Authors: Deborah S Goldberg Hamidreza Ghandehari Peter W Swaan
Publish Date: 2010/04/22
Volume: 27, Issue: 8, Pages: 1547-1557
Abstract
Dendrimer cellular uptake was found to be dynamindependent and was reduced by both clathrin and caveolin endocytosis inhibitors while transepithelial transport was only dependent on dynamin and clathrinmediated endocytosis Dendrimers were quickly trafficked to the lysosomes after 15 min of incubation and showed increased endosomal accumulation at later time points suggesting saturation of this pathway Dendrimers were unable to open tight junctions in cell monolayers treated with dynasore a selective inhibitor of dynamin confirming that dendrimer internalization promotes tight junction modulationG35 PAMAM dendrimers take advantage of several receptormediated endocytosis pathways for cellular entry in Caco2 cells Dendrimer internalization by dynamindependent mechanisms promotes tight junction opening suggesting that dendrimers act on intracellular cytoskeletal proteins to modulate tight junctions thus catalyzing their own transport via the paracellular route
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