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Clarification of the mechanism of S1P-signaling-induced exosome maturation on tumor-promoting inflammation

Research Project

Project/Area Number 17K08594
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General pharmacology
Research InstitutionKobe University

Principal Investigator

Kajimoto Taketoshi  神戸大学, 医学研究科, 助教 (00509953)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Keywordsスフィンゴシン1-リン酸 / スフィンゴシン1-リン酸 / シグナル伝達 / バイオイメージング
Outline of Final Research Achievements

The goal of our project is discovery of a key molecular mechanism to develop new therapy against cancer. To figure out this purpose, in this project, we tried to make clear the detailed molecular mechanism of sphingosine 1-phosphate (S1P) signaling-induced exosome maturation on tumor-promoting inflammation. Then we discover that protein kinase c (aPKC) is constantly activating downstream of constant S1P signaling in cancer cells. Moreover we found that the S1P-aPKC signaling plays a critical role on tumor progression and tumor metastasis.

Academic Significance and Societal Importance of the Research Achievements

本研究成果のポイントは、これまでよく分かっていなかったエクソソームが関わる癌の増悪・遠隔転移の分子メカニズムについて、S1P-aPKCシグナリングという全く新たなキープレーヤーを見出した点である。また本研究の成果により、癌の増悪や遠隔転移に対して、S1P-aPKCシグナリングを分子レベルで制御する新たな治療法開発への道筋が示された。今後は、本研究成果を応用した新たながん治療法の実現へ向けて、S1P-aPKCシグナリングのさらに詳細な分子メカニズムの解明とリード化合物の創出を目指した分子標的創薬の研究を平行して進める。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (19 results)

All 2020 2019 2018 2017 Other

All Int'l Joint Research (2 results) Journal Article (8 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 5 results) Presentation (9 results) (of which Int'l Joint Research: 2 results,  Invited: 3 results)

  • [Int'l Joint Research] University of California San Diego(米国)

    • Related Report
      2019 Research-status Report
  • [Int'l Joint Research] University of California San Diego(米国)

    • Related Report
      2018 Research-status Report
  • [Journal Article] Apical-basal polarity inhibits epithelial-mesenchymal transition and tumour metastasis by PAR-complex-mediated SNAI1 degradation2019

    • Author(s)
      Jung HY, Fattet L, Tsai JH, Kajimoto T, Chang Q, Newton AC, Yang J
    • Journal Title

      Nature cell biology

      Volume: 21 Issue: 3 Pages: 359-371

    • DOI

      10.1038/s41556-019-0291-8

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Activation of atypical protein kinase C by sphingosine 1-phosphate revealed by an aPKC-specific activity reporter2019

    • Author(s)
      Kajimoto Taketoshi、Caliman Alisha D.、Tobias Irene S.、Okada Taro、Pilo Caila A.、Van An-Angela N.、Andrew McCammon J.、Nakamura Shun-ichi、Newton Alexandra C.
    • Journal Title

      Science Signaling

      Volume: 12 Issue: 562

    • DOI

      10.1126/scisignal.aat6662

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Quantitative Analysis of Cargo Density in Single-Extracellular Vesicles by Imaging2018

    • Author(s)
      Kajimoto Taketoshi、Nakamura Shun-ichi
    • Journal Title

      BIO-PROTOCOL

      Volume: 8 Issue: 24 Pages: 3111-3111

    • DOI

      10.21769/bioprotoc.3111

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Extracellular α-synuclein drives sphingosine 1-phosphate receptor subtype 1 out of lipid rafts, leading to impaired inhibitory G protein signaling.2018

    • Author(s)
      Badawy SMM, Okada T, Kajimoto T, Hirase M, Matovelo SA, Nakamura S, Yoshida D, Ijuin T, Nakamura SI.
    • Journal Title

      Journal of Biological Chemistry

      Volume: in press Issue: 21 Pages: 8208-8216

    • DOI

      10.1074/jbc.ra118.001986

    • NAID

      120006554634

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Essential Role of Sphingosine Kinase 2 in the Regulation of Cargo Contents in the Exosomes from K562 Cells2018

    • Author(s)
      Nesma Nabil IbrahimI Mohamed
    • Journal Title

      Kobe Journal of Medical Sciences

      Volume: 63

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Involvement of Gβγ subunits of Gi protein coupled with S1P receptor on multivesicular endosomes in F-actin formation and cargo sorting into exosomes2018

    • Author(s)
      Kajimoto, T., Mohamed, N.N.I., Badawy, S.M.M., Matovelo, S.A., Hirase, M., Nakamura, S., Yoshida, D., Okada, T., Ijuin, T., Nakamura, S.
    • Journal Title

