Mapping myasthenia gravis-associated T cell epitopes on human acetylcholine receptors in HLA transgenic mice

Huan Yang, Elzbieta Goluszko, Chella David, David K. Okita, Bianca Conti-Fine, Teh Sheng Chan, Mathilde A. Poussin, Premkumar Christadoss

Research output: Contribution to journalArticle

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Abstract

Susceptibility to myasthenia gravis (MG) is positively linked to expression of HLA-DQ8 and DR3 molecules and negatively linked to expression of the DQ6 molecule. To elucidate the molecular basis of this association, we have induced experimental autoimmune MG (EAMG) in mice transgenic for HLA-DQ8, DQ6, and DR3, and in DQ8xDQ6 and DQ8xDR3 F1 transgenic mice, by immunization with human acetylcholine receptor (H-AChR) in CFA. Mice expressing transgenes for one or both of the HLA class II molecules positively associated with MG (DQ8 and DR3) developed EAMG. T cells from DQ8 transgenic mice responded well to three cytoplasmic peptide sequences of H-AChR (α320-337, α304-322, and α419-437), of which the response to α320-337 was the most intense. DR3 transgenic mice also responded to this sequence very strongly. H-AChR- and α320-337 peptide-specific lymphocyte responses were restricted by HLA class II molecules. Disease resistance in DQ6 transgenic mice was associated with reduced synthesis of anti-AChR IgG, IgG2b, and IgG2c Ab's and reduced IL-2 and IFN-γ secretion by H-AChR- and peptide α320-337-specific lymphocytes. Finally, we show that DQ8 imparts susceptibility to EAMG and responsiveness to an epitope within the sequence α320-337 as a dominant trait.

Original languageEnglish (US)
Pages (from-to)1111-1120
Number of pages10
JournalJournal of Clinical Investigation
Volume109
Issue number8
DOIs
StatePublished - 2002

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T-Lymphocyte Epitopes
Myasthenia Gravis
Cholinergic Receptors
Transgenic Mice
HLA-DR3 Antigen
Peptides
Autoimmune Experimental Myasthenia Gravis
Lymphocytes
Disease Resistance
Transgenes
Interleukin-2
Epitopes
Immunization
T-Lymphocytes

ASJC Scopus subject areas

  • Medicine(all)

Cite this

Yang, H., Goluszko, E., David, C., Okita, D. K., Conti-Fine, B., Chan, T. S., ... Christadoss, P. (2002). Mapping myasthenia gravis-associated T cell epitopes on human acetylcholine receptors in HLA transgenic mice. Journal of Clinical Investigation, 109(8), 1111-1120. https://doi.org/10.1172/JCI200214255

Mapping myasthenia gravis-associated T cell epitopes on human acetylcholine receptors in HLA transgenic mice. / Yang, Huan; Goluszko, Elzbieta; David, Chella; Okita, David K.; Conti-Fine, Bianca; Chan, Teh Sheng; Poussin, Mathilde A.; Christadoss, Premkumar.

In: Journal of Clinical Investigation, Vol. 109, No. 8, 2002, p. 1111-1120.

Research output: Contribution to journalArticle

Yang, H, Goluszko, E, David, C, Okita, DK, Conti-Fine, B, Chan, TS, Poussin, MA & Christadoss, P 2002, 'Mapping myasthenia gravis-associated T cell epitopes on human acetylcholine receptors in HLA transgenic mice', Journal of Clinical Investigation, vol. 109, no. 8, pp. 1111-1120. https://doi.org/10.1172/JCI200214255
Yang, Huan ; Goluszko, Elzbieta ; David, Chella ; Okita, David K. ; Conti-Fine, Bianca ; Chan, Teh Sheng ; Poussin, Mathilde A. ; Christadoss, Premkumar. / Mapping myasthenia gravis-associated T cell epitopes on human acetylcholine receptors in HLA transgenic mice. In: Journal of Clinical Investigation. 2002 ; Vol. 109, No. 8. pp. 1111-1120.
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