Fisheries and Aquatic Sciences (Nov 2018)
Inhibitory effect of Fucofuroeckol-A from Eisenia bicyclis on tyrosinase activity and melanin biosynthesis in murine melanoma B16F10 cells
Abstract
Abstract Background The aim of this study was to investigate the in vitro inhibitory effects of Fucofuroeckol-A isolated from Eisenia bicyclis against tyrosinase activity and 3-isobutyl-1-methylxanthine (IBMX)-induced melanin biosynthesis in B16F10 melanoma cells. Result Among the ethanolic (EtOH) extract of E. bicyclis and its organic solvent fractions, the ethyl acetate (EtOAc) soluble fraction showed a noticeable inhibitory effect on mushroom tyrosinase with an IC50 value of 37.6 ± 0.1 μg/mL. Repeated column chromatography of the active EtOAc fraction resulted in the isolation of Fucofuroeckol-A. It evidenced more potent tyrosinase inhibitory effect with an IC50 value of 11.4 ± 1.4 μM than arbutin (IC50 = 1076.6 ± 44.3 μM), which was used as a positive control. Lineweaver-Burk plots suggest that Fucofuroeckol-A plays as a noncompetitive inhibitor against tyrosinase. Furthermore, we have evaluated the inhibitory effects of Fucofuroeckol-A on IBMX-induced melanin formation in B16F10 melanoma cells. Fucofuroeckol-A (12.5–100 μM) exhibited a significant inhibition of melanin production in the melanoma cells. Conclusion In the present study, we suggested that Fucofuroeckol-A might prove possibility as a novel inhibitor of melanin biosynthesis in cosmetic applications.
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