title: Characterization of Fv-1 gene-product-mediated resistance transfer.
abstract: Fv-1 gene-specific resistance to ecotropic murine retroviruses can be transferred to permissive cells with RNA prepared from restrictive cells. The active RNA has a sedimentation coefficient of 20-22S at low ionic strength and multiple regions of activity (5-6S, 10-12S, 24-27S) at high ionic strength. The maximum level of resistance transfer cannot be enhanced with noninhibitory carrier RNA or facilitators of RNA uptake, and the maximum inhibition (40-60%) is independent of the MOI. The low efficiency of resistance transfer is, therefore, probably the result of a fraction of cells resistant to RNA uptake.
mesh_terms: D000818:Animals; D002478:Cells, Cultured; D002499:Centrifugation, Density Gradient; D002850:Chromatography, Gel; D004622:Embryo, Mammalian / Q000276:immunology; D005796:Genes; D007116:Immunization, Passive; D009052:Leukemia Virus, Murine; D007942:Leukemia, Experimental / Q000276:immunology*; D051379:Mice; D008807:Mice, Inbred BALB C; D012313:RNA / Q000235:genetics / Q000302:isolation & purification*
chemical_list: D012313:RNA