酶/pH双响应工程纳米颗粒用于改善瘤免疫化疗
Zefeng Liu1, Xiaohan Hao1, Jieying Qian2
1School of Medicine, South China University of Technology, Guangzhou, Guangdong 510006, P. R. China.
ACS applied materials & interfaces
|February 29, 2024
概括
这项研究介绍了CMFn@OXA,一种用于癌症免疫治疗的新型纳米粒子. 它结合了化疗和免疫检查点阻塞,在小鼠中显示出改善的瘤抑制和存活率,副作用较少.
科学领域:
- 在瘤学瘤学.
- 纳米技术纳米技术
- 免疫治疗是一种免疫疗法.
背景情况:
- 免疫检查点封锁 (ICB) 与化疗相结合,可以提高疗效,但也面临挑战.
- 化疗缺乏瘤特异性导致不良反应.
- 单克隆抗体具有有限的组织透,并引起与免疫相关的不良事件.
研究的目的:
- 开发一种双响应纳米粒子 (CMFn@OXA) 用于向癌症治疗.
- 为了实现抗PD-L1和氧化的受控释放.
- 克服传统组合疗法的局限性.
主要方法:
- 设计了基于费里的工程纳米粒子 (CMFn@OXA).
- 由瘤微环境 (MMP-2/9和酸性溶解体) 触发的双反应性药物释放.
- 在体内评估瘤积累,药物释放,治疗疗效和生物相容性.
主要成果:
- CMFn@OXA证明了抗PD-L1和氧化的瘤特异性积累和受控释放.
- 这种纳米粒子有效地阻断了PD-1/PD-L1的相互作用,并通过细胞内输送了oxaliplatin.
- 在具有卓越生物相容性的小鼠中,CMFn@OXA显著抑制了瘤生长和延长了生存时间.
结论:
- CMFn@OXA代表了一种有前途的双响应纳米药物,用于癌症免疫治疗.
- 这一策略增强了化疗和ICB的协同效应.
- CMFn@OXA提供了一种潜在的解决方案,以提高癌症治疗的安全性和有效性.
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