Mapping Data

Experiment

• Experiment
  TEXT-QTL
• Chromosome
  1
• Reference
  J:61489 Kido Y, et al., Genetic modifiers of the insulin resistance phenotype in mice. Diabetes. 2000 Apr;49(4):589-96
• ID
  MGI:2148498

Genes

Gene	Assay Type
Insq6	visible phenotype
D1Mit19

Notes

• Experiment
  A genome scan with an average marker resolution of 20 cM was conducted on 6 month old male mice from a (C57BL/6 x 129SvIR)F2 intercross to map QTLs affecting susceptibility to hyperinsulinemia. Female mice of either strain do not develop hyperinsulinemia and were excluded from the study. The 129SvIR strain carries a mutation in the insulin receptor gene on chromosome 8 and develops extreme hyperinsulinemia (elevated blood insulin). C57BL/6 does not develop hyperinsulinemia with or without mutation to the insulin receptor gene. The authors mapped 2 major QTLs involved in modulating blood insulin levels: Insq7 on Chromosome 2 spanning 27.6 cM - 42.9 cM (LOD = 5.58 at D2Mit151) and Insq9 on Chromosome 10 spanning 29 cM - 69 cM (LOD = 5.58 at D10Mit42). Also mapped were 3 suggestive QTLs: Insq6 on Chromosome 1 spanning 38.3 cM - 59.7 cM (LOD = 3.58 at D1Mit19), Insq8 on Chromosome 6 at 56.6 cM (LOD = 2.79 at D6Mit201), and Insq10 on Chromosome 12 at 44.1 cM (LOD = 3.11 at D12Mit231). Insq7 on Chromosome 2 and Insq9 on Chromosome 10 span a broad region and may contain multiple genes modulating plasma insulin levels.