1
|
Nayar JC, Abboud M, Dixon KM. Cyclic AMP-regulatory element-binding protein: a novel UV-targeted transcription factor in skin cancer. Photochem Photobiol Sci 2024:10.1007/s43630-024-00578-7. [PMID: 38743195 DOI: 10.1007/s43630-024-00578-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Accepted: 04/12/2024] [Indexed: 05/16/2024]
Abstract
Common therapeutics in relation to melanoma and non-melanoma cancers include the use of kinase inhibitors. The long-term benefits of kinases, however, are limited by development of drug resistance. An alternative approach for treatment would be to focus on transcription factors. Cyclic AMP-regulatory element-binding protein (CREB) is a transcription factor that is commonly overactivated or overexpressed in many different cancers including skin cancer. Ultraviolet radiation (UVR), one of the main causes of skin cancer, can activate CREB in both melanocytes and keratinocytes. In addition, CREB has been found to be activated in skin cancers. Considering the prominent role that CREB plays in skin cancers, the studies reviewed herein raise the possibility of CREB as a potential prognostic and diagnostic marker of skin cancer and a novel target for therapeutic intervention.
Collapse
Affiliation(s)
- Julianne C Nayar
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, 2050, Camperdown, NSW, Australia
| | - Myriam Abboud
- Department of Health, Zayed University, P.O. Box 144534, Abu Dhabi, United Arab Emirates
| | - Katie M Dixon
- School of Medical Sciences, Faculty of Medicine and Health, The University of Sydney, 2050, Camperdown, NSW, Australia.
| |
Collapse
|
2
|
Chen H, Jian M, Teng H, Li Z, Xu X, Li X, Jiang R, Zhao D, Sun L, Liu J. Ginsenoside Rf in wild ginseng adventitious roots extract inhibits melanogenesis via cAMP/PKA and NO/cGMP signalling pathways in α-melanocyte-stimulating hormone-stimulated B16F10 mouse melanoma cells and zebrafish. Nat Prod Res 2024:1-8. [PMID: 38318698 DOI: 10.1080/14786419.2024.2312541] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2023] [Accepted: 01/27/2024] [Indexed: 02/07/2024]
Abstract
The scarcity of more effective wild ginseng has severely limited its use, culturing of adventitious roots from wild ginseng were its good substitute. In this study, we found ginsenoside Rf as the special component in adventitious roots extract significantly decreased melanin levels and tyrosinase activity in B16F10 cells and zebrafish, and suppressed the expression of microphthalmia-associated transcription factor and melanogenic enzymes in B16F10 cells. Notably, Rf treatment of B16F10 cells led to reduced cell levels of adenosine cyclic 3', 5'-monophosphate (cAMP), nitric oxide (NO), and guanoside cyclic 3', 5'-monophosphate (cGMP), and reduced activities of adenylate cyclase (AC), protein kinase A (PKA), guanylate cyclase (GC), and protein kinase G (PKG), which suggest Rf anti-melanogenic activity potentially involved inhibition of AC/cAMP/PKA and NO/GC/cGMP/PKG signalling pathway. This work provides experimental basis for skin-lightening effect of wild ginseng adventitious roots and their functional part.
Collapse
Affiliation(s)
- Hong Chen
- School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China
- Tonghua Herbal Biotechnology CO., Ltd, Tonghua, Jilin Province, China
| | - Mengqiong Jian
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - Huanhuan Teng
- College of Pharmacy, Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - Zhenzhuo Li
- Research Center of Traditional Chinese Medicine, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - Xiaohao Xu
- Research Center of Traditional Chinese Medicine, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - Xiangzhu Li
- Tonghua Herbal Biotechnology CO., Ltd, Tonghua, Jilin Province, China
| | - Rui Jiang
- Research Center of Traditional Chinese Medicine, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - Daqing Zhao
- Northeast Asian Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin Province, China
- Key Laboratory of Active Substances and Biological Mechanisms of Ginseng Efficacy, Ministry of Education, Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - Liwei Sun
- Research Center of Traditional Chinese Medicine, The Affiliated Hospital to Changchun University of Chinese Medicine, Changchun, Jilin Province, China
- Key Laboratory of Active Substances and Biological Mechanisms of Ginseng Efficacy, Ministry of Education, Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| | - Jianzeng Liu
- Northeast Asian Institute of Traditional Chinese Medicine, Changchun University of Chinese Medicine, Changchun, Jilin Province, China
| |
Collapse
|
3
|
Kim JM, Jung IA, Kim JM, Choi MH, Yang JH. Anti-Inflammatory Effect of Cinnamomum japonicum Siebold's Leaf through the Inhibition of p38/JNK/AP-1 Signaling. Pharmaceuticals (Basel) 2023; 16:1402. [PMID: 37895873 PMCID: PMC10610235 DOI: 10.3390/ph16101402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2023] [Revised: 09/23/2023] [Accepted: 09/29/2023] [Indexed: 10/29/2023] Open
Abstract
Cinnamomum japonicum Siebold (CJ) branch bark, commonly known as Japanese cinnamon, has been used for various culinary and medicinal applications for many centuries. Although the efficacy of CJ branch bark's anti-inflammatory and antioxidant activity for the treatment of various diseases has been confirmed, the efficacy of CJ leaves (CJLs) has not been examined. We therefore investigated whether CJL3, an ethyl acetate extract of a 70% ethanol CJL extract, exerts anti-inflammatory effects on lipopolysaccharide (LPS)-activated Kupffer cells, specialized macrophages found in the liver. Liver inflammation can activate Kupffer cells, inducing the release of pro-inflammatory molecules that contribute to tissue damage. We found that CJL3 has high 2,2-diphenyl-1-picrylhydrazyl and 2,2-azino-bis (3-ethylbenzthiazoline-6-sulfonic acid) radical-scavenging activity. Among the CJL extracts, CJL3 exhibited the greatest polyphenol content, with protocatechuic acid and 4-hydroxybenzoic acid being the most abundant. In addition, we verified that CJL3, which has strong antioxidant properties, ameliorates LPS-induced pro-inflammatory responses by inhibiting p38/JNK/AP-1 signaling. CJL3 therefore has potential for treating liver disease, including hepatitis.
