化诱导的疗法用于增强的声动疗法
Jing Huang1,2, Jianping Meng1,2, Yijie Fan1,2
1Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 101400, China.
Materials horizons
|July 7, 2025
概括
用酸 (BTO) 增强化 (MgH2) 的声动疗法 (SDT) 克服了瘤免疫抑制. 这种组合疗法增强了抗瘤免疫力,并改善了对免疫检查点抑制剂的反应.
科学领域:
- 生物医学工程 生物医学工程
- 癌症治疗 癌症治疗
- 免疫学 免疫学 免疫学
背景情况:
- 瘤微环境 (TME) 具有免疫抑制作用,阻碍了癌症治疗的有效性.
- 免疫逃避和治疗耐药性是瘤学的主要挑战.
研究的目的:
- 调查化 (MgH2) 诱导的 (H2) 疗法的协同作用与酸 (BTO) 介导的声动疗法 (SDT).
- 评估组合治疗对调节TME和增强免疫检查点抑制剂 (aPD-1) 疗效的潜力.
主要方法:
- 超声波 (US) 激活了SDT的BTO,诱导了免疫细胞死亡 (ICD).
- MgH2微球释放H2以增加瘤细胞的破坏,并招募免疫细胞.
- 由MgH2衍生的离子 (OH-,Mg2+) 中和了酸性TME,减少了免疫抑制.
主要成果:
- 结合SDT和MgH2疗法在CT26瘤模型中,与单独BTO相比,显著增强了抗瘤疗效.
- 这种协同方法导致治疗小鼠的生存时间延长.
- MgH2治疗上调了T细胞上的PD-1表达,增加了瘤对aPD-1治疗的敏感性.
结论:
- MgH2通过放大瘤细胞的杀死和调节TME,协同增强BTO介导的SDT.
- 这种策略有效地克服了免疫抑制,并增强了T细胞介导的抗瘤反应.
- 该方法显示了提高SDT有效性和克服癌症治疗中免疫检查点抑制剂耐药性的广泛潜力.
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