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  • Title: Effect of interferon on integrity of vaccinia virus and ribosomal RNA in infected cells.
    Author: Esteban M, Benavente J, Paez E.
    Journal: Virology; 1984 Apr 15; 134(1):40-51. PubMed ID: 6200994.
    Abstract:
    The state of vaccinia and ribosomal RNAs in IFN-treated, vaccinia virus-infected mouse L cells grown in suspension is examined. In these cells a drastic inhibition (approximately 90%) of both viral and cellular protein synthesis occurs after virus infection of IFN-treated cells. The findings show that (1) primary transcription of vaccinia virus is not impaired by IFN, but is rather enhanced; (2) viral RNAs produced in IFN-treated, infected cells are predominantly of the early class; (3) these viral RNAs can be translated in a cell-free protein-synthesizing system; (4) in IFN-treated, infected cells there is extensive cleavage of 28 and 18 S rRNA at early times post infection, resulting in a characteristic cleavage pattern; (5) cleavage of rRNA is viral RNA dependent. The results indicate that in this virus-cell system the IFN-mediated inhibition of vaccinia and cellular protein synthesis is correlated with an alteration in ribosomal integrity.
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