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7-Oxostaurosporine Selectively Inhibits the Mycelial Form of Candida albicans  

Hwang, Eui-Il (Bio Research Group, KT&G Central Research Institute)
Yun, Bong-Sik (Laboratory of Cellular Function Modulator, Korea Research Institute of Bioscience and Biotechnology)
Lee, Sang-Han (Laboratory of Cellular Function Modulator, Korea Research Institute of Bioscience and Biotechnology)
Kim, Soo-Kie (Department of Microbiology, Wonju College of Medicine, IFBB, Yonsei University)
Lim, Se-Jin (College of Pharmacy, Dongduk Women's University)
Kim, Sung-Uk (Laboratory of Cellular Function Modulator, Korea Research Institute of Bioscience and Biotechnology)
Publication Information
Journal of Microbiology and Biotechnology / v.14, no.5, 2004 , pp. 1067-1070 More about this Journal
Abstract
In the course of screening for specific inhibitors against the mycelial form of Candida albicans from natural resources, we have isolated and identified A6792-1 from Streptomyces sp. A6792 by using several chromatographies. By spectral analyses, this compound was determined as 7-oxostaurosporine, having a structure of staurosporine aglycon noiety. 7-Oxostaurosporine exhibited a selective growth inhibitory activity against the mycelial form of Candida spp. up to $100\mu\textrm{g}/disc$ in bioassay. It also exhibited a specific antifungal activity against the mycelial form of Candida spp. including C. krusei, C. albicans, C. tropicalis, and C. lusitaniae with MICs ranging from 3.1 to $25\mu\textrm{g}/ml$ 7-Oxostaurosporine demonstrated no in vivo toxicity in SPF ICR mice. Therefore, this compound may have a considerable potential as an antifungal agent based on the preferential inhibition against growth of the mycelial form of Candida spp., dimorphic fungi.
Keywords
Candida albicans; morphological transition; 7-oxostaurosporine;
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