Publications by authors named "M Honsho"

Article Synopsis
  • Burnettiene A, an antifungal compound, was re-identified from the FKI-6715 strain using a unique yeast system, showing promise against various pathogenic fungi.
  • Previous studies had only noted antifungal effectiveness against one fungal species, but new findings reveal broad activity against multiple plant pathogenic fungi.
  • The synthesis of 12 derivatives led to the discovery that a methyl ester derivative was 100 times more effective against a specific strain, highlighting burnettiene A's potential as a new fungicidal agent.
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Plasmalogens (Pls) are specialized phospholipids integral to brain health, whose decline due to aging and stress contributes to cognitive impairment and neuroinflammation. This study explores the potential of a novel Pls derivative, KIT-13 (1-O-octadecyl-2-arachidonoyl-sn-glycerol-3-phosphoethanolamine), in mitigating neuroinflammation and enhancing cognition. When administered to mice, KIT-13 exhibited potent memory enhancement attributed to upregulated brain-derived neurotrophic factor (BDNF), a key player in cognitive processes.

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Previously, we successfully introduced laeA gene into a fungal strain in order to significantly increase the production of a bioactive compound, allowing use to discover novel biological activity. To demonstrate the universal applicability of the laeA gene introduction strategy for taping the potential of fungal secondary metabolism, in this present study, we created a library of microorganisms which we had the laeA gene inserted, and from that library we aimed to isolate compounds which are produced at significantly greater quantities compared to the respective wild type strains. From this investigation, we were able to isolate sclerotinin A (1) from Pochonia sp.

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We envisioned that the rumen of Kitasato Yakumo beef cattle would contain unique microorganisms which produce bioactive compounds as their defense response to the external environment. The variety of microorganisms were collected from the feces of Kitasato Yakumo beef cattle. We evaluated the biological activity of the culture broth of the isolated strains, proving the utility of our approach.

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Article Synopsis
  • Researchers discovered burnettiene A (1) as an antimalarial compound from the culture of Flavocillium primulinum, using a new multidrug-sensitive yeast system.
  • The compound was previously identified as an antifungal agent but its antifungal action is limited to one species and its mechanism isn't fully understood.
  • The study demonstrated that burnettiene A exhibits antimalarial activity against both chloroquine-sensitive and resistant strains of Plasmodium falciparum, highlighting a new platform for discovering potential antimalarial drugs.
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