Abstract
Bioorthogonal chemistry provides a new avenue for disease treatment by generating therapeutic agents in situ. However, two crucial issues have to be considered for future practical applications. One is the prevention of metabolic inactivation of the in situ-synthesized drug molecules. The other is enhancing the biocompatibility and tumour cell selectivity of the bioorthogonal catalyst. Here, to tackle the above issues, we design a biocompatible hydrogen-bonded organic framework-based dual prodrugs activation platform (namely Apt@E-F@PHOF-1). The ferric porphyrin ligands of hydrogen-bonded organic framework-based bioorthogonal pre-catalyst are reduced to ferrous porphyrin by the abundant glutathione in tumour, which then catalyses the cleavage reaction to synthesize 5-fluorouracil (5FU) and 5-ethynyluracil. The 5FU catabolic enzyme inhibitor 5-ethynyluracil prevents 5FU metabolic inactivation. As an example of hydrogen-bonded organic framework-based bioorthogonal prodrug activation, this work provides insights into prevention of drug inactivation by using bioorthogonal chemistry, thus enhancing tumour inhibition and reducing therapeutic side effects demonstrated by both in vitro and orthotopic metastatic mouse model experiments.
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Data availability
Crystallographic data for the structures reported in this paper have been deposited at the Cambridge Crystallographic Data Centre, under deposition numbers CCDC 2231664. Copies of the data can be obtained free of charge via https://www.ccdc.cam.ac.uk/structures/. The data that support the findings of this study are presented in the text and Supplementary Information. Source data are provided with this paper. All other data that support the findings reported herein are available on reasonable request from the corresponding author.
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Acknowledgements
This work was supported by the National Key R&D Program of China (2022YFA1205804; 2021YFF1200700, J.R.), the National Nature Science Foundation of China (21820102009, X.Q.; 91856205, X.Q.; 22237006, J.R.; 22122704, C.Z.), the Key Program of Frontier of Sciences (CAS QYZDJ-SSW-SLH052, X.Q.) and the Jilin Innovation Project (2023DJ02). We thank Figdraw for providing materials for the graphics.
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X.Q. and J.R. designed research; C.H., C.Z. and Q.D. performed research and analysed data; H.Z. and D.Y. analysed data; C.H., C.Z. and X.Q. wrote the paper.
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Supplementary Methods, Tables 1–6, Note 1 and Figs. 1–46.
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The single-crystal structure of PHOF-1.
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Huang, C., Zhao, C., Deng, Q. et al. Hydrogen-bonded organic framework-based bioorthogonal catalysis prevents drug metabolic inactivation. Nat Catal 6, 729–739 (2023). https://doi.org/10.1038/s41929-023-00999-0
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DOI: https://doi.org/10.1038/s41929-023-00999-0