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Somatic cell epigenetics and gonadal sexual plasticity in fish

Research Project

Project/Area Number 16H04981
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Aquatic life science
Research InstitutionKyushu University

Principal Investigator

OHTA KOHEI  九州大学, 農学研究院, 准教授 (10585764)

Co-Investigator(Kenkyū-buntansha) Mohapatra Sipra  愛媛大学, 南予水産研究センター, 助教(特定教員) (80715441)
C Tapas  愛媛大学, 南予水産研究センター, 助教(特定教員) (70715440)
長濱 嘉孝  基礎生物学研究所, 名誉教授 (50113428)
松原 孝博  愛媛大学, 南予水産研究センター, 教授 (60443389)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2019)
Budget Amount *help
¥16,640,000 (Direct Cost: ¥12,800,000、Indirect Cost: ¥3,840,000)
Fiscal Year 2018: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000)
Fiscal Year 2017: ¥5,590,000 (Direct Cost: ¥4,300,000、Indirect Cost: ¥1,290,000)
Fiscal Year 2016: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Keywords性的可塑性 / エピジェネティクス / 魚類 / 生殖腺 / 生殖幹細胞 / 性転換 / エピジェネティックス / 性統御
Outline of Final Research Achievements

To understand the molecular and cellular mechanisms of gonadal sexual plasticity, the epigenetic regulation and the origins of newly formed gonadal cells during sex change were investigated. By using the wrasse, we found the presence of germline stem cells (GSCs) in both ovary and testis. Additionally, undifferentiated somatic cell (SSC) candidates were isolated. These GSCs and SSCs may collaboratively co-ordinate the origin of testicular tissue during sex change from females to males. Interestingly, these cells were also identified in the gonochoristic species, such as the Japanese anchovy and medaka highlighting that the cellular mechanism is conserved to some extent in fish.
On the other hand, together with various sex specific genes and steroidogenic enzymes, the genes responsible for epigenetic modifications changed drastically in association with the gonadal change from ovary to testis, suggesting that the epigenetic changes are involved in the gonadal sexual plasticity.

Academic Significance and Societal Importance of the Research Achievements

我々の構築したモデル実験系を用いて、生殖細胞系列と体細胞系列の2種の幹細胞が性転換魚と雌雄異体魚の雌雄の生殖腺(卵巣と精巣)に共通して存在することを見出すと共に、生殖腺体細胞で発現する性特異的遺伝子のDNAメチル化パターンに性差が認められること、性転換に伴いステロイド代謝酵素、性特異的因子、およびエピジェネティクス関連因子の各遺伝子群が著しい発現変動を示すことを明らかにした。こうした成体生殖腺の性的可塑性に関わる遺伝子、細胞、エピジェネティクスの基盤情報は、魚類を含む脊椎動物一般の性的可塑性の分子・細胞機構の研究に寄与するのみならず、水産における新たな性統御法や細胞操作技術の開発に貢献する。

Report

(4 results)
  • 2019 Final Research Report ( PDF )
  • 2018 Annual Research Report
  • 2017 Annual Research Report
  • 2016 Annual Research Report
  • Research Products

    (19 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (1 results) Journal Article (7 results) (of which Int'l Joint Research: 7 results,  Peer Reviewed: 7 results,  Open Access: 5 results,  Acknowledgement Compliant: 1 results) Presentation (11 results) (of which Int'l Joint Research: 10 results,  Invited: 2 results)

  • [Int'l Joint Research] Southwest University(中国)

    • Related Report
      2018 Annual Research Report
  • [Journal Article] Estrogen receptor β2 oversees germ cell maintenance and gonadal sex differentiation in medaka, Oryzias latipes2019

    • Author(s)
      2.Tapas Chakraborty, Sipra Mohapatra, Lin yan Zhou, Takahiro Matsubara, Taisen Iguchi, Yoshitaka Nagahama
    • Journal Title

      Stem Cell Reports

      Volume: 13 Issue: 2 Pages: 419-433

    • DOI

      10.1016/j.stemcr.2019.07.013

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Molecular cloning, characterization and expression analysis of complement components in red sea bream (Pagrus major) after Edwardsiella tarda and red sea bream Iridovirus (RSIV) challenge2018

    • Author(s)
      Noman Reza Mohammad Ali、Mohapatra Sipra、Shimizu Sonoko、Kitamura Shin-Ichi、Harakawa Shogo、Kawakami Hidemasa、Nakayama Kei、Sawayama Eitaro、Matsubara Takahiro、Ohta Kohei、Chakraborty Tapas
    • Journal Title

      Fish & Shellfish Immunology

      Volume: 82 Pages: 286-295

    • DOI

      10.1016/j.fsi.2018.08.027

    • Related Report
      2017 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ovarian aromatase loss-of-function mutant medaka undergo ovary degeneration and partial female-to-male sex reversal after puberty2018

    • Author(s)
      Nakamoto Masatoshi、Shibata Yasushi、Ohno Kaoru、Usami Takeshi、Kamei Yasuhiro、Taniguchi Yoshihito、Todo Takeshi、Sakamoto Takashi、Young Graham、Swanson Penny、Naruse Kiyoshi、Nagahama Yoshitaka
    • Journal Title

      Mol Cell Endocrinol

      Volume: 460 Pages: 104-122

    • DOI

      10.1016/j.mce.2017.07.013

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] 17β-HSD type 12-like is responsible for maturation-inducing hormone synthesis during oocyte maturation in masu salmon2017

