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Gonadal soma-derived factor expression is a potential biomarker for predicting the effects of endocrine-disrupting chemicals on gonadal differentiation in medaka

Research Project

Project/Area Number 19H04294
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Review Section Basic Section 64010:Environmental load and risk assessment-related
Research InstitutionKobe University (2021)
Akita Prefectural University (2019-2020)

Principal Investigator

Horie Yoshifumi  神戸大学, 内海域環境教育研究センター, 助教 (60785137)

Co-Investigator(Kenkyū-buntansha) 山岸 隆博  国立研究開発法人国立環境研究所, 環境リスク・健康領域, 主任研究員 (30379333)
鑪迫 典久  愛媛大学, 農学研究科, 教授 (40370267)
竹花 佑介  長浜バイオ大学, バイオサイエンス学部, 准教授 (60432093)
Project Period (FY) 2019-04-01 – 2022-03-31
Project Status Completed (Fiscal Year 2021)
Budget Amount *help
¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
Fiscal Year 2019: ¥6,500,000 (Direct Cost: ¥5,000,000、Indirect Cost: ¥1,500,000)
Keywordsメダカ / gsdf / スクリーニング / 内分泌かく乱 / バイオマーカー / 生態毒性 / 内分泌かく乱化学物質
Outline of Research at the Start

我が国の化学物質のリスク管理は、OECD TGなどに基づいて行われているが、新規化学物質の届出件数は年々増加しており、従来の方法だけでは管理しきれないのが現状である。そこで本研究では、性決定遺伝子カスケードの遺伝子を指標とすることで、化学物質の有害性や最小影響濃度、無影響濃度を正確に予測できる新たな生態毒性試験法を開発することを目的とする。

Outline of Final Research Achievements

Androgenic or estrogenic endocrine-disrupting chemicals induce intersex or sex reversal in various teleost fish. In the present study, we examined the potential of gsdf gene as a biomarker, various chemicals exposed to Japanese medaka. As a result, estrogenic activity EDCs exposure tended to suppress the gsdf expression in XY embryo. On the other hand, androgenic activity EDCs exposure induced increasing of gsdf expression in XX embryo. However, anti-androgenic EDCs or chemicals without endocrine disrupting exposure did not induce change of the gsdf expression in both XX and XY embryos. These suggests that the gsdf gene at the embryonic stage can be used as a useful biomarker for the predicting of the impact of, at least, androgenic or estrogenic EDCs on gonadal differentiation.

Academic Significance and Societal Importance of the Research Achievements

近年、生態毒性試験を実施する際の「動物福祉」に関する問題が懸念されている。ヨーロッパでは、魚類の「胚期」は生物ではなく、胚期を用いた試験はin vitro試験として定義されており、最近の生態毒性試験では動物福祉の観点から、魚類の「胚期」のみを用いた試験が推奨されている。本研究成果によって、「胚期」のGsdf遺伝子を指標とすることで、魚類の性分化に影響を与える内分泌かく乱作用を示す化学物質を予測・検出できることがわかった。さらに、短期間で化学物質の特性(内分泌かく乱作用の有無)をスクリーニングできるため、今後の多種多様な新規化学物質のリスク管理にも対応できる可能性がある。

Report

(4 results)
  • 2021 Annual Research Report   Final Research Report ( PDF )
  • 2020 Annual Research Report
  • 2019 Annual Research Report
  • Research Products

    (6 results)

All 2022 2021 2020

All Journal Article (6 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 6 results)

  • [Journal Article] Effect of thyroid hormone‐disrupting chemicals on swim bladder inflation and thyroid hormone‐related gene expression in Japanese medaka and zebrafish2022

    • Author(s)
      Horie Yoshifumi、Nomura Miho、Okamoto Konori、Takahashi Chiho、Sato Tomomi、Miyagawa Shinichi、Okamura Hideo、Iguchi Taisen
    • Journal Title

      Journal of Applied Toxicology

      Volume: - Issue: 8 Pages: 1385-1395

    • DOI

      10.1002/jat.4302

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of salinity on physiological development and zinc toxicity in the marine medaka Oryzias melastigma2021

    • Author(s)
      Horie Yoshifumi、Takahashi Chiho
    • Journal Title

      Ecotoxicology

      Volume: 30 Issue: 6 Pages: 1138-1149

    • DOI

      10.1007/s10646-021-02429-y

    • NAID

      120007124106

    • Related Report
      2021 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Influence of triphenyltin on morphologic abnormalities and the thyroid hormone system in early-stage zebrafish (Danio rerio)2021

    • Author(s)
      Horie Yoshifumi、Chiba Takashi、Takahashi Chiho、Tatarazako Norihisa、Iguchi Taisen
    • Journal Title

      Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology

      Volume: 242 Pages: 108948-108948

    • DOI

      10.1016/j.cbpc.2020.108948

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Exposure to 4‐nonylphenol induces a shift in the gene expression of gsdf and testis‐ova formation and sex reversal in Japanese medaka ( Oryzias latipes )2020

    • Author(s)
      Horie Yoshifumi、Kanazawa Nobuhiko、Takahashi Chiho、Tatarazako Norihisa、Iguchi Taisen
    • Journal Title

      Journal of Applied Toxicology

      Volume: 41 Issue: 3 Pages: 399-409

    • DOI

      10.1002/jat.4051

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Zinc chloride influences embryonic development, growth, and Gh/Igf-1 gene expression during the early life stage in zebrafish (Danio rerio)2020

    • Author(s)
      Horie Yoshifumi、Yonekura Kei、Suzuki Ayaka、Takahashi Chiho
    • Journal Title

      Comparative Biochemistry and Physiology Part C: Toxicology & Pharmacology

      Volume: 230 Pages: 108684-108684

    • DOI

      10.1016/j.cbpc.2019.108684

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Bisphenol A induces a shift in sex differentiation gene expression with testis‐ova or sex reversal in Japanese medaka ( Oryzias latipes )2020

    • Author(s)
      Horie Yoshifumi、Kanazawa Nobuhiko、Takahashi Chiho、Tatarazako Norihisa、Iguchi Taisen
    • Journal Title

      Journal of Applied Toxicology

      Volume: - Issue: 6 Pages: 804-814

    • DOI

      10.1002/jat.3945

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed

URL: 

Published: 2019-04-18   Modified: 2023-01-30  

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