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2021 Fiscal Year Final Research Report

Production of Daphnia for endocrine disruptor sensing

Research Project

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Project/Area Number 17H01880
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Risk sciences of radiation and chemicals
Research InstitutionOsaka University

Principal Investigator

Watanabe Hajime  大阪大学, 工学研究科, 教授 (80212322)

Project Period (FY) 2017-04-01 – 2021-03-31
Keywords化学物質影響 / ミジンコ / ゲノム編集 / 核内受容体
Outline of Final Research Achievements

In order to evaluate the biological effects of chemicals, it is important to develop methods using living organisms in addition to the conventional analytical approaches. Chemicals have a very wide range of mod of actions, one of which is hormone-like chemicals. In this study, we aimed to introduce a human-type chemical response system based on nuclear receptors into Daphnia magna. We improved the genome editing efficiency by modifying the established transgene transfer system, and established a system that efficiently transfers foreign genes without position effects. Using this system, we succeeded to introduce a human-type chemical response system. We confirmed the gene response of this human-type transgenic Daphnia magna by actual exposure of hormone like chemicals.

Free Research Field

環境生物学

Academic Significance and Societal Importance of the Research Achievements

従来はヒトにおける化学物質影響を評価するためには培養細胞を用いた解析が必要であり、コストと時間がかかっていた。本研究では、一連の関連遺伝子をミジンコに導入することに成功し、実際に化学物質やホルモンによって導入された遺伝子が応答するこを確認した。これは従来の培養細胞を用いた手法とことなり、飼育が用意で安価に維持できるミジンコを用いてヒトへの化学物質影響評価が可能になることを示している。本研究を展開することにより、安価で簡便に化学物質影響を評価することが可能になることが期待できる。

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Published: 2023-01-30  

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