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Efficient identification of low-frequency gene mutations that favor cancer growth

Research Project

Project/Area Number 21K06560
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47030:Pharmaceutical hygiene and biochemistry-related
Research InstitutionOsaka University

Principal Investigator

HINO Nobumasa  大阪大学, 大学院薬学研究科, 講師 (90469916)

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: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2022: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsがんゲノム / タンパク質立体構造 / タンパク質間相互作用 / クロスリンク / 人工アミノ酸 / KEAP1 / 遺伝子変異 / 光クロスリンク
Outline of Research at the Start

がんゲノム変異の90%以上は機能未知の低頻度変異が占めているが,これらの変異とがんとの関連を明らかにする戦略は確立されていない.そこで,がんゲノム低頻度変異がタンパク質間相互作用に及ぼす影響を迅速に評価し,がん生育に有利に働く変異を効率よく同定する.
本研究では,①タンパク質構造上の変異集積領域に着目することでがん変異により異常をきたす相互作用を見出すことができるか?②がん変異による相互作用異常は実際にがん細胞の生育に影響を与えるのか?という2つの問いに答えることにより,低頻度変異とがんとの関連をタンパク質間相互作用異常の観点から明らかにする.

Outline of Final Research Achievements

The relationship between aberrant protein-protein interactions caused by low-frequency cancer mutations and cellular functions was investigated, with the objective of identifying low-frequency mutations that favor cancer growth. It was demonstrated that low-frequency cancer mutations on the surface of KEAP1 protein found in cancer patients attenuate its interaction with Rab8a. However, stable expression of the KEAP1 mutant did not significantly affect cell proliferation and tumor growth. On the other hand, suppression of KEAP1 expression enhanced proliferation of cancer cell lines, and this enhancement was canceled by suppression of Rab8a expression. These results suggest that KEAP1 suppresses Rab8a's ability to promote cell proliferation, but that the weakening of its interaction with Rab8a by the KEAP1 point mutation is not significant enough to affect cell proliferation.

Academic Significance and Societal Importance of the Research Achievements

がんゲノム変異大部分を占める低頻度変異とがんとの関連を明らかにする戦略は確立されておらず、新たな治療標的の探索は進んでいない。我々は、独自手法によりがん低頻度変異により異常をきたすKEAP1-Rab8a間相互作用を同定した。KEAP1点変異による細胞増殖や腫瘍生育への影響はみられなかったものの、KEAP1がRab8aの腫瘍増殖促進を抑制する結果が得られた。本結果は、KEAP1とRab8aが属するそれぞれの蛋白質間相互作用ネットワークのクロストークを示すものであり、KEAP1の発現低下が見られるがんに対して、Rab8aもしくはその下流の因子が新たな治療標的となる可能性を示している。

Report

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

    (11 results)

All 2023 2022 2021 Other

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

  • [Journal Article] Suppressive effect of black tea polyphenol theaflavins in a mouse model of ovalbumin-induced food allergy2023

    • Author(s)
      Ishimoto K, Konishi Y, Otani S, Maeda S, Ago Y, Hino N, Suzuki M, Nakagawa S.
    • Journal Title

      J Nat Med.

      Volume: in press Issue: 3 Pages: 604-609

    • DOI

      10.1007/s11418-023-01686-x

    • Related Report
      2023 Annual Research Report 2022 Research-status Report
    • Peer Reviewed
  • [Journal Article] Upregulation of Robo4 expression by SMAD signaling suppresses vascular permeability and mortality in endotoxemia and COVID-19 models2023

    • Author(s)
      Morita M, Yoneda A, Tokunoh N, Masaki T, Shirakura K, Kinoshita M, Hashimoto R, Shigesada N, Takahashi J, Tachibana M, Tanaka S, Obana M, Hino N, Ikawa M, Tsujikawa K, Ono C, Matsuura Y, Kidoya H, Takakura N, Kubota Y, Doi T, Takayama K, Yoshioka Y, Fujio Y, Okada Y.
    • Journal Title

