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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Il4+
wild type
MGI:2179957
Summary 7 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
ht1
Il4tm1.1Wep/Il4+ C.129P2-Il4tm1.1Wep MGI:3818433
ht2
Il4tm1(CD2)Irvr/Il4+ involves: 129P2/OlaHsd * C57BL/6 MGI:3713049
cn3
Il13tm1(YFP/cre)Lky/Il13+
Il4tm1(CD2)Mmrs/Il4+
Gt(ROSA)26Sortm1(DTA)Lky/Gt(ROSA)26Sor+
involves: 129P2/OlaHsd * 129S4/SvJae MGI:5435903
cx4
Il4tm1.1Wep/Il4+
Stat6tm1Gru/Stat6tm1Gru
C.129-Stat6tm1Gru Il4tm1.1Wep MGI:3818430
cx5
Cigs2tm1.1Anse/Cigs2+
Il4tm1(CD2)Mmrs/Il4+
involves: 129 * BALB/cJ * C57BL/6 MGI:5313999
cx6
Il13tm1Anjm/Il13+
Il4tm1.1Wep/Il4+
involves: 129P2/OlaHsd * BALB/c * C57BL/6 MGI:3818436
cx7
Il4tm1Lky/Il4+
Lattm1.1Mal/Lattm1.1Mal
involves: 129S2/SvPas * C57BL/6 MGI:4357974


Genotype
MGI:3818433
ht1
Allelic
Composition
Il4tm1.1Wep/Il4+
Genetic
Background
C.129P2-Il4tm1.1Wep
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Il4tm1.1Wep mutation (0 available); any Il4 mutation (48 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• serum IgE is half that of controls 15 days after parasitic nematode infection
• serum IgE is also significantly reduced when the allergic airway model or the IgD neutralization model is induced

hematopoietic system
• serum IgE is half that of controls 15 days after parasitic nematode infection
• serum IgE is also significantly reduced when the allergic airway model or the IgD neutralization model is induced




Genotype
MGI:3713049
ht2
Allelic
Composition
Il4tm1(CD2)Irvr/Il4+
Genetic
Background
involves: 129P2/OlaHsd * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Il4tm1(CD2)Irvr mutation (0 available); any Il4 mutation (48 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cellular
N
• allele activation is initially stochastic; frequency of biallelic expression Il-4 is independent of Il-4 levels but depends on T cell receptor signaling strength

immune system
N
• human CD2 reporter gene is expressed in Th2 and Th0 cells, but not in Th1 cells expressing only IFNgamma; expression is inducible upon T cell activation




Genotype
MGI:5435903
cn3
Allelic
Composition
Il13tm1(YFP/cre)Lky/Il13+
Il4tm1(CD2)Mmrs/Il4+
Gt(ROSA)26Sortm1(DTA)Lky/Gt(ROSA)26Sor+
Genetic
Background
involves: 129P2/OlaHsd * 129S4/SvJae
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gt(ROSA)26Sortm1(DTA)Lky mutation (3 available); any Gt(ROSA)26Sor mutation (1095 available)
Il13tm1(YFP/cre)Lky mutation (1 available); any Il13 mutation (28 available)
Il4tm1(CD2)Mmrs mutation (0 available); any Il4 mutation (48 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• in the lungs of mice infected with N. brasiliensis
• mice exhibit reduced helminthes Nippostrongylus brasiliensis expulsion compared with control mice

hematopoietic system
• in the lungs of mice infected with N. brasiliensis




Genotype
MGI:3818430
cx4
Allelic
Composition
Il4tm1.1Wep/Il4+
Stat6tm1Gru/Stat6tm1Gru
Genetic
Background
C.129-Stat6tm1Gru Il4tm1.1Wep
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Il4tm1.1Wep mutation (0 available); any Il4 mutation (48 available)
Stat6tm1Gru mutation (4 available); any Stat6 mutation (54 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• CD4+ T cells fail to express IL-4 or GFP after in vitro activation under Th2 conditions and instead produce IFN-gamma (8%)
• these in vitro activated T cells also fail to upregulate mRNA encoding for IL-13, IL-5, IL-10, and GATA-3 proteins
• however, in vivo Th2 cell differentiation in response to a parasitic nematode infection is normal with Th2 cell numbers peaking at days 9-12 after primary infection and days 5-7 after secondary infection
• these Th2 cells upregulate mRNA encoding for IL-13, IL-5, and GATA-3 proteins
• normal in vivo Th2 cell differentiation is also observed in the Th2 priming models of allergic airway using either keyhole limpet hemocyanin or OVA sensitization, IgD neutralization, and intradermal ear injection of dead nematodes
• eosinophil recruitment to the airways does not occur during infection with a parasitic nematode compared to controls which has a sizable migration for the first two weeks after primary and secondary infections
• serum IgE is absent 15 days after parasitic nematode infection compared to the 400 ng/ml present in controls
• serum IgE is also absent when the allergic airway model or the IgD neutralization model are induced

