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The mechanism by which hypoxia promotes tumor progression in lung cancer

Research Project

Project/Area Number 18K16415
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 55040:Respiratory surgery-related
Research InstitutionShiga University of Medical Science

Principal Investigator

Kataoka Yoko  滋賀医科大学, 医学部, 非常勤講師 (00746919)

Project Period (FY) 2018-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords低酸素 / 肺がん / Galectin-3 / RhoA / 非小細胞肺がん
Outline of Final Research Achievements

In this study, to clarify the mechanism by lung cancer invasion in hypoxic condition, we focused on galectin-3 in hypoxia in non-small cell lung cancer (NSCLC). We examined the function and prognostic significance of hypoxia-inducible galectin-3 in NSCLC. We revealed that hypoxia-inducible galectin-3 enhances tumor cell motility via RhoA activation in NSCLC. Galectin-3 expression in tumor cells is significantly correlated with recurrence after surgery and an independent predictive marker in NSCLC. These findings suggest that hypoxia-inducible galectin-3 could contribute to tumor progression and serve as a prognostic factor for tumor recurrence in NSCLC.

Academic Significance and Societal Importance of the Research Achievements

非小細胞肺がんにおいて、低酸素応答により腫瘍細胞のGalectin-3の発現が増強することを見出した。低酸素により誘導されたGalectin-3は、RhoAを活性化し、腫瘍細胞の遊走に関わっていることから、肺がんの浸潤において重要な役割を果たしていると考えられた。臨床的意義としては、非小細胞肺がん組織において、低酸素領域の腫瘍細胞で、Galectin-3の発現がみられ、独立した術後再発予測因子であることが明らかとなった。以上より、非小細胞肺がん細胞におけるGalectin-3の発現は、浸潤・転移の誘導に関与し、手術後の再発を予測する有用なバイオマーカーとなる可能性が示唆された。

Report

(3 results)
  • 2019 Annual Research Report   Final Research Report ( PDF )
  • 2018 Research-status Report
  • Research Products

    (4 results)

All 2019 2018

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

  • [Journal Article] Hypoxia-induced galectin-3 enhances RhoA function to activate the motility of tumor cells in non-small cell lung cancer2019

    • Author(s)
      Kataoka Y, Ohshio Y, Teramoto K, Igarashi T, Asai T, Hanaoka J.
    • Journal Title

      Oncology Reports

      Volume: 41 Pages: 853-862

    • DOI

      10.3892/or.2018.6915

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Predictive importance of galectin-3 for recurrence of non-small cell lung cancer2019

    • Author(s)
      Kataoka Y, Igarashi T, Ohshio Y, Fujita T, Hanaoka J.
    • Journal Title

      General Thoracic and Cardiovascular Surgery

      Volume: 印刷中 Issue: 8 Pages: 704-711

    • DOI

      10.1007/s11748-019-01074-x

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] 1.肺がんの低酸素応答における浸潤のメカニズム2018

    • Author(s)
      片岡 瑛子、大塩 恭彦、林 一喜、岡本 圭伍、賀来 良輔、五十嵐 知之、寺本 晃治、花岡 淳
    • Organizer
      第35回日本呼吸器外科学会総会
    • Related Report
      2018 Research-status Report
  • [Presentation] 2.OVEREXPRESSION OF GALECTIN-3 IN CANCER-ASSOCIATED FIBROBLASTS SERVES AS A PROGNOSTIC FACTOR IN INVASIVE PULMONARY ADENOCARCINOMA2018

    • Author(s)
      Kataoka Y, Ohshio Y, Igarashi T, Teramoto K, Hanaoka J.
    • Organizer
      26th Meeting of the European Society of Thoracic Surgeons
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research

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Published: 2018-04-23   Modified: 2021-02-19  

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