Abstract
Artificial enzyme cascade systems with confinement effect are highly important in synthetic biology and biomedicine. Herein, a framework nucleic acid-based confined enzyme cascade (FNA-CEC) for synergistic cancer therapy in vivo was developed. The FNA-CEC consisted of glucose oxidase and horseradish peroxidase precisely assembled on an addressable DNA tetrahedron scaffold within few nanometers. Glucose oxidase (GOx) can trigger efficient glucose depletion for tumor starvation therapy, and increase the local concentration of H2O2in situ for enhanced downstream horseradish peroxidase (HRP)-activated prodrug therapy. Due to the spatial-confinement on DNA tetrahedron scaffold, the efficiency of intermediate metabolites transportation between the enzyme cascades was improved. Moreover, FNA-CEC was applied for efficient synergistic cancer therapy in vitro and in vivo. As a simple and efficient approach, the FNA-CEC is expected to expand the toolbox of technologies in synthetic biology and biomedicine.
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Acknowledgements
This work was supported by the National Natural Science Foundation of China (21705038, 21705043, 21890744, 21705037, 21521063), the National Key R&D Program of China (2019YFA0210100), Natural Science Foundation of Hunan Province (2018JJ3029, 2018JJ3092), China Postdoctoral Science Foundation (2020M672470), and the Open Funding Project of Shandong Key Laboratory of Biochemical Analysis (QUSTHX201808).
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Kong, G., Zhang, M., Xiong, M. et al. Framework nucleic acid-based confined enzyme cascade for efficient synergistic cancer therapy in vivo. Sci. China Chem. 64, 660–665 (2021). https://doi.org/10.1007/s11426-020-9927-9
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DOI: https://doi.org/10.1007/s11426-020-9927-9