Mapping Data

Experiment

• Experiment
  TEXT-QTL
• Chromosome
  7
• Reference
  J:13557 Ghosh S, et al., Polygenic control of autoimmune diabetes in nonobese diabetic mice. Nat Genet. 1993 Aug;4(4):404-9
• ID
  MGI:3036792

Genes

Gene	Assay Type
Idd7	resistance/susceptibility
D7Nds6	PCR amplified length variant

Notes

• Experiment
  123 polymorphic markers were screened in a backcross population of NOD/Lt x (B10.NOD-H2^g7 x NOD/Lt)F1 animals to identify QTLs associated with susceptibility to insulin dependent (type 1) diabetes. 106 diabetic backcross animals and 190 non-diabetic backcross animals were used in this study. Parental strain NOD/Lt spontaneously develops type 1 diabetes whereas parental strain B10.NOD-H2^g7 is resistant.
  
  Three novel diabetes susceptibility QTLs were identified. Idd7 mapped to 4.5 cM on mouse Chromosome 7 near D7Nds6, Idd8 mapped to 2.5 cM on mouse Chromosome 14 near D14Nds1, and Idd10 mapped to 45 cM on mouse chromosome 3 near D3Nds7, D3Nds11, and D3Nds8. Idd7 and Idd8 are associated with insulitis and diabetes susceptibility. Homozygosity for NOD/Lt-derived alleles confers resistance to diabetes at Idd7 and Idd8 indicating a dominant susceptible effect of the C57BL/10-derived allele. Idd10 also shows linkage to insulitis and diabetes susceptibility.
  
  Several previously identified QTLs were detected in this study:
  Idd3 mapped to 28 cM on mouse Chromosome 3 near D3Nds1 in linkage to diabetes susceptibility and insulitis. Sequence analysis of candidate gene Il2 revealed several amino acid difference between NOD/Lt and C57BL/10.
  Idd4 mapped to 43.8 cM onmouse Chromosome 11 near D11Nds1 in linkage to diabetes susceptibility.
  Idd5 mapped to 19.5 cM on mouse Chromosome 1 near D1Nds6 in linkage to diabetes susceptibility and insulitis.
  Idd6 mapped to 71.2 cM on mouse Chromosome 6 near D6Mit14 in linkage to diabetes susceptibility.