有缺陷的单位纳米酶与暴露的不和Cu-N2站点通过天生的免疫检查点阻塞进行抗瘤免疫疗法
Yang Liu1, Huan Zhao1, Rui Niu2
1School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, 637371, Singapore.
Journal of the American Chemical Society
|February 24, 2026
概括
这项研究引入了一种新型纳米酶,可以同时破坏瘤氧化还原平衡,并阻断MerTK介导的细胞分裂. 这种双重作用增强了先天和适应性抗瘤免疫力,具有强大的治疗效果.
科学领域:
- 生物医学工程 生物医学工程
- 免疫学 免疫学 免疫学
- 材料科学 材料科学 材料科学
背景情况:
- 瘤细胞的氧化还原平衡的破坏和阻断MerTK介导的血细胞分裂可以增强抗瘤免疫力.
- 开发用于联合免疫治疗的新策略对于有效的癌症治疗至关重要.
研究的目的:
- 开发一种单位纳米酶 (Ir@D-Cu-HITP-MMP) 用于抗瘤免疫疗法,通过结合MerTK抑制剂 (MRX-2843) 和Mn2+.
- 为了研究纳米酶阻断MerTK介导的细胞分裂和破坏瘤细胞氧化还原平衡以增强免疫反应的能力.
主要方法:
- 使用有缺陷的金属有机框架 (Cu-HITP) 基纳米酶 (Ir@D-Cu-HITP-MMP) 同时提供MRX-2843和Mn2+.
- 利用不和Cu-N2位点进行局部电子极化和反应性氧物种 (ROS) 生成.
- 在瘤微环境中触发MRX-2843的释放,以抑制巨细胞增生,并激活STING通路.
主要成果:
- 该纳米酶产生了ROS,破坏了瘤细胞的氧化还原平衡,线粒体功能和ATP生产.
- 释放MRX-2843抑制了乙细胞分裂,增加了瘤免疫性.
- 通过Mn2+和cGAMP运输对STING途径的协同激活导致了强大的免疫反应.
结论:
- 伊尔@D-Cu-HITP-MMP有效地激活先天和适应性免疫反应,以获得强大的抗瘤作用.
- 开发的纳米酶代表了通过先天性免疫检查点封锁的联合抗瘤免疫疗法的有前途战略.
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