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Establishment of substrates for receptor tyrosine phosphatase and its application

Research Project

Project/Area Number 19K07348
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48040:Medical biochemistry-related
Research InstitutionNagoya University

Principal Investigator

SAKAMOTO Kazuma  名古屋大学, 医学系研究科, 准教授 (60612801)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2020: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords受容体型チロシンホスファターゼ / 軸索再生 / 近位依存性標識 / 基質 / タンパク質相互作用 / 受容体型チロシンフォスファターゼ / オートファジー / 質量分析 / リン酸化 / 近位依存性ビオチン標識法 / プロテオミクス / 脱リン酸化
Outline of Research at the Start

受容体型チロシンフォスファターゼ(RPTP)ファミリーはおよそ20の分子からなる。それぞれ特異的なタンパク質のリン酸化チロシンを脱リン酸化し、その基質分子の活性を調節する、いわゆる分子スイッチとして働いている。特に神経系でその重要性が認識されており、研究代表者は、PTPRσと呼ばれるRPTPの基質としてCortactinを同定し、これが軸索再生阻害に繋がることを示した。しかし一般に、RPTPの基質分子の多くが未だ不明のため、創薬などの標的となるには心もとない。
本研究では、近位依存性ビオチン標識法を基盤に、RPTPの基質分子を網羅的に同定する手法の確立を目指す。

Outline of Final Research Achievements

In this study, I aimed to establish a method for the comprehensive identification of substrates of receptor-type tyrosine phosphatases (RPTPs). In particular, we focused on PTPσ, a member of the RPTP family that is involved in the inhibition of axon regeneration in the central nervous systems. I applied a proximity-dependent ligation assay to identify the interacting molecules for PTPσ. As a result, approximately 100 proteins were identified as PTPσ interactors. This list included already-known interactors such as Liprin-α and Trio. Among these molecules, those involved in axon elongation were validated for their tyrosine phosphorylation and dephosphorylation by PTPσ. Together, a proximity-dependent ligation assay seems to be a powerful tool for the comprehensive identification of substrates for RPTP.

Academic Significance and Societal Importance of the Research Achievements

近位依存性標識法を用いることにより、これまでに困難であったRPTPの基質同定を簡便に行うことができることを示した。既知分子も再現性よくフォローされており、本手法は信頼性も十分に担保されている。これまでにRPTPは神経疾患やがん、炎症性疾患や代謝性疾患に関与していることが報告されている。ヒト疾患において標的とするには、基質分子の不明瞭さが律速段階になっていたが、本手法の利用により、RPTPのバイオロジーの理解につながることが期待できる。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (18 results)

All 2022 2021 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 9 results,  Open Access: 8 results) Presentation (6 results) (of which Int'l Joint Research: 3 results,  Invited: 2 results) Book (1 results)

  • [Int'l Joint Research] Universidad de Sevilla(スペイン)

    • Related Report
      2021 Annual Research Report
  • [Int'l Joint Research] Academia Sinica(その他の国・地域)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Close Association of Polarization and LC3, a Marker of Autophagy, in Axon Determination in Mouse Hippocampal Neurons2022

    • Author(s)
      Naoki Segi、Tomoya Ozaki、Yuji Suzuki、Jun Ouchida、Shiro Imagama、Kenji Kadomatsu、Kazuma Sakamoto
    • Journal Title

      Experimental Neurology

      Volume: -

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enoxaparin promotes functional recovery after spinal cord injury by antagonizing PTPRσ2021

    • Author(s)
      Ito S, Ozaki T, Morozumi M, Imagama S, Kadomatsu K, Sakamoto K.
    • Journal Title

      Exp. Neurol.

      Volume: 340 Pages: 113679-113679

    • DOI

      10.1016/j.expneurol.2021.113679

    • Related Report
      2021 Annual Research Report 2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Midkine Interaction with Chondroitin Sulfate Model Synthetic Tetrasaccharides and Their Mimetics: The Role of Aromatic Interactions2021

    • Author(s)
      Garca‐Jimenez Maria Jose、Gil‐Caballero Sergio、Maza Susana、Corzana Francisco、Juarez‐Vicente Francisco、Miles Jonathan R.、Sakamoto Kazuma、Kadomatsu Kenji、Garciao Dominguez Mario、Paz Jose L.、Nieto Pedro M.
    • Journal Title

