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Immune regulation of brain regeneration in trimethyltin-treated mice

Research Project

Project/Area Number 18K14587
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 42020:Veterinary medical science-related
Research InstitutionYamaguchi University

Principal Investigator

SAKURAI Masashi  山口大学, 共同獣医学部, 助教 (00747967)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywords脳 / 再生 / リンパ球 / マウス / 神経新生 / 神経幹細胞 / 神経病理 / 免疫 / 組織再生 / マウスモデル / Trimethyltin / 神経再生
Outline of Final Research Achievements

Trimethyltin (TMT) -treated mice is a useful animal model for the investigation of brain tissue regeneration. In this study, we focused on T lymphocytes which migrate into the brain lesions of TMT-treated mice. At first, prednisolone (PSL), a common immunosuppressant, was administered to TMT-treated mice. Immunohistochemical analysis revealed that PSL treatment could inhibit the T lymphocyte migration and improve brain tissue regeneration. Then, we made TMT-treated mice using nude mouse which lacks mature T lymphocytes. TMT-treated nude mice also showed improved brain tissue regeneration compared with TMT-treated mice having normal immune system. These results indicated that T lymphcytes prevent the brain tissue regeneration in TMT-treated mice.

Academic Significance and Societal Importance of the Research Achievements

脳は再生しない臓器と考えられてきた。しかし、近年の研究により脳にも少数の神経幹細胞が分布しており、脳梗塞などの病変内に新しい神経細胞が産生されることが報告されている。すなわち、脳にも弱いながら他の臓器のように再生力が存在する可能性がある。本研究では、白血球の一種であるTリンパ球が脳の再生を阻害することが示された。本研究の成果は白血球に代表される免疫系が脳の再生を制御する可能性を示したことにその意義があり、脳再生医療分野に貢献する一知見を得たものである。

Report

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

    (8 results)

All 2021 2020 2019 2018

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Open Access: 3 results) Presentation (2 results)

  • [Journal Article] Histopathological Characterization of Cases of Spontaneous Fatal Feline Severe Fever with Thrombocytopenia Syndrome, Japan.2021

    • Author(s)
      Yusuke Sakai, Yuko Kuwabara, Keita Ishijima, Saya Kagimoto, Serina Mura, Kango Tatemoto, Ryusei Kuwata, Kenzo Yonemitsu, Shohei Minami, Yudai Kuroda, Kenji Baba, Masaru Okuda, Hiroshi Shimoda, Masashi Sakurai, Masahiro Morimoto, Ken Maeda
    • Journal Title

      Emerging infectious diseases

      Volume: 27 Issue: 4 Pages: 1068-1076

    • DOI

      10.3201/eid2704.204148

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Minocycline prevents depression-like behavior in streptozotocin-induced diabetic mice2020

    • Author(s)
      Masashi Sakurai, Ryoi Iwasa, Yusuke Sakai, Masahiro Morimoto
    • Journal Title

      Neuropathology

      Volume: 41 Issue: 2 Pages: 109-117

    • DOI

      10.1111/neup.12706

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Nippostrongylus brasiliensis infection inhibits hippocampal neurogenesis in mice2019

    • Author(s)
      Sakurai Masashi、Kurachi Junya、Sakai Yusuke、Morimoto Masahiro
    • Journal Title

      Neuropathology

      Volume: 39 Issue: 6 Pages: 425-433

    • DOI

      10.1111/neup.12596

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Mycobacterial infection induces eosinophilia and production of α-defensin by eosinophils in mice2019

    • Author(s)
      KHATUN Afia、SAKURAI Masashi、SAKAI Yusuke、TACHIBANA Masato、OHARA Naoya、MORIMOTO Masahiro
    • Journal Title

      Journal of Veterinary Medical Science

      Volume: 81 Issue: 1 Pages: 138-142

    • DOI

      10.1292/jvms.18-0619

    • NAID

      130007556888

    • ISSN
      0916-7250, 1347-7439
    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] Expression of Stem Cell Factor in Feline Mast Cell Tumour.2018

    • Author(s)
      Sakurai M, Iwasa R, Sakai Y, Chambers JK, Uchida K, Morimoto M.
    • Journal Title

      J Comp Pathol

      Volume: 163 Pages: 6-9

    • DOI

      10.1016/j.jcpa.2018.06.005

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhanced neurogenesis and possible synaptic reorganization in the piriform cortex of adult rat following kainic acid-induced status epilepticus2018

    • Author(s)
      Sakurai M., Suzuki H., Tomita N., Sunden Y., Shimada A., Miyata H., Morita T.
    • Journal Title

      Neuropathology

      Volume: 38 Issue: 2 Pages: 135-143

    • DOI

      10.1111/neup.12445

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Trimethyltin投与マウスにおけるTリンパ球による脳組織再生の阻害2020

    • Author(s)
      青木 菜緒、櫻井 優、坂井 祐介、森本 将弘
    • Organizer
      第163回日本獣医学会学術集会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Trimethyltin投与歯状回再生モデルにおけるリンパ球の遊走2019

    • Author(s)
      櫻井 優
    • Organizer
      第60回日本神経病理学会総会学術研究会
    • Related Report
      2019 Research-status Report

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Published: 2018-04-23   Modified: 2022-01-27  

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