通过化化伊米达框架局部输送分子能增强癌症免疫疗法
Xiang Liu1, Weidong Wang1, Tianze Wu2
1Department of Chemistry Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials, Fudan University Shanghai 200433, China.
ACS applied materials & interfaces
|August 27, 2025
概括
这项研究引入了一种新免疫疗法,使用F7-ZIF纳米颗粒来加强癌症治疗. 这种方法通过增加瘤细胞对抗体的可访问性来提高免疫检查点阻塞疗法的有效性.
科学领域:
- 生物医学工程
- 纳米技术
- 免疫疗法
背景情况:
- 提高免疫检查点阻断 (ICB) 的有效性对于癌症治疗至关重要.
- 分子 (H2) 具有免疫调节作用和高组织透率.
- 开发局部的H2输送系统可以在瘤微环境中增强免疫疗法.
研究的目的:
- 开发一种用于增强癌症免疫疗法的新输送系统.
- 研究基于的治疗与抗体治疗的协同效应.
- 评估F7-ZIF/H2与抗CD47和抗PD-L1疗法的治疗潜力.
主要方法:
- 合成高H2有效载荷和持续释放的七度化化化物框架纳米板 (F7-ZIF).
- 用F7-ZIF加载H2 (F7-ZIF/H2) 并评估其对瘤细胞的影响,包括线粒体损伤和亡.
- 评估CD47对瘤细胞的上调及其对抗CD47抗体结合和有效性的影响.
- 使用RNA测序来了解CD47阻塞和抗体依赖细胞细胞的机制.
- 在不同大小的黑色素瘤模型中测试组合疗法,并评估抗PD-L1的全身免疫力.
主要成果:
- F7-ZIF/H2有效释放了H2和Zn2+,诱导了瘤细胞中的线粒体损伤和亡.
- F7-ZIF/ H2显著上调了瘤细胞的CD47,增强了抗CD47抗体的结合和细胞形成.
- 结合F7- ZIF/ H2和抗CD47的治疗实现了高瘤抑制率 (小瘤为90%,大瘤为83%).
- 添加抗PD-L1激发了全身T细胞免疫力,拒绝了原发性和远端瘤.
- 开发的系统显示了气体辅助癌症免疫治疗的巨大潜力.
结论:
- F7-ZIF/H2作为癌症免疫治疗的有效局部输送系统.
- 通过多种机制,F7- ZIF/ H2与抗CD47和抗PD- L1的组合增强了抗瘤功效.
- 这种方法为改善免疫检查点阻断疗法和克服瘤抵抗提供了有希望的策略.
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