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Biological roles of dysregulated Hippo pathway on cancer stem like function during the tumor progression of gastroenterological cancers

Research Project

Project/Area Number 19K09177
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 55020:Digestive surgery-related
Research InstitutionKumamoto University

Principal Investigator

Hayashi Hiromitsu  熊本大学, 病院, 助教 (80625773)

Co-Investigator(Kenkyū-buntansha) 山下 洋市  熊本大学, 大学院生命科学研究部(医), 准教授 (00404070)
石本 崇胤  熊本大学, 病院, 特任准教授 (00594889)
中川 茂樹  熊本大学, 病院, 特任助教 (10594872)
今井 克憲  熊本大学, 大学院生命科学研究部(医), 助教 (60555746)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2021: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2020: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywords消化器癌 / Hippo pathway / 癌幹細胞 / YAP / TAZ / Yap / Taz / 抗がん剤抵抗性 / 癌
Outline of Research at the Start

YAP/TAZの発現変化が癌幹細胞様性質獲得に寄与し、さらに免疫による癌細胞死から回避している、という仮説に基づいて、その他の消化器癌において同様の研究を進めてきた。また、PDL-1, PDL-2による癌免疫逃避機構とYAP/TAZの発現変化が関与する基礎的実験結果を得ている。本研究では、消化器癌における腫瘍抑制シグナルHippo pathway の構成成分YAP/TAZによる癌幹細胞性の制御機構および免疫回避機構について分子生物学的に紐解き、臨床的特性と対比することにより癌幹細胞および癌免疫をターゲットにした新しい癌治療法の確立を目指す。

Outline of Final Research Achievements

ATP binding cassette subfamily B member 1 (ABCB1) is an ATP-dependent drug efflux pump for xenobiotic compounds with broad substrate specificity. It is responsible for decreased drug accumulation in multidrug-resistant cells and often mediates the development of resistance to anticancer drugs. Thus, ABCB1 plays an important role in the chemoresistance of cancer cells, and is known as a cancer stem cell transcription factor. Hyperglycemia induced ABCB1 expression, and it was also upregulated by YAP/TAZ overexpression in pancreatic cancer cells. Conversely, knockdown of YAP or TAZ attenuated ABCB1 expression compared to controls. Indeed, pancreatic cancer cells cultured with hyperglycemia displayed accelerated chemoresistance response to gemcitabine and oxaliplatin. YAP/TAZ inhibitor successfully overcome the chemoresistance. These findings indicate that hyperglycemia promote chemoresistance by upregulating ABCB1 expression via YAP/TAZ overexpression in pancreatic cancer cells.

Academic Significance and Societal Importance of the Research Achievements

ヒト固形癌では腫瘍抑制シグナル伝達系Hippo pathwayの破綻による転写因子YAP/TAZの発現上昇が高頻度に認められており、近年発がんおよび癌進展におけるHippo pathwayの破綻が注目される。Hippo pathwayの破綻はYAPとTAZの発現上昇を引き起こすが、YAP/TAZの発現上昇はABCB1といった癌幹細胞マーカーの発現を増加させ抗がん剤抵抗性に寄与することを明らかにした。

Report

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

    (6 results)

All 2022 2021 2020 2019

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

  • [Journal Article] Statin as a therapeutic agent in gastroenterological cancer2022

    • Author(s)
      Uemura Norio、Hayashi Hiromitsu、Baba Hideo
    • Journal Title

      World Journal of Gastrointestinal Oncology

      Volume: 14 Issue: 1 Pages: 110-123

    • DOI

      10.4251/wjgo.v14.i1.110

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Extracellular Vesicles from Cancer-Associated Fibroblasts Containing Annexin A6 Induces FAK-YAP Activation by Stabilizing β1 Integrin, Enhancing Drug Resistance2020

    • Author(s)
      Uchihara T, Miyake K, Yonemura A, Komohara Y, Itoyama R, Koiwa M, Yasuda T, Arima K, Harada K, Eto K, Hayashi H, Iwatsuki M, Iwagami S, Baba Y, Yoshida N, Yashiro M, Masuda M, Ajani Jaffer A, Tan Patrick, Baba H, Ishimoto T
    • Journal Title

      Cancer Research

      Volume: 80 Issue: 16 Pages: 3222-3235

    • DOI

      10.1158/0008-5472.can-19-3803

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] CD44 expression enhances chemoresistance and implies occult micrometastases after conversion hepatectomy for initially unresectable colorectal liver metastases2020

    • Author(s)
      Hiromitsu Hayashi, Yuji Miyamoto, Takaaki Higashi, Yukiharu Hiyoshi, Takanobu Yamao, Norio Uemura, Kazuki Matsumura, Katsunori Imai, Yo-ichi Yamashita, Hideo Baba
    • Journal Title

      Am J Transl Res

      Volume: 12(9) Pages: 5955-5966

    • Related Report
      2020 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Clinical impact of statin intake and its biological mechanism via YAP/TAZ against hepatobiliary pancreatic cancers2021

    • Author(s)
      Hiromitsu Hayashi, Norio Uemura, Kazuki Matsumura, Zhao Liu, Hirohisa Satou, Yuta Shiraishi, Yuki Kitano, Katsunori Imai, Yo-ichi Yamashita, Hideo Baba
    • Organizer
      日本肝胆膵外科学会
    • Related Report
      2021 Annual Research Report
  • [Presentation] 膵癌における スタチンのHippo-pathwayを介した抗腫瘍効果2019

    • Author(s)
      上村紀雄、林洋光、東孝暁、伊 東山瑠美、中尾陽佑、遊佐俊彦、今井克憲、山下洋市、近本亮、馬場秀夫
    • Organizer
      第30回日本消化器癌発生学会総会
    • Related Report
      2019 Research-status Report
  • [Presentation] 膵癌に対するStatin投 与によるYAP/TAZを介した抗腫瘍効果に関する検討2019

    • Author(s)
      上村紀雄、林洋光、松村和季、 北村文優、伊東山 瑠美、中尾陽佑、山尾宣暢、東孝暁、山村 謙介、今井克憲、近本 亮、山下洋市、馬場秀夫
    • Organizer
      第53回制癌剤適応研究会
    • Related Report
      2019 Research-status Report

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

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