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Evaluation of the regulation mechanism of NG2 glia and remyelination under impaired conditions of the central nervous system

Research Project

Project/Area Number 21K06443
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 46030:Function of nervous system-related
Research InstitutionKeio University

Principal Investigator

Unekawa Miyuki  慶應義塾大学, 医学部(信濃町), 研究員 (10548481)

Co-Investigator(Kenkyū-buntansha) 冨田 裕  慶應義塾大学, 医学部(信濃町), 講師(非常勤) (60276251)
伊澤 良兼  慶應義塾大学, 医学部(信濃町), 講師 (90468471)
滝沢 翼  慶應義塾大学, 医学部(信濃町), 講師 (30778874)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2023: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords脳微小循環 / Neurovascular unit / 脳虚血 / オリゴデンドロサイト / NG2グリア / オリゴデンドロサイト前駆細胞 / 髄鞘 / 脱髄
Outline of Research at the Start

NVUを形成するグリア細胞の一つでオリゴデンドロサイトや周皮細胞、アストロサイトに分化するNG2グリアが脱髄疾患、脳虚血などの病態下での変化を検討し、その機序を検証する。OPCおよびオリゴデンドロサイトに特異的に蛍光タンパク質を発現させたマウスを用いた疾患モデルに慢性頭窓を作成し、二光子顕微鏡を用いて長期間観察を行うことにより、細胞レベルでの変化を経日的に観察する。さらに脳の高次機能を維持する上で重要な神経軸索髄鞘の維持・再生をもたらす処置や薬剤を探索する。さらに脱髄を主症状とする多発性硬化症や認知症など多くの中枢神経疾患モデルにも応用し、NG2グリアの機能・役割を解明する。

Outline of Final Research Achievements

We focused on NG2 glia to investigate morphological changes during cerebral ischemia and to investigate the mechanism of improvement of the pathological condition. We established a technique to track longitudinal morphological changes of various cells through a chronic cranial window by Tomita-Seylaz method using the genetically engineered mice expressing fluorescent protein in Sox10, highly coexpressing with NG2, and revealing in oligodendrocytes and their progenitor cells. We tracked morphological changes in various cells by repeated observation using two-photon microscopy for a long duration. Further, we established the middle cerebral artery occlusion technique and found that the occurrence of cortical spreading depolarization is involved in the formation of infarct foci after transient occlusion of cortical branches, and that tissue damage associated with reduced striatal blood flow due to transient occlusion at the origin is involved in the development of neurological deficits.

Academic Significance and Societal Importance of the Research Achievements

NG2と高い共発現が確認されているSox10-Venusマウスでは、オリゴデンドロサイトとその前駆細胞を描出し、スルホローダミン101により染色されるアストロサイトと区別しながら検出することができる。Tomita-Seylaz法による慢性頭窓において血管を指標として同一部位を繰り返し撮像し、同一細胞を追跡することによって分化・成熟していく様子を追跡する本研究手法を用いると、非観察時は麻痺や行動異常などを観察することができ、組織学的状態との相関を検討することが可能である。長期的変化を追跡することによって慢性期における脳疾患の状態を観察し、後遺症の軽減につながる可能性を有している。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (27 results)

All 2024 2023 2022 2021

All Journal Article (10 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 10 results,  Open Access: 8 results) Presentation (17 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] Striatal blood flow changes by middle cerebral artery occlusion and its effect on neurological deficits in mice.2024

    • Author(s)
      Unekawa M., Tsukada N., Takizawa T., Tomita Y., Nakahara J., Izawa Y.
    • Journal Title

      Microcirculation

      Volume: - Issue: 6

    • DOI

      10.1111/micc.12861

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Acceleration of the Development of Microcirculation Embolism in the Brain due to Capillary Narrowing2023

    • Author(s)
      Murata Juri、Unekawa Miyuki、Kudo Yuya、Kotani Maho、Kanno Iwao、Izawa Yoshikane、Tomita Yutaka、Tanaka Kenji F.、Nakahara Jin、Masamoto Kazuto
    • Journal Title

      Stroke

      Volume: 54 Issue: 8 Pages: 2135-2144

    • DOI

      10.1161/strokeaha.122.042416

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Close association between spreading depolarization and development of infarction under experimental ischemia in anesthetized male mice.2022

    • Author(s)
      Unekawa M, Tomita Y, Masamoto K, Kanno I, Nakahara J, Izawa Y
    • Journal Title

      Brain Res

      Volume: 1792 Pages: 148023-148023

    • DOI

      10.1016/j.brainres.2022.148023

    • Related Report
      2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Effect of Goreisan, a Japanese Traditional Medicine, on Cortical Spreading Depolarization in Mice.2022

