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2018 Fiscal Year Annual Research Report

Intracellular signaling machinery that regulates endocytosis and uptake of exogenous factors(Fostering Joint International Research)

Research Project

Project/Area Number 15KK0290
Research InstitutionHokkaido University

Principal Investigator

大場 雄介  北海道大学, 医学研究院, 教授 (30333503)

Project Period (FY) 2016 – 2018
Keywords蛍光イメージング / シグナル伝達 / エンドサイトーシス
Outline of Annual Research Achievements

3月~9月の期間米国海洋生物学研究所(Marine Biological Laboratory, MBL)に滞在し、全反射型蛍光偏光顕微鏡の基礎を学び、その構築法を習得した。既存の観察側の偏光分光に加え、励起側の偏光を制御する光学系を開発し、その光学系を実際に構築した。また、蛍光タンパク質を細胞膜との相対角度が常に一定になるように固定し、蛍光タンパク質の双極子の方向が細胞膜のトポロジーに対して一定に配向するバイオセンサーを構築した。このバイオセンサーを発現する細胞膜を上記蛍光偏光顕微鏡で観察したところ、細胞膜なダイナミックな微小な変形、エンドサイトーシスの初期の膜変形などを、蛍光強度の変化として捉えることが可能になった。これらの変化はすべてが光学顕微鏡の回折限界以下の領域で生じる現象であり、新しい超解像観察技術へと発展が期待できる。さらに、膜への局在化シグナルの一部に脂質認識部位を導入することで、膜の組成変化を蛍光偏光の変化として捉えるバイオセンサーも構築した。
帰国後、MBL訪問研究者と連絡を取りながら光学素子と部材の選定を行い、必要機器を入手した。その後、自らの手で全反射型蛍光偏光顕微鏡を研究室にセットアップし、稼働させた。2月にはMBLの受け入れ研究者を日本に招き、セットアップした顕微鏡をon siteで確認した。また、意見交換と今後の研究展開について協議し、新規蛍光偏光顕微鏡のプランを共同で立案した。現在はその新しい蛍光変更顕微鏡のセットアップを行っており、まもなく稼働予定である。

  • Research Products

    (14 results)

All 2019 2018

All Int'l Joint Research (1 results) Journal Article (5 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 5 results,  Open Access: 3 results) Presentation (8 results)

  • [Int'l Joint Research] Marine Biological Laboratory(米国)2018

    • Year and Date
      2018-03-15 – 2018-03-26 | 2018-04-232018-06-02 | 2018-06-092018-07-22 | 2018-07-292018-09-20
    • Country Name
      U.S.A.
    • Counterpart Institution
      Marine Biological Laboratory
    • Co-investigator Overseas
      Tomoni Tani
    • Job Title
      Associate Scientist
  • [Journal Article] A peptide derived from phosphoinositide 3-kinase inhibits endocytosis and influenza virus infection.2019

    • Author(s)
      Yoichiro Fujioka, Aya O. Satoh, Kosui Horiuchi, Mari Fujioka, Kaori Tsutsumi, Junko Sasaki, Prabha Nepal, Sayaka Kashiwagi, Sarad Paudel, Shinya Nishide, Asuka Nanbo, Takehiko Sasaki, Yusuke Ohba
    • Journal Title

      Cell Structure and Function

      Volume: in Press Pages: in Press

    • DOI

      doi.org/10.1247/csf.19001

    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] A Sialylated Voltage-Dependent Ca2+Channel Binds Hemagglutinin and Mediates Influenza A Virus Entry into Mammalian Cells2018

    • Author(s)
      Yoichiro Fujioka, Shinya Nishide, Toyoyuki Ose, Tadaki Suzuki, Izumi Kato, Hideo Fukuhara, Mari Fujioka, Kosui Horiuchi, Aya O. Satoh, Prabha Nepal, Sayaka Kashiwagi, Jing Wang, Mika Horiguchi, Yuko Sato, Sarad Paudel, Asuka Nanbo, Tadaaki Miyazaki, Hideki Hasegawa, Katsumi Maenaka, Yusuke Ohba
    • Journal Title

      Cell Host & Microbe

      Volume: 23 Pages: 809-818.e5

    • DOI

      doi.org/10.1016/j.chom.2018.04.015

    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The role of transforming growth factor β in cell-to-cell contact-mediated Epstein-Barr virus transmission.2018

