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Molecular Mechanism of Tumor Supression by RalGAP and Biguanides

Research Project

Project/Area Number 19K07342
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 48040:Medical biochemistry-related
Research InstitutionTohoku University

Principal Investigator

Shirakawa Ryutaro  東北大学, 加齢医学研究所, 助教 (50581039)

Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2021: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2020: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2019: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
KeywordsRal / RalGAP / Ras / 膵臓がん / PDAC / 転移 / biguanide / metformin / pancreatic cancer / phenformin
Outline of Research at the Start

Rasファミリーの低分子量GTP結合蛋白質Ralは、細胞の増殖、成長、遊走等、多様な機能を担っている。Ralの不活性化因子Ral GTPase-activating protein (RalGAP)は、がんの浸潤・転移の抑制に重要である。一方、抗糖尿病薬として広く用いられているビグアナイド薬は血糖降下作用に加え、抗腫瘍作用を持つことが疫学的に明らかにされつつある。本研究では、RalGAPとビグアナイドによる腫瘍抑制機構の解明を目的とする。

Outline of Final Research Achievements

Ral is a low molecular weight GTP-binding protein belonging to the Ras family and regulates diverse cellular processes including cell proliferation, membrane traffic, and actin cytoskeleton reorganization. Aberrant activation of Ral is known to promote malignant transformation of cancer. In this study, we found that the constitutive activation of Ral promoted the invasion and metastasis of pancreatic cancer cells. In addition, gene expression analysis identified a cytokine whose expression and secretion increased with Ral activation. These findings reveal the molecular mechanisms downstream of Ral that play a role in invasion and metastasis of pancreatic cancer cells.

Academic Significance and Societal Importance of the Research Achievements

これまでの多くの知見は、Ralの異常な活性化が、がん化、がんの浸潤・転移に重要であることを示している。特に膵臓がんにおいてはRalの活性化が顕著であることが知られる。しかし、がんの悪性化を制御するRal下流の分子メカニズムについてはこれまで不明であった。本研究において膵臓がんの浸潤・転移におけるRalの役割を明らかにした。現在、Ral経路を標的とする抗がん剤の開発が進められており、本成果は膵臓がんに対する新たな治療薬の開発につながりうるものである。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Research-status Report
  • 2019 Research-status Report
  • Research Products

    (13 results)

All 2021 2020 2019 Other

All Journal Article (9 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 9 results,  Open Access: 4 results) Presentation (3 results) Remarks (1 results)

  • [Journal Article] Ral GTPase-activating protein regulates the malignancy of pancreatic ductal adenocarcinoma2021

    • Author(s)
      Yoshimachi Shingo、Shirakawa Ryutaro、Cao Mingxin、Trinh Duc Anh、Gao Pan、Sakata Natsumi、Miyazaki Kento、Goto Kota、Miura Takayuki、Ariake Kyohei、Maeda Shimpei、Masuda Kunihiro、Ishida Masaharu、Ohtsuka Hideo、Unno Michiaki、Horiuchi Hisanori
    • Journal Title

      Cancer Science

      Volume: 112 Issue: 8 Pages: 3064-3073

    • DOI

      10.1111/cas.14970

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Double prenylation of SNARE protein Ykt6 is required for lysosomal hydrolase trafficking2020

    • Author(s)
      Sakata Natsumi、Shirakawa Ryutaro、Goto Kota、Trinh Duc Anh、Horiuchi Hisanori
    • Journal Title

      The Journal of Biochemistry

      Volume: 169 Issue: 3 Pages: 363-370

    • DOI

      10.1093/jb/mvaa111

    • Related Report
      2020 Research-status Report
    • Peer Reviewed
  • [Journal Article] A SNARE geranylgeranyltransferase essential for the organization of the Golgi apparatus2020

    • Author(s)
      Shirakawa Ryutaro、Goto‐Ito Sakurako、Goto Kota、Wakayama Shonosuke、Kubo Haremaru、Sakata Natsumi、Trinh Duc Anh、Yamagata Atsushi、Sato Yusuke、Masumoto Hiroshi、Cheng Jinglei、Fujimoto Toyoshi、Fukai Shuya、Horiuchi Hisanori
    • Journal Title

      The EMBO Journal

      Volume: 39 Issue: 8

    • DOI

      10.15252/embj.2019104120

    • Related Report
      2020 Research-status Report 2019 Research-status Report
    • Peer Reviewed
  • [Journal Article] APOBEC3B reporter myeloma cell lines identify DNA damage response pathways leading to APOBEC3B expression2020

    • Author(s)
      Yamazaki Hiroyuki、Shirakawa Kotaro、Matsumoto Tadahiko、Kazuma Yasuhiro、Matsui Hiroyuki、Horisawa Yoshihito、Stanford Emani、Sarca Anamaria Daniela、Shirakawa Ryutaro、Shindo Keisuke、Takaori-Kondo Akifumi
    • Journal Title

