双响应的生物可变基纳米粒子促进巨细胞M1极化改善质母细胞瘤免疫抑制微环境
Hanxue Meng1, Mengzhen Wang1, Yinuo Shen1
1School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200241, China.
ACS applied bio materials
|February 2, 2026
概括
研究人员开发了一种新型纳米粒子 (VTKFA),通过将免疫抑制性瘤相关巨细胞 (TAMs) 重编程到抗瘤状态,从而提高免疫疗法的有效性,来对抗质母细胞瘤 (GBM).
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:
- 质母细胞瘤 (GBM) 免疫疗法面临着由瘤相关巨细胞 (TAM) 主导的免疫抑制瘤微环境带来的挑战.
- 从支持瘤的M2表型转变为抗瘤的M1表型是GBM的一个关键治疗策略.
研究的目的:
- 在GBM治疗中开发一种双响应纳米粒子,用于刺激触发的药物释放和TAM再极化.
- 设计一种可生物转化纳米粒子 (VTKFA),用于控制氧化 (NO) 前药物 (JS-K) 和NO激活探头 (TDTCD) 的输送.
主要方法:
- 制造与JS-K和TDTCD共同装载的类似病毒的二氧化纳米粒子 (vSiO2).
- 表面涂层用铁 (TA-Fe3+) 网络复合与Angiopep-2 (Ang-2) 进行pH触发的分解和增强细胞吸收.
- 利用谷氨 (GSH) 和酸性瘤微环境响应性来控制NO释放和TAM M1再极化.
主要成果:
- 纳米粒子涂层在酸性条件下分解,促进细胞吸收和瘤透.
- 细胞内GSH触发了纳米粒子降解,JS-K释放,NO生成和TDTCD光激活.
- 释放的NO与芬顿反应中的基基 (•OH) 协同作用,将TAM重新编程为M1表型,缓解免疫抑制.
结论:
- 开发的VTKFA纳米粒子提供了一个多功能平台,用于刺激响应药物输送和在GBM中有效的TAM再极化.
- 这种方法显示出克服免疫抑制瘤微环境和抑制GBM进展的希望.
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