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Direct involvement of HTLV-1 for pathogenesis of Sjogren's syndrome

Research Project

Project/Area Number 19K08884
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 54020:Connective tissue disease and allergy-related
Research InstitutionNihon University (2021)
Nagasaki University (2019-2020)

Principal Investigator

NAKAMURA Hideki  日本大学, 医学部, 教授 (10437832)

Co-Investigator(Kenkyū-buntansha) 清水 俊匡  長崎大学, 病院(医学系), 助教 (40770467)
川上 純  長崎大学, 医歯薬学総合研究科(医学系), 教授 (90325639)
高谷 亜由子  長崎大学, 病院(医学系), 医員 (90821380)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsシェーグレン症候群 / HTLV-1 / 濾胞性樹状細胞
Outline of Research at the Start

HTLV-1感染によって、自己抗体産生機構に直接的な影響が生じるかとその結果外分泌腺組織に免疫学的な特徴が生じているかを包括的に解析する必要がある。このため、免疫担当細胞として濾胞性樹状細胞(FDCs)を樹立し、HTLV-1感染による機能変化や抗体産生能への影響を検討する。また、自然免疫の観点から唾液腺上皮細胞を用い、toll様受容体(TLR)を介したHTLV-1感染とそのアウトカムを検討する。HTLV-1関連SSと通常のSS(抗HTLV-1抗体陰性SS)の発症機序と病態の相違を明らかにする。これによりSSの一部がHTLV-1関連疾患の概念に組み入れられる病態であるか否かを解明する。

Outline of Final Research Achievements

It has been suggested that Sjogren's syndrome (SS) is associated with human T-cell leukemia virus type 1 (HTLV-1). The action of follicular dendritic cells (FDCs) and B cells induces autoantibody producing plasma cell differentiation, but secondary follicular formation in the salivary glands of the patients with HTLV-1-associated myelopathy is inhibited, and the effect of HTLV-1 on FDCs was investigated. Co-culture with HCT-5/MT-2 suppressed the expression of CXCL13 and BAFF. BAFF showed a decreasing tendency when HCT-5/MT-2 was added to FDC-like cells. BAFF / CXCL13 concentrations tended to be lower in anti-HTLV-1 antibody-positive SS than in antibody-negative SS. It was suggested that the low frequency of anti-Ro / SS-A antibody appearance in anti-HTLV-1 antibody-positive SS may be due to functional suppression of FDC-like cells.

Academic Significance and Societal Importance of the Research Achievements

シェーグレン症候群(以下SS)における自己抗体産生系の中で、異所性二次濾胞内上流に位置すると思われる濾胞性樹状細胞(FDC)様細胞のはたらきが、HTLV-1感染細胞HCT-5/MT-2による直接作用によって阻害され、少なくとも細胞内のCXCL13/BAFF発現とインターフェロン刺激で増加するBAFF分泌が抑制されている結果が得られた。また、抗HTLV-1抗体陽性SS患者血清中のBAFF/CXCL13濃度は抗体陰性SS患者より低い傾向が示された。以上より抗HTLV-1抗体陽性SSにおける抗Ro/SS-A抗体出現頻度の低さが、FDC様細胞の機能抑制によって生じている可能性が示唆された。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (7 results)

All 2021 2020 2019

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 4 results) Presentation (2 results)

  • [Journal Article] Inhibitory effect of HTLV-1 infection on the production of B-cell activating factors in established follicular dendritic cell-like cells.2021

    • Author(s)
      Takatani A, Nakamura H, Furukawa K, Endo Y, Umeda M, Shimizu T, Nishihata SY, Kitaoka K, Nakamura T, Kawakami A.
    • Journal Title

      Immun Inflamm Dis.

      Volume: 9 Issue: 3 Pages: 777-791

    • DOI

      10.1002/iid3.432

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tocilizumab has no direct effect on cell lines infected with human T-cell leukemia virus type 1.2021

    • Author(s)
      Endo Y, Fukui S, Koga T, Sasaki D, Hasegawa H, Yanagihara K, Okayama A, Nakamura T, Kawakami A, Nakamura H. Tocilizumab has no direct effect on cell lines infected with human T-cell leukemia virus type 1.
    • Journal Title

      J Int Med Res.

      Volume: 49 Issue: 3 Pages: 1-10

    • DOI

      10.1177/03000605211002083

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhibitory effect of HTLV-1 infection on the production of B-cell activating factors in established follicular dendritic cell-like cells2021

    • Author(s)
      Takatani A, Nakamura H, Furukawa K, Endo Y, Umeda M, Shimizu T, Nishihata S, Kitaoka K, Nakamura T, Kawakami A
    • Journal Title

      Immunity, Inflammation and Disease

      Volume: -

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Effectiveness and safety of non-tumor necrosis factor inhibitor therapy for anti-human T-cell leukemia virus type 1 antibody-positive rheumatoid arthritis2020

    • Author(s)
      Endo Yushiro、Fukui Shoichi、Umekita Kunihiko、Kawakami Atsushi、Nakamura Hideki、et al
    • Journal Title

      Modern Rheumatology

      Volume: - Issue: 5 Pages: 972-978

    • DOI

      10.1080/14397595.2020.1847802

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Initial human T-cell leukemia virus type 1 infection of the salivary gland epithelial cells requires a biofilm-like structure.2019

    • Author(s)
      Nakamura H, Shimizu T, Takatani A, Suematsu T, Nakamura T, Kawakami A.
    • Journal Title

      Virus Res

      Volume: 269 Pages: 197643-197643

    • DOI

      10.1016/j.virusres.2019.197643

    • NAID

      120006987683

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] HTLV-1とシェーグレン症候群2021

    • Author(s)
      中村英樹
    • Organizer
      第29回日本シェーグレン症候群学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] HTLV-1のシェーグレン症候群患者唾液腺上皮細胞への初期感染様式2019

    • Author(s)
      中村英樹、清水俊匡、高谷亜由子、末松貴史、川上純
    • Organizer
      第28回日本シェーグレン症候群学会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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