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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Rfx5tm1.1Ifo
targeted mutation 1.1, Irmgard Foerster
MGI:2386501
Summary 2 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Rfx5tm1.1Ifo/Rfx5tm1.1Ifo involves: 129 * C57BL/6 MGI:3844892
cn2
Rfx5tm1Ifo/Rfx5tm1.1Ifo
Lyz2tm1(cre)Ifo/Lyz2+
involves: 129 * C57BL/6 * C.B-20 MGI:3844880


Genotype
MGI:3844892
hm1
Allelic
Composition
Rfx5tm1.1Ifo/Rfx5tm1.1Ifo
Genetic
Background
involves: 129 * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Rfx5tm1.1Ifo mutation (0 available); any Rfx5 mutation (34 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• Kupffer cells do not express MHC II complexes
• thymus cortex is almost completely devoid of MHC-II expression
• peripheral CD4+ T cell numbers are reduced more than 10-fold
• CD4 single-positive thymocyte numbers are decreased to 1.4% of thymocytes compared to 7.6% in wild-type controls
• class II expression on most CD11c+ dendritic cells is absent or is reduced
• only 1.2% of bone marrow derived dendritic cells express class II compared to 32% of wild-type controls
• unactivated B cells do not express class II on the surface and have 10-fold lower expression than controls when activated with LPS and IL-4
• antigen specific IgG1 levels are 100 to 1000-fold less than controls during the course of a secondary response to a T cell-dependent antigen
• mice fail to produce measurable antigen specific IgM levels in response to T cell dependent antigens
• thymus cortex is almost completely devoid of MHC-II expression while the thymic medulla cells strongly expresses MHC-II on their cell surface
• unactivated B cells do not express class II on the surface and have 10-fold lower expression than controls when activated with LPS and IL-4
• macrophages do not express class II nor do Kupffer cells in the liver
• class II expression on most CD11c+ dendritic cells is absent or is reduced
• only 1.2% of bone marrow derived dendritic cells express class II compared to 32% of wild-type controls
• peritoneal macrophages fail to upregulate class II expression in response to IFN-gamma
• macrophages do not express class II
• peritoneal macrophages fail to upregulate class II expression in response to IFN-gamma

hematopoietic system
• Kupffer cells do not express MHC II complexes
• thymus cortex is almost completely devoid of MHC-II expression
• peripheral CD4+ T cell numbers are reduced more than 10-fold
• CD4 single-positive thymocyte numbers are decreased to 1.4% of thymocytes compared to 7.6% in wild-type controls
• class II expression on most CD11c+ dendritic cells is absent or is reduced
• only 1.2% of bone marrow derived dendritic cells express class II compared to 32% of wild-type controls
• unactivated B cells do not express class II on the surface and have 10-fold lower expression than controls when activated with LPS and IL-4
• antigen specific IgG1 levels are 100 to 1000-fold less than controls during the course of a secondary response to a T cell-dependent antigen
• mice fail to produce measurable antigen specific IgM levels in response to T cell dependent antigens
• macrophages do not express class II
• peritoneal macrophages fail to upregulate class II expression in response to IFN-gamma

liver/biliary system
• Kupffer cells do not express MHC II complexes

cardiovascular system
• Kupffer cells do not express MHC II complexes

endocrine/exocrine glands
• thymus cortex is almost completely devoid of MHC-II expression




Genotype
MGI:3844880
cn2
Allelic
Composition
Rfx5tm1Ifo/Rfx5tm1.1Ifo
Lyz2tm1(cre)Ifo/Lyz2+
Genetic
Background
involves: 129 * C57BL/6 * C.B-20
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Lyz2tm1(cre)Ifo mutation (14 available); any Lyz2 mutation (41 available)
Rfx5tm1.1Ifo mutation (0 available); any Rfx5 mutation (34 available)
Rfx5tm1Ifo mutation (1 available); any Rfx5 mutation (34 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• only 6.2% of bone marrow derived macrophages express MHC-II on the surface compared to 30% of controls
• incubation with IFN-gamma increases percentage to 19% which is much less than 72% of wild-type macrophages

hematopoietic system
• only 6.2% of bone marrow derived macrophages express MHC-II on the surface compared to 30% of controls
• incubation with IFN-gamma increases percentage to 19% which is much less than 72% of wild-type macrophages





Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
04/16/2024
MGI 6.23
The Jackson Laboratory