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Contribution of T cell function to the pathogenesis of intracranial aneurysms.

Research Project

Project/Area Number 16K10719
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Neurosurgery
Research InstitutionNational Cardiovascular Center Research Institute (2017-2018)
Kyoto University (2016)

Principal Investigator

AOKI TOMOHIRO  国立研究開発法人国立循環器病研究センター, 研究所, 室長 (40633144)

Research Collaborator Koseki Hirokazu  
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords脳動脈瘤 / クモ膜下出血 / T細胞 / 炎症 / 慢性炎症 / T細胞 / マクロファージ / 炎症反応
Outline of Final Research Achievements

Given the social importance of intracranial aneurysm as a major cause of a lethal subarachnoid hemorrhage, clarification of mechanisms underlying the pathogenesis is essential for social health. To examine whether T cell function is involved in aneurysm progression, intracranial aneurysm model of rats was used. CD3-positive T cells were present in human aneurysm walls, whose number was significantly larger compared with that in control arterial walls. However, deficiency in T cells in rats and pharmacological inhibition of T cell function by oral administration of Cyclosporine A both failed to affect intracranial aneurysm progression. Furthermore, number of T cells infiltrating in rupture-prone lesions was similar with that in aneurysm lesions which never rupture.
Thus, T cell function is dispensable for the pathogenesis of intracranial aneurysms.

Academic Significance and Societal Importance of the Research Achievements

本研究計画では、致死的疾患のくも膜下出血の原因疾患である脳動脈瘤を対象疾患とした。ここで、脳動脈瘤は人口の数%を占める高頻度の疾患である一方で、いまだ薬物治療が存在しない。そのために、脳動脈瘤の進展破裂を予防する薬物治療法開発が急務である。
脳動脈瘤は脳血管壁内の慢性炎症反応に制御される疾患であると理解されている。一方、病変部の炎症細胞の一定部分を占めるT細胞については病態への寄与につき不明であった。よって本検討では、病態に対するT細胞の寄与を検討した。その結果、脳動脈瘤病態へのT細胞機能の寄与が限定的であることを明らかとした。
本検討の結果、脳動脈瘤の創薬標的についての理解が深まった。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (14 results)

All 2019 2018 2017

All Journal Article (7 results) (of which Peer Reviewed: 4 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 5 results) Book (1 results)

  • [Journal Article] Intracranial Aneurysm as a Macrophage-mediated Inflammatory Disease2019

    • Author(s)
      Kampei Shimizu, Mika Kushamae, Tohru Mizutani, Tomohiro Aoki
    • Journal Title

      Neurologia medico-chirurgica

      Volume: 59 Issue: 4 Pages: 126-132

    • DOI

      10.2176/nmc.st.2018-0326

    • NAID

      130007632867

    • ISSN
      0470-8105, 1349-8029
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 総説 炎症を通し脳動脈瘤を理解する2018

    • Author(s)
      青木 友浩、小関 宏和、宮田 悠、安部倉 友、清水 寛平
    • Journal Title

      Neurological Surgery 脳神経外科

      Volume: 46 Issue: 4 Pages: 275-294

    • DOI

      10.11477/mf.1436203718

    • ISSN
      0301-2603, 1882-1251
    • Year and Date
      2018-04-10
    • Related Report
      2018 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 脳動脈瘤に対する新規薬物治療法・診断法開発の可能性と近未来展望2018

    • Author(s)
      青木友浩
    • Journal Title

      脳神経外科ジャーナル

      Volume: 27 Pages: 882-888

    • NAID

      130007550030

    • Related Report
      2018 Annual Research Report
  • [Journal Article] 脳血管の慢性炎症性疾患としての脳動脈瘤の理解と薬物治療法開発への展望2018

    • Author(s)
      青木友浩
    • Journal Title

      循環器病研究の進歩

      Volume: 19 Pages: 66-74

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Targeting macrophages to treat intracranial aneurysm.2017

    • Author(s)
      Aoki T., Yamamoto R., Narumiya S.
    • Journal Title

      Oncotarget

      Volume: 28 Issue: 62 Pages: 104704-104705

    • DOI

      10.18632/oncotarget.21368

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] T cell function is dispensable for intracranial aneurysm formation and progression.2017

    • Author(s)
      Miyata H., Koseki H., Takizawa K., Kasuya H., Nozaki K., Narumiya S., Aoki T.
    • Journal Title

      PLoS ONE

      Volume: 12 Issue: 4 Pages: e0175421-e0175421

    • DOI

      10.1371/journal.pone.0175421

    • NAID

      120006309300

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 脳動脈瘤治療のパラダイムシフト2017

    • Author(s)
      青木友浩
    • Journal Title

      The 35th Meeting of The Mt. Fuji Workshop on CVD.

      Volume: 35 Pages: 1-9

    • Related Report
      2017 Research-status Report
  • [Presentation] 脳動脈瘤に対する新規薬物治療法・診断法開発の可能性と近未来展望2018

    • Author(s)
      青木友浩
    • Organizer
      第38回日本脳神経外科コングレス総会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] IA rodent models2018

    • Author(s)
      Tomohiro Aoki
    • Organizer
      Towards standardization of studies onto human and animal intracranial aneurysm wall vulnerability.
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 脳動脈瘤の発生進展と慢性炎症2018

    • Author(s)
      青木友浩
    • Organizer
      第37回Mt. Fuji Workshop on CVD
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] マクロファージ依存的な脳血管の慢性炎症性疾患としての脳動脈瘤の理解2018

    • Author(s)
      青木友浩
    • Organizer
      第77回日本脳外科学会総会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 脳動脈瘤形成・増大におけるT細胞機能2017

    • Author(s)
      宮田悠、小関宏和、瀧澤克己、糟谷英俊、野崎和彦、青木友浩
    • Organizer
      第42回日本脳卒中学会学術集会
    • Place of Presentation
      大阪国際会議場(大阪、大阪市)
    • Year and Date
      2017-03-16
    • Related Report
      2016 Research-status Report
  • [Presentation] Rat Model of intracranial aneurysm.2017

    • Author(s)
      Tomohiro Aoki
    • Organizer
      Vasospasm Meeting 2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Book] プライム脳神経外科2017

    • Author(s)
      野崎和彦、青木友浩
    • Total Pages
      7
    • Publisher
      三輪書店
    • ISBN
      9784895905879
    • Related Report
      2017 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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