期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 36, 页码 12624-12631出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201904751
关键词
catalysis; enzyme-like activity; nanozymes; photothermal therapy; tumor therapy
资金
- National Natural Science Foundation of China [21822802, 51772018, 51572271, 51825205, 21871279, 51672307, 51421002]
- National Basic Research Program of China [2016YFA0201500]
- Beijing Natural Science Foundation [2182078]
- Fundamental Research Funds for the Central Universities [XK1901, buctrc201915, XK1802-8]
- Fundamental Research Funds for the Central Universities and Research projects on biomedical transformation of ChinaJapan Friendship Hospital [PYBZ1825]
Nanozymes have attracted extensive interest owing to their high stability, low cost and easy preparation, especially in the field of cancer therapy. However, the relatively low catalytic activity of nanozymes in the tumor microenvironment (TME) has limited their applications. Herein, we report a novel nanozyme (PtFe@Fe3O4) with dual enzyme-like activities for highly efficient tumor catalytic therapy. PtFe@Fe3O4 shows the intrinsic photothermal effect as well as photo-enhanced peroxidase-like and catalase-like activities in the acidic TME, thereby effectively killing tumor cells and overcoming the tumor hypoxia. Importantly, a possible photo-enhanced synergistic catalytic mechanism of PtFe@Fe3O4 was first disclosed. We believe that this work will advance the development of nanozymes in tumor catalytic therapy.
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