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Mechanisms of endothelial hematopoietic transition and pulmonary vascular remodelling in severe pulmonary hypertension

Research Project

Project/Area Number 19K17626
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 53030:Respiratory medicine-related
Research InstitutionChiba University

Principal Investigator

Sekine Ayumi  千葉大学, 真菌医学研究センター, 特任助教 (30837414)

Project Period (FY) 2019-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2022: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2021: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords内皮血球転換 / 組織幹細胞 / 血管内皮細胞 / 血管新生 / 低酸素応答 / 肺高血圧症 / 間質性肺炎 / 肺循環障害 / 呼吸器組織幹細胞 / 血管リモデリング / 再生医療
Outline of Research at the Start

実臨床において肺高血圧症(PH)の原因として肺動脈性、肺血栓塞栓性によるものが多数を占めている。発症には組織の線維化や血管新生(Angiogenesis)を含む肺動脈の異常リモデリングが関与し、その病態は未だ不明な点が多い難治性疾患である。近年、肺高血圧症や急性肺障害等の疾患モデルにおける組織障害と再生応答時の肺構成細胞レベルの解析にて内皮、間葉間の相互の形質転換(EndMT)が病態形成と組織修復に関与することが明らかになった。本研究では未だ検討が十分では内皮血球転換の分子メカニズムを、複数の肺高血圧症モデルマウスを使用して網羅的に解析し新規治療シーズ探索に繋げていくことを目的とする。

Outline of Final Research Achievements

We investigated that the involvement of endothelial haemopoietic transition = EHT in pathogenesis in a model of pulmonary hypertension, focusing on the transcription factor Runx1. FACS, qPCR, histopathology and RNA sequencing of cultured endothelial cells were performed in the lungs of mice exposed to chronic hypoxia and chronic hypoxia plus Sugen5416 (VEGFR inhibitor). The EHT-positive cells, defined as Runx1+VE-cadherin+CD31+CD45- cells, were up-regulated reflecting to disease progression, and were highly distributed in capillary areas, suggesting that EHT were involved in vascular remodeling from the early stage of stimulation.

Academic Significance and Societal Importance of the Research Achievements

肺は膨大な毛細血管床におけるガス交換を通じて恒常的に組織の再生修復を繰り返している。研究期間中に新型コロナ感染症の感染拡大期に入り、急速進行性に強い線維化や凝固異常が起こる経過に直面して呼吸器系における免疫応答の重要性を再認識した。本成果から血管内皮細胞からRunx1を介して免疫応答を担う造血系細胞を産生することができれば、内因性の自己組織修復が可能となる。この知見は肺高血圧症のみならず、感染症、肺線維症、肺がん等の難治性呼吸器疾患全体に応用・展開できると考えられた。将来的には核酸医薬を用いた全く新しい革新的ワクチン療法の開発に繋がると見通しており、社会的に非常にインパクトが大きいと考える。

Report

(4 results)
  • 2022 Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (20 results)

All 2021 2020 2019

All Journal Article (8 results) (of which Int'l Joint Research: 8 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (11 results) (of which Int'l Joint Research: 2 results,  Invited: 2 results) Book (1 results)

  • [Journal Article] Vascular involvement in chronic thromboembolic pulmonary hypertension is associated with spirometry obstructive impairment.2021

    • Author(s)
      Yanagisawa A, Naito A, Jujo-Sanada T, Tanabe N, Ishida K, Matsumiya G, Suda R, Kasai H, Sekine A, Sugiura T, Shigeta A, Sakao S, Tatsumi K, Suzuki T.
    • Journal Title

      BMC Pulm Med.

