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spatiotemporal analysis of macropinocytosis using optogenetics

Research Project

Project/Area Number 26860136
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field General anatomy (including histology/embryology)
Research InstitutionKagawa University

Principal Investigator

kawai katsuhisa  香川大学, 医学部, 助教 (80534510)

Co-Investigator(Renkei-kenkyūsha) Miyake Katsuya  国際医療福祉大学, 成田保険医療学部, 教授 (30219745)
Research Collaborator Sawada Kouichi  香川大学, 医学部, 学生
Nishigaki Arata  香川大学, 医学部, 学生
Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2014: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsmacropinocytosis / endocytosis / Rab / マクロパイノサイトーシス / 光遺伝学 / メンブレントラッフィク / イノシトールリン脂質 / Rac1 / アクチン細胞骨格
Outline of Final Research Achievements

Macropinocytosis is a non-selective uptake of liquid phase. In a previous study, we established an experimental system to induce macropionocytosis in specified region of cells using photo-activatable Rac1 (PA-Rac1) in macrophage culture cells, RAW264. It was revealed that PA-Rac1- induced micropinocytosis is different characteristics from typical micropinocytosis in several points. We found that Rab10 and its effector EHBP1 are transiently accumulated in macropinosomes during the novel micropinocytosis. Rab10 positive macropinosomes budded tubular structures and disappeared at the same time. In addition, it became clear that formation of tubular structures requires down-regulation of Rac1 activities. Furthermore, it was revealed that some of Rab10-positive macropinosomes and tubular structures budding from them are open structures. These results suggest that PA-Rac1-induced micropinocytosis is a novel uptake pathway different from the typical type.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (18 results)

All 2017 2016 2015 2014 Other

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 4 results,  Acknowledgement Compliant: 2 results) Presentation (12 results) Remarks (1 results)

  • [Journal Article] Cofilin contributes to phagocytosis of IgG-opsonized particles but not non-opsonized particles in RAW264 macrophages2016

    • Author(s)
      Lu Y, Cao L, Egami Y, Kawai K, Araki N
    • Journal Title

      Microscopy (Oxf)

      Volume: -- Issue: 3 Pages: 233-242

    • DOI

      10.1093/jmicro/dfv376

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Invention of a novel photodynamic therapy for tumors using a photosensitizing PI3K inhibitor2016

    • Author(s)
      Hayashida Y, Ikeda Y, Sawada K, Kawai K, Kato T, Kakehi Y, Araki N
    • Journal Title

      Int J Cancer

      Volume: -- Issue: 3 Pages: 700-711

    • DOI

      10.1002/ijc.30097

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Activation-Inactivation Cycling of Rab35 and ARF6 Is Required for Phagocytosis of Zymosan in RAW264 Macrophages2015

    • Author(s)
      Egami Y, Fujii M, Kawai K, Ishikawa Y, Fukuda M, Araki N
    • Journal Title

      J Immunol Res.

      Volume: 2015 Pages: 429439-429439

    • DOI

      10.1155/2015/429439

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Development of an automated fluorescence microscopy system for photomanipulation of genetically encoded photoactivatable proteins (optogenetics) in live cells.2014

    • Author(s)
      Araki N, Ikeda Y, Kato T, Kawai K, Egami Y, Miyake K, Tsurumaki N, Yamaguchi M.
    • Journal Title

      Microscopy (Oxf).

      Volume: 63 Issue: 3 Pages: 255-260

    • DOI

      10.1093/jmicro/dfu003

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Rac1-dependent lamellipodial motility in prostate cancer pc-3 cells revealed by optogenetic control of Rac1 activity.2014

    • Author(s)
      Kato, T., Kawai, K., Egami, Y. Kakehi, Y., Araki, N
    • Journal Title

      PLOS ONE

      Volume: 9 Issue: 5 Pages: e97749-e97749

    • DOI

      10.1371/journal.pone.0097749

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] 新規マクロパイノサイトーシス関連経路の形態と分子基盤2017

    • Author(s)
      川合克久、江上洋平、荒木伸一
    • Organizer
      第122回日本解剖学会総会・全国学術集会
    • Place of Presentation
      長崎市
    • Year and Date
      2017-03-28
    • Related Report
      2016 Annual Research Report
  • [Presentation] マクロパイノゾームへのRab10局在化機構の解析2016

    • Author(s)
      西垣新、沢田光一、川合克久、荒木伸一
    • Organizer
      日本解剖学会第71回中国・四国支部学術集会
    • Place of Presentation
      岡山市
    • Year and Date
      2016-10-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] Rab10陽性マクロパイノサイトーシスのライブイメージング解析2016

