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RNA modification controlling pharmacokinetics: elucidation of the mechanisms for application to drug discovery

Research Project

Project/Area Number 21H02624
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 47030:Pharmaceutical hygiene and biochemistry-related
Research InstitutionKanazawa University

Principal Investigator

Nakajima Miki  金沢大学, ナノ生命科学研究所, 教授 (70266162)

Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2023: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2022: ¥6,240,000 (Direct Cost: ¥4,800,000、Indirect Cost: ¥1,440,000)
Fiscal Year 2021: ¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
KeywordsRNA修飾 / RNAメチル化 / 転写後調節 / 薬物代謝酵素 / シトクロム P450 / カルボキシルエステラーゼ / シトクロムP450 / CYP3A4 / グルクロン酸転移酵素 / アルドケト還元酵素 / 核内受容体 / 加水分解酵素 / RNA編集 / 転写後修飾
Outline of Research at the Start

薬物代謝酵素の発現には大きな個人差があり、遺伝子多型や核内受容体等による転写調節機構が解明されてきた。しかし、mRNAとタンパク質発現量に相関が認められないことも多く、転写後調節機構の寄与が示唆されている。申請者らの近年の研究により、薬物代謝酵素の転写後調節におけるRNA編集とRNAメチル化 の関わりが徐々に明らかになりつつある。本研究では、多岐にわたる薬物代謝酵素の解析へ発展させることでRNA修飾の薬物動態制御における意義を提唱するとともに、RNA修飾を阻害または亢進させる低分子化合物を探索して、薬物相互作用の回避や医薬品適性使用に役立て、創薬へ応用するための分子基盤を構築する。

Outline of Final Research Achievements

Methylation of adenosine at the N6 position (m6A modification) is one of the major RNA modifications in mammals and is catalyzed by METTL3-METTL14 methyltransferase complex, called “writer” proteins. The m6A is demethylated by fat mass and obesity-associated protein (FTO) or AlkB homolog 5 (ALKBH5), called “eraser” proteins. “Reader” proteins recognize the m6A to enhance degradation of mRNA or to modulate translation or splicing, affecting the expression.
We found that the expression levels of CYP3A4, CYP2B6, and CES2, major drug-metabolizing enzymes, in human hepatoma-derived cell lines, were affected by the knockdown of m6A modification enzymes, resulting in the changes in drug metabolism potencies. We identified the m6A modification sites on CYP3A4, CYP2B6, and CES2 mRNAs that contribute to the expression changes, identified the reader proteins that recognize and act on them, and clarified the detailed molecular mechanisms.

Academic Significance and Societal Importance of the Research Achievements

臨床で使用されている医薬品化合物の多くは、代謝されることで薬理作用を失い、生体外へと排泄されるため、代謝反応を担う薬物代謝酵素の発現調節機構の理解は、医薬品適正使用ならびに創薬に有益となる。本研究では、薬物代謝酵素をコードするmRNA上で、アデノシンがメチル化される修飾 (m6A修飾) が、当該薬物代謝酵素の発現量を変化させ、薬物代謝能や脂質などの生体内物質の代謝能を変動する要因となっていることを明らかにした。薬物動態の変動要因として、新たな転写後調節機構を提唱した。

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Annual Research Report
  • 2021 Annual Research Report
  • Research Products

    (19 results)

All 2023 2022 2021 Other

All Journal Article (5 results) (of which Peer Reviewed: 4 results) Presentation (12 results) (of which Int'l Joint Research: 1 results,  Invited: 3 results) Remarks (2 results)

  • [Journal Article] A-to-I RNA editing and m6A modification modulating expression of drug-metabolizing enzymes2022

    • Author(s)
      Nakano Masataka、Nakajima Miki
    • Journal Title

      Drug Metabolism and Disposition

      Volume: - Issue: 5 Pages: 624-633

    • DOI

      10.1124/dmd.121.000390

    • Related Report
      2022 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Adenosine N6-methylation upregulates the expression of human CYP2B6 by altering the chromatin status2022

    • Author(s)
      Motoki Isono, Masataka Nakano, Tatsuki Fukami, and Miki Nakajima
    • Journal Title

      Biochemical Pharmacology

      Volume: 205 Pages: 115247-115247

    • DOI

      10.1016/j.bcp.2022.115247

    • Related Report
      2022 Annual Research Report
  • [Journal Article] Adenosine deaminases acting on RNA modulate the expression of the human pregnane X receptor2021

    • Author(s)
      Takemoto Seiya、Nakano Masataka、Nozaki Kaori、Fukami Tatsuki、Nakajima Miki
    • Journal Title

      Drug Metabolism and Pharmacokinetics

      Volume: 37 Pages: 100367-100367

    • DOI

      10.1016/j.dmpk.2020.11.002

    • NAID

      210000159780

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] The N6-methyladenosine modification posttranscriptionally regulates hepatic UGT2B7 expression2021

