• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.37 no.3
• /
• pp.211-218
• /
• 2011

Effects of Kenpaullone, a specific inhibitor of GSK3${\beta}$, on melanin synthesis in B16 melanoma cells and human melanocytes were investigated. Kenpaullone showed a melanogenesis stimulation activity in a concentrationdependent manner in murine B16 melanoma cells and human melanocytes without any significant effects on cell proliferation. Tyrosinase activity was increased 48 h after treatment of B16 cells with Kenpaullone. The protein expression level of tyrosinase was dose-dependently enhanced after the treatment with Kenpaullone. At the same time, the expression level of tyrosinase mRNA was also increased after addition of Kenpaullone. The stimulatory effect of Kenpaullone mainly resulted from increased expression of tyrosinase. These findings suggest that the application of GSK3${\beta}$ inhibitors may be a potential therapeutic agent for the treatment of hypopigmentation disorder.

• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.43 no.3
• /
• pp.231-237
• /
• 2017

This study was performed to cytotoxicity, tyrosinase inhibition activity, intracellular melanin contents to verify the whitening effect of fraction from Glycine soja Siebold et Zucc. (G. soja). Using western blotting, tyrosinase expression in B16F10 melanoma cells and expression levels of tyrosinase related protein-1 (TRP-1) and protein-2 (TRP-2) were examined. As a result, all of the fractions showed a high cell viability over 82% at the concentrations of 0.125, 0.25, 0.5, 2.0 mg/mL. When the whitening effects of fractions from G. soja were tested using B16F10 melanoma cells treated with the ${\alpha}$-melanocyte stimulating hormone (${\alpha}-MSH$), the EtOAc fractions inhibited tyrosinase and melanogenesis effectively. The result of protein expression measurement using western blot showed that TRP-1, TRP-2 and tyrosinase protein expression in B16F10 melanoma cells treated with extracts decreased. Therefore, it is concluded that the fractions from G. soja have whitening effect by inhibiting protein related melanogenesis.

• Journal of Life Science
• /
• v.23 no.11
• /
• pp.1336-1341
• /
• 2013

The purpose of this study was to research the whitening effects of the extract from Angelica gigas Nakai, which is one of the most widely used herbal medicines in Asia. For whitening effects, the tyrosinase inhibition effect of the A. gigas Nakai extract was shown to be greater than 70% at 1,000 ${\mu}g/ml$ concentration. The result of measuring the cell toxicity effect of the extract from A. gigas Nakai on melanoma cells showed 99% toxicity at 500 ${\mu}g/ml$ concentration. The microphthalmia-associated transcription factor (MITF), tyrosinase related protein-1 (TRP-1), tyrosinase related protein-2 (TRP-2), and tyrosinase mRNA expression inhibitory effect by reverse transcription-PCR of the extract from A. gigas Nakai were decreased by 85.7%, 123.9%, 68.8%, and 208%, respectively, at 50 ${\mu}g/ml$ concentration. All these findings could verify that extract from A. gigas Nakai could have an effect on whitening. Moreover, extract from A. gigas Nakai has great potential as a cosmetic ingredient.

• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.37 no.4
• /
• pp.319-326
• /
• 2011

In order to investigate the potential of Nigella sativa (N. sativa) oil as an active ingredient for whitening cosmetics, we prepared N. sativa oil. We measured its inhibitory effects on mushroom tyrosinase activity, cellular tyrosinase activity, and melanin synthesis inhibitory activity in B16 melanoma cells. N. sativa oil and its components showed inhibitory activity against mushroom tyrosinase and melanin synthesis. In a melanin synthesis inhibition assay using mouse B16-F10 melanoma cell, it reduced melanin production up to 86 % at a concentration of 10 mg/mL without cytotoxicity. In the study on the melanogenic protein expressions by using RT-PCR and Western blot, N. sativa oil and its components inhibited expression of tyrosinase protein, which is a well-known key protein on melanogenesis, and tyrosinase expression was gradually decreased in a dose-dependent manner. Therefore, this result suggests that N. sativa oil could be used as an active ingredient for whitening cosmetics.

• Journal of Life Science
• /
• v.34 no.2
• /
• pp.105-112
• /
• 2024

In this study, the various whitening activities of Inonotus obliquus were assessed for potential use as functional cosmetic materials. When measuring electron donating ability to confirm the antioxidant ability of I. obliquus extract, increased activity was observed as the concentration increased, and it was found an outstanding antioxidant capacity of 82.1% at a 1,000 ㎍/ml concentration. Also, the tyrosinase inhibitory effect, related to a whitening effect, was found to have inhibitory activity that increased in a concentration-dependent manner. The results of verifying the viability of melanoma cells (B16F10) using an MTT assay showed cell viability of more than 80% at concentrations below 100 ㎍/ml. Therefore, cell-related experiments were conducted at 25, 50, and 100 ㎍/ml concentrations. By measuring protein expression related to melanin synthesis via treating B16F10 cells with I. obliquus extract, it was confirmed that protein expression was inhibited in all factors, depending on the concentration. TRP-1 and MITF appeared by 40.1% and 64.2% amount of expression, respectively, at 100 ㎍/ml concentrations, and tyrosinase and TRP-2 were verified as having better protein expression inhibition than arbutin. In measuring mRNA expression related to melanin synthesis by treating B16F10 cells with I. obliquus extract, it was confirmed that mRNA expression was suppressed as the concentration increased. Accordingly, it was confirmed that I. obliquus extract has excellent whitening activity and could be used as a cosmetic material.

• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.32 no.3 s.58
• /
• pp.153-160
• /
• 2006

We synthesized 2',4'-dimethoxyflavone and investigated the effects on melanogenesis. To determine the effects as a whitening agent, various in uitro tests were performed such as free radical scavenging activity, melanin assay, tyrosinase activity and expression of tyrosinase, TRP-1 and TRP-2 (western blot and RT-PCR) in Bl6 melanoma cells. 2',4'-Dimethoxyflavone showed neither free radical scavenging activities against 1,1- diphenyl -2-picrylhydrazvl (DPPH) radical and inhibition of mushroom tyrosinase activity, 2',4'-dimethoxyflavone significantly inhibited melanin production in B16 melanoma cells. 2',4'-Dimethoxyflavone treatment (48h) suppressed the biosynthesis of melanin up to 27% at $5{\mu}g/mL$ and reduced tyrosinase activity up to 20% at $5{\mu}g/mL$ in B16 melanoma cells. 2',4'-Dimethoxyflavone was also able to significantly inhibit tyrosinase and TRP-1 expression in protein and mRNA level. These results suggest that 2',4'-dimethoxyflavone inhibits melanin biosynthesis at the level of enzyme activity and protein mRNA expression B16 melanoma cells. Therefore, 2',4'-dimethoxyflavone may be useful as a new whitening agent in cosmetics.

• Journal of Applied Biological Chemistry
• /
• v.53 no.3
• /
• pp.154-161
• /
• 2010

The solvent extracts of Prunus persica Flos were investigated for the activities of whitening and anti-wrinkle effects to apply as a functional ingredient for cosmetic products. The tyrosinase inhibitory effect, which is related to skin-whitening, was 54.0, 58.3% in P. persica Flos (PPW, PPE) at 1,000 ppm. In addition, the ethanol extract of P. persica Flos (PPE) showed a potent tyrosinase inhibitory activity in the test using melanoma cell lines resulting in 40.0% inhibition at 100ppm. Furthermore, the aqueous acetone extract from the flower of P. persica Flos was found to inhibit elastase, which was more effective than ascorbic acid at 1,000 ppm. The inhibition of melanin synthesis by P. persica Flos extract (PPE) was about 56.5% at 100 ppm concentration. When compared to other extraction methods, the ethanol extract showed more potent whitening activity. For anti-wrinkle effect, the elastase inhibition activity of P. persica Flos extract (PPA) was 57.0% and higher than that of ascorbic acid at 1,000 ppm. The collagenase inhibition activity of P. persica Flos extract (PPA) was about 48.0% at 1,000 ppm. Collagen synthesis in fibroblast cell by P. persica Flos extracts (PPA) was about 41.0% at 100 ppm and its acetone extract was the best showing antiwrinkle activities. All these findings suggested that P. persica Flos has a great potential as a cosmeceutical ingredient with a whitening and anti-wrinkle effect.

• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.41 no.1
• /
• pp.21-26
• /
• 2015

The purpose of this study is to identify the whitening effect of Androsace umbellata extract. To discover the anti-pigmentation effective, we investigated Androsace umbellata extract on tyrosinase and melanogenesis inhibition. As results, it reduced tyrosinase activity and melanin contents in B16F1 melanoma cells in a dose-dependent manner with decreased to about 32% at a concentration of $25{\mu}g/mL$. To reveal how it works in inner-cellular level, we performed Western blot method. We found out that it also inhibited the protein expression in tyrosinase, tyrosinase related protein 1 (TRP-1), and microphthalmia associated transcription factor (MITF) in melanocytes. Therefore, we successfully identified the whitening effect of Androsace umbellata extract, and this finding suggested that Androsace umbellata extract is a considerable potent cosmetics ingredient for whitening. Based on this, we anticipated further researches about Androsace umbellata extract for gene levels and additional mechanisms to develop not only for functional cosmetics but for medicines or healthcare food.

• Journal of the Society of Cosmetic Scientists of Korea
• /
• v.43 no.4
• /
• pp.357-364
• /
• 2017

The aim of this study is to investigate the effect of Hovenia dulcis (oriental raisin tree) extract on ganodermanondiol (GN) contents in Ganoderma lucidum (G. lucidum) mycelia. GN has a triterpenoid structure and is one of the major active components of G. lucidum. Furthermore, we previously proved its inhibitory effects on tyrosinase activity and melanin biosynthesis in B16F10 melanoma cells. In this study, we observed significantly increased GN contents in G. lucidum mycelial extracts supplemented with 15% (v/v) oriental raisin tree extract (ORTE) by HPLC analysis. In addition, melanogenesis was significantly inhibited by G. lucidum extract supplemented with 15% ORTE when compared to G. lucidum extract without ORTE supplementation. Furthermore, mycelial growth of G. lucidum was increased by ORTE supplementation in both solid and liquid cultivation. These results suggest that the oriental raisin tree is useful as natural ingredient for increasing GN biosynthesis as well as whitening effect of G. lucidum.

• Journal of the Korean Applied Science and Technology
• /
• v.39 no.3
• /
• pp.417-422
• /
• 2022

We tried to check the antioxidant activity and toxicity of trichosanthis cucumeroidis radix extracts in skin cells, and check the possibility of their use as a functional material that can be effectively used on the skin. Total polyphenol and total flavonoid content, which are indicators of antioxidant activity of trichosanthis cucumeroidis radix extracts, were confirmed, and cytotoxicity was confirmed using Neutral red assay in the skin. As a result of the study, the content of total polyphenols and total flavonoids increased concentration-dependent. High survival rates in fibroblast HDF cells were identified, and cell survival rates were significantly lowered from 5 ㎍/mL in melanocytes B16F10 melanoma cells and inflammation-related macrophages RAW 264.7 cells. He results of this study are believed to be available as basic data for antioxidant activity of trichosanthis cucumeroidis radix extracts and skin cells.