Vaccination with autoreactive CD4+Th1 clones in lupus-prone MRL/Mp-Faslpr/lpr mice

• 藤井, 隆夫

• Okada, Masato

• Fujita, Yoshimasa

• Sato, Takeshi

• Tanaka, Masao

• Usui, Takashi

• Umehara, Hisanori

• Mimori, Tsuneyo

抄録

We studied the efficacy of T cell vaccination with CD4+αβTh1 clones in lupus-prone MRL/Mp-Faslpr/lpr (MRL/lpr) mice. CD4+αβ Th1 clones, dna51 (Vβ8.3) and rnp2 (Vβ14), which stimulated anti-dsDNA or U1 ribonucleoprotein (U1RNP) antibody (Ab) production respectively, were isolated from splenocytes of MRL/lpr mice. Antinuclear Ab kinetics, renal function, renal histology, survival rate, and lymphocyte subpopulations in the spleen were monitored after intravenous adoptive transfer of IL-2-stimulated (s-) or irradiated (i-) clones to 3 week-old female MRL/lpr mice. Anti-idiotypic humoral and T cell responses against the transferred autoreactive Th1 clones were determined in parallel. Compared with PBS-treated MRL/lpr mice, anti-dsDNA Ab titers, and the activity index for lupus nephritis were all decreased in MRL/lpr mice vaccinated with i-dna51 cells, whereas survival rate was not improved. The numbers of CD4+Vβ8.3 T cells in the spleen were also significantly decreased in these mice. Anti-idiotypic Abs recognizing a 12 amino acid sequence of clone dna51 T cell receptor Vβ8.3-complementarity-determining region (CDR) 3 were detected in the MRL/lpr mice that received i-dna51 or s-dna51 cells. These Abs suppressed dna51 cell proliferation, as well as cytotoxicity of CD8+T cells against dna51. The present study suggests that vaccination with CD4+αβTh1 clone, dna51, elicits anti-idiotypic T cell and humoral responses against dna51 in MRL/lpr mice, although the immunoregulatory effects on lupus may be limited.

収録刊行物

• Journal of Autoimmunity

  Journal of Autoimmunity 33 (2), 125-134, 2009-09

  Elsevier

詳細情報

• CRID: 1050001201692463872
• NII論文ID: 120001596907
• ISSN: 08968411
• HANDLE: 2433/85221
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles