Epstein-Barr virus origin of lytic replication mediates association of replicating episomes with promyelocytic leukaemia protein nuclear bodies and replication compartments.
Epstein-Barr virus (EBV) establishes a latent persistence from which it can be reactivated to undergo lytic replication. Late lytic-cycle gene expression is linked to lytic DNA replication, as it is sensitive to the same inhibitors that block lytic replication, and it has recently been shown that the viral origin of lytic replication (ori lyt) is required in cis for late-gene expression. During the lytic cycle, the viral genome forms replication compartments, which are usually adjacent to promyelocytic leukaemia protein (PML) nuclear bodies. A tetracycline repressor DNA-binding domain-enhanced green fluorescent protein fusion was used to visualize replicating plasmids carrying a tetracycline operator sequence array. ori lyt mediated the production of plasmid replication compartments that were associated with PML nuclear bodies. Plasmids carrying ori lyt and EBV itself were visualized in the same cells and replicated in similar regions of the nucleus, further supporting the validity of the plasmids for studying late-gene regulation.
Amon
Wolfgang
W
Department of Virology, Imperial College Faculty of Medicine, St Mary's Campus, Norfolk Place, London W2 1PG, UK.
White
Robert E
RE
Department of Virology, Imperial College Faculty of Medicine, St Mary's Campus, Norfolk Place, London W2 1PG, UK.
Farrell
Paul J
PJ
Department of Virology, Imperial College Faculty of Medicine, St Mary's Campus, Norfolk Place, London W2 1PG, UK.
D045744:Cell Line, Tumor; D002467:Cell Nucleus / Q000378:metabolism* / Q000821:virology; D004279:DNA, Viral / Q000378:metabolism; D020031:Epstein-Barr Virus Infections / Q000821:virology*; D004854:Herpesvirus 4, Human / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D006801:Humans; D009363:Neoplasm Proteins / Q000378:metabolism*; D009687:Nuclear Proteins / Q000378:metabolism*; D010957:Plasmids / Q000378:metabolism*; D000071156:Promyelocytic Leukemia Protein; D018741:Replication Origin / Q000502:physiology*; D014157:Transcription Factors / Q000378:metabolism*; D025521:Tumor Suppressor Proteins / Q000378:metabolism*; D014779:Virus Replication
D004279:DNA, Viral; D009363:Neoplasm Proteins; D009687:Nuclear Proteins; D000071156:Promyelocytic Leukemia Protein; D014157:Transcription Factors; D025521:Tumor Suppressor Proteins; C070576:PML protein, human