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AcMNPV enhances infection by ThorNPV in Sf21 cells and SeMNPV in Hi5 cells.
- Source :
-
Archives of virology [Arch Virol] 2012 Oct; Vol. 157 (10), pp. 1875-85. Date of Electronic Publication: 2012 Jun 13. - Publication Year :
- 2012
-
Abstract
- An expression cassette containing the DsRed2 gene, which encodes the red fluorescent protein (RFP), was inserted into the wide-host-range Autographa californica M nucleopolyhedrovirus (AcMNPV) at the polyhedrin locus (vAcDsRed2). An expression cassette containing the enhanced green fluorescent protein (EGFP) gene was inserted at the gp37 locus of the narrow-host-range Thysanoplusia orichalcea MNPV (ThorMNPV) and the p10 locus of Spodoptera exigua MNPV (SeMNPV) to produce vThGFP and vSeGFP, respectively. vThGFP and vSeGFP are poor at infecting Sf21 and Hi5 cells, respectively, whereas vAcDsRed2 is highly infectious to both cell lines. During co-infection, vAcDsRed2 enhanced vThGFP infection in Sf21 cells by approximately 20-fold, and it enhanced vSeGFP infection in Hi5 cells by more than 300-fold, as detected by fluorescence measurements. In contrast, vThGFP reduced vAcDsRed2 infection by 5.4-fold in Sf21 cells, while vSeGFP reduced vAcDsRed2 by 3.2-fold in Hi5 cells. Plaque assay data did not suggest viral recombination, but vThGFP plaques surrounded by vAcDsRed2 plaques were observed. A viral DNA replication assay performed by real-time quantitative PCR suggested that the detected fluorescence correlated with virus replication. Sf21 cells infected with vAcDsRed2 were resistant to superinfection by viruses of the same type expressing EGFP (vAcGFP). These results demonstrated that AcMNPV could enhance replication of ThorMNPV and SeMNPV in non-permissive cells without recombination.
- Subjects :
- Animals
Cells, Cultured
DNA Replication
DNA, Viral genetics
Green Fluorescent Proteins genetics
Green Fluorescent Proteins metabolism
Luminescent Proteins genetics
Luminescent Proteins metabolism
Nucleopolyhedroviruses classification
Nucleopolyhedroviruses genetics
Nucleopolyhedroviruses physiology
Occlusion Body Matrix Proteins
Viral Structural Proteins genetics
Viral Structural Proteins metabolism
Red Fluorescent Protein
Coinfection virology
Moths virology
Nucleopolyhedroviruses pathogenicity
Sf9 Cells virology
Virus Replication
Subjects
Details
- Language :
- English
- ISSN :
- 1432-8798
- Volume :
- 157
- Issue :
- 10
- Database :
- MEDLINE
- Journal :
- Archives of virology
- Publication Type :
- Academic Journal
- Accession number :
- 22692678
- Full Text :
- https://doi.org/10.1007/s00705-012-1347-2