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Novel Therapeutic Targets for Pulmonary Hypertension Based on Lesion Formation Mechanisms

Research Project

Project/Area Number 22K07843
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 52050:Embryonic medicine and pediatrics-related
Research InstitutionMie University

Principal Investigator

Sawada Hirofumi  三重大学, 医学部附属病院, 准教授 (30362354)

Co-Investigator(Kenkyū-buntansha) 丸山 一男  鈴鹿医療科学大学, 保健衛生学部, 教授 (20181828)
西村 有平  三重大学, 医学系研究科, 教授 (30303720)
三谷 義英  三重大学, 医学部附属病院, 准教授 (60273380)
Project Period (FY) 2022-04-01 – 2025-03-31
Project Status Completed (Fiscal Year 2024)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2024: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords肺高血圧 / 肺動脈性肺高血圧 / BMPR2遺伝子変異 / 骨形成因子受容体2型 / 動物モデル / ゲノム編集 / ラット / 閉塞性肺血管病変
Outline of Research at the Start

肺動脈性肺高血圧(PAH)は、骨形成因子受容体2型(BMPR2)遺伝子変異等を基盤として発症する難治性予後不良疾患である。本症の肺血管病変の形成機序については未解明であり、根本的な治療はない。今回、主要なリスク遺伝子であるBMPR2にCRISPR/Cas9を用いて患者と同様の変異をラットに導入し、ヒトPAH類似の進行血管病変をもつPAHモデルとヒトPAH同様の致死的な経過をたどる2つのモデルを用い、肺と心筋でトランスクリプトーム解析を行い、標的分子を同定し発症機序に基づく新たな治療標的の開発を目指す。

Outline of Final Research Achievements

We generated rats with a frameshift mutation in Exon1 of the Bmpr2 gene using CRISPR/Cas9. Mutant rats showed significantly attenuated BMPR2 signaling; 7-week-old rats were subcutaneously treated with monocrotaline and evaluated 3-4 weeks after administration, and (TAPSE, a right ventricular function index) was reduced in Bmpr2 mutant rats. In addition, when the presence of noncompensated right heart failure was evaluated, the percentage of noncompensated right heart failure was higher in mutant rats at 3-4 weeks after monocrotaline administration. These findings suggest that the Bmpr2 mutation worsens right ventricular function only during the lesion progression phase (3-4 weeks post-dose) of the monocrotaline-induced progressive PH model.

Academic Significance and Societal Importance of the Research Achievements

肺高血圧の病態解明と治療標的の開発には、動物モデルを用いた研究が大きな役割を果たしてきたが、遺伝子改変マウスを用い病態の解析が行われた。植物毒素モノクロタリンや血管内皮増殖因子受容体阻害剤SU5416 (Sugen)/低酸素により誘導される肺高血圧モデルは、ラットでのみ再現性よく作成されるモデルである。モノクロタリンモデルでは、炎症の亢進や右心不全、致死性が再現される。遺伝子改変技術のラットモデルへの導入報告は国際的にも限られ、肺高血圧研究に日本発の新たな研究体系をもたらす。

Report

(4 results)
  • 2024 Annual Research Report   Final Research Report ( PDF )
  • 2023 Research-status Report
  • 2022 Research-status Report
  • Research Products

    (19 results)

All 2024 2023 2022

All Journal Article (10 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 10 results,  Open Access: 8 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 9 results)

  • [Journal Article] Persistent pulmonary hypertension in children after apparent resolution of ultrasound-defined pulmonary hypertension associated with bronchopulmonary dysplasia2024

    • Author(s)
      Takeoka Mami、Sawada Hirofumi、Mitani Yoshihide、Ohashi Hiroyuki、Yodoya Noriko、Ohya Kazunobu、Tsuboya Naoki、Harada Tomoya、Hirayama Masahiro
    • Journal Title

      European Journal of Pediatrics

      Volume: 184 Issue: 1 Pages: 26-26

    • DOI

      10.1007/s00431-024-05843-6

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] C?C Motif chemokine receptor-2 blockade ameliorates pulmonary hypertension in rats and synergizes with a pulmonary vasodilator2024

