Cellular uptake and cell-to-cell transfer of polyelectrolyte microcapsules within a triple co-culture system representing parts of the respiratory tract
Kuhn, Dagmar A.Adolphe Merkle Institute, Université de Fribourg, Switzerland
Hartmann, RaimoDepartment of Physics, Philipps Universität Marburg, Marburg, Germany
Fytianos, KleanthisAdolphe Merkle Institute, Université de Fribourg, Switzerland
Petri-Fink, AlkeAdolphe Merkle Institute, Université de Fribourg, Switzerland - Chemistry Department, University of Fribourg, Switzerland
Science and Technology of Advanced Materials. - 2015, vol. 16, no. 3, p. 034608
English
Polyelectrolyte multilayer microcapsules around 3.4 micrometers in diameter were added to epithelial cells, monocyte-derived macrophages, and dendritic cells in vitro and their uptake kinetics were quantified. All three cell types were combined in a triple co-culture model, mimicking the human epithelial alveolar barrier. Hereby, macrophages were separated in a three-dimensional model from dendritic cells by a monolayer of epithelial cells. While passing of small nanoparticles has been demonstrated from macrophages to dendritic cells across the epithelial barrier in previous studies, for the micrometer-sized capsules, this process could not be observed in a significant amount. Thus, this barrier is a limiting factor for cell-to-cell transfer of micrometer-sized particles.