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2019 Fiscal Year Annual Research Report

Elucidation of the mechanism for controlling of the uric acid synthesis pathway by miRNA

Research Project

Project/Area Number 18H02212
Research InstitutionTokyo University of Agriculture and Technology

Principal Investigator

天竺桂 弘子  東京農工大学, (連合)農学研究科(研究院), 教授 (80434190)

Co-Investigator(Kenkyū-buntansha) 佐藤 令一  東京農工大学, (連合)農学研究科(研究院), 教授 (30235428)
Project Period (FY) 2018-04-01 – 2021-03-31
KeywordsDicer / miRNA / 尿酸 / カイコ
Outline of Annual Research Achievements

BMmirmeguの生合成過程と機能を明らかにできれば、ステムループ構造変異がどのように尿酸合成制御に関わるかを理解できる。本年度はBMmirmeguの各組織や発育ステージにおける役割を詳細に検討するとともに、成熟型BMmirmeguの配列長について検討した。はじめにカイコ発育ステージと、各組織におけるBMmirmeguの発現を検討したところ、BMmirmeguは幼虫ステージの脱皮前や5齢幼虫の変態前に発現が顕著に変動することが明らかになった。このことから、BMmirmeguの発現は、エクダイソンに応答する可能性が推測された。また、表皮、精巣、卵巣で高発現していた。これらの組織は尿酸を多く含む。次に組織からDicerを抽出し、前駆体BMmirmeguと反応させ、切断により生じた成熟型BMmirmeguの配列長を検討したところ、BMmirmeguの配列長は正常型よりも短い可能性が強く示唆された。この結果を受けて、各組織において成熟型BMmirmeguと結合するタンパク質の種類をバイオインフォマティクスにより検討した。前科研費研究において取得済みの各組織のRNA-seqデータを再利用し、3'UTR領域を抽出し、BMmirmeguの成熟配列との網羅的なマッチング により、結合するタンパク質配列候補を選出した。結果、尿酸合成や神経発達に関与するmRNAに結合することが予測され、組織ごとに結合相手は異なることが示唆された。

Current Status of Research Progress
Current Status of Research Progress

2: Research has progressed on the whole more than it was originally planned.

Reason

当初の目的であったBMmirmeguの各組織や発育ステージにおける役割の検討と、成熟型BMmirmeguの配列長について検討できたため。

Strategy for Future Research Activity

Dicerによる前駆体BMmirmegu切断実験により、成熟型BMmirmeguの配列長は正常型よりも短い可能性が強く示唆された。この結果を受けて、来年度は配列を検討し、切断による影響を調べる予定である。また、BMmirmegu阻害剤とBMmirmeguミミックを用いて表現型に与える影響についても精査したい。

  • Research Products

    (16 results)

All 2020 2019 Other

All Int'l Joint Research (3 results) Journal Article (4 results) (of which Peer Reviewed: 4 results,  Open Access: 3 results) Presentation (7 results) (of which Int'l Joint Research: 7 results,  Invited: 2 results) Remarks (2 results)

  • [Int'l Joint Research] La Torobe University(オーストラリア)

    • Country Name
      AUSTRALIA
    • Counterpart Institution
      La Torobe University
  • [Int'l Joint Research] Kansas State University(米国)

    • Country Name
      U.S.A.
    • Counterpart Institution
      Kansas State University
  • [Int'l Joint Research] Chonnam University(韓国)

    • Country Name
      KOREA (REP. OF KOREA)
    • Counterpart Institution
      Chonnam University
  • [Journal Article] 6 Analysis of molecular mechanism for acceleration of polyembryony using gene functional annotation pipeline in Copidosoma floridanum.2020

    • Author(s)
      Sakamoto T, Nishiko M, Bono H, Nakazato T, Yoshimura J, Tabunoki H, Iwabuchi K.
    • Journal Title

      BMC Genomics.

      Volume: 21 Pages: 152

    • DOI

      10.1186/s12864-020-6559-3.

    • Peer Reviewed / Open Access
  • [Journal Article] Mass Killing by Female Soldier Larvae Is Adaptive for the Killed Male Larvae in a Polyembryonic Wasp2019

    • Author(s)
      Otsuki T, Uka D, Ito H, Ichinose G, Nii M, Morita S, Sakamoto T, Nishiko M, Tabunoki H, Kobayashi K, Matsuura K, Iwabuchi K, Yoshimura J.
    • Journal Title

      Sci Rep .