hematopoietic system
• CD4+ T cells fail to express IL-4 or GFP after in vitro activation under Th2 conditions and instead produce IFN-gamma (8%)
• these in vitro activated T cells also fail to upregulate mRNA encoding for IL-13, IL-5, IL-10, and GATA-3 proteins
• however, in vivo Th2 cell differentiation in response to a parasitic nematode infection is normal with Th2 cell numbers peaking at days 9-12 after primary infection and days 5-7 after secondary infection
• these Th2 cells upregulate mRNA encoding for IL-13, IL-5, and GATA-3 proteins
• normal in vivo Th2 cell differentiation is also observed in the Th2 priming models of allergic airway using either keyhole limpet hemocyanin or OVA sensitization, IgD neutralization, and intradermal ear injection of dead nematodes
• eosinophil recruitment to the airways does not occur during infection with a parasitic nematode compared to controls which has a sizable migration for the first two weeks after primary and secondary infections
• serum IgE is absent 15 days after parasitic nematode infection compared to the 400 ng/ml present in controls
• serum IgE is also absent when the allergic airway model or the IgD neutralization model are induced




Genotype
MGI:5313999
cx5
Allelic
Composition
Cigs2tm1.1Anse/Cigs2+
Il4tm1(CD2)Mmrs/Il4+
Genetic
Background
involves: 129 * BALB/cJ * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Cigs2tm1.1Anse mutation (0 available); any Cigs2 mutation (0 available)
Il4tm1(CD2)Mmrs mutation (0 available); any Il4 mutation (48 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
N
• following intraperitoneal injection of ovalbumin, mice exhibit normal IgG2b response compared with Il4tm1(CD2)Mmrs heterozygotes
• T cells and basophils exhibit normal Il13 production
• reduced CD2+ basophils from mice sensitized and challenged with ovalbumin to induce allergic airway inflammation
• following intraperitoneal injection of ovalbumin as in Il4tm1(CD2)Mmrs homozygotes
• following intraperitoneal injection of ovalbumin as in Il4tm1(CD2)Mmrs homozygotes
• in Th2 polarized CD4+ T cells compared with Il4tm1(CD2)Mmrs heterozygotes
• in parathymic lymph node and lung-draining mediastinal node T cells from mice injected with ovalbumin
• in T cells and basophils from mice sensitized and challenged with ovalbumin to induce allergic airway inflammation

hematopoietic system
• reduced CD2+ basophils from mice sensitized and challenged with ovalbumin to induce allergic airway inflammation
• following intraperitoneal injection of ovalbumin as in Il4tm1(CD2)Mmrs homozygotes
• following intraperitoneal injection of ovalbumin as in Il4tm1(CD2)Mmrs homozygotes




Genotype
MGI:3818436
cx6
Allelic
Composition
Il13tm1Anjm/Il13+
Il4tm1.1Wep/Il4+
Genetic
Background
involves: 129P2/OlaHsd * BALB/c * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Il13tm1Anjm mutation (0 available); any Il13 mutation (28 available)
Il4tm1.1Wep mutation (0 available); any Il4 mutation (48 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• F1 crosses between mice homozygote for either allele creates offspring that has only one functional Il13 allele that is in cis with Il4tm1.1Wep GFP reporter allele
• conversely, the one functional, wild-type Il4 allele is in cis with the null Il13tm1Anjm allele
• CD4+ T cells from these mice primed in vitro under Th2 conditions have only 4.5% of T cells producing IL-4 compared to 14.8% of T cells producing IL-4 that are homozygous for wild-type Il13 and heterozygote for Il4tm1.1Wep allele
• in contrast, GFP expression is similar in primed T cells from both sets of mice (5.9% and 6.8%)
• F1 crosses between 129 mice and Il4tm1.1Wep homozygotes demonstrated the diminished IL-4 secretion was not the result of 129 polymorphisms in the Il4-Il13 genomic region




Genotype
MGI:4357974
cx7
Allelic
Composition
Il4tm1Lky/Il4+
Lattm1.1Mal/Lattm1.1Mal
Genetic
Background
involves: 129S2/SvPas * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Il4tm1Lky mutation (3 available); any Il4 mutation (48 available)
Lattm1.1Mal mutation (0 available); any Lat mutation (9 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• the first CD4+ T cells that seed the periphery in newborn mice undergo rapid expansion and convert into pathogenic Th2 effector cells

hematopoietic system
• the first CD4+ T cells that seed the periphery in newborn mice undergo rapid expansion and convert into pathogenic Th2 effector cells





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last database update
03/18/2025
MGI 6.24
The Jackson Laboratory