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トランスポゾン侵略から生殖ゲノムをまもるpiRNA作動原理の統合的理解

Research Project

Project/Area Number 17H06111
Research Category

Grant-in-Aid for Scientific Research (S)

Allocation TypeSingle-year Grants
Research Field Biomolecular chemistry
Research InstitutionThe University of Tokyo

Principal Investigator

塩見 美喜子  東京大学, 大学院理学系研究科(理学部), 教授 (20322745)

Project Period (FY) 2017-05-31 – 2020-03-31
Project Status Discontinued (Fiscal Year 2019)
Budget Amount *help
¥202,540,000 (Direct Cost: ¥155,800,000、Indirect Cost: ¥46,740,000)
Fiscal Year 2019: ¥38,220,000 (Direct Cost: ¥29,400,000、Indirect Cost: ¥8,820,000)
Fiscal Year 2018: ¥45,630,000 (Direct Cost: ¥35,100,000、Indirect Cost: ¥10,530,000)
Fiscal Year 2017: ¥45,760,000 (Direct Cost: ¥35,200,000、Indirect Cost: ¥10,560,000)
KeywordsPIWI / piRNA / トランスポゾン / RNAサイレンシング / ショウジョウバエ / Piwi
Outline of Annual Research Achievements

トランスポゾンの利己的な転移活性による生殖ゲノムの損傷は種の保存を脅かすため、有性生殖を伴う動物は、進化の過程でpiRNAを中核因子とするRNAサイレンシング機構を自己防衛手段として獲得したと考えられている。しかし、その動作原理は未だ不明である。本研究では、piRNAの動作原理を明らかにすることを目的とした。piRNAは、piRNAクラスタから転写された前駆体から生成されるが、piRNA生合成の仕組みは未だ明らかになっていないため、その解明に取り組んだ。piRNA生合成の必須因子としてArmitageが知られる。ArmitageのRNA結合様式を調べたところ、通常の状態ではArmitage はpiRNA前駆体に特異的に結合するが、上流因子Ybが存在しない場合は様々な細胞内RNAに結合してしまい、また、これらのRNAからトランスポゾン抑制の機能をもたないpiRNAを作り出してしまうことが判明した。つまりYbはArmiのRNA結合の特異性を制御する因子であり、ArmitageはpiRNA生合成を促進する因子であることが判明した。この成果はCell Reports誌に報告した。並行してpiRNA生合成の場として知られるYb bodyの形成機構及び要求性に関して研究を進めた。Yb bodyに局在する因子としてはYb、Armitage、SoYb、Vretが知られる。本解析から、YbのRNA結合能があればYb bodyが形成されること、その形成後は、Armi、Soyb/Vretの順番でタンパク質相互作用を介してYb bodyに順次局在することがわかった。Yb bodyが液相分離によって形成されることも判明した。この成果はEMBO Reports誌に報告した。

Research Progress Status

令和元年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和元年度が最終年度であるため、記入しない。

Report

(5 results)
  • 2019 Annual Research Report
  • 2018 Annual Research Report
  • 2017 Abstract ( PDF )   Comments on the Screening Results ( PDF )   Annual Research Report
  • Research Products

    (39 results)

All 2019 2018 2017 Other

All Journal Article (9 results) (of which Int'l Joint Research: 1 results,  Peer Reviewed: 9 results,  Open Access: 9 results) Presentation (27 results) (of which Int'l Joint Research: 12 results,  Invited: 13 results) Book (1 results) Remarks (2 results)

  • [Journal Article] Distinct and collaborative functions of Yb and Armitage in transposon-targeting piRNA biogenesis2019

    • Author(s)
      Hirotsugu Ishizu, Tatsuki Kinoshita, Shigeki Hirakata, Chihiro Komatsuzaki, and Mikiko C. Siomi
    • Journal Title

      Cell Reports

      Volume: 27 Issue: 6 Pages: 1822-1835

    • DOI

      10.1016/j.celrep.2019.04.029

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Requirements for multivalent Yb body assembly in transposon silencing in Drosophila2019

    • Author(s)
      Shigeki Hirakata, Hirotsugu Ishizu, Aoi Fujita, Yumiko Tomoe, Mikiko C. Siomi
    • Journal Title

      EMBO Reports

      Volume: 印刷中 Issue: 7

    • DOI

      10.15252/embr.201947708

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Two distinct transcriptional controls triggered by nuclear Piwi-piRISCs in the Drosophila piRNA pathway2018

    • Author(s)
      Sato K, Siomi MC.
    • Journal Title

      Curr. Opin. Struct. Biol.

