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 language | English |
|---|---|
| Pages (from-to) | 1747-1760 |
| Number of pages | 13 |
| Journal | Macromolecular Bioscience |
| Volume | 11 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 8 Dec 2011 |
Keywords
- Chitosan
- Clathrin
- Endocytosis
- Hyaluronic acid
- Nanoparticles