      Volume: 9 Pages: 7357

    • DOI

      10.1038/s41598-019-43643-3

    • Peer Reviewed / Open Access
  • [Journal Article] Apoptosis-mediated Vasa Down-Regulation Controls Developmental Transformation in Japanese Copidosoma Floridanum Female Soldiers2019

    • Author(s)
      Ohno H, Sakamoto T, Okochi R, Nishiko M, Sasaki S, Bono H, Tabunoki H, Iwabuchi K.
    • Journal Title

      Dev Biol .

      Volume: 456 Pages: 226-233

    • DOI

      10.1016/j.ydbio.2019.09.005.

    • Peer Reviewed
  • [Journal Article] Superoxide dismutase down-regulation and the oxidative stress is required to initiate pupation in Bombyx mori.2019

    • Author(s)
      Nojima Y, Bono H, Yokoyama T, Iwabuchi K, Sato R, Arai K, Tabunoki H.
    • Journal Title

      Sci Rep .

      Volume: 9 Pages: 14693

    • DOI

      10.1038/s41598-019-51163-3.

    • Peer Reviewed / Open Access
  • [Presentation] How biological defense systems work against oxidative stress in Bombyx mori2019

    • Author(s)
      Hiroko Tabunoki
    • Organizer
      BK (Brain of Korea) seminar
    • Int'l Joint Research / Invited
  • [Presentation] Functional analysis of a new type of SOD gene in Tribolium castaneum2019

    • Author(s)
      Maaya Nishiko, Kikuo Iwabuchi, Michael R. Kanost, Hiroko Tabunoki
    • Organizer
      8th international Symposium on Molecular Insect Science
    • Int'l Joint Research
  • [Presentation] Functional analysis of DJ-1 gene in the red flour beetle Tribolium castaneum2019

    • Author(s)
      Syunya Sasaki, Maaya Nishiko, Takuma Sakamoto, Takeru Nakazato, Yasuyuki Arakane, Hiroko Tabunoki
    • Organizer
      8th international Symposium on Molecular Insect Science
    • Int'l Joint Research
  • [Presentation] Exploration of the compounds which alter chemical structure and biological activity in the larval frass of Papilo machaon and Papilio memnon2019

    • Author(s)
      Miho Nakano, Sun Sinzeki, Nobuki Yamaguchi, Yosikazu Kitano, Kikuo Iwabuchi, Hiroko Tabunoki
    • Organizer
      8th international Symposium on Molecular Insect Science
    • Int'l Joint Research
  • [Presentation] Bee venom phospholipase A2 induces super oxide dismutase expression in Bombyx mori (silkworm) larvae2019

    • Author(s)
      Yuna Machida, Motoharu Hattori, Syunya Sasaki, Kikuo Iwabuchi, Sigeo Koizumi, Yasuyuki Arakane, Hiroko Tabunoki
    • Organizer
      8th international Symposium on Molecular Insect Science
    • Int'l Joint Research
  • [Presentation] Bee venom phospholipase A2 induces expression of prophenoloxidase protein in silkworm Bombyx mori larvae2019

    • Author(s)
      Motoharu Hattori, Yuna Machida, Miho Nakano, Kikuo Iwabuchi, Sigeo Koizumi, Michael R Kanost, Hiroko Tabunoki
    • Organizer
      8th international Symposium on Molecular Insect Science
    • Int'l Joint Research
  • [Presentation] What is the initiator in disturbing immunity system in C. floridanum?2019

    • Author(s)
      Hiroko Tabunoki
    • Organizer
      International workshop on Insect cuticlar Extracellular Matrix
    • Int'l Joint Research / Invited
  • [Remarks] 寄生蜂が宿主を独占する戦略~ライバルの寄生蜂が出す毒素を認識して攻撃専門の幼虫割合を高める~

    • URL

      https://www.tuat.ac.jp/outline/disclosure/pressrelease/2019/20191016_01.html

  • [Remarks] 昆虫は活性酸素を上手に利用する~蛹(さなぎ)になるために活性酸素を利用する仕組みを発見~

    • URL

      https://www.tuat.ac.jp/outline/disclosure/pressrelease/2019/20191028_01.html

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Published: 2021-01-27  

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