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2005 Fiscal Year Final Research Report Summary

Analysis of Regulation of FOXP3 expression and induction of regulatory T cells for therapeutic application to autoimmune diseases.

Research Project

Project/Area Number 16591002
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 膠原病・アレルギー・感染症内科学
Research InstitutionUniversity of Occupational and Environmental Health

Principal Investigator

SAITO Kazuyoshi  University of Occupational and Environmental Health, School of Medicine, associate professor, 医学部, 助教授 (30279327)

Co-Investigator(Kenkyū-buntansha) TANAKA Yoshiya  University of Occupational and Environmental Health, School of Medicine, professor, 医学部, 教授 (30248562)
Project Period (FY) 2004 – 2005
Keywordsregulatory T lymphocyte / autoimmune / FOXP-3 / CD4 / CD25
Research Abstract

Recent studies have emphasized the importance of T cells with regulatory/suppressor properties in controlling autoimmune diseases. CD4(+) CD25(+) regulatory T(T(reg)) cells play a critical role in the maintenance of peripheral tolerance and the prevention of autoimmunity. We developed anti-FOXP3 polyclonal and employed western blotting analysis and flowcytometric analysis using mononuclear cells from autoimmune diseases.
1.We have explored the characteristics of CD4(+) CD25(+) T(reg) cells or FOXP3 positive cells in patients with rheumatoid arthritis (RA) and systemic lupus erythematosus (SLE). The frequency and phenotype of CD4(+) CD25(+) T cells as well as FOXP3 positive cells in peripheral blood (PB) from patients with RA, SLE and PBMC from normal controls were analyzed. An decreased frequency of CD4+ T cells expressing CD25 or FOP3 were detected in PB from patients with RA and SLE compared with that in healthy donor.
2.We transfected FOXP3 expression vectors to COST cells by lipofection and peripheral lymphocytes using nucleofector. Then expression of FOXP3 protein in both cells were confirmed by western blotting as well as by FACScan analysis.
3.We also investigate the effect of cytokines or viral protein including human T lymphocytic leukemia virus tax p40 and cytomegalovirus early antigen-on expression of FOXP3 gene. We co-transfecto FOXP3 expression vector and luciferase reporter vector, which was ligated with 3 times tandem repeats of FOXP3 binding sequences to peripheral lymphocytes using nucleofector. Co-transfection of FOXP3 did not induce luciferase activities even in the presence of cytokines including IL-1,2,4,6 and TNF. Co-transfection of Tax p40 or CMV E1+2 expression vector did not increase of luciferase activities.

  • Research Products

    (12 results)

All 2006 2005

All Journal Article (12 results)

  • [Journal Article] Glucocorticoid inhibits the human pro-interleukin lbeta gene(ILIB) by decreasing DNA binding of transactivators to the signal responsiveenhancer.2006

    • Author(s)
      Waterman WR
    • Journal Title

      Mol Immunol 43巻7号

      Pages: 773-382

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Abnormal intracellular distribution of NFAT1 in T lymphocytes from patients with systemic lupus erythematosus and characteristic clinical features.2006

    • Author(s)
      Fujii, Y.
    • Journal Title

      Clin Immunol (In press)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Glucocorticoid inhibits the human pro-interleukin 1β gene(ILIB) by decreasing DNA binding of transactivators to the signal-responsive enhancer.2006

    • Author(s)
      Wayne R.Waterman.et al.
    • Journal Title

      Molecular Immunology 43(7)

      Pages: 773-782

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Abnormal intracellular distribution of NFAT1 in T lymphocytes from patients with systemic lupus erythematosus and characteristic clinical features.2006

    • Author(s)
      Fujii, Y.et al.
    • Journal Title

      Clin Immunol. (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Down-regulation of CD40 and CD80 on B cells in patients with life-threatening systemic lupus erythematosus after successful treatment with rituximab.2005

    • Author(s)
      Tokunaga, M.
    • Journal Title

      Rheumatology 44巻2号

      Pages: 176-182

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Small GTP-binding protein rho-mediated signaling promotes proliferation of rheumatoid synovial fibroblasts.2005

    • Author(s)
      Nakayamada, S.
    • Journal Title

      Arthritis Res Ther 7巻3号

      Pages: R476-484

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Clinical relevance of expression of P-glycoprotein on peripheral lymphocytes to steroid-resistance in systemic lupus erythematosus.2005

    • Author(s)
      Tsujimura, S.
    • Journal Title

      Arthritis & Rheumatism 52巻6号

      Pages: 1676-1683

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Extremely high titer of anti-human chimeric antibody following re-treatment with rituximab in a patient with active systemic lupuserythematosus.2005

    • Author(s)
      Saito, K.
    • Journal Title

      Rheumatology 44巻11号

      Pages: 1462-1464

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Down-regulation of CD40 and CD80 on B cells in patients with life-threatening systemic lupus erythematosus after successful treatment with rituximab2005

    • Author(s)
      Tokunaga, M.et al.
    • Journal Title

      Rheumatology 44

      Pages: 176-182

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Small GTP-binding protein rho-mediated signaling promotes proliferation of rheumatoid synovial fibroblasts.2005

    • Author(s)
      Nakayamada, S.et al.
    • Journal Title

      Arthritis Res Ther 7

      Pages: 476-484

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Clinical relevance of expression of P-glycoprotein on peripheral lymphocytes to steroid-resistance in systemic lupus erythematosus.2005

    • Author(s)
      Tsujimura S.et al.
    • Journal Title

      Arthritis Rheum 52(6)

      Pages: 1676-1683

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Extremely high titer of anti-human chimeric antibody following re-treatment with rituximab in a patient with active systemic lupus erythematosus.2005

    • Author(s)
      Saito, K.et al.
    • Journal Title

      Rheumatology 44(11)

      Pages: 1462-1464

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2007-12-13  

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