title: Inhibition of viral RNA synthesis by 1-methyl-1-nitrosourea.
abstract: The effect of 1-methyl-1-nitrosourea on the synthesis of viral RNA of Poliovirus in KB-cells has been examined. It was found that 1-methyl-1-nitrosourea at concentration of 400 micrograms/ml blocked the synthesis of viral RNA in Poliovirus-infected KB-cells irrespective of whether it was added to culture medium immediately after virus adsorption or 2 h later. Furthermore, the inhibitory effect of 1-methyl-1-nitrosourea on the growth of Poliovirus is comparable to that of Herpes simplex virus grown in KB-cells. These findings suggest that 1-methyl-1-nitrosourea does not discriminate between these two types of viruses and moreover that the viral RNA of Poliovirus could also be the target for the action of the drug.
mesh_terms: D002460:Cell Line; D006801:Humans; D008770:Methylnitrosourea / Q000494:pharmacology*; D009062:Mouth Neoplasms; D009607:Nitrosourea Compounds / Q000494:pharmacology*; D017955:Poliovirus / Q000187:drug effects / Q000254:growth & development / Q000378:metabolism*; D012367:RNA, Viral / Q000096:biosynthesis*; D018139:Simplexvirus / Q000254:growth & development
chemical_list: D009607:Nitrosourea Compounds; D012367:RNA, Viral; D008770:Methylnitrosourea