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    초록·키워드

    The green marine algae, Capsosiphon fulvescens (CF) is a food supplement cultivated in south coast of Southern Korea. The purpose of this study was to investigate the mechanism of CF-induced hypopigmentation. The present study was designed to determine the effect of CF extracton melanogenesis in B16 cells, particularly its specific effects on tyrosinase and tyrosinase-related protein 2 (TRP-2). We measured melanin contents and analyzed melanosome associated protein levels using Western blot and Reverse transcription-polymerase chian reaction (RT-PCR) analysis. CF extract markedly inhibited melanin synthesis and tyrosinase activity. In addition, cellular dendricity was slightly decreased by CF extract. In further experiments, CF extract significantly reduced the protein levels of tyrosinase and TRP-2 in B16 cells. RT-PCR analysis revealed that tyrosinase and TRP-2 mRNA levels were unaffected by CF treatment. Therefore, these results suggest that hypopigmentary effect of CF was due to post-translational degradationof tyrosinase and TRP-2.

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