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  • Title: Size of virus-specific RNA in B-34, a hamster tumor cell producing nucleic acids of type C viruses from three species.
    Author: Tsuchida N, Gilden RV, Hatanaka M.
    Journal: J Virol; 1975 Oct; 16(4):832-7. PubMed ID: 170418.
    Abstract:
    B-34 is the designation of a hamster tumor-derived cell line induced by the Harvey sarcoma virus. This cell line produces virions which contain structural proteins common to edogenous hamster viruses and nucleic acid sequences of hamster, mouse, and rat origin. The sedimentation characteristics of the intracellular virus-specific RNA was determined in sucrose gradients after treatment with dimethylsulfoxide by molecular hybridization using complementary DNA of strict virus specificity. Hamster virus-specific RNA sedimented at 35S (major peak) as is characteristic of productive infection by type C leukemia viruses of other species. Rat virus-specific RNA sedimented at 30S which is characteristic of the sarcoma virus-related genome found in nonproducer cells transformed by Kirsten sarcoma virus. Both Harvey and Kirsten sarcoma viruses contain a related but not necessarily identical 30S rat-specific component which is also found in normal cultured rat cells. Mouse cells producing Harvey sarcoma virus also contain a rat-specific 30S RNA. Mouse virus-derived sequences also sedimented at 30S in B-34 cells and in a similar size range in Harvey virus-infected mouse cells. The possibility that the mouse and rat-derived sequences are present on a single 30S RNA species which would then be related to sarcomagenic potential is one attractive hypothesis suggested by these data.
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