• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Pathogenetic roles of anti-DNA antibodies in systemic lupus erythematosus

Research Project

Project/Area Number 20K07821
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52010:General internal medicine-related
Research InstitutionTokyo Medical and Dental University

Principal Investigator

Kubota Tetsuo  東京医科歯科大学, 大学院医歯学総合研究科, 非常勤講師 (90205138)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords全身性エリテマトーデス / 抗DNA抗体 / 精神神経ループス / 神経精神ループス / 全身性エリテマトーデス(SLE) / 自己免疫疾患
Outline of Research at the Start

全身性エリテマトーデス(SLE)で認められる抗DNA抗体は,疾患特異性が高く,疾患活動性とも相関することが多いが,その病態形成上の役割は充分解明されていない。本研究は,性状の明らかなモノクローナル抗DNA抗体と,均一なDNA,および正常ヒト血液細胞を用いた実験系を確立して,抗DNA抗体がどのような細胞に,どのような機構で取り込まれ,どのようなシグナル伝達経路を活性化して,SLEの病態に関わるサイトカイン等の発現を誘導するのかを明らかにすることを目指すものである。

Outline of Final Research Achievements

In systemic lupus erythematosus, various autoantibodies including those reactive with DNA are produced. This study aimed to clarify the pathogenetic role of the anti-DNA antibodies. In a previous study, we have shown that a monoclonal anti-DNA antibody WB-6, which is cross-reactive with phospholipid, enters monocytes and induces tissue factor expression and a pro-thrombotic state. Currently, we demonstrated that the TLR9 pathway is the main pathway in this process. In another study, we have shown that a dsDNA-specific monoclonal antibody 2C10 enters monocytes and induces expression of IFN-alpha, IFN-beta, TNF-alpha by peripheral blood mononuclear cells. Currently, we extended these results and tested if these anti-DNA antibodies also enter live cells in the brain. As a result, we observed that WB-6 entered the cytoplasm and 2C10 entered the nucleus of rat primary culture astrocytes.

Academic Significance and Societal Importance of the Research Achievements

全身性エリテマトーデス(SLE)の病態形成機構の一つとして,抗DNA抗体とDNAの免疫複合体がエンドサイトーシスで細胞内に取り込まれ,自然免疫のDNAセンサーを刺激してサイトカイン産生などが誘発されることが示唆されている.しかし,中枢神経系の細胞にもこのような機構が当てはまるか否かについてはほとんど知見がない.本研究は抗DNA抗体がアストロサイトにも能動的に取り込まれることを示したもので,SLEにしばしば見られる精神神経症状の発症機構の解明につながる重要な情報を提供するものである.

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (9 results)

All 2023 2022 2021 2020

All Journal Article (5 results) (of which Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (4 results) (of which Invited: 1 results)

  • [Journal Article] Analyzing schizophrenia-related phenotypes in mice caused by autoantibodies against NRXN1α in schizophrenia2023

    • Author(s)
      Shiwaku Hiroki、Katayama Shingo、Gao Mengxuan、Kondo Kanoh、Nakano Yuri、Motokawa Yukiko、Toyoda Saori、Yoshida Fuyuko、Hori Hiroaki、Kubota Tetsuo、Ishikawa Kinya、Kunugi Hiroshi、Ikegaya Yuji、Okazawa Hitoshi、Takahashi Hidehiko
    • Journal Title

      Brain, Behavior, and Immunity

      Volume: 111 Pages: 32

    • DOI

      10.1016/j.bbi.2023.03.028

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Autoantibodies against NCAM1 from patients with schizophrenia cause schizophrenia-related behavior and changes in synapses in mice2022

    • Author(s)
      Shiwaku H, Katayama S, Kondo K, Nakano Y, Tanaka H, Yoshioka Y, Fujita K, Tamaki H, Takebayashi H, Terasaki O, Nagase Y, Nagase T, Kubota T, Ishikawa K, Okazawa H, Takahashi H.
    • Journal Title

      Cell Rep Med.

      Volume: 3(4) Issue: 4 Pages: 100597-100597

    • DOI

      10.1016/j.xcrm.2022.100597

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anti-rods/rings autoantibodies in a patient with pancreatic injury2022

    • Author(s)
      Katayama S, Kubota T, Takahashi H, Shiwaku H.
    • Journal Title

      Autoimmun Rev

      Volume: 21(1) Issue: 1 Pages: 102922-102922

    • DOI

      10.1016/j.autrev.2021.102922

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The designed NF?κB inhibitor, DHMEQ, inhibits KISS1R?mediated invasion and increases drug?sensitivity in mouse plasmacytoma SP2/0 cells2021

    • Author(s)
      Lin Yinzhi、Sidthipong Kulrawee、Ma Jun、Koide Naoki、Umezawa Kazuo、Kubota Tetsuo
    • Journal Title

      Experimental and Therapeutic Medicine

      Volume: 22 Issue: 4

    • DOI

      10.3892/etm.2021.10526

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Anti-DNA antibodies cross-reactive with β2-glycoprotein I induce monocyte tissue factor through the TLR9 pathway2020

    • Author(s)
      Saito Masumi、Makino Yumi、Inoue Kumi、Watanabe Yoshino、Hoshi Osamu、Kubota Tetsuo
    • Journal Title

      Immunological Medicine

      Volume: on line Issue: 2 Pages: 1-12

    • DOI

      10.1080/25785826.2020.1796285

    • Related Report
      2021 Research-status Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] 抗DNA抗体は生きている好中球の核に入る2022

    • Author(s)
      小森恵美,木幡桃子,志田奈央,細谷佳生,井上久美,窪田哲朗
    • Organizer
      第16回日本臨床検査学教育学会学術大会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 抗核抗体の基礎・検査・臨床2021

    • Author(s)
      窪田哲朗
    • Organizer
      第65回日本リウマチ学会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 抗DNA抗体は神経細胞にも取り込まれる2021

    • Author(s)
      井上久美,星治,窪田哲朗
    • Organizer
      第49回日本臨床免疫学会
    • Related Report
      2021 Research-status Report
  • [Presentation] 抗DNA抗体による組織因子発現とToll-like receptors2020

    • Author(s)
      窪田哲朗
    • Organizer
      第48回日本臨床免疫学会
    • Related Report
      2020 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi