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Mitochondria-mediated blood flow mechanosensing in endothelial cells

Research Project

Project/Area Number 21H03791
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 90110:Biomedical engineering-related
Research InstitutionThe University of Tokyo

Principal Investigator

Yamamoto Kimiko  東京大学, 大学院医学系研究科(医学部), 准教授 (00323618)

Co-Investigator(Kenkyū-buntansha) 安藤 譲二  獨協医科大学, 医学部, 特任教授 (20159528)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2023: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2022: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2021: ¥7,410,000 (Direct Cost: ¥5,700,000、Indirect Cost: ¥1,710,000)
Keywords血管内皮細胞 / せん断応力 / ミトコンドリア / ATP / メカノバイオロジー
Outline of Research at the Start

細胞や組織が環境に由来する力学刺激を感知して反応する事は、その機能や生存に極めて重要であるが、力学刺激を感知する仕組みは十分解明されていない。本研究では、血管内皮細胞が血流に起因する剪断応力を感知して情報伝達する新しい分子機構として、ミトコンドリアの活性化に焦点を当てた解析を行う。内皮細胞に剪断応力が作用すると、細胞外へATPが放出し、P2X4受容体を活性化することでカルシウムシグナリングが起こる。最近、剪断応力がミトコンドリアでATPを即座に産生し、細胞外へのATP放出が亢進する事を発見した。そこで、細胞膜に作用する剪断応力が細胞内小器官のミトコンドリアを活性化する分子機構の解明を目指す。

Outline of Final Research Achievements

Endothelial cells (ECs) differentially sense laminar and disturbed flows by altering the lipid order of their plasma and mitochondrial membranes in opposite directions. This results in changes in mitochondrial function, namely, increased adenosine triphosphate (ATP) production for laminar flow and increased hydrogen peroxide (H2O2) release for disturbed flow, respectively. When cultured human aortic ECs were subjected to laminar or disturbed flow in flow-loading devices, the lipid order of their plasma membranes decreased in response to laminar flow and increased in response to disturbed flow. Laminar flow also decreased the lipid order of mitochondrial membranes and increased mitochondrial ATP production. In contrast, disturbed flow increased the lipid order of mitochondrial membranes and increased the release of H2O2 from the mitochondria. These results indicate that EC plasma membranes act as mechanosensors to shear stress and trigger changes in mitochondrial function.

Academic Significance and Societal Importance of the Research Achievements

本研究は、血管内皮細胞が血流をどのように感知し、細胞内に情報伝達するかを解明することを目的に、メカノセンサーとしての細胞形質膜とミトコンドリア機能とが密接に関連していることを始めて明らかにした。これまで、ミトコンドリアの活性がメカノセンシング機構に果たす役割を探る研究は殆ど例が無く、細胞内の微細構造とミトコンドリアATPと活性酸素シグナリングのリアルタイム解析を駆使して得られた結果は学術的に意義深い。また、メカノセンサーの本体が、層流が制御する血管系の恒常性維持と、乱流が惹起する血管病の発症の仕組みに果たす役割を解明したことは、血管病の予防や治療の基礎となる知見を与え、社会的意義がある。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (29 results)

All 2024 2023 2022 2021 Other

All Journal Article (7 results) (of which Peer Reviewed: 7 results,  Open Access: 7 results) Presentation (17 results) (of which Int'l Joint Research: 4 results,  Invited: 17 results) Remarks (5 results)

  • [Journal Article] Endothelial cells differentially sense laminar and disturbed flows by altering the lipid order of their plasma and mitochondrial membranes2023

    • Author(s)
      Yamamoto Kimiko、Shimogonya Yuji、Maeno Ryohei、Kawabe Kenshiroh、Ando Joji
    • Journal Title

      American Journal of Physiology-Cell Physiology

      Volume: 325 Issue: 6 Pages: C1532-C1544

    • DOI

      10.1152/ajpcell.00393.2023

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Endothelial cell malfunction in unruptured intracranial aneurysm lesions revealed using a 3D-casted mold2022

