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2016 Fiscal Year Annual Research Report

Cancer stem cell targeting by fatty acid signals

Research Project

Project/Area Number 26460424
Research InstitutionNara Medical University

Principal Investigator

大森 斉  奈良県立医科大学, 医学部, 研究員 (80213875)

Co-Investigator(Kenkyū-buntansha) 國安 弘基  奈良県立医科大学, 医学部, 教授 (00253055)
Project Period (FY) 2014-04-01 – 2017-03-31
Keywordsトランス脂肪酸 / エライジン酸 / マイクロRNA / がん幹細胞
Outline of Annual Research Achievements

脂肪酸によるマイクロRNA発現の変化を検討し癌幹細胞への影響を検討した。CT26大腸癌細胞をリノール酸(LA)またはエライジン酸(EA)で処理しアレイにより検討し、両脂肪酸で発現亢進を示したもののうちmiR-494について検討を行った。両脂肪酸とmiR-494 mimicまたは inhibitorを処理し、sphere assayにより幹細胞性を検討した。Sphere densityはLA, EAにより増加したが、 mimic処理により強い増加が認められた。一方、inhibitor処理によりsphere densityは低下し、LA, EAによるdensityの増加も抑制された。Sphere assayによる癌幹細胞マーカーの発現を検討すると、CD133はLAとmimicで増加し、nucleostemin(NS)はEAとmimicで増加した。一方、inhibitor処理により、両脂肪酸でCD133・NSの発現は消失した。さらに、miR-494標的遺伝子候補で癌幹細胞分化に関係するPPARγ coactivator 1A、PTEN、activin A receptor 1C、FGFR2についてmRNA発現を検討するとFGFR2以外では、EA, LA, mimicでは発現低下が、inhibitorでは発現亢進が認められた。このように、miR-494は脂肪酸により発現が促進され、分化促進因子を抑制し癌幹細胞性の維持に関与することが示唆された。

  • Research Products

    (9 results)

All 2017 2016

All Journal Article (5 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 5 results,  Open Access: 5 results,  Acknowledgement Compliant: 3 results) Presentation (2 results) (of which Int'l Joint Research: 1 results) Book (2 results)

  • [Journal Article] Pro-metastatic intracellular signaling of elaidic acid, a trans fatty acid.2017

    • Author(s)
      Fujii K, Luo Y, Nishiguchi Y, Fujiwara R, Kishi S, He S, Yang S, Sasaki T, Ohmori H, Kuniyasu H
    • Journal Title

      Int J Oncol

      Volume: 50 Pages: 85-92

    • DOI

      10.3892/ijo.2016.3797

    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Elaidic acid, a trans fatty acid, enhances the metastasis of colorectal cancer cells.2017

    • Author(s)
      Ohmori H, Fujii K, Kadochi Y, Mori S, Nishiguchi Y, Fujiwara R, Kishi S, Sasaki T, Kuniyasu H
    • Journal Title

      Pathobiol

      Volume: in press Pages: in press

    • DOI

      10.1159/000449205

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Proton pump inhibitor induces-collagen expression in colonocytes is associated with collagenous colitis.2017

    • Author(s)
      Mori S, Kadochi Y, Luo Y, Fujiwara-Tani R, Nishiguchi Y, Kishi S, Fujii K, Ohmori H, Kuniyasu H
    • Journal Title

      World J Gastroentrol

      Volume: 23 Pages: 1586-1593

    • DOI

      10.3748/wjg.v23.i9.1586

    • Peer Reviewed / Open Access
  • [Journal Article] Remodeling of energy metabolism by a ketone body and medium-chain fatty acid suppressed proliferation of CT26 mouse colon cancer cells2017

    • Author(s)
      Kadochi Y, Mori S, Fujiwara-Tani R, Luo Y, Nishiguchi Y, Kishi S, Fujii K, Ohmori H, Kuniyasu H
    • Journal Title

      Oncol Lett

      Volume: in press Pages: in press

    • DOI

      in press

    • Peer Reviewed / Open Access
  • [Journal Article] Fatty acids induce stemness in the stromal cells of a CT26 mouse tumor model2017

    • Author(s)
      Kawahara I, Mori T, Goto K, Fujii K, Ohmori H, Fujiwara-Tani R, Kuniyasu H
    • Journal Title

      Pathobiol

      Volume: in press Pages: in press

    • DOI

      10.1159/000471854

    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Presentation] Trans fatty acid enhances the progression of colorectal cancer by activating cancer stem cells.2016

    • Author(s)
      Luo Y, Ohmori H, Kadochi Y, Mori S, Fujii K, Sasaki T, Kuniyasu H
    • Organizer
      76th Annual Meeting of Japanese Association for Cancer
    • Place of Presentation
      横浜
    • Year and Date
      2016-10-06 – 2016-10-08
  • [Presentation] Protumoral role of trans fatty acid2016

    • Author(s)
      Ohmori H, Kuwai T, Kitadai Y, Fujii K, Fujiwara R, Nishiguchi Y, Sasahira T, Kuniyasu H
    • Organizer
      Annual Meeting of American Association for Cancer Research 2016
    • Place of Presentation
      New Orleans, USA
    • Year and Date
      2016-04-16 – 2016-04-20
    • Int'l Joint Research
  • [Book] Role of CD10 in the metastasis of colorectal cancer to the liver.2016

    • Author(s)
      Kuniyasu H, Fujii K, Ohmori H, Fujiwara-Tani R, Luo Y, Sasaki T
    • Total Pages
      189
    • Publisher
      Research Media
  • [Book] Significance of anti-CLDN4 extracellular domain antibody in cancer treatment.2016

    • Author(s)
      Fujiwara-Tani R, Ohmori H, Fujii K, Sasaki T, Luo Y, Kuniyasu H
    • Total Pages
      189
    • Publisher
      Research Media

URL: 

Published: 2018-01-16  

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