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2023 Fiscal Year Final Research Report

Validation of a functional evaluation method for herbal medicines using transgenic nematodes

Research Project

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Project/Area Number 20K07100
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 47050:Environmental and natural pharmaceutical resources-related
Research InstitutionHiroshima University

Principal Investigator

SUGIMOTO SACHIKO  広島大学, 医系科学研究科(薬), 准教授 (60549012)

Co-Investigator(Kenkyū-buntansha) 山野 喜  広島大学, 医系科学研究科(薬), 助教 (70650597)
Project Period (FY) 2020-04-01 – 2024-03-31
Keywords線虫 / Caenorhabditis elegans / 抗老化
Outline of Final Research Achievements

In order to properly demonstrate the effectiveness and potential of herbal and Kampo medicines, and to guide their effective use, it is crucial to establish solid evidence of their active components and clinical efficacy. As a multicellular organism with multiple organs, C. elegans may be suitable for evaluating the pharmacological effects of extracts like herbal and Kampo medicines, which involve complex interactions of multiple compounds. Therefore, in this study, we used genetically modified C. elegans strains, TJ356 and CL4176, to perform functional evaluations of herbal extracts and to isolate and structurally analyze the active compounds. As a result, we isolated and identified three active compounds from two herbal medicines that showed activity.

Free Research Field

天然物化学

Academic Significance and Societal Importance of the Research Achievements

TJ356を用いた活性試験で得られた化合物(juncusol、juncuenin B)はいずれもイグサ科から単離されているdihydrophenanthrene骨格を有する化合物で、これまでにHeLa細胞やA2780細胞に対する抗腫瘍活性が報告されている。本研究において線虫のDAF-16の核移行を促進する作用が見いだされたが、そのような報告はこれまでになく、これら化合物の持つ新たな生物活性が明らかとした。CL4176を用いた活性評価を指標に十薬からSesamineを単離した。十薬の薬効としてアルツハイマー病予防などは知られていないが、今回の実験結果からそのような作用がある可能性が示唆された。

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Published: 2025-01-30  

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