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Studies on the pathogenesis of systemic lupus erythematosus mediated by endoplasmic reticulum stress and antigen cross-presentation

Research Project

Project/Area Number 16K21219
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Cell biology
Immunology
Research Institution株式会社膠原病研究所 (2018)
Kyushu University (2016-2017)

Principal Investigator

Tsumiyama Ken  株式会社膠原病研究所, 研究部, 主任研究員 (20514607)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2017: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords全身性エリテマトーデス(SLE) / 小胞体ストレス / 抗原のクロスプレゼンテーション / 抗原のクロプレゼンテーション / 免疫関連疾患 / タンパク質分解
Outline of Final Research Achievements

We examined the pathogenesis of systemic lupus erythematosus (SLE) by studying the contribution of the endoplasmic reticulum (ER) stress to antigen cross-presentation in DC. We found that the expression of unfolded protein response (UPR)-related molecules were increased in DC of mice when SLE was induced. Further, ER stress increased endosomal Sec61 in DC thereby increasing the amount of antigen accumulated in the cytoplasm and promoting antigen cross-presentation. Thus, ER stress increased endosomal Sec61 thereby contributing to the induction of lupus tissue injury by facilitating antigen cross-presentation.

Academic Significance and Societal Importance of the Research Achievements

本研究により、難病であるSLEの発症メカニズムの一端を明らかにすることができた。この中で、これまで明らかではなかった抗原のクロスプレゼンテーションの意義として、SLEの発症に関与することを示すことができた。また、細胞の恒常性を維持する機構である小胞体ストレス応答が、SLEの発症に関与することが示された。これにより、小胞体ストレス応答関連分子を標的としたSLEの治療の可能性が示されたと考える。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (3 results)

All 2018 2016

All Presentation (3 results) (of which Int'l Joint Research: 1 results)

  • [Presentation] 小胞体ストレスは抗原のクロスプレセンテーションを促進してSLEの組織傷害を引き起こす2018

    • Author(s)
      積山賢、塩沢俊一
    • Organizer
      第61回日本リウマチ学会総会・学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] Endoplasmic reticulum stress facilitates antigen cross-presentation by increasing endosomal Sec61 to generate lupus kidney disease.2016

    • Author(s)
      Tsumiyama K, Shiozawa S.
    • Organizer
      第45回日本免疫学会総会・学術集会
    • Place of Presentation
      沖縄コンベンションセンター(沖縄県・宜野湾市)
    • Year and Date
      2016-12-05
    • Related Report
      2016 Research-status Report
  • [Presentation] Endoplasmic reticulum stress induces lupus kidney disease by facilitating antigen cross-presentation via the increase of endosomal Sec61.2016

    • Author(s)
      Tsumiyama K, Shiozawa S.
    • Organizer
      アメリカリウマチ学会2016
    • Place of Presentation
      ワシントンDC(アメリカ合衆国)
    • Year and Date
      2016-11-13
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2020-03-30  

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