期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 60, 期 36, 页码 19750-19758出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202106526
关键词
controlled release; desilylation; in vivo chemistry; micellar catalysis
资金
- Ministry of Science and Technology of the Peoples Republic of China [2017YFA0506300]
- Beijing Municipal Natural Science Foundation [Z200018]
- National Natural Science Foundation of China
- NSFC [U1867209, NSFC 21778003]
The strategy of accelerating cleavage reactions in tumors by locally inducing a catalyst in vivo shows promise, with the potential for micelles to act as both carriers and catalysts in controlled drug release. This approach can improve the selectivity and efficiency of drug activation in tumors.
The emerging strategies of accelerating the cleavage reaction in tumors through locally enriching the reactants is promising. Yet, the applications are limited due to the lack of the tumor-selectivity for most of the reactants. Here we explored an alternative approach to leverage the rate constant by locally inducing an in vivo catalyst. We found that the desilylation-induced cleavage chemistry could be catalyzed in vivo by cationic micelles, and accelerated over 1400-fold under physiological condition. This micelle-catalyzed controlled release platform is demonstrated by the release of a 6-hydroxyl-quinoline-2-benzothiazole derivative (HQB) in two cancer cell lines and a NIR dye in mouse tumor xenografts. Through intravenous injection of a pH-sensitive polymer micelles, we successfully applied this strategy to a prodrug activation of hydroxyl camptothecin (OH-CPT) in tumors. Its decaging efficiency is 42-fold to that without cationic micelles-mediated catalysis. This micelle-catalyzed desilylation strategy unveils the potential that micelle may act beyond a carrier but a catalyst for local perturbing or activation.
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