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Mechanisms of suppression on cytokine expression in HTLV-1-infected T cell clones by aqueous humor

Research Project

Project/Area Number 09671825
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Ophthalmology
Research InstitutionKurume University

Principal Investigator

YOSHIMURA Koichi (1998)  Kurume University, Ophthalmology, Lecturer, 医学部, 講師 (30240352)

小野 綾子 (1997)  久留米大学, 医学部, 助手 (30224265)

Co-Investigator(Kenkyū-buntansha) WATANABE Toshiki  University of Tokyo, Pathology, Associate Professor, 医科学研究所, 助教授 (30182934)
HIKITA Naofumi  Kurume University, Ophthalmology, Associate Professor, 医学部, 助教授 (80173152)
MOCHIZUKI Manabu  Tokyo Medical and Dental University, Ophthalmology, Professor, 医学部, 教授 (10010464)
吉村 浩一  久留米大学, 医学部, 講師 (30240352)
嶋田 伸宏  久留米大学, 医学部, 助手 (10268922)
Project Period (FY) 1997 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 1998: ¥1,200,000 (Direct Cost: ¥1,200,000)
Fiscal Year 1997: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsHTLV-1 / uveitis / aqueous humor / cytokine / suppressive factor / sFasL
Research Abstract

In spite of constitutive overexpression of inflammatory cytokines in HTLV-1-infected T-cells, most cytokine genes are not expressed in the fresh infiltrating cells in the eye, suggesting a suppression of cytokine gene expression. To understand pathophysiology of HU, we characterized the suppressive factors in the aqueous humor (AH) and the mechanisms of suppression. AH dose-dependently suppressed the production of IFN-gamma and IL-6 by HTLV-l-infected T-cell clones and a cell line, Sez. Fractionation of AH by gel filtration column revealed four peaks of suppressive activity, which apparently corresponded molecular masses of a-MSH, VIP, MIF and TGF-beta. However, TGF-beta2, a major immunosuppressive factor in AH, did not show any suppressive activity. We demonstrated sFasL in AH by ELISA using NOKl and NOK3 anti-FasL mAbs and revealed neutralization of the suppression by NOK2 mAb. Crosslinking Fas selectively repressed the IFN-gamma mRNA expression. His-tagged sFasL showed dose-dependent suppression of IFN-gamma production and promoter activity in transient Luciferase assay. Suppression was evident at the concentration as low as 10 to l00pg/ml. Deletion and mutation analyses of IFN-gamma promoter identified a responsive element of 24 nucleotides to the Fas-mediated suppression, which contained binding motifs of YYl and an B-box. Mutation of the E-box in this element abrogated the suppression. Suppression was abolished by expression of dominant negative form of Daxx, an adaptor protein of Fas. The results indicated that sFasL is one of the suppressive factors of cytokine production in the eye, which would play a protective role against cytokine-mediated tissue damages. They also suggested a distinct function of sFasL from the membrane-bound from of FasL.

Report

(3 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] Ayako Ono: "Immunological and virological characterization of the primary infiltrating cells in the aqueous humor of human T-cell leukemia virus type-1 uveitis" Investigative Ophthalmology & Visual Science. 38・6. 676-689 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshiki Watanabe: "HTLV-1-associated disease" International Journal of Hematology. 66・3. 257-278 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yasuhiro Sato: "Human T-cell lymphotropic virus type I can infect primary rat retinal glial cells and induce gene expression of inflammatory cytokines" Current Eye Research. 16・8. 782-791 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 望月 学: "局所T細胞と病態 : 眼" リウマチ科. 17・6. 588-592 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ayako Ono: "Provirus load in patients with human T-cell leukemia virus type I uveitis correlates with precedent Graves' disease and disease activities" Japanese Journal of Cancer Research. 89・6. 608-614 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mami Sakaguchi: "Cytokine production by T cells infiltrating in the eye of uveitis patients" Japanese Journal of Ophthalmology. 42・4. 262-268 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 疋田直文: "HTLV-1ぶどう膜炎の診断と治療" あたらしい眼科. 15・8. 1091-1096 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 小野綾子: "眼科診療プラクティス31" 文光堂, 258 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ayako Ono, Manabu Mochizuki, Kazunari Yamaguchi, Norio Miyata, Toshiki Watanabe: "Immunologic and virologic characterization of the primary infiltrating cells in the aqueous humor of human T-cell leukemia virus type-1 uveitis." Investigative Ophthalmology & Visual Science. 38. 676-689

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Toshiki Watanabe: "HTLV-1-associated diseases" International Journal of Hematology. 66. 257-278 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yasuhiro Sato, Kinji Ito, Takashi Moritoyo, Yujiro Fujino, Kanjiro Masuda, Kazunari Yamaguchi, Manabu Mochizuki, Shuji Izumo, Mitsuhiro Osame, Toshiki Watanabe: "Human T-cell lymphotropic virus type 1 can infect primary rat ratinal glial cells and induce gene expression of inflammatory cytokines." Current Eye Research. 16. 782-791 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Manabu Mochizuki, Sunao Sugita: "Production of IL-8 and other cytokines by T cell clones established from the ocular fluid of patients with Behcet's disease." Rheumatology. 17. 588-592 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Ayako Ono, Eiko Ikeda, Manabu Mochizuki, Masao Matsuoka, Kazunari Yamaguchi, Takashi Sawada, Sumitaka Yamane, Shinkan Tokudome, Toshiki Watanabe: "Provirus load in patients with human T-cell keukemia virus type 1 uveitis correlates with precedent Grave's diseases and disease activities." Japanese Journal of Cancer Research. 89. 608-614 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Mami Sakaguchi, Sunao Sugita, Kimitaka Sagawa, Kyogo Itoh, Manabu Mochizuki: "Cytokine production by T cells infiltrating in the eye of uveitiis patients." Japanese Journal of Ophthalmology. 42. 262-268 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Naofumi Hikita: "Diagnosis ang treatment of HTLV-I uveitis" Journal of the Eye. 15. 1091-1096 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Yasuhiro Sato: "Human T-cell lymphotropic virus type 1 can infect primary rat retinal glial cells and induce gene expression of inflammatory cytokines" Current Eye Research. 16・8. 782-791 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] 山田 學: "局所T細胞と病態:眼" リウマチ科. 17・6. 588-592 (1997)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ayako Ono: "Provirus Load in patients with human T-cell leukemia virus type 1 uveitis correlates with precedent Graves′disease and disease activities." Japanese Journal of Cancer Research. 89・6. 608-614 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Mami Sakaguchi: "Cytokine production by T cells infiltrating in the eye of uveitis patients." Japanese Journal of Ophthalmology. 42・4. 262-268 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 疋田直文: "HTLV-Iぶどう膜炎の診断と治療" あたらしい眼科. 15・8. 1091-1096 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Ayako Ono: "Immunological and virological characterization of the primary infiltrating cells in the aqueous humor of human T-cell leukemia virus type-1 uveitis" Invest.Ophthalmol.Vis.Sci.38. 676-689 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Toshiki Watanabe: "HTLV-1-associated disease" Int.J.Hematol.66. 257-278 (1997)

    • Related Report
      1997 Annual Research Report

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Published: 1997-04-01   Modified: 2016-04-21  

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