Abstract
Interactions of macrophages with epithelium represent one of the pathways involved in regulating local immune mechanisms. We studied the effect of cell–cell contact with an epithelial monolayer on the phenotype of macrophages. Human monocytes and THP-1 macrophages were co-cultured with monolayers of human bronchial epithelial cells (HBECs), the alveolar type II-like cell line A549, renal adenocarcinoma epithelial cells (RA), and the lung fibroblast strain HFL-1. The expression of CD11b, CD14, CD54, and HLA-DR was measured by immunocytochemistry and flow cytometry and showed epithelial cell induction of CD54 and HLA-DR in monocytes and of all antigens in THP-1 cells. Co-culture with fibroblasts did not change the phenotype of macrophages. Separation by a filter insert inhibited most of the effects. Culture supernatants did not induce prominent phenotypic changes. Cell–cell contacts with epithelium appear to be of importance in regulating the phenotype of macrophages.
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Stříž, I., Slavčev, A., Kalanin, J. et al. Cell–Cell Contacts with Epithelial Cells Modulate the Phenotype of Human Macrophages. Inflammation 25, 241–246 (2001). https://doi.org/10.1023/A:1010975804179
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DOI: https://doi.org/10.1023/A:1010975804179