Filipin II is a polyene and an active component of the polyene antibiotic filipin complex . [1] It has broad-spectrum antifungal activity, reducing growth of various fungi, including B. dermatitidis, C. neoformans, and H. capsulatum (MICs = 1-10 μg/ml). Filipin II inhibits ADP-stimulated respiration in rat liver mitochondria when used at a concentration of 3.5 mg/ml. [2] It also induces hemolysis of liposomes in a cholesterol-independent manner (IC50 = 0.5 μg/ml).[3]
Reference:
[1]. Bergy, M.E., and Eble, T.E. The filipin complex. Biochemistry 7(2), 653-659 (1968).
[2]. Balcavage, W.X., Beale, M., Chasen, B., et al. Effect of filipin on rat-liver and yeast mitochondria. Biochim. Biophys. Acta. 162(4), 525-532 (1968).
[3]. Sessa, G., and Weissmann, G. Effects of four components of the polyene antibiotic, filipin, on phospholipid spherules (liposomes) and erythrocytes. J. Biol. Chem. 243(16), 4364-4371 (1968).