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Phenotypes Associated with This Genotype
Genotype
MGI:3652749
Allelic
Composition
Dapp1Gt(OST111213)Lex/Dapp1Gt(OST111213)Lex
Genetic
Background
B6.Cg-Dapp1Gt(OST111213)Lex
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Dapp1Gt(OST111213)Lex mutation (0 available); any Dapp1 mutation (28 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• Dapp1-deficient B cell proliferation is reduced by 50% compared to wild-type B cells in response to BCR crosslinking; this decrease is limited to signaling by the BCR since stimulation with other B cell mitogens such as anti-CD40 or LPS results in normal or enhanced mutant B cell proliferation
• null mice display defective responses to T cell independent type II antigens like TNP-Ficoll; production of IgG3 is markedly reduced
• vaccination of Dapp1-deficient mice with capsular polysaccharide from S. pneumoniae results in production of type 3 polysaccharide-specific IgM antibodies but failure to produce of type 3 polysaccharide-specific IgG3 antibodies
• wild-type mice vaccinated with live S. pneumoniae via IP injection show100% survival but all vaccinated Dapp1-deficient die

hematopoietic system
• Dapp1-deficient B cell proliferation is reduced by 50% compared to wild-type B cells in response to BCR crosslinking; this decrease is limited to signaling by the BCR since stimulation with other B cell mitogens such as anti-CD40 or LPS results in normal or enhanced mutant B cell proliferation
• vaccination of Dapp1-deficient mice with capsular polysaccharide from S. pneumoniae results in production of type 3 polysaccharide-specific IgM antibodies but failure to produce of type 3 polysaccharide-specific IgG3 antibodies

cellular
• Dapp1-deficient B cell proliferation is reduced by 50% compared to wild-type B cells in response to BCR crosslinking; this decrease is limited to signaling by the BCR since stimulation with other B cell mitogens such as anti-CD40 or LPS results in normal or enhanced mutant B cell proliferation


Contributing Projects:
Mouse Genome Database (MGD), Gene Expression Database (GXD), Mouse Models of Human Cancer database (MMHCdb) (formerly Mouse Tumor Biology (MTB)), Gene Ontology (GO)
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last database update
03/31/2026
MGI 6.24
The Jackson Laboratory