• Title/Summary/Keyword: Melanoma B-16

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Effects of Gamma Irradiation on the Extraction Yield and Whitening Activity of Polysaccharides from Undaria pinnatifida Sporophyll (감마선 조사가 미역귀 조다당의 추출수율 및 미백활성 변화에 미치는 영향)

  • Kim, Da-Mi;Kim, Kyoung-Hee;Sung, Nak-Yun;Jung, Pil-Moon;Kim, Jeong-Soo;Kim, Jae-Kyung;Kim, Jae-Hun;Choi, Jong-Il;Song, Beom-Seok;Lee, Ju-Woon;Kim, Jin-Kyu;Yook, Hong-Sun
    • Journal of the Korean Society of Food Science and Nutrition
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    • v.40 no.5
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    • pp.712-716
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    • 2011
  • We investigated changes in the extraction yield and whitening activity of polysaccharides from Undaria pinnatifida sporophyll due to gamma irradiation. U. pinnatifida sporophyll was gamma-irradiated at doses of 10, 30, 50, 70, and 100 kGy, then extracted with hot water and precipitated with ethanol to extract polysaccharides. Crude polysaccharide yields increased with an increase in irradiation dosage, but tyrosinase inhibition activity did not change. Melanin synthesis did not significantly differ between B16BL6 cells treated with irradiated and non-irradiated samples. In conclusion, gamma irradiation increased the crude polysaccharide extraction yield but did not change the whitening activity of U. pinnatifida sporophyll. This implies that gamma irradiation can be used to increase yields in the cosmetic industry, thus increasing profits.

Inhibitory Effects of Novel Hexapeptide on Melanogenesis by Regulating MITF in B16F10 Melanoma Cells (B16F10 멜라닌 세포에서 신규 헥사펩타이드의 MITF 조절을 통한 멜라닌 생성 저해 효과)

  • Lee, Eung Ji;Kim, Jandi;Jeong, Min Kyeong;Lee, Young Min;Chung, Yong Ji;Kim, Eun Mi
    • Journal of the Society of Cosmetic Scientists of Korea
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    • v.46 no.1
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    • pp.11-22
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    • 2020
  • In this study, we investigated anti-pigmentation effect of a hexapeptide. The peptide significantly reduced melanin contents and inhibited tyrosinase activity in a dose-dependent manner, in which tyrosinase is a key enzyme in melanogenesis. The peptide also significantly reduced the expression levels of tyrosinase (TYR), tyrosinase-related protein 1 (TYRP1) and their upstream transcription factor, microphthalmia-associated transcription factor (MITF). Furthermore, the peptide suppressed the phosphorylation level of cAMP-response element binding protein (CREB), a transcription factor of MITF, and increased the phosphorylation level of extracellular signal-regulated kinase (ERK), a kinase mediates MITF phosphorylation and proteasomal degradation. The peptide significantly inhibited the expression of Rab27A, Melanophilin, and MyosinVa, the components of motor complex involved in intracellular movement of melanosome. These results suggest that Hexapeptide could be used as an effective whitening agent that has inhibitory effect on melanin production and melanosome transport by regulating expression and degradation of MITF in melanocytes.

Immunomodulatory and anti-metastatic activities of polysaccharide isolated from red cabbage (적양배추에서 분리한 다당의 면역 및 항전이 활성)

  • Lee, Sue Jung;Shin, Kwang-Soon
    • Korean Journal of Food Science and Technology
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    • v.51 no.3
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    • pp.263-271
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    • 2019
  • In this study, we examined the immunostimulating characteristics of a hot water extract (RCW) and crude polysaccharides (RCP) of red cabbage. RCW and RCP did not show any cytotoxicity in B16BL6 cells and macrophages. Although the sugar compositions of RCW and RCP were similar, the uronic acid content of RCP was higher than that of RCW RCP significantly increased the production of various cytokines and NO, whereas RCW did not affect the production of cytokines and NO. In an ex vivo assay of natural killer (NK) cell activity, intravenous (i.v.) administration of RCP significantly augmented NK cytotoxicity against Yac-1 tumor cells at 3 days after RCP treatment. In an experimental lung metastasis model using B16BL6 melanoma cells, i.v. administration of RCP at a dose of $1,000{\mu}g$ per mouse significantly inhibited 47.3% of lung metastasis. These results suggest that crude polysaccharide isolated from red cabbage is a promising food ingredient for the prevention of tumor metastasis.

