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Ferroptosis of pericyte during brain ischemia

Research Project

Project/Area Number 20K09373
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 56010:Neurosurgery-related
Research InstitutionKyushu University

Principal Investigator

Ago Tetsuro  九州大学, 医学研究院, 准教授 (30514202)

Co-Investigator(Kenkyū-buntansha) 中村 晋之  九州大学, 大学病院, 助教 (80713742)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords脳梗塞 / 虚血再灌流 / ペリサイト / フェロトーシス / 組織修復 / 神経機能回復 / 鉄 / 虚血再灌流障害 / 脳保護
Outline of Research at the Start

脳梗塞は日本人における代表的な国民病の一つである.発症予防とともに,発症後の機能回復をいかに誘導できるかが重要である.脳梗塞発生時,虚血領域における血流を維持し,いかに組織修復を促進させることができるかが,機能回復の視点からも重要であることが明らかとなってきた.脳における血流維持・組織修復には,細小血管壁に豊富に存在するペリサイトが重要な役割を果たすことから,ペリサイト死・機能障害をいかに抑制するかが重要となる.細胞死の形態には様々なものがあることが近年明らかとなってきたが,このうちフェロトーシスと呼ばれる細胞死が脳虚血時ペリサイトに生じている可能性があり,本研究課題ではこれを検証する.

Outline of Final Research Achievements

Iron is an essential element requiring various biological responses and causing oxidative stress. Under conditions that oxygen concentrations are rapidly changed, such as ischemia-reperfusion, disturbed intracellular metabolism of iron can cause ferroptosis, an iron-dependent cell death, in some cell types. Reperfusion therapy is established in acute ischemic stroke in human. Nevertheless, no-reflow phenomenon or worsening of damages can occasionally be found even following successful reperfusion. In this study, we have demonstrated that microvascular pericytes, rather than neuronal cells, are more susceptible for ferroptosis in acute ischemic stroke accompanied by reperfusion and that inhibition of pericyte ferroptosis can be a therapeutic target in terms of post-stroke functional recovery.

Academic Significance and Societal Importance of the Research Achievements

脳梗塞は日本人の代表的国民病である.超急性期における血栓溶解薬投与やカテーテル治療による再灌流療法が確立したが,その恩恵を受ける患者は10%に満たない.他方,リハビリテーション治療を除き神経機能回復を促進する治療は未だ存在しない.脳梗塞直後の神経保護療法は再灌流療法抜きに無効であることが証明されたが,治療開始に時間的余裕のある機能回復促進療法は,種々の臨床疫学研究,基礎研究の成果からも有望であると考えられる.疾病重症度やその頻度を考えると機能回復促進療法の開発は急務である.脳梗塞後に生じる内因性機能回復機構を明らかにするとともに,その標的細胞を明確にした点で本成果は意義あるものと考えている.

Report

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

    (19 results)

All 2023 2022 2021 2020 Other

All Journal Article (9 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 5 results,  Open Access: 2 results) Presentation (8 results) (of which Int'l Joint Research: 1 results,  Invited: 7 results) Book (1 results) Remarks (1 results)

  • [Journal Article] PDGFRβ-positive cell-mediated post-stroke remodeling of fibronectin and laminin α2 for tissue repair and functional recovery2022

    • Author(s)
      Shibahara Tomoya、Nakamura Kuniyuki、Wakisaka Yoshinobu、Shijo Masahiro、Yamanaka Kei、Takashima Masamitsu、Takaki Hayato、Hidaka Masaoki、Kitazono Takanari、Ago Tetsuro
    • Journal Title

      Journal of Cerebral Blood Flow & Metabolism

      Volume: 43 Issue: 4 Pages: 518-530

    • DOI

      10.1177/0271678x221145092

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Deletion of Nox4 enhances remyelination following cuprizone‐induced demyelination by increasing phagocytic capacity of microglia and macrophages in mice2022

    • Author(s)
      Yamanaka Kei、Nakamura Kuniyuki、Shibahara Tomoya、Takashima Masamitsu、Takaki Hayato、Hidaka Masaoki、Komori Motohiro、Yoshikawa Yoji、Wakisaka Yoshinobu、Ago Tetsuro、Kitazono Takanari
    • Journal Title

      Glia

      Volume: 71 Issue: 3 Pages: 541-559

    • DOI

      10.1002/glia.24292

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Low-dose sodium-glucose cotransporter 2 inhibitor ameliorates ischemic brain injury in mice through pericyte protection without glucose-lowering effects2022

    • Author(s)
      Takashima Masamitsu、Nakamura Kuniyuki、Kiyohara Takuya、Wakisaka Yoshinobu、Hidaka Masaoki、Takaki Hayato、Yamanaka Kei、Shibahara Tomoya、Wakisaka Masanori、Ago Tetsuro、Kitazono Takanari
    • Journal Title

      Communications Biology

      Volume: 5 Issue: 1 Pages: 653-653

    • DOI

      10.1038/s42003-022-03605-4

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 単なる壁細胞ではない 脳機能遂行の鍵を握るペリサイト2022

    • Author(s)
      日高壮意,吾郷哲朗
    • Journal Title

      Clinical Neuroscience

      Volume: 40 Pages: 1522-1525

    • Related Report
      2022 Annual Research Report
  • [Journal Article] 脳微小循環とNeurovascular Unit2022

    • Author(s)
      吾郷哲朗
    • Journal Title

      日本臨牀

      Volume: 80(増刊号1) Pages: 118-124

    • Related Report
      2021 Research-status Report
  • [Journal Article] 脳虚血病態におけるペリサイト機能の重要性2022

    • Author(s)
      吾郷哲朗
    • Journal Title

      日本臨牀

      Volume: 80(増刊号2) Pages: 644-649

    • Related Report
      2021 Research-status Report
  • [Journal Article] Neurovascular unit - 脳梗塞発症から機能回復まで2022

    • Author(s)
      吾郷哲朗
    • Journal Title

      医学のあゆみ

      Volume: 280 Pages: 1020-1027

    • Related Report
      2021 Research-status Report
  • [Journal Article] β-Cell Function and Clinical Outcome in Nondiabetic Patients With Acute Ischemic Stroke2021

    • Author(s)
      Kiyohara Takuya et al.
    • Journal Title

      Stroke

      Volume: 52 Issue: 8 Pages: 2621-2628

    • DOI

      10.1161/strokeaha.120.031392

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Reciprocal Interaction Between Pericytes and Macrophage in Poststroke Tissue Repair and Functional Recovery2020

    • Author(s)
      Shibahara Tomoya、Ago Tetsuro、Tachibana Masaki、Nakamura Kuniyuki、Yamanaka Kei、Kuroda Junya、Wakisaka Yoshinobu、Kitazono Takanari
    • Journal Title

      Stroke

      Volume: 51 Issue: 10 Pages: 3095-3106

    • DOI

      10.1161/strokeaha.120.029827

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Presentation] 「どうすれば脳梗塞後機能回復を向上させることができるか?」2023

    • Author(s)
      吾郷哲朗, 中村晋之, 清原卓也, 脇坂義信, 北園孝成
    • Organizer
      第48回日本脳卒中学会学術総会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] Roles of Pericyte in brain health and cerebrovascular diseases2023

    • Author(s)
      Ago Tetsuro
    • Organizer
      第100回日本生理学会大会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 「脳虚血におけるペリサイトの役割」2022

    • Author(s)
      吾郷哲朗
    • Organizer
      第65回日本脳循環代謝学術学会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 脳虚血再灌流病態におけるペリサイトのFerroptosisに関する検討2022

    • Author(s)
      髙木勇人, 吾郷哲朗, 吉野文隆, 日高壮意, 清原卓也, 中村晋之, 脇坂義信, 北園孝成
    • Organizer
      第65回日本脳循環代謝学術学会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Polyvascular Atherosclerotic Disease-脳梗塞におけるトピックス-2022

    • Author(s)
      吾郷哲朗
    • Organizer
      第54回日本動脈硬化学会総会学術集会
    • Related Report
      2022 Annual Research Report
    • Invited
  • [Presentation] 脳虚血病態における細胞間連関と臓器連関- 新たな治療標的は何か?-2021

    • Author(s)
      吾郷哲朗
    • Organizer
      第74回日本自律神経学会総会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] 脳血管障害ハイリスク患者再発予防のキモ.2021

    • Author(s)
      吾郷哲朗
    • Organizer
      第43回日本高血圧学会総会
    • Related Report
      2021 Research-status Report
    • Invited
  • [Presentation] Reciprocal Interaction Between Pericytes and Macrophage in Poststroke Tissue Repair and Functional Recovery2021

    • Author(s)
      Ago Tetsuro
    • Organizer
      International Stroke Conference 2021
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] COVID-19神経ハンドブック 血管への感染と血液脳関門の破綻.2022

    • Author(s)
      日高壮意,吾郷哲朗
    • Total Pages
      9
    • Publisher
      中外医薬社
    • ISBN
      9784498328860
    • Related Report
      2022 Annual Research Report
  • [Remarks] 九州大学第二内科 脳循環代謝研究室

    • URL

      https://www.intmed2.med.kyushu-u.ac.jp/stroke/

    • Related Report
      2021 Research-status Report

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

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