title: Incorporation of (E)-5-(2-iodovinyl)-2'-deoxyuridine into deoxyribonucleic acids of varicella-zoster virus (TK+ and TK- strains)-infected cells.
abstract: The incorporation of (E)-5-(2-iodovinyl)-2'-deoxyuridine (IVDU) into DNA of varicella-zoster virus (VZV)-infected human embryo fibroblasts was studied, using thymidine kinase-positive (TK+) and thymidine kinase-negative (TK-) VZV strains. [125I]IVDU was taken up by cells infected with TK+ VZV-, but not by TK- VZV- or mock-infected cells. [125I]IVDU was incorporated into both VZV DNA and cellular DNA of TK+ VZV-infected cells. When the cells were exposed to 0.3 microM IVDU, a more marked shift was noted in the buoyant density of viral DNA than of host DNA. In contrast, the DNAs isolated from TK- VZV- or mock-infected cells did not exhibit a detectable incorporation of [125I]IVDU. [125I] IVDU-labeled VZV DNA was purified from the viral nucleocapsids of TK+ VZV-infected cells. Substitution of no more than 0.1-1% of the thymidine residues in the VZV DNA by IVDU seemed to suffice to inhibit the replication of VZV.
mesh_terms: D001345:Autoradiography; D001692:Biological Transport; D001973:Bromodeoxyuridine / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology; D002478:Cells, Cultured; D004279:DNA, Viral / Q000378:metabolism*; D004305:Dose-Response Relationship, Drug; D014645:Herpesvirus 3, Human / Q000187:drug effects / Q000378:metabolism*; D006801:Humans; D007065:Idoxuridine / Q000031:analogs & derivatives* / Q000378:metabolism / Q000494:pharmacology; D009693:Nucleic Acid Hybridization; D013936:Thymidine / Q000378:metabolism; D013937:Thymidine Kinase / Q000378:metabolism*; D013997:Time Factors; D014779:Virus Replication / Q000187:drug effects
chemical_list: D004279:DNA, Viral; C020235:brivudine; C030360:5-(2-iodovinyl)-2'-deoxyuridine; D013937:Thymidine Kinase; D001973:Bromodeoxyuridine; D007065:Idoxuridine; D013936:Thymidine