      Volume: 21 Issue: 1 Pages: 407-407

    • DOI

      10.1186/s12890-021-01779-x

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A case of pulmonary arterial hypertension with V/Q <scp>SPECT</scp> / <scp>CT</scp> that showed localized uptake of <scp>99mTc</scp> just below the pleura and a unique distribution2021

    • Author(s)
      Suzuki Yuri、Sekine Ayumi、Nishiyama Akira、Sugiura Toshihiko、Tanabe Nobuhiro、Isaka Yuri、Hashimoto Yaeko、Okaya Tadasu、Kuriyama Ayaka、Nagata Jun、Shigeta Ayako、Sakao Seiichiro、Tatsumi Koichiro、Suzuki Takuji
    • Journal Title

      Respirology Case Reports

      Volume: 9 Issue: 10 Pages: 847-847

    • DOI

      10.1002/rcr2.847

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Characteristics of patients meeting the new definition of pre-capillary pulmonary hypertension (Nice 2018) in a single Japanese pulmonary hypertension center.2021

    • Author(s)
      Yamamoto K, Tanabe N, Takahashi Y, Naito A, Sekine A, Suda R, Jujo Sanada T, Sugiura T, Shigeta A, Sakao S, Tatsumi K.
    • Journal Title

      BMC Pulm Med.

      Volume: 21 Issue: 1 Pages: 260-260

    • DOI

      10.1186/s12890-021-01623-2

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nocturnal Hypoxemia and High Circulating TNF-α Levels in Chronic Thromboembolic Pulmonary Hypertension2020

    • Author(s)
      Naito Akira、Sakao Seiichiro、Terada Jiro、Iwasawa Shunichiro、Jujo Sanada Takayuki、Suda Rika、Kasai Hajime、Sekine Ayumi、Nishimura Rintaro、Sugiura Toshihiko、Shigeta Ayako、Tanabe Nobuhiro、Tatsumi Koichiro
    • Journal Title

      Internal Medicine

      Volume: 59 Issue: 15 Pages: 1819-1826

    • DOI

      10.2169/internalmedicine.4458-20

    • NAID

      130007883962

    • ISSN
      0918-2918, 1349-7235
    • Year and Date
      2020-08-01
    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Reply to letter to Editor2020

    • Author(s)
      Yamamoto Keiko、Nishimura Rintaro、Kato Fumiaki、Naito Akira、Suda Rika、Sekine Ayumi、Jujo Takayuki、Shigeta Ayako、Sakao Seiichiro、Tanabe Nobuhiro、Tatsumi Koichiro
    • Journal Title

      International Journal of Cardiology

      Volume: 307 Pages: 164-164

    • DOI

      10.1016/j.ijcard.2020.03.015

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The extent of enlarged bronchial arteries is not correlated with the development of reperfusion pulmonary edema after pulmonary endarterectomy in patients with chronic thromboembolic pulmonary hypertension2020

    • Author(s)
      Ikubo Yumiko、Sanada Takayuki J.、Tanabe Nobuhiro、Naito Akira、Shoji Hiroki、Nagata Jun、Kuriyama Ayaka、Yanagisawa Asako、Kobayashi Takayuki、Yamamoto Keiko、Kasai Hajime、Suda Rika、Sekine Ayumi、Sugiura Toshihiko、Shigeta Ayako、Ishida Keiichi、Sakao Seiichiro、Masuda Masahisa、Tatsumi Koichiro
    • Journal Title

      Pulmonary Circulation

      Volume: 10 Issue: 4 Pages: 1-5

    • DOI

      10.1177/2045894020968677

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Protective role of endothelial progenitor cells stimulated by riociguat in chronic thromboembolic pulmonary hypertension2020

    • Author(s)
      Yamamoto Keiko、Nishimura Rintaro、Kato Fumiaki、Naito Akira、Suda Rika、Sekine Ayumi、Jujo Takayuki、Shigeta Ayako、Sakao Seiichiro、Tanabe Nobuhiro、Tatsumi Koichiro
    • Journal Title

      International Journal of Cardiology

      Volume: 299 Pages: 263-270

    • DOI

      10.1016/j.ijcard.2019.07.017

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Selective BMP-9 Inhibition Partially Protects Against Experimental Pulmonary Hypertension2019

    • Author(s)
      Tu Ly、Desroches-Castan Agn?s、Mallet Christine、Guyon Laurent、Cumont Am?lie、Phan Carole、Robert Florian、Thuillet Rapha?l、Bordenave Jennifer、Sekine Ayumi、Huertas Alice、Ritvos Olli、Savale Laurent、Feige Jean-Jacques、Humbert Marc、Bailly Sabine、Guignabert Christophe
    • Journal Title

      Circulation Research

      Volume: 124 Issue: 6 Pages: 846-855

    • DOI

      10.1161/circresaha.118.313356

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] V-A ECMO 導入困難が想定される肺高血圧症患者の肺移植周術期マネージメント2021