Evaluation of Whitening Activity and Wrinkle Inhibitory Effect of Ethanol Extracts of Nelumbinis Rhizomatis Nodus (우절 에탄올추출물의 미백활성능과 주름저해 효능평가)

  • Jang, Young-Ah;Yeom, Bo-Seul;Kim, Se-Gie;Lee, Jin-Tae
    • Journal of Life Science
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    • v.29 no.11
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    • pp.1192-1199
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    • 2019
  • The intention of this study was to confirm the possible use of an ethanol extracts of Nelumbinis Rhizomatis Nodus (NRN) as a cosmetic material. To this end, we extracted NRN with 70% ethanol and performed biological activity evaluation of whitening efficacy and wrinkle reduction. We performed cellular tyrosinase inhibition and melanin contents assay to check the whitening activity of NRN and carried out a toxicity evaluation of NRN via an MTT assay and the amounts of associated proteins that affect melanin production in a melanoma cell line (B16F10). And collagenase inhibitory assay was performed for the evaluation of anti-wrinkle of samples. In addition, a toxicity evaluation using an MTT assay and matrix metalloprotease (MMP-1) and procollagen synthesis inhibition by NRN were evaluated in a fibroblast cell line (CCD-986sk). Western blot results for the whitening activity evaluation revealed that the levels of two proteins related to melanin production, tyrosinase-related protein-1 (TRP-1) and tyrosinase-related protein-2 (TRP-2), were decreased in a dose-dependent manner. Moreover, collagenase inhibition activity at a concentration of $500{\mu}g/ml$ NRN by measuring epigallocatechin-3-gallate (EGCG) was increased by more than 80% compared to the control group. Meanwhile, procollagen synthesis was reduced by 68.8% in the UVB-induced CCD- 986sk cells group whereas collagen synthesis recovered by 80.2% with $25{\mu}g/ml$ NRN. The MMP-1 expression rate showed 20.2% reduction at $25{\mu}g/ml$. The results of the experiments verified the whitening and wrinkle suppression effects of NRN and confirmed that it could be used as a safe natural cosmetic material in the future.

Immuno-stimulating and anti-metastatic activities of the polysaccharides isolated from Angelica gigas (참당귀로부터 분리한 다당의 면역증진 활성과 항전이 활성)

  • Son, Seung-U;Shin, Kwang-Soon
    • Korean Journal of Food Science and Technology
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    • v.53 no.3
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    • pp.304-312
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    • 2021
  • The present study aimed to develop new physiologically active ingredients from Angelica gigas. The polysaccharides purified from A. gigas, AGE-2c-I, showed potent anti-complementary activity in a dose-dependent manner. C3 activation products were identified through crossed immuno-electrophoresis using anti-human C3 antibodies and the anti-complementary activity of AGE-2c-I under Ca++-free conditions suggests that AGE-2c-I may induce complementary activation via both alternative and classical pathways. In addition, AGE-2c-I augmented the production of various cytokines, such as interleukin (IL)-6, IL-10, IL-12, and tumor necrosis factor-α, by peritoneal macrophages. Furthermore, intravenous (i.v.) administration of AGE-2c-I dose-dependently enhanced natural killer cell cytotoxicity against YAC-1 lymphoma. In experimental lung metastasis, prophylactic i.v. administration of AGE-2c-I inhibited lung metastasis by 58% at 100 ㎍/mouse. From the above results, we suggest that AGE-2c-I purified from A. gigas has potent immune system-stimulating activities, and is a potentially promising food ingredient beneficial to human health.