    • Author(s)
      川合克久、西垣新、荒木伸一
    • Organizer
      日本解剖学会第71回中国・四国支部学術集会
    • Place of Presentation
      岡山市
    • Year and Date
      2016-10-22
    • Related Report
      2016 Annual Research Report
  • [Presentation] RhoC GTPase regulates phagosome formation through mDia1 promoting actin assembly during FcγR-mediated phagocytosis in macrophages.2015

    • Author(s)
      Egami, Y., Kawai, K., Araki, N.
    • Organizer
      第120回 日本解剖学会総会・全国学術集会
    • Place of Presentation
      兵庫県神戸市
    • Year and Date
      2015-03-21 – 2015-03-23
    • Related Report
      2014 Research-status Report
  • [Presentation] ab10-positive macropinosome-like structures provide a novel endocytic pathway.2015

    • Author(s)
      Kawai, K., Nishigaki, A., Egami, Y., Araki N.
    • Organizer
      第120回 日本解剖学会総会・全国学術集会
    • Place of Presentation
      兵庫県神戸市
    • Year and Date
      2015-03-21 – 2015-03-23
    • Related Report
      2014 Research-status Report
  • [Presentation] Molecular mechanism of phagosome formation by Rac1switching control both in space and time.2015

    • Author(s)
      Ikeda, Y., Kawai, K., Araki, N.
    • Organizer
      第120回 日本解剖学会総会・全国学術集会
    • Place of Presentation
      兵庫県神戸市
    • Year and Date
      2015-03-21 – 2015-03-23
    • Related Report
      2014 Research-status Report
  • [Presentation] Sequential recruitments of Rab35, Rab8 and Rab10 during macropinosome formation.2015

    • Author(s)
      Nishigaki, A., Sawada, K., Yagi K., Kawai, K., Araki, N
    • Organizer
      第120回 日本解剖学会総会・全国学術集会
    • Place of Presentation
      兵庫県神戸市
    • Year and Date
      2015-03-21 – 2015-03-23
    • Related Report
      2014 Research-status Report
  • [Presentation] LRATに相同性を示すホスホリパーゼA1/A2型酵素によるペルオキシソーム形成の制御2015

    • Author(s)
      上田夏生,宇山徹,渡邊政博,坪井一人,川合克久,荒木伸一,河野望,新井洋由
    • Organizer
      第346回脂溶性ビタミン総合研究委員会
    • Place of Presentation
      東京
    • Year and Date
      2015-03-13
    • Related Report
      2014 Research-status Report
  • [Presentation] Regulation of peroxisome levels by PLA/acyltransferase-3.2015

    • Author(s)
      Uyama, T., Watanabe, M., Kawai, K., Kono, N., Tsuboi, K., Araki, N., Arai, H., Ueda, N.
    • Organizer
      The 6th International Conference on Phospholipase A2 and Lipid Mediators
    • Place of Presentation
      東京
    • Year and Date
      2015-02-10 – 2015-02-12
    • Related Report
      2014 Research-status Report
  • [Presentation] Optogenetic control of Rac1-dependent lamellipodial motility in prostate cancer PC-3 cells.2014

    • Author(s)
      Kato, T., Kawai, K., Egami, Y., Araki, N., Kakehi, Y.
    • Organizer
      第66回西日本泌尿器学会総会
    • Place of Presentation
      岡山県倉敷市
    • Year and Date
      2014-11-06 – 2014-11-08
    • Related Report
      2014 Research-status Report
  • [Presentation] 細胞膜修復時におけるアネキシン,MICAL1およびアネキシン結合タンパクS100タンパクの動態とエクトサイトーシス2014

    • Author(s)
      三宅克也,松田知栄,濵田萌,川合克久,江上洋平,林由起子,荒木伸一
    • Organizer
      日本解剖学会第68回中国・四国支部学術集会
    • Place of Presentation
      鳥取県米子市
    • Year and Date
      2014-10-19 – 2014-10-20
    • Related Report
      2014 Research-status Report
  • [Presentation] RhoC GTPaseはマクロファジーにおけるファゴゾーム形成に関与する2014

    • Author(s)
      江上洋平,川合克久,荒木伸一
    • Organizer
      第87回日本生化学会大会
    • Place of Presentation
      京都市
    • Year and Date
      2014-10-15 – 2014-10-18
    • Related Report
      2014 Research-status Report
  • [Remarks] 香川大学組織細胞生物学

    • URL

      http://www.kms.ac.jp/%7Eanatomy2/index.html

    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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