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2023 Fiscal Year Final Research Report

Novel skin sensitization assay using luciferase-expressing transgenic mice.

Research Project

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Project/Area Number 19K19413
Research Category

Grant-in-Aid for Early-Career Scientists

Allocation TypeMulti-year Fund
Review Section Basic Section 58020:Hygiene and public health-related: including laboratory approach
Research InstitutionGihu University of Medical Science (2023)
Gifu Pharmaceutical University (2019-2020)

Principal Investigator

Ido Akiko  岐阜医療科学大学, 薬学部, 講師 (00336629)

Project Period (FY) 2019-04-01 – 2022-03-31
Keywords皮膚感作性試験 / Local Lymph Node Assay / OECDガイドライン / 動物愛護 / リンパ球 / 代替法
Outline of Final Research Achievements

We aimed to development a skin sensitization assay that strongly reflects the 2Rs (Reduction and Refinement) from an animal welfare perspective, using transgenic mice with high expression of luciferase in lymphocytes (Luc-Tg mice), which we originally generated, and in vivo imaging technology. In this study, the skin sensitization test using Luc-Tg mice yielded the same evaluation results as the Local Lymph Node Assay (LLNA), the current skin sensitization definitive test, suggesting the possibility of establishing a new test method.

Free Research Field

環境衛生学

Academic Significance and Societal Importance of the Research Achievements

本研究により、我々が独自に作製したLuc-Tgマウスを用いて皮膚感作性を評価することで、従来法であるLLNAで使用する放射性物質(RI)を必要とせず、またLLNAよりも操作が簡便なスループット性の向上した試験法を新たに構築できる可能性が示された。本成果により新規試験法が確立できれば、これまで必要であったRI施設が不要となり、コストの大幅削減や実験者の安全面の観点においてもLLNAよりも優れた試験法になることが大いに期待できる。

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Published: 2025-01-30  

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