Abstract
Streptomyces sp. WK-5344, a soil isolate, was found to produce structurally related inhibitors of cholesteryl ester transfer protein (CETP). New active compounds, designated ferroverdins B and C, were isolated along with known ferroverdin A from the fermentation broth by solvent extraction, ODS column chromatography and silica gel column chromatography. All ferroverdins showed a dose-dependent inhibitory activity against human CETP. The IC50 values were 21, 0.62 and 2.2 microM for ferroverdins A, B and C, respectively, indicating that ferroverdin B is one of the most potent CETP inhibitors of microbial origin.
Publication types
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Research Support, Non-U.S. Gov't
MeSH terms
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Bacteria / drug effects
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Carrier Proteins / antagonists & inhibitors*
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Cholesterol Ester Transfer Proteins
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Dose-Response Relationship, Drug
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Fermentation
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Ferrous Compounds / isolation & purification*
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Ferrous Compounds / pharmacology
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Glycoproteins*
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Humans
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Nitroso Compounds / isolation & purification*
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Nitroso Compounds / pharmacology
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Streptomyces / classification
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Streptomyces / metabolism*
Substances
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CETP protein, human
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Carrier Proteins
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Cholesterol Ester Transfer Proteins
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Ferrous Compounds
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Glycoproteins
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Nitroso Compounds
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ferroverdin B
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ferroverdin C
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ferroverdin