NOD.NOR-(Il1a-Pcna)/LtJ

Stock number: 003051
Product name: NOD.NOR-Idd13C
Research areas: Diabetes and Obesity Research

Description

These congenic mice carry a 1.2 cM segment of Chromosome 2 from the NOR/Lt strain that includes the interleukin 1 alpha (Il1a) gene and part of the complex insulin dependent diabetes susceptibility locusIdd13.

Detailed description

At 30 weeks of age, incidence of diabetes among both male and female NOD.NOR-Il1a-Pcna (Idd13^r, Il1a^NOR)mice was significantly lower (for females, 62% vs.100%) than in NOD/Lt mice, but in females was significantly higher (62% vs.16%) than in NOD.NOR-D2Mit490-D2Mit144 (Idd13^r, Il1a^NOR),which carries a larger NOR/Lt-derived segment of Chr 2. By 46 weeks, IDDM incidence in females and males of the former strain had reached 75% and 12%, respectively, of that in control NOD/Lt mice. Thus, NOD.NOR-Il1a-Pcna (Idd13^r, Il1a^NOR)retains the NOR allele(s) for "at least one, but not the complete set" of genes comprising the complex Idd13IDDM susceptibility/resistance locus.

Development

Mice of a congenic strain (at N12) carrying a defined segment of Chr 2 that included the IDDM resistant allele of NOR/Lt at the insulin dependent diabetes susceptibility locus Idd13 were further backcrossed to NOD/Lt. At backcross generation N21, the truncated NOR-derived segment of Chr 2 was fixed to homozygosity in each of three lines by sib mating. NOD.NOR-Il1a-Pcna (Idd13^r , Il1a^NOR) carries a 1.2 cM interval of Chr 2 from NOR/Lt extending from Il1a through Pcna that includes part, but not all, of the complex insulin dependent diabetes susceptibility/resistance locus Idd13. (Serreze et al. (1998) refer to this strain as NOD.Il1-Pcna^NOR .)

Allele

Symbol: Idd13^NOR/Lt
Name: NOR/Lt
MGI accession ID: MGI:3036816
Generation method: QTL
Marker symbol: Idd13
Marker name: insulin dependent diabetes susceptibility 13
Chromosome: 2
Strain of origin: NOR/Lt
Molecular note: This allele confers resistance to insulin dependent diabetes compared to NOD/Lt.

Allele

MGI accession ID: MGI:96542
Marker symbol: Il1a
Marker name: interleukin 1 alpha
Marker synonyms: IL1; IL-1 alpha; Il-1a; IL1-ALPHA; IL1F1; IL-1F1
Chromosome: 2

Allele

MGI accession ID: MGI:97503
Marker symbol: Pcna
Marker name: proliferating cell nuclear antigen
Marker synonyms: ATLD2; Pcna/cyclin; PCNAR
Chromosome: 2