波谱学杂志

• •    

MRI示踪的纳米酶用于级联反应增强的免疫治疗

隋美菊1,2,张磊1,2,王瑞芳1,2,骆盈盈1,李莎1,丘茂松1,徐秋怡1,2,陈代钦1,2,陈世桢1,2,3*,周欣1,2,3   

  1. 1. 中国科学院精密测量科学与技术创新研究院,磁共振波谱与成像全国重点实验室,武汉磁共振中心,湖北 武汉 430071;2. 中国科学院大学,北京 100049;3. 海南大学,生物医学工程学院,海南 三亚 572019
  • 收稿日期:2025-03-14 修回日期:2025-05-04 出版日期:2025-05-06 在线发表日期:2025-05-06
  • 通讯作者: 陈世桢 E-mail:chenshizhen@apm.ac.cn

MRI-traceable Nanoenzyme for Cascade Catalysis-enhanced Immunotherapy

SUI Meiju1,2,ZHANG Lei1,2,WANG Ruifang1,2,LUO Yingying1,LI Sha1,QIU Maosong1,XU Qiuyi1,2,CHEN Daiqin1,2,CHEN Shizhen1,2,3*,ZHOU Xin1,2,3   

  1. 1. State Key Laboratory of Magnetic Resonance Spectroscopy and Imaging, National Center for Magnetic Resonance in Wuhan, Innovation Academy for Precision Measurement Science and Technology, Chinese Academy of Sciences, Wuhan 430071, China; 2. University of Chinese Academy of Sciences, Beijing 100049, China; 3. School of Biomedical Engineering, Hainan University, Sanya 572019, China
  • Received:2025-03-14 Revised:2025-05-04 Published:2025-05-06 Online:2025-05-06
  • Contact: CHEN Shizhen E-mail:chenshizhen@apm.ac.cn

摘要: 免疫抑制性肿瘤微环境(ITME)对抗肿瘤免疫治疗构成了重大障碍.为应对这一挑战,本研究基于Mn2+和内源性血红素制备了一种新型纳米酶,其具有多重类酶催化活性,可有效逆转ITME并激活抗肿瘤免疫应答,从而协同增强αPD-L1对肿瘤生长和转移的抑制作用.同时,该纳米酶兼具磁共振成像功能,可实现对肿瘤及纳米酶分布的可视化追踪.

关键词: 磁共振成像, 免疫治疗, 血红素, 铁死亡, 光热治疗

Abstract: The immunosuppressive tumor microenvironment (ITME) poses a significant challenge to anti-tumor immunotherapy. Our research develops a novel nanoenzyme based on Mn2+ and endogenous hemin. The nanozyme possesses superior multi-enzymatic activities, which could significantly reverse the ITME and trigger a vigorous anti-tumor immune response, thereby inhibiting both tumor growth and metastasis when used in conjunction with αPD-L1. Moreover, it functions as a magnetic resonance imaging (MRI) contrast agent for the visualization of tumors and the trace of the nanoenzyme.