Verification of the Antioxidant Effects and Whitening Activity of fermented Ambrosia trifida L. Extracts in B16F10 Cells (단풍잎돼지풀 발효 추출물의 항산화 효과 및 B16F10 세포에서의 미백 활성 검증)

  • Yoo, Dan-Hee;Oh, Min-Jeong;Yeom, Hyeon-Ji;Lee, Jin-Young
    • Microbiology and Biotechnology Letters
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    • v.48 no.4
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    • pp.556-563
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    • 2020
  • The purpose of this study was to verify the antioxidant and whitening effects of fermented Ambrosia trifida L. extract (ATFE) and to verify its usefulness as a cosmetic material. The antioxidant effects were measured by assessing the electron-donating capacity and 2,2-azino-bis(3-ethyl-benthiazoline-6-sulfonic acid) (ABTS) radical scavenging ability of these extracts. ATFE was shown to have an electron-donation capacity of 68.4% at a concentration of 1000 ㎍/ml. While its ABTS+ radical scavenging ability was shown to be 58.7% at the same concentration. The ATFE tyrosinase inhibitory effect, which is related to skin-whitening, was shown to be 32.35% at a concentration of 1000 ㎍/ml and a cell viability assay using melanoma cells showed a 14.8% reduction in cell viability at a concentration of 100 ㎍/ml. Surviving cells were then used in western blot analyses to evaluate the protein inhibitory effects of ATFE at 25, 50, 100 ㎍/ml where β-actin was used as a positive control. The whitening effects of these extracts were also evaluated by western blot and show that the expression of microphthalmia-associated transcription factors, Tyrosinase-related proteins (TRP)-1, TRP-2 and Tyrosinase were all inhibited, 51.14%, 55.4%, 38.6%, 83.77% respectively, at 100 ㎍/ml ATFE. The efficacy of the whitening effects was verified and the suitability of ATFE as a cosmetic material was assured.

Antioxidant and Whitening Activities of Chlorogenic Acid, Quercetin, and Quercitrin from the Fruit of Vaccinum oldhami (정금나무 열매(Fruit of Vaccinum oldhami)의 분리 정제물(클로로겐산, 퀘르세틴 및 퀘르시트린)에 관한 항산화 및 미백활성 검증)

  • Jung-Woo Chae;Min-Jeong Oh;Hyeon-Ji Yeom;Jin-Young Lee
    • Journal of Life Science
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    • v.33 no.2
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    • pp.115-128
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    • 2023
  • The fruit of Vaccinum oldhami was separated and purified to obtain the compounds chlorogenic acid (CA), quercetin (QT), and quercitrin (QR). The electron-donating abilities of CA, QT, and QR at 1,000 ㎍/ml were 91.9%, 89.9%, and 77.4%, respectively QT and QR showed 99.5% and 91.4% ABTS+ radical scavenging ability at a 1,000 ㎍/ml concentration, respectively, and CA showed a 95% ability or higher at 100 ㎍/ml. Regarding tyrosinase inhibitory activity, CA, QT, and QR exhibited 29.5%, 34.7%, and 23.7% efficacy, respectively, at 1,000 ㎍/ml. Regarding the cell viability for melanoma cells (B16F10) assessed through MTT assay, CA, QT, and QR showed cell a viability of 80% or more at 100 ㎍/ml. To measure the deterrent of protein expression, CA affected TRP-1 and TRP-2 in accordance with increases in concentration. The protein expression inhibition rate of QT was excellent for TRP-1, TRP-2, and tyrosinase. CA was confirmed to have an excellent mRNA expression inhibitory effect against MITF, and the amount of mRNA expression of TRP-1, TRP-2, and tyrosinase decreased with an increase in the CA concentration. As the concentration of QT increased, the mRNA expression of MITF, TRP-2, and tyrosinase decreased. QR decreased the amount of mRNA as the QR concentration increased. The excellent antioxidant and whitening effects of CA, QT, and QR were thus confirmed.

Biological activity of Euonymus alatus (Thunb.) Sieb. wing extracts (화살나무 날개 추출물의 생리활성)

  • Hye-Ji Min;Du-Hyun Kim;Kwon-Il Seo
    • Food Science and Preservation
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    • v.30 no.2
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    • pp.358-368
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    • 2023
  • Euonymus alatus (Thunb.) Sieb., also known as the arrow tree in Korea, is a plant in East Asia used in traditional medicine and food. In particular, the wings of E. alatus are rich in phenolic compounds. This study evaluated the antioxidant, α-glucosidase inhibition, and anti-cancer activities of E. alatus wing extracts. The radical and hydrogen peroxide scavenging acitvities and reducing the power of 1,000 ㎍/mL E. alatus wing extracts, were similar to those of the positive control (0.1% BHT, 0.1% α-tocopherol). In addition, ethanol and methanol extract at 250 ㎍/mL showed 95.70 and 94.99% of α-glucosidase inhibition activity, respectively. The ethanol extract of E. alatus wings had the highest total polyphenol and flavonoid contents (867.8 mg% and 521.7 mg%, respectively). The E. alatus wing extracts significantly decreased the cell viability of LNCaP human prostate cancer cells (p<0.001), MDA-MB-231 human breast cancer cells (p<0.001), and HT-29 human colon cancer cells (p<0.001) in a dose-dependent manner. However, there was no significant effect on B16 mouse melanoma cells. Notably, the ethanol extracts showed higher cancer cell growth inhibitory activity in LNCaP and HT-29 cells than the other extracts. These results suggest that E. alatus wing extracts could have significant clinical applications, and our results can be used as basic data for future functional food material development.

