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

Pulmonary osteoclast-like cells as a novel therapeutic target in pulmonary fibrosis

Research Project

Project/Area Number 20K22880
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0902:General internal medicine and related fields
Research InstitutionSapporo Medical University

Principal Investigator

Hasegawa Yoshihiro  札幌医科大学, 医学部, 講師 (90643180)

Project Period (FY) 2020-09-11 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsじん肺 / 珪肺 / 肺線維症 / 破骨細胞 / RANKL / シリカ
Outline of Research at the Start

じん肺症の中で最多である珪肺は、シリカの吸引が原因であるが、肺線維症を発症する機序は不明で根本的な治療法はない。申請者は最近、珪肺患者と珪肺モデルマウスにおいて、肺胞腔内で破骨細胞分化誘導因子(RANKL)の濃度が上昇し、破骨細胞様の多核巨細胞(肺破骨細胞)が存在することを発見した。また抗RANKL抗体によって、肺破骨細胞への分化が阻害されることも確認した。そこで本研究では、肺破骨細胞が分泌する酸や蛋白分解酵素が肺線維症を引き起こすという仮説のもと、肺破骨細胞の機能解析を行い、肺破骨細胞が肺線維症の誘因となることを証明し、肺破骨細胞を標的とした新たな肺線維症の治療法を提唱することを目指す。

Outline of Final Research Achievements

In silicosis model mice, RANKL expression increased in the lungs and multinucleated giant cells with positive osteoclast markers (designated as pulmonary osteoclasts) were found to be present in the alveolar space. Culture pulmonary osteoclasts on bone sections induced to form pits on the bone surface, suggesting that pulmonary osteoclasts have bone resorption ability. Administration of anti-RANKL antibody to silicosis model mice not only inhibited differentiation into lung osteoclasts but also prevented formation of fibrotic lung lesions, suggesting that targeting RANKL and lung osteoclasts may be an effective therapeutic strategy.

Academic Significance and Societal Importance of the Research Achievements

じん肺症は粉じんの吸引により進行性・不可逆性の肺線維症を引き起こす職業性肺疾患で、世界的に増加している。じん肺症の中で最多である珪肺は、シリカの吸引が原因であることが知られているが、肺線維症を発症する機序は不明で根本的な治療法はない。抗RANKL抗体は、骨粗鬆症の患者に対する使用実績から、安全性に問題がないことが証明されている。本研究で線維化肺病変の抑制効果を個体レベルで示すことができたため、速やかに臨床応用できる可能性がある。さらに石綿肺を始めとする他のじん肺症の治療に応用できる可能性も高い。

Report

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

    (8 results)

All 2022 2021 2020 Other

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

  • [Int'l Joint Research] University of Cincinnati(米国)

    • Related Report
      2020 Research-status Report
  • [Journal Article] N-glycosylation regulates MET processing and signaling2022

    • Author(s)
      Atsushi Saitou, Yoshihiro Hasegawa, Naoki Fujitani, Shigeru Ariki, Yasuaki Uehara, Ukichiro Hashimoto, Atsushi Saito, Koji Kuronuma, Kunio Matsumoto, Hirofumi Chiba, Motoko Takahashi
    • Journal Title

      Cancer Science

      Volume: ー Issue: 4 Pages: 1292-1304

    • DOI

      10.1111/cas.15278

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of glycosyltransferases in carcinogenesis; growth factor signaling and EMT/MET programs2022

    • Author(s)
      Takahashi M, Hasegawa Y, Maeda K, Kitano M, Taniguchi N.
    • Journal Title

      Glycoconjugate Journal

      Volume: 39 Issue: 2 Pages: 167-176

    • DOI

      10.1007/s10719-022-10041-3

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Integrated Structual Analysis of N-glycans and Free Oligosaccharides Allows for a Quantitative Evalution of ER Stress2021

    • Author(s)
      Fujitani N, Ariki S, Hasegawa Y, Uehara Y, Takahashi M.
    • Journal Title

      Biochemistry

      Volume: 60 Issue: 21 Pages: 1708-1721

    • DOI

      10.1021/acs.biochem.0c00969

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] Upregulation of circulating RANKL induces osteoporosis in the silicosis model mouse2021

    • Author(s)
      Yoshihiro Hasegawa, Yusuke Tanaka, Lori B. Pitstick, Huixing Wu, Elizabeth J. Kopras, Francis X. McCormack
    • Organizer
      American Thoracic Society International Conference (ATS 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RANKL-dependent pulmonary fibrosis in the silicosis model mouse2021

    • Author(s)
      Yoshihiro Hasegawa, Yasuaki Uehara, Yusuke Tanaka, Lori B. Pitstick, Huixing Wu, Elizabeth J. Kopras, Francis X. McCormack
    • Organizer
      The 25th Congress of the Asian Pacific Society of Respirology (APSR 2021)
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research
  • [Presentation] RANKL Dependent Differentiation Of Pulmonary Osteoclast-like Cells In Silica-induced Pulmonary Fibrosis2020

    • Author(s)
      Yoshihiro Hasegawa, Yusuke Tanaka, Ciara M. Shaver, Kevin K. Brown, Charles Perkins, Lori B. Pitstick, Christopher G. McKnight, Huixing Wu, Elizabeth J. Kopras, Francis X. McCormack
    • Organizer
      American Thoracic Society International Conference (ATS 2020 Virtual)
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] The interaction of pulmonary collectins with N-glycans of epidermal growth factor receptor regulates lung adenocarcinoma progression2020

    • Author(s)
      Yoshihiro Hasegawa
    • Organizer
      第43回日本分子生物学会年会
    • Related Report
      2020 Research-status Report
    • Invited

URL: 

Published: 2020-09-29   Modified: 2023-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi