Ath16^C57BL/6J
QTL Variant Detail

Summary

• QTL variant: Ath16^C57BL/6J
• Name: atherosclerosis 16; C57BL/6J
• MGI ID: MGI:2386549
• QTL: Ath16 Location: Chr19:42426917-42427005 bp Genetic Position: Chr19, cM position of peak correlated region/allele: 33.03 cM
• QTL Note: genome coordinates based on the marker associated with the peak LOD score

Variant origin

• Strain of Specimen: C57BL/6J

Variant description

• Allele Type: QTL
• Mutation: Undefined
• This allele confers decreased aortic lesion size compared to FVB/NCr.
• Inheritance: Recessive

Expression

In Structures Affected by this Mutation:

1 anatomical structure(s)

Notes

Mapping and Phenotype information for this QTL, its variants and associated markers

J:76127

Two independent strain intercosses that carry atherosclerosis phenotype-sensitizing Apoe deficiency were performed to reveal artherosclerosis susceptibility loci that are distinct from loci linked to lipoprotein levels.

Animals from a C57BL/6J-derived background are susceptible to atherosclerosis and yield several-fold higher aortic lesion scores compared to animals from an FVB/NCr-derived background.

In the first cross, referred to as cross 1, B6.129P2-Apoe^tm1Unc x FVB.129P2-Apoe^tm1Bres F1 mice were crossed and the F1 offspring were intercrossed to create 197 (B6.129P2-Apoe^tm1Unc x FVB.129P2-Apoe^tm1Bres) F2 mice for the QTL analysis. Interval mapping was done with 194 markers at a distance of no more than 10cM.

In the second, confirmatory cross, B6.129P2-Apoe^tm1Unc x FVB.129P2-Apoe^tm1Bres F1 mice were crossed and the F1 offspring were intercrossed to create 186 (B6.129P2-Apoe^tm1Unc x FVB.129P2-Apoe^tm1Bres)F2 mice for QTL analysis. This cross was referred to as cross 2; these mice were genotyped using 127 markers at no more than 10cM intervals.

A QTL observed on Chr 19 in cross 1 but not in cross 2 has been named Ath16. Single marker and interval mapping revealed a peak at D19Mit120 (LOD 3.8 in male F2 mice, no linkage was found in female mice on chromosome 19). FVB/NCr-derived alleles confer increased lesion size in a dominant manner at this locus.

Ath16 is evolutionarily conserved with human chromosomal regions 9q12-21, 9q24 and 10q23-26. Possible candidate genes for Ath16 areVldlr, Fgf8, Csf2ra, and Prdx3.

References

• Original: J:76127 Dansky HM, et al., A phenotype-sensitizing apoe-deficient genetic background reveals novel atherosclerosis predisposition Loci in the mouse. Genetics. 2002 Apr;160(4):1599-608
• All: 1 reference(s)