@article{mbs:/content/journal/jgv/10.1099/0022-1317-73-9-2299, author = "Monahan, Steven J. and Simon, Edward", title = "Dissociable antiviral activities directed against cardioviruses are expressed in L cells treated with interferon", journal= "Journal of General Virology", year = "1992", volume = "73", number = "9", pages = "2299-2303", doi = "https://doi.org/10.1099/0022-1317-73-9-2299", url = "https://www.microbiologyresearch.org/content/journal/jgv/10.1099/0022-1317-73-9-2299", publisher = "Microbiology Society", issn = "1465-2099", type = "Journal Article", abstract = "Interferon (IFN) restricts a wide variety of viruses. To do so it elicits many antiviral pathways. For example, subclones of the same cell line with a reduced antiviral spectrum are thought to lack one or more antiviral pathways. Our line of L cells exhibits two distinct antiviral activities. The first delays the yield of both wild-type mengovirus (is +) and an IFN-sensitive mutant (is-1). The second specifically inhibits is-1 virus yields 100-fold. From these cells, a subclone was isolated which had lost the second antiviral activity (i.e. in these cells is-1 virus acts like is + virus). To see whether other cardioviruses are sensitive to these activities, two additional strains [m-mengovirus and encephalomyocarditis-R (EMC-R) virus] were tested in our subclones. Like is + virus, m-mengovirus yields were delayed by IFN in both subclones; EMC-R virus behaved like is-1 virus in both cell lines. When actinomycin D was added at the time of infection, is-1 virus was phenotypically reversed to is + virus, but EMC-R virus was still inhibited. The 2-5A synthetase/RNase L pathway is expressed in both clones. Therefore, at least three antiviral activities against cardioviruses can be distinguished in IFN-treated L cells, and two of them appear not to involve the 2-5A synthetase/RNase L pathway.", }