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Mechanisms underlying gliogenesis of astrocytes in premature brain

Research Project

Project/Area Number 17H04232
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Pediatrics
Research InstitutionKeio University

Principal Investigator

Takahashi Takao  慶應義塾大学, 医学部(信濃町), 教授 (80171495)

Co-Investigator(Kenkyū-buntansha) 三橋 隆行  慶應義塾大学, 医学部(信濃町), 講師 (80338110)
芝田 晋介  慶應義塾大学, 医学部(信濃町), 講師 (70407089)
武内 俊樹  慶應義塾大学, 医学部(信濃町), 講師 (60383741)
Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥16,380,000 (Direct Cost: ¥12,600,000、Indirect Cost: ¥3,780,000)
Fiscal Year 2019: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2018: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2017: ¥5,720,000 (Direct Cost: ¥4,400,000、Indirect Cost: ¥1,320,000)
Keywords神経発生 / 大脳皮質 / 細胞周期 / アストロサイト / 小児神経
Outline of Final Research Achievements

Recent reports have shown that the astrocyte have multiple roles in maintaining structure of neocortices and behavioral brain functions in mammals. The goal of this analysis was to investigate the role of astrocyte in neocortical histogenesis. We show here that in utero exposure of histone deacetylase inhibitor valproate (VPA) increased the number of astrocyte in neocortices in young adult mice. In addition, specific genes that were critical for ADP biosynthetic process were increased in the neocortical astrocytes by VPA exposure in utero.

Academic Significance and Societal Importance of the Research Achievements

本研究の結果は、VPA胎内曝露が生後早期の大脳皮質に分布する星状グリアの遺伝子発現を変動させるとともに星状グリア数を増加させることを示した。遺伝子発現解析とGO解析の結果から、VPAに胎内曝露されたマウスの星状グリアではATPase量が増加すると推測された。ATPaseはATPを加水分解しエネルギー産生を行う酵素であるため、VPA胎内曝露群の星状グリアでは生体活動によるエネルギー需要が増加していると考えられた。VPA胎内曝露が仔の高次脳機能を障害することは多数の先行研究が報告しており、本研究結果は星状グリアの数の増加や生体活動の変動が高次脳機能障害の一因となり得る可能性を示唆した。

Report

(4 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • Research Products

    (2 results)

All 2019 2017

All Journal Article (2 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 2 results,  Open Access: 1 results)

  • [Journal Article] Large-Area Fluorescence and Electron Microscopic Correlative Imaging With Multibeam Scanning Electron Microscopy.2019

    • Author(s)
      Shibata S, Iseda T, Mitsuhashi T, Oka A, Shindo T, Moritoki N, Nagai T, Otsubo S, Inoue T, Sasaki E, Akazawa C, Takahashi T, Schalek R, Lichtman JW and Okano H.
    • Journal Title

      Front. Neural Circuits

      Volume: 13 Pages: 1-18

    • DOI

      10.3389/fncir.2019.00029

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Adverse effects of prenatal and early postnatal exposure to antiepileptic drugs: Validation from clinical and basic researches.2017

    • Author(s)
      Fujimura K, Mitsuhashi T, Takahashi T.
    • Journal Title

      Brain & Development

      Volume: 39 Issue: 8 Pages: 635-643

    • DOI

      10.1016/j.braindev.2017.03.026

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed

URL: 

Published: 2017-04-28   Modified: 2021-02-19  

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