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)
  • Published : 2004.10.01

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.

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References

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