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Role of gap junction protein connexin43 in B cell activation and lupus nephritis

Research Project

Project/Area Number 20K08606
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 53040:Nephrology-related
Research InstitutionUniversity of Yamanashi

Principal Investigator

Yao Jian  山梨大学, 大学院総合研究部, 准教授 (50303128)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsconnexin43 / ギャップ結合 / B細胞 / 抗体産生 / ループス腎炎 / 酸化ストレス / 腎機能 / プリスタン / 抗体産生細胞 / 抗体 / コネクシン43 / B 細胞
Outline of Research at the Start

ループス腎炎は,SLEに合併する最も頻度の高い臓器病変であり,予後を決定する因子である。現在の治療法は、治療効果及び副作用などの問題があり、 より効果的な治療法の開発が必要とされている。我々は、細胞蛋白Cx43が酸化ストレス及び炎症反応を調節することによりループス腎炎の進行に関与している可能性が高いと推測した。本研究はこの仮説を検証することである。具体的には、以下の研究目標を達成することである:1) B細胞の活性化におけるCx43の役割とその分子メカニズムを明らかにすること; 2)LNの進行におけるCx43の関与を証明すること;3)LNの治療におけるCx43標的療法の可能性を検討すること。

Outline of Final Research Achievements

B cells play a central role in the pathogenesis of lupus nephritis (LN). In this study, we focused on connexin43 (Cx43), a gap junction protein that is likely to be deeply involved in the activation of B cells and the pathophysiology of LN. Through in vitro cell experiments, it was found that Cx43 contributed to antibody production via modulating intracellular redox status. Furthermore, in a mouse model of SLE, Cx43 was shown to be deeply involved in the production of antibodies and the progression of LN. In conclusion, this study demonstrated that Cx43 plays an important role in the pathophysiology of SLE, and that targeting Cx43 could be developed as a novel therapy against LN.

Academic Significance and Societal Importance of the Research Achievements

本研究は、ギャップ結合タンパクであるCx43がB細胞の抗体産生を制御すること、またはSLEモデルマウスで腎臓障害を増悪させることを初めて示しました。これらの知見は、Cx43がSLE病態形成に重要な役割を担っていることを示唆し、Cx43を標的とした新規なSLE治療法開発に貢献することが期待されます。本研究の学術的意義は、SLE病態のメカニズム解明に寄与し、Cx43を介したB細胞の抗体産生制御機構の理解を深めたことです。また、社会的意義としては、LNに関連する腎機能障害や末期腎不全の予防・治療に向けた新たな治療法の開発に貢献し、SLE患者のQOLの向上につながることが期待されます。

Report

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

    (12 results)

All 2023 2022 2021 2020 Other

All Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 6 results) Presentation (4 results) Remarks (1 results)

  • [Journal Article] Development of Dietary Thiol Antioxidant via Reductive Modification of Whey Protein and Its Application in the Treatment of Ischemic Kidney Injury2023

    • Author(s)
      Sui Yang、Jiang Rui、Niimi Manabu、Hong Jingru、Yan Qiaojing、Shi Zhuheng、Yao Jian
    • Journal Title

      Antioxidants

      Volume: 12 Issue: 1 Pages: 193-193

    • DOI

      10.3390/antiox12010193

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The Combined Administration of Vitamin C and Copper Induces a Systemic Oxidative Stress and Kidney Injury2023

    • Author(s)
      Jiang Rui、Sui Yang、Hong Jingru、Niimi Manabu、Yan Qiaojing、Shi Zhuheng、Yao Jian
    • Journal Title

      Biomolecules

      Volume: 13 Issue: 1 Pages: 143-143

    • DOI

      10.3390/biom13010143

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Tanshinone IIA stimulates cystathionine γ-lyase expression and protects endothelial cells from oxidative injury2021

    • Author(s)
      Qiaojing Yan, Zhimin Mao, Jingru Hong, Kun Gao, Manabu Niimi, Takahiko Mitsui, Jian Yao
    • Journal Title

      Antioxidants

      Volume: 10/7 Issue: 7 Pages: 1007-1007

    • DOI

      10.3390/antiox10071007

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hydrogen sulfide as a potent scavenger of toxicant acrolein.2021

    • Author(s)
      Zhimin Mao, Yanru Huang, Bingqian Li, Kazutoshi Tomoya, Hideyuki Shinmori, Xuhui Zeng, Zhifeng Gu, Jian Yao
    • Journal Title

      Ecotoxicology and Environmental Safety

      Volume: 229 Pages: 113111-113111

    • DOI

      10.1016/j.ecoenv.2021.113111

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Reductively modified albumin attenuates DSS-Induced mouse colitis through rebalancing systemic redox state2021

    • Author(s)
      Xiawen Yang, Zhimin Mao, Yanru Huang, Haizhao Yan, Qiaojing Yan, Jingru Hong, Jianglin Fan, Jian Yao
    • Journal Title

      Redox Biol

      Volume: 41 Pages: 101881-101881

    • DOI

      10.1016/j.redox.2021.101881

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Gap junctions amplify TRPV4 activation-initiated cell injury via modification of intracellular Ca 2+ and Ca 2+-dependent regulation of TXNIP2020

    • Author(s)
      Xiling Zhang, Zhimin Mao, Yanru Huang, Zhen Zhang, Jian Yao
    • Journal Title

      Channels

      Volume: 14(1) Issue: 1 Pages: 246-256

    • DOI

      10.1080/19336950.2020.1803552

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Connexin Hemichannels Contribute to the Activation of cAMP Signaling Pathway and Renin Production2020

    • Author(s)
      Jingru Hong, Jian Yao
    • Journal Title

      Int J Mol Sci

      Volume: 21(12) Issue: 12 Pages: 4462-4462

    • DOI

      10.3390/ijms21124462

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] The reductively modified whey proteins attenuate renal oxidative cell injury2022

    • Author(s)
      Yang Sui
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] The combined administration of ascorbic acid and copper induces systemic oxidative stress and renal cell injury2022

    • Author(s)
      Jiang Rui
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] 培養腎尿細管上皮細胞に対するアスコルビン酸と銅の併用の有害な影響2021

    • Author(s)
      洪 静茹
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Presentation] TNBS誘発マウス大腸炎におけるギャップ結合タンパク質コネキシン43の役割2021

    • Author(s)
      厳 巧セイ
    • Organizer
      第44回日本分子生物学会年会
    • Related Report
      2021 Research-status Report
  • [Remarks] 山梨大学 教員情報検索

    • URL

      http://nerdb-re.yamanashi.ac.jp/Profiles/322/0032110/profile.html

    • Related Report
      2022 Annual Research Report 2021 Research-status Report 2020 Research-status Report

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

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