A novel H2A-E+ transgenic model susceptible to human but not mouse thyroglobulin-induced autoimmune thyroiditis: Identification of mouse pathogenic epitopes

Nicholas K. Brown, Daniel J. McCormick, Vladimir Brusic, Chella S. David, Yi chi M. Kong

Research output: Contribution to journalArticle

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Abstract

The A-E+ transgenic mouse is highly susceptible to human thyroglobulin (hTg)-induced thyroiditis, but strongly tolerant to a challenge by mouse thyroglobulin (mTg), in stark contrast to traditionally susceptible strains, wherein mTg induces stronger thyroiditis. To identify mouse thyroid epitopes recognized by destructive, hTg-primed T cells, we selected the three hTg epitopes known to be presented by H2Eb, as the basis for synthesizing potential mTg epitopes. One 15-mer peptide, mTg409, did prime T cells, elicit Ab, and induce thyroiditis. Moreover, cells primed with corresponding, pathogenic hTg410 cross-reacted with mTg409, and vice versa. mTg409 contained 4/4 anchor residues, similar to the corresponding hTg peptide. Based on this finding, a second mTg epitope, mTg179, was subsequently identified. These mTg autoepitopes, identified by using thyroiditogenic hTg epitopes, help to explain the severe thyroiditis seen in this novel A-E+ transgenic model.

Original languageEnglish (US)
Pages (from-to)1-7
Number of pages7
JournalCellular Immunology
Volume251
Issue number1
DOIs
StatePublished - Apr 15 2008

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Keywords

  • Autoimmunity
  • Class II transgene
  • Experimental autoimmune thyroiditis
  • H2E transgene
  • Thyroglobulin epitopes

ASJC Scopus subject areas

  • Immunology

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