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The study of the mechanisms of pulmonary hypertension based on abnormal MCU/NCLX transport

Research Project

Project/Area Number 19K16509
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 48030:Pharmacology-related
Research InstitutionFukuoka University

Principal Investigator

Tagashira Hideaki  福岡大学, 医学部, 准教授 (90735028)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywordsイオン輸送体 / 肺高血圧症 / ミトコンドリア / トランスポーター
Outline of Research at the Start

肺動脈性肺高血圧症(PAH)は、肺小動脈が狭窄し、平均肺動脈圧が25 mmHg以上と高い状態が続くことにより右心不全に至る難治性の疾患である。現在、使用されているPAH治療薬は、予後の十分な改善には至っておらず、新規治療薬の開発が求められている。本研究では、肺血管平滑筋細胞のミトコンドリアCa2+輸送バランス異常に基づく肺高血圧発症機序の解明を目的として、各種ミトコンドリアCa2+輸送体遺伝子改変マウスおよび薬理学的ツールを駆使したin vivo/in vitro実験を実施し、肺血管平滑筋細胞のミトコンドリアCa2+輸送バランス異常と肺高血圧発症の因果関係を明確にすることを目的とする。

Outline of Final Research Achievements

Pulmonary arterial hypertension (PAH) is a severe and progressive disease that causes right heart failure. The pathogenesis of PAH is generally characterized by vasoconstriction, upregulated proliferation, migration, and pulmonary vascular remodeling in lung tissue. Recent studies using genetic analyses and experimental models have suggested that the hypercontraction of pulmonary arteries induced by Ca2+ signaling abnormality may be involved in the pathogenesis of PAH. However, the pathophysiological mechanisms of PAH via Ca2+ transporters are not clearly understood. Recently, MCU and NCLX have been identified as mitochondrial Ca2+ transporters. However, the physiological and pathophysiological role of these mitochondrial Ca2+ transporters are still unclear. In this study, we generated mitochondrial Ca2+ transporter gene altered mice and investigated the relationship between mitochondrial Ca2+ transporters and the pathogenesis of hypoxia-induced pulmonary hypertension.

Academic Significance and Societal Importance of the Research Achievements

これまでに、PAHの原因としてKCNK3(TASK1)やKv1.5の機能低下および非選択的陽イオンチャネルTRPC6の発現増加等が報告されており、PAHの発症・増悪には細胞膜K+チャネルやCa2+チャネルが関与することが示唆されている。本研究は、これまでに報告されている細胞膜チャネルではなく、細胞内オルガネラに発現しているミトコンドリアCa2+輸送体の各種遺伝子改変マウスならびに薬理学的ツールを用いて、肺血管平滑筋細胞のミトコンドリアCa2+輸送バランス異常による肺高血圧発症への関与を明らかとしたものである。肺血管過収縮や肺血管リモデリングの新しい病態機序として極めて興味深いものと考えられる。

Report

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

    (14 results)

All 2022 2021 2020 2019

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results)

  • [Journal Article] Lymphangiogenesis and angiogenesis rescue murine ischemic hindlimb via transient receptor potential vanilloid 42021

    • Author(s)
      Yamada H, Sakata N, Tanaka T, Tagashira H, Yoshimatsu G, Kawakami R, Wada H, Iwamoto T, Kodama S
    • Journal Title

      Journal of Pharmacological Science

      Volume: - Issue: 4 Pages: 244-248

    • DOI

      10.1016/j.jphs.2021.04.009

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Na+/Ca2+ exchanger mediates cold Ca2+ signaling conserved for temperature-compensated circadian rhythms2021

    • Author(s)
      Kon Naohiro、Wang Hsin-tzu、Kato Yoshiaki S.、Uemoto Kyouhei、Kawamoto Naohiro、Kawasaki Koji、Enoki Ryosuke、Kurosawa Gen、Nakane Tatsuto、Sugiyama Yasunori、Tagashira Hideaki、Endo Motomu、Iwasaki Hideo、Iwamoto Takahiro、Kume Kazuhiko、Fukada Yoshitaka
    • Journal Title

      Science Advances

      Volume: 7 Issue: 18 Pages: 1-12

    • DOI

      10.1126/sciadv.abe8132

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Genetic knockout and pharmacologic inhibition of NCX1 attenuate hypoxia-induced pulmonary arterial hypertension.2020

    • Author(s)
      1.Nagata A, Tagashira H, Kita S, Kita T, Nakajima N, Abe K, Iwasaki A, Iwamoto T.
    • Journal Title

      Biochem. Biophys. Res. Commun.

