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- W3113233986 abstract "pH sensitivity and stable micelles are necessary for targeted and sustainable anticancer drug delivery to reduce toxicity. Also, nanocarriers should show high drug loading efficiencies and good stability against biological environment. In this study, we designed pH sensitive, biocompatible and highly stable micelles from poly(N-vinylpyrrolidone)-block-poly(4-vinylpyridine) copolymer (PNVP-b-P4VP) for a low critical micelle concentration. Thus, we sequentially synthesized well-defined PNVP-b-P4VP by combination of reversible addition fragmentation chain transfer (RAFT) and atom transfer radical polymerization (ATRP) using a difunctional iniferter. The micelle formation and change of micellar behavior depending on pH in phosphate buffered saline (PBS) was investigated by dynamic light scattering (DLS), atomic force microscopy (AFM), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). Doxorubicin (DOX) loaded PNVP-b-P4VP micelles prepared by diffusion dialysis method showed a high drug loading efficiency, and good biocompatibility. They showed excellent pH-sensitive sustained drug release. In addition, the amount of released DOX was effectively regulated by controlling pH ranging from 6.9 to 3.5." @default.
- W3113233986 created "2020-12-21" @default.
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- W3113233986 date "2021-01-01" @default.
- W3113233986 modified "2023-10-09" @default.
- W3113233986 title "Control drug release behavior by highly stable and pH sensitive poly(N-vinylpyrrolidone)-block-poly(4-vinylpyridine) copolymer micelles" @default.
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- W3113233986 doi "https://doi.org/10.1016/j.polymer.2020.123329" @default.
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