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Elucidation of a new neutrophil cell death mechanism by the cell adhesion regulator Rap1

Research Project

Project/Area Number 21K06181
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 44010:Cell biology-related
Research InstitutionKansai Medical University

Principal Investigator

Kamioka Yuji  関西医科大学, 医学部, 講師 (50511424)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywordsshear flow / integrin / NETosis / Rap1 / mechanical stress / neutrophil / Netosis / outside-in / inside-out / 細胞接着 / 好中球細胞死 / インテグリン / 生体イメージング / 細胞死
Outline of Research at the Start

能動的なDNA放出を伴った好中球細胞死「NETosis」は生体防御として機能する一方で、 自己免疫疾患などの病態形成にも関与する。本研究ではRap1シグナル 各分子のノックアウトマウス由来好中球を用いて、細胞接着依存性のNETosis誘導メカニズムを探る。好中球が遺伝子導入操作で容易に活性化してしまう問題点は、Rap1シグナル各分子のノックアウトマウス由来好中球を用いることで解決できる。また、申請者が立ち上げた生体イメージング系を用いてin vivoでのNETosis誘導メカニズムを調べる。

Outline of Final Research Achievements

In this research project, the generation of neutrophil-specific visualization mice and neutrophil-specific knockout mice were completed as planned. However, due to the malfunction of our two-photon laser microscope and other equipments, I was unable to achieve the planned in vivo and in vitro fluorescence imaging experiments. While there are challenges and problems in the reproducibility, data acquisition methods, and analysis methods for the quantitative image evaluation of NETosis, the advancement of image AI analysis technology is making it possible to train and classify a large number of images by commercially available softwares. Compared to the time of this project application, the benefits of developing an image classification program with my own hands have almost disappeared. But I have advanced the analysis under shear flow conditions that mimic physiological blood flow within blood vessels.

Academic Significance and Societal Importance of the Research Achievements

NETosisに関する研究報告は増加傾向であり、その分子メカニズムやいくつかの病態との関連についても新しい知見が増えてきている。一方で、生体または生体に近い環境下でNETosisを評価する手法は未だに不十分な状況である。本研究成果では血流環境下での細胞接着シグナルと細胞動態を評価することができた。血流流れ刺激を含めた新しい視点により、NETosis関連疾患の解明や創薬へ繋げられる可能性が出てきた。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (20 results)

All 2024 2023 2022 2021 Other

All Int'l Joint Research (3 results) Journal Article (5 results) (of which Int'l Joint Research: 4 results,  Peer Reviewed: 5 results,  Open Access: 5 results) Presentation (9 results) Remarks (3 results)

  • [Int'l Joint Research] UNC-Chapel Hill(米国)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Inserm/University of Lille/Institut Pasteur de Lille(フランス)

    • Related Report
      2023 Annual Research Report
  • [Int'l Joint Research] Hanoi Medical University/National Children Hospital(ベトナム)

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Mouse eosinophil‐associated ribonuclease‐2 exacerbates the allergic response2024

    • Author(s)
      Nguyen Linh Manh、Kanda Akira、Kamioka Yuji、Tokuhiro Keizo、Kobayashi Yoshiki、Yun Yasutaka、Bui Dan Van、Chu Hanh Hong、Le Nhi Kieu Thi、Suzuki Kensuke、Mitani Akitoshi、Shimamura Akihiro、Fukui Kenta、Dombrowicz David、Iwai Hiroshi
    • Journal Title

      Allergy

      Volume: - Issue: 8 Pages: 1-5

    • DOI

      10.1111/all.16061

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Distinct bidirectional regulation of LFA1 and α4β7 by Rap1 and integrin adaptors in T?cells under shear flow2023

    • Author(s)
      Kamioka Yuji、Ueda Yoshihiro、Kondo Naoyuki、Tokuhiro Keizo、Ikeda Yoshiki、Bergmeier Wolfgang、Kinashi Tatsuo
    • Journal Title

      Cell Reports

      Volume: 42 Issue: 6 Pages: 112580-112580

    • DOI

      10.1016/j.celrep.2023.112580

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Rap1 organizes lymphocyte front-back polarity via RhoA signaling and talin12023

    • Author(s)
      Ueda Yoshihiro、Higasa Koichiro、Kamioka Yuji、Kondo Naoyuki、Horitani Shunsuke、Ikeda Yoshiki、Bergmeier Wolfgang、Fukui Yoshinori、Kinashi Tatsuo
    • Journal Title

      iScience

      Volume: 26 Issue: 8 Pages: 107292-107292

    • DOI

      10.1016/j.isci.2023.107292

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The critical role of Rap1-GAPs Rasa3 and Sipa1 in T cells for pulmonary transit and egress from the lymph nodes2023

    • Author(s)
      Horitani Shunsuke、Ueda Yoshihiro、Kamioka Yuji、Kondo Naoyuki、Ikeda Yoshiki、Naganuma Makoto、Kinashi Tatsuo
    • Journal Title

