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Target gene specificity of transcription factors involved in environmental stress response

Research Project

Project/Area Number 17K08617
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General medical chemistry
Research InstitutionTohoku University

Principal Investigator

KATSUOKA FUMIKI  東北大学, 東北メディカル・メガバンク機構, 教授 (30447255)

Project Period (FY) 2017-04-01 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2019: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordsNrf1 / Nf2 / 小Maf / ストレス応答 / Nrf2 / 酸化ストレス応答 / 転写制御 / Maf / 環境ストレス / CNC群因子 / 小Maf群因子
Outline of Final Research Achievements

In response to oxidative, xenobiotic stresses and cellular dysfunction, cells turn on a battery of cytoprotective genes to cope with them. These stress responses are regulated in part by various combinations of heterodimers composing bZIP transcription factors, CNC (Nrf1, Nrf2, Nrf3, p45 NFE2) and small Maf proteins (MafF, MafG, MafK). In this study, we established a new assay system, which allows us to analyze the function of each CNC-sMaf dimer specifically without interference from other endogenous CNC-sMaf dimers or sMaf homodimers. Using this system, together with next generation sequencing analyses, we have clearly shown that Nrf1-MafG and Nrf2-MafG heterodimers show different target gene specificity, while they bind to the same DNA sequences.

Academic Significance and Societal Importance of the Research Achievements

次世代シークエンス技術の発展により、包括的なヒト全ゲノム情報が蓄積しつつある。そして蓄積したゲノム情報の、機能アノテーション(意味付け)が重要となっている。しかしながら、機能的に重複したファミリーを形成する転写因子の正確な機能や、その因子が機能する遺伝子発現制御領域のアノテーションは不足している。本研究では、新規に確立した解析系を用いることで、Nrf1-MafG, Nrf2-MafG二量体の分子としての機能解明に取り組み、両者の結合配列に違いはないものの、機能的な点で明確な差異があることを実証した。これら情報は、遺伝子発現制御の分子機構の理解に役立つものと期待される。

Report

(5 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • Research Products

    (8 results)

All 2020 2019 2018 2017

All Journal Article (4 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 4 results,  Open Access: 4 results) Presentation (4 results)

  • [Journal Article] Identification of Dominant Transcripts in Oxidative Stress Response by a Full-Length Transcriptome Analysis2020

    • Author(s)
      Otsuki Akihito、Okamura Yasunobu、Aoki Yuichi、Ishida Noriko、Kumada Kazuki、Minegishi Naoko、Katsuoka Fumiki、Kinoshita Kengo、Yamamoto Masayuki
    • Journal Title

      Molecular and Cellular Biology

      Volume: 41 Issue: 2 Pages: 1-18

    • DOI

      10.1128/mcb.00472-20

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Landscape of electrophilic and inflammatory stress-mediated gene regulation in human lymphoblastoid cell lines2020

    • Author(s)
      Ishida Noriko、Aoki Yuichi、Katsuoka Fumiki、Nishijima Ichiko、Nobukuni Takahiro、Anzawa Hayato、Bin Li、Tsuda Miyuki、Kumada Kazuki、Kudo Hisaaki、Terakawa Takahiro、Otsuki Akihito、Kinoshita Kengo、Yamashita Riu、Minegishi Naoko、Yamamoto Masayuki
    • Journal Title

      Free Radical Biology and Medicine

      Volume: 161 Pages: 71-83

    • DOI

      10.1016/j.freeradbiomed.2020.09.023

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Enhancer remodeling promotes tumor-initiating activity in NRF2-activated non-small cell lung cancers2020

    • Author(s)
      Okazaki Keito、Anzawa Hayato、Liu Zun、Ota Nao、Kitamura Hiroshi、Onodera Yoshiaki、Alam Md. Morshedul、Matsumaru Daisuke、et al.
    • Journal Title

      Nature Communications

      Volume: 11 Issue: 1 Pages: 5911-5911

    • DOI

      10.1038/s41467-020-19593-0

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Direct and Specific Functional Evaluation of the Nrf2 and MafG Heterodimer by Introducing a Tethered Dimer into Small Maf-Deficient Cells2019

    • Author(s)
      Katsuoka Fumiki、Otsuki Akihito、Takahashi Mizue、Ito Shin、Yamamoto Masayuki
    • Journal Title

      Molecular and Cellular Biology

      Volume: 39 Issue: 20

    • DOI

      10.1128/mcb.00273-19

    • Related Report
      2019 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] テザード二量体を用いた機能解析が示すNrf1-MafGとNrf2-MafGヘテロ二量体の標的遺伝子選択特異性の差異.2019

    • Author(s)
      勝岡史城, 大槻晃史, 畑中望, 山本雅之
    • Organizer
      第42回日本分子生物学会年会
    • Related Report
      2019 Research-status Report
  • [Presentation] Nrf2-MafGテザードヘテロ二量体分子は小Maf群因子欠失細胞においてNrf2標的遺伝子の一群を特異的に活性化する.2018

    • Author(s)
      勝岡史城, 大槻晃史, 高橋瑞枝, 山本雅之
    • Organizer
      第91回 日本生化学会大会
    • Related Report
      2018 Research-status Report
  • [Presentation] 転写因子NRF2-sMaf二量体結合配列における多様性の評価2018

    • Author(s)
      大槻晃史, 勝岡史城, 山本雅之
    • Organizer
      第41回 日本分子生物学会年会
    • Related Report
      2018 Research-status Report
  • [Presentation] Maf認識配列 (MARE) を介した転写制御の破綻によって生じる致死的表現型の解析.2017

    • Author(s)
      大槻晃史, 勝岡史城, 山本雅之.
    • Organizer
      2017年度生命科学系学会合同年次大会
    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-01-27  

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