Aureobasidins as New Inhibitors of P-Glycoprotein in Multidrug Resistant Tumor Cells.
- 1 January 1998
- journal article
- Published by Japan Antibiotics Research Association in The Journal of Antibiotics
- Vol. 51 (3) , 353-358
- https://doi.org/10.7164/antibiotics.51.353
Abstract
Cyclic depsipeptide antibiotic aureobasidin A (AbA) and its analogs were tested for the inhibitory activity of P-glycoprotein in multidrug resistant cancer cells as well as for the antifungal activity. Some analogs with lower antifungal activity than AbA showed higher inhibition of P-glycoproteins indicating difference of the structure-activity relationships between the two activities. Among AbA analogs tested, [D-β-hydroxy-methylvalyl9]-AbA newly prepared by chemical synthesis, which had much lower antifungal activity than AbA, showed 10-fold higher inhibitory activity of P-glycoprotein than AbA.Keywords
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