      Journal of Biological Chemistry

      Volume: 293 Issue: 1 Pages: 245-253

    • DOI

      10.1074/jbc.m117.808733

    • NAID

      120006554633

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Phospholipase D is Dispensable for Epidermal Growth Factor-Induced Chemotaxis2017

    • Author(s)
      Hirai, C., Badawy, S.M.M., Zhang, L., Okada, T., Kajimoto, T., Nakamura, S.
    • Journal Title

      Kobe Journal of Medical Sciences

      Volume: 62

    • NAID

      120006220717

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] DHHC5-mediated palmitoylation of S1P receptor subtype 1 determines G-protein coupling2017

    • Author(s)
      Badawy SMM, Okada T, Kajimoto T, Ijuin T, Nakamura SI.
    • Journal Title

      Scientific Reports

      Volume: 7 Issue: 1 Pages: 16552-16552

    • DOI

      10.1038/s41598-017-16457-4

    • NAID

      120006380402

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] プロテインキナーゼC活性イメージングが明らかにするアポトーシス抵抗性の新たな分子メカニズム2020

    • Author(s)
      梶本 武利
    • Organizer
      第93回日本生化学会大会(シンポジウム)
    • Related Report
      2020 Annual Research Report
    • Invited
  • [Presentation] 非典型プロテインキナーゼCのスフィンゴシン-1リン酸による新規活性化メカニズム2019

    • Author(s)
      Kajimoto, T., Caliman, A.D., Tobias, I.S., Okada, T., Pilo, C.A., Van, A.A., McCammon J.A., Nakamura, S., Newton, A.C.
    • Organizer
      第71回 日本細胞生物学会大会
    • Related Report
      2019 Research-status Report
  • [Presentation] キナーゼ活性イメージングとドッキングシミュレーションの融合によるPKCシグナリング研究の新たな展開2019

    • Author(s)
      梶本 武利
    • Organizer
      第92回 日本生化学会大会
    • Related Report
      2019 Research-status Report
    • Invited
  • [Presentation] 新規プロテインキナーゼC活性化レポーターにより明らかとなるアポトーシス回避の分子メカニズム2019

    • Author(s)
      梶本 武利、キャリマン アリシャ、トバイアス アイリーン、岡田 太郎、パイロ ケイラ、ヴァン アンジェラ、マキャモン アンドリュー、中村 俊一、ニュートン アレキサンドラ
    • Organizer
      第60回 日本組織細胞化学会総会・学術集会
    • Related Report
      2019 Research-status Report
  • [Presentation] New departure in the research of protein kinase C signaling with a combination of live-cell imaging of kinase activity and in silico docking simulation2019

    • Author(s)
      Taketoshi Kajimoto
    • Organizer
      Kobe University-UC San Diego Joint Symposium on Life Science, Computational Science, and Structural Engineering
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Atypical Protein Kinase C-specific Activity Reporter Reveals Novel Activation Mechanism of Atypical Protein Kinase C by Sphingosine 1-phosphate2018

    • Author(s)
      Taketoshi Kajimoto, Alisha D. Caliman, Irene S. Tobias, Taro Okada, J. Andrew McCammon, Shun-ichi Nakamura, Alexandra C. Newton
    • Organizer
      Experimental Biology 2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] エクソソームへの積荷ソーティングにおけるRhoファミリー低分子量Gタンパク質の役割2018

    • Author(s)
      梶本 武利、モハメド ネスマ、バダウィー シャイマー、マトベロ シュビー、平瀬 光寛、中村 俊介、吉田 大亮、岡田 太郎、伊集院 壮、中村 俊一
    • Organizer
      第133回 日本薬理学会近畿部会
    • Related Report
      2018 Research-status Report
  • [Presentation] エクソソームへの積荷ソーティングにおける三量体Gタンパク質βγサブユニットシグナリングの役割2018

    • Author(s)
      梶本 武利、モハメド ネスマ、バダウィー シャイマー、マトベロ シュビー、平瀬 光寛、中村 俊介、吉田 大亮、岡田 太郎、伊集院 壮、中村 俊一
    • Organizer
      第91回 日本生化学会大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 非典型プロテインキナーゼC特異的活性化レポーターにより明らかとなる非典型プロテインキナーゼCの新規活性化メカニズム2018

    • Author(s)
      Taketoshi Kajimoto, Alisha D. Caliman, Irene S. Tobias, Taro Okada, J. Andrew McCammon, Shun-ichi Nakamura, Alexandra C. Newton
    • Organizer
      第41回 日本分子生物学会年会
    • Related Report
      2018 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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