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Genetic analysis of tumor progression by inter-organ communication

Research Project

Project/Area Number 21K07120
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 50010:Tumor biology-related
Research InstitutionKyoto University

Principal Investigator

Kiichiro Taniguchi  京都大学, 生命科学研究科, 特定講師 (20554174)

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: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2022: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2021: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywordsがん遺伝子Ras / 化学受容器 / 臓器連関 / ショウジョウバエ / Ras / がん / 組織連関
Outline of Research at the Start

ショウジョウバエ化学受容器群 (Ir・Gr・Or) は感覚神経などで機能する嗅覚 (フェロモン・危険物質など)・味覚 (甘味・苦味など) 受容体であり、神経伝達等を介して個体レベルでの行動・代謝応答に重要な役割を果たすと考えられている 。一方で、Ir・Gr・Orが機能するニューロンやその機能は化学受容器ごとに独立である。そこで本研究では、個々のニューロンが、全身性応答をつかさどる共通の細胞 (グリア細胞等) に収束すると予測し、RasV12腫瘍悪性化における臓器連関の起点となる神経ネットワークおよび全身性シグナル伝達の実態解明を目指す。

Outline of Final Research Achievements

We found that the haploid mutants of chemoreceptor genes, such as odorant receptor, gustatory receptor and ionotropic receptor drives the overgrowth of RasV12 clone in Drosophila. However, the mechanism which links the haploid mutation of chemoreceptor and the overgrowth of RasV12 clone has been unclear. Here, we demonstrated that the oncogenic overgrowth of RasV12 clones occurring in haploid mutants of chemoreceptor genes are responsible for the neuronal loss of chemoreceptor genes. The loss of chemoreceptors leaded to the defects in the resistance to the high-sugar diet, implying that the loss of chemoreceptors caused the defects in a systemic sugar metabolism. Importantly, the glycolysis pathway is required for the overgrowth of RasV12 clones generated in haploid mutants of chemoreceptor genes. We also found that the overgrowth of RasV12 clone was regulated through the suppression of the Hippo signaling pathway.

Academic Significance and Societal Importance of the Research Achievements

発がんリスクの上昇・低下には全身性の多臓器連関が関与している可能性という事が、多くの統計データによって示唆されており、運動による発がんリスク低下や肥満による発がんリスク上昇などが代表例として挙げられる。一方で、多臓器連関によるがん制御の分子メカニズムについては未解明な点が多く、人為的介入によるがん予防・治療への課題は多い。本研究では、嗅覚・味覚のセンサーとして働く化学受容器の喪失が「ニューロン―がん原発巣」の臓器連関を介してRas腫瘍の悪性化を引き起こすという、新たながん原性の臓器連関メカニズムを明らかにした。本研究成果は、がんリスクの遺伝的指標やがん治療・予防の新規標的として期待される。

Report

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

    (13 results)

All 2024 2023 2022 2021 Other

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 1 results) Remarks (3 results)

  • [Journal Article] <i>In vivo</i> evidence for homeostatic regulation of ribosomal protein levels in <i>Drosophila</i>2024

    • Author(s)
      Kitamura Daiki, Taniguchi Kiichiro, Nakamura Mai, Igaki Tatsushi
    • Journal Title

      Cell Structure and Function

      Volume: 49 Issue: 1 Pages: 11-20

    • DOI

      10.1247/csf.23088

    • ISSN
      0386-7196, 1347-3700
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The <i>Drosophila</i> AWP1 ortholog Doctor No regulates JAK/STAT signaling for left?right asymmetry in the gut by promoting receptor endocytosis2023

    • Author(s)
      Lai Yi-Ting、Sasamura Takeshi、Kuroda Junpei、Maeda Reo、Nakamura Mitsutoshi、Hatori Ryo、Ishibashi Tomoki、Taniguchi Kiichiro、Ooike Masashi、Taguchi Tomohiro、Nakazawa Naotaka、Hozumi Shunya、Okumura Takashi、Aigaki Toshiro、Inaki Mikiko、Matsuno Kenji
    • Journal Title

      Development

      Volume: 150 Issue: 6

    • DOI

      10.1242/dev.201224

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Sas-Ptp10D shapes germ-line stem cell niche by facilitating JNK-mediated apoptosis2023

    • Author(s)
      Kiichiro Taniguchi, Tatsushi Igaki
    • Journal Title

      PLoS genetics

      Volume: 19 Issue: 3 Pages: e1010684-e1010684

    • DOI

      10.1371/journal.pgen.1010684

    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Cell competition effector Sas-Ptp10D shapes germ-line stem cell niche2023

    • Author(s)
      Kiichiro Taniguchi, Tatsushi Igaki
    • Organizer
      The 6th Asia Pacific Drosophila Research Conference
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 統合的ストレス応答は腫瘍内不均一性を介したがん進展を駆動する2023

    • Author(s)
      谷口喜一郎, 福本果歩, 小林朋絵, 松山誠, 大澤志津江, 井垣達吏
    • Organizer
      第75回日本細胞生物学会大会
    • Related Report
      2023 Annual Research Report
  • [Presentation] 統合的ストレス応答は細胞間相互作用を介した腫瘍悪性化を駆動する2022

    • Author(s)
      谷口喜一郎, 福本果歩, 榎本将人, 中村麻衣, 大澤志津江, 井垣達吏
    • Organizer
      第74回日本細胞生物学会大会
    • Related Report
      2022 Research-status Report
  • [Presentation] Integrated stress response drives non-autonomous progression of Ras-activated tumors2022

    • Author(s)
      Kiichiro Taniguchi, Kaho Fukumoto, Tomoe Kobayashi, Makoto Matsuyama, Shizue Ohsawa, Tatsushi Igaki
    • Organizer
      第15回日本ショウジョウバエ研究会
    • Related Report
      2022 Research-status Report
  • [Presentation] Cell competition effector Sas-Ptp10D facilitates apoptosis for the proper shaping of germ-line stem cell niche2021

    • Author(s)
      Kiichiro Taniguchi, Tatsushi Igaki
    • Organizer
      第54回日本発生生物学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] 統合的ストレス応答はRas誘導性腫瘍に細胞非自律的な増殖促進作用を惹起する2021

    • Author(s)
      谷口喜一郎, 福本果歩, 榎本将人, 中村麻衣, 大澤志津江, 井垣達吏
    • Organizer
      第73回日本細胞生物学会大会
    • Related Report
      2021 Research-status Report
  • [Presentation] Integrated stress response creates the tumor microenvironment in Ras-activated tumors2021

    • Author(s)
      Kiichiro Taniguchi, Masato Enomoto, Kaho Fukumoto, Mai Nakamura Shu Kondo, Kuniaki Saito, Tatsushi Igaki
    • Organizer
      14th Japan Drosophila Research Conference
    • Related Report
      2021 Research-status Report
  • [Remarks] 井垣研究室

    • URL

      https://igakilab.lif.kyoto-u.ac.jp/

    • Related Report
      2023 Annual Research Report
  • [Remarks] 井垣研究室 システム機能学分野 京都大学

    • URL

      https://igakilab.lif.kyoto-u.ac.jp/

    • Related Report
      2022 Research-status Report
  • [Remarks] 井垣研究室 システム機能学分野 京都大学

    • URL

      https://www.lif.kyoto-u.ac.jp/genetics/

    • Related Report
      2021 Research-status Report

URL: 

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

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