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Research for the mechanism of DNA silencing using small RNA as a guide strand

Research Project

Project/Area Number 16K07246
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Molecular biology
Research InstitutionMatsumoto Dental University (2017-2018)
Niigata University (2016)

Principal Investigator

Miyoshi Tomohiro  松本歯科大学, 歯学部, 講師 (60534550)

Co-Investigator(Kenkyū-buntansha) 伊東 孝祐  新潟大学, 自然科学系, 助教 (20502397)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2017: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
KeywordsArgonaute / small RNA / DNAサイレンシング / ウイルス / Rhodobacter sphaeroides / RNA / DNA / サイレンシング / 小分子RNA
Outline of Final Research Achievements

Argonaute (RsAgo) of Rhodobacter sphaeroides binds in a sequence-specific manner to a target DNA using small RNA as a guide strand. RsAgo is an important protein involved in the development of new gene analysis technology. In this study, the new results were obtained regarding (1) guide strand selection mechanisms of RsAgo, (2) the influence of each domain structure on nucleic acid recognition and function, and (3) the functional role of DNA silencing.

Academic Significance and Societal Importance of the Research Achievements

現在治療が困難である難治性疾患に対して、その原因遺伝子の発現を抑制することで根治治療となり得るのではないかと期待されている。すなわち、RNA-guided DNA interferenceは、小分子RNAにより配列依存的に希望する分子の細胞内での遺伝子発現を特異的に抑制する方法であり、その効果を持つ小分子RNA自体は開発が容易なため究極のテーラーメイド医薬として期待できる。本研究で得られる結果は、RNA干渉では不可能である「塩基配列特異的なDNAサイレンシング機構」の応用によるテーラーメイド医薬の開発を進める上で特に重要なものである。

Report

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

    (17 results)

All 2018 2017 2016

All Journal Article (6 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 6 results,  Open Access: 5 results,  Acknowledgement Compliant: 3 results) Presentation (11 results) (of which Int'l Joint Research: 1 results,  Invited: 1 results)

  • [Journal Article] The ribosomal stalk protein is crucial for the action of the conserved ATPase ABCE12018

    • Author(s)
      Imai, H., Abe, T., Miyoshi, T., Nishikawa, S., Ito, K., and Uchiumi, T.
    • Journal Title

      Nucleic Acids Res.

      Volume: 46 Issue: 15 Pages: 7820-7830

    • DOI

      10.1093/nar/gky619

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] The interaction between the ribosomal stalk proteins and translation initiation factor 5B promotes translation initiation2018

    • Author(s)
      Murakami, R., Singh, C.R., Morris, J., Tang, L., Harmon, I., Azuma, T., Miyoshi, T., Ito, K., Asano, K., and Uchiumi T.
    • Journal Title

      Mol. Cell Biol.

      Volume: 38 Issue: 16

    • DOI

      10.1128/mcb.00067-18

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Nucleic Acid-Binding Assay of Argonaute Protein Using Fluorescence Polarization.2018

    • Author(s)
      Miyoshi T.
    • Journal Title

      Methods Mol Biol.

      Volume: 1680 Pages: 123-129

    • DOI

      10.1007/978-1-4939-7339-2_8

    • ISBN
      9781493973385, 9781493973392
    • Related Report
      2018 Annual Research Report 2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Binding of translation elongation factors to individual copies of the archaeal ribosomal stalk protein aP1 assembled onto aP0.2017

    • Author(s)
      Honda, T., Imai, H., Suzuki, T., Miyoshi, T, Ito K, Uchiumi T.
    • Journal Title

      Biochem Biophys Res Commun.

      Volume: 483 Issue: 1 Pages: 153-158

    • DOI

      10.1016/j.bbrc.2016.12.175

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Structural basis for the recognition of guide RNA and target DNA heteroduplex by Argonaute.2016

    • Author(s)
      Miyoshi, T., Ito, K., Murakami, R., Uchiumi T.
    • Journal Title

      Nature Commun.

      Volume: 7 Issue: 1 Pages: 11846-11846

    • DOI

      10.1038/ncomms11846

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Crystal structure of translation initiation factor 5B from the crenarchaeon Aeropyrum pernix.2016

    • Author(s)
      Murakami R, Miyoshi T, Uchiumi T, Ito K.
    • Journal Title

      Proteins

      Volume: in press Issue: 5 Pages: 712-717

    • DOI

      10.1002/prot.25009

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Presentation] バクテリアの新たな自己防衛システム2018

    • Author(s)
      三好智博
    • Organizer
      第71回日本細菌学会関西支部総会
    • Related Report
      2018 Annual Research Report
    • Invited
  • [Presentation] 光合成細菌で明らかとなったDNAサイレンシング機構2017

    • Author(s)
      三好智博
    • Organizer
      第2回光合成細菌ワークショップ
    • Related Report
      2017 Research-status Report
  • [Presentation] リボソームタンパク質aP1による翻訳ATPase因子の認識機構2017

    • Author(s)
      今井 大達、阿部 高也、三好 智博、伊東 孝祐、内海 利男
    • Organizer
      第19回日本RNA学会
    • Related Report
      2017 Research-status Report
  • [Presentation] 細菌ArgonauteのRNA-guided DNA interference2017

    • Author(s)
      三好智博
    • Organizer
      第11回細菌学若手コロッセウム
    • Related Report
      2017 Research-status Report
  • [Presentation] Archaeal ribosomal stalk protein aP1 directly binds to the ribosome-recycling factor aABCE1, and promotes ribosome-dependent ATP hydrolysis2017

    • Author(s)
      Imai H, Abe T, Miyoshi T, Ito K and Uchiumi T
    • Organizer
      EMBL Meeting
    • Related Report
      2017 Research-status Report
  • [Presentation] 微生物におけるArgonauteの新機能2017

    • Author(s)
      三好智博
    • Organizer
      第5回五大学微生物研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] Argonauteタンパク質の新規構造基盤の解明2017

    • Author(s)
      三好智博
    • Organizer
      第1回オーラルサイエンス研究会
    • Related Report
      2017 Research-status Report
  • [Presentation] 翻訳リサイクル因子ABCE1-リボソームストーク間相互作用とその役割2017

    • Author(s)
      今井 大達、阿部 高也、三好 智博、伊東 孝祐、内海 利男
    • Organizer
      第40回日本分子生物学会年会
    • Related Report
      2017 Research-status Report
  • [Presentation] 細菌で見つかった「RNAをガイド鎖とするDNAサイレンシング機構」の構造解析2017

    • Author(s)
      三好智博
    • Organizer
      岩手医科大学 構造生物薬学セミナー
    • Related Report
      2017 Research-status Report
  • [Presentation] 環状ペプチドRA-VIIはEF-2・GTP複合体構造を固定化する2016

    • Author(s)
      三好智博、片貝勇人、下出朗誠、竹谷孝一、八森章、内海利男
    • Organizer
      第4回 Ribosome Meeting
    • Place of Presentation
      大阪医科大学
    • Year and Date
      2016-09-17
    • Related Report
      2016 Research-status Report
  • [Presentation] A possible mechanism for small RNA processing by R. sphaeroides Argonaute2016

    • Author(s)
      Tomohiro Miyoshi, Kosuke Ito, Ryo Murakami and Toshio Uchiumi
    • Organizer
      RNA 2016
    • Place of Presentation
      The International Conference Center in Kyoto
    • Year and Date
      2016-06-28
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research

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

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