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Development of a novel method for evaluating avian embryonic toxicity by continuous observation using a shell-less incubation system

Research Project

Project/Area Number 19K22912
Research Category

Grant-in-Aid for Challenging Research (Exploratory)

Allocation TypeMulti-year Fund
Review Section Medium-sized Section 63:Environmental analyses and evaluation and related fields
Research InstitutionEhime University

Principal Investigator

Iwata Hisato  愛媛大学, 沿岸環境科学研究センター, 教授 (10271652)

Project Period (FY) 2019-06-28 – 2021-03-31
Project Status Completed (Fiscal Year 2020)
Budget Amount *help
¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
Fiscal Year 2020: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2019: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
Keywordsニワトリ / 発生毒性 / 殻なし孵化装置 / 有機リン酸エステル系難燃剤 / 鳥類
Outline of Research at the Start

本研究の目的は、殻なし孵化装置を用いた表現型影響の経時的連続観察によって、生態毒性試験の盲点となっている環境汚染物質曝露による鳥類胚の発生毒性評価法を開発することである。有機リン酸エステル系難燃剤(PFRs)は、ヒトや野生生物の健康へ悪影響の可能性があるために生産・使用禁止が決められた有機臭素系難燃剤の代替物質として生産・使用されている。PFRsは国内外に生息する野鳥の組織や卵からも検出される。一方、これらPFRsの毒性に関する報告は非常に少ない。そこで本研究では、殻なし胚孵化装置を用いて、PFRsを曝露したニワトリ胚の多様な表現型影響を経時的に観察・測定し、発生毒性影響を評価する。

Outline of Final Research Achievements

The chicken has become a model organism for avian toxicity tests, because it is one of the most readily available birds and its genome has been decoded. However, since the chick embryos develop in non-transparent eggshells, it has not been possible to observe the developmental toxicity of the same individual over time in chemical exposure tests. Thus, as in a fish model organism, the zebrafish, it is difficult to obtain detailed information on "where, when, and how toxicity occurs in avian embryos" by exposure tests. In this study, we applied a device that develops embryos with no eggshells to toxicology research and succeeded in observing the developmental toxicity of chick embryos over time. Using this device, we were able to visualize the process of developmental toxicity in chick embryos.

Academic Significance and Societal Importance of the Research Achievements

化学物質の安全性審査には、試験方法等の国際的調和を目指した取組が進められており、OECDにより試験方法の標準化のための「OECDテストガイドライン」(TG)が定められている。日本でも、TGに則った生態影響試験が実施されてきた。しかしながら鳥類に関するTGは、 摂餌毒性試験や繁殖試験などいずれも成鳥を対象にした試験で、胚の表現型影響を詳細に調べる試験は含まれていない。本研究が示したように、新たな鳥類試験法によって発生毒性が評価できた学術的・社会的意義は大きい。

Report

(3 results)
  • 2020 Annual Research Report   Final Research Report ( PDF )
  • 2019 Research-status Report
  • Research Products

    (21 results)

All 2021 2020 2019 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Int'l Joint Research: 3 results,  Peer Reviewed: 3 results) Presentation (11 results) (of which Int'l Joint Research: 6 results,  Invited: 1 results) Remarks (4 results) Funded Workshop (1 results)

  • [Int'l Joint Research] Kyung Hee University(韓国)

    • Related Report
      2020 Annual Research Report
  • [Int'l Joint Research] Kyung Hee University(韓国)

    • Related Report
      2019 Research-status Report
  • [Journal Article] Effects of tris(2-chloroethyl) phosphate exposure on chicken embryos in a shell-less incubation system2021

    • Author(s)
      Kanda Kazuki、Ito Shohei、Koh Dong-Hee、Kim Eun-Young、Iwata Hisato
    • Journal Title

      Ecotoxicology and Environmental Safety

      Volume: 207 Pages: 111263-111263

    • DOI

      10.1016/j.ecoenv.2020.111263

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] 2,3,7,8-Tetrachlorodibenzo-p-dioxin prompted differentiation to CD4+CD8?CD25+ and CD4+CD8+CD25+ Tregs and altered expression of immune-related genes in the thymus of chicken embryos2021

    • Author(s)
      Cho Min-Kyung、Park Jae-Gon、Iwata Hisato、Kim Eun-Young
    • Journal Title

      Ecotoxicology and Environmental Safety

      Volume: 211 Pages: 111947-111947

    • DOI

      10.1016/j.ecoenv.2021.111947

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] The AHR1-ARNT1 dimerization pair is a major regulator of the response to natural ligands, but not to TCDD, in the chicken2020

    • Author(s)
      Koh Dong-Hee、Hwang Ji-Hee、Park Jae-Gon、Song Woo-Seon、Iwata Hisato、Kim Eun-Young
    • Journal Title

      Ecotoxicology and Environmental Safety

      Volume: 201 Pages: 110835-110835

    • DOI

      10.1016/j.ecoenv.2020.110835

    • Related Report
      2020 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Presentation] In vitro and in silico assessment of the activation of chicken estrogen receptor α by bisphenol analogs2021

