Protein Synthesis in HeLa Cells Double-infected with Encephalomyocarditis Virus and Poliovirus
- 1 July 1982
- journal article
- research article
- Published by Microbiology Society in Journal of General Virology
- Vol. 61 (1), 15-24
- https://doi.org/10.1099/0022-1317-61-1-15
Abstract
Summary The pattern of host, encephalomyocarditis (EMC) virus and poliovirus protein synthesis in HeLa cells double-infected with EMC virus and poliovirus has been examined. Both picornaviruses were able to block host translation after infection, although with different degrees of efficiency. In co-infection experiments, the inhibition of poliovirus protein synthesis by EMC virus and vice versa depended on the relative multiplicities of infection of each virus used. Under some conditions, double-infected HeLa cells simultaneously synthesized poliovirus and EMC virus proteins. In superinfection experiments, when the two viruses were added at different times, the pattern of the proteins synthesized depended on the time of addition of the second virus challenge. Poliovirus did not replicate when added 4 h after EMC virus. On the other hand, EMC virus replication was inhibited in cells preinfected with poliovirus. If co-infected cells were treated with guanidine from the beginning of the infection, only the synthesis of EMC virus proteins was apparent. However, if poliovirus was allowed to replicate for 4 h before guanidine addition, then the synthesis of EMC virus proteins was reduced, even though the translation of poliovirus mRNA was very much inhibited. EMC virus-infected HeLa cells exclusively synthesized cellular proteins in hypotonic media, whereas under hypertonic conditions only virus protein synthesis took place. In poliovirus-infected HeLa cells no cellular translation was detected under all ionic conditions tested. The ionic optimum of EMC virus and poliovirus protein synthesis was also different in cells infected with a single virus. However, in double-infected cells the monovalent ion optimum for translation of EMC virus and poliovirus mRNA was the same, although EMC virus protein synthesis was more resistant to inhibition by hypertonic media. No cellular protein synthesis was detected in double-infected HeLA cells under all the ionic conditions tested.This publication has 11 references indexed in Scilit:
- Protein Synthesis and Membrane Integrity in Interferon-treated HeLa Cells Infected with Encephalomyocarditis VirusJournal of General Virology, 1981
- Encephalomyocarditis Viral RNA Can Be Translated Under Conditions of Poliovirus-Induced Translation Shutoff In VivoJournal of Virology, 1981
- Reversion by hypotonic medium of the shutoff of protein synthesis induced by encephalomyocarditis virusJournal of Virology, 1981
- The Influence of the Host Cell on the Inhibition of Virus Protein Synthesis in Cells Doubly Infected with Vesicular Stomatitis Virus and MengovirusJournal of General Virology, 1980
- Shutoff of HeLa cell protein synthesis by encephalomyocarditis virus and poliovirus: a comparative studyJournal of Virology, 1980
- Purification of a factor that restores translation of vesicular stomatitis virus mRNA in extracts from poliovirus-infected HeLa cells.Proceedings of the National Academy of Sciences of the United States of America, 1980
- Alterations in initiation factor activity from poliovirus-infected HeLa cells.Journal of Biological Chemistry, 1979
- Inhibition of translation by poliovirus: inactivation of a specific initiation factor.Proceedings of the National Academy of Sciences of the United States of America, 1978
- Control of protein synthesis in extracts from poliovirus-infected cells. I. mRNA discrimination by crude initiation factorsJournal of Virology, 1978
- Interference between enteroviruses and conditions effecting its reversalVirology, 1964