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https://www.selleckchem.com/products/imdk.html A drastic decrease in cell coverage as well as rounding up of cells during the first 5 h of exposure to OxPt-loaded (MMP)-sensitive liposome formulation is reflected by the first negative EIS response, which indicates the onset of liposome endocytosis. Graphical abstract.A new straightforward gel permeation chromatography (GPC) method was developed to calculate the drug encapsulation efficiency and loading content of Poly(lactic acid) nanoparticles (PLA NPs) loaded with Salinomycin (Sal), exploiting the capability of this technique to separate a macromolecular/molecular mixture on the basis of the molecular weight of each component. The proposed GPC method allowed Sal detection until 1% of Sal content in PLA NPs, avoiding sample pre-treatments. The method was validated by wave voltammetry (SW) technique, using a slightly modified literature procedure, useful to detect Sal in the concentration range 0.4 ≤ C/μmol/L ≤ 12 (linear concentration range). PLA-based NPs were prepared by nanoprecipitation with either native and functionalized PLA. Specifically, folate-decorated PLA NPs (PLA-FA NPs) were obtained by CuAAC click functionalization of alkyne-grafted PLA with azide-folate. Sal-loaded NPs were characterized physicochemically and morphologically. They exhibited adequate physicochemical properties, good drug encapsulation efficiency (98 ± 0.5% and 99 ± 0.5%), and loading content (8.8 ± 0.1% and 8.9 ± 0.1% for PLA/Sal and PLA-FA/Sal NPs, respectively). The size of empty PLA NPs resulted smaller (90 ± 3.2 nm and 680 ± 15.3 nm, for PLA NPs and PLA-FA NPs respectively) than the correspondent drug-loaded NPs (110 ± 3.8 nm and 875 ± 20.5 nm, respectively). Their biological activity was assessed on osteosarcoma bulk cells MG63, healthy osteoblast cell line (hFOB1.19), and enriched osteosarcoma cancer stem cells (CSCs), showing cell-depending effect. Entrapped Sal maintained its cytotoxic effect on CSCs and MG63 cells, with a po

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