title: In vitro biological activities of Escherichia coli-derived bovine interferons-alpha, -beta, and -gamma.
abstract: The infectious yields of several bovine viruses were inhibited in bovine cells treated with purified preparations of E. coli-derived bovine interferons (BoIFNs)-alpha, -beta, and -gamma. BoIFN-beta 2, encoded by one member of the BoIFN-multigene family, had more potent antiviral and antiproliferative activities than the product of one member of the class-I IFN-alpha gene family (BoIFN-alpha I1). BoIFN-beta 2 also completed more effectively than BoIFN-alpha I1 with HuIFN-alpha I2 for cell-surface receptors on bovine cells. Despite these differences, the kinetics of maximal antiviral activity were similar for BoIFN-alpha I1, BoIFN-beta 2, and HuIFN-alpha I2. In comparison to BoIFN-alpha I1 and BoIFN-beta 2, BoIFN-gamma had the least in vitro antiviral activity and required the longest contact with cells to achieve maximal protection against virus infection, but had a dramatically greater antiproliferative activity.
mesh_terms: D000818:Animals; D001667:Binding, Competitive; D002417:Cattle; D002455:Cell Division / Q000187:drug effects; D002460:Cell Line; D004926:Escherichia coli / Q000378:metabolism*; D006801:Humans; D007370:Interferon Type I / Q000096:biosynthesis / Q000494:pharmacology*; D007371:Interferon-gamma / Q000096:biosynthesis / Q000494:pharmacology*; D007700:Kinetics; D011971:Receptors, Immunologic / Q000378:metabolism; D017471:Receptors, Interferon; D011994:Recombinant Proteins / Q000494:pharmacology; D014762:Viral Interference; D014779:Virus Replication / Q000187:drug effects; D014780:Viruses / Q000187:drug effects
chemical_list: D007370:Interferon Type I; D011971:Receptors, Immunologic; D017471:Receptors, Interferon; D011994:Recombinant Proteins; D007371:Interferon-gamma