      Chemistry A European Journal

      Volume: 27 Issue: 48 Pages: 12395-12409

    • DOI

      10.1002/chem.202101674

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Axonal Regeneration by Glycosaminoglycan2021

    • Author(s)
      Sakamoto Kazuma、Ozaki Tomoya、Kadomatsu Kenji
    • Journal Title

      Frontiers in Cell and Developmental Biology

      Volume: 9

    • DOI

      10.3389/fcell.2021.702179

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Type IIa RPTPs and Glycans: Roles in Axon Regeneration and Synaptogenesis2021

    • Author(s)
      Sakamoto Kazuma、Ozaki Tomoya、Suzuki Yuji、Kadomatsu Kenji
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 22 Issue: 11 Pages: 5524-5524

    • DOI

      10.3390/ijms22115524

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Dermatan sulphate is an activating ligand of anaplastic lymphoma kinase2021

    • Author(s)
      Machino Masaaki、Gong Yuanhao、Ozaki Tomoya、Suzuki Yuji、Watanabe Eri、Imagama Shiro、Kadomatsu Kenji、Sakamoto Kazuma
    • Journal Title

      The Journal of Biochemistry

      Volume: 170 Issue: 5 Pages: 631-637

    • DOI

      10.1093/jb/mvab085

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Identification of PTPRσ-interacting proteins by proximity-labelling assay.2021

    • Author(s)
      Gong Y, Abudureyimu S, Kadomatsu K, Sakamoto K.
    • Journal Title

      J Biochem.

      Volume: 162 Issue: 2 Pages: 187-194

    • DOI

      10.1093/jb/mvaa141

    • NAID

      40022513442

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Regulation of axonal regeneration and its inhibition by glycan ligands2021

    • Author(s)
      Sakamoto K.
    • Journal Title

      Trends Glycosci. Glycotechnol.

      Volume: -

    • NAID

      130008042849

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] Glycan sulfation patterns define autophagy flux at axon tip via PTPRσ-cortactin axis2019

    • Author(s)
      Kazuma Sakamoto, Tomoya Ozaki, Yen-Chun Ko, Cheng-Fang Tsai, Yuanhao Gong, Masayoshi Morozumi, Yoshimoto Ishikawa, Kenji Uchimura, Satomi Nadanaka, Hiroshi Kitagawa, Medel Manuel L. Zulueta, Anandaraju Bandaru, Jun-ichi Tamura, Shang-Cheng Hung, and Kenji Kadomatsu
    • Journal Title

      Nat. Chem. Biol.

      Volume: 15 Issue: 7 Pages: 699-699

    • DOI

      10.1038/s41589-019-0274-x

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] 糖鎖リガンドによる軸索再生阻害機構の解明2021

    • Author(s)
      坂元一真
    • Organizer
      第40回日本糖質学会 奨励賞受賞講演
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] へパラン硫酸はALK を介して中枢神経軸索再生を促進する2020

    • Author(s)
      坂元一真 Gong Yuanhao 尾崎智也 門松健治
    • Organizer
      第39回日本糖質学会
    • Related Report
      2020 Research-status Report
  • [Presentation] エノキサパリンはPTPRσを阻害することにより、神経損傷後機能回復を促進す2020

    • Author(s)
      坂元一真 伊藤定之 尾崎智也 門松健治
    • Organizer
      第93回日本生化学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] Enoxaparin promotes recovery after nerve injury by antagonizing PTPRσ2019

    • Author(s)
      Kazuma Sakamoto, Sadayuki Ito, Tomoya Ozaki, Kenji Kadomatsu
    • Organizer
      PG 2019 Proteoglycans Future Leaders Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Glycans and dystrophic endball2019

    • Author(s)
      Kazuma Sakamoto
    • Organizer
      Glyco-Neuroscience Workshop
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Chondroitin sulfate and heparan sulfate determine axonal regeneration and its inhibition through PTPRσ-Cortactin-Autophagy axis2019

    • Author(s)
      Kazuma Sakamoto, Kenji Kadomatsu
    • Organizer
      HUPO 2019
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Book] 生化学2020

    • Author(s)
      硫酸化糖鎖によるDystrophic endball形成機構
    • Total Pages
      4
    • Publisher
      日本生化学会
    • Related Report
      2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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