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Molecular mechanisms of segment specific hormone response in programmed cell death

Research Project

Project/Area Number 26850215
Research Category

Grant-in-Aid for Young Scientists (B)

Allocation TypeMulti-year Fund
Research Field Insect science
Research InstitutionHirosaki University

Principal Investigator

Kaneko Yu  弘前大学, 農学生命科学部, 助教 (90633610)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Keywordsホルモン応答 / 体節特異性 / 幼若ホルモン / 細胞死 / カイコ / ホルモン / 変態
Outline of Final Research Achievements

A pair of dermal glands, Verson’s glands, in lepidopteran insects, is attached to the dorsal part of every segment of the silkworm, Bombyx mori. We found that Verson’s glands of the posterior abdominal segments, from 7th to 9th segments, underwent programmed cell death (PCD) during pupal metamorphosis, although the others produced pupal specific proteins. This PCD was prevented by the application of methoprene shortly after the last larval ecdysis. These results indicate that the decline of JH at the beginning of 5th instar is necessary to induce the PCD. To identify the genes involved in the death, we analyzed the transcripts of the A7 Verson’s glands of JH treated larvae and non-treated larvae using the RNA-sequence technology. We identified that the number of transcripts of 105 genes were increased by JH application whereas those of 106 genes were decreased. RNAi of some genes whose expressions were altered by JH inhibited the PCD.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (12 results)

All 2017 2016 2015 2014 Other

All Int'l Joint Research (2 results) Journal Article (1 results) (of which Acknowledgement Compliant: 1 results) Presentation (9 results) (of which Int'l Joint Research: 1 results)

  • [Int'l Joint Research] Chiang Mai University(タイ)

    • Related Report
      2016 Annual Research Report
  • [Int'l Joint Research]

    • Related Report
      2016 Annual Research Report
  • [Journal Article] 幼若ホルモン生合成の制御機構.2016

    • Author(s)
      金児 雄、比留間 潔
    • Journal Title

      蚕糸・昆虫バイオテック

      Volume: 85 Pages: 117-125

    • NAID

      130006725593

    • Related Report
      2016 Annual Research Report
    • Acknowledgement Compliant
  • [Presentation] 体節特異的に起こるVerson’s glandの細胞死の分子機構.2017

    • Author(s)
      金児雄・奈良岡瑠美・高木圭子・比留間潔
    • Organizer
      日本応用動物昆虫学会
    • Place of Presentation
      東京農工大学
    • Year and Date
      2017-03-27
    • Related Report
      2016 Annual Research Report
  • [Presentation] Verson’s glandの蛹コミットメントにおけるBroad-complexの制御機構.2017

    • Author(s)
      金児雄・高木圭子・比留間潔
    • Organizer
      日本蚕糸学会
    • Place of Presentation
      つくば市・農林水産技術会議事務局筑波事務所
    • Year and Date
      2017-03-21
    • Related Report
      2016 Annual Research Report
  • [Presentation] 幼若ホルモンによるVerson’s gland蛹コミットメント抑制作用の分子機構2016

    • Author(s)
      金児雄・高木圭子・比留間潔
    • Organizer
      日本昆虫学会第76回大会・第60回日本応用動物昆虫学会大会
    • Place of Presentation
      大阪、大阪府立大学
    • Year and Date
      2016-03-26
    • Related Report
      2015 Research-status Report
  • [Presentation] 栄養シグナルで誘導されるベルソン氏線の 蛹コミットメントの分子機構2016

    • Author(s)
      金児雄・高木圭子・比留間潔
    • Organizer
      蚕糸・昆虫機能利用学術講演会(日本蚕糸学会第 86 回大会)
    • Place of Presentation
      京都、京都工芸繊維大学
    • Year and Date
      2016-03-17
    • Related Report
      2015 Research-status Report
  • [Presentation] RNAシークエンスを用いたベルソン氏腺蛹 コミットメントに関与する遺伝子の探索2015

    • Author(s)
      金児雄,高木圭子,熊野健太,田村大,奈良岡留美,比留間潔
    • Organizer
      蚕糸・昆虫機能利用学術講演会(日本蚕糸学会第 85 回大会)
    • Place of Presentation
      札幌、北海道大学
    • Year and Date
      2015-09-26
    • Related Report
      2015 Research-status Report
  • [Presentation] Pupal commitment of a single-celled Verson’s gland is induced in a two-step process by the insulin and TOR/Akt signals, which occurs gradually, not on an all-or-none basis.2015

    • Author(s)
      Hiruma, K., Kaneko, Y
    • Organizer
      Insect Hormone Workshop
    • Place of Presentation
      クレタ、ギリシャ
    • Year and Date
      2015-07-12
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Verson’s glandにおける体節特異的なホルモン応答遺伝子の網羅的解析2015

    • Author(s)
      金児雄・比留間潔
    • Organizer
      第59回日本応用動物昆虫学会大会
    • Place of Presentation
      山形市・山形大学小白川キャンパス
    • Year and Date
      2015-03-26 – 2015-03-28
    • Related Report
      2014 Research-status Report
  • [Presentation] Allatotropin inhibits juvenile hormone synthesis by the adult corpora allata of Bombyx mori2014

    • Author(s)
      Kaneko, Y., Hiruma, K
    • Organizer
      10th international conference on juvenile hormones
    • Place of Presentation
      つくば市
    • Year and Date
      2014-06-09 – 2014-06-13
    • Related Report
      2014 Research-status Report
  • [Presentation] Programed cell death of crochet forming cells during the last larval stadium of Bombyx mori.2014

    • Author(s)
      Takaki, K., Kaneko, Y., Hiruma, K.
    • Organizer
      10th international conference on juvenile hormones
    • Place of Presentation
      つくば市
    • Year and Date
      2014-06-09 – 2014-06-13
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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