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- W2321816604 abstract "Novel amphiphilic alternating polyesters, poly((N-phthaloyl-l-glutamic anhydride)-co-(2-(2-(2-methoxyethoxy)ethoxy)methyl)oxirane) (P(PGA-co-ME2MO)), were synthesized by alternating copolymerization of PGA and ME2MO. The structures of the synthesized polyesters were characterized by 1H NMR, 13C NMR, FT-IR, and GPC analyses. Because of the presence of oligo(ethylene glycol) (OEG) side chains, the polyesters could self-assemble into thermosensitive micelles. Dynamic light scattering (DLS) showed that these micelles underwent thermoinduced size decrease without intermicellar aggregation. In vitro methyl thiazolyl tetrazolium (MTT) assay demonstrated that the polyesters were biocompatible to Henrietta Lacks (HeLa) cells, rendering their potential for drug delivery applications. Two hydrophobic drugs, rifampin and doxorubicin (DOX), were loaded into the polyester micelles and observed to be released in a zero-order sustained manner. The sustained release could be accelerated in lower pH or in the presence of proteinase K, due to the degradation of the polyester under these conditions. Remarkably, in vitro cell experiments showed that the polyester micelles accomplished fast release of DOX inside cells and higher anticancer efficacy as compared with the free DOX. With enhanced stability during circulation condition and accelerated drug release at the target sites (e.g., low pH or enzyme presence), these novel polyesters with amphiphilic structures are promising to be used in sustained release drug delivery systems." @default.
- W2321816604 created "2016-06-24" @default.
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- W2321816604 date "2011-06-21" @default.
- W2321816604 modified "2023-10-17" @default.
- W2321816604 title "Synthesis of Amphiphilic Alternating Polyesters with Oligo(ethylene glycol) Side Chains and Potential Use for Sustained Release Drug Delivery" @default.
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- W2321816604 doi "https://doi.org/10.1021/bm200668n" @default.
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