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Phenotypes Associated with This Genotype
Genotype
MGI:3687126
Allelic
Composition
H2-Ab1b-tm1Gru/H2-Ab1b-tm1Gru
Rag1tm1Mom/Rag1tm1Mom
Tg(CD2-CD4,HLA-DQA1,HLA-DQB1)1Ell/Tg(CD2-CD4,HLA-DQA1,HLA-DQB1)1Ell
Genetic
Background
NOD.Cg-Rag1tm1Mom H2-Ab1b-tm1Gru Tg(CD2-CD4,HLA-DQA1,HLA-DQB1)1Ell
Find Mice Using the International Mouse Strain Resource (IMSR)
Mouse lines carrying:
H2-Ab1b-tm1Gru mutation (13 available); any H2-Ab1 mutation (81 available)
Rag1tm1Mom mutation (56 available); any Rag1 mutation (132 available)
Tg(CD2-CD4,HLA-DQA1,HLA-DQB1)1Ell mutation (2 available)
phenotype observed in females
phenotype observed in males
N normal phenotype
cardiovascular system
N
• animals have normal sized hearts, normal ECG, and show no sign of autoimmune pathology
• recipient animals develop cardiomegaly by 12 weeks after transfer
• mice receiving splenic lymphocytes from animals with heart block display first-degree heart block as early as 2 weeks after transfer, with 50% progressing to complete heart block in 8 weeks
• recipient animals develop mononuclear cell infiltrates within heart wall by 12 weeks after transplant
• when young mice receive splenic lymphocytes from older NOD.DQ8/H2Ab-1 mice with heart block, myocarditis is triggered in 100% of recipients

immune system
• recipient animals develop mononuclear cell infiltrates within heart wall by 12 weeks after transplant
• when young mice receive splenic lymphocytes from older NOD.DQ8/H2Ab-1 mice with heart block, myocarditis is triggered in 100% of recipients
• anticardiac myosin autoantibodies reach a titer of 1:10000 in recipient mice at 12 weeks posttransfer
• younger mice receiving splenic lymphocytes from older DQ8 transgenic, H2-Ab1-null mice with heart block develop heart block, myocarditis, and autoantibodies
• when younger mice receive serum from the same older animals, no cardiac pathology is observed
• recipient mice receiving CD4 T cells from older donor animals with heart block develop heart block as early as 4 weeks posttransfer; all animals are diseased by 12 weeks and upon necropsy, heart are enlarged
• mononuclear cells are more numerous and infiltrates more widespread than in animals that receive total splenocytes (containing CD4 T cells) in the myocardium
• disease onset is somewhat accelerated compared to recipients receiving total lymphocytes;

growth/size/body
• recipient animals develop cardiomegaly by 12 weeks after transfer


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
03/25/2025
MGI 6.24
The Jackson Laboratory