Collapse
Affiliation(s)
- Ji Min Kim
- College of Korean Medicine, Dongshin University, Naju 58245, Republic of Korea; (J.M.K.); (I.A.J.); (J.M.K.)
| | - In A Jung
- College of Korean Medicine, Dongshin University, Naju 58245, Republic of Korea; (J.M.K.); (I.A.J.); (J.M.K.)
| | - Jae Min Kim
- College of Korean Medicine, Dongshin University, Naju 58245, Republic of Korea; (J.M.K.); (I.A.J.); (J.M.K.)
| | - Moon-Hee Choi
- Department of Biochemical Engineering, College of Engineering, Chosun University, Gwangju 61452, Republic of Korea
- Sumsumbio Co., Ltd., Jangseong-gun 57248, Republic of Korea
| | - Ji Hye Yang
- College of Korean Medicine, Dongshin University, Naju 58245, Republic of Korea; (J.M.K.); (I.A.J.); (J.M.K.)
| |
Collapse
|
4
|
Tung XY, Yip JQ, Gew LT. Searching for Natural Plants with Antimelanogenesis and Antityrosinase Properties for Cosmeceutical or Nutricosmetics Applications: A Systematic Review. ACS OMEGA 2023; 8:33115-33201. [PMID: 37744793 PMCID: PMC10515176 DOI: 10.1021/acsomega.3c02994] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Accepted: 07/25/2023] [Indexed: 09/26/2023]
Abstract
Excessive UV radiation (UVR) exposure has been shown in studies to be a major risk factor for most melanomas, causing premature skin aging as well as immune system suppression due to the increased production of hydrogen peroxide (H2O2) and other reactive oxygen species (ROS) during the melanogenesis process. Although several compounds with antioxidant and antityrosinase activities are widely used in the cosmetic industry, like kojic acid, hydroquinone, ascorbic acid, and arbutin, their use has been limited due to their adverse effects on the skin and cytotoxic issues. Recently, attempts have been made to develop new natural skin-lightening products by using plant extracts that are less toxic and exhibit numerous biological properties with great market demand. In this study, information on the depigmentation effects of various natural plant species was gathered from the SCOPUS database according to the PRISMA guidelines. A total of 414 records were retrieved, and finally, 76 articles were included in the qualitative synthesis by fulfilling all the inclusion criteria. In this review, we discuss the extraction methods and biological assays of 75 highly potential plant species, including the olive, yuzu, longan, and lotus. We concluded that the use of natural plants as skin-whitening agents is highly effective as there is a significant correlation between the content of polyphenolic compounds, antimelanogenesis, antityrosinase, and antioxidant activities. However, it is worth noting that the use of extraction methods or types of solvents is very important in determining the biological activities of plants.
Collapse
Affiliation(s)
- Xin Yee Tung
- Department of Biological Sciences, School
of Medical and Life Sciences, Sunway University, No. 5, Jalan Universiti, Bandar
Sunway, 47500 Petaling
Jaya, Selangor, Malaysia
| | - Jia Qi Yip
- Department of Biological Sciences, School
of Medical and Life Sciences, Sunway University, No. 5, Jalan Universiti, Bandar
Sunway, 47500 Petaling
Jaya, Selangor, Malaysia
| | - Lai Ti Gew
- Department of Biological Sciences, School
of Medical and Life Sciences, Sunway University, No. 5, Jalan Universiti, Bandar
Sunway, 47500 Petaling
Jaya, Selangor, Malaysia
| |
Collapse
|
5
|
Moreira J, Machado M, Dias-Teixeira M, Ferraz R, Delerue-Matos C, Grosso C. The neuroprotective effect of traditional Chinese medicinal plants-A critical review. Acta Pharm Sin B 2023; 13:3208-3237. [PMID: 37655317 PMCID: PMC10465969 DOI: 10.1016/j.apsb.2023.06.009] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 03/23/2023] [Accepted: 04/03/2023] [Indexed: 09/02/2023] Open
Abstract
Neurodegenerative and neuropsychiatric diseases are increasingly affecting individuals' quality of life, thus increasing their cost to social and health systems. These diseases have overlapping mechanisms, such as oxidative stress, protein aggregation, neuroinflammation, neurotransmission impairment, mitochondrial dysfunction, and excitotoxicity. Currently, there is no cure for neurodegenerative diseases, and the available therapies have adverse effects and low efficacy. For neuropsychiatric disorders, such as depression, the current therapies are not adequate to one-third of the patients, the so-called treatment-resistant patients. So, searching for new treatments is fundamental. Medicinal plants appear as a strong alternative and complement towards new treatment protocols, as they have been used for health purposes for thousands of years. Thus, the main goal of this review is to revisit the neuroprotective potential of some of the most predominant medicinal plants (and one fungus) used in traditional Chinese medicine (TCM), focusing on their proven mechanisms of action and their chemical compositions, to give clues on how they can be useful against neurodegeneration progression.
