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Inflammation -associated colon carcinogenesis by microRNA functional impairment

Research Project

Project/Area Number 16K19329
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Gastroenterology
Research InstitutionThe University of Tokyo

Principal Investigator

YOSHIKAWA Takeshi  東京大学, 医学部附属病院, 特任臨床医 (40631685)

Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2018: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2017: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
KeywordsmicroRNA / 炎症発癌 / 炎症性発癌 / 発癌 / 慢性炎症 / 炎症続発性腫瘍
Outline of Final Research Achievements

The biological significances of microRNA functional impairment during chronic inflammation was determined. When Dicer protein is decreased at about half level, it resulted in the higher possibilities of carcinogenesis. To discover the underlying molecular mechanisms, tetracyclin-regulated Dicer expressing cells were established, and using these cells it was found that CEB/P pathway is crucial in the inflammatory-tumorigenesis.ROCK inhibitor reverses these effects. Thus, ROCK inhibitor may be useful for the prevention of inflammation-associated tumorigenesis.

Academic Significance and Societal Importance of the Research Achievements

慢性炎症に続発する腫瘍は様々な臓器組織で見られるので、この制御は重要な課題である。炎症によってmicroRNA機能が減弱することが腫瘍形成に大きくかかわっていることが示唆されていたが、そのメカニズムとしてCEB/P経路が重要であることを見出した。また、microRNA機能を増強する作用を持つROCK阻害剤を用いると、慢性炎症に続発する腫瘍形成を抑制することが出来ることを見出し、今後の炎症続発性腫瘍の予防法として有用であることが示唆された。

Report

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

    (1 results)

All 2017

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

  • [Journal Article] Repression of miRNA function mediates inflammation-associated colon tumorigenesis.2017

    • Author(s)
      Yoshikawa T., J. F. Wu, M. Otsuka, T. Kishikawa, N. Suzuki, A. Takata, M. Ohno, R. Ishibashi, M. Yamagami, R. Nakagawa, N. Kato, M. Miyazawa, J. Han, and K. Koike
    • Journal Title

      Gastroenterology

      Volume: 152 Issue: 3 Pages: 631-643

    • DOI

      10.1053/j.gastro.2016.10.043

    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant

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Published: 2016-04-21   Modified: 2020-03-30  

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