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Development of synthetic light-controllable molecules to regulate the function of cellular membrane proteins

Publicly Offered Research

Project AreaChemical Approaches for Miscellaneous / Crowding Live Systems
Project/Area Number 18H04537
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Research InstitutionThe University of Tokyo

Principal Investigator

小澤 岳昌  東京大学, 大学院理学系研究科(理学部), 教授 (40302806)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2019: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2018: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Keywords膜リセプター / 光操作 / GPCR / アップコンバージョン / CRY2 / ナノ粒子
Outline of Annual Research Achievements

前年度に構築した GPCR と β-Arrestin との相互作用を光制御する技術を発展させ,様々な膜タンパク質についてエンドサイトーシスを光誘起可能な新規光制御システムを構築した.
これまでバソプレシンV2受容体 (V2R) のC末端側領域のペプチド断片 (E-fragment) は,単体でArrestinCRYとの光依存的相互作用によりエンドサイトーシスを誘起するほか,様々なGPCRや非GPCR細胞膜タンパク質(Stargazin, TRPV2)についてエンドサイトーシスの誘導を確認した.このうちTRPV2については通常細胞膜に局在するが,E-fragmentを接続した場合に細胞膜局在効率が低下してしまう現象が確認されていた.そこで本年度は,TRPV2の光依存的エンドサイトーシス効率を改善するため,E-fragmentの接続方法について検討した.細胞膜局在効率低下の原因として,E-fragmentがTRPV2テトラマー形成を阻害している可能性,MisfoldのためERにトラップされている可能性などがあったため,GSリンカーの挿入 (GS-E-fragmentCIB)やER exportシグナルの付加(TS-E-fragmentCIB),E-fragmentの疎水性アミノ酸領域の削除 (E-fragmentΔ1-8CIB)を行った.共焦点顕微鏡でこれらの候補分子の細胞内局在を確認したところ,E-fragmentΔ1-8CIBについて細胞膜局在効率の大きな改善が確認された.さらに,発光タンパク質NanoLucの自発的再構成反応を用いて細胞膜表面のTRPV2を定量したところ,E-fragmentΔ1-8CIBでは光依存的なエンドサイトーシス効率が上昇していることが明らかとなった.現在,E-fragment融合型DRD2を恒常発現するトランスジェニックマウスを作成しており,今後成体脳神経細胞での応用を試行する予定である.またキナーゼ型膜タンパク質の光操作技術の開発も並行して行う予定である.

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • Research Products

    (25 results)

All 2019 2018 Other

All Int'l Joint Research (2 results) Journal Article (2 results) (of which Peer Reviewed: 2 results,  Open Access: 2 results) Presentation (21 results) (of which Int'l Joint Research: 11 results,  Invited: 18 results)

  • [Int'l Joint Research] NTU(シンガポール)

    • Related Report
      2019 Annual Research Report
  • [Int'l Joint Research] 南洋理工大学(シンガポール)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Photocleavable Cadherin Inhibits Cell-to-Cell Mechanotransduction by Light2019

    • Author(s)
      Endo Mizuki、Iwawaki Takumi、Yoshimura Hideaki、Ozawa Takeaki
    • Journal Title

      ACS Chemical Biology

      Volume: 14 Pages: 2206-2214

    • DOI

      10.1021/acschembio.9b00460

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Unique Roles of β-Arrestin in GPCR Trafficking Revealed by Photoinducible Dimerizers2018

    • Author(s)
      Takenouchi Osamu、Yoshimura Hideaki、Ozawa Takeaki
    • Journal Title

      Scientific Reports

      Volume: 8 Issue: 1 Pages: 1-11

    • DOI

      10.1038/s41598-017-19130-y

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] 細胞膜リセプターの機能を観る・操作する新たな技術2019

    • Author(s)
      小澤岳昌
    • Organizer
      生命化学研究会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 光で操作し観察する新たな細胞機能解析技術2019

