• Title/Summary/Keyword: tyrosinase protein expression

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Moderating Effects of Skin Hyperpigmentation from Lycii fructus and Lycii folium Extracts (구기자 및 구기엽 추출물의 피부과색소 조절효과)

  • Kim, Dong-Hee;Lee, Soo-Yeon;Kim, Nam-Kyung;Youn, Bo-Kyung;Jung, Da-Som;Choi, Eun-Young;Hong, So-Ri;Yoon, Ji-Young;Kang, Myung-Hwa;Lee, Jin-Young
    • Journal of Applied Biological Chemistry
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    • v.54 no.4
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    • pp.270-278
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    • 2011
  • The objective of the present study was to evaluate the skin whitening effect of the extracts, Lycii fructus (LF), Dry-L. foilum (DLF) and Fresh-L. folium (FLF). Tyrosinase inhibition activities was 44% in DLF ethanol extracts at a $500{\mu}g/mL$. When the tyrosinase activities in B16F10 murine melanoma cell were tested, the activities in DLF ethanol extracts was 14% at a $50{\mu}g/mL$ concentration. The protein expression of microphthalmia-associated transcription factor, tyrosinase related protein 1 (TRP-1), TRP-2, and tyrosinase, which are all melanin related factors, showed that LF, DLF and FLF extracts inhibited the protein bio-synthesis in B16F10 melanoma cell. Especially the DLF extract showed greater decrease of protein expressions. Results indicate that the DLF extract tested in the present study had skin whitening activity and can be used as a function a ingredients for food and cosmetic compositions.

Inhibitory effects of Thalictrum rochebrunianum var. grandisepalum on tyrosinase in IBMX-induced B16F10 melanoma cells

  • Jang, Tae-Won;Choi, Ji-Soo;Mun, Jeong-Yun;Im, Jong-Yun;Nam, Su-Hwan;Kim, Do-Wan;Lee, Seung-Hyun;Park, Jae-Ho
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2019.04a
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    • pp.116-116
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    • 2019
  • Thalictrum rochebrunianum var. grandisepalum (TRG) is a Korean endemic plant, and it is widely used for edible, medicinal, landscape materials. In this study, we examined the protein and mRNA expression levels of MITF, tyrosinase, TRP-1 and TRP-2 by TRG extract (TRGE) in IBMX-treated melanocytes to evaluate the possibility of using TRG as a whitening material. IBMX were reported as melanin synthesis enhancers. It could increase intracellular melanin synthesis by activation of the microphthalmia-associated transcription factor (MITF) signaling pathway. TRGE did not show cytotoxicity at concentrations below $100{\mu}g/ml$ in B16F10 cells. TREG dose-dependently inhibited protein and mRNA levels of MITF, tyrosinase, TRP-1 and TRP-2. Therefore, we suggest that TRGE is an important natural resource for cosmetic raw materials for whitening function.

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Effect on Melanogenic Protein Expression of Acanthoic Acid isolated from Acanthopanax koreanum in Murine B16 Melanoma

  • Ham, Young-Min;Park, Soo-Yeong;Kim, Kil-Nam;Oh, Dae-Ju;Yoon, Weon-Jong
    • Proceedings of the Plant Resources Society of Korea Conference
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    • 2011.10a
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    • pp.16-16
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    • 2011
  • Melanogenesis is a well-known physiological response of human skin that may occur because of exposure to ultraviolet light, for genetic reasons, or due to other causes. In our effectors to find new skin lightening agents, acanthoic acid (AA) was investigated for its ability to inhibit melanogenesis. The effects of AA isolated from A.koreanumun the expression of $\alpha$-MSH-induced melanogenic factors (tyrosinase, tyrosinase related protein (TRP)-1, TRP-2 and MITF (microphthalmla-associated transcriptional factor)) were investigated in murine B16F10 melanoma cells. The results indicate that AA was an effective inhibitor of melanogenesis in B16F10 cells. To elucidate the mechanism of the effect of AA on melanogenesis, we performed Western blotting for melanogenic proteins. AA inhibited melanogenic factors (tyrosinase, TRP-1, TRP-2) expressions. In this study, we also confirmed that AA decreased the protein level of MITF proteins, which would lead to a decrease of tyrosinase and related genes in B16F10 melanoma cells. In order to apply AA to the human skin, the cytotoxic effects of the AA were determined by MTT assays using human keratinocyte HaCaT cells. Based on these results, we suggest that AA be considered possible anti-melanogenic agent and might be effective against hyperpigmentation disorders for the topical application.

