Constitutive expression of simian virus 40 large T antigen in monkey cells activates their capacity to support polyomavirus replication.
Polyomavirus DNA replication is normally restricted to rodent cells, and simian virus 40 (SV40) DNA replication is restricted to primate cells. We demonstrate that DNAs containing the polyomavirus origin can be replicated in monkey cells which constitutively express SV40 large T antigen. Permissivity is most likely caused by SV40 T antigen modification of cellular protein(s) required to replicate the polyomavirus origin. A possible target for the T-antigen-induced modification is DNA polymerase alpha-DNA primase.
Tang
W J
WJ
Department of Microbiology, University of Texas, Austin 78712.
Folk
W R
WR
D000818:Animals; D000952:Antigens, Polyomavirus Transforming / Q000235:genetics*; D002460:Cell Line; D002478:Cells, Cultured; D003001:Cloning, Molecular; D004261:DNA Replication; D004279:DNA, Viral / Q000235:genetics; D015870:Gene Expression; D005814:Genes, Viral; D013539:Simian virus 40 / Q000235:genetics* / Q000276:immunology / Q000502:physiology; D015678:Viral Structural Proteins / Q000235:genetics; D014779:Virus Replication
D000952:Antigens, Polyomavirus Transforming; D004279:DNA, Viral; D015678:Viral Structural Proteins