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一个针对线粒体的NIR-II调节器用于协同性铁 - 免疫疗法

Miao Wang¹, Qihang Ding^1,2,3,4, Wuyue Su^1,2,3,5

¹Department of Radiation and Medical Oncology, Zhongnan Hospital of Wuhan University, Hubei Cancer Clinical Study Center & Hubei Key Laboratory of Tumor Biological Behaviors, School of Pharmaceutical Sciences, Wuhan, 430071, China.

Small (Weinheim an der Bergstrasse, Germany)

|April 14, 2025

概括

这项研究开发了HD-FA纳米颗粒,以诱导胃癌中的免疫细胞死亡. 这种方法可以增强抗瘤免疫力,并显示出与免疫检查点抑制剂的协同疗法的前景.

科学领域:

生物医学工程生物医学工程
纳米技术纳米技术
癌症免疫学癌症免疫学

背景情况:

胃癌 (GC) 由于免疫抑制瘤微环境,对免疫检查点抑制剂 (ICI) 的反应有限.
诱导免疫细胞死亡 (ICD) 对于克服这种限制和增强抗瘤免疫力至关重要.

研究的目的:

开发用于胃癌向治疗的新型纳米粒子.
研究这些纳米粒子在诱导免疫细胞死亡和与ICI协同作用方面的潜力.

主要方法:

在DSPE-PEG-FA中开发HD-FA纳米颗粒,封装一个新的线粒体向NIR-II调制器 (HD).
纳米粒子性能的体外和体外评估,包括瘤积累,反应性氧物种生成和铁灭诱导.
评估免疫应答调节,包括树突细胞成熟,T细胞频率和骨髓衍生抑制细胞水平.

主要成果:

HD-FA纳米颗粒显示出优越的时空分辨率,瘤积累和最小的毒性.
激光照射HD-FA诱导的ferroptosis和GC细胞中的氧化应激通过抑制SLC7A11/GSH/GPX4轴,触发ICD.
治疗HD-FA导致了主要和远程瘤的显著抗瘤活性,增强了抗瘤免疫力,并改善了免疫细胞概况.

结论:

HD-FA纳米颗粒代表了胃癌免疫性协同疗法的新NIR-II调节器.
这种方法具有显著的潜力,通过克服ICI耐药性来推进胃癌的治疗.

关键词:

一个NIR-II调制器.抗瘤免疫活性抗瘤免疫活性铁性化 (ferroptosis) 是一种免疫性细胞死亡免疫性细胞死亡针对线粒体的向.

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