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Elucidation of anticancer drug resistance mechanism of lung cancer through FOXM1

Research Project

Project/Area Number 20K09175
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55040:Respiratory surgery-related
Research InstitutionGunma University

Principal Investigator

Ohtaki Yoichi  群馬大学, 医学部附属病院, 助教 (00625402)

Co-Investigator(Kenkyū-buntansha) 矢島 俊樹  香川大学, 医学部, 教授 (20346852)
横堀 武彦  群馬大学, 未来先端研究機構, 准教授 (60420098)
川端 麗香  群馬大学, 未来先端研究機構, 講師 (90721928)
Project Period (FY) 2020-04-01 – 2023-03-31
Project Status Completed (Fiscal Year 2022)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2022: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2021: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2020: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Keywords原発性肺癌 / FOXM1 / 小細胞肺癌 / HGNEC / Chk1 / ATR / MDR-1 / 抗がん剤耐性
Outline of Research at the Start

本研究は、肺癌細胞が細胞障害性抗がん剤およびチロシンキナーゼ阻害剤(TKI)に耐性化を示すメカニズムの解明について、転写因子FOXM1に着目した検討を行い、その耐性化の克服を目的としたものである。FOXM1はさまざまな抗腫瘍治療において、治療抵抗性に関与することが示されているが、細胞障害性抗がん剤やTKI治療とFOXM1阻害の併用により、抗腫瘍効果の相乗的効果を実証する。本研究の成果により、肺癌治療の臨床において抗癌剤の効果を高め、転移・再発肺癌症例の予後改善効果を目的としている。

Outline of Final Research Achievements

In this study, we focused on the transcription factor FOXM1 to elucidate the mechanism by which lung cancer cells become resistant to cytotoxic anticancer drugs. FOXM1 expression was upregulated in the resistant lines, and FOXM1 suppression using shRNA improved sensitivity to cytotoxic anticancer drugs. Since previous data have shown that FOXM1 expression is higher in small cell lung cancer (SCLC) than in non-small cell lung cancer, we focused on the relationship between SCLC and FOXM1 expression. FOXM1 expression was significantly higher in NeuroD1 type cell lines of high-grade neuroendocrine carcinoma (SCLC+LCNEC). FOXM1 expression was also high in specimens with high neuroendocrine characteristics, such as ASCL1 and NeuroD1.
Thus, FOXM1 is involved in the resistance to cytotoxic anticancer drugs and may be especially effective in tumors with high neuroendocrine characteristics such as ASCL1 and NeuroD1 in HGNECs.

Academic Significance and Societal Importance of the Research Achievements

本研究の結果により、FOXM1は殺細胞性抗がん剤の耐性に寄与しており、FOXM1の阻害によって抗がん剤耐性を改善できる可能性が示された。肺癌の中で、特に新規治療法の開発が遅れている高悪性度神経内分泌癌での治療標的としてのFOXM1の有用性が明らかとなった。本研究は高悪性度神経内分泌癌に対する新規標的治療の基礎的データとして価値をもつものと考えられた。

Report

(4 results)
  • 2022 Annual Research Report   Final Research Report ( PDF )
  • 2021 Research-status Report
  • 2020 Research-status Report
  • Research Products

    (3 results)

All 2022 2021

All Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results)

  • [Journal Article] Molecular and expressional characterization of tumor heterogeneity in pulmonary carcinosarcoma.2022

    • Author(s)
      Ohtaki Y, Kawabata-Iwakawa R, Nobusawa S, Goto Y, Shimizu K, Yajima T, Nakazawa S, Kawatani N, Yoshida Y, Sano T, Shirabe K.
    • Journal Title

      Mol Carcinog.

      Volume: 61 Pages: 924-932

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Complex vs. simple segmentectomy: comparing surgical outcomes in the left upper division.2022

    • Author(s)
      Ohtaki Y, Yajima T, Nagashima T, Nakazawa S, Kawatani N, Obayashi K, Yazawa T, Shimizu K, Shirabe K.
    • Journal Title

      Gen Thorac Cardiovasc Surg.

      Volume: 70 Pages: 962-970

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Comprehensive expressional analysis of chemosensitivity‐related markers in large cell neuroendocrine carcinoma of the lung2021

    • Author(s)
      Ohtaki Yoichi、Kaira Kyoichi、Yajima Toshiki、Erkhem‐Ochir Bilguun、Kawashima Osamu、Kamiyoshihara Mitsuhiro、Igai Hitoshi、Onozato Ryoichi、Ibe Takashi、Kosaka Takayuki、Nakazawa Seshiru、Nagashima Toshiteru、Oyama Tetsunari、Shirabe Ken
    • Journal Title

      Thoracic Cancer

      Volume: 12 Issue: 20 Pages: 2666-2679

    • DOI

      10.1111/1759-7714.14102

    • Related Report
      2021 Research-status Report
    • Peer Reviewed / Open Access

URL: 

Published: 2020-04-28   Modified: 2024-01-30  

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