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Phenotypes associated with this allele
Allele Symbol
Allele Name
Allele ID
Icostm1Dgry
targeted mutation 1, David Gray
MGI:3719635
Summary 1 genotype
Jump to Allelic Composition Genetic Background Genotype ID
hm1
Icostm1Dgry/Icostm1Dgry B6.129P2-Icostm1Dgry MGI:3720206


Genotype
MGI:3720206
hm1
Allelic
Composition
Icostm1Dgry/Icostm1Dgry
Genetic
Background
B6.129P2-Icostm1Dgry
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Icostm1Dgry mutation (0 available); any Icos mutation (37 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• mice have fewer and smaller germinal centers
• the number of antibody-secreting cells from a secondary response (immunization followed by a booster) is lower in the spleen relative to wild-type mice
• following immunization, the number of antibody-secreting cells in the spleen and bone marrow is increased relative to wild-type mice
• 2 weeks after immunization with alum-precipitated PE, memory B cell numbers are reduced compared to in wild-type mice2 weeks after immunization with alum-precipitated PE, memory B cell numbers are reduced compared to in wild-type mice
• clonal expansion of memory B cells is impaired
• the IgG response to DNP-KLH (dinitrophenyl-keyhole limpet hemacyanin is 2.5-fold lower and 5-fold lower at days 7 and 13, respectively
• DNP-specific IgG1 and IgG2c were markedly reduced while IgG3 and IgG2b levels were reduced less noticeably
in vitro, ovalbumin-primed T cells are unable to help B cells class switch
• 3-fold fewer T cells migrate to the B cell follicle
• reactivation of CD4 T cells is impaired
• expansion of CD4 memory T cells is impaired
• following infection with schiztosome egg antigen or heat-killed Proprionebacterium acnes (PA), dendritic cells produce lower amounts of interleukins 4 and 5
• following infection with schiztosome egg antigen or heat-killed Proprionebacterium acnes (PA), dendritic cells produce lower amounts of interleukins 4 and 5

hematopoietic system
• mice have fewer and smaller germinal centers
• the number of antibody-secreting cells from a secondary response (immunization followed by a booster) is lower in the spleen relative to wild-type mice
• following immunization, the number of antibody-secreting cells in the spleen and bone marrow is increased relative to wild-type mice
• 2 weeks after immunization with alum-precipitated PE, memory B cell numbers are reduced compared to in wild-type mice2 weeks after immunization with alum-precipitated PE, memory B cell numbers are reduced compared to in wild-type mice
• clonal expansion of memory B cells is impaired
• the IgG response to DNP-KLH (dinitrophenyl-keyhole limpet hemacyanin is 2.5-fold lower and 5-fold lower at days 7 and 13, respectively
• DNP-specific IgG1 and IgG2c were markedly reduced while IgG3 and IgG2b levels were reduced less noticeably
in vitro, ovalbumin-primed T cells are unable to help B cells class switch
• 3-fold fewer T cells migrate to the B cell follicle
• reactivation of CD4 T cells is impaired
• expansion of CD4 memory T cells is impaired





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last database update
11/19/2024
MGI 6.24
The Jackson Laboratory