    • Author(s)
      小澤岳昌
    • Organizer
      イメージングブートキャンプ2019
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] 生細胞解析を目指した改変型発光タンパク質の開発2019

    • Author(s)
      小澤岳昌
    • Organizer
      生化学会大会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Imaging and controlling membrane receptor activities in living cells.2019

    • Author(s)
      小澤岳昌
    • Organizer
      The 6th International Symposium on Bioimaging
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Optical Switches of Membrane Receptor Activities Using CRY22019

    • Author(s)
      小澤岳昌
    • Organizer
      生物物理学会第57回年会
    • Related Report
      2019 Annual Research Report
  • [Presentation] Imaging and controlling membrane receptor activities in living cells2019

    • Author(s)
      小澤岳昌
    • Organizer
      Optical & Molecular Imaging Workshop and Symposium (HOWS)
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Optical Sensors and Switches for Live Cell Analysis: Opto-bioanalysis2019

    • Author(s)
      小澤岳昌
    • Organizer
      3rd Asian Conference on Chemosensors & Imaging Probes (AsianChIP-2019)
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 光で操作し観察する新たな細胞膜リセプターの機能解析法2019

    • Author(s)
      小澤岳昌
    • Organizer
      スマートセルイノベーション研究センター講演会
    • Related Report
      2019 Annual Research Report
    • Invited
  • [Presentation] Protein-based luminescent sensors for single cell analysis.2018

    • Author(s)
      T. Ozawa
    • Organizer
      JSPS-NTS Bilateral Symposium on Functional Materials Chemistry
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 光で生体分子を操作し観察する新たな細胞解析技術2018

    • Author(s)
      小澤岳昌
    • Organizer
      日本分光学会年次講演会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Opto-bioanalysis: Imaging and controlling GPCR activities in living cells.2018

    • Author(s)
      T. Ozawa
    • Organizer
      IUBMB
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 生細胞内GPCR動態の可視化と制御2018

    • Author(s)
      小澤岳昌
    • Organizer
      生理研研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Imaging and Controlling GPCR activities in live cells.2018

    • Author(s)
      T. Ozawa
    • Organizer
      The 5th Asian Chemical Biology Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 光でタンパク質を操作し観察する細胞解析技術―オプトバイオアナリシス―2018

    • Author(s)
      小澤岳昌
    • Organizer
      日本分析化学会第67年会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Imaging and Controlling Protein Activities in Living Cells: Opto-bioanalysis.2018

    • Author(s)
      T. Ozawa
    • Organizer
      6th UT-UDS Joint Symposium on “Symmetry and Asymmetry in Science”
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Imaging and Manipulating Intracellular signals in Single Live Cells with External Light.2018

    • Author(s)
      T. Ozawa
    • Organizer
      the 10th International Forum on Post-Genomic Technology (IFPT’10) and the 11th International Workshop on Approaches to Single-Cell Analysis
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Novel Design of Luminescent Sensors and Optical Switches for Single Cell Analysis.2018

    • Author(s)
      T. Ozawa
    • Organizer
      4th International Symposium on Molecular Imaging and Nanomedicine
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Novel Optical Techniques to Explore the Functions of G Protein-coupled Receptors (GPCRs).2018

    • Author(s)
      T. Ozawa
    • Organizer
      5th International Conference on Innovative Biology Medicine and Engineering
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Novel design of luminescent sensors and optical switches for cellular analysis-Opto-bioanalysis-2018

    • Author(s)
      T. Ozawa
    • Organizer
      Hwasun Optical & Molecular Imaging Workshop and Symposium
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Imaging and Manipulating GPCRs in Live Cells with External Light2018

    • Author(s)
      T. Ozawa
    • Organizer
      10th Singapore International Chemistry Conference (SICC10)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 生命の神秘を光で探る―オプトバイオアナリシス―2018

    • Author(s)
      小澤岳昌
    • Organizer
      東京大学理学部公開講演会
    • Related Report
      2018 Annual Research Report
    • Invited

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Published: 2018-04-23   Modified: 2021-12-27  

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