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Studies on structure and function of sex steroids in amphioxus

Research Project

Project/Area Number 23570070
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Morphology/Structure
Research InstitutionThe University of Tokyo

Principal Investigator

KUBOKAWA Kaoru  東京大学, 理学(系)研究科(研究院), 特任教授 (30240740)

Co-Investigator(Renkei-kenkyūsha) ANDO Hironori  新潟大学, 佐渡臨海実験所, 教授 (60221743)
Research Collaborator KATSU Yoshinao  
KATO Akiko  
KOJIMA Ayaka  
ROY Sonali  
URANO Akihisa  
Project Period (FY) 2011-04-28 – 2015-03-31
Project Status Completed (Fiscal Year 2014)
Budget Amount *help
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2011: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
Keywords性ステロイド / ナメクジウオ / 脊索動物 / 進化 / 神経索 / in situ ハイブリダイゼーション / エストロゲン / 卵巣 / 精巣 / 糖タンパク質ホルモン / 神経内分泌 / ステロイド / ステロイド受容体 / ホルモン
Outline of Final Research Achievements

Sex steroids are specific hormones in vertebrates, which control the reproductive function and maintain the balance of the nerve and visceral activities of the body. Their role is manifested through a complex metabolic system of steroidogenesis Thus, new functions of the sex steroid system are being discovered; however, many other functions remain unknown. In this study, we examined the sex steroid metabolic system of amphioxus. We found a major sex steroid metabolic pathway, 5α-reduced steroid, which is rarely used in vertebrates. In addition, the sex steroids are actively synthesized in the nerve system. It suggests that sex steroidogenesis of vertebrates is acquired in step with the evolution of a notochord and diverged during the evolution in Chordata.

Report

(5 results)
  • 2014 Annual Research Report   Final Research Report ( PDF )
  • 2013 Research-status Report
  • 2012 Research-status Report
  • 2011 Research-status Report
  • Research Products

    (20 results)

All 2015 2014 2013 2012 2011 Other

All Journal Article (4 results) (of which Peer Reviewed: 4 results) Presentation (9 results) (of which Invited: 2 results) Book (3 results) Remarks (4 results)

  • [Journal Article] Shallow submarine hydrothermal activity with significant contribution of magmatic water producing talc chimneys in the Wakamiko Crater of Kagoshima Bay, southern Kyushu, Japan.2013

    • Author(s)
      Yamanaka, T., Maeto, K., Akashi, H., Ishibashi, J., Miyoshi, Y., Okamura, K., Noguchi, T., Kuwahara, Y., Toki, T., Tsunogai, U., Ura, T., Nakatani, T., Maki, T., Kubokawa, K., and Chiba, H.
    • Journal Title

      J. Volcan. Geotherm. Res.

      Volume: (in press) Pages: 74-84

    • DOI

      10.1016/j.jvolgeores.2013.04.007

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Actin capping proteins, CapZ (β-actinin) and tropomodulin in amphioxus striated muscle2012

    • Author(s)
      Bao, Y., Kake, T., Hanashima, A., Nomiya, U., Kubokawa, K. and Kimura, S.
    • Journal Title

      Gene

      Volume: Vol. 510 (1) Issue: 1 Pages: 78-86

    • DOI

      10.1016/j.gene.2012.07.081

    • Related Report
      2012 Research-status Report
    • Peer Reviewed
  • [Journal Article] Sialome analysis of the cephalochordate Branchiostoma belcheri, a key organism for vertebrate evolution2012

    • Author(s)
      Guerardel, Yann
    • Journal Title

      Glycobiology

      Volume: 22 Issue: 4 Pages: 479-491

    • DOI

      10.1093/glycob/cwr155

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Journal Article] Amphioxus connectin exhibits merged structure as invertebrate connectin in I-band region and vertebrate connectin in A-band region2011

    • Author(s)
      Ohtsuka, S., Hanashima, A., Kubokawa, K., Bao, Y., Tando, Y., Kohmaru, J., Nakaya, H., Maruyama, K. and Kimura, S.
    • Journal Title

