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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Arhgef1tm1Kdf
targeted mutation 1, Klaus-Dieter Fischer
MGI:3582489
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Arhgef1tm1Kdf/Arhgef1tm1Kdf involves: 129S1/Sv * 129X1/SvJ MGI:3665129


Genotype
MGI:3665129
hm1
Allelic
Composition
Arhgef1tm1Kdf/Arhgef1tm1Kdf
Genetic
Background
involves: 129S1/Sv * 129X1/SvJ
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Arhgef1tm1Kdf mutation (0 available); any Arhgef1 mutation (73 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• show a modest (about 66%) but significant reduction in T cell numbers in the spleen
• numbers of both T and B cells in lymph nodes are about 1.5-fold higher than in wild-type
• observe a 50% reduction in the B220hiIgMlo population in the bone marrow but show normal relative and absolute numbers of B220+ and B200+IgM+ B cells
• relative numbers of IgMhiIgDloCD21hiCD23lo marginal zone B (MZB) cells in the spleen is 1/3 to 1/6 of that seen in wild-type
• under uninduced conditions, observe decreased basal migration, or chemokinesis, of T and B cells in a transwell assay
• marginal zone B cells show substantially enhanced migration in response to serum, both increase in chemokinesis and chemotaxis
• in response to the TXA2 analog U46619 and LPA, both T and B cells show a profound reduction in actin polymerization, however show no differences in platelet shape change or aggregration
• basal proliferation of splenic B cells is normal, however B cell responses to anti-IgM stimulation and lipopolysaccharide are reduced
• B cell proliferation to anti-CD40 and IL-4 is slightly reduced
• basal proliferation of T cells after 2 days of culture in the absence of stimulator cells is increased compared to wild-type cells and after culture, T cells maintain a rate of uninduced proliferation that is higher than wild-type cells
• in the presence of allogenic T cell-depleted splenocytes, T cells do show increased proliferation, indicating that they are able to respond to stimulating cells
• lymph node T cells stimulated with anti-CD3 or ConA show increased basal proliferation compared with wild-type
• exhibit significantly reduced concentrations of IgG1 and IgG3 upon immunization with a thymus dependent or thymus independent antigen and reduced concentrations of IgG2a and IgG2b upon immunization with a thymus dependent antigen
• exhibit significantly reduced concentrations of IgM upon immunization with a thymus dependent or thymus independent antigen
• exhibit impaired humoral immunity

hematopoietic system
• show a modest (about 66%) but significant reduction in T cell numbers in the spleen
• numbers of both T and B cells in lymph nodes are about 1.5-fold higher than in wild-type
• observe a 50% reduction in the B220hiIgMlo population in the bone marrow but show normal relative and absolute numbers of B220+ and B200+IgM+ B cells
• relative numbers of IgMhiIgDloCD21hiCD23lo marginal zone B (MZB) cells in the spleen is 1/3 to 1/6 of that seen in wild-type
• under uninduced conditions, observe decreased basal migration, or chemokinesis, of T and B cells in a transwell assay
• marginal zone B cells show substantially enhanced migration in response to serum, both increase in chemokinesis and chemotaxis
• in response to the TXA2 analog U46619 and LPA, both T and B cells show a profound reduction in actin polymerization, however show no differences in platelet shape change or aggregration
• basal proliferation of splenic B cells is normal, however B cell responses to anti-IgM stimulation and lipopolysaccharide are reduced
• B cell proliferation to anti-CD40 and IL-4 is slightly reduced
• basal proliferation of T cells after 2 days of culture in the absence of stimulator cells is increased compared to wild-type cells and after culture, T cells maintain a rate of uninduced proliferation that is higher than wild-type cells
• in the presence of allogenic T cell-depleted splenocytes, T cells do show increased proliferation, indicating that they are able to respond to stimulating cells
• lymph node T cells stimulated with anti-CD3 or ConA show increased basal proliferation compared with wild-type
• exhibit significantly reduced concentrations of IgG1 and IgG3 upon immunization with a thymus dependent or thymus independent antigen and reduced concentrations of IgG2a and IgG2b upon immunization with a thymus dependent antigen
• exhibit significantly reduced concentrations of IgM upon immunization with a thymus dependent or thymus independent antigen

cellular
• basal proliferation of splenic B cells is normal, however B cell responses to anti-IgM stimulation and lipopolysaccharide are reduced
• B cell proliferation to anti-CD40 and IL-4 is slightly reduced
• basal proliferation of T cells after 2 days of culture in the absence of stimulator cells is increased compared to wild-type cells and after culture, T cells maintain a rate of uninduced proliferation that is higher than wild-type cells
• in the presence of allogenic T cell-depleted splenocytes, T cells do show increased proliferation, indicating that they are able to respond to stimulating cells
• lymph node T cells stimulated with anti-CD3 or ConA show increased basal proliferation compared with wild-type





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last database update
10/29/2024
MGI 6.24
The Jackson Laboratory