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Folic acid is often used for active targeting of tumor cells to enhance therapeutic outcomes. Here, folic acid was conjugated with chitosan and folate-conjugated chitosan-lipid hybrid nanoparticles were prepared by ionic gelation method using anionic lipid. These nanoparticles were in size range of 200 to 400 nm with spherical shape. In vitro drug release data suggested a sustained release of cisplatin. The therapeutic efficacy of the folate-conjugated hybrid nanoparticles was evaluated in SK-OV-3, A2780 and MCF-7 cancer cell lines. A significant increase in cytotoxicity was observed with folate targeted LPHNPs compared to non-targeted LPHNPs. Significantly enhanced cellular uptake and cell cycle arrest resulting from folate-targeted nanoparticles were confirmed using fluorescence microscopy and flow cytometry. The therapeutic efficacy and tumor penetration were further evaluated in 3D spheroid tumor models. These studies suggest that folate-conjugated lipid-chitosan nanoparticles could enhance therapeutic activity and may represent a promising platform for active targeting of tumor cells.
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| http://dx.doi.org/10.1016/j.nano.2020.102228 | DOI Listing |
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