    • Author(s)
      Ono Isao、Abekura Yu、Kawashima Akitsugu、Oka Mieko、Okada Akihiro、Hara Shintaro、Miyamoto Susumu、Kataoka Hiroharu、Ishii Akira、Yamamoto Kimiko、Aoki Tomohiro
    • Journal Title

      Journal of Neuropathology and Experimental Neurology

      Volume: 82 Issue: 1 Pages: 49-56

    • DOI

      10.1093/jnen/nlac104

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] P2X4 receptor stimulation enhances MrgprB2-mediated mast cell activation and pseudoallergic reactions in mice2022

    • Author(s)
      Yoshida Kazuki、Tanihara Shota、Miyashita Yuki、Obayashi Kosuke、Ito Masa-aki、Yamamoto Kimiko、Imai Toshiyashu、Matsuoka Isao
    • Journal Title

      Scientific Reports

      Volume: 12 Issue: 1 Pages: 18613-18613

    • DOI

      10.1038/s41598-022-21667-6

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hemodynamic Forces, Endothelial Mechanotransduction, and Vascular Diseases2022

    • Author(s)
      Ando Joji、Yamamoto Kimiko
    • Journal Title

      Magnetic Resonance in Medical Sciences

      Volume: 21 Issue: 2 Pages: 258-266

    • DOI

      10.2463/mrms.rev.2021-0018

    • NAID

      130008166273

    • ISSN
      1347-3182, 1880-2206
    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Synergistic Cytokine Production by ATP and PGE2 via P2X4 and EP3 Receptors in Mouse Bone-Marrow-Derived Mast Cells2022

    • Author(s)
      Obayashi Kosuke、Yoshida Kazuki、Ito Masa-aki、Mori Tetsuya、Yamamoto Kimiko、Imai Toshiyashu、Matsuoka Isao
    • Journal Title

      Cells

      Volume: 11 Issue: 4 Pages: 616-616

    • DOI

      10.3390/cells11040616

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Functional lipidomics of vascular endothelial cells in response to laminar shear stress2021

    • Author(s)
      Hirata Tsuyoshi、Yamamoto Kimiko、Ikeda Kazutaka、Arita Makoto
    • Journal Title

      The FASEB Journal

      Volume: 35 Issue: 2 Pages: 1-13

    • DOI

      10.1096/fj.202002144r

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The ATP-hydrolyzing ectoenzyme E-NTPD8 attenuates colitis through modulation of P2X4 receptor-dependent metabolism in myeloid cells.2021

    • Author(s)
      Tani H, Li B, Kusu T, Okumura R, Nishimura J, Okuzaki D, Motooka D, Arakawa S, Yoshihara T, Ogino T, Tsai SH, Furuta Y, Muneta M, Nakamura S, Fukusaki E, Yamamoto K, Yagita H, Kayama H and Takeda K
    • Journal Title

      Proc. Natl. Acad. Sci. USA

      Volume: 118 Issue: 39 Pages: 1-10

    • DOI

      10.1073/pnas.2100594118

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 血管内皮の血流センシングにおける細胞膜とミトコンドリアの役割2024

    • Author(s)
      山本 希美子
    • Organizer
      第101回日本生理学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Emerging roles of Plasma Membranes and Mitochondria in Vascular Endothelial Mechanosensing2023

    • Author(s)
      Kimiko Yamamoto
    • Organizer
      The Gordon Research Conference 2023 on Biomechanics in Vascular Biology and Disease Integrating Vascular Mechanics, Biology and Medicine
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Roles of plasma membranes and mitochontria in vascular endothelial mechanosensing2023

    • Author(s)
      Kimiko Yamamoto
    • Organizer
      6th Japan-Switzerland Workshop on Biomechanics (JSB2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 血管内皮細胞の血流センシングに果たすミトコンドリアの役割2023