      PLOS ONE

      Volume: 15 Issue: 1 Pages: e0223463-e0223463

    • DOI

      10.1371/journal.pone.0223463

    • NAID

      120006786934

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Down-regulation of RalGTPase-Activating Protein Promotes Colitis-Associated Cancer via NLRP3 Inflammasome Activation2020

    • Author(s)
      Iida Tomoya、Hirayama Daisuke、Minami Naoki、Matsuura Minoru、Wagatsuma Kohei、Kawakami Kentaro、Nagaishi Kanna、Nojima Masanori、Ikeuchi Hiroki、Hirota Seiichi、Shirakawa Ryutaro、Horiuchi Hisanori、Nakase Hiroshi
    • Journal Title

      Cellular and Molecular Gastroenterology and Hepatology

      Volume: 9 Issue: 2 Pages: 277-293

    • DOI

      10.1016/j.jcmgh.2019.10.003

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Inhibitor of Growth 4 (ING4) is a positive regulator of rRNA synthesis2019

    • Author(s)
      Trinh Duc-Anh、Shirakawa Ryutaro、Kimura Tomohiro、Sakata Natsumi、Goto Kota、Horiuchi Hisanori
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1

    • DOI

      10.1038/s41598-019-53767-1

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Ral GTPase Activation by Downregulation of RalGAP Enhances Oral Squamous Cell Carcinoma Progression2019

    • Author(s)
      Gao P.、Liu S.、Yoshida R.、Shi C.Y.、Yoshimachi S.、Sakata N.、Goto K.、Kimura T.、Shirakawa R.、Nakayama H.、Sakata J.、Kawashiri S.、Kato K.、Wang X.Y.、Horiuchi H.
    • Journal Title

      Journal of Dental Research

      Volume: 98 Issue: 9 Pages: 1011-1019

    • DOI

      10.1177/0022034519860828

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Endogenous APOBEC3B Overexpression Constitutively Generates DNA Substitutions and Deletions in Myeloma Cells2019

    • Author(s)
      Yamazaki Hiroyuki、Shirakawa Kotaro、Matsumoto Tadahiko、Hirabayashi Shigeki、Murakawa Yasuhiro、Kobayashi Masayuki、Sarca Anamaria Daniela、Kazuma Yasuhiro、Matsui Hiroyuki、Maruyama Wataru、Fukuda Hirofumi、Shirakawa Ryutaro、Shindo Keisuke、Ri Masaki、Iida Shinsuke、Takaori-Kondo Akifumi
    • Journal Title

      Scientific Reports

      Volume: 9 Issue: 1 Pages: 7122-7122

    • DOI

      10.1038/s41598-019-43575-y

    • NAID

      120006629181

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Downregulation of RalGTPase-activating protein promotes invasion of prostatic epithelial cells and progression from intraepithelial neoplasia to cancer during prostate carcinogenesis2019

    • Author(s)
      Uegaki Masayuki、Kita Yuki、Shirakawa Ryutaro、Teramoto Yuki、Kamiyama Yuki、Saito Ryoichi、Yoshikawa Takeshi、Sakamoto Hiromasa、Goto Takayuki、Akamatsu Shusuke、Yamasaki Toshinari、Inoue Takahiro、Suzuki Akira、Horiuchi Hisanori、Ogawa Osamu、Kobayashi Takashi
    • Journal Title

      Carcinogenesis

      Volume: 40 Pages: 1535-1544

    • DOI

      10.1093/carcin/bgz082

    • Related Report
      2019 Research-status Report
    • Peer Reviewed
  • [Presentation] ダブルプレニルYkt6はリソソーム水解酵素の輸送を制御する2021

    • Author(s)
      坂田菜摘, 白川龍太郎, 後藤孝太, Duc Anh Trinh, 堀内久徳
    • Organizer
      日本生化学会東北支部会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 新規ゲラニルゲラニル転移酵素GGT3によるYkt6のダブルプレニル化はゴルジ体の構造 と機能の維持に必須である2020

    • Author(s)
      白川龍太郎、後藤-伊藤桜子、後藤孝太、深井周也、堀内久徳
    • Organizer
      日本細胞生物学会大会
    • Related Report
      2020 Research-status Report
  • [Presentation] 新規プレニル転移酵素GGT3の分子機能解析2020

    • Author(s)
      白川龍太郎
    • Organizer
      日本生化学会東北支部会例会
    • Related Report
      2020 Research-status Report
  • [Remarks] 東北大学加齢医学研究所基礎加齢研究分野

    • URL

      http://www2.idac.tohoku.ac.jp/dep/mcb/

    • Related Report
      2021 Annual Research Report 2020 Research-status Report 2019 Research-status Report

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Published: 2019-04-18   Modified: 2023-01-30  

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