    • Author(s)
      Tsuboya Naoki、Sawada Hirofumi、Mitani Yoshihide、Oshita Hironori、Ohya Kazunobu、Takeoka Mami、Kabwe Jane Chanda、Miyasaka Yoshiki、Ito Hiromasa、Yodoya Noriko、Ohashi Hiroyuki、Maruyama Junko、Okamoto Ryuji、Mashimo Tomoji、Dohi Kaoru、Nishimura Yuhei、Maruyama Kazuo、Hirayama Masahiro
    • Journal Title

      Cardiovascular Research

      Volume: - Issue: 7 Pages: 244-244

    • DOI

      10.1093/cvr/cvae244

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hybrid treat-and-repair strategy for large patent ductus arteriosus: a proof-of-concept case report2024

    • Author(s)
      Tsuboya Naoki、Mitani Yoshihide、Ohashi Hiroyuki、Sawada Hirofumi、Hirayama Masahiro
    • Journal Title

      European Heart Journal - Case Reports

      Volume: 8 Issue: 8 Pages: 354-354

    • DOI

      10.1093/ehjcr/ytae354

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] School electrocardiography screening program prompts the detection of otherwise unrecognized atrial septal defect in children in Japan2024

    • Author(s)
      Yodoya Noriko、Sawada Hirofumi、Mitani Yoshihide、Ohashi Hiroyuki、Tsuboya Naoki、Ohya Kazunobu、Takeoka Mami、Hayakawa Hidetoshi、Hirayama Masahiro
    • Journal Title

      Frontiers in Pediatrics

      Volume: 12 Pages: 1396853-1396853

    • DOI

      10.3389/fped.2024.1396853

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bilateral pulmonary artery banding facilitates the systemic ventricular outflow tract growth for biventricular and univentricular repair candidates of complex arch anomaly2024

    • Author(s)
      Yamasaki Takato、Umezu Kentaro、Toba Shuhei、Ishikawa Renta、Bessho Saki、Ito Hisato、Shomura Yu、Ohashi Hiroyuki、Sawada Hirofumi、Mitani Yoshihide、Shimpo Hideto、Takao Motoshi
    • Journal Title

      Heart and Vessels

      Volume: 39 Issue: 10 Pages: 891-898

    • DOI

      10.1007/s00380-024-02412-7

    • Related Report
      2024 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Role of BMPR2 Mutation in the Development of RV Failure in Rat Experimental Pulmonary Hypertension K2023

    • Author(s)
      azunobu Ohya, Hirofumi Sawada, Yoshihide Mitani, NAOKI TSUBOYA, Mami Takeoka, Noriko Yodoya, Hiroyuki Ohashi, Hiromasa Ito, Ryuji Okamoto, Kaoru Dohi, Tomoji Mashimo, Kazuo Maruyama and Masahiro Hirayama
    • Journal Title

      Circulation

      Volume: 148 Issue: Suppl_1

    • DOI

      10.1161/circ.148.suppl_1.17226

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] Abstract 17665: School Electrocardiography Screening Program Prompts the Detection of Otherwise Unrecognized Atrial Septal Defect in Children in Japan2023

    • Author(s)
      Yodoya Noriko、Sawada Hirofumi、Mitani Yoshihide、Ohashi Hiroyuki、TSUBOYA NAOKI、Ohya Kazunobu、Takeoka Mami、Hirayama Masahiro
    • Journal Title

      Circulation

      Volume: 148 Issue: Suppl_1

    • DOI

      10.1161/circ.148.suppl_1.17665

    • Related Report
      2023 Research-status Report
    • Peer Reviewed
  • [Journal Article] Perinatal hypoxia aggravates occlusive pulmonary vasculopathy in SU5416/hypoxia-treated rats later in life2022

    • Author(s)
      Oshita H, Sawada H, Mitani Y, Tsuboya N, Kabwe JC, Maruyama J, Yusuf A, Ito H, Okamoto R, Otsuki S, Yodoya N, Ohashi H, Oya K, Kobayashi Y, Kobayashi I, Dohi K, Nishimura Y, Saitoh S, Maruyama K, Hirayama M
    • Journal Title

      Am J Physiol Lung Cell Mol Physiol. 2022 Aug 1;323(2):L178-L192.

