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Dual-responsive Gemini Micelles for Efficient Delivery of Anticancer Therapeutics.

ABSTRACT: Polymeric micelles as drug delivery vehicles are popular owing to several advantages. In this study, a gemini amphiphile (gemini mPEG-Cys-PMT) consisting of hydrophilic poly(ethylene glycol) and hydrophobic poly(methionine) with cystine disulfide spacer was synthesized and its micellar properties for thiol- or reactive oxygen species (ROS)-dependent intracellular drug delivery were described. The cleavage of cystine linkage in a redox environment or the oxidation of methionine units in a ROS environment caused the destabilization of micelles. Such redox- or ROS-triggered micellar destabilization led to enhanced release of encapsulated doxorubicin (DOX) to induce cytotoxicity against cancer cells. Further, the therapeutic effects of the DOX-loaded micelles were demonstrated using the KB cell line. This study shows that thiol and ROS dual-responsive gemini micelles are promising platforms for nano-drug delivery in various cancer therapies.

SUBMITTER: Choi YI

PROVIDER: S-EPMC6523983 | biostudies-literature | 2019 Apr

REPOSITORIES: biostudies-literature

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Dual-responsive Gemini Micelles for Efficient Delivery of Anticancer Therapeutics.

Choi Young In YI Choi Eun-Sook ES Mun Kwan Ho KH Lee Se Guen SG Lee Sung Jun SJ Jeong Sang Won SW Lee Seung Woo SW Kim Hyun-Chul HC

Polymers 20190402 4

Polymeric micelles as drug delivery vehicles are popular owing to several advantages. In this study, a gemini amphiphile (gemini mPEG-Cys-PMT) consisting of hydrophilic poly(ethylene glycol) and hydrophobic poly(methionine) with cystine disulfide spacer was synthesized and its micellar properties for thiol- or reactive oxygen species (ROS)-dependent intracellular drug delivery were described. The cleavage of cystine linkage in a redox environment or the oxidation of methionine units in a ROS env ...[more]

PMID: 30960588

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