Author:
Kimura Y,Yokochi T,Miyadai T,Yoshida K,Yokoo J,Matsumoto K
Abstract
A mutant cell line of porcine kidney cells that resists the cytopathic effect of influenza virus has been obtained and characterized. These cells, designated ESK-R, were originally obtained by prolonged cultivation of cells surviving influenza B/Kanagawa/73 virus infection. No infectious virus was recovered from ESK-R cells, and no evidence for the presence of virus antigens in the cells was demonstrated by immunofluorescent staining. ESK-R cells also showed a distinct resistance to various other strains of both types A and B influenza viruses. The growth of mumps, Sendai, or Newcastle disease virus was considerably restricted, but the cell line normally supported the replication of vesicular stomatitis virus. ESK-R cells were found to lack specific receptors for influenza virus as determined by fluorescence-activated cell sorter analyses. The membrane barrier of ESK-R cells was successfully overcome by nonspecific endocytosis of calcium-coprecipitated virus particles followed by production of an appreciable amount of progeny virus.
Publisher
American Society for Microbiology
Subject
Virology,Insect Science,Immunology,Microbiology
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