    • Author(s)
      関根亜由美,川崎剛,北原慎介,重田文子, 坂尾誠一郎 稲毛輝長, 和田啓伸, 鈴木秀海, 中島崇裕,吉野一郎
    • Organizer
      第37回日本心肺移植研究会
    • Related Report
      2021 Research-status Report 2020 Research-status Report
  • [Presentation] 特発性肺動脈性肺高血圧症における自己抗体陽性例の予後と特徴の解析2021

    • Author(s)
      酒寄 雅史,関根 亜由美,坂尾 誠一郎, 須田 理香,内藤 亮,杉浦 寿彦,重田 文子,田邊 信宏,巽 浩一郎
    • Organizer
      第61回日本呼吸器学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] Characteristics and prognosis of autoantibody-positive patients with idiopathic pulmonary arterial hypertension2021

    • Author(s)
      Masashi Sakayori, Ayumi Sekine,Nobuhiro Tanabe,Akira Naito,Takayuki Jujo,Toshihiko Sugiura,Ayako Shigeta,Seiichiro Sakao,Koichiro Tatsumi
    • Organizer
      ERS International Congress 2021 in Barcelona, Spain
    • Related Report
      2021 Research-status Report
    • Int'l Joint Research
  • [Presentation] 長期待機が見込まれる移植待機中患者のマネージメントにおける問題点 循環不全をきたした特発性肺動脈性肺高血圧症(IPAH)の一例から考える2020

    • Author(s)
      川崎 剛, 関根 亜由美, 北原 慎介, 岡谷 匡, 重田 文子, 坂尾 誠一郎, 稲毛 輝長, 和田 啓伸, 鈴木 秀海, 中島 崇裕, 吉野 一郎
    • Organizer
      第56回日本移植学会総会
    • Related Report
      2020 Research-status Report
  • [Presentation] アートとサイエンスの間で見つけた知の宝石箱~私のパリ研究留学~ 第233回日本呼吸器学会関東地方会 男女共同参画セッション特別企画2019

    • Author(s)
      関根亜由美
    • Organizer
      第233回日本呼吸器学会関東地方会 男女共同参画セッション特別企画
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] Selective BMP-9 Inhibition Partially Protects Against Experimental Pulmonary Hypertension2019

    • Author(s)
      SEKINE.A
    • Organizer
      第59回 日本呼吸器学会学術講演会 English Poster Discussion (Basic:Lung Homeostasis)
    • Related Report
      2019 Research-status Report
  • [Presentation] Does the total cross-sectional area of bronchial arteries predict the extent of persistent PH after endarterectomy?2019

    • Author(s)
      SEKINE.A
    • Organizer
      European Respiratory Society International Congress 2019 Madrid
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] 呼吸器疾患を血管内皮細胞から考える-Prom1陽性血管内皮細胞の動態と機能-2019

    • Author(s)
      関根亜由美
    • Organizer
      第28回 Pneumo Forum
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 多発肺動静脈瘻に前毛細血管性肺高血圧症を合併した一例2019

    • Author(s)
      今井俊 関根亜由美
    • Organizer
      第237回 日本呼吸器学会関東地方会
    • Related Report
      2019 Research-status Report
  • [Presentation] 多発肺動静脈瘻に前毛細血管性肺高血圧症を合併した一例2019

    • Author(s)
      今井俊 関根亜由美
    • Organizer
      第12回 呼吸機能イメージング研究会
    • Related Report
      2019 Research-status Report
  • [Presentation] 肺血流SPECT/CTで胸膜直下に限局した集積と特異な分布を呈した肺動脈性肺高血圧症の一例2019

    • Author(s)
      鈴木友里 関根亜由美
    • Organizer
      第12回 呼吸機能イメージング研究会
    • Related Report
      2019 Research-status Report
  • [Book] 特集 今の流れに乗り遅れない!プライマリ・ケアでの呼吸器疾患の診かた・薬の使いかた 覚えておきたいその他の疾患2020

    • Author(s)
      Medicina 57(1) 148 - 151 2020年1月
    • Total Pages
      4
    • Publisher
      医学書院
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2024-01-30  

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