      Volume: 53 Pages: 69-76

    • DOI

      10.1016/j.sbi.2018.06.005

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Piwi Nuclear Localization and Its Regulatory Mechanism in Drosophila Ovarian Somatic Cells2018

    • Author(s)
      Yashiro Ryu、Murota Yukiko、Nishida Kazumichi M.、Yamashiro Haruna、Fujii Kaede、Ogai Asuka、Yamanaka Soichiro、Negishi Lumi、Siomi Haruhiko、Siomi Mikiko C.
    • Journal Title

      Cell Reports

      Volume: 23 Issue: 12 Pages: 3647-3657

    • DOI

      10.1016/j.celrep.2018.05.051

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Hierarchical roles of mitochondrial Papi and Zucchini in Bombyx germline piRNA biogenesis2018

    • Author(s)
      Nishida Kazumichi M.、Sakakibara Kazuhiro、Iwasaki Yuka W.、Yamada Hiromi、Murakami Ryo、Murota Yukiko、Kawamura Takeshi、Kodama Tatsuhiko、Siomi Haruhiko、Siomi Mikiko C.
    • Journal Title

      Nature

      Volume: 555 Issue: 7695 Pages: 260-264

    • DOI

      10.1038/nature25788

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Evidence for convergent evolution of SINE-directed Staufen-mediated mRNA decay.2018

    • Author(s)
      Lucas BA, Lavi E, Shiue L, Cho H, Katzman S, Miyoshi K, Siomi MC, Carmel L, Ares M Jr, Maquat LE.
    • Journal Title

      Proc Natl Acad Sci U S A.

      Volume: 115 Issue: 5 Pages: 968-973

    • DOI

      10.1073/pnas.1715531115

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] The PIWI-Interacting RNA Molecular Pathway: Insights From Cultured Silkworm Germline Cells2018

    • Author(s)
      Sakakibara Kazuhiro、Siomi Mikiko C.
    • Journal Title

      BioEssays

      Volume: 40 Issue: 1 Pages: 1700068-1700068

    • DOI

      10.1002/bies.201700068

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] PIWI-Interacting RNA in Drosophila: Biogenesis, Transposon Regulation, and Beyond2017

    • Author(s)
      Yamashiro Haruna、Siomi Mikiko C.
    • Journal Title

      CHEMICAL REVIEWS

      Volume: - Issue: 8 Pages: 4404-4421

    • DOI

      10.1021/acs.chemrev.7b00393

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Use of the CRISPR-Cas9 system for genome editing in cultured Drosophila ovarian somatic cells.2017

    • Author(s)
      Ishizu H, Sumiyoshi T, Siomi MC
    • Journal Title

      Methods

      Volume: 126 Pages: 186-192

    • DOI

      10.1016/j.ymeth.2017.05.021

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Open Access
  • [Presentation] piRNA Biogenesis2019

    • Author(s)
      塩見美喜子
    • Organizer
      Keystone Symposia/Small Regulatory RMAs
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] piRNA biogenesis and function in Drosophila2019

    • Author(s)
      塩見美喜子,塩見美喜子
    • Organizer
      第20回武田科学財団生命科学シンポジウム
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Involvement of the Drosophila Brahma chromatin remodeling complex in Piwi-mediated transcriptional transposon silencing2019

    • Author(s)
      大西遼,塩見美喜子
    • Organizer
      第20回武田科学財団生命科学シンポジウム
    • Related Report
      2018 Annual Research Report
  • [Presentation] Hierarchical roles of mitochondrial PAPI and Zucchini in Bombyx germline piRNA biogenesis2018

    • Author(s)
      塩見美喜子
    • Organizer
      Chromatin,Epigenetics & Transcription
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] piRNA biogenesis and function2018

    • Author(s)
      塩見美喜子
    • Organizer
      Regulatory & Non-coding RNA
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Hierarchical roles of mitochondrial Papi and Zucchini in Bombyx germline piRNA biogenesis2018

    • Author(s)
      西田知訓,塩見美喜子
    • Organizer
      RNA2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] piRNA依存的な転写抑制機構におけるヒストンメチル化酵素SETDB1の作用機序の解明2018

    • Author(s)
      大角健,塩見美喜子
    • Organizer
      第20回日本RNA学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Requirements for multivalent Yb body assembly in transposon silencing in Drosophila2018

    • Author(s)
      塩見美喜子
    • Organizer
      EMBO Workshop piRNAs and PIWI protein
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] piRNA biogenesis and function2018

    • Author(s)
      塩見美喜子
    • Organizer
      China Nucleic Acids Forum
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] カイコ生殖細胞のトランスポゾン抑制機構におけるQinの機能解析2018

    • Author(s)
      西田知訓,塩見美喜子
    • Organizer
      第41回分子生物学会年会
    • Related Report
      2018 Annual Research Report
  • [Presentation] PIWI-Interacting RNA : Its Biogenesis and Functions2018

    • Author(s)
      Mikiko C.Siomi
    • Organizer
      2018 Keystone Symposia
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Crystal Structure of Silkworm PIWI-Clade Argonaute Siwi Bound to piRNA2017

