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- W2017405812 abstract "Cellular specific micellar systems from functional amphiphilic block copolymers are attractive for targeted intracellular drug delivery. In this study, we developed reactive micelles based on diblock copolymer of poly(ethyl ethylene phosphate) and poly(ɛ-caprolactone). The micelles were further surface conjugated with galactosamine to target asialoglycoprotein receptor (ASGP-R) of HepG2 cells. The size of micellar nanoparticles was about 70nm in diameter, and nanoparticles were negatively charged in aqueous solution. Through recognition between galactose ligands with ASGP-R of HepG2 cells, cell surface binding and internalization of galactosamine-conjugated micelles were significantly promoted, which were demonstrated by flow cytometric analyses using rhodamine 123 fluorescent dye. Paclitaxel-loaded micelles with galactose ligands exhibited comparable activity to free paclitaxel in inhibiting HepG2 cell proliferation, in contrast to the poor inhibition activity of micelles without galactose ligands particularly at lower paclitaxel doses. In addition, population of HepG2 cells arrested in G2/M phase was in positive response to paclitaxel dose when cells were incubated with paclitaxel-loaded micelles with galactosamine conjugation, which was against the performance of micelles without galactose ligand, owing to the ligand–receptor interaction. The surface functionalized micellar system is promising for specific anticancer drug transportation and intracellular drug release." @default.
- W2017405812 created "2016-06-24" @default.
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- W2017405812 date "2008-05-01" @default.
- W2017405812 modified "2023-09-30" @default.
- W2017405812 title "Functionalized micelles from block copolymer of polyphosphoester and poly(ɛ-caprolactone) for receptor-mediated drug delivery" @default.
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- W2017405812 doi "https://doi.org/10.1016/j.jconrel.2008.01.021" @default.
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