      Frontiers in Immunology

      Volume: 14 Pages: 1234747-1234747

    • DOI

      10.3389/fimmu.2023.1234747

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Thymocyte Development of Humanized Mice Is Promoted by Interactions with Human-Derived Antigen Presenting Cells upon Immunization2023

    • Author(s)
      Fukuhara Takataro、Ueda Yoshihiro、Lee Sung-Il、Odaka Tokifumi、Nakajima Shinsuke、Fujisawa Jun-Ichi、Okuma Kazu、Naganuma Makoto、Okazaki Kazuichi、Kondo Naoyuki、Kamioka Yuji、Matsumoto Mitsuru、Kinashi Tatsuo
    • Journal Title

      International Journal of Molecular Sciences

      Volume: 24 Issue: 14 Pages: 11705-11705

    • DOI

      10.3390/ijms241411705

    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Distinct bidirectional regulation of integrins by Rap1, talin1 and kindlin-3 in T cells under shear flow2024

    • Author(s)
      Yuji Kamioka, Yoshihiro Ueda, Naoyuki Kondo, Tatsuo Kinashi
    • Organizer
      第52回日本免疫学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Rap1-GAPs Rasa3 and Sipa1 are required for pulmonary transit and egress from the lymph nodes in T cells.2024

    • Author(s)
      Shunsuke Horitani, Yoshihiro Ueda, Yuji Kamioka, Naoyuki Kondo, Makoto Naganuma, Tatsuo Kinashi
    • Organizer
      第52回日本免疫学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Rap1-Talin1 axis facilitates front-back cell polarity independent of talin1 binding to integrins in lymphocyes2024

    • Author(s)
      Yoshihiro Ueda, Koichiro Higasa, Yuji Kamioka, Naoyuki Kondo, Shunsuke Horitani, Yoshiki Ikeda, Wolfgang Bergmeier, Yoshinori Fukui, Tatsuo Kinashi
    • Organizer
      第52回日本免疫学会学術集会
    • Related Report
      2023 Annual Research Report
  • [Presentation] Subsecond Rap1 activation by outside-in signaling of LFA1/ICAM1 interactions strengthens L-selectin mediated rolling of T cells.2022

    • Author(s)
      Yuji Kamioka, Yoshihiro Ueda, Naoyuki Kondo, Yoshiki Ikeda, Tatsuo Kinashi
    • Organizer
      The 51st Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2022 Research-status Report
  • [Presentation] Distinct binding properties of integrin adaptors talin1 and kindlin-3 to LFA1 and α4 integrins modulate adhesive responses in static and shear-flow conditions2022

    • Author(s)
      Naoyuki Kondo, Yuji Kamioka, Yoshiki Ikeda, Yoshihiro Ueda, Tatsuo Kinashi
    • Organizer
      The 51st Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2022 Research-status Report
  • [Presentation] Rap1 facilitates cell polarization via RhoA signaling in T cells2022

    • Author(s)
      Yoshihiro Ueda, Koichiro Higasa, Yuji Kamioka, Naoyuki Kondo, Shunsuke Horitani, Yoshiki Ikeda,Takataro Fukuhara, Yoshinori Fukui, Tatsuo Kinashi
    • Organizer
      The 51st Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2022 Research-status Report
  • [Presentation] The critical role of Rap1GAPs in T cell recirculation and egress from lymph node2022

    • Author(s)
      Shunsuke Horitani, Yoshihiro Ueda, Yuji Kamioka, Naoyuki Kondo, Yoshiki Ikeda, Takataro Fukuhara,Makoto Naganuma, Tatsuo Kinashi
    • Organizer
      The 51st Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2022 Research-status Report
  • [Presentation] Differential requirement of Rap1 and integrin adaptors for distinct modalities of T cell adhesion under shear flow2021

    • Author(s)
      Y. Kamioka, Y. Ueda, N. Kondo, T. Kinashi
    • Organizer
      The 50th Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2021 Research-status Report
  • [Presentation] Rap1 facilitates T cell polarity via spatial regulation of MLC and ARAP12021

    • Author(s)
      Y. Ueda, K. Higasa, Y. Kamioka, N. Kondo, T. Kinashi,
    • Organizer
      The 50th Annual Meeting of the Japanese Society for Immunology
    • Related Report
      2021 Research-status Report
  • [Remarks] 細胞接着分子インテグリンごとに異なる活性化メカニズムを発見

    • URL

      https://www.kmu.ac.jp/news/laaes7000000p1ar-att/20230622Press_Release.pdf

    • Related Report
      2023 Annual Research Report
  • [Remarks] 関西医科大学 附属生命医学研究所 分子遺伝学部門

    • URL

      http://www3.kmu.ac.jp/molgent/

    • Related Report
      2022 Research-status Report
  • [Remarks] 関西医科大学附属生命医学研究所 分子遺伝学部門

    • URL

      http://www3.kmu.ac.jp/molgent/

    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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