    • Author(s)
      Ondo Kyoko、Isono Motoki、Nakano Masataka、Hashiba Shiori、Fukami Tatsuki、Nakajima Miki
    • Journal Title

      Biochemical Pharmacology

      Volume: 189 Pages: 114402-114402

    • DOI

      10.1016/j.bcp.2020.114402

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] m6A modification impacts hepatic drug and lipid metabolism properties by regulating carboxylesterase 22021

    • Author(s)
      Takemoto Seiya、Nakano Masataka、Fukami Tatsuki、Nakajima Miki
    • Journal Title

      Biochemical Pharmacology

      Volume: 193 Pages: 114766-114766

    • DOI

      10.1016/j.bcp.2021.114766

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Presentation] 薬物動態を左右する転写後調節の解明と創薬への展開2023

    • Author(s)
      中島美紀
    • Organizer
      千里ライフサイエンス振興財団 新適塾「未来創薬への誘い」
    • Related Report
      2023 Annual Research Report
    • Invited
  • [Presentation] microRNAs as regulators of human drug-metabolizing enzymes2023

    • Author(s)
      Masataka Nakano and Miki Nakajima
    • Organizer
      39th Annual Meeting of KSOT/KEMS
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Hepatic CYP3A4 expression is modulated by m6A modification2022

    • Author(s)
      Shuji Takeuchi, Masataka Nakano, Seiya Takemoto, Tatsuki Fukami, and Miki Nakajima
    • Organizer
      The 37th Annual Meeting of JSSX
    • Related Report
      2022 Annual Research Report
  • [Presentation] RNA編集酵素ADAR1によるシトクロムc発現制御メカニズムの解明2022

    • Author(s)
      磯野元輝、中野正隆、深見達基、中島美紀
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] RNA編集酵素ADAR1によるE-カドヘリン発現制御が肺がんのパクリタキセル感受性に及ぼす影響2022

    • Author(s)
      稲本拓斗、中野正隆、深見達基、中島美紀
    • Organizer
      第45回日本分子生物学会年会
    • Related Report
      2022 Annual Research Report
  • [Presentation] UGT2B7の発現をRNA編集酵素ADARsが制御するメカニズムの解明2022

    • Author(s)
      前山岳杜、森田倖規、中野正隆、深見達基、中島美紀
    • Organizer
      日本薬学会北陸支部第134回例会
    • Related Report
      2022 Annual Research Report
  • [Presentation] A-to-I RNA編集酵素によるヒトAKR1C3の発現制御2022

    • Author(s)
      谷川豊夏、森田倖規、竹本誠也、中野正隆、深見達基、中島美紀
    • Organizer
      日本薬学会北陸支部第134回例会
    • Related Report
      2022 Annual Research Report
  • [Presentation] m6A修飾によるCYP2B6の発現制御機構の解明2022

    • Author(s)
      磯野元輝、中野正隆、深見達基、中島美紀
    • Organizer
      令和4年内外環境応答・代謝酵素研究会
    • Related Report
      2022 Annual Research Report
  • [Presentation] Epitranscriptional regulation of drug-metabolizing enzymes.2021

    • Author(s)
      Miki Nakajima and Masataka Nakano.
    • Organizer
      36th Japanese Society for the Study of Xenobiotics
    • Related Report
      2021 Annual Research Report
    • Invited
  • [Presentation] Effects of m6A modification on hepatic drug and lipid metabolism properties by regulation of carboxylesterase 2.2021

    • Author(s)
      Seiya Takemoto, Masataka Nakano, Tatsuki Fukami, and Miki Nakajima.
    • Organizer
      36th Japanese Society for the Study of Xenobiotics
    • Related Report
      2021 Annual Research Report
  • [Presentation] m6A modification-related enzymes METTL3 and ALKBH5 modulate CYP1A1 induction by upregulating ARNT expression in human lung cells.2021

    • Author(s)
      Takumi Nakano, Masataka Nakano, Tatsuki Fukami, and Miki Nakajima.
    • Organizer
      36th Japanese Society for the Study of Xenobiotics
    • Related Report
      2021 Annual Research Report
  • [Presentation] RNAメチル化転移酵素によるヒトCYP2B6の発現制御2021

    • Author(s)
      磯野元輝、中野正隆、深見達基、中島美紀
    • Organizer
      日本薬学会北陸支部第133回例会
    • Related Report
      2021 Annual Research Report
  • [Remarks] 金沢大学薬学系薬物代謝安全性学研究室

    • URL

      https://www.p.kanazawa-u.ac.jp/~taisha/index.html

    • Related Report
      2023 Annual Research Report 2022 Annual Research Report
  • [Remarks] 金沢大学薬学系薬物代謝安全性学研究室

    • URL

      http://www.p.kanazawa-u.ac.jp/~taisha/index.html

    • Related Report
      2021 Annual Research Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

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