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Mechanism of tissue elasticity development

Research Project

Project/Area Number 19H03439
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 49010:Pathological biochemistry-related
Research InstitutionKansai Medical University

Principal Investigator

NAKAMURA Tomoyuki  関西医科大学, 医学部, 教授 (20362527)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2020: ¥5,850,000 (Direct Cost: ¥4,500,000、Indirect Cost: ¥1,350,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywords細胞外マトリックス / 弾性線維 / 膠原線維 / 老化 / 組織再生
Outline of Research at the Start

我々の生体組織の伸縮性は、弾性線維という細胞外マトリックスが担っている。弾性線維の分解・劣化が肺気腫、動脈中膜硬化などの老化関連疾患や皮膚のたるみなどの直接原因であるため、弾性線維の形成・維持の機構解明は高齢化社会における極めて重要な課題である。しかし弾性線維のターンオーバーは極めて遅く、その再生は困難とされている。これまで申請者は弾性線維形成に必要なプロセスを研究し、それぞれのプロセスに必須のタンパク質を同定してきた。本研究では、それらの生体内での機能と動態を明らかにするとともに、弾性線維の維持機構、弾性線維再生がおこる条件等を解明する。

Outline of Final Research Achievements

Elastic fibers, an extracellular matrix, are responsible for the elasticity of our tissues. Degradation and deterioration of elastic fibers are the direct cause of aging-related diseases such as emphysema and arterial sclerosis, as well as sagging skin. In this study, we focused on the function of Fibulin-4, which is considered to be one of the most important elastogenic proteins based on the phenotypes of KO mice, and found that Fibulin-4 is essential for the activity of the elastin cross-linking enzyme LOX. We also revealed the molecular mechanism of LOX activation by Fibulin-4.

Academic Significance and Societal Importance of the Research Achievements

LOXはエラスチンのみならずコラーゲンの架橋も行う酵素であり、細胞外マトリックス形成の鍵となる分子である。これまで報告の無いメカニズムによってLOXが活性化されることが明らかとなり、細胞外マトリックスの強さや伸縮性の調節機構について新たな考え方を提示するものとなった。

Report

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

    (9 results)

All 2021 2020 2019 Other

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

  • [Int'l Joint Research] University of North Carolina/Washington University School of Medicine(米国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] University of North Carolina/Washington University(米国)

    • Related Report
      2019 Annual Research Report
  • [Journal Article] Association of Development of Solar Elastosis with Increased Expression of Fibrillin-1, LTBP-2 and Fibulin-4 in Combination with Decreased Expression of LTBP-42021

    • Author(s)
      Makino T、Kagoyama K、Murabe C、Nakamura T、Shimizu T
    • Journal Title

      Acta Dermato Venereologica

      Volume: 101 Issue: 1 Pages: adv00372-adv00372

    • DOI

      10.2340/00015555-3738

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] A matricellular protein fibulin-4 is essential for the activation of lysyl oxidase2020

    • Author(s)
      Noda Kazuo、Kitagawa Kaori、Miki Takao、Horiguchi Masahito、Akama Tomoya O.、Taniguchi Takako、Taniguchi Hisaaki、Takahashi Kazuaki、Ogra Yasumitsu、Mecham Robert P.、Terajima Masahiko、Yamauchi Mitsuo、Nakamura Tomoyuki
    • Journal Title

      Science Advances

      Volume: 6 Issue: 48

    • DOI

      10.1126/sciadv.abc1404

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Serum latent transforming growth factor-β binding protein 4 as a novel biomarker for idiopathic pleuroparenchymal fibroelastosis2020

    • Author(s)
      Kinoshita Yoshiaki、Ikeda Takato、Kushima Hisako、Fujita Masaki、Nakamura Tomoyuki、Nabeshima Kazuki、Ishii Hiroshi
    • Journal Title

      Respiratory Medicine

      Volume: 171 Pages: 106077-106077

    • DOI

      10.1016/j.rmed.2020.106077

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] opmental and age-related changes to the elastic lamina of Bruch's membrane in mice.2019

    • Author(s)
      Mori H
    • Journal Title

      Graefes Arch Clin Exp Ophthalmol

      Volume: 257 Issue: 2 Pages: 289-301

    • DOI

      10.1007/s00417-018-4184-5

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Presentation] 循環器病学基礎研究の歴史をたどる ~ 生理学から分子生物学へ ~2020

    • Author(s)
      中邨智之
    • Organizer
      第84回日本循環器学会学術集会
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] Essential function of Fibulin-4 in lysyl oxidase activation.2019

    • Author(s)
      Tomoyuki Nakamura
    • Organizer
      Gordon Research Conference on Elastin and Elastic Fiber
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 弾性線維形成のしくみ ~弾性線維形成タンパク質と日光弾性線維症の発症メカニズム2019

    • Author(s)
      中邨智之
    • Organizer
      第41回日本光医学・光生物学会
    • Related Report
      2019 Annual Research Report
    • Invited

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

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