    • Author(s)
      Iba C, Unekawa M, Izawa Y, Nakahara J, Takizawa T
    • Journal Title

      Int J Mol Sci

      Volume: 23 Issue: 22 Pages: 13803-13803

    • DOI

      10.3390/ijms232213803

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sustained Effects of CGRP Blockade on Cortical Spreading Depolarization-Induced Alterations in Facial Heat Pain Threshold, Light Aversiveness, and Locomotive Activity in the Light Environment.2022

    • Author(s)
      Kitagawa S, Tang C, Unekawa M, Kayama Y, Nakahara J, Shibata M
    • Journal Title

      Int J Mol Sci

      Volume: 23 Issue: 22 Pages: 13807-13807

    • DOI

      10.3390/ijms232213807

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Separate optogenetic manipulation of Nerve/glial antigen 2 (NG2) glia and mural cells using the NG2 promoter.2022

    • Author(s)
      Oishi M, Stefan P, Yamazaki Y, Unekawa M, Adachi R, Yamada M, Imayoshi I, Abe Y, Steinhauser C, Tanaka KF
    • Journal Title

      Glia

      Volume: 71 Issue: 2 Pages: 317-333

    • DOI

      10.1002/glia.24273

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Protracted hypomobility in the absence of trigeminal sensitization after cortical spreading depolarization: Relevance to migraine postdrome2021

    • Author(s)
      Shibata Mamoru、Kitagawa Satoshi、Tang Chunghua、Unekawa Miyuki、Kayama Yohei、Shimizu Toshihiko、Nakahara Jin、Suzuki Norihiro
    • Journal Title

      Neuroscience Research

      Volume: 172 Pages: 80-86

    • DOI

      10.1016/j.neures.2021.03.010

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Time Series Tracking of Cerebral Microvascular Adaptation to Hypoxia and Hyperoxia Imaged with Repeated In Vivo Two-Photon Microscopy.2021

    • Author(s)
      Sugashi T., Niizawa T., Suzuki H., Takuwa H., Unekawa M., Tomita Y., Kanno I., Masamoto K.
    • Journal Title

      Adv. Exp. Med. Biol.

      Volume: 1269 Pages: 323-327

    • DOI

      10.1007/978-3-030-48238-1_51

    • ISBN
      9783030482367, 9783030482381
    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Differential pial and penetrating arterial responses examined by optogenetic activation of astrocytes and neurons2021

    • Author(s)
      Hatakeyama N., Unekawa M., Tomita Y. Suzuki N. Nakahara J. Takuwa H., Kanno I., Matsui K., Tanaka K.F., Masamoto K.
    • Journal Title

      J Cereb Blood Flo Metab

      Volume: - Issue: 10 Pages: 2676-2689

    • DOI

      10.1177/0271678x211010355

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Optical manipulation of local cerebral blood flow in the deep brain of freely moving mice2021

    • Author(s)
      Abe Yoshifumi、Kwon Soojin、Oishi Mitsuhiro、Unekawa Miyuki、Takata Norio、Seki Fumiko、Koyama Ryuta、Abe Manabu、Sakimura Kenji、Masamoto Kazuto、Tomita Yutaka、Okano Hideyuki、Mushiake Hajime、Tanaka Kenji F.
    • Journal Title

      Cell Reports

      Volume: 36 Issue: 4 Pages: 109427-109427

    • DOI

      10.1016/j.celrep.2021.109427

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Hemodynamics and infarct formation at the striatum and cerebral cortex in stroke model mice.2023

    • Author(s)
      Unekawa M., Tsukada N., Takizawa T., Tomita Y., Nakahara J., Izawa Y.
    • Organizer
      31st International Symposium on Cerebral Blood Flow and Metabolism
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Quantitative characterization of the microglial response to chronic hypoxia in the mouse cortex.2023

    • Author(s)
      Kudo Y., Sugashi T., Yuki H., Soga N., Unekawa M., Tomita Y., Izawa Y., Nakahara J., Kanno I., Masamoto K.
    • Organizer
      31st International Symposium on Cerebral Blood Flow and Metabolism
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ミクログリアの個性を示す画像化手法の提案:生体二光子顕微鏡による検討2023

    • Author(s)
      工藤雄也, 須貸琢磨, 結城浩弥, 曽我直人, 畝川美悠紀, 冨田裕, 伊澤良兼, 中原仁, 菅野巖, 正本和人
    • Organizer
      第66回日本脳循環代謝学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Hemodynamics and infarct formation at the striatum and cerebral cortex by transient occlusion of middle cerebral artery in mice2023

