响应瘤微环境的传递纳米系统可逆免疫抑制增强CO气/免疫治疗
Beibei Chen1,2,3, Kangli Guo1,2,3, Xiaoyi Zhao1,2,3
1State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical Technology Beijing China.
Exploration (Beijing, China)
|January 24, 2024
概括
这项研究引入了空心纳米平台,可以提供一氧化碳 (CO) 气疗法,以克服免疫抑制瘤微环境 (TME). 这种方法增强了抗瘤免疫力,并提高了癌症免疫治疗的疗效.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术 纳米技术
- 癌症研究 癌症研究
背景情况:
- 一氧化碳 (CO) 气体疗法通过诱导亡和抗瘤免疫来治疗癌症具有前途.
- 免疫抑制性瘤微环境 (TME) 限制了CO疗法的治疗疗效.
- 纳米材料为向药物输送和TME调制提供了潜力.
研究的目的:
- 开发一种新的空心结构纳米平台,用于增强碳排放和TME调制.
- 研究用于癌症免疫治疗的纳米平台的免疫调节特性.
- 将CO疗法与免疫检查点阻塞相结合,以获得协同作用的抗瘤效应.
主要方法:
- 制造空心粗MnO2纳米颗粒 (RMH),封装一个CO前药物,并用氨酸 (HA) 功能化.
- 通过STING通路激活和缺氧缓解,评估RMH诱导树突细胞成熟和M1巨分极的能力.
- 在瘤模型中评估对TME敏感的CO释放和与抗PD-L1的联合治疗.
主要成果:
- M-RMH纳米系统显示了增强的细胞吸收和TME响应性降解.
- RMH有效地促进了树突细胞成熟和M1巨细胞两极分化,缓解了瘤缺氧.
- 联合CO疗法和抗PD-L1免疫疗法显著抑制了初级和远程瘤的生长.
结论:
- 开发的空心纳米平台 (M-RMH) 是TME调制和增强的CO/免疫治疗的有效策略.
- 这种方法激活抗瘤免疫力,并逆转免疫抑制,为癌症治疗提供了一个有希望的途径.
- 纳米材料的形态优化和内在特性对于协同的癌症治疗至关重要.
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