      Volume: 323 Issue: 2 Pages: 178-192

    • DOI

      10.1152/ajplung.00422.2021

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CRISPR-mediated Bmpr2 point mutation exacerbates late pulmonary vasculopathy and reduces survival in rats with experimental pulmonary hypertension2022

    • Author(s)
      Kabwe JC, Sawada H, Mitani Y, Oshita H, Tsuboya N, Zhang E, Maruyama J, Miyasaka Y, Ko H, Oya K, Ito H, Yodoya N, Otsuki S, Ohashi H, Okamoto R, Dohi K, Nishimura Y, Mashimo T, Hirayama M, Maruyama K.
    • Journal Title

      Respir Res.

      Volume: ;23 Issue: 1 Pages: 1-22

    • DOI

      10.1186/s12931-022-02005-w

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Lung damage created by high tidal volume ventilation in rats with monocrotaline-induced pulmonary hypertension2022

    • Author(s)
      Masako Kawai 1 2 , Erquan Zhang 1 3 , Jane Chanda Kabwe , Amphone Okada , Junko Maruyama , Hirofumi Sawada , Kazuo Maruyama
    • Journal Title

      BMC Pulmonary Medicine

      Volume: 78 Issue: 1 Pages: 1-13

    • DOI

      10.1186/s12890-022-01867-6

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Therapeutic insights into pulmonary vasculopathy and RV failure in BMPR2 mutation carriers: learnings from Bmpr2 mutant rat2024

    • Author(s)
      Hirofumi Sawada
    • Organizer
      第88回日本循環器学会学術集会2024 神戸
    • Related Report
      2024 Annual Research Report
    • Invited
  • [Presentation] ゲノム編集ラットモデルを用いた肺高血圧研究2024

    • Author(s)
      澤田博文
    • Organizer
      第17回 ラットリソースリサーチ研究会
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] 肺高血圧の動物モデル2024

    • Author(s)
      澤田博文
    • Organizer
      日本小児循環器学会第15回教育セミナーAdvanced Course
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] Mild pulmonary hypertension (mPAP:21-24mmHg) is highly prevalent in children with developmental lung disorders and associated with impaired lung vascular growth2024

    • Author(s)
      Hirofumi Sawada
    • Organizer
      The 88th Annual Scientific Meeting of the Japanese Circulation Society
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Therapeutic insights into pulmonary vasculopathy and RV failure in BMPR2 mutation carriers: learnings from Bmpr2 mutant rat model2024

    • Author(s)
      Hirofumi Sawada
    • Organizer
      The 88th Annual Scientific Meeting of the Japanese Circulation Society
    • Related Report
      2023 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] 周産期肺障害に伴う慢性肺高血圧  -肺血行動態と血管造影でみるDevelopmental Lung Disorders-2023

    • Author(s)
      澤田博文
    • Organizer
      第59回日本周産期・新生児医学会 学術集会
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] 新生児慢性肺疾患に伴う肺高血圧の肺血行動態評価  -成人期を見据えた長期管理に向けて-2023

    • Author(s)
      澤田博文
    • Organizer
      第67回日本新生児成育医学会
    • Related Report
      2023 Research-status Report
    • Invited
  • [Presentation] 育セッション 「一般病院で診る肺高血圧」 小児期PAH - 初期診断のポイント -2023

    • Author(s)
      澤田博文
    • Organizer
      第87回日本循環器学会学術集会
    • Related Report
      2022 Research-status Report
    • Invited
  • [Presentation] Effects of Genetic Modifications of Bmpr2 and a Chemokine Receptor on Progressive Pulmonary Hypertension in Rats: What Does CRISPR/Cas9 Bring to Pulmonary Hypertension Research?2022

    • Author(s)
      Hirofumi Sawada
    • Organizer
      第86回日本循環器学会学術集会
    • Related Report
      2022 Research-status Report
    • Invited

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Published: 2022-04-19   Modified: 2026-01-16  

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