      Volume: 529(3) Issue: 3 Pages: 793-798

    • DOI

      10.1016/j.bbrc.2020.06.045

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Sodium-calcium exchanger 1 is the key molecule for urinary potassium excretion against acute hyperkalemia2020

    • Author(s)
      Shoda W, Nomura N, Ando F, Tagashira H, Iwamoto T, Ohta A, Isobe K, Mori T, Susa K, Sohara E, Rai T, Uchida S.
    • Journal Title

      PLoS One.

      Volume: 15(6) Issue: 6 Pages: 0235360-0235360

    • DOI

      10.1371/journal.pone.0235360

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Na+/Ca2+交換輸送体の構造・機能の解明から治療への応用2019

    • Author(s)
      岩本 隆宏, 田頭 秀章, 喜多 紗斗美
    • Journal Title

      医学のあゆみ

      Volume: 271 Pages: 42-48

    • Related Report
      2019 Research-status Report
  • [Presentation] TRPM7/CNNM2遺伝子改変マウスを用いたMg代謝異常による心血管病態解析2022

    • Author(s)
      田頭秀章、喜多紗斗美、岩本隆宏
    • Organizer
      日本薬学会第142年会
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] 血管平滑筋NCX1阻害処置は低酸素誘発肺高血圧を改善する2021

    • Author(s)
      田頭秀章、喜多紗斗美、阿部弘太郎、岩本隆宏
    • Organizer
      第5回臨床薬理学会 九州・沖縄地方会
    • Related Report
      2021 Annual Research Report
  • [Presentation] Vascular smooth muscle NCX1 as a potential drug target for pulmonary arterial hypertension2021

    • Author(s)
      Hideaki Tagashira, Asahi Nagata, Satomi Kita, Kohtaro Abe, Takahiro Iwamoto
    • Organizer
      第85回日本循環器学会学術総会
    • Related Report
      2020 Research-status Report
    • Invited
  • [Presentation] The pathophysiological role of vascular smooth muscle NCX1 for pulmonary arterial hypertension2021

    • Author(s)
      Hideaki Tagashira, Asahi Nagata, Tomo Kita, Satomi Kita, Takahiro Iwamoto
    • Organizer
      65th Biophysical Society Annual Meeting
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research
  • [Presentation] Characteristics of sudden death in cardiac-specific conditional NCX1 knockout mice2021

    • Author(s)
      Hideaki Tagashira, Satomi Kita, Takahiro Iwamoto
    • Organizer
      第94回日本薬理学会年会
    • Related Report
      2020 Research-status Report
  • [Presentation] 血管平滑筋NCX1を介したCa2+シグナル異常は低酸素誘発性肺高血圧の発症に関与する2020

    • Author(s)
      田頭秀章、永田旭、喜多知、阿部弘太郎、岩本隆宏
    • Organizer
      第49回日本心脈管作動物質学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Development of a new model mouse for Mg metabolism disorder targeted for functional suppressing TRPM72020

    • Author(s)
      Hideaki Tagashira, Tomo Kita, Tomohiro Numata, Satomi Kita, Takahiro Iwamoto.
    • Organizer
      第93回日本薬理学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] 低酸素誘発肺高血圧発症に血管平滑筋NCX1を介したCa2+シグナル異常が関与する2019

    • Author(s)
      田頭秀章、喜多紗斗美、喜多知、岩本隆宏
    • Organizer
      第4回黒潮カンファレンス
    • Related Report
      2019 Research-status Report
  • [Presentation] Vascular smooth muscle NCX1 is involved in the development of hypoxia-induced pulmonary arterial hypertension2019

    • Author(s)
      Hideaki Tagashira, Asahi Nagata, Satomi Kita, Tomo Kita, Akinori Iwasaki, Kohtaro Abe, Takahiro Iwamoto.
    • Organizer
      The 50th NIPS International Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research

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

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