    • Author(s)
      山本 希美子
    • Organizer
      第31回日本血管生物医学学術集会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 血管内皮細胞において、細胞膜とミトコンドリアは血流刺激の感知とシグナル伝達を媒介するメカノセンサー複合体として働く2023

    • Author(s)
      山本 希美子
    • Organizer
      第46回日本分子生物学会年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Endothelial plasma membranes and mitochondria act as mechanosensory complexes that mediate sensing and signaling of shear stress2023

    • Author(s)
      山本 希美子
    • Organizer
      第61回日本生物物理学会年会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 血管内皮細胞のメカノセンシング機構に果たす細胞膜とミトコンドリアの役割2023

    • Author(s)
      山本 希美子、安藤 譲二
    • Organizer
      第75回日本細胞生物学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 血管内皮細胞のメカノセンシングにおける細胞膜とミトコンドリアの新たな役割2023

    • Author(s)
      山本 希美子、安藤 譲二
    • Organizer
      第62回日本生体医工学会大会
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] 血流センシングと脳動脈瘤形成の分子機構2023

    • Author(s)
      山本 希美子
    • Organizer
      第89回Blood Vessel Club
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] Vascular Mechanobiology: Molecular mechanisms of blood flow sensing and cerebral aneurysm development2023

    • Author(s)
      Kimiko Yamamoto
    • Organizer
      International Symposium on Mechanobiology for Human Health
    • Related Report
      2022 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 血流刺激に対する内皮ミトコンドリア応答の生理的・病因的役割2022

    • Author(s)
      山本希美子
    • Organizer
      第54回日本動脈硬化学会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 内皮細胞のミトコンドリアを介した血流応答と動脈硬化2022

    • Author(s)
      山本希美子、安藤譲二
    • Organizer
      第61回日本生体医工学会大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 内皮細胞のミトコンドリアを介した血流センシングの生理的・病態的役割2022

    • Author(s)
      山本希美子
    • Organizer
      第85回Blood Vessel Club
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Emerging roles of membrane lipids and mitochondria in endothelial cell mechanosensing2021

    • Author(s)
      Kimiko Yamamoto
    • Organizer
      ESCHM-ISCH-ISB 2021
    • Related Report
      2021 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 内皮細胞の血流センシングにおける膜脂質とミトコンドリアの新しい役割2021

    • Author(s)
      山本希美子
    • Organizer
      臨床エピジェネティクス研究会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 細胞膜メカノセンサーを介した血管リモデリング機構2021

    • Author(s)
      山本希美子、安藤譲二
    • Organizer
      第60回日本生体医工学会大会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 血流シグナル伝達の新しい仕組み:内皮細胞膜とミトコンドリアの連携プレイ2021

    • Author(s)
      山本希美子
    • Organizer
      第80回Blood Vessel Club
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Remarks] 東京大学 大学院医学系研究科 システム生理学教室

    • URL

      https://square.umin.ac.jp/~bme/

    • Related Report
      2023 Annual Research Report
  • [Remarks] AMED 革新的先端研究開発支援事業:AMED-CREST 研究代表者

    • URL

      https://www.amed.go.jp/program/list/16/02/001_08.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] JST さきがけ:研究代表者

    • URL

      https://www.jst.go.jp/kisoken/presto/complete/sysbio/j/sakigake/saki_15.html

    • Related Report
      2023 Annual Research Report
  • [Remarks] 東京大学 大学院医学系研究科 システム生理学

    • URL

      https://square.umin.ac.jp/bme/

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report
  • [Remarks] Lab. of System Physiology, The Univ. of Tokyo

    • URL

      https://square.umin.ac.jp/bme/research_Eng.html

    • Related Report
      2022 Annual Research Report 2021 Annual Research Report

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Published: 2021-04-28   Modified: 2025-01-30  

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