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Na+ image analysis of neuron-glia interactions in cutaneous sensory devices

Research Project

Project/Area Number 17K08504
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General anatomy (including histology/embryology)
Research InstitutionHokkaido University

Principal Investigator

Takahashi-Iwanaga Hiromi  北海道大学, 医学研究院, 准教授 (30193759)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords細胞組織化学 / カルシウム画像 / ナトリウム画像 / グルタミン酸 / アデノシン5’三燐酸 / 槍型感覚終末 / Naイオン感受性蛍光プローブ / ATP / 細胞外シグナルキナーゼ / 一次線毛 / ラット / プリン作動性信号
Outline of Final Research Achievements

The lanceolate sensory endings that innervate rat vibrissal follicles accompany two glial cell types: the myelinating Schwann cells that enshroud the afferent fibers, and the terminal Schwan cells that form lamellar coverings on the unmyelinated axon endings. In order to examine responses of the mechanoreceptor glia to the neurotransmitter, glutamate, which is reportedly released from the primary sensory neurons, isolated preparations of lanceolate endings were loaded with the fluorescent probe, Fura-2 or SBFI, and subjected to image analysis of intracellular Ca2+ or Na+ dynamics during a bath application of the stimulant. The myelinating Schwann cells occasionally responded to application of 1 mM glutamate with a Ca2+ transient, and displayed a mild elevation in intracellular Na+ concentration during a corresponding stimulation. No responses were detectable from the terminal Schwann cells.

Academic Significance and Societal Importance of the Research Achievements

中枢・末梢神経系正常機能の発現と維持に欠かせないニューロンーグリア相互作用の解析に,細胞内Na+濃度画像化法が有効であることを初めて皮膚感覚装置の分離標本の実験で示し,さらに精細なデータを得るために解決すべき問題点を具体的に示した。これによって,皮膚感覚装置の機能形態とその病的変化の理解に新しい視点を提供し得る研究技法の開発に貢献できた。また,Na+画像取得条件錬成のため行ったCa2+画像解析によって,皮膚感覚装置の異なる種類のグリア細胞が,神経終末から放出されるという伝達物質ATPに対し,それぞれ独自の受容体亜型を介し応答していることを明らかにし,新しい末梢神経系創薬の鍵を提供できた。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (9 results)

All 2021 2020 2019 2018

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (5 results)

  • [Journal Article] Osteoprotegerin-dependent Mcell self-regulation balances gut infection and immunity.2020

    • Author(s)
      Kimura S, Nakamura Y, Kobayashi N, Shiroguchi K, KawakamiE, Mutoh M, Takahashi-Iwanaga H, Yamada T, Hisamoto M, Nakamura M, Udagawa N, Sato S, KaishoT, Iwanaga T, Hase K.
    • Journal Title

      Nat Commun

      Volume: 11 Issue: 1 Pages: 234-234

    • DOI

      10.1038/s41467-019-13883-y

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Bush-like integrin filament networks associated with hyaloid vasculature in murine neonate eyes2019

    • Author(s)
      Iwanaga T, Nio-Kobayashi J, Takahashi-Iwanaga H.
    • Journal Title

      Biomedical Research

      Volume: 40 Issue: 2 Pages: 79-85

    • DOI

      10.2220/biomedres.40.79

    • NAID

      130007632094

    • ISSN
      0388-6107, 1880-313X
    • Year and Date
      2019-04-01
    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Cell- and stage-specific localization of galectin-3, a β-galactoside-binding lectin, in a mouse model of experimental autoimmune encephalomyelitis2018

    • Author(s)
      Itabashi Tetsuya、Arima Yasunobu、Kamimura Daisuke、Higuchi Kotaro、Bando Yoshio、Takahashi-Iwanaga Hiromi、Murakami Masaaki、Watanabe Masahiko、Iwanaga Toshihiko、Nio-Kobayashi Junko
    • Journal Title

      Neurochemistry International

      Volume: 118 Pages: 176-184

    • DOI

      10.1016/j.neuint.2018.06.007

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Histochemical characteristics of regressing vessels in the hyaloid vascular system of neonatal mice: novel implication for vascular atrophy2018

    • Author(s)
      Kishimoto A, Kimura S, Nio-Kobayashi J, Takahashi-Iwanaga H, Park AM, Iwanaga T
    • Journal Title

      Exp Eye Res

      Volume: 未定 Pages: 1-9

    • DOI

      10.1016/j.exer.2018.03.024

    • Related Report
      2018 Research-status Report 2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] ラット頬ひげ槍型感覚終末に随伴する星形シュワン様細胞の細胞外シグナル制御キナーゼ1/2 (ERK) はプリン受容体P2Y2を介し活性化される2021

    • Author(s)
      岩永ひろみ
    • Organizer
      第126回 日本解剖学会全国学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] ラット洞毛槍型感覚終末星形シュワン様細胞でのプリン作動性信号を介した細胞外シグナル調節キナーゼ(ERK)活性化とその機構2020

    • Author(s)
      岩永ひろみ
    • Organizer
      第125回日本解剖学会全国学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] ラット槍型感覚終末星形シュワン様細胞でのプリン作動性信号を介した細胞外シグナル調節キナーゼ(ERK)の活性化2019

    • Author(s)
      岩永ひろみ
    • Organizer
      日本解剖学会第65回東北・北海道連合支部学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] ラット頬ひげ動き受容器周辺の星形シュワン様細胞におけるCa信号の生成と伝播―高速2光子励起顕微鏡による解析―2019

    • Author(s)
      岩永ひろみ,堤元佐,大友康平,岩永敏彦,根本知己
    • Organizer
      第124回 日本解剖学会全国学術集会
    • Related Report
      2018 Research-status Report
  • [Presentation] ラット頬ひげ動き受容器周辺のグリア細胞種間にみられる機能的ATP受容体亜型の棲み分け2018

    • Author(s)
      岩永ひろみ,岩永敏彦
    • Organizer
      第123回日本解剖学会全国学術集会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-12-28  

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