    • Author(s)
      A. Nanbo, M. Ohashi, H. Yoshiyama and Y. Ohba.
    • Journal Title

      Front Microbiol

      Volume: 9 Pages: 984

    • DOI

      10.3389/fmicb.2018.00984

    • Peer Reviewed / Open Access
  • [Journal Article] Infection of Epstein-Barr virus in type III latency modulates biogenesis of exosomes and the expression profile of exosomal miRNAs in the Burkitt lymphoma Mutu cell lines.2018

    • Author(s)
      A. Nanbo, H. Katano, M. Kataoka, S. Hoshina, T. Sekizuka, M. Kuroda and Y. Ohba.
    • Journal Title

      Cancers

      Volume: 10 Pages: 237

    • DOI

      10.3390/cancers10070237

    • Peer Reviewed
  • [Journal Article] Budding of Ebola Virus Particles Requires the Rab11-Dependent Endocytic Recycling Pathway.2018

    • Author(s)
      A. Nanbo and Y. Ohba.
    • Journal Title

      J Infect Dis

      Volume: 218 Pages: S388-S396

    • DOI

      10.1093/infdis/jiy460

    • Peer Reviewed / Open Access
  • [Presentation] Fluorescence Imaging of membrane dynamics and intracellular signaling2019

    • Author(s)
      Yusuke Ohba
    • Organizer
      The 9th Federation of Asian and Oceanian Physiological Societies Congress (FAOPS2019) in conjunction with the 96th Annual Meeting of the Physiological Society of Japan
  • [Presentation] A PI3K-derived peptide inhibits clathrin-independent endocytosis and influenza virus infection2018

    • Author(s)
      Yoichiro Fujioka, Aya O Satoh, Kosui Horiuchi, Mari Fujioka, Sarad Paudel, Asuka Nanbo, Yusuke Ohba
    • Organizer
      第70回日本細胞生物学会
  • [Presentation] Involvement of actin dynamics in the endocytic process revealed by fast-scanning atomic force microscopy2018

    • Author(s)
      Aiko Yoshida, Nobuaki Sakai, Yoshitsugu Uekusa, Shige H Yoshimura, Yusuke Ohba
    • Organizer
      第70回日本細胞生物学会
  • [Presentation] The role of an Na,K-ATPase in spatiotemporal regulation of Ras- PI3K signaling and endocytosis2018

    • Author(s)
      Sayaka Kashiwagi, Yoichiro Fujioka, Kosui Horiuchi, Aya O Satoh, Prabha Nepal, Aiko Yoshida, Sarad Paudel, Asuka Nanbo, Yusuke Ohba
    • Organizer
      第70回日本細胞生物学会
  • [Presentation] A mitochondrial outer membrane protein is involved in the regulation of Ras-PI3K signaling-mediated endocytosis2018

    • Author(s)
      Aya O Satoh, Yoichiro Fujioka, Kosui Horiuchi, Prabha Nepal, Sayaka Kashiwagi, Aiko Yoshida, Mari Fujioka, Sarad Paudel, Asuka Nanbo, Yusuke Ohba
    • Organizer
      第70回日本細胞生物学会
  • [Presentation] Development of FRET-based biosensors for measuring tyrosine kinase activity in living cells2018

    • Author(s)
      Mari Fujioka, Yoichiro Fujioka, Aya O Satoh, Prabha Nepal, Sayaka Kashiwagi, Aiko Yoshida, Sarad Paudel, Asuka Nanbo, Yusuke Ohba
    • Organizer
      第70回日本細胞生物学会
  • [Presentation] The Role of tubulin in the regulation of endocytosis mediated by Ras-PI3K signaling2018

    • Author(s)
      Sarad Paudel, Yoichiro Fujioka, Aya O. Satoh, Mari Fujioka, Kosui Horiuchi, Prabha Nepal, Sayaka Kashiwagi, Aiko Yoshida, Asuka Nanbo, Yusuke Ohba
    • Organizer
      第70回日本細胞生物学会
  • [Presentation] Role of inner mitochondrial membrane proteins in the regulation of endocytosis mediated by Ras-PI3K signaling2018

    • Author(s)
      Prabha Nepal, Yoichiro Fujioka, Aya O. Satoh, Kosui Horiuchi, Sarad Paudel, Sayaka Kashiwagi, Aiko Yoshida, Mari Fujioka, Asuka Nanbo, Yusuke Ohba
    • Organizer
      第70回日本細胞生物学会

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Published: 2019-12-27  

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