      Proceedings of the National Academy of Sciences

      Volume: 120 Issue: 3

    • DOI

      10.1073/pnas.2213317120

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Physicochemical and Biochemical Evaluation of Amorphous Solid Dispersion of Naringenin Prepared Using Hot-Melt Extrusion2022

    • Author(s)
      Ishimoto Kenji、Shimada Yukiko、Ohno Akane、Otani Shuichi、Ago Yukio、Maeda Soya、Lin Bangzhong、Nunomura Kazuto、Hino Nobumasa、Suzuki Masayuki、Nakagawa Shinsaku
    • Journal Title

      Frontiers in Nutrition

      Volume: 9 Pages: 850103-850103

    • DOI

      10.3389/fnut.2022.850103

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] HDAC inhibitor, MS-275, increases vascular permeability by suppressing Robo4 expression in endothelial cells2021

    • Author(s)
      Kashio Taito、Shirakura Keisuke、Kinoshita Mayumi、Morita Maaya、Ishiba Ryosuke、Muraoka Kosuke、Kanbara Tomoaki、Tanaka Masato、Funatsu Risa、Hino Nobumasa、Koyama Shohei、Suzuki Ryo、Yoshioka Yasuo、Aoshi Taiki、Doi Takefumi、Okada Yoshiaki
    • Journal Title

      Tissue Barriers

      Volume: 9 Issue: 3 Pages: 1911195-1911195

    • DOI

      10.1080/21688370.2021.1911195

    • URL

      https://localhost/en/publications/7d0bb331-f24e-4484-b7b6-1f5d231dfd91

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Journal Article] Generation of KS-133 as a novel bicyclic peptide with a potent and selective VIPR2 antagonist activity that counteracts cognitive decline in a mouse model of psychiatric disorders2021

    • Author(s)
      Sakamoto K, Chen L, Miyaoka T, Yamada M, Masutani T, Ishimoto K, Hino N, Nakagawa S, Asano S, Ago Y
    • Journal Title

      Frontiers in Pharmacology

      Volume: 12 Pages: 751587-751587

    • DOI

      10.3389/fphar.2021.751587

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Cross-linkable amino acid into proteins for disease pathology research and disease treatment2023

    • Author(s)
      Nobumasa Hino
    • Organizer
      The 8th International Conference on Pharmacy and Advanced Pharmaceutical Sciences and the 14th Annual Conference of the Indonesian Society for Cancer Chemoprevention
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 機能性食品開発を目指した非晶質化β-カロテンの機能性評価2022

    • Author(s)
      河本茉侑, 石本憲司, 石本憲司, 金子瑞季, 樋野展正, 中川晋作
    • Organizer
      第38回日本DDS学会学術集会
    • Related Report
      2022 Research-status Report
  • [Presentation] 新型コロナウイルス変異株に対応する次世代型ACE2-Fc製剤の開発2022

    • Author(s)
      高田 理沙、尾上遥南、鈴木喬介、石本憲司、大竹 和正、坂本 健作、吉岡 靖雄、中川 晋作、樋野 展正
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 細胞内カルシウム流入に伴うDNA脱メチル化関連酵素TET1の活性調節機構2022

    • Author(s)
      石田 莉子、喜多 絢海、原田 和生、土井 啓生、池山 直輝、西浦 崇史、石本憲司、藤尾 慈、中川 晋作、樋野 展正
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Research-status Report
  • [Presentation] 緑茶カテキン代謝物EGC-M5はマウスの認知機能障害と抑うつ様行動を軽減する2022

    • Author(s)
      山口 拓海、片平 海雅、山口 稜太、石本 憲司、樋野 展正、高垣 晶子、大木 渉吾、鈴木 壯幸、中川 晋作、吾郷 由希夫
    • Organizer
      日本薬学会第142年会
    • Related Report
      2021 Research-status Report
  • [Remarks] 大阪大学大学院薬学研究科薬剤学分野ホームページ

    • URL

      https://www.phs.osaka-u.ac.jp/homepage/b011/

    • Related Report
      2023 Annual Research Report 2022 Research-status Report 2021 Research-status Report

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

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