Cia45^BALB/c
QTL Variant Detail

Summary

• QTL variant: Cia45^BALB/c
• Name: collagen induced arthritis QTL 45; BALB/c
• MGI ID: MGI:5635540
• QTL: Cia45 Location: unknown Genetic Position: Chr9, Syntenic

Variant origin

• Strain of Specimen: BALB/c

Variant description

• Allele Type: QTL

Notes

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

J:89536

Linkage analysis at an average resolution of 10 cM was performed on 3 separate mouse crosses to map QTLs associated with proteoglycan-induced arthritis (PGIA) and collagen-induced arthritis (CIA).

559 (BALB/c x DBA/2)F2 MHC-matched animals and 402 (BALB/c x DBA/1J)F2 MHC-unmatched animals were analyzed for linkage to PGIA.

537 (BALB/c x DBA/1J)F2 animals were analyzed for linkage to CIA. With respect to PGIA, parental strain BALB/c is highly susceptible whereas parental strains DBA/2 and DBA/1J are fully resistant. As expected, (BALB/c x DBA/2)F1 hybrids are resistant to PGIA, but interestingly (BALB/c x DBA/1J)F1 hybrids are susceptible to PGIA. This is unusual because the BALB/c allele typically exhibits recessive susceptibility to disease, but this isnot the case with the cross to DBA/1J.

With respect to CIA, parental strain DBA/1J is highly susceptible whereas parental strains BALB/c and DBA/2 are fully resistant. All F1s exhibited susceptibility to CIA.

Cia45 mapped to the distal half of mouse Chromosome 9 in association with CIA susceptibility and onset (LOD=4.5) in the MHC-unmatched (BALB/c x DBA/1J)F2 population.

This QTL overlaps with Pgia5.

References

• Original: J:89536 Glant TT, et al., Disease-associated qualitative and quantitative trait loci in proteoglycan-induced arthritis and collagen-induced arthritis. Am J Med Sci. 2004 Apr;327(4):188-95
• All: 1 reference(s)