PMID: 9557684Apr 29, 1998Paper

The mouse H-2A region influences the envelope gene structure of tumor-associated murine leukemia viruses

Journal of Virology
J D Nuckols, C Y Thomas

Abstract

C57BL/10 (B10) strains congenic at the mouse major histocompatibility locus (H-2) were injected with a modified ecotropic SL3-3 murine leukemia virus (MuLV) to determine the effect of the H-2 genes on the envelope gene structure of recombinant MuLVs. All tested strains rapidly developed T-cell lymphomas, and recombinant proviruses were detected in the tumor DNAs by Southern blot. The B10.D2 (H-2d), B10.Br (H-2k), B10.Q (H-2q), and B10.RIII (H-2r) strains exhibited a TI phenotype in which almost all tumors contained type I recombinants. These recombinants characteristically acquire envelope gene sequences from the endogenous polytropic viruses but retain the 5' p15E (TM) gene sequences from the ecotropic virus. The parental B10 (H-2b) strain, however, had a novel phenotype that was designated NS for nonselective. Only 30% of the B10 tumors had detectable type I recombinants, whereas a proportion of the others appeared to contain type II recombinants that lacked the type I-specific ecotropic p15E gene sequences. Studies of other B10 congenic strains with hybrid H-2 loci and selected F1 animals revealed that the NS phenotype was regulated by a dominant gene(s) that mapped to the A region of H-2b. These results demonstrate that a h...Continue Reading

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