Identification of Th2-type suppressor T cells among in vivo expanded ocular T cells in mice with experimental autoimmune uveoretinitis

Hiroshi Keino, M. Takeuchi, J. Suzuki, S. Kojo, J. Sakai, K. Nishioka, T. Sumida, M. Usui

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

Experimental autoimmune uveoretinitis (EAU), which is a T cell mediated organ specific autoimmune disease, is induced by immunization with interphotoreceptor retinoid binding protein (IRBP) in susceptible strains of mice. It has been found that IRBP-derived peptide 518-529 (p518-529) generates Th2-type responses and inhibits IRBP-induced EAU, indicating that the p518-529 might be an epitope for suppressor T cells in IRBP-induced EAU. First, we observed that there were T cells producing the Th2 type cytokines such as IL-4 and IL-10 in late phase of EAU. Furthermore, to examine whether p518-529-reactive T cells expand in the eye during EAU, T cell receptor (TCR) of ocular T cells was compared with that of p518-529 reactive T cells in spleen from mice with EAU by PCR-single strand conformation polymorphism (PCR-SSCP) and nucleotide sequence analysis. SSCP and sequence analyses indicated that p518-529 reactive TCR BV10+ T cells bearing amino acid motif(PWG) and TCR BV13+ T cells bearing amino acid motif(PGLGGY) in their complementary-determining region 3 (CDR3) region were clonally expanding in ocular tissues on day 28 after immunization, although these T cells were not detected on day 14. These findings demonstrate that p518-529 reactive Th2-type T cells expand oligoclonally in the uveitic eyes in the late stage of EAU and may function as Th2-type suppressor T cells for improvement of the disease.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalClinical and Experimental Immunology
Volume124
Issue number1
DOIs
Publication statusPublished - Jun 6 2001
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Immunology and Allergy
  • Immunology

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