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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Gadd45btm1Flv
targeted mutation 1, Richard A Flavell
MGI:2687355
Summary 4 genotypes
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Gadd45btm1Flv/Gadd45btm1Flv B6.129S6-Gadd45btm1Flv MGI:3839941
hm2
Gadd45btm1Flv/Gadd45btm1Flv involves: 129S6/SvEvTac MGI:2687356
cx3
Gadd45btm1Flv/Gadd45btm1Flv
Gadd45gtm1Flv/Gadd45gtm1Flv
involves: 129S1/Sv * 129S6/SvEvTac MGI:3839902
cx4
Gadd45btm1Flv/Gadd45btm1Flv
Gadd45gtm1Flv/Gadd45gtm1Flv
involves: 129S1/Sv * 129S6/SvEvTac * C57BL/6 MGI:3839942


Genotype
MGI:3839941
hm1
Allelic
Composition
Gadd45btm1Flv/Gadd45btm1Flv
Genetic
Background
B6.129S6-Gadd45btm1Flv
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gadd45btm1Flv mutation (1 available); any Gadd45b mutation (12 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• nave and Th1 CD4+ T cells have a higher rate of proliferation when activated in vitro
• mice develop mild splenomegaly around 10 months of age
• Th1 T cells proliferate at a faster rate when activated in vitro
• proliferation rate is increased even more when Th1 cells are activated in the presence of IL-12 and IL-18
• Th1 T cells are resistant to activation-induced cell death caused by TCR stimulus without co-stimulation
• there is increased production of IFN-gamma by transplanted mutant T cells in the central nervous system of immunocompromised mice that have induced EAE
• there is increased production of IFN-gamma by transplanted mutant T cells in the central nervous system of immunocompromised mice that have induced EAE
• mice have a longer duration of peak disease than controls when mice are immunized with MOG peptide and a low dose of adjuvant
• 60% of mice die compared to none of controls when mice have EAE induced with MOG peptide and a high dose of adjuvant
• 100% of immunocompromised mice transplanted with mutant CD4+ T cells develop EAE after immunization compared to 43% of mice that were recipients of wild-type mice
• 71% of mice transplanted with mutant CD4+ T cells die from EAE after immunization compared to 14% for hosts with wild-type CD4+ T cells
• immune complex deposits are found in the glomeruli of 10 month old mice

renal/urinary system
• immune complex deposits are found in the glomeruli of 10 month old mice

hematopoietic system
• nave and Th1 CD4+ T cells have a higher rate of proliferation when activated in vitro
• mice develop mild splenomegaly around 10 months of age
• Th1 T cells proliferate at a faster rate when activated in vitro
• proliferation rate is increased even more when Th1 cells are activated in the presence of IL-12 and IL-18
• Th1 T cells are resistant to activation-induced cell death caused by TCR stimulus without co-stimulation
• there is increased production of IFN-gamma by transplanted mutant T cells in the central nervous system of immunocompromised mice that have induced EAE

cellular
• nave and Th1 CD4+ T cells have a higher rate of proliferation when activated in vitro

growth/size/body
• mice develop mild splenomegaly around 10 months of age




Genotype
MGI:2687356
hm2
Allelic
Composition
Gadd45btm1Flv/Gadd45btm1Flv
Genetic
Background
involves: 129S6/SvEvTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gadd45btm1Flv mutation (1 available); any Gadd45b mutation (12 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• there is a 2- to 3- fold reduction in the number of Th1 T cells produced in vivo after immunization with keyhole limpet hemocyanin
• similar reductions in Th1 T cell production are found after infection with Listera monocytogenes
• IL-2 secretion by nave CD4 T cells is about one-third of that in controls
• IL-2 secretion by Th1-polarized CD4 T cells is about one-third of that in controls
• IFN-gamma secretion by Th1-polarized CD4 T cells is also reduced greatly
• polarized Th2 CD4 T cells secrete about half as much IL-4 as controls
• dendritic cells produce less IL-6 and IL-12 after activation by low doses of LPS
• IFN-gamma secretion by Th1-polarized CD4 T cells is about one-fifth of that in controls
• reductions in IFN-gamma secretion are more dramatic when Th1 T cells are stimulated with IL-12 and IL-18 compared to controls
• there is a large reduction in IL-12 production by dendritic cells after low dose LPS stimulation
• IL-2 secretion by nave CD4 T cells is about one-third of that in controls
• similar defects in IL-2 secretion are observed for Th1-polarized CD4 T cells
• polarized Th2 CD4 T cells secrete about half as much IL-4 as controls
• there is a large reduction in IL-6 production by dendritic cells after low dose LPS stimulation

