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• W4367835043 abstract "The goal of the study was to estimate transfection efficacy and drug release in function of the PEG derivative in cationic liposomes and lipoplexes in both 2D and 3D in vitro models as well as in a mouse model (in vivo). For this purpose, cationic PEGylated nanocarriers based on OrnOrnGlu(C16 H33 )2 lipopeptides were fabricated and characterized. The nanocarriers were loaded with DNA plasmid pGL3 or with siRNA targeting 5'-UTR region of Hepatitis C virus, and their transfection efficacies were studied by luciferase test or by PCR technique, respectively. The pGL3-lipoplexes containing PEG derivative b (6 mol % PEG) were selected as the most promising nanocarriers for further in vivo study. In vitro cytotoxicity assay of the pGL3-lipoplexes with the PEG derivative b showed 2- and 1.5-fold enhancements of IC50 levels for HEK293T and HepG2 cells, respectively. Accumulation of the liposomes in the cells was studied by confocal microscopy using both 2D (monolayer culture) and 3D (multicellular spheroids) in vitro models. The PEGylated liposomes were found to penetrate cells more slowly than unmodified ones (without PEG). Thus, maximum liposomes in the HEK293T cells was observed after 1 and 3 h in the case of 2D and 3D in vitro models, respectively. Biodistribution study in mice showed that the PEGylated lipoplexes containing the PEG derivative b were eliminated from the bloodstream more slowly, namely with the doubled half-life time, than unmodified ones. Thus, the enhanced transfection efficacy and prolonged drug release of the PEGylated lipoplexes containing the optimal PEG derivative was demonstrated. This approach could be promising for development of novel siRNA-based drugs." @default.
• W4367835043 created "2023-05-04" @default.
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• W4367835043 date "2023-05-03" @default.
• W4367835043 modified "2023-10-01" @default.
• W4367835043 title "Transfection efficacy and drug release depends upon the <scp>PEG</scp> derivative in cationic lipoplexes: Evaluation in <scp>3D</scp> in vitro model and in vivo" @default.
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• W4367835043 doi "https://doi.org/10.1002/jbm.b.35259" @default.
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• W4367835043 hasPublicationYear "2023" @default.
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