J Jpn Coll Angiol, 2009, 49: collagen disease, genetic polymorphism, MRL mice, recombinant inbred strains, Cd72. MRL/Mp-lpr/lpr MRL/ lpr

Transcription

1 Online publication June 24, , 2 1 J Jpn Coll Angiol, 2009, 49: collagen disease, genetic polymorphism, MRL mice, recombinant inbred strains, Cd72 SNPs case-control study MHC Fcγ NO MRL/Mp-lpr/lpr MRL/ lpr MRL/lpr CD4 Jackson Murphy ED MRL THE JOURNAL of JAPANESE COLLEGE of ANGIOLOGY Vol. 49,

2 1 3 4 lymphoproliferation, lpr CD4 - CD8 - B220 + T MRL/lpr lpr 1992 lpr Fas 2 2 Fas T B T Fas ligand Fas lpr lpr C3H/lpr B6/lpr DNA 3, 4 lpr lymphoproliferation lpr MRL 10 lpr Fas MRL MRL 3 IL-1Ra BALB/c B6 5, 6 PD-1 B6 BALB/c NOD 7 9 MRL/lpr MRL/lpr C3H/lpr N2 F2 4 N2 recombinant congenic McH5/lpr 10 MRL/lpr C3H/lpr recombinant inbred RI MxH/lpr 15 Fig. 1 Fig. 2 RI MRL/lpr Vol. 49, 2009

3 1 Figure 1 Principle for the establishment of recombinant inbred (RI) strains of mice MXH/lpr. Genomic components of RI strains are composed of the genome of the parental strains, a collagen disease-prone strain MRL/lpr, and a resistant strain, C3H/lpr, in a mosaic form with homozygote. Figure 2 Genetic dissociation of the pathological manifestations and autoantibodies of collagen disease among the recombinant inbred strains MXH/lpr. MRL/lpr MRL/lpr MRL/lpr C3H/lpr F1 MRL/lpr C3H/ lpr F2 QTL Table 1 3 Autoimmune renal vasculitis in MRL mice 1 (Arvm1) Arvm2 MRL D3Mit42 Arvm3 11 Fig Arvm1 Arvm2 79 Arvm3 3 MRL/lpr 12 Table 1 4 Arvm1 Autoimmune aortitis in MRL mice 1 (Aaom1) Arvm2 Arvm3 Autoimmune extremity vasculitis 1(Aevm1) Aevm2 8 Vol. 49,

4 Table 1 Collagen disease-susceptibility loci defined in analyses of MRL/lpr (MRL/lpr C3H/lpr) F1 and (MRL/lpr C3H/lpr) F2 mice Lesion Symbol Name MGI: ID Chr Position Vasculitis Arvm1 autoimmune renal vasculitis in MRL mice 1 MGI: cm Arvm2 autoimmune renal vasculitis in MRL mice 2 MGI: cm Arvm3 autoimmune renal vasculitis in MRL mice cm Aaom1 autoimmune aortitis in MRL mice 1 MGI: cm Aevm1 autoimmune extremity vasculitis in MRL mice 1 MGI: cm Aevm2 autoimmune extremity vasculitis in MRL mice 2 MGI: cm Glomerulo- Agnm1 autoimmune glomerulonephritis in MRL mice 1 MGI: cm nephritis Agnm2 autoimmune glomerulonephritis in MRL mice 2 MGI: cm Agnm3 autoimmune glomerulonephritis in MRL mice 3 MGI: cm Arthritis Paam1 progression of autoimmune arthritis in MRL mice 1 MGI: cm Paam2 progression of autoimmune arthritis in MRL mice 2 MGI: cm Paam3 progression of autoimmune arthritis in MRL mice cm Paam4 progression of autoimmune arthritis in MRL mice cm Paam5 progression of autoimmune arthritis in MRL mice cm Artmd1 arthropathy in MRL and DBA/1 mice 1 MGI: cm Artmd2 arthropathy in MRL and DBA/1 mice 2 MGI: cm Sialoadenitis Asm1 autoimmune sialoadenitis in MRL mice 1 MGI: cm Asm2 autoimmune sialoadenitis in MRL mice 2 MGI: cm Asm3 autoimmune sialoadenitis in MRL mice cm Asm4 autoimmune sialoadenitis in MRL mice cm MGI: Mouse Genome Informatics: 33 cm 5 65 cm MRL/lpr C3H/lpr F2 QTL 3 Table 1 Agnm(autoimmune glomerulonephritis in MRL mice)1 Agnm2 Agnm3 13 MRL Agnm1 Agnm2 Arvm1 Arvm2 Figure 3 An additive and hierarchical effect among the susceptibility loci to vasculitis in the kidneys. Combination of the loci with susceptible genotypes (Arvm1; MRL/MRL, Arvm2; MRL/MRL, Arvm3; MRL/C3H) regulates the incidence of vasculitis (%). 14 Vol. 49, 2009

