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The exploration of therapeutic target molecules for Sjogrens syndrome focusing on B cell subsets

Research Project

Project/Area Number 19K17916
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 54020:Connective tissue disease and allergy-related
Research InstitutionKeio University

Principal Investigator

Takei Eriko  慶應義塾大学, 医学部(信濃町), 助教 (40594643)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2019: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Keywordsシェーグレン症候群 / B細胞 / 自己抗体 / 病態モデルマウス / 抗体産生 / B細胞亜分画 / 治療標的分子
Outline of Research at the Start

申請者はシェーグレン症候群(SS)の病態の中心を担うCD38highIgD+B細胞亜群の機能とSS病態における役割を明らかにした。そこで、CD38highIgD+B細胞亜群の機能についてより詳細な分化やIgG産生の分子機序を明らかにする。同時に、SS病態モデルマウスを用いて、ヒトのCD38highIgD+B細胞にあたるB220+IgM+IgD+細胞のノックアウトマウスを作成してSSの特徴的な症状である自己抗体産生亢進や涙腺、顎下腺への炎症細胞浸潤などを指標にSSの病勢緩和を検証する。他領域で臨床開発が進められている抗CD38モノクローナル抗体による標的治療の可能性について探る。

Outline of Final Research Achievements

The purpose of this study is to demonstrate the possible involvement of CD38highIgD+B cells in the pathogenesis of Sjogren’s syndrome (SS) by characterization of the cells from patients and autoimmune model mice, and consequently search novel therapeutic targets to treat SS. We found that expression levels of BAFF receptor (BR3) and IL-6 receptor were elevated in CD38highIgD+B cells of patients and that IgG production by SS B cells was enhanced upon the stimulation including BAFF as compared with healthy controls. In addition, proportion of CD38+IgD+ cells was decreased in splenocytes of MRL/lpr mice, autoimmune model mice, while the proportion of CD38+IgD- B cells and titer of anti-dsDNA antibody were increased with the progression of the disease. Our results indicate that CD38highIgD+ B cells highly react to BAFF and differentiate plasma cells to produce IgG and the pathways of differentiation of plasma cells from CD38highIgD+ B cells are promising therapeutic targets to treat SS.

Academic Significance and Societal Importance of the Research Achievements

本研究は指定難病であるシェーグレン症候群(SS)の病態の中心を担うB細胞の機能亢進について、CD38highIgD+B 細胞に焦点をおいてその機序を明らかにすることを目的としている。SSは、慢性唾液腺炎や乾燥性角結膜炎に加えて全身性に多彩な病態を合併し、患者のQOLは生涯に渡り著しく害されるが、病態形成のメカニズムが不明であるため病態に沿った根治薬は存在しない。本研究はB細胞の亜群に焦点を絞っており、基礎研究として極めて独創性、新規性が高く、研究成果は根治薬のない免疫難病領域に有効性の高い新規治療薬を提供するというアンメットメディカルニーズに応えることを可能とし、社会的な貢献度も高い。

Report

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

    (15 results)

All 2021 2020 2019

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (14 results) (of which Int'l Joint Research: 4 results)

  • [Journal Article] Elevated expression of BAFF receptor, BR3, on monocytes correlates with B cell activation and clinical features of patients with primary Sjogren’s syndrome2020

    • Author(s)
      Yoshimoto Keiko、Suzuki Katsuya、Takei Eriko、Ikeda Yumi、Takeuchi Tsutomu
    • Journal Title

      Arthritis Research & Therapy

      Volume: 22 Issue: 1

    • DOI

      10.1186/s13075-020-02249-1

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 原発性シェーグレン症候群患者末梢血単球におけるBAFFシグナルとイオンチャンネルのクロストーク機構の解析2021

    • Author(s)
      吉本桂子、鈴木勝也、池田由美、武井江梨子、竹内 勤
    • Organizer
      第65回日本リウマチ学会総会・学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 原発性シェーグレン症候群患者末梢血単球ではTLR4シグナル経路の活性化がBAFF受容体発現亢進に寄与する2021

    • Author(s)
      池田由美、吉本桂子、鈴木勝也、武井江梨子、竹内 勤
    • Organizer
      第65回日本リウマチ学会総会・学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] BAFF-BAFF receptor, BR3, axis is involved in activation of monocytes via NF-kB pathways and assists B cell activation in patients with primary Sjogren’s syndrome.2021

