光照射时诱导ROS和CO风暴,导致66.8%的M2类TAM死亡.
- 显著的M1/M2型TAM复极化 (比率从0.29增加到1.20) 和93.4%的瘤体积抑制 in vivo.
- 增强细胞毒性T淋巴细胞 (CD3+/CD4+,CD3+/CD8+) 和树突细胞 (DCs) 在瘤组织中的透.
结论:
- 开发的针对线粒体的纳米系统在免疫抑制瘤微环境中有效地消耗和调节TAM.
- 这一策略显示了通过重编程瘤免疫格局来增强抗瘤治疗的巨大潜力.
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