Theranostic verteporfin- loaded lipid-polymer liposome for photodynamic applications.

作者: Daphne Christine Salles de Oliveira , Camila Fabiano de Freitas , Italo Rodrigo Calori , Renato Sonchini Goncalves , Camila Aparecida Errerias Fernandes Cardinali

DOI: 10.1016/J.JPHOTOBIOL.2020.112039

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摘要: Abstract In this study we report a novel theranostic lipid-polymer liposome, obtained from DPPC and the triblock copolymer F127 covalently modified with 5(6)-carboxyfluorescein (CF) for photodynamic applications. Due to presence of F127, small unilamellar vesicle (SUV) liposomes were synthesized by simple fast thin-film hydration method without need an extrusion process. The vesicles have around 100 nm, low polydispersity superb solution stability. clinically used photosensitizer verteporfin (VP) was entrapped into vesicles, mostly in monomeric form, 90% loading efficiency. Stern-Volmer fluorescence lifetime assays showed heterogeneous distribution VP CF ensuring integrity their individual photophysical properties. properties entirely photoactivatable can be trigged unique wavelength (470 nm). feasibility system tested against Glioblastoma multiforme cell line T98G. Cellular uptake time-resolved microscopy monomerized (monoexponential decay, 6.0 ns) at nucleus level, while detected membrane microscopy. strategy's success supported reduction 98% viability T98G cells photoactivated liposome [VP] = 1.0 μmol L−1. Therefore, is potential use cancer ocular disease therapies.

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