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American Journal of Pathology, Vol 103, 271-282, Copyright © 1981 by American Society for Investigative Pathology

REGULAR ARTICLES

Migration into an in vitro experimental wound: a comparison of porcine aortic endothelial and smooth muscle cells and the effect of culture irradiation

AI Gotlieb and W Spector

The purpose of this study was to compare the group-cell migration characteristics of endothelial cells (ECs) and smooth muscle cells (SMCs) derived from the same source, the porcine thoracic aorta, as they moved into an experimental in vitro wound. The authors characterized migration by measuring two aspects of the migrating cells: the number of free cells in the wound and the distance of migration of the sheet of cells at the wound edge. The quantitative data showed that ECs migrated into the wound as a sheet of cells, while SMCs migrated as free single cells. In addition, since irradiated cells have been used to study cell migration and since the irradiated cells do undergo some shape changes, the distribution of the cytoskeletal microfilament fibres was compared in migrating irradiated and nonirradiated cells in order to see whether this feature of cell migration was different. Irradiated and nonirradiated migrating ECs showed a strikingly different pattern in the orientation of microfilament bundles when studied by immunofluorescence microscopy with antiserums to myosin and tropomyosin.

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