Collapse
Affiliation(s)
- João Moreira
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
| | - Mariana Machado
- Ciências Químicas e das Biomoléculas/CISA, Escola Superior de Saúde—Instituto Politécnico do Porto, Porto 4200-072, Portugal
| | - Mónica Dias-Teixeira
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
- NICiTeS—Núcleo de Investigação em Ciências e Tecnologias da Saúde, Escola Superior de Saúde Ribeiro Sanches, Lisboa 1950-396, Portugal
| | - Ricardo Ferraz
- Ciências Químicas e das Biomoléculas/CISA, Escola Superior de Saúde—Instituto Politécnico do Porto, Porto 4200-072, Portugal
- REQUIMTE/LAQV, Departamento de Química e Bioquímica Faculdade de Ciências, Universidade do Porto, Porto 4169-007, Portugal
| | - Cristina Delerue-Matos
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
| | - Clara Grosso
- REQUIMTE/LAQV, Instituto Superior de Engenharia do Porto, Instituto Politécnico do Porto, Porto 4249-015, Portugal
| |
Collapse
|
6
|
An L, Li M, Zou C, Wang K, Zhang W, Huang X, Wang Y. Walnut polyphenols and the active metabolite urolithin A improve oxidative damage in SH-SY5Y cells by up-regulating PKA/CREB/BDNF signaling. Food Funct 2023; 14:2698-2709. [PMID: 36847209 DOI: 10.1039/d2fo03310k] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Accumulating evidence has confirmed the health benefits of walnut diets in maintaining brain function with age. Recent studies have indicated that walnut polyphenols (WP) and their active metabolites urolithins may play an important role in the health benefits of walnut diets. In the present study, we evaluated the protective effect of WP and urolithin A (UroA) on H2O2-induced damage in human neuroblastoma (SH-SY5Y) cells, and investigated its mechanisms in the cAMP-response element binding protein (CREB)-mediated signaling pathway, which is tightly involved in neurodegenerative and neurological diseases. The results demonstrated that both WP (50 and 100 μg mL-1) and UroA (5 and 10 μM) treatment significantly reversed the decrease of cell viability, the leakage of extracellular lactate dehydrogenase (LDH), the overload of intracellular calcium and cell apoptosis induced by H2O2 treatment. Moreover, WP and UroA treatment also relieved H2O2-induced oxidative stress including overproduction of intracellular reactive oxygen species (ROS) and reduced activities of superoxide dismutase (SOD) and catalase (CAT). Additionally, western blot analysis showed that WP and UroA treatment significantly increased the activity of cAMP-dependent protein kinase A (PKA) and the expression of pCREB (Ser133) and its downstream molecule brain-derived neurotrophic factor (BDNF), which were decreased by H2O2 treatment. Furthermore, pretreatment with the PKA inhibitor H89 abolished the protective effects of WP and UroA, indicating that up-regulation of the PKA/CREB/BDNF neurotrophic signaling pathway is required for their neuroprotective effects against oxidative stress. The current work provides new perspectives for understanding the beneficial effects of WP and UroA on brain function, which warrants further investigation.
Collapse
Affiliation(s)
- Lei An
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China.
| | - Mengxue Li
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China.
- Rizhao HUAWEI Institute of Comprehensive Health Industries, Rizhao, Shandong, China
- Shandong KEEPFIT Biotech. Co., Ltd, Rizhao, Shandong, China
| | - Cunen Zou
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China.
- Rizhao HUAWEI Institute of Comprehensive Health Industries, Rizhao, Shandong, China
- Shandong KEEPFIT Biotech. Co., Ltd, Rizhao, Shandong, China
| | - Ke Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China.
- Rizhao HUAWEI Institute of Comprehensive Health Industries, Rizhao, Shandong, China
- Shandong KEEPFIT Biotech. Co., Ltd, Rizhao, Shandong, China
| | - Wei Zhang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China.
| | - Xiaolong Huang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China.
| | - Yousheng Wang
- Beijing Advanced Innovation Center for Food Nutrition and Human Health, Beijing Technology and Business University, Beijing, China.
- Rizhao HUAWEI Institute of Comprehensive Health Industries, Rizhao, Shandong, China
- Shandong KEEPFIT Biotech. Co., Ltd