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Studies on Anti-Inflammatory and Anti-Melanogenic Effect of Grape Fruit Stem Extract (포도송이가지 추출물의 항염증 및 미백효능에 대한 연구)

  • Choi, Anna;Lee, Hyun-Seo;Kim, Jang Ho;Cho, Byoung Ok;Shin, Jae Young;Jeong, Seung-Il;Jang, Seon Il
    • The Korea Journal of Herbology
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    • v.32 no.3
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    • pp.71-78
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    • 2017
  • Objectives : The various grape extracts derived from grape pulp, seed and skin, containing various types of polyphenols and flavonoids, have been known to have anti-inflammatory, antioxidant and improve cardiovascular condition as well as sun's damaging effects. However, there have been rare reports of various beneficial effects of grape fruit stem extract (GFSE), one of the waste products of grapes. We investigated anti-inflammatory and melanogenesis inhibitory effects of GFSE. Methods : One-hundred gram of grape fruit stem was extracted with 80% ethanol at room temperature for 3 days. After filtration, the ethanol was removed using vacuum evaporator, then lyophilized to obtain the dry extract which was stored at $-20^{\circ}C$ until used. NO levels were measured by using Greiss reagent. Prostaglandin $E_2$ ($PGE_2$) production was measured by ELISA assay. The expression levels of iNOS, COX-2, TRP-1 and TRP-2 were evaluated by western blot analysis. Results : GFSE reduced the level of nitric oxide and prostaglandin $E_2$ ($PGE_2$) production in a dose-dependent manner, compared to control. Expressions of cyclooxygenase-2 (COX-2) and inducible nitric oxide synthase (iNOS) protein were also effectively inhibited by the GFSE. In a tyrosinase inhibitory activity, GFSE significantly reduced the tyrosinase activity and melanin content in a dose dependent manner, compared to control. GFSE also decreased the expression of tyrosinase related protein-1 (TRP-1) and tyrosinase related protein-2 (TRP-2), known as a melanocyte-specific gene product involved in melanin synthesis. Conclusions : Therefore, these results indicated that GFSE had powerful anti-inflammatory and anti-melanogenic effects.

Anti-melanogenic effect of Eruca sativa extract (루꼴라(Eruca sativa) 추출물의 멜라닌 생성 저해 효과)

  • Kim, Hyun-Soo
    • Food Science and Preservation
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    • v.23 no.1
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    • pp.74-79
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    • 2016
  • Eruca sativa (known as rocket plant) is a member of the Brassicaceae, which is considered an important chemo-preventive plant family. Although Eruca sativa has positive biological effects such as antioxidant and renal protective activities, the effect of the Eruca sativa extract as a therapeutic agent for skin whitening has not been reported. In this study, we investigated the applicability of the extract of Eruca sativa as a functional materials by examining the its physiological activities. The Eruca sativa extract showed low cytotoxicity against murine melanoma B16F10 cells. At concentrations (below 100 mg/L) that showed none or little cytotoxicity, the Eruca sativa extract showed high DPPH radical scavenging activity (ID50, 17.60 mg/L). In addition, the Eruca sativa extract inhibited tyrosinase activity ($ID_{50}$, 132.54 mg/L) and decreased melanin content ($ID_{50}$, 158.90 mg/L). Finally, the treatment with the Eruca sativa extract suppressed the protein expression of tyrosinase in a concentration-dependent manner. These findings suggested that the Eruca sativa extract inhibited melanin synthesis by not only suppressing intracellular tyrosinase expression but also directly inhibiting tyrosinase activity. Therefore, these results indicate that the Eruca sativa extract may be an effective material for functional cosmetics such as skin whitening materials.