Physiological activities of Agrimonia pilosa extract (짚신나물(Agrimonia pilosa) 추출물의 생리활성)

  • Kim, Hyun-Soo
    • Food Science and Preservation
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    • v.22 no.2
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    • pp.261-266
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    • 2015
  • In this study, we investigated the applicability of functional materials by examining various physiological activities with an extract from the Agrimonia pilosa root. The A. pilosa extract showed low cytotoxicity against murine melanoma B16F10 cells. With little or no cytotoxicity at various concentrations, the A. pilosa extract showed high levels of DPPH radical scavenging activity ($ID_{50}$, 20.70 mg/L) and anti-microbial activity against Bacillus subtilis, Escherichia coli, and Candida albicans. In particular, it had a high level of anti-microbial activities against Gram-positive bacteria. These results suggest that the A. pilosa extract can be used as a natural preservative. It also showed inhibition of tyrosinase activity ($ID_{50}$, 90.18 mg/L), as does kojic acid ($ID_{50}$, 89.13 mg/L), and especially, a higher decrease in melanin content ($ID_{50}$, 62.5 mg/L) than the arbutin level ($ID_{50}$, 100.7 mg/L) as a positive control. These findings suggest that the A. pilosa extract inhibits melanin synthesis by suppressing the intracellular tyrosinase expression. These results indicate that the A. pilosa extract may be an effective material for functional cosmetics, such as skin whitening materials.

Development of a thermo-stabel ${\beta}-agarase$ from marine organism

  • Lee, Sang-Hyeon
    • 한국생물공학회:학술대회논문집
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    • 2005.04a
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    • pp.31-32
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    • 2005
  • Neoagaro-oligosaccharides are produced only by enzymatic degradation of agarose by ${\beta}-agarase.^{1)}$ Neoagaro-oligosaccharides inhibit the growth of bacteria, slow the rate of degradation of starch, are used as low-calorie additives to improve food quality, and have macrophage-stimulating activity. Furthermore, neoagarobiose is a rare reagent that has both moisturizing effect on skin and whitening effect on melanoma $cells.^{2)}$ An agar-degrading marine bacterium was isolated from the sea water at the northeast coast in Cheju island, Korea. The strain was gram negative, aerobic, and motile rod. The 16S rRNA of the strain had the closest match of 98% homology, with that from Agarivorans albus. On the basis of several phenotypic characters and a phylogenetic analysis, this strain was designated Agarivorans sp. JA-1. In solid agar plate, Agarivorans sp. JA-1 produced a diffusible agarase that caused agar softening around the colonies. Agarivorans sp. JA-1 was cultured for 36 hr in marine broth 2216 (Difco, USA) and the supernatant that containing an extracellular ${\beta}-agarase$ was prepared by centrifugation of culture media. The enzyme exhibited relatively strong activity at $40^{\circ}C$ and was stable up to $60^{\circ}C$. Using PCR primers derived from the ${\beta}-agarase$ gene of Vibrio sp., the gene encoding ${\beta}-agarase$ from Agarivorans sp. JA-1 was cloned and sequenced. The structural gene consists of 2931 bp encoding 976 amino acids with a predicted molecular weight of 107,360 Da. The deduced amino acid sequence showed 99% and 34% homology to $agaA^{2)}$ and $agaB^{2)}$ genes for ${\beta}-agarase$ from Vibrio sp., respectively. The expression plasmid for ${\beta}-agarase$ gene of Agarivorans sp. JA-1 is being constructed and the recombinant enzyme will be biochemically characterized.

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