PMID: 7941701Jul 1, 1994Paper

Transinhibition of herpes simplex virus replication by an inducible cell-resident gene encoding a dysfunctional VP19c capsid protein

Virus Research
S I Chowdhury, W Batterson

Abstract

This study demonstrates that cells expressing a dysfunctional analog of a herpes simplex virus (HSV) capsid protein inhibits HSV replication. Vero cell lines expressing HSV-1 capsid protein VP19c/beta-galactosidase fusion proteins were constructed and tested for their kinetics of expression, intracellular location, and ability to interfere with HSV replication. Two chimeric genes were constructed for these studies. The larger chimeric gene encodes the amino terminal 327 amino acids (aa) of VP19c fused to the carboxy terminal 1026 aa of beta-galactosidase, and the shorter chimeric gene encodes VP19c aa 1-30 and 302-327 fused to the carboxy-terminal 1026 aa of beta-galactosidase. Cell lines V32G-1 and V32G-2 containing the larger and the shorter chimeric genes, respectively, were isolated after cotransfection with plasmid pSV2-neo DNA, cell selection, and limiting-dilution cloning. The chimeric VP19c/beta-galactosidase genes resident in V32G-1 and V32G-2 cell lines were induced by early gene products of superinfecting wild-type HSV-1 and HSV-2, but were not constitutively expressed. The hybrid proteins expressed in infected V32G-1 and V32G-2 cells both colocalized with infected cell protein 8 (ICP8) into virus-replicative compart...Continue Reading

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