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Molecular codes which determine the depth of final axonal stabilizing layer in the Drosophila

Research Project

Project/Area Number 18K06250
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44020:Developmental biology-related
Research InstitutionTokyo Institute of Technology

Principal Investigator

Hakeda-Suzuki Satoko  東京工業大学, 生命理工学院, 研究員 (90631482)

Project Period (FY) 2018-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywords軸索投射 / シナプス形成 / ショウジョウバエ / 視神経 / 視神経系
Outline of Final Research Achievements

In the Drosophila visual system, photoreceptor axons reach the correct layer in the middle pupal stage and start to form the synapses. To form the functional neuronal network, we hypothesized that the targeting layers are determined according to the molecular codes consisting of transmembrane proteins and cell adhesion molecules. We focused on the four molecules, LAR, Ptp69D, N-Cadherin (CadN) and Capricious(Caps) and tested genetically if they interact each other. Our results revealed that both CadN and Caps interact with LAR to stabilize the R7 photoreceptor axons to proper M6 layer.
We also analyzed the interaction between LAR and Neuroligin(Nlg) and its receptor Neurexin(Nrx) on synapse formation. Nlg is known to be required for synapse formation and interact with LAR in mammals. Among three Nlgs (Nlg1、Nlg2、Nlg3) in Drosophila, Nlg2 seemed to have function on synapse formation together with Nrx1.

Academic Significance and Societal Importance of the Research Achievements

脳神経系の正常な機能には、軸索が正しい位置に投射することが必要である。本研究では、ショウジョウバエの最大の強みである複雑な遺伝学的操作と、短期間で詳細な生体内機能解析が可能である利点を利用して、ショウジョウバエの視神経において複数の分子の発現を操作することにより、伝達回路形成の過程を解析した。その結果、神経の投射先は複数の分子の組み合わせによって決定されていることが分かった。このような、神経同士をつなぐ分子が解明されれば、人工的に神経接続を誘導することができるようになり、神経再生や移植の技術につながると考えている。

Report

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

    (13 results)

All 2021 2020 2019 2018 Other

All Journal Article (7 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 7 results,  Open Access: 4 results) Presentation (5 results) (of which Int'l Joint Research: 2 results) Remarks (1 results)

  • [Journal Article] Glial insulin regulates cooperative or antagonistic Golden goal/Flamingo interactions during photoreceptor axon guidance2021

    • Author(s)
      Takechi Hiroki、Hakeda-Suzuki Satoko、Nitta Yohei、Ishiwata Yuichi、Iwanaga Riku、Sato Makoto、Sugie Atsushi、Suzuki Takashi
    • Journal Title

      eLife

      Volume: 10

    • DOI

      10.7554/elife.66718

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Systematic identification of genes regulating synaptic remodeling in the <i>Drosophila</i> visual system2020

    • Author(s)
      Araki Tomohiro、Osaka Jiro、Kato Yuya、Shimozono Mai、Kawamura Hinata、Iwanaga Riku、Hakeda-Suzuki Satoko、Suzuki Takashi
    • Journal Title

      Genes & Genetic Systems

      Volume: 95 Issue: 3 Pages: 101-110

    • DOI

      10.1266/ggs.19-00066

    • NAID

      130007891308

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Cell surface molecule, Klingon, mediates the refinement of synaptic specificity in the Drosophila visual system2019

    • Author(s)
      Shimozono Mai、Osaka Jiro、Kato Yuya、Araki Tomohiro、Kawamura Hinata、Takechi Hiroki、Hakeda‐Suzuki Satoko、Suzuki Takashi
    • Journal Title

      Genes to Cells

      Volume: 24 Issue: 7 Pages: 496-510

    • DOI

      10.1111/gtc.12703

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] N-Cadherin Orchestrates Self-Organization of Neurons within a Columnar Unit in the Drosophila Medulla2019

    • Author(s)
      Trush Olena、Liu Chuyan、Han Xujun、Nakai Yasuhiro、Takayama Rie、Murakawa Hideki、Carrillo Jose A.、Takechi Hiroki、Hakeda-Suzuki Satoko、Suzuki Takashi、Sato Makoto
    • Journal Title

      The Journal of Neuroscience

      Volume: 39 Issue: 30 Pages: 5861-5880

    • DOI

      10.1523/jneurosci.3107-18.2019

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Transplantation of photoreceptor precursor cells into the retina of an adult Drosophila2018

    • Author(s)
      Suzuki Takahisa、Oochi Keita、Hakeda-Suzuki Satoko、Suzuki Takashi
    • Journal Title

      Development, Growth & Differentiation

      Volume: 60 Issue: 7 Pages: 442-453

    • DOI

      10.1111/dgd.12545

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] Netrin Signaling Defines the Regional Border in the Drosophila Visual Center2018

    • Author(s)
      Suzuki Takumi、Liu Chuyan、Kato Satoru、Nishimura Kohei、Takechi Hiroki、Yasugi Tetsuo、Takayama Rie、Hakeda-Suzuki Satoko、Suzuki Takashi、Sato Makoto
    • Journal Title

      iScience

      Volume: 8 Pages: 148-160

    • DOI

      10.1016/j.isci.2018.09.021

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Prepulse inhibition in Drosophila melanogaster larvae2018

    • Author(s)
      Matsumoto Yutaro、Shimizu Kazuya、Arahata Kota、Suzuki Miku、Shimizu Akira、Takei Koki、Yamauchi Junji、Hakeda-Suzuki Satoko、Suzuki Takashi、Morimoto Takako
    • Journal Title

      Biology Open

      Volume: 7 Issue: 9 Pages: 034710-034710

    • DOI

      10.1242/bio.034710

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Molecular codes which determine the depth of final axonal stabilizing layer in the Drosophila visual system2019

    • Author(s)
      Satoko-Hakeda Suzuki, Olena Trush, Makoto Sato, Takashi Suzuki
    • Organizer
      NEURO 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Molecular codes which determine the depth of final axonal stabilizing layer in the Drosophila visual system2019

    • Author(s)
      Satoko Hakeda-Suzuki , Hiroki Takechi , Takashi Suzuki
    • Organizer
      26th European Drosophila Research Conference
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] The transplantation of the retinal precursor cells into the adult Drosophila retina2018

    • Author(s)
      Satoko Hakeda-Suzuki, Takahisa Suzuki, Keita Oochi, Takashi Suzuki
    • Organizer
      Joint Annual Meeting of 51st JSDB and 70th JSCB
    • Related Report
      2018 Research-status Report
  • [Presentation] Two receptor tyrosine phosphatases dictate the depth of final axonal stabilizing layer in the Drosophila visual system2018

    • Author(s)
      Satoko Hakeda-Suzuki, Hiroki Takechi and Takashi Suzuki
    • Organizer
      The 41st Annual Meeting of the Japan Neuroscience Society
    • Related Report
      2018 Research-status Report
  • [Presentation] Two receptor tyrosine phosphatases dictate the depth of final axonal stabilizing layer in the Drosophila visual system2018

    • Author(s)
      Satoko Hakeda-Suzuki, Hiroki Takechi and Takashi Suzuki
    • Organizer
      The 41st Annual Meeting of the Molecular Biology Society of Japan
    • Related Report
      2018 Research-status Report
  • [Remarks] 東京工業大学 生命理工学院 鈴木崇之研究室

    • URL

      http://www.suzukit.bio.titech.ac.jp/japanese/index.html

    • Related Report
      2018 Research-status Report

URL: 

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

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