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

Mechanism and therapeutic application of a novel integrin blocking mAb that inhibit liver fibrosis in mice

Research Project

Project/Area Number 17H04161
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Gastroenterology
Research InstitutionHiroshima University

Principal Investigator

Yokosaki Yasuyuki  広島大学, 保健管理センター, 准教授 (80210607)

Co-Investigator(Kenkyū-buntansha) 茶山 一彰  広島大学, 医系科学研究科(医), 教授 (00211376)
西道 教尚  広島大学, 保健管理センター, 研究員 (00583486)
仙谷 和弘  広島大学, 医系科学研究科(医), 講師 (30508164)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥16,900,000 (Direct Cost: ¥13,000,000、Indirect Cost: ¥3,900,000)
Fiscal Year 2019: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2018: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Fiscal Year 2017: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
Keywordsインテグリン / 肝線維症 / TGFβ / 筋線維芽細胞 / YAP-1 / インテグリンα8β1 / YAP1 / 線維化 / 肝臓 / 肝線維化 / 抗体医薬 / Integrin α8β1 / α-SMA / Fibrosis / TGF-β
Outline of Final Research Achievements

The integrin family, matrix receptors, is an appealing therapeutic target proteins. Excessive matrix deposition is substantial pathology in tissue fibrosis. Integrin α8β1 is a messenchymal integrin that functions as a receptor for matrx proteins including nephronectin. Its participation in development of fibrosis has been unknown mainly due to a lack of a specific inhibitor, inparticular a neutralization monoclonal antibody. After we successfully generated the blocking mAb, we have demonstrated that the inhibition ammeliorates fibrosis in mouse liver fibrosis models.
In the present investigation, we have shown, as functional evidence, its TGF-β activation capacity and myofibroblast differentiation promotion.In addition, tissue stiffness-induced expression and accumulated expressionin fibroblasts strongly support the profibrotic propety of α8β1.

Academic Significance and Societal Importance of the Research Achievements

実際現在幾つかのインテグリン阻害剤が臨床試験に入っている。しかし、個々のインテグリンの阻害剤作製は容易ではなく、現在まで一部のインテグリンで抗線維化作用が確かめられているだけである。α8β1も例外ではなく、線維芽細胞での明瞭な発現にも拘わらず、線維化への関与は不明であった。
我々の作製したインテグリンα8β1阻害抗体は、抗線維化効果を示すと同時に、その機序や発現機構から、線維化の機序と抑制に対する多くの示唆を与えた。また、同時にこの阻害抗体自体が、抗体医薬としての大きなポテンシャルを有する。何故なら、ニワトリを宿主として作製されたため、マウスだけでなくヒト分子にも同様の阻害効果を示す。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (12 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Int'l Joint Research] UCSF(米国)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] UC Berkely/Empire Biotechnologie(米国)

    • Related Report
      2017 Annual Research Report
  • [Journal Article] The Crosstalk Between TGF-β and Periostin Can Be Targeted for Pulmonary Fibrosis.2020

    • Author(s)
      Nanri Y, Nunomura S, Terasaki Y, Yoshihara T, Hirano Y, Yokosaki Y, Yamaguchi Y, Feghali- Bostwick C, Ajito K, Murakami S, Conway SJ, Izuhara K.
    • Journal Title

      Am J Respir Cell Mol Biol

      Volume: 62 Issue: 2 Pages: 204-216

    • DOI

      10.1165/rcmb.2019-0245oc

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Expansion of hedgehog activation disrupts stromal identity and induces emphysema.2018

    • Author(s)
      Chaoqun Wang, Nabora Soledad Reyes de Mochel, Stephanie Christenson, Monica Cassandras, Rebecca Moon, Alexis Brumwell, Lauren Byrnes, Alfred Li, Yasuyuki Yokosaki, Peiying Shan, Julie Sneddon, David Jablons, Patty J. Lee, Michael A. Matthay, Harold Chapman, Tien Peng.
    • Journal Title

      J Clin Invest

      Volume: 128 Issue: 10 Pages: 4343-4358

    • DOI

      10.1172/jci99435

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Culture time of vitrified/warmed zygotes before microinjection affects the production efficiency of CRISPR-Cas9-mediated knock-in mice2017

    • Author(s)
      Nakagawa Y, Sakuma T, Nishimichi N, Yokosaki Y, Takeo T, Nakagata N, Yamamoto T
    • Journal Title

      Biology Open

      Volume: - Pages: 706-713

    • DOI

      10.1242/bio.025122

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 試験管内親和性成熟によるインテグリンα11β1 阻害抗体の活性改変2019

    • Author(s)
      Norihisa Nishimichi, Mikage Otani, Mari Harada and Yasuyuki Yokosaki
    • Organizer
      分子生物学会
    • Related Report
      2019 Annual Research Report
  • [Presentation] インテグリンα11β1機能阻害モノクローナル抗体の樹立と活性評価2018

    • Author(s)
      西道 教尚、伊藤 益美、大谷 水景、横崎 恭之
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] α-シヌクレインのミクログリア内取り込みはインテグリンα9β1との結合を介したエンドサイトーシスである2018

    • Author(s)
      伊藤 益美、西道 教尚、大谷 水景、原田 真里、横崎 恭之
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] インテグリン阻害抗体の脱着・解離効果の有無とそのエピトープからの予測,2018

    • Author(s)
      大谷 水景、西道 教尚、伊藤 益美、吉栖 正生、横崎 恭之
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Integrin α8β1 promotes tissue fibrosis via differentiation of myofibroblast -a potent therapeutic target on fibrosis-2017

    • Author(s)
      Nishimichi N, Kanno K, Sentani K, Sugiyama A, Ito M, Otani M, Hanaoka M, Yasui W, Yokosaki Y.
    • Organizer
      Gordon Research Conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Identification of conformational epitopes for integrin blocking mAbs against α3 and α5 subunits.2017

    • Author(s)
      Otani M, Nishimichi N, Ito M, Hanaoka M, Yoshizumi M, Yokosaki Y.
    • Organizer
      Gordon Research Conference
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Remarks] インテグリン治療開発フロンティア研究室

    • Related Report
      2017 Annual Research Report

URL: 

Published: 2017-04-28   Modified: 2022-06-09  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi