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2023 Fiscal Year Final Research Report

Search for antifungal lead compounds from mycoparasitic fungi

Research Project

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Project/Area Number 21K05293
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 37020:Chemistry and chemical methodology of biomolecules-related
Research InstitutionKitasato University

Principal Investigator

Watanabe Yoshihiro  北里大学, 感染制御科学府, 特任助手 (70823475)

Project Period (FY) 2021-04-01 – 2024-03-31
Keywords菌寄生菌 / 抗真菌 / Aspergillus / Candida auris / Hypomyces / microED
Outline of Final Research Achievements

We screened microbial culture broth, containg mycoparasitic fungi, for antifungal activity against Aspergillus fumigatus and Candida auris, the causative fungi of deep-seated mycosis. A new decalin compound (named hakhybotrol) was found in the culture medium of TT21014 strain and a new compound containing tyrosine residues (named N-demetyltyroscherine) was found in FKJ-0499 strain, respectively. Two new compounds with lactones and a new cyclic depsipeptide were also found from two other filamentous fungi. These compounds showed strong antifungal activity against existing drug-resistant strains.

Free Research Field

天然物化学

Academic Significance and Societal Importance of the Research Achievements

本研究で見出された抗真菌活性物質は共同研究中の企業と開発を進めていくことで新たな抗真菌薬の開発につながることが期待される。また、研究所内のアスペルギルス・フミガタスやカンジダ・アウリス以外の抗真菌活性評価も実施しており、クリプトコッカスなどの他の深在性真菌症や農業病害真菌に対して良い活性を示したものは抗真菌薬のみならず農薬開発のシード化合物として開発が進むことも期待される。
また、菌寄生菌類のこれまでに報告のなかった宿主の真菌に寄生する際、今回発見した化合物を宿主への攻撃に用いていることも示唆され、自然現象の解明にも繋がると期待される。

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Published: 2025-01-30  

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