Internalization of liposomal nanocontainers conjugated with monoclonal antibodies to VEGF, VEGFR2 (KDR), and proteins overproduced in the tumor tissue was studied in vitro on cultures of poorly differentiated tumor cells. Comparative analysis of accumulation of vectored liposomes in the tumor cells was performed by evaluating co-localization of labeled containers and cell organelles by laser scanning confocal microscopy. We observed nearly 2 times more active penetration and accumulation of liposomes vectored with antibodies in the tumor cells in comparison with non-vectored liposomes. Selective clathrin-dependent penetration of vectored liposomes into tumor cells was demonstrated by using pharmacological agents inhibiting endocytosis.
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Translated from Kletochnye Tekhnologii v Biologii i Meditsine, No. 2, pp. 115-121, April, 2016
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Mel’nikov, P.A., Baklaushev, V.P., Gabashvili, A.N. et al. Internalization of Vectored Liposomes in a Culture of Poorly Differentiated Tumor Cells. Bull Exp Biol Med 161, 593–599 (2016). https://doi.org/10.1007/s10517-016-3466-3
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DOI: https://doi.org/10.1007/s10517-016-3466-3