    • Author(s)
      Mayumi Sakata, Yuka Yoshinouchi, Haruhiko Nakata, Eun-Young Kim, Hisato Iwata
    • Organizer
      Society of Toxicology (SOT) 60th Annual Meeting and ToxExpo
    • Related Report
      2020 Annual Research Report
  • [Presentation] Effects on the cardiovascular system of ex ovo chicken embryos exposed to tris (2-chloroethyl) phosphate (TCEP)2021

    • Author(s)
      Kazuki Kanda, Shohei Ito, Dong-Hee Koh, Eun-Young Kim, Hisato Iwata
    • Organizer
      Society of Toxicology (SOT) 60th Annual Meeting and ToxExpo
    • Related Report
      2020 Annual Research Report
  • [Presentation] Introduction of ecotoxicology researches from Iwata’s lab and LaMer2020

    • Author(s)
      Hisato Iwata
    • Organizer
      International Symposium on Research Collaboration: Usable Science Resulting in Impact
    • Related Report
      2020 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] ex-ovo ニワトリ胚におけるリン酸トリス(2-クロロエチル)(TCEP)の心血管毒性作用機序の解明2020

    • Author(s)
      神田宗欣, 伊藤匠平, Koh Dong-Hee, Kim Eun-Young, 岩田久人
    • Organizer
      第44 回鳥類内分泌研究会
    • Related Report
      2020 Annual Research Report
  • [Presentation] Cardiotoxicity assessment of tris (2-chloroethyl) phosphate (TCEP) in ex-ovo chicken embryos by in situ observation and transcriptome analysis2019

    • Author(s)
      Kazuki Kanda, Shohei Ito, Dong-Hee Koh, Eun-Young Kim, Hisato Iwata
    • Organizer
      39th International Symposium on Halogenated Persistent Organic Pollutants (DIOXIN2019)
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Ex-ovoニワトリ胚におけるリン酸トリス(2-クロロエチル)(TCEP)の発生毒性評価2019

    • Author(s)
      Kazuki Kanda, Shohei Ito, Dong-Hee Koh, Eun-Young Kim, Hisato Iwata
    • Organizer
      3rd International Chemical Hazard Symposium
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Developmental effects of exposure to tris (2-chloroethyl) phosphate (TCEP) on chicken embryos by in situ observation and transcriptome analysis2019

    • Author(s)
      Kazuki Kanda, Shohei Ito, Dong-Hee Koh, Eun-Young Kim, Hisato Iwata
    • Organizer
      Japan-Korea Joint Symposium on Adverse Outcome Pathways: From Exposome to Phenotypic Effects
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] In vitro assessment of chicken estrogen receptor transactivation by bisphenol analogs2019

    • Author(s)
      Mayumi Sakata, Yuka Yoshinouchi, Haruhiko Nakata, Eun-Young Kim, Hisato Iwata
    • Organizer
      Japan-Korea Joint Symposium on Adverse Outcome Pathways: From Exposome to Phenotypic Effects
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Presentation] Assessment of in vitro transactivation potencies of chicken estrogen receptor α by bisphenol analogs2019

    • Author(s)
      Mayumi Sakata, Yuka Yoshinouchi, Haruhiko Nakata, Eun-Young Kim, Hisato Iwata
    • Organizer
      第22回環境ホルモン学会研究発表会
    • Related Report
      2019 Research-status Report
  • [Presentation] Cardiovascular toxicity assessment of tris(2-chloroethyl)phosphate(TCEP) in ex-ovo chicken embryos2019

    • Author(s)
      Kazuki Kanda, Shohei Ito, Dong-Hee Koh, Eun-Young Kim, Hisato Iwata
    • Organizer
      第22回環境ホルモン学会研究発表会
    • Related Report
      2019 Research-status Report
  • [Presentation] Assessment of developmental toxicity of imidacloprid using chicken embryos in shell-less culture system2019

    • Author(s)
      Takara Fukunaga, Kazuki Kanda, Hisato Iwata
    • Organizer
      Japan-Korea Joint Symposium on Adverse Outcome Pathways: From Exposome to Phenotypic Effects
    • Related Report
      2019 Research-status Report
    • Int'l Joint Research
  • [Remarks] 研究室ウェブサイト日本語版

    • URL

      http://ecotoxiwata.jp

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
  • [Remarks] 研究室ウェブサイト英語版

    • URL

      http://ecotoxiwata.jp/en/

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
  • [Remarks] 研究室Facebook

    • URL

      http://fb.com/101980470429606

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
  • [Remarks] 岩田久人ORCID record

    • URL

      https://orcid.org/0000-0002-6867-0532

    • Related Report
      2020 Annual Research Report 2019 Research-status Report
  • [Funded Workshop] Japan-Korea Joint Symposium on Adverse Outcome Pathways: From Exposome to Phenotypic Effects2019

    • Related Report
      2019 Research-status Report

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Published: 2019-07-04   Modified: 2022-01-27  

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