hematopoietic system
• there is a 2- to 3- fold reduction in the number of Th1 T cells produced in vivo after immunization with keyhole limpet hemocyanin
• similar reductions in Th1 T cell production are found after infection with Listera monocytogenes
• IL-2 secretion by nave CD4 T cells is about one-third of that in controls
• IL-2 secretion by Th1-polarized CD4 T cells is about one-third of that in controls
• IFN-gamma secretion by Th1-polarized CD4 T cells is also reduced greatly
• polarized Th2 CD4 T cells secrete about half as much IL-4 as controls




Genotype
MGI:3839902
cx3
Allelic
Composition
Gadd45btm1Flv/Gadd45btm1Flv
Gadd45gtm1Flv/Gadd45gtm1Flv
Genetic
Background
involves: 129S1/Sv * 129S6/SvEvTac
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gadd45btm1Flv mutation (1 available); any Gadd45b mutation (12 available)
Gadd45gtm1Flv mutation (1 available); any Gadd45g mutation (11 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• Th1 T cell production is severely reduced after infection with Listera monocytogenes compared to controls

hematopoietic system
• Th1 T cell production is severely reduced after infection with Listera monocytogenes compared to controls




Genotype
MGI:3839942
cx4
Allelic
Composition
Gadd45btm1Flv/Gadd45btm1Flv
Gadd45gtm1Flv/Gadd45gtm1Flv
Genetic
Background
involves: 129S1/Sv * 129S6/SvEvTac * C57BL/6
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Gadd45btm1Flv mutation (1 available); any Gadd45b mutation (12 available)
Gadd45gtm1Flv mutation (1 available); any Gadd45g mutation (11 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mice have severe splenomegaly by 10 months of age with cellularity at least 3-fold greater than in controls
• increases size is from an increased number of memory CD4+ T cells and B cells
• increased mature B cell numbers are found in the spleen of 10 month old mice
• increased memory/effector (CD4+ CD44+) T cells are found in the spleen of 10 month old mice
• sera levels of IgG1 are 10-fold higher in mice 10 months of age
• sera levels of IgM are 10-fold higher in mice 10 months of age
• a large amount of anti-dsDNA IgM and IgG1 is found in the sera of 10 month old mice
• a large amount of anti-histone IgM and IgG1 is found in the sera of 10 month old mice
• immune complex deposits are found in the glomeruli of 10 month old mice

renal/urinary system
• immune complex deposits are found in the glomeruli of 10 month old mice

hematopoietic system
• mice have severe splenomegaly by 10 months of age with cellularity at least 3-fold greater than in controls
• increases size is from an increased number of memory CD4+ T cells and B cells
• increased mature B cell numbers are found in the spleen of 10 month old mice
• increased memory/effector (CD4+ CD44+) T cells are found in the spleen of 10 month old mice
• sera levels of IgG1 are 10-fold higher in mice 10 months of age
• sera levels of IgM are 10-fold higher in mice 10 months of age

growth/size/body
• mice have severe splenomegaly by 10 months of age with cellularity at least 3-fold greater than in controls
• increases size is from an increased number of memory CD4+ T cells and B cells





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last database update
11/12/2024
MGI 6.24
The Jackson Laboratory