Abstract
Multifunctional nanoplatforms for the early diagnosis and treatment of deep-seated tumors with high specificity are particularly desirable but face many challenges. Herein, nanoplatforms containing copper/manganese chalcogenide nanoflowers (CMC NFs) and 19F probes have been developed, which exhibit enhanced therapeutic efficiency and activatable 19F magnetic resonance imaging (MRI) capability within a tumor microenvironment (TME). CMC NFs containing synergistic redox pairs (Cuox/Cured, Mnox/Mnred) and rich defects acted as integrated cascade enzyme mimics to effectively destroy the redox homeostasis of tumors via generation of reactive oxygen species (ROS) and GSH depletion. In addition, the 19F MRI signal could be switched on by attenuation of the paramagnetic relaxation enhancement (PRE) effect under TME conditions, affording a TME-activatable 19F MRI-guided tumor-specific chemodynamic therapeutic. These nanoplatforms could simultaneously boost therapeutic efficacy and regulate signal output, exhibiting significant potential for in vivo drug tracking and deep-seated tumor diagnosis and treatment.
Original language | English |
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Pages (from-to) | 2498-2513 |
Number of pages | 16 |
Journal | Chem |
Volume | 8 |
Issue number | 9 |
Early online date | 14 Jul 2022 |
DOIs | |
Publication status | Published - 8 Sept 2022 |
Bibliographical note
Funding Information:The authors gratefully acknowledge financial support from the National Natural Science Foundation of China ( 21725501 and 21874007 ) and the Beijing Municipal Natural Science Foundation ( 2212011 ). T.D.J. wishes to thank the Royal Society for a Wolfson Research Merit Award and the Open Research Fund of the School of Chemistry and Chemical Engineering, Henan Normal University for support ( 2020ZD01 ).
Data and code availability
The authors declare that the data supporting the findings of this study are available within the article and its Supplemental information. Extra data are available from the corresponding author upon reasonable request.
Keywords
- F magnetic resonance imaging
- activatable probe
- chemodynamic therapy
- defects
- nanozyme
- paramagnetic relaxation enhancement effect
- photothermal therapy
- SDG3: Good health and well-being
- tumor microenvironment
ASJC Scopus subject areas
- General Chemistry
- Biochemistry
- Environmental Chemistry
- General Chemical Engineering
- Biochemistry, medical
- Materials Chemistry
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