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- W2777459838 abstract "The targeted delivery of hydrophobic therapeutic drugs to tumors is one of the major challenges in drug development. The use of natural proteins as drug delivery vehicles holds great promise due to various functionalities of proteins. In the current study, we exploited a natural protein, GroEL, which possesses a double layer cage structure, as a hydrophobic drug container, which is switchable by ATP binding to a hydrophilic status, to design a novel and intelligent hydrophobic drug delivery molecular machine with a controlled drug release profile. When loaded with the hydrophobic antitumor drug, Doxorubicin (Dox), GroEL was able to shield the drug from the aqueous phase of blood, releasing the drug once in the presence of a critical concentration of ATP at the tumor site. Unexpectedly, we found that GroEL has a specific affinity for the cell structural protein, plectin, which is expressed at abnormally elevated levels on the membranes of tumor cells but not in normal cells. This finding, in combination with the ATP sensitivity, makes GroEL a superior natural tumor targeting nanocarrier. Our data show that GroEL-Dox is able to effectively, and highly selectively, deliver the hydrophobic drug to fast growing tumors without overt adverse effects on the major organs. GroEL is therefore a promising drug delivery platform that can overcome the obstacles to hydrophobic drug targeting and delivery." @default.
- W2777459838 created "2018-01-05" @default.
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- W2777459838 date "2018-01-09" @default.
- W2777459838 modified "2023-10-17" @default.
- W2777459838 title "Chaperonin-GroEL as a Smart Hydrophobic Drug Delivery and Tumor Targeting Molecular Machine for Tumor Therapy" @default.
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- W2777459838 doi "https://doi.org/10.1021/acs.nanolett.7b04307" @default.
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