• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Analysis of the mechanism of discrimination learning mediated by the direct and indirect striatal pathways

Research Project

Project/Area Number 22K20687
Research Category

Grant-in-Aid for Research Activity Start-up

Allocation TypeMulti-year Fund
Review Section 0704:Neuroscience, brain sciences, and related fields
Research InstitutionFukushima Medical University

Principal Investigator

Nishizawa Kayo  福島県立医科大学, 医学部, 助教 (30644108)

Project Period (FY) 2022-08-31 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
Fiscal Year 2023: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords背側線条体 / 弁別学習 / 直接路 / 間接路 / 大脳基底核回路 / 線条体
Outline of Research at the Start

大脳基底核の中心的な神経核である線条体は、学習に重要な脳領域である。線条体からの出力経路として、黒質へ投射する線条体直接路と、淡蒼球へ投射する線条体間接路が存在する。これらは拮抗的に作用し、その適切なバランスによって学習が可能となる。そのバランスの破綻は、大脳基底核回路の機能障害に直結する為、認知障害を伴う疾患発症に繋がる。しかし、技術的な問題により、上記経路が果たす学習への役割については十分な知見がない。本申請研究では、遺伝子操作技術を用いる事でそれぞれの経路を区別し、狙った経路特異的な除去や活動の操作による学習の遂行行動に及ぼす影響を検討する事で、それぞれの経路の学習制御機構を解明する。

Outline of Final Research Achievements

The striatum, the central neuronal nucleus of the basal ganglia, is a brain region important for learning. The basal ganglia neural circuit has two output pathways from the striatum: a direct striatal pathway that projects to the substantia nigra and an indirect striatal pathway that projects to the globus pallidus. They act antagonistically, and the proper balance between them makes learning possible. Disruption of the balance directly leads to dysfunction of the basal ganglia circuit, which in turn leads to the development of diseases with cognitive impairment. However, due to technical difficulties, the role of each pathway in learning has not been fully understood. In this study, we attempted to develop a genetic manipulation technique to distinguish each pathway and remove the targeted pathway specifically.

Academic Significance and Societal Importance of the Research Achievements

本研究によって得られた知見は、高次機能障害に対する新しい治療法の確立につながる事が期待される。

Report

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

    (4 results)

All 2023 2022

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (1 results)

  • [Journal Article] 2. Highly selective transgene expression through the flip-excision switch system by using a unilateral spacer sequence.2023

    • Author(s)
      Matsushita, N.*, Kato, S.*, Nishizawa, K., Sugawara, M., Takeuchi, K., Miyasaka, Y., Mashimo, T. and Kobayashi, K. * Equal contribution
    • Journal Title

      Cell Rep. Methods

      Volume: 3 Issue: 2 Pages: 100393-100393

    • DOI

      10.1016/j.crmeth.2022.100393

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Protocol for highly selective transgene expression through the flip-excision switch system by using a unilateral spacer sequence in rodents2023

    • Author(s)
      Matsushita Natsuki、Kato Shigeki、Nishizawa Kayo、Sugawara Masateru、Takeuchi Kosei、Miyasaka Yoshiki、Mashimo Tomoji、Kobayashi Kazuto
    • Journal Title

      STAR Protocols

      Volume: 4 Issue: 4 Pages: 102667-102667

    • DOI

      10.1016/j.xpro.2023.102667

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 3. Catecholaminergic cell type-specific expression of Cre recombinase in knock-in transgenic rats generated by the Combi-CRISPR technology.2022

    • Author(s)
      Matsushita, N., Nishizawa, K., Kato, S., Iguchi, Y., Fukabori, R., Takeuchi, K., Miyasaka, Y., Mashimo, T. and Kobayashi, K.
    • Journal Title

      J. Neurosci. Methods

      Volume: 381 Pages: 109707-109707

    • DOI

      10.1016/j.jneumeth.2022.109707

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Development of knock-in transgenic rats with catecholaminergic cell type-specific expression of Cre recombinase by the Combi-CRISPR technology2023

    • Author(s)
      Kayo Nishizawa
    • Organizer
      Neuroscience2023
    • Related Report
      2023 Annual Research Report

URL: 

Published: 2022-09-01   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi