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A study on ASD-related model animals

Research Project

Project/Area Number 20K07362
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 49010:Pathological biochemistry-related
Research InstitutionGunma University (2021-2022)
Tokyo Women's Medical University (2020)

Principal Investigator

Miyoshi Goichi  群馬大学, 大学院医学系研究科, 教授 (20519326)

Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords自閉スペクトラム症 / 抑制回路発達 / 神経発達障害 / 生後発達 / 抑制ニューロン / 皮質発達 / 脳波 / 興奮抑制バランス / FOXG1 / 自閉症スペクトラム / 前頭前皮質 / 社会性行動 / 中間表現型
Outline of Research at the Start

神経発達障害である自閉症スペクトラムは遺伝と環境リスク両要因の複雑な相互作用により起こると考えられており、発症機構はほとんど明らかにされていない。本研究では、これまでに確立した3種類の自閉症モデルマウス群に共通してみられる発症の臨界期に着目し、自閉症様社会性行動異常が産み出される脳内発達メカニズムの解明を目指す。自閉症中間表現型の回路・分子レベルでの構成的理解を通じた治療方法の提案に挑戦する。

Outline of Final Research Achievements

We found that increased or decreased FoxG1 expression in both excitatory and inhibitory neurons results in ASD-related circuit and social behavior deficits in our mouse models. The second postnatal week is the critical period when regulation of FoxG1 expression is required to prevent subsequent ASD-like social impairments. Transplantation of GABAergic precursor cells prior to this critical period and reduction in GABAergic tone via Gad2 mutation ameliorates and exacerbates circuit functionality and social behavioral defects, respectively.

Academic Significance and Societal Importance of the Research Achievements

自閉症モデル動物において、発達期脳内回路にどのような変化が生じることが要因となり発症や治療が進むのかを解明することは、自閉スペクトラム症研究のブレイクスルーになると考えられる。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (1 results)

All 2020

All Presentation (1 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Presentation] FOXG1-dependent early juvenile critical period for autism-associated behavioral circuit2020

    • Author(s)
      Goichi Miyoshi
    • Organizer
      FOXG1 Science Symposium 2020
    • Related Report
      2020 Research-status Report
    • Int'l Joint Research / Invited

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

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