HIFU术后缺氧激活的金属有机框架调节瘤微环境以增强免疫疗法
Chengyan Luo1,2, Dezhou Wu1,2, Song Peng1
1Department of Radiology, Women and Children's Hospital of Chongqing Medical University, Chongqing, 400016, P. R. China.
Journal of nanobiotechnology
|February 1, 2026
概括
高强度聚焦超声波 (HIFU) 与新的金属有机框架 (MOF) 结合,有效地准瘤微环境. 这种方法可以增强抗瘤免疫力,抑制瘤生长和转移,并改善HIFU治疗后患者的预后.
科学领域:
- 生物医学工程 生物医学工程
- 纳米技术纳米技术
- 癌症免疫疗法癌症免疫疗法
背景情况:
- 高强度聚焦超声波 (HIFU) 显示,由于瘤微环境 (TME) 免疫抑制,刺激抗瘤免疫反应的有效性有限.
- 手术后的瘤往往表现出严重的缺氧,导致免疫抑制性TME并阻碍有效的免疫治疗.
研究的目的:
- 设计特定效果的金属有机框架 (MOF),以调节TME并增强HIFU治疗后的抗瘤免疫力.
- 开发一种基于MOF的系统,用于手术期间的监测和精确的瘤切除.
主要方法:
- 构造的MOF含有铁离子,banoxantrone (低氧激活前药物),NLG919 (IDO抑制剂) 和CaCO3.
- 利用光声成像用于手术期间的监测和精确的瘤切除.
- 研究了MOFs成分在触发免疫细胞死亡 (ICD) 和降低免疫抑制TME的协同作用.
主要成果:
- 由HIFU引起的严重缺氧激活了banoxantrone,它与铁离子合作,在瘤中触发ICD.
- NLG919和CaCO3通过抑制IDO-1通路和消耗乳酸分别有效降解了免疫抑制的TME.
- 设计的MOF证明了双边瘤生长和转移的显著抑制.
结论:
- 开发的MOF提供了一个成功的范式,用于增强身体对术后瘤的抗瘤免疫反应.
- 这一策略通过克服TME介导的免疫抑制来改善高强度聚焦超声波治疗的整体预后.
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