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A chemogenomic approach to understand the antifungal action of Lichen-derived vulpinic acid.
Journal of Applied Microbiology 2016 December
AIM: To determine uncovered antifungal activity of lichen-derived compound, vulpinic acid, by using chemical-genetic analyses.
METHODS AND RESULTS: Haploinsufficiency and homozygous-profiling assays were performed, revealing that strains lacking GLC7, MET4, RFC2, YAE1 and PRP18 were sensitive to three concentrations (12·5, 25 and 50% of inhibitory concentration) of vulpinic acid and independently validated. To verify inhibition of those genes, cell cycle analysis using flow cytometry was performed and relative expressions were measured. Under vulpinic acid-treated condition, cell cycle was arrested in S and G2/M phases and sensitive strains' relative expressions were significantly lower than the wild type yeast.
CONCLUSIONS: Vulpinic acid mainly affects cell cycle, glycogen metabolism, transcription and translation to fungi.
SIGNIFICANCE AND IMPACT OF THE STUDY: Although lichen-derived compounds are commercially valuable, few studies have determined their modes of action. This study used a chemogenomic approach to gain insight into the mechanisms of one of well-known lichen-derived compound, vulpinic acid.
METHODS AND RESULTS: Haploinsufficiency and homozygous-profiling assays were performed, revealing that strains lacking GLC7, MET4, RFC2, YAE1 and PRP18 were sensitive to three concentrations (12·5, 25 and 50% of inhibitory concentration) of vulpinic acid and independently validated. To verify inhibition of those genes, cell cycle analysis using flow cytometry was performed and relative expressions were measured. Under vulpinic acid-treated condition, cell cycle was arrested in S and G2/M phases and sensitive strains' relative expressions were significantly lower than the wild type yeast.
CONCLUSIONS: Vulpinic acid mainly affects cell cycle, glycogen metabolism, transcription and translation to fungi.
SIGNIFICANCE AND IMPACT OF THE STUDY: Although lichen-derived compounds are commercially valuable, few studies have determined their modes of action. This study used a chemogenomic approach to gain insight into the mechanisms of one of well-known lichen-derived compound, vulpinic acid.
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