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A spiroketal antibiotic with antiproliferative activity
Reveromycin A is the major component of a complex of spiroketal antibiotics isolated from Streptomyces sp. It inhibits the mitogenic activity of epidermal growth factor in Balb/MK cells (IC50 = 0.7 µg/ml), displays antiproliferative activity against human KB and K562 tumor cell lines (IC50s = 1.9 and 1.6 µg/ml, respectively), and demonstrates antifungal activity against C. albicans (MIC = 2 µg/ml at pH 3). Reveromycin A also has been shown to inhibit bone resorption by inducing apoptosis in osteoclasts with an IC50 value of 0.7 µM.
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