Two loci on chromosome 15 control experimentally induced arthritis through the differential regulation of IL-6 and lymphocyte proliferation

Tibor T. Glant, S. Szántó, A. Végvári, Z. Szabó, Katalin Kis-Toth, Katalin Mikecz, Vyacheslav A. Adarichev

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Abstract

Using genetic linkage analysis of proteoglycan-induced arthritis (PGIA), a murine model for rheumatoid arthritis, we identified two loci, Pgia8 and Pgia9, on chromosome 15 (chr15) that appear to be implicated in disease susceptibility. Immunization of congenic strains carrying the entire chr15 and separately each of the two loci of DBA/2 arthritis-resistant origin in susceptible BALB/c background confirmed locations of two loci on chr15: the major Pgia9 and lesser Pgia8 locus. Distal part of chr15 (Pgia9) showed a major suppressive effect on PGIA susceptibility in females (40%, p <0.001), whereas the effect of this locus in congenic males was still significant but weaker. Proximal part of chr15 (Pgia8) demonstrated mild and transient effect upon arthritis; this effect was PGIA-promoting in males and suppressive in females. Pgia8 and Pgia9 loci demonstrated an additive mode of inheritance, since when they were both incorporated in consomic chr15 strain, the total effect was a sum of the two loci. Using F2 population of the intercross of wild-type and chr15 consomic strain, we confirmed and refined quantitative trait locus positions and identified a strong correlation between disease susceptibility and lymphocyte-producing cytokines of TNF-α and IL-6. Both Pgia8 and Pgia9 loci on chr15 appear to control IL-6 production in spleen cultures of arthritic mice, providing an important link to the mechanism of autoimmune inflammation.

Original languageEnglish
Pages (from-to)1307-1314
Number of pages8
JournalJournal of Immunology
Volume181
Issue number2
Publication statusPublished - Jul 15 2008

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Chromosomes, Human, Pair 15
Arthritis
Interleukin-6
Lymphocytes
Proteoglycans
Disease Susceptibility
Genetic Linkage
Quantitative Trait Loci
Immunization
Rheumatoid Arthritis
Spleen
Cytokines
Inflammation

ASJC Scopus subject areas

  • Immunology
  • Medicine(all)

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Two loci on chromosome 15 control experimentally induced arthritis through the differential regulation of IL-6 and lymphocyte proliferation. / Glant, Tibor T.; Szántó, S.; Végvári, A.; Szabó, Z.; Kis-Toth, Katalin; Mikecz, Katalin; Adarichev, Vyacheslav A.

In: Journal of Immunology, Vol. 181, No. 2, 15.07.2008, p. 1307-1314.

Research output: Contribution to journalArticle

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AU - Szabó, Z.

AU - Kis-Toth, Katalin

AU - Mikecz, Katalin

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