5 1 Fig. 4 Cd72 Arvm1 Agnm1 Cd72 CD72 B II ITIM immunoreceptor tyrosine-based inhibition motif CD72 B mrna MRL C3H alternative splicing MRL exon 7 3 exon exon 8 inton 7/exon 8 junction DNA AG CT AG splice site 21 MRL Cd72 ITIM 2 CD72 Mather 1949 MRL Figure 4 Possibly common susceptibility loci to renal vasculitis and glomerulonephritis. Map positions of two of three susceptibility loci to renal vasculitis on chromosome 4, Arvm1 and Arvm2, are much closer to two of those to glomerulonephritis, Agnm1 and Agnm2, respectively. This means that these loci may be common to both disease phenotypes or have a high linkage value. 1 Murphy ED, Roths JB: Autoimmunity and lymphoproliferation: Induction by mutant gene lpr, and acceleration by a male-associated factor in strain BXSB mice. In: Rose NR, Bigazzi PE, Werner Nl, eds. Genetic Control of Autoimmune Disease. Elsevier North Holland Inc., New York, 1978, Watanabe-Fukunaga R, Brannan CI, Copeland NG et al: Lymphoproliferation disorder in mice explained by defects in Fas antigen that mediates apotosis. Nature, 1992, 356: Nose M, Nishimura M, Kyogoku M: Analysis of granulomatous arteritis in MRL/Mp autoimmune disease mice bearing lymphoproliferative genes. The use of mouse genetics to dissociate the development of arteritis and glomerulonephritis. Am J Pathol, 1989, 135: Nose M: Genetic basis of vasculitis in lupus mice. In: Tanabe T, ed. Intractable Vasculitis Syndromes. Hokkaido University Press, Hokkaido, 1993, Horai R, Saijo S, Tanioka H et al: Development of chronic inflammatory arthropathy resembling rheumatoid arthritis in interleukin 1 receptor antagonist-deficient mice. J Exp Med, 2000, 191: Nicklin MJ, Hughes DE, Barton JL et al: Arterial inflammation in mice lacking the interleukin 1 receptor antagonist gene. J Exp Med, 2000, 191: Nishimura H, Okazaki T, Tanaka Y et al: Autoimmune dilated cardiomyopathy in PD-1 receptor-deficient mice. Sci- Vol. 49,

6 ence, 2001, 291: Nishimura H, Nose M, Hiai H et al: Development of lupuslike autoimmune diseases by disruption of the PD-1 gene encoding an ITIM motif-carrying immunoreceptor. Immunity, 1999, 11: Wang J, Yoshida T, Nakaki F et al: Establishment of NOD- Pdcd1-/- mice as an efficient animal model of type I diabetes. Proc Natl Acad Sci U S A, 2005, 102: Nose M, Nishimura M, Ito MR et al: Arteritis in a novel congenic strain of mice derived from MRL/Lpr lupus mice: genetic dissociation from glomerulonephritis and limited autoantibody production. Am J Pathol, 1996, 149: Qu WM, Miyazaki T, Terada M et al: Genetic dissection of vasculitis in MRL/lpr lupus mice: a novel susceptibility locus involving the CD72c allele. Eur J Immunol, 2000, 30: Yamada A, Miyazaki T, Lu LM et al. Genetic basis of tissue specificity of vasculitis in MRL/lpr mice. Arthritis Rheum, 2003, 48: Miyazaki T, Ono M, Qu WM et al: Implication of allelic polymorphism of osteopontin in the development of lupus nephritis in MRL/lpr mice. Eur J Immunol, 2005, 35: Genomics of Vasculitis: Lessons from Mouse Models Masato Nose 1, 2 and Hiroaki Komori 1 1 Department of Pathogenomics, Ehime University Graduate School of Medicine, Ehime, Japan 2 Department of Immunopathology, Ehime Proteo-Medicine Research Center, Ehime, Japan collagen disease, genetic polymorphism, MRL mice, recombinant inbred strains, Cd72 A genome analysis of mouse models may shed some light on the complex clinicopathological manifestations of systemic vasculitis. In the study of susceptibility loci to vasculitis in MRL mouse models, we learned that systemic vasculitis developed through the cumulative effect of multiple gene loci, each of which by itself did not have a significant effect in inducing the related phenotype, thus indicating a polygenic system. The mice developed vasculitis in an additive manner with a hierarchical effect. Some of the susceptibility loci seemed to be common to those in other collagen diseases as well. Moreover, the loci controlling tissue specificity of vasculitis were present. One of the positional candidate genes for vasculitis showed an allelic polymorphism in the coding region, thus possibly causing a qualitative difference in its function. As a result, a particular combination of polygenes with such an allelic polymorphism may thus play a critical role in leading the cascade reaction to develop vasculitis, and also a regular variation of systemic vasculitis. This is designated as the polygene network in systemic vasculitis. (J Jpn Coll Angiol, 2009, 49: 11 16) Online publication June 24, Vol. 49, 2009