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Effects of nucleoside analogs on Epstein-Barr virus-induced transformation of human umbilical cord leukocytes and Epstein-Barr virus expression in transformed cells



Effects of nucleoside analogs on Epstein-Barr virus-induced transformation of human umbilical cord leukocytes and Epstein-Barr virus expression in transformed cells



Antimicrobial Agents and ChemoTherapy 15(1): 101-110



Two methods of assay, measuring (i) stimulation of host cell DNA synthesis by [(3)H]thymidine incorporation and (ii) morphological transformation in microtiter plates, were employed to determine what effect treatment during infection with adenine arabinoside or 5-iodo-5'-amino-2',5'-dideoxyuridine has on Epstein-Barr virus (EBV) (B95-8)-induced transformation of human umbilical cord leukocytes. It was found that adenine arabinoside inhibited EBV-induced transformation in a dose-dependent manner in both assays, beginning at drug concentrations (<2 mug/ml) which had little effect on either spontaneous or phytohemagglutinin-induced host cell DNA synthesis. Adenine arabinoside was more effective in inhibiting morphological transformation than EBV-induced host DNA synthesis. Adenine arabinoside treatment was also effective in reducing both EB viral capsid antigen expression and production of biologically active extracellular transforming virus in EBV-transformed cells. In contrast, 5-iodo-5'-amino-2',5'-dideoxyuridine, which inhibited herpes simplex virus replication, had little effect on EBV-induced transformation as measured by either method of assay. However, 5-iodo-5'-amino-2',5'-dideoxyuridine was found to be effective in inhibiting viral capsid antigen expression and production of extracellular transforming virus in EBV-transformed cells.

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Accession: 039976874

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PMID: 218497

DOI: 10.1128/aac.15.1.101


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