Diverse T cell receptor β gene usage by infiltrating T cells in the lacrimal glands of Sjogren's syndrome

N. Mizushima, K. Kohsaka, K. Tsubota, I. Saito, N. Miyasaka

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

Sjogren's syndrome (SS) is an autoimmune disease characterized by T cell infiltration into the salivary and lacrimal glands (LG). Previous studies on T cell receptor (TCR) usage in the minor salivary glands (SG) have yielded controversial results. We studied TCR β gene usage of the T cells infiltrating to LG, which is the other major target organ of SS. Total RNA was extracted from fresh LG and SG biopsy samples, and peripheral blood mononuclear cells from five SS patients, and converted to cDNA. TCR Vβ gene repertoire was then assessed with quantitative polymerase chain reaction (PCR) assay. Oligoclonality was studied by sequencing V-D-J junctional regions of the PCR products. The TCR Vβ gene usage in LG was diverse in every patient irrespective of disease duration, and similar to that of peripheral lymphocytes from a corresponding patient. The junctional region sequences of over-expressed Vβ families in LG T cells were heterogeneous. We did not find any identical clones shared by LG, SG and peripheral blood. These results showed that the infiltrating T cells in LG of SS patients are polyclonal, and LG and SG do not share the same dominant T cell clonotypes. These suggest that TCR-targeted disease manipulation may have a limited effect on SS.

Original languageEnglish
Pages (from-to)33-38
Number of pages6
JournalClinical and Experimental Immunology
Volume101
Issue number1
Publication statusPublished - 1995 Jan 1
Externally publishedYes

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Keywords

  • Lacrimal gland
  • Sjogren's syndrome
  • T cell clonality
  • T cell receptor

ASJC Scopus subject areas

  • Immunology and Allergy
  • Immunology

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