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Elucidation of pathophysiology and establishment of new diagnostic system for IgG4-related disease by autoantigen identification

Research Project

Project/Area Number 19H03698
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 54020:Connective tissue disease and allergy-related
Research InstitutionKobe University

Principal Investigator

Kodama Yuzo  神戸大学, 医学研究科, 教授 (80378687)

Co-Investigator(Kenkyū-buntansha) 塩川 雅広  京都大学, 医学研究科, 特定病院助教 (50737880)
増田 充弘  神戸大学, 医学研究科, 講師 (60512530)
妹尾 浩  京都大学, 医学研究科, 教授 (90335266)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2021: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2019: ¥9,230,000 (Direct Cost: ¥7,100,000、Indirect Cost: ¥2,130,000)
KeywordsIgG4関連疾患 / 自己免疫性膵炎 / 自己抗原 / 自己抗体
Outline of Research at the Start

IgG4関連疾患は、血清IgG4高値に加え、IgG4陽性の形質細胞浸潤による全身臓器の腫大と線維化をきたす原因不明の難病である。最近申請者らは、IgG4関連疾患の膵病変である自己免疫性膵炎において、その病因自己抗原がラミニン511であることを発見した。本研究では、IgG4関連疾患の各臓器病変における自己抗原を同定し、同疾患の全体像の病態解明を目指す。本研究により、我が国から世界へ発信してきた難病の病態解明が進み、新たな診断基準・診療体系の確立につながるものと期待される。

Outline of Final Research Achievements

We recently identified laminin 511 as an autoantigen of autoimmune pancreatitis, one of the IgG4-related diseases. In this study, we aimed to search for autoantigens in other involved organs and elucidate the pathophysiology of IgG4-related disease. As a result, we identified an integrin family molecule that binds to laminin 511 as a novel autoantigen candidate, and assessed its pathogenicity using a mouse model. We also developed a prototypes of autoantibody measurement kits for these autoantigens. These autoantibodies were thought to be pathogenic autoantibodies that contribute to development of IgG4-related disease by inhibiting cell adhesion.

Academic Significance and Societal Importance of the Research Achievements

IgG4関連疾患は未だ原因不明であり我が国の難病に指定されている。申請者らは以前、IgG4関連疾患の膵病変である自己免疫性膵炎の自己抗原としてラミニン511を発見した。本研究では、 新たな自己抗原としてラミニン511と結合するインテグリンファミリー分子が示唆された。これらに対する自己抗体の測定は本疾患の診断に有用と考えられ、測定キットのプロトタイプを作成した。また、これらの自己抗体は病態形成に寄与している可能性があり、これらを標的とする治療開発を進めている。

Report

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

    (7 results)

All 2021 2020

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (3 results)

  • [Journal Article] The clinical efficacy of azathioprine as maintenance treatment for autoimmune pancreatitis: a systematic review and meta-analysis.2021

    • Author(s)
      Masaki Y, Nakase H, Tsuji Y, Nojima M, Shimizu K, Mizuno N, Ikeura T, Uchida K, Ido A, Kodama Y, Seno H, Okazaki K, Nakamura S, Masamune A.
    • Journal Title

      J Gastroenterol.

      Volume: 56 Issue: 10 Pages: 869-880

    • DOI

      10.1007/s00535-021-01817-9

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Review of Diagnostic Biomarkers in Autoimmune Pancreatitis: Where Are We Now?2021

    • Author(s)
      Yokode M, Shiokawa M, Kodama Y.
    • Journal Title

      Diagnostics

      Volume: 11 Issue: 5 Pages: 770-770

    • DOI

      10.3390/diagnostics11050770

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Phenotyping of IgG4-related diseases based on affected organ pattern: A multicenter cohort study using cluster analysis.2020

    • Author(s)
      Niwamoto T, Handa T, Matsui S, Yamamoto H, Yoshifuji H, Abe H, MatsumotoH, Kodama Y, Chiba T, Seno H, Mimori T, Hirai T.
    • Journal Title

      Modern Rheumatology

      Volume: in press Issue: 1 Pages: 235-240

    • DOI

      10.1080/14397595.2019.1703522

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Efficacy and limitations of the histological diagnosis of type 1 autoimmune pancreatitis with endoscopic ultrasound-guided fine needle biopsy with large tissue amounts.2020

    • Author(s)
      Notohara K, Kamisawa T, Kanno A, Naitoh I, Iwasaki E, Shimizu K, Kuraishi Y, Motoya M, Kodama Y, Kasashima S, Nishino T, Kubota K, Sakagami J, Ikeura T, Kawa S, Okazaki K.
    • Journal Title

      Pancreatology.

      Volume: 5 Issue: 5 Pages: 834-843

    • DOI

      10.1016/j.pan.2020.05.026

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Presentation] 当院における自己免疫性膵炎の長期予後と悪性腫瘍の発症および再燃リスク因子の検討2021

    • Author(s)
      權田 真知、増田充弘、児玉裕三
    • Organizer
      第52回日本膵臓学会大会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 膵頭部限局型自己免疫性膵炎の経過中に膵頭部に肺癌転移を来した一例2021

    • Author(s)
      春山忠佑、小林隆 、田中雄志、原田宜幸、三木美香、猪股典子、植村久尋、孝橋信哉、長尾佳映、阿部晶平、権田真知、増田重人、芦名茂人、辻前正弘、山川 康平、山田 恭孝、酒井新、増田 充弘、児玉 裕三
    • Organizer
      第115回日本消化器病癌会近畿支部例会
    • Related Report
      2021 Annual Research Report
  • [Presentation] A case of pancreatic cancer concomitant with IgG4-related disease in the pancreas and the stomach2021

    • Author(s)
      Takashi Kobayashi, Masanori Gonda, Yuzo Kodama
    • Organizer
      The 4th International symposium on IgG4-related diseases
    • Related Report
      2021 Annual Research Report

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

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