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Investigation of radio-resistant mechanism of well differentiated adenocarcinoma using a primary culture system, CTOS

Research Project

Project/Area Number 16K10414
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Radiation science
Research InstitutionOsaka International Cancer Institute

Principal Investigator

Endo Hiroko  地方独立行政法人大阪府立病院機構大阪国際がんセンター(研究所), その他部局等, 主任研究員 (20359300)

Co-Investigator(Kenkyū-buntansha) 井上 正宏  地方独立行政法人大阪府立病院機構大阪国際がんセンター(研究所), その他部局等, 特別研究員 (10342990)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2018: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2017: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Keywords放射線感受性 / 分化型腺癌 / 三次元培養系 / 大腸癌 / 放射線腫瘍学
Outline of Final Research Achievements

We examined the effect of stem/differentiation status on radio-sensitivity of well-differentiated colorectal cancer using three-dimensional culture system, CTOS (Cancer Tissue-Originated Spheroid). We found that the stem/differentiation status of colorectal cancer CTOS was highly fluctuated by the difference in culture conditions or the stimulation of mechanical disruption. CTOSs with high Wnt signaling were resistant to X-ray irradiation. Pre-treatment of CTOS with HDAC inhibitors resulted in the downregulation of stemness genes and enhanced radio-sensitivity. These results indicated that HDAC inhibitors could be a radio-sensitizer for colorectal cancer though attenuating the stemness of well differentiated adenocarcinoma.

Academic Significance and Societal Importance of the Research Achievements

正常組織における分化/幹細胞の階層性が放射線感受性に与える影響は、トランスジェニックマウスを用いた研究で多く報告されている。しかし、大腸がんをはじめとする分化型腺癌の幹細胞性と放射線感受性に関しては、あまり研究されてこなかった。その理由のひとつとして、分化型腺癌の特徴を保持した実験系が存在しなかったことが挙げられる。今回、我々は三次元培養系CTOS法を用いて、大腸癌細胞の分化/幹細胞性が大きく揺らぐこと、その中でもWntシグナルが高い状態にある癌細胞が放射線耐性を示すことを見出した。CTOS法は、分化型腺癌を対象とした放射線増感剤の研究プラットフォームとなりうる。

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (14 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (7 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 7 results,  Open Access: 5 results,  Acknowledgement Compliant: 1 results) Presentation (4 results) (of which Invited: 1 results) Remarks (1 results)

  • [Int'l Joint Research] The University of Texas at Dallas/St Mark's School of Texas/The University of Texas Southwestern(米国)

    • Related Report
      2017 Research-status Report
  • [Int'l Joint Research] Kyungpook National University(韓国)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Dormancy in cancer2019

    • Author(s)
      Endo Hiroko、Inoue Masahiro
    • Journal Title

      Cancer Science

      Volume: 110 Issue: 2 Pages: 474-480

    • DOI

      10.1111/cas.13917

    • NAID

      120006557516

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] High-throughput screening in colorectal cancer tissue-originated spheroids2018

    • Author(s)
      Kondo Jumpei、Ekawa Tomoya、Endo Hiroko、Yamazaki Kanami、Tanaka Norio、Kukita Yoji、Okuyama Hiroaki、Okami Jiro、Imamura Fumio、Ohue Masayuki、Kato Kikuya、Nomura Taisei、Kohara Arihiro、Mori Seiichi、Dan Shingo、Inoue Masahiro
    • Journal Title

      Cancer Science

      Volume: 110 Issue: 1 Pages: 345-355

    • DOI

      10.1111/cas.13843

    • NAID

      120006547404

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Promotion of malignant phenotype after disruption of the three-dimensional structure of cultured spheroids from colorectal cancer.2018

    • Author(s)
      Piulats JM, Kondo J, Endo H, Ono H, Hagihara T, Okuyama H, Nishizawa Y, Tomita Y, Ohue M, Okita K, Oyama H, Bono H, Masuko T, Inoue M.
    • Journal Title

      Oncotarget

      Volume: 9 Issue: 22 Pages: 15968-15983

    • DOI

      10.18632/oncotarget.24641

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spheroid Cultures of Primary Urothelial Cancer Cells: Cancer Tissue-Originated Spheroid (CTOS) Method.2018

    • Author(s)
      Yoshida T, Okuyama H, Endo H, Inoue M.
    • Journal Title

      Methods Mol Biol.

      Volume: 1655 Pages: 145-153

    • DOI

      10.1007/978-1-4939-7234-0_12

    • ISBN
      9781493972333, 9781493972340
    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] The distinct metabolic phenotype of lung squamous cell carcinoma defines selective vulnerability to glycolytic inhibition.2017

    • Author(s)
      Goodwin J, Neugent ML, Lee SY, Choe JH, Choi H, Jenkins DMR, Ruthenborg RJ, Robinson MW, Jeong JY, Wake M, Abe H, Takeda N, Endo H, Inoue M, Xuan Z, Yoo H, Chen M, Ahn JM, Minna JD, Helke KL, Singh PK, Shackelford DB, Kim JW.
    • Journal Title

      Nature Communications

      Volume: 8 Issue: 1 Pages: 15503-15503

    • DOI

      10.1038/ncomms15503

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] In vivo and ex vivo cetuximab sensitivity assay using three-dimensional primary culture system to stratify KRAS mutant colorectal cancer2017

    • Author(s)
      Tashiro T, Okuyama H, Endo H, Kawada K, Ashida Y, Ohue M, Sakai Y, Inoue M.
    • Journal Title

      PLoS One

      Volume: 12 Issue: 3 Pages: e0174151-e0174151

    • DOI

      10.1371/journal.pone.0174151

    • NAID

      120006539603

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] The induction of MIG6 under hypoxic conditions is critical for dormancy in primary cultured lung cancer cells with activating EGFR mutations2016

    • Author(s)
      Endo H, Okami J, Okuyama H, Nishizawa Y, Imamura F, Inoue M
    • Journal Title

      Oncogene

      Volume: epub ahead of print Issue: 20 Pages: 2824-2834

    • DOI

      10.1038/onc.2016.431

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] HDAC inhibitors sensitize well-differentiated colorectal cancer spheroid to X-ray irradiation2018

    • Author(s)
      Hiroko Endo, Jumpei Kondo, and Masahiro Inoue
    • Organizer
      第77回日本癌学会学術総会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Induction of dormancy as a survival strategy of cancer cells2018

    • Author(s)
      Hiroko Endo and Masahiro Inoue
    • Organizer
      第41回日本分子生物学会年会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] Radiation sensitivity assay for well-differentiated adenocarcinoma using colorectal cancer spheroid2017

    • Author(s)
      Endo H, Kondo J, Inoue M
    • Organizer
      第75回日本癌学会学術総会
    • Related Report
      2017 Research-status Report
  • [Presentation] A shuttle system between patient-derived xenograft and ex vivo culture for efficient drug screening.2016

    • Author(s)
      Hiroko Endo, Hiroaki Okuyama, Satoshi Kubota, Yoji Kukita, and Masahiro Inoue
    • Organizer
      第75回日本癌学会学術総会
    • Place of Presentation
      パシフィコ横浜
    • Year and Date
      2016-10-06
    • Related Report
      2016 Research-status Report
  • [Remarks] 大阪国際がんセンター 研究所 生化学部門

    • URL

      http://www.mc.pref.osaka.jp/laboratory/department/seikagaku/

    • Related Report
      2017 Research-status Report 2016 Research-status Report

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Published: 2016-04-21   Modified: 2022-02-22  

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