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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Il4ratm1Fbb
targeted mutation 1, Frank Brombacher
MGI:2657172
Summary 3 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Il4ratm1Fbb/Il4ratm1Fbb involves: BALB/c MGI:2657175
hm2
Il4ratm1Fbb/Il4ratm1Fbb involves: BALB/cJ MGI:3690930
cn3
Il4ratm1Fbb/Il4ratm2Fbb
Lyz2tm1(cre)Ifo/Lyz2+
involves: 129P2/OlaHsd * BALB/c MGI:3690928


Genotype
MGI:2657175
hm1
Allelic
Composition
Il4ratm1Fbb/Il4ratm1Fbb
Genetic
Background
involves: BALB/c
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Il4ratm1Fbb mutation (0 available); any Il4ra mutation (46 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• exhibited increased resistance to Leishmania major infection relative to BALB/c control mice
• during further course of infection mice developed progressive disease symptoms, whereas C57BL/6 mice and Il4-null BALB/c mice cleared the infection




Genotype
MGI:3690930
hm2
Allelic
Composition
Il4ratm1Fbb/Il4ratm1Fbb
Genetic
Background
involves: BALB/cJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Il4ratm1Fbb mutation (0 available); any Il4ra mutation (46 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice succumb to Schistosoma infection in ~59 days

growth/size/body
• progressive weight loss begins 6 weeks after S. mansoni infection; some animals lose 20% of original body weight

immune system
• in stimulated T cells
• mice demonstrate a dominant Th1 response to Schistosoma characterized by Ifng production
• livers show impaired alternative macrophage activation compared to wild-type
• livers show impaired macrophage recruitment after Schistosoma infection
• serum levels increase less than for controls after azoxymethane treatment
• elevated levels after azoxymethane treatment relative to controls
• mice have reduced Il-4, Il-5 and Il-10 production
• there is less cell recruitment than in wild-type liver granulomas; granuloma size and eosinophil content is decreased compared to wild-type or conditional mutant mice; intestinal granulomas show massive inflammatory cell infiltration
• granuloma form
• mice show impaired response to N. brasiliensis, with reduced goblet cell production, reduced worm expulsion and decreased Th2 response
• all mice die from Schistosoma infection with a mean survival time of 59 days, but all controls survive entire 80 days of monitoring

liver/biliary system
• granuloma form

digestive/alimentary system
• small but significant decline in epithelial cell proliferation
• decrease in the total epithelial cell/colifrectal crypt ratio
• the number of aberrant crypt foci in mice treated with azoxymethane is significantly higher than in similarly treated controls
• size of foci is smaller than controls but not significantly

homeostasis/metabolism
• serum levels increase less than for controls after azoxymethane treatment
• elevated levels after azoxymethane treatment relative to controls
• significantly higher TGF beta1 intestinal epithelial cell levels after azoxymethane treatment

hematopoietic system
• in stimulated T cells
• livers show impaired alternative macrophage activation compared to wild-type
• livers show impaired macrophage recruitment after Schistosoma infection

cellular
• livers show impaired macrophage recruitment after Schistosoma infection

endocrine/exocrine glands
• the number of aberrant crypt foci in mice treated with azoxymethane is significantly higher than in similarly treated controls
• size of foci is smaller than controls but not significantly




Genotype
MGI:3690928
cn3
Allelic
Composition
Il4ratm1Fbb/Il4ratm2Fbb
Lyz2tm1(cre)Ifo/Lyz2+
Genetic
Background
involves: 129P2/OlaHsd * BALB/c
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Il4ratm1Fbb mutation (0 available); any Il4ra mutation (46 available)
Il4ratm2Fbb mutation (0 available); any Il4ra mutation (46 available)
Lyz2tm1(cre)Ifo mutation (14 available); any Lyz2 mutation (40 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
mortality/aging
• mice succumb to Schistosoma infection in ~54 days

growth/size/body
• progressive weight loss begins 6 weeks after S. mansoni infection; some animals lose 20% of original body weight

immune system
• mice show a similar Th1 response to Il4ra-null mice and a Th2 response similar to wild-type in response to Schistosoma infection
• livers show impaired alternative macrophage activation compared to wild-type
• granulomas are similar to wild-type, but slightly larger and less compact: intestinal granulomas show massive inflammatory cell infiltration
• granulomas form
• mice develop protective immunity against Nippostrongylus brasiliensis, accompanied by Th2 development
• mice show 100% mortality during acute infection by Schistosoma mansoni; mean survival time is 54 days

liver/biliary system
• granulomas form
• level of fibrosis is similar to wild-type

digestive/alimentary system
• during infection by N. brasiliensis, mice develop goblet cell hyperplasis

hematopoietic system
• livers show impaired alternative macrophage activation compared to wild-type

cellular
• during infection by N. brasiliensis, mice develop goblet cell hyperplasis





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last database update
12/10/2024
MGI 6.24
The Jackson Laboratory