    • Author(s)
      Keiko Yoshimoto, Katsuya Suzuki, Yumi Ikeda, Eriko Takei, Tsutomu Takeuchi
    • Organizer
      23rd APLAR Asia-Pasific League of Associations of Rheumatology Congress
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Activation of signaling pathways of Toll-like receptor 4 promotes expression of BAFF receptor, BR3 in CD14+CD16+ human monocytes.2021

    • Author(s)
      Yumi Ikeda, Keiko Yoshimoto, Katsuya Suzuki, Eriko Takei, Tsutomu Takeuchi
    • Organizer
      23rd APLAR Asia-Pasific League of Associations of Rheumatology Congress
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 原発性シェーグレン症候群患者末梢血単球でのBAFF受容体発現亢進におけるTLR4シグナルの関与2021

    • Author(s)
      池田由美、吉本桂子、鈴木勝也、武井江梨子、竹内 勤、金子 祐子
    • Organizer
      第8回JCRベーシックリサーチカンファレンス
    • Related Report
      2021 Annual Research Report
  • [Presentation] Possible involvement of the voltage-gated sodium channel 1.7 in activation of BAFF signaling in monocytes of patients with primary Sjogren’s syndrome.2021

    • Author(s)
      Keiko Yoshimoto, Katsuya Suzuki, Yumi Ikeda, Eriko Takei, Tsutomu Takeuchi
    • Organizer
      第50回日本免疫学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Signaling pathways via Toll-like receptor 4 are involved in enhanced expression of BAFF receptor in CD14+CD16+ human monocytes.2021

    • Author(s)
      Yumi Ikeda, Keiko Yoshimoto, Katsuya Suzuki, Eriko Takei, Tsutomu Takeuchi
    • Organizer
      第50回日本免疫学会学術集会
    • Related Report
      2021 Annual Research Report
  • [Presentation] シェーグレン症候群末梢血単球でのBAFF誘導IL-6産生機構におけるNav1.7チャンネルの関与2021

    • Author(s)
      吉本桂子、鈴木勝也、池田由美、武井江梨子、竹内 勤
    • 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] 原発性シェーグレン症候群患者末梢血単球でのBAFF受容体発現亢進にはTLR4シグナル経路が関与する2021

    • Author(s)
      池田由美、吉本桂子、鈴木勝也、武井江梨子、竹内 勤
    • 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] 原発性シェーグレン症候群患者末梢血単球でのBAFF受容体発現亢進はB細胞活性化および臨床的特徴に関与する2020

    • Author(s)
      吉本桂子、鈴木勝也、武井江梨子、池田由美、竹内 勤
    • Organizer
      第64回日本リウマチ学会総会・学術集会
    • Related Report
      2020 Research-status Report
  • [Presentation] Signaling pathways via Toll-like receptor 4 are involved in elevated expression of BAFF receptor in monocytes.2020

    • Author(s)
      Yumi Ikeda, Keiko Yoshimoto, Katsuya Suzuki, Eriko Takei, Tsutomu Takeuchi
    • Organizer
      22nd Asia-Pacific League of Associations for Rheumatology Congress
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] 間質性肺炎合併原発性シェーグレン症候群における臨床像の検討2019

    • Author(s)
      武井江梨子、鈴木勝也、仁科 直、安岡秀剛、竹内 勤
    • Organizer
      第63回日本リウマチ学会総会・学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] ELEVATED EXPRESSION OF BAFF-RECEPTOR IN PERIPHERAL MONOCYTES PROMOTES B CELL ACTIVATION AND CORRELATES WITH CLINICAL MANIFESTATIONS OF PRIMARY SJÖGREN’S SYNDROME.2019

    • Author(s)
      Keiko Yoshimoto, Katsuya Suzuki, Yumi Ikeda, Eriko Takei, Tsutomu Takeuchi
    • Organizer
      EULAR 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 原発性シェーグレン症候群患者末梢血単球でのBAFF受容体発現亢進とB細胞活性化の関与2019

    • Author(s)
      吉本桂子、鈴木勝也、武井江梨子、竹内 勤
    • Organizer
      第28回日本シェーグレン症候群学会・学術集会
    • Related Report
      2019 Research-status Report

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

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