自性向Fe-Cu纳米酶用于瘤免疫微环境重塑和图像导向癌症免疫疗法
Li Yan1, Chao Chen2, Yu Liang1
1Department of Medicine Ultrasonics, Nanfang Hospital, Southern Medical University, Guangzhou, 510515, P. R. China.
Advanced science (Weinheim, Baden-Wurttemberg, Germany)
|October 2, 2025
概括
这项研究引入了一种新的纳米酶策略,使用铁铜金属有机框架 (Fe-Cu MOFs) 来抑制自,恢复抗瘤免疫力,并通过改善免疫识别和抑制转移来增强癌症免疫疗法.
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:
- 瘤免疫微环境 (TIME) 对瘤进展和治疗耐药性至关重要.
- 在 TIME 中的自抑制了通过减少MHC-I表达来抑制免疫监视,导致免疫逃逸.
- 目前的免疫疗法由于抑制时间和免疫逃避机制而面临局限性.
研究的目的:
- 开发一种基于纳米酶的新策略来调节自和恢复抗瘤免疫力.
- 设计铁铜金属有机框架 (Fe-Cu MOFs) 具有强大的氧化还原活性,用于自抑制.
- 创建一个多功能纳米平台,用于协同自阻塞和免疫微环境重编程.
主要方法:
- 具有可调节纳米酶活动的工程Fe-CuMOF (过氧化酶,谷氨过氧化酶,类似氧化酶).
- 确定了强烈的氧化还原活性和自抑制的最佳Fe:Cu比率.
- 开发了一种多功能纳米平台 (FCMP@CQ/PFH),通过将 (CQ) 和 (PFH) 联合加载到Fe-Cu MOF中.
- 利用超声波实时可视化治疗疗效.
主要成果:
- Fe-Cu MOF纳米酶选择性地损害了自和恢复了瘤细胞中的MHC-I表达,增强了免疫识别.
- FCMP@CQ/PFH纳米平台通过结合纳米酶驱动的氧化还原应激和溶酶抑制,协同抑制了自.
- 在体外和体外研究中,FCMP@CQ/PFH在癌症免疫疗法和抑制转移方面表现出增强的免疫疗法.
- 超声波成像提供了治疗结果的实时监测.
结论:
- 开发的基于纳米酶的策略有效地抑制了自和重编程瘤免疫微环境.
- 这种双重功能方法克服了免疫抵抗力,并推进了精确的癌症免疫疗法.
- 纳米酶疗法,自抑制和免疫调节的结合对癌症治疗具有显著的前景.
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