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Analysis of regulatory mechanism of inflammatory cytokine by miRNAs and development to novel treatment.

Research Project

Project/Area Number 16K10471
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General surgery
Research InstitutionJichi Medical University

Principal Investigator

Ohzawa Hideyuki  自治医科大学, 医学部, 講師 (60458271)

Co-Investigator(Kenkyū-buntansha) 西村 渉  自治医科大学, 医学部, 非常勤講師 (00334433)
北山 丈二  自治医科大学, 医学部, 教授 (20251308)
佐田 尚宏  自治医科大学, 医学部, 教授 (20261977)
三木 厚  自治医科大学, 医学部, 講師 (20570378)
寺谷 工  自治医科大学, 医学部, 講師 (70373404)
藤井 博文  自治医科大学, 医学部, 教授 (80438613)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordsマイクロRNA / 炎症性サイトカイン / 乳癌 / 化学療法 / 分子標的療法 / マイクロRNA / サイトカイン / 癌
Outline of Final Research Achievements

We performed comprehensive microRNA analysis using pre-treatment needle biopsy specimens from patients with breast cancer received neoadjuvant chemotherapy, in order to clarify microRNAs associated with drug resistance. In candidate miRNAs, miR-205, which was highly expressed in cases with non-pathologically complete response, altered drug sensitivity and enhanced IL-6 secretion in estrogen receptor positive HER2-positive breast cancer cell lines. A positive feedback was thought to exist in this mechanism. This study has shown that the network of microRNAs and inflammatory cytokines have associated with drug resistance and might be one of novel diagnostic and therapeutic methods.

Academic Significance and Societal Importance of the Research Achievements

実臨床では、分子標的薬の進歩によって癌薬物療法の選択肢が増えているにも関わらず、薬剤抵抗性が生じて治療に難渋することもある。乳癌の分野では炎症性サイトカインを標的とした治療はなく、マイクロRNAを利用した診断と治療も未だ実用化されていない。本研究を通して癌の薬剤抵抗性の機序を解明し、マイクロRNAやサイトカインのネットワークを標的とした新規バイオマーカーや治療標的を見出すことで、癌薬物療法の新たな治療戦略構築や治療の個別化に貢献できると考えられる。

Report

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

    (3 results)

All 2018 2017

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (2 results)

  • [Journal Article] Usefulness of miRNA profiles for predicting pathological responses to neoadjuvant chemotherapy in patients with human epidermal growth factor receptor 2-positive breast cancer.2017

    • Author(s)
      Ohzawa H, Miki A, Teratani T, Shiba S, Sakura Y, Nishimura W, Noda Y, Fukushima N, Fuji H, Hozumi Y, Mukai H, Yasuda Y.
    • Journal Title

      Oncology Letters

      Volume: 13巻 Issue: 3 Pages: 1731-1740

    • DOI

      10.3892/ol.2017.5628

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] miRNA profiles and the response of neoadjuvant chemotherapy in epidermal growth factor receptor 2-positive breast cancer2018

    • Author(s)
      Joji Kitayama, Hideyuki Ohzawa, Atsushi Miki, Takumi Teratani, Satomi Shiba and Naohiro Sata
    • Organizer
      Anti-Cancer Treatment Japan
    • Related Report
      2018 Annual Research Report
  • [Presentation] 胃癌腹膜播種治療におけるバイオマーカーとしての腹水中エクソソームマイクロ RNA解析2017

    • Author(s)
      大澤 英之
    • Organizer
      第76回日本癌学会学術総会
    • Related Report
      2017 Research-status Report

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

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