Nanocarriers for cytoplasmic delivery: Cellular uptake and intracellular fate of chitosan and hyaluronic acid-coated chitosan nanoparticles in a phagocytic cell model

Noha M. Zaki, Alessandro Nasti, Nicola Tirelli

    Research output: Contribution to journalArticlepeer-review

    Abstract

    The cellular uptake of hyaluronic-acid-coated, negatively charged chitosan/triphosphate nanoparticles and that of uncoated, positively charged ones is investigated by studying cellular localization, uptake kinetics and mechanism of internalization in J774.2 macrophages, using non-phagocytic L929 fibroblasts as a control for uncoated nanoparticles. Both kinds of nanoparticles undergo endosomal escape and adopt a similar clathrin-based endocytic mechanism. The surface decoration with HA profoundly influences the kinetics of cellular uptake, with an at least two orders of magnitude slower kinetics, but also the nature of the binding on the cellular surface. © 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
    Original languageEnglish
    Pages (from-to)1747-1760
    Number of pages13
    JournalMacromolecular Bioscience
    Volume11
    Issue number12
    DOIs
    Publication statusPublished - 8 Dec 2011

    Keywords

    • Chitosan
    • Clathrin
    • Endocytosis
    • Hyaluronic acid
    • Nanoparticles

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