Inhibition of reovirus by mycophenolic acid is associated with the M1 genome segment.

Abstract:

:Mycophenolic acid (MPA), an inhibitor of IMP dehydrogenase, inhibits reovirus replication and viral RNA and protein production. In mouse L929 cells, antiviral effects were greatest at 30 microg of MPA/ml. At this dosage, MPA inhibited replication of reovirus strain T3D more than 1,000-fold and inhibited replication of reovirus strain T1L nearly 100-fold, compared to non-drug-treated controls. Genetic reassortant analysis indicated the primary determinant of strain-specific differences in sensitivity to MPA mapped to the viral M1 genome segment, which encodes the minor core protein mu2. MPA also inhibited replication of both strains of reovirus in a variety of other cell lines, including Vero monkey kidney and U373 human astrocytoma cells. Addition of exogenous guanosine to MPA-treated reovirus-infected cells restored viral replicative capacity to nearly normal levels. These results suggest the mu2 protein is involved in the uptake and processing of GTP in viral transcription in infected cells and strengthens the evidence that the mu2 protein can function as an NTPase and is likely a transcriptase cofactor.

journal_name

J Virol

journal_title

Journal of virology

authors

Hermann LL,Coombs KM

doi

10.1128/JVI.78.12.6171-6179.2004

subject

Has Abstract

pub_date

2004-06-01 00:00:00

pages

6171-9

issue

12

eissn

0022-538X

issn

1098-5514

pii

78/12/6171

journal_volume

78

pub_type

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