TCRζ mRNA with an alternatively spliced 3′-untranslated region detected in systemic lupus erythematosus patients leads to the down-regulation of TCRζ and TCR/CD3 complex

Kensei Tsuzaka, Izumi Fukuhara, Yumiko Setoyama, Keiko Yoshimoto, Katsuya Suzuki, Tohru Abe, Tsutomu Takeuchi

研究成果: Article査読

49 被引用数 (Scopus)

抄録

The reduction or absence of TCR ζ-chain (ζ) expression in systemic lupus erythematosus (SLE) patients is thought to be related to the pathogenesis of SLE. Recently, we reported the predominant expression of ζ mRNA containing an alternatively spliced 3′-untranslated region (3′UTR; ζmRNA/as-3′UTR) and a reduction in the expression of ζ mRNA containing the wild-type 3′UTR (ζmRNA/w-3′UTR) in T cells from SLE patients. Here we show that AS3′UTR mutants (MA5.8 cells deficient in ζ protein that have been transfected with ζmRNA/as-3′UTR) exhibit a reduction in the expression of TCR/CD3 complex and ζ protein on their cell surface as well as a reduction in the production of IL-2 after stimulation with anti-CD3 Ab compared with that in wild-type 3′UTR mutants (MA5.8 cells transfected with ζmRNA/w-3′UTR). Furthermore, the real-time PCR analyses demonstrated that the half-life of ζmRNA/as-3′UTR in AS3′UTR mutants (3 h) was much shorter than that of ζmRNA/w-3′UTR in wild-type 3′UTR mutants (15 h). Thus, the lower stability of ζmRNA/as-3′UTR, which is predominant in SLE T cells, may be responsible for the reduced expression of the TCR/CD3 complex, including ζ protein, in SLE T cells.

本文言語English
ページ(範囲)2496-2503
ページ数8
ジャーナルJournal of Immunology
171
5
DOI
出版ステータスPublished - 2003 9 1
外部発表はい

ASJC Scopus subject areas

  • 免疫アレルギー学
  • 免疫学

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