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- W4306147359 abstract "Doxorubicin (DOX)-loaded polymer nanoparticles based on poly(ethylene glycol)-poly(ε-caprolactone) copolymers with a complex macromolecular topology are proposed to tackle the matrix metalloproteinase (MMP)-rich tumor environment. Linear, 4-arm comb-like copolymers and 4-arm brush block copolymers were synthesized through a combination of ring opening polymerization and atom transfer radical polymerization, in order to control the molar mass distribution, the arm/brush architecture, as well as the final size and DOX loading of self-assembled nanoparticles obtained by nanoprecipitation. The optimized nanocarriers were conjugated with penetrating low molecular weight protamine peptides coupled to a polyanionic inhibitory domain cleavable by matrix metalloproteinase-2 (MMP2). DOX-loaded, MMP2-activable nanocarriers were evaluated in the context of glioblastoma (GBM), a brain tumor characterized by remarkable and relevant MMP2 expression. Uptake and cytotoxicity in patient-derived GBM cells correlated with the level of MMP2 enzymatic activity in a dose- and time-dependent manner. No effects were observed in nontumoral endothelial cells that do not express MMP2. Results demonstrated that, by tuning polymer topology and peptide sequence, nanoparticle self-assembly, DOX encapsulation, and delivery can be optimized for the development of an advanced treatment for MMP2-overexpressing tumors." @default.
- W4306147359 created "2022-10-14" @default.
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- W4306147359 date "2022-10-13" @default.
- W4306147359 modified "2023-09-26" @default.
- W4306147359 title "Functional Poly(ε-caprolactone)/Poly(ethylene glycol) Copolymers with Complex Topologies for Doxorubicin Delivery to a Proteinase-Rich Tumor Environment" @default.
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- W4306147359 doi "https://doi.org/10.1021/acsapm.2c00897" @default.
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