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Research for understanding mechanisms to regulate retrotransposons and genes by piRNA-guided system

Research Project

Project/Area Number 17K08632
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field General medical chemistry
Research InstitutionNara Medical University (2018-2019)
Osaka University (2017)

Principal Investigator

Yoshimura Takuji  奈良県立医科大学, 医学部, 特任助教 (10506231)

Project Period (FY) 2017-04-01 – 2020-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2019: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2018: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Keywordsretrotransposon / 短いRNAs / レトロトランスポゾン / 免疫 / piRNA経路 / ping-pong cycle / 精原細胞 / ノックアウトマウス / 遺伝学 / ゲノム / 発生・分化 / 発現制御 / 核酸
Outline of Final Research Achievements

In germ cells, a molecular machinery, piRNA pathway, suppresses retrotransposons. Our data indicate that GTSF1 protein has a critical role in a process, where retrotransposon RNAs in mouse male germ cells are sliced by MILI-piRNA complexes. We next focused to retrotransposons in immune cells. Our data suggested that retrotransposon activation may link to the function of splenic T cells.

Academic Significance and Societal Importance of the Research Achievements

遺伝情報を担うゲノムDNAの維持にとって、レトロトランスポゾンの侵入は脅威であるため、その抑制機構が存在する。piRNA経路は、生殖細胞などにおいて働き、レトロトランスポゾンを抑制する細胞内免疫機構の一つである。研究代表者らは過去に、マウス雄の生殖細胞においてGTSF1がレトロトランスポゾンの抑制に関係していることを明らかにしたが、その分子機構は不明であった。本研究課題においては、GTSF1はpiRNA経路において働くことを示した。また、免疫とレトロトランスポゾンの関連を示唆するデータは、レトロトランスポゾン抑制機構と生体恒常性維持機構がどのように関連するのかを理解する上で重要である。

Report

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

    (9 results)

All 2018 2017 Other

All Int'l Joint Research (1 results) Journal Article (4 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (1 results) Remarks (3 results)

  • [Int'l Joint Research] Yale University(米国)

    • Related Report
      2017 Research-status Report
  • [Journal Article] CLICK: one-step generation of conditional knockout mice.2018

    • Author(s)
      Miyasaka Y, Uno Y, Yoshimi K, Kunihiro Y, Yoshimura T, Tanaka T, Ishikubo H, Hiraoka Y, Takemoto N, Tanaka T, Ooguchi Y, Skehel P, Aida T, Takeda J, Mashimo T.
    • Journal Title

      BMC Genomics.

      Volume: 19 Issue: 1 Pages: 318-318

    • DOI

      10.1186/s12864-018-4713-y

    • Related Report
      2018 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Mouse GTSF1 is an essential factor for secondary piRNA biogenesis2018

    • Author(s)
      Yoshimura Takuji、Watanabe Toshiaki、Kuramochi‐Miyagawa Satomi、Takemoto Noriaki、Shiromoto Yusuke、Kudo Akihiko、Kanai‐Azuma Masami、Tashiro Fumi、Miyazaki Satsuki、Katanaya Ami、Chuma Shinichiro、Miyazaki Jun‐ichi
    • Journal Title

      EMBO Reports

      Volume: 19 Issue: 4

    • DOI

      10.15252/embr.201642054

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Uncoupling of ER/mitochondrial oxidative stress in mTORC1 hyperactivation-associated skin hypopigmentation2018

    • Author(s)
      Fei Yang, Lingli Yang, Mari Wataya-Kaneda, Takuji Yoshimura, Atsushi Tanemura, Ichiro Katayama
    • Journal Title

      Journal of Investigative Dermatology

      Volume: 138 Issue: 3 Pages: 669-668

    • DOI

      10.1016/j.jid.2017.10.007

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Analysis of an ADTKD family with a novel frameshift mutation in MUC1 reveals characteristic features of mutant MUC1 protein2017

    • Author(s)
      Yamamoto S, Kaimori J, Yoshimura T, Namba T, Imai A, Kobayashi K, Imamura R, Ichimaru N, Kato K, Nakaya A, Takahara S, & Isaka Y
    • Journal Title

      Nephrology Dialysis Transplantation

      Volume: 32 Issue: 12 Pages: 2010-2007

    • DOI

      10.1093/ndt/gfx083

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] マウスGTSF1はPIWI-piRNAがターゲットRNAを切断するために重要な因子である2017

    • Author(s)
      能村卓慈、渡部聡朗、宮川さとみ、竹本記章、城本悠助、宮東昭彦、金井正美、田代 文、宮崎早月、刀谷在美、中馬新一郎、宮崎純一
    • Organizer
      日本分子生物学会
    • Related Report
      2017 Research-status Report
  • [Remarks] マウス生殖細胞において遺伝子変異からゲノムを防御する巧妙なメカニズムの一端を解明

    • URL

      http://resou.osaka-u.ac.jp/ja/research/2018/20180309_1

    • Related Report
      2017 Research-status Report
  • [Remarks] Genome does not like to excessively change...

    • URL

      https://www.eurekalert.org/pub_releases/2018-03/ou-gdn032718.php

    • Related Report
      2017 Research-status Report
  • [Remarks] Genome does not like to excessively change...

    • URL

      https://www.sciencedaily.com/releases/2018/03/180328092523.htm

    • Related Report
      2017 Research-status Report

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Published: 2017-04-28   Modified: 2022-02-21  

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