Abstract
In vitro studies related to various viral pathogenesis in swine have been hampered by the lack of relevant porcine cell lines. The susceptibility to porcine rotavirus infection was evaluated by using a newly established porcine intestinal epithelial cell line. Immunohistochemical staining for cytokeratin confirmed that the cultured cells were epithelial cells. Measurement of cell viability and detection of infected cells confirmed that these epithelial cells were susceptible to porcine rotavirus infection. This study describes the cytopathic changes in cultured porcine intestinal epithelial cells during virus invasion. Following infection with porcine rotavirus, the cell cultures contained viral protein at 16h post-infection as detected by direct immunofluorescence. The epithelial cell cultures provided competent target cells for studying host cell responses to porcine rotavirus and a homologous system for investigating the response of intestinal epithelial cells during viral infection.
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