    • Author(s)
      Mikiko C. Siomi
    • Organizer
      2017 International Conference on Structural Biological Macromolecules
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] piRNA biogenesis in Drosophila and Bombyx germlines2017

    • Author(s)
      Mikiko C.Siomi
    • Organizer
      Microsymposium2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] The role of Zucchini in 3’ end processing of the piRNA intermediate within the Siwi-pre-piRISC in silkworm germ cells2017

    • Author(s)
      Kazuhiro Sakakibara, Kazumichi M Nishida, Yuka W Iwasaki, Hiromi Yamada, Ryo Murakami, Haruhiko Siomi, and Mikiko C Siomi
    • Organizer
      Microsymposium2017
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Molecular mechanism of Piwi-piRNA nuclear localization in ovarian somas2017

    • Author(s)
      Mikiko C. Siomi
    • Organizer
      第43回内藤コンファレンス
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] piRNAはトランスポゾンの侵略から生殖ゲノムをどのように守るのか2017

    • Author(s)
      塩見美喜子
    • Organizer
      千里ライフサイエンス振興財団セミナー
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] ショウジョウバエpiRNA生合成因子Ybの機能解析2017

    • Author(s)
      平形 樹生、石津 大嗣、塩見 美喜子
    • Organizer
      第19回日本RNA学会年会
    • Related Report
      2017 Annual Research Report
  • [Presentation] Molecular mechanism of piRNA biogenesis2017

    • Author(s)
      Mikiko C.Siomi
    • Organizer
      EMBO EMBL Symposia /The Non-Coding Genome
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Requirement of nuclear mono-ubiquitination of Eggless/SETDB1 in piRNA-dependent transposon silencing2017

    • Author(s)
      Ken Ohsumi, Masaru Ariura, Saori Suzuki, Ryo Onishi, Kaoru Sato, Mikiko C. Siomi
    • Organizer
      RNAフロンティアミーティング2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] piRNA 生合成経路における Vreteno の機能解析2017

    • Author(s)
      藤田 あおい ,平形 樹生 ,石津 大嗣 ,巴裕 美子 ,塩見 美喜子
    • Organizer
      RNAフロンティアミーティング2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] piRNAを介したトランスポゾン転写抑制機構の解析2017

    • Author(s)
      大西 遼、佐藤 薫、塩見 美喜子
    • Organizer
      ConBio2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] ショウジョウバエ脳腫瘍抑制遺伝子2017

    • Author(s)
      山本 瞳、佐藤 薫、塩見 美喜子
    • Organizer
      ConBio2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] PAPIリン酸化修飾によるpiRNA成熟化制御機構の解明2017

    • Author(s)
      山田 紘実、西田 知訓、榊原 和洋、塩見 美喜子
    • Organizer
      ConBio2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] ミトコンドリア外膜に局在するpiRNA生合成因子GasZの機能解析2017

    • Author(s)
      山城 はるな、石津 大嗣、塩見 美喜子
    • Organizer
      ConBio2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] ショウジョウバエ卵巣体細胞におけるpiRNAとendo-siRNAのクロストーク2017

    • Author(s)
      小松崎 千尋、石津 大嗣、塩見 美喜子
    • Organizer
      ConBio2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] piRNA生合成因子BmQinの機能解析2017

    • Author(s)
      Yumi Miyata, Kazumichi M. Nishida, Yuka W. Iwasaki, Haruhiko Siomi and Mikiko C. Siomi1
    • Organizer
      ConBio2017
    • Related Report
      2017 Annual Research Report
  • [Presentation] primary piRNA生合成におけるRNAヘリカーゼ Armitageの機能解析2017

    • Author(s)
      木下 達貴、石津 大嗣、塩見 美喜子
    • Organizer
      ConBio2017
    • Related Report
      2017 Annual Research Report
  • [Book] ナノバイオ・メディシン2017

    • Author(s)
      宇理須 恒雄、佐久間 哲史、高田 望、竹中 繁織、小澤 岳昌、吉村 英哲、胡桃坂 仁志、越阪部 晃永、原田 昌彦、束田 裕一、宮成 悠介、塩見 美喜子、大西 遼
    • Total Pages
      232
    • Publisher
      近代科学社
    • ISBN
      4764950286
    • Related Report
      2017 Annual Research Report
  • [Remarks] 塩見研究室ホームページ

    • URL

      http://www-siomilab.biochem.s.u-tokyo.ac.jp/index.html

    • Related Report
      2019 Annual Research Report 2018 Annual Research Report
  • [Remarks] 塩見研究室

    • URL

      http://www-siomilab.biochem.s.u-tokyo.ac.jp/index.html

    • Related Report
      2017 Annual Research Report

URL: 

Published: 2017-06-01   Modified: 2023-10-16  

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