Biomaterial Database

Genetic resistance to Friend leukemia virus in mice: masking of Fv-2 phenotype by an epistatic gene, Fv-4. 1977

T Odaka, and H Ikeda

Mice of strain G which have Fv-4rr genotype resemble those with Fv-2rr genotype in resisting the induction of spleen foci or splenomegaly by Friend leukemia virus. However, NB-tropic Friend virus replicates well in Fv-2rr mice, but not in G mice. To determine the Fv-2 genotype, G mice were crossed with Fv-2rr mice, and the hybrids were tested for the susceptibility to NB-tropic Friend virus. The (G X Fv-2rr) F1 hybrids were similar to G. In F1 X Fv-2rr backcross generation, three types of mice appeared; 1) G type, 2) Fv-2rr type and 3) Fv-2ss type. Mice of the last type supported virus replication and developed splenomegaly. Mice of types 1), 2) and 3) appeared with the expected ratio of 2:1:1. It will be concluded that in G mice Fv-4r gene suppresses the virus replication, and hence masks the expression of Fv-2s gene. Data of F2 generation support this conclusion.

UI	MeSH Term	Description	Entries
D007113	Immunity, Innate	The capacity of a normal organism to remain unaffected by microorganisms and their toxins. It results from the presence of naturally occurring ANTI-INFECTIVE AGENTS, constitutional factors such as BODY TEMPERATURE and immediate acting immune cells such as NATURAL KILLER CELLS.	Immunity, Native,Immunity, Natural,Immunity, Non-Specific,Resistance, Natural,Innate Immune Response,Innate Immunity,Immune Response, Innate,Immune Responses, Innate,Immunity, Non Specific,Innate Immune Responses,Native Immunity,Natural Immunity,Natural Resistance,Non-Specific Immunity
D007942	Leukemia, Experimental	Leukemia induced experimentally in animals by exposure to leukemogenic agents, such as VIRUSES; RADIATION; or by TRANSPLANTATION of leukemic tissues.	Experimental Leukemia,Experimental Leukemias,Leukemia Model, Animal,Leukemias, Experimental,Animal Leukemia Model,Animal Leukemia Models,Leukemia Models, Animal
D008297	Male		Males
D008815	Mice, Inbred Strains	Genetically identical individuals developed from brother and sister matings which have been carried out for twenty or more generations, or by parent x offspring matings carried out with certain restrictions. All animals within an inbred strain trace back to a common ancestor in the twentieth generation.	Inbred Mouse Strains,Inbred Strain of Mice,Inbred Strain of Mouse,Inbred Strains of Mice,Mouse, Inbred Strain,Inbred Mouse Strain,Mouse Inbred Strain,Mouse Inbred Strains,Mouse Strain, Inbred,Mouse Strains, Inbred,Strain, Inbred Mouse,Strains, Inbred Mouse
D010641	Phenotype	The outward appearance of the individual. It is the product of interactions between genes, and between the GENOTYPE and the environment.	Phenotypes
D005260	Female		Females
D005622	Friend murine leukemia virus	A strain of Murine leukemia virus (LEUKEMIA VIRUS, MURINE) producing leukemia of the reticulum-cell type with massive infiltration of liver, spleen, and bone marrow. It infects DBA/2 and Swiss mice.	Friend Virus,Rowson-Parr Virus,Rowson Parr Virus,Virus, Friend,Virus, Rowson-Parr
D005838	Genotype	The genetic constitution of the individual, comprising the ALLELES present at each GENETIC LOCUS.	Genogroup,Genogroups,Genotypes
D006824	Hybridization, Genetic	The genetic process of crossbreeding between genetically dissimilar parents to produce a hybrid.	Crossbreeding,Hybridization, Intraspecies,Crossbreedings,Genetic Hybridization,Genetic Hybridizations,Hybridizations, Genetic,Hybridizations, Intraspecies,Intraspecies Hybridization,Intraspecies Hybridizations
D000483	Alleles	Variant forms of the same gene, occupying the same locus on homologous CHROMOSOMES, and governing the variants in production of the same gene product.	Allelomorphs,Allele,Allelomorph