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Identification of novel EMT molecular markers in oral cancer

Research Project

Project/Area Number 15H05018
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Pathobiological dentistry/Dental radiology
Research InstitutionUniversity of Yamanashi

Principal Investigator

SAITOH Masao  山梨大学, 大学院総合研究部, 教授 (90345041)

Research Collaborator Ishii Hiroki  
Sakamoto Kei  
Project Period (FY) 2015-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥12,870,000 (Direct Cost: ¥9,900,000、Indirect Cost: ¥2,970,000)
Fiscal Year 2017: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
Fiscal Year 2016: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2015: ¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
KeywordsEMT / 上皮間葉転換 / がん細胞 / ZEB1 / 浸潤 / 口腔癌 / CTC / TGF-beta
Outline of Final Research Achievements

The epithelial-mesenchymal transition (EMT) is an essential biological process during embryonic development, as well as during wound healing and tissue regeneration in adult tissues. The pathological significance of EMT in cancer remains controversial. It is clear, however, that ZEBs, representative EMT transcription factors, promote cancer progression by promoting invasion and drug resistance, but not tumorigenesis, as recently determined by numerous in vitro and in vivo studies using mouse cancer models.
ESE1, a member of the Ets transcription factor family, was repressed by activation of MEK-ERK pathway, resulting in induction of ZEBs through Ets1 upregulation. Conversely, Ets1 was repressed by inactivation of MEK-ERK pathway, resulting in reduction of ZEBs through ESE1 upregulation. These findings suggest that ESE1 and Ets1, whose expressions are reciprocally regulated by MEK-ERK pathway, define the EMT phenotype through controlling expression of ZEBs in cancer cells.

Academic Significance and Societal Importance of the Research Achievements

がん細胞の分化度は、癌の予後を判断する上で非常に重要な因子のひとつである。その分化度を規定しているのがEMTとよばれる現象で、最近話題のがん幹細胞の発生にも寄与していると考えられている。しかしながらEMTを選択的に診断できるような分子マーカーは無く、もしEMTを獲得した細胞を効率良く診断できれば、画期的な診断法のみならず¥革新的な治療法に展開できる。本研究では、EMT時におこる非常にユニークな選択的スプライシング変化に着目し、研究をおこなった。しかしながら、現時点まで、有効な分子マーカーは同定されておらず、現在も継続して、研究を進めている。

Report

(4 results)
  • 2018 Final Research Report ( PDF )
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • 2015 Annual Research Report
  • Research Products

    (13 results)

All 2018 2017 2016 2015

All Journal Article (6 results) (of which Peer Reviewed: 6 results,  Acknowledgement Compliant: 3 results,  Open Access: 2 results) Presentation (6 results) (of which Int'l Joint Research: 2 results,  Invited: 1 results) Book (1 results)

  • [Journal Article] Expression of ZEBs in gliomas is associated with invasive properties and histopathological grade2018

    • Author(s)
      Keiko Suzuki, Tomoyuki Kawataki, Kaori Endo, Keiji Miyazawa, Hiroyuki Kinouchi1 Masao Saitoh
    • Journal Title

      Oncology letter

      Volume: in press

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Ets1 and ESE1 reciprocally regulate expression of ZEB1/ZEB2, dependent on ERK1/2 activity, in breast cancer cells2017

    • Author(s)
      Sinh ND, Endo K, Miyazawa K, Saitoh M
    • Journal Title

      Cancer Science

      Volume: 108 Issue: 5 Pages: 952-960

    • DOI

      10.1111/cas.13214

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The transcription factor MAFK induces EMT and malignant progression of triple-negative breast cancer cells through its target GPNMB2017

    • Author(s)
      Yukari Okita, Minori Kimura, Rudy Xie, Chen Chen, Larina Tzu-Wei Shen, Yurika Kojima, Hiroyuki Suzuki, Masafumi Muratani, Masato Saitoh, Kentaro Semba, Carl-Henrik Heldin, and Mitsuyasu Kato
    • Journal Title

      Science Signaling

      Volume: 印刷中

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Ets1 and ESE1 reciprocally regulate expression of ZEB1/ZEB2, dependently on ERK1/2 activity, in breast cancer cells2017

    • Author(s)
      Nguyen Duy Sinh, Kaori Endo, Keiji Miyazawa, Masao Saitoh
    • Journal Title

      Cancer science

      Volume: 印刷中

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] The potential role of regulator of G-protein signaling 16 in cell motility mediated by δEF1 family proteins.2016

    • Author(s)
      Hoshi Y, Endo K, Shirakihara T, Fukagawa A, Miyazawa K, Saitoh M.
    • Journal Title

      FEBS Lett.

      Volume: 590 Issue: 2 Pages: 270-278

    • DOI

      10.1002/1873-3468.12042

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Maid is a negative regulator of transforming growth factor-β-induced cell migration.2015

    • Author(s)
      Motizuki M, Saitoh M, Miyazawa K.
    • Journal Title

      J Biochem.

      Volume: 158 Issue: 5 Pages: 435-444

    • DOI

      10.1093/jb/mvv054

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] Expression of ZEBs in gliomas is associated with invasive properties and histopathological grade2017

    • Author(s)
      Masao Saitoh
    • Organizer
      International EMT meeting
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] がんのheterogeneityとEMTシグナル2017

    • Author(s)
      斉藤正夫
    • Organizer
      口腔組織培養学会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] The roles of Ets1 and ESE1 in cancer cells2017

    • Author(s)
      斉藤正夫
    • Organizer
      歯科基礎医学会総会
    • Related Report
      2017 Annual Research Report
  • [Presentation] 乳癌細胞におけるZEB1/ZEB2の発現調節機構2017

    • Author(s)
      斉藤正夫、宮澤恵二
    • Organizer
      がん分子標的学会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Stat3 integrates cooperative Ras and TGF-b signals that induce Snail expression2015

    • Author(s)
      Masao Saitoh
    • Organizer
      the 7Th EMT meeting
    • Place of Presentation
      The Pullman Albert Park Melbourne(オーストラリア・メルボルン)
    • Year and Date
      2015-10-11
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Stat3 integrates cooperative Ras and TGF-b signals that induce Snail expression2015

    • Author(s)
      齋藤正夫
    • Organizer
      日本癌学会総会
    • Place of Presentation
      名古屋国際会議場(愛知県・名古屋市)
    • Year and Date
      2015-10-08
    • Related Report
      2015 Annual Research Report
  • [Book] Regulation of Signal Transduction in Human Cell Research2017

    • Author(s)
      Masao Saitoh
    • Publisher
      Springer社
    • Related Report
      2016 Annual Research Report

URL: 

Published: 2015-04-16   Modified: 2020-03-30  

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