针对AML的金属聚烯纳米平台诱导铁化-ICD级联用于增强抗瘤免疫力
Shangqin Yang1,2, Jingxuan Wang3, Kerong Tu3
1Department of Hematology, School of Medicine, Sichuan Provincial People's Hospital, University of Electronic Science and Technology of China, Chengdu, China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|March 3, 2026
概括
一个新的纳米平台 (Fe-SH@Fn) 通过诱导铁亡和免疫细胞死亡来准急性髓性白血病 (AML). 这种方法克服了瘤免疫抑制,并增强了抗白血病的免疫反应.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 癌症治疗 癌症治疗
背景情况:
- 急性髓性白血病 (AML) 由于免疫性较低和免疫抑制性瘤微环境 (iTME) 存在治疗挑战.
- 需要有效的药物输送系统来克服AML治疗中的这些挑战.
研究的目的:
- 开发一种基于费里的纳米平台 (Fe-SH@Fn) 用于在AML中有针对性地同时输送什科宁 (SH) 和Fe3+.
- 研究Fe-SH@Fn在AML中诱导铁和免疫细胞死亡 (ICD) 的协同效应.
主要方法:
- 设计了一个封装shikonin (SH) 和Fe3+的费里纳米平台 (Fe-SH@Fn),用于CD71介导的AML细胞向.
- 研究了AML细胞内Fe-SH@Fn的分解,通过芬顿反应和SH诱导的ICD导致Fe2+驱动的铁亡.
- 评估Fe-SH@Fn治疗对瘤微环境的影响,包括树突细胞成熟,CD8+T细胞透和调节性T细胞群.
主要成果:
- Fe-SH@Fn在AML细胞中显示出协同作用的铁和ICD诱导.
- 在皮下AML模型中,用Fe-SH@Fn治疗导致显著的瘤生长抑制 (81.25%).
- 在没有观察到全身毒性的正型AML模型中,Fe-SH@Fn将中位生存时间延长了2.8倍.
结论:
- Fe-SH@Fn纳米平台提供了一种可翻译的策略,以克服AML免疫抑制.
- 有针对性的输送和协同的铁化-ICD激活是急性髓性白血病的一种有前途的治疗方法.
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