对于pH敏感的粘土纳米材料的最新进展,用于固体瘤的增强免疫疗法
1Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen, 518132, China. gordonxu@szbl.ac.cn.
Nanoscale
|November 5, 2025
概括
粘土纳米材料可以通过纠正pH和氧气水平来使瘤微环境正常化. 这种方法增强了抗瘤免疫反应,改善了固体瘤的免疫疗法疗效.
科学领域:
- 生物医学工程 生物医学工程
- 癌症免疫学 癌症免疫学
- 纳米医学是一种纳米医学.
背景情况:
- 瘤微环境 (TME) 存在显著的物理化学障碍,包括低pH值,缺氧和高反应性氧/物种 (ROS/RNS),这些障碍阻碍了免疫疗法,特别是CAR-T细胞疗法,在固体瘤中.
- 这些敌对的条件抑制了免疫细胞的功能,并限制了诸如CAR-T细胞疗法和免疫检查点封锁等治疗的有效性.
- 解决这些异常的物理化学因素对于增强抗癌免疫反应和改善治疗结果至关重要.
研究的目的:
- 审查最近在TME中恢复物理化学平衡的进展.
- 探索粘土纳米材料在克服TME相关的免疫治疗挑战方面的潜力.
- 讨论将"冷" (免疫抑制) 瘤转化为"热" (免疫透) 瘤的策略,以提高免疫治疗的疗效.
主要方法:
- 关于TME调制和纳米材料在癌症免疫治疗中的应用的当前文献的综述.
- 对调查粘土纳米材料对TME参数 (pH,O2水平) 影响的研究进行分析.
- 检查粘土纳米材料介导的免疫细胞招募和抗瘤活性的证据in vivo.
主要成果:
- 粘土纳米材料表明,它有能力纠正TME中异常的pH和氧气水平.
- 这些纳米材料可以将抗瘤免疫细胞招募到瘤组织中,从而克服免疫抑制障碍.
- 粘土纳米材料对TME的正常化导致了瘤生长的抑制in vivo.
结论:
- 在TME中恢复物理化学平衡是提高固体瘤免疫治疗疗效的关键策略.
- 粘土纳米材料提供了一种有希望的方法来使TME正常化,将其从免疫抑制转化为免疫允许.
- 对基于粘土纳米材料的策略的进一步研究有可能改善CAR-T细胞疗法和其他针对固体瘤的免疫疗法.
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