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Phenotypes Associated with This Genotype
Genotype
MGI:3809643
Allelic
Composition
Myd88tm1Defr/Myd88tm1Defr
Tg(Itgax-cre)1-1Reiz/0
Genetic
Background
B6.Cg-Myd88tm1Defr Tg(Itgax-cre)1-1Reiz
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
Myd88tm1Defr mutation (4 available); any Myd88 mutation (50 available)
Tg(Itgax-cre)1-1Reiz mutation (4 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
immune system
• dendritic cell maturation mediated by injections of TLR9 agonists is diminished in these mice
• maturation markers on DCs such as I-Ab, CD80, and CD86 have several fold lower expression than in controls
• less Th1 T cells develop when nave antigen-specific T cells are transferred into these mice with cognate antigen and a TLR9 agonist
• antigen specific IgG1 levels are lower by almost an order of magnitude compared to controls after immunization with OVA-peptide and TLR9 agonist
• antigen specific IgG2b levels are lower by an order of magnitude compared to controls after immunization with OVA-peptide and TLR9 agonist
• antigen specific IgG2c levels are lower by several orders of magnitude than controls after immunization with OVA-peptide and TLR9 agonist
• NK cells in vivo make much several fold less IFN-gamma in response to injections of TLR9 agonists
• there is also a reduction in IFN-gamma production upon LPS administration
• mice fail to make IL-12p40 in response to the TLR9 agonist CpG-containing oligodeoxynucleotide ODN1826
• IL-12p40 production is reduced 5- to 30- fold in response to agonists to TLR1 +TLR2, TLR4, TLR5, TLR7, or TLR9
• circulating levels of IL-6 one hour after TLR9 stimulation is half that in wild-type controls
• DCs fail to secrete cytokines in response to TLR9 agonists
• nave antigen-specific T cells expand at a much slower rate when transferred into these mice with cognate antigen and TLR9 agonist

homeostasis/metabolism
• mice fail to make IL-12p40 in response to the TLR9 agonist CpG-containing oligodeoxynucleotide ODN1826
• IL-12p40 production is reduced 5- to 30- fold in response to agonists to TLR1 +TLR2, TLR4, TLR5, TLR7, or TLR9
• circulating levels of IL-6 one hour after TLR9 stimulation is half that in wild-type controls

hematopoietic system
• dendritic cell maturation mediated by injections of TLR9 agonists is diminished in these mice
• maturation markers on DCs such as I-Ab, CD80, and CD86 have several fold lower expression than in controls
• less Th1 T cells develop when nave antigen-specific T cells are transferred into these mice with cognate antigen and a TLR9 agonist
• antigen specific IgG1 levels are lower by almost an order of magnitude compared to controls after immunization with OVA-peptide and TLR9 agonist
• antigen specific IgG2b levels are lower by an order of magnitude compared to controls after immunization with OVA-peptide and TLR9 agonist
• antigen specific IgG2c levels are lower by several orders of magnitude than controls after immunization with OVA-peptide and TLR9 agonist
• NK cells in vivo make much several fold less IFN-gamma in response to injections of TLR9 agonists
• there is also a reduction in IFN-gamma production upon LPS administration

cellular
• dendritic cell maturation mediated by injections of TLR9 agonists is diminished in these mice
• maturation markers on DCs such as I-Ab, CD80, and CD86 have several fold lower expression than in controls


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
04/16/2024
MGI 6.23
The Jackson Laboratory