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細胞内メチレーションリズムと時計遺伝子mRNA制御のクロストークの分子基盤

Publicly Offered Research

Project AreaCrosstalk of transcriptional control and energy pathways by hub metabolites
Project/Area Number 26116713
Research Category

Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)

Allocation TypeSingle-year Grants
Review Section Biological Sciences
Research InstitutionKyoto University

Principal Investigator

FUSTIN JM  京都大学, 薬学研究科(研究院), 講師 (50711818)

Project Period (FY) 2014-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥9,360,000 (Direct Cost: ¥7,200,000、Indirect Cost: ¥2,160,000)
Fiscal Year 2015: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2014: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Keywordsm6A methylation / Circadian / RNA methylation
Outline of Annual Research Achievements

In the past year we have made good progress in our investigations, and are currently preparing our new manuscript.
We have quantified m6A mRNA methylation every 4 hours during 24 hours and have identified significant methylation peaks. A significant portion of these peaks were detected at all time points but some peaks were detected in a fraction of the samples. Interestingly, we have also observed significant circadian variations in the amount of m6A peaks detected as well as in the coverage of common peaks, with significantly higher methylation during the day.
We have also focussed our investigations on one candidate transcript characterised by one strongly significant peak detected at all time points. We have then investigated the role of this m6A site and identified that it controls the expression of two alternatively spliced mRNA of unknown function. We have then characterised at the proteomic level the function of these two isoforms and found that they have opposite functions on the circadian clock. To identify the physiological function of these two isoforms, we are currently making mice with a conditional deletion of only one of these isoforms.
In parallel we have also established mice with non-coding deletions of the m6A methylated locus in the 3'-UTR of our candidate gene by CRISPR-Cas9-mediated genome editing. We are currently characterising these mice.

In parallel we are continuing the establishment of Mettl3 conditional knock-out mice to obtain liver- and SCN-specific KO. This is proceeding well.

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Report

(2 results)
  • 2015 Annual Research Report
  • 2014 Annual Research Report
  • Research Products

    (8 results)

All 2015 2014

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (7 results) (of which Invited: 6 results)

  • [Journal Article] Isoform-specific monoclonal antibodies against 3beta-hydroxysteroid dehy drogenase/isomerase family provide markers for subclassification of hum an primary aldosteronism. .2014

    • Author(s)
      Doi M, Satoh F, Maekawa T, N akamura Y, Fustin JM, Tainaka M, Hotta Y, Takahashi Y, Morimoto R, Takase K, Ito S, Sasano H, and Okamura H
    • Journal Title

      J Clin Endocrinol Metab

      Volume: 99 Issue: 2 Pages: 257-62

    • DOI

      10.1210/jc.2013-3279

    • Related Report
      2014 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] m6A mRNA methylation is coupled to transcription but enhances dynamic changes in mRNA levels2015

    • Author(s)
      Jean-Michel Fustin
    • Organizer
      TGSW2015, Frontier Science on Transcription and Metabolism,
    • Place of Presentation
      Tsukuba
    • Year and Date
      2015-09-30
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] What is the most important trait or characteristic to be a successful scientist?2015

    • Author(s)
      Jean-Michel Fustin
    • Organizer
      TGSW2015, Frontier Science on Transcription and Metabolism, career section
    • Place of Presentation
      Tsukuba
    • Year and Date
      2015-09-30
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Of RNA methylation and clock genes2015

    • Author(s)
      Jean-Michel Fustin
    • Organizer
      【転写代謝システム】平成27年度班会議, Oral session 4, O-27
    • Place of Presentation
      菊南温泉 ユウベルホテル
    • Year and Date
      2015-06-14
    • Related Report
      2015 Annual Research Report
    • Invited
  • [Presentation] Role of the epitranscriptome in mammalian circadian system2014

    • Author(s)
      Jean- Michel Fustin
    • Organizer
      MBSJ2014(招待講演)
    • Place of Presentation
      Pacifico Yokohama
    • Year and Date
      2014-11-25 – 2014-11-27
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] m6A shows its mettle2014

    • Author(s)
      Jean- Michel Fustin
    • Organizer
      JSC21 第21回日本時間生物学会学術大会 (招待講演)
    • Place of Presentation
      九州大学医学部百年講堂
    • Year and Date
      2014-11-07 – 2014-11-09
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] m6A shows its mettle2014

    • Author(s)
      Jean- Michel Fustin
    • Organizer
      第7回 MSD SYMPHONY(招待講演)
    • Place of Presentation
      ホテルメトロポリタンエドモント飯田橋
    • Year and Date
      2014-09-15
    • Related Report
      2014 Annual Research Report
    • Invited
  • [Presentation] m6A shows its mettle2014

    • Author(s)
      Jean- Michel Fustin
    • Organizer
      SRBR2014
    • Place of Presentation
      Big Sky Resort, Montana
    • Year and Date
      2014-06-14 – 2014-06-18
    • Related Report
      2014 Annual Research Report

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Published: 2014-04-04   Modified: 2018-03-28  

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