Potentiation of antifungal effect of amphotericin B by squalene, an intermediate for sterol biosynthesis.
The antifungal effect of a polyene antibiotic amphotericin B (AMB) was almost completely abrogated by exogenous addition of 0.1 microgram/ml ergosterol in the medium. The cytocidal effect of AMB on Saccharomyces cerevisiae was synergistically enhanced when cultured for more than 4 hours with squalene, an obligatory intermediate molecule for sterol formation. However, we could not find significant increase in cellular level of ergosterol content in the yeast cells fed with squalene.
D000666:Amphotericin B / Q000494:pharmacology*; D004357:Drug Synergism; D004875:Ergosterol / Q000032:analysis; D012441:Saccharomyces cerevisiae / Q000032:analysis / Q000187:drug effects / Q000378:metabolism; D013185:Squalene / Q000494:pharmacology*; D013261:Sterols / Q000096:biosynthesis*
D013261:Sterols; D013185:Squalene; D000666:Amphotericin B; D004875:Ergosterol