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Involvement of protein kinase D in pulmonary hypertension

Research Project

Project/Area Number 20K09225
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55050:Anesthesiology-related
Research InstitutionYokohama City University

Principal Investigator

MIZUNO Yusuke  横浜市立大学, 附属病院, 准教授 (80433192)

Co-Investigator(Kenkyū-buntansha) 菅原 陽  横浜市立大学, 附属病院, 助教 (00596413)
古賀 資和  横浜市立大学, 医学部, 助教 (00637233)
Project Period (FY) 2020-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2022: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2021: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords肺高血圧 / protein kinase d / MYPT1 / Protein kinase D / 平滑筋 / MYPT1 / protein kinase D / 血管平滑筋 / protain kinase D / PKC / 血管収縮 / ROCK / 核酸医薬
Outline of Research at the Start

Protein kinase D (PKD)は細胞骨格・運動・増殖等において主要な役割を担い、近年は循環障害の新たな治療標的とされているが、血管機能への関与は不明であった。我々はPKDが血管張力、循環を制御していることを見出し,更にPH患者の肺組織でPKD発現の亢進が報告されたことから,PKDはPHを含む様々な血管障害に関与しているとのではと疑われた。本研究はPH動物モデル、肺血管平滑筋細胞を用い、PKDのPH発症への関与を解明し、更にsiRNA分子標的薬のPKD抑制によるPH治療のスキームの確立を目指す。

Outline of Final Research Achievements

In rats with monocrotaline (MCT)-induced pulmonary hypertension, enhanced phosphorylation and increased sensitivity of pulmonary arterial PKD1 were observed. Inhibition of PKD resulted in a reduction in pulmonary arterial pressure and an increase in cardiac output. Findings from isolated pulmonary vessels and pulmonary artery smooth muscle cells suggested that PKD contributes to pulmonary vasoconstriction via phosphorylation of MYPT1 and MLC. Although siRNA was functional at the cellular level, optimal conditions for in vivo delivery were not established in this study. Nevertheless, our results suggest that pharmacological inhibition of PKD may be a promising therapeutic approach for pulmonary hypertension.

Academic Significance and Societal Importance of the Research Achievements

肺高血圧(PH)合併患者の周術期の心血管のイベントリスクが高く、依然として高度な管理が要求されている。PHの発症機序、増悪のメカニズム、その原因解明に基づく管理法の開発は十分ではない。新たな肺高血圧の機序の解明は将来的な臨床貢献につながり、その意義は大きい。本研究では機序の解明のみならず、生体でも肺高血圧の低減を示しており、今後の研究につながるものと考えられた。

Report

(6 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (3 results)

All 2025 2024 2021

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (2 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Role of protein kinase D1 in vasoconstriction and haemodynamics in rats2024

    • Author(s)
      Sugawara Yoh、Mizuno Yusuke、Oku Shinya、Sawada Yuri、Goto Takahisa
    • Journal Title

      Microvascular Research

      Volume: 152 Pages: 104627-104627

    • DOI

      10.1016/j.mvr.2023.104627

    • Related Report
      2024 Annual Research Report 2023 Research-status Report
    • Peer Reviewed
  • [Presentation] Association Between Hospital Volume and Outcomes of Surgical Procedures for Carotid Stenosis in Japan2025

    • Author(s)
      Yusuke Mizuno, Daisuke Shinjo, Norihiko Inoue, Kiyohide Fushimi
    • Organizer
      International Stroke
    • Related Report
      2024 Annual Research Report
    • Int'l Joint Research
  • [Presentation] モノクロタリン誘発肺高血圧症ラットの肺動脈におけるprotein kinase Dの役割の解明2021

    • Author(s)
      奥 真哉、長嶺 祐介、菅原 陽、水野 祐介、後藤 隆久
    • Organizer
      日本心臓麻酔学会学術集会
    • Related Report
      2021 Research-status Report

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Published: 2020-04-28   Modified: 2026-01-16  

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