Yano T, Aoyagi A, Kozuma S, Kawamura Y, Tanaka I, Suzuki Y, Takamatsu Y, Takatsu T, Inukai M. Pleofungins, novel inositol phosphorylceramide synthase inhibitors, from Phoma sp. SANK 13899. I. Taxonomy, fermentation, isolation, and biological activities.
J Antibiot (Tokyo) 2007;
60:136-42. [PMID:
17420564 DOI:
10.1038/ja.2007.13]
[Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
In the course of a screening for inositol phosphorylceramide (IPC) synthase inhibitors, the novel inhibitors pleofungins A, B, C, and D were found in a mycelial extract of a fungus, Phoma sp. SANK13899. Purification was performed by 50% methanol and ethyl acetate extraction, reversed phase open-column chromatography, and HPLC separations. Pleofungin A inhibited the IPC synthase of Saccharomyces cerevisiae and Aspergillus fumigatus at IC(50) values of 16 and 1.0 ng/ml, respectively. The inhibitor also suppressed the growth of Candida albicans, Cryptococcus neoformans, and A. fumigatus at MIC values of 2.0, 0.3, and 0.5 mug/ml, respectively. These biological properties indicate that pleofungins belong to a novel class of IPC synthase inhibitors efficacious against A. fumigatus.
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