여정자 추출물의 Tyrosinase 및 MITF 발현 억제 효과
Inhibitory Effect of Fructus Ligustri Lucidi on Tyrosinase and MITF Expressions
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초록
The purpose of this study was to investigate the mechanism of Hexane extract of Fructus Ligustri Lucidi (HFLL)-induced regulation of melanogenesis. An apparent down-regulatory effect of tyrosinase activity was observed when B16F10 cells were incubated with HFLL. Interestingly, HFLL did not inhibit the catalytic activity of cell-free tyrosinase from B16F10 cells, whereas kojic acid directly inhibited tyrosinase activity. Regarding protein levels of melanogenic enzymes, the amounts of tyrosinase and tyrosinase-related protein 1 (TRP-1) were decreased by HFLL, while the amount of tyrosinase-related protein 2 (TRP-2) slightly was reduced after incubation with HFLL. Treatment with HFLL was found to down-regulate microphthalmia-associated transcription factor (MITF). These results suggest that HFLL is an effective inhibitor of pigmentation caused by down regulation via MITF, tyrosinase, and TRP-1 expressions.
Abstract
The purpose of this study was to investigate the mechanism of Hexane extract of Fructus Ligustri Lucidi (HFLL)-induced regulation of melanogenesis. An apparent down-regulatory effect of tyrosinase activity was observed when B16F10 cells were incubated with HFLL. Interestingly, HFLL did not inhibit the catalytic activity of cell-free tyrosinase from B16F10 cells, whereas kojic acid directly inhibited tyrosinase activity. Regarding protein levels of melanogenic enzymes, the amounts of tyrosinase and tyrosinase-related protein 1 (TRP-1) were decreased by HFLL, while the amount of tyrosinase-related protein 2 (TRP-2) slightly was reduced after incubation with HFLL. Treatment with HFLL was found to down-regulate microphthalmia-associated transcription factor (MITF). These results suggest that HFLL is an effective inhibitor of pigmentation caused by down regulation via MITF, tyrosinase, and TRP-1 expressions.
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