    • Author(s)
      Ijiri Shigeho, Yasushi Shibata, Nonoha Takezawa, Yukinori Kazeto, Naoki Takatsuka, Erika Kato, Seishi Hagihara, Yuichi Ozaki, Shinji Adachi, Kohei Yamauchi and Yoshitaka Nagahama
    • Journal Title

      Endocrinology

      Volume: 158 Pages: 627-639

    • DOI

      10.1210/en.2016-1349

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
  • [Journal Article] Short-term starvation and realimentation helps stave off Edwardsiella tarda infection in red sea bream (Pagrus major)2017

    • Author(s)
      Mohapatra Sipra、Chakraborty Tapas、Reza Mohammad Ali Noman、Shimizu Sonoko、Matsubara Takahiro、Ohta Kohei
    • Journal Title

      Comparative Biochemistry and Physiology Part B: Biochemistry and Molecular Biology

      Volume: 206 Pages: 42-53

    • DOI

      10.1016/j.cbpb.2017.01.009

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Hatching enzymes disrupt aberrant gonadal degeneration by the autophagy/apoptosis cell fate decision2017

    • Author(s)
      Chakraborty Tapas、Mohapatra Sipra、Tobayama Megumi、Ohta Kayoko、Ryu Yong-Woon、Kazeto Yukinori、Ohta Kohei、Zhou Linyan、Nagahama Yoshitaka、Matsubara Takahiro
    • Journal Title

      Sci Rep

      Volume: 7 Issue: 1 Pages: 3183-3183

    • DOI

      10.1038/s41598-017-03314-7

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Journal Article] Autosomal gsdf acts as a male sex initiator in the fish medaka2016

    • Author(s)
      Zhang Xi、Guan Guijun、Li Mingyou、Zhu Feng、Liu Qizhi、Naruse Kiyoshi、Herpin Amaury、Nagahama Yoshitaka、Li Jiale、Hong Yunhan
    • Journal Title

      Sci Rep

      Volume: 6 Issue: 1 Pages: 19738-19738

    • DOI

      10.1038/srep19738

    • Related Report
      2016 Annual Research Report
    • Peer Reviewed / Open Access / Int'l Joint Research
  • [Presentation] Sexual spectrum of germline stem cells in fish2018

    • Author(s)
      Tapas Chakraborty, Sipra Mohapatra, T. Matsubara, K. Ohta, Y. Nagahama
    • Organizer
      International Symposium on Reproductive Physiology of Fish (ISRPF)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Exploring the potentiality of autophagy in fish fertility2018

    • Author(s)
      Sipra Mohapatra, Tapas Chakraborty, D. Pandey, T. Matsubara, K. Ohta
    • Organizer
      International Symposium on Reproductive Physiology of Fish (ISRPF)
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Hatching enzymes and aberrant gonadal degeneration in fish2017

    • Author(s)
      Tapas Chakraborty, Sipra Mohapatra, S. Shimizu, K. Ohta, Y. Nagahama
    • Organizer
      International Symposium on Recent Advances in Comparative Endocrinology (ISRACE 2017), Chennai, India
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Gender biasedness in autophagy: From a fish perspective2017

    • Author(s)
      Sipra Mohapatra, Tapas Chakraborty, S. Shimizu, T. Matsubara, K. Ohta
    • Organizer
      International Symposium on Recent Advances in Comparative Endocrinology (ISRACE 2017), Chennai, India
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sex specific expressions of oct4 (pou5f1) gene in gonadal germ cells of the hermaphrodite wrasse Pseudolabrus sieboldi and the Japanese anchovy Engraulis japonicus (gonochorism)2017

    • Author(s)
      Jun Fujita, T. Chakraborty, S. Mohapatra, K. Kurita, Y.W. Ryu, T. Matsubara, Y. Nagahama, K. Ohta
    • Organizer
      International Symposium "Fisheries Science for the Future Generations”
    • Related Report
      2017 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 魚類の性転換から養殖現場ニーズに関する研究まで2017

    • Author(s)
      太田 耕平
    • Organizer
      2017年度海洋若手研究集会
    • Related Report
      2017 Annual Research Report
    • Invited
  • [Presentation] Estrogen receptors: Major players in sex-biased regulation of autophagy in fish2017

    • Author(s)
      S. Mohapatra, T. Chakraborty, S. Shimizu, K. Ohta
    • Organizer
      18th International Congress of Comparative Endocrinology
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sexual plasticity and germ line stem cells in adult teleosts2017

    • Author(s)
      T. Chakraborty, S. Mohapatra, K. Ohta, Y. Nagahama
    • Organizer
      18th International Congress of Comparative Endocrinology
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] The sex of medaka fish: determination, differentiation, and plasticity2016

    • Author(s)
      Y. Nagahama
    • Organizer
      International Conference on Frontiers of Endocrinology.
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Germ line stem cells and sexual plasticity in medaka, Oryzias latipes2016

    • Author(s)
      T. Chakraborty, S. Mohapatra, K. Ohta, Y. Nagahama
    • Organizer
      8th International Symposium on Fish Endocrinology
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Sexual plasticity in adult medaka: a myth or reality?2016

    • Author(s)
      T. Chakraborty, S. Mohapatra, T. Matsubara, K. Ohta, Y. Nagahama
    • Organizer
      2nd Ehime Medaka Forum
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research

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Published: 2016-04-21   Modified: 2021-02-19  

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