Inhibitory Effects of Marine Natural Products on Melanogenesis in B16 Melanoma Cells (B16 멜라닌 세포에서 해양소재 추출물의 멜라닌 생성 저해 효과)

  • Lee, Chan;Jang, Jung-Hee;Ahn, Eun-Mi;Park, Chan-Ik
    • The Korea Journal of Herbology
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    • v.27 no.4
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    • pp.73-80
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    • 2012
  • Objectives : Under normal condition melanin protects the skin from extracellular stimuli including ultraviolet (UV)-induced oxidative skin damages, but excess production and accumulation of melanin can induce hyperpigmentation causing esthetic problems. Therefore, in this study we tried to search for natural skin whitening materials from marine natural resources. Methods : Water and ethanol extracts of marine natural resources were prepared from Porphyra thalli (PT), Laminariae thallus (LT), Ostreae concha (OC), Sargassum thallus (ST), Undaria thallus (UT), Codium thalli (CT), Enteromorpha thalli (ET), Syngnathoides biaculeatus (SB), and Hippocampus coronatus (Hc). Their effects against UVB and ${\alpha}$-melanocyte stimulating hormone (${\alpha}$-MSH)-induced melanogenesis were investigated based on melanin formation in B16 mouse melanoma cells. The mRNA and protein expression of enzymes involved in the melanogenic process were further examined by reverse transcriptase-polymerase chain reaction (RT-PCR) and Western blot analysis, respectively. Results : Water extract of Ostreae concha (OCW/E) effectively inhibited UVB and ${\alpha}$-MSH-induced melanin production in B16 melanocytes, which seemed to be mediated by inhibition of mRNA expression of tyrosinase and tyrosinase-related protein 1 (TRP-1). In another experiment, ethanol extracts from Porphyra thalli (PTE/E), Laminariae thallus (LTE/E), Sargassum thallus (STE/E), Undaria thallus (UTE/E), Codium thalli (CTE/E), Syngnathoides biaculeatus (SBE/E), and Hippocampus coronatus (HcE/E) significantly suppressed UVB and ${\alpha}$-MSH-induced melanin formation. Furthermore, ethylacetate fraction isolated form LTE/E (LTE/EEt) decreased UVB and ${\alpha}$-MSH-elevated extracellular melanin levels via inhibition of tyrosinase protein expression. Conclutions : These results suggest that marine natural resources such as Porphyra thalli, Laminariae thallus, Ostreae concha, Sargassum thallus, Undaria thallus, Codium thalli, Syngnathoides biaculeatus and Hippocampus coronatus have anti-melanogenic effects, thereby exhibiting high potentials to be utilized as one of the ingredients for the development of new whitening functional cosmetics.

Evaluation on the Whitening Effect of Nypa fruticans wurmb Extracts (해죽순 추출물의 미백활성 평가)

  • Kim, Il-Chool
    • Journal of the Korean Applied Science and Technology
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    • v.39 no.3
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    • pp.462-470
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    • 2022
  • The purpose of this study was to investigate the role of the Nypa fruticans extracts as a cosmetic additive. The tyrosinase inhibitory effects showed 52.0% at 1,000 ㎍/mL concentration. A cell viability test, measured on melanoma cell (B16F10) hot water extract of nypa fruticans showed 84.8% at 100 ㎍/mL concentration. The protein expression inhibitory effects of nypa fruticans extracts were measured by western blot at 25, 50, 100 ㎍/mL concentration and the β-actin. Results showed that the expression inhibition rates of the MITF, TRP-1, TRP-2, tyrosinase protein were decreased by 70.7%, 83.3%, 45.7%, 45.9% at 100 ㎍/mL concentration, respectively. It was concluded that nypa fruticans extracts had the whitening effects and thus could be applied for cosmetics as a natural ingredient.

Whitening Activity of Sambucus Sieboldiana Var. Pendula (Nakai) Extract (말오줌나무 추출물의 미백활성 검증)