    • Author(s)
      Unekawa M, Takizawa T, Tomita Y, Nakahara J, Izawa Y
    • Organizer
      第48回日本微小循環学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] 塞栓糸を用いた中大脳動脈一過性閉塞術による大脳皮質および線条体の血流変化と虚血・梗塞巣の形成2023

    • Author(s)
      畝川美悠紀, 塚田直己, 滝沢翼, 冨田裕, 中原仁, 伊澤良兼
    • Organizer
      第48回日本脳卒中会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] Development of the pericytes-specific optogenic tool.2023

    • Author(s)
      Iba C, Abe Y, Unekawa M, Tomita Y, Tanaka KF
    • Organizer
      US-Japan Joint Workshop on the Neurovascular Unit 2023
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Establishment of pericytes-specific optogenetic animal.2023

    • Author(s)
      Iba C, Unekawa M, Tanaka KF
    • Organizer
      第48回日本微小循環学会総会
    • Related Report
      2022 Research-status Report
  • [Presentation] Capillary constriction enhances microcirculation embolism in the mouse cortex.2023

    • Author(s)
      Kudo Y, Murata J, Unekawa M, Kanno I, Izawa Y, Tomita Y, Tanaka KF, Nakahara J, Masamoto K
    • Organizer
      US-Japan Joint Workshop on the Neurovascular Unit 2023
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 塞栓糸を用いた中大脳動脈一過性閉塞術による大脳皮質および線条体の血流動態と梗塞形成2022

    • Author(s)
      畝川美悠紀, 塚田直己, 滝沢翼, 冨田裕, 中原仁, 伊澤良兼
    • Organizer
      第65回日本脳循環代謝学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] Effects of goreisan, an herbal medicine, on cortical spreading depolarization.2022

    • Author(s)
      Iba C, Unekawa M, Izawa Y, Nakahara J, Takizawa T
    • Organizer
      64th Annual Scientific Meeting of the American Headache Society
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] Increased miroembolism caused by capillary constriction in the brain.2022

    • Author(s)
      Kotani M, Murata J, Unekawa M, Kanno I, Tomita Y, Tanaka KF, Nakahara J, Masamoto K
    • Organizer
      9th World Congress of Biomechanics
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 脳微小血管の収縮による微小塞栓の形成2022

    • Author(s)
      工藤雄也, 村田樹里, 小谷真穂, 畝川美悠紀, 伊澤良兼, 菅野巖, 冨田裕, 田中謙二, 中原仁, 正本和人
    • Organizer
      第65回日本脳循環代謝学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] マウス大脳皮質におけるミクログリアの長期観察と低酸素暴露への適応2021

    • Author(s)
      須貸拓馬, 結城浩弥, 畝川美悠紀, 冨田裕, 菅野巖, 中原仁, 正本和人
    • Organizer
      第25回酸素ダイナミクス研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] オプトジェネティクスを用いた脳微小血管の操作2021

    • Author(s)
      小谷真穂, 村田樹里, 大石光洋, 畠山菜緒, 畝川美悠紀, 伊澤良兼, 菅野巖, 冨田裕, 田中謙二, 中原仁, 正本和人
    • Organizer
      第25回酸素ダイナミクス研究会
    • Related Report
      2021 Research-status Report
  • [Presentation] Vasoconstriction and hypoperfusion induced by photoactivation of the ChR2-expressing vascular cells.2021

    • Author(s)
      冨田裕, 村田樹里, 畠山菜緒, 畝川美悠紀, 伊澤良兼, 菅野巌, 田中謙二, 正本和人, 中原仁
    • Organizer
      第62回日本神経学会学術大会
    • Related Report
      2021 Research-status Report
  • [Presentation] タバコと片頭痛の関係についての臨床および基礎的検討2021

    • Author(s)
      滝沢翼, 畝川美悠紀, 渡邊成美, 加川志津子, 伊庭知里, 中山真吾, 中鉢正太郎, 宮崎直己, 竹村亮, 石井亮太, 柴田護, 福永興壱, 中原仁
    • Organizer
      第39回日本神経治療学会学術集会
    • Related Report
      2021 Research-status Report
  • [Presentation] 喫煙が皮質拡延性脱分極に及ぼす影響について2021

    • Author(s)
      滝沢翼, 畝川美悠紀, 伊庭知里, 加川志津子, 渡邊成美, 中山真吾, 桜井香, 宮崎直己, 石田典之, 竹村亮, 柴田護, 伊澤良兼, 中鉢正太郎, 福永興壱, 中原仁
    • Organizer
      第64回日本脳循環代謝学会学術集会
    • Related Report
      2021 Research-status Report

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Published: 2021-04-28   Modified: 2025-01-30  

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