      J. Mol. Biol

      Volume: Vol. 409 (3) Issue: 3 Pages: 415-426

    • DOI

      10.1016/j.jmb.2011.04.010

    • Related Report
      2011 Research-status Report
    • Peer Reviewed
  • [Presentation] ナメクジウオの内柱における内分泌物質の局在2015

    • Author(s)
      小島彩加・窪川かおる
    • Organizer
      第67回日本動物学会関東支部大会
    • Place of Presentation
      早稲田大学先端生命医科学センター
    • Year and Date
      2015-03-14
    • Related Report
      2014 Annual Research Report
  • [Presentation] ナメクジウオ内柱の甲状腺機能と関連遺伝子の局在2014

    • Author(s)
      小島彩加・窪川かおる
    • Organizer
      第85回日本動物学会大会
    • Place of Presentation
      東北大学川内北キャンパス
    • Year and Date
      2014-09-11 – 2014-09-13
    • Related Report
      2014 Annual Research Report
  • [Presentation] ナメクジウオの神経索と生殖腺におけるステロイド代謝酵素の遺伝子発現2013

    • Author(s)
      窪川かおる、加藤明子、高橋明義
    • Organizer
      日本動物学会
    • Place of Presentation
      岡山大学(岡山県岡山市)
    • Related Report
      2013 Research-status Report
  • [Presentation] ナメクジウオにおける脱ヨウ素酵素の局在について2013

    • Author(s)
      小島彩加、加藤明子、窪川かおる
    • Organizer
      日本動物学会
    • Place of Presentation
      岡山大学(岡山県岡山市)
    • Related Report
      2013 Research-status Report
  • [Presentation] 無脊椎動物にみる下垂体ホルモンと受容体の進化2013

    • Author(s)
      窪川かおる
    • Organizer
      日本下垂体研究会
    • Place of Presentation
      ホテル千秋閣(岩手県花巻市)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] 境界動物の性ステロイド代謝系とその制御2013

    • Author(s)
      窪川かおる
    • Organizer
      東京大学大気海洋研究所共同利用シンポジウム
    • Place of Presentation
      東京大学大気海洋研究所(千葉県柏市)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] ナメクジウオの性ステロイド代謝酵素の遺伝子発現部位

    • Author(s)
      窪川かおる
    • Organizer
      日本動物学会
    • Place of Presentation
      大阪市 大阪大学
    • Related Report
      2012 Research-status Report
  • [Presentation] 学校教育で水産を学ぶ機会について  ー総合的水産教育の視点からー

    • Author(s)
      窪川かおる
    • Organizer
      日本水産学会
    • Place of Presentation
      下関市 水産大学校
    • Related Report
      2012 Research-status Report
  • [Presentation] ナメクジウオにおける神経葉ホルモン産生細胞の分布

    • Author(s)
      加藤明子
    • Organizer
      日本動物学会関東支部
    • Place of Presentation
      東京都 東京工業大学
    • Related Report
      2012 Research-status Report
  • [Book] 海洋生物学2015

    • Author(s)
      Philip V.Mladenov (翻訳)窪川かおる
    • Total Pages
      196
    • Publisher
      丸善出版社
    • Related Report
      2014 Annual Research Report
  • [Book] 海のプロフェッショナル2013

    • Author(s)
      窪川かおる
    • Total Pages
      40
    • Publisher
      東海大学出版会
    • Related Report
      2012 Research-status Report
  • [Book] ナメクジウオ (研究者が教える動物飼育 第3巻,針山孝彦,小柳光正,他編)2012

    • Author(s)
      窪川かおる
    • Total Pages
      10
    • Publisher
      共立出版
    • Related Report
      2012 Research-status Report
  • [Remarks] 東京大学理学系研究科附属臨海実験所

    • URL

      http://www.mmbs.s.u-tokyo.ac.jp/

    • Related Report
      2014 Annual Research Report
  • [Remarks] 東京大学大学院理学系研究科附属臨海実験所

    • URL

      http://www.mmbs.s.u-tokyo.ac.jp/

    • Related Report
      2013 Research-status Report
  • [Remarks] 東京大学理学系研究科附属臨海実験所

    • URL

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

    • Related Report
      2012 Research-status Report
  • [Remarks]

    • URL

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

    • Related Report
      2011 Research-status Report

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Published: 2011-08-05   Modified: 2019-07-29  

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