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Immunogenetics. 1997;46(4):312-7.

Role of mouse and human class II transgenes in susceptibility to and protection against mouse autoimmune thyroiditis.

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  • 1Department of Immunology and Microbiology, Wayne State University School of Medicine, 540 E. Canfield Avenue, Detroit, MI 48201, USA.

Erratum in

  • Immunogenetics 1997;46(5):448.


Mouse experimental autoimmune thyroiditis (EAT), a model for Hashimoto's thyroiditis, is induced by immunizing with mouse thyroglobulin (MTg). To study the extent of H2A involvement in EAT, we introduced AaAb genes from susceptible k mice into resistant or intermediately susceptible strains which do not express H2E molecules. Thyroiditis was severe in resistant B10.M (H2(f)) mice carrying the double transgene AakAbk. Likewise, thyroid infiltration was significantly extended in intermediate B10.Q (H2(q)) mice with the same transgene. To examine the effect of H2E molecules in the presence of H2A-mediated susceptibility, we introduced an Eak transgene into E- B10.S mice to express the Ebetas molecule and observed significant reduction in EAT severity in B10.S(E+) mice. On the other hand, the presence of an Ebd transgene in B10.RQB3 (H2Aq) mice resulting in the expression of H2Ebetad molecules did not alter EAT susceptibility, suggesting a role for Eb gene polymorphism in protection against EAT. We have shown recently that the HLA-DRB1(*)0301 (DR3) transgene conferred EAT susceptibility to B10. M as well as class II-negative B10.Ab0 mice. However, we report here that the HLA-DQB1(*)0601 (DQ6b) transgene in B10.M or HLA-DQA1(*)0301/DQB1(*)0302 (DQ8) transgene in class II-negative Ab0 mice did not. These studies show the differential effects of class II molecules on EAT induction. Susceptibility can be determined when class II molecules from a single locus, H2A or HLA-DQ, are examined in transgenic mice, but the overall effect may depend upon the presence of both class II molecules H2A and H2E in mice and HLA-DQ and HLA-DR in humans.

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