  • Yoo, Dan-Hee;Kim, Jin-Tae;Oh, Min-Jeong;Yeom, Hyeon-Ji;Lee, Jin-Young
    • Journal of Life Science
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    • v.29 no.3
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    • pp.279-286
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    • 2019
  • This study evaluated the anti-oxidant and whitening effects of a 70% ethanol extract of the Sambucus sieboldiana var. pendula (Nakai) (SS). At $1,000{\mu}g/ml$ concentration, the electron donating ability of this SS extract was found to be 86.21% and the ABTS+ radical scavenging ability was 97.9%. In terms of whitening activity, the tyrosinase inhibitory effect of the extract was 37%, also at $1,000{\mu}g/ml$ concentration. To explore the extractefftoxicity to B16F10 melanoma cells, a 3-[4,5-dimethyl-thiazol-2-yl]-2,5-diphenyl-tetrazoliumbromide assay was performed. Results showed 90% or more cells remained viable at $100{\mu}g/ml$ concentration. A Western blot of the SS extract was used to measure microphthalmia-associated transcription factor (MITF), tyrosinase-related protein-1 (TRP-1), tyrosinase relate protein-2 (TRP-2), and the tyrosinase protein expression inhibitory effect at 25, 50, $100{\mu}g/ml$ concentrations; ${\beta}-actin$ was used as a positive control. Consequently, the MITF, TRP-1, TRP-2, and the tyrosinase protein expression inhibitory effect were seen to decrease by 34.5%, 45.6%, 58.4%, and 79.6%, respectively, at $100{\mu}g/ml$ concentration. These were also then measured by reverse transcription-polymerase chain reaction at 25, 50, $100{\mu}g/ml$ concentrations with GAPDH as a positive control. As a result, the SS extract was seen to decrease MITF, TRP-1, TRP-2, and the tyrosinase protein expression inhibitory effect by 85.4%, 67.5%, 85.2%, 67.1%, respectively at the $100{\mu}g/ml$ concentration. We therefore confirmed the possibility of Sambucus sieboldiana var. pendula (Nakai) extract as a whitening material.

The Inhibition of Melanogenesis Via the PKA and ERK Signaling Pathways by Chlamydomonas reinhardtii Extract in B16F10 Melanoma Cells and Artificial Human Skin Equivalents

  • Lee, Ayeong;Kim, Ji Yea;Heo, Jina;Cho, Dae-Hyun;Kim, Hee-Sik;An, In-Sook;An, Sungkwan;Bae, Seunghee
    • Journal of Microbiology and Biotechnology
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    • v.28 no.12
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    • pp.2121-2132
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    • 2018
  • Abnormal melanin synthesis results in several hyperpigmentary disorders such as freckles, melanoderma, age spots, and other related conditions. In this study, we investigated the anti-melanogenic effects of an extract from the microalgae Chlamydomonas reinhardtii (CE) and potential mechanisms responsible for its inhibitory effect in B16F10, normal human epidermal melanocyte cells, and human skin-equivalent models. The CE extract showed significant dose-dependent inhibitory effects on ${\alpha}$-melanocyte-stimulating, hormone-induced melanin synthesis in cells. Additionally, the CE extract exhibited suppressive effects on the mRNA and protein expression of microphthalmia-associated transcription factor, tyrosinase, tyrosinase-related protein-1, and tyrosinase-related protein-2. The CE extract also inhibited the phosphorylation of protein kinase A and extracellular signal-related kinase, which function as upstream regulators of melanogenesis. Using a three-dimensional, reconstructed pigmented epidermis model, the CE-mediated, anti-pigmentation effects were confirmed by Fontana-Masson staining and melanin content assays. Taken together, CE extract can be used as an anti-pigmentation agent.

Effect of Rubus crataefifolius Leaf Extract on Melanin Synthesis (산딸기 잎 추출물이 멜라닌 생성에 미치는 영향)

  • Kim, Mee-Kyung;Kim, Dae-Yong
    • Journal of the Korean Applied Science and Technology
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    • v.38 no.3
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    • pp.883-890
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    • 2021
  • In this study, we investigated the melanogenesis inhibitory effects of Rubus crataefifolius Leaf Extract (RCLE) in B16F10 melanoma cells. We examined the effects of RCLE on the melanin contents and tyrosinase activity, as well as the protein expression levels of the melanogenic enzymes TRP-1, TRP-2, and MITF in α-MSH -stimulated B16F10 melanoma cells. RCLE effectively inhibited tyrosinase activity and melanogenesis, suppressed the phosphorylation of PKA and CREB, and expression of MIT involved in the melanogenesis pathway, and down-regulated expression of melanogenesis related proteins. These result suggest that RCLE inhibited α-MSH-stimulated melanin synthesis by suppressing MITF expression. Therefore, our study suggests that RCLE has potential as a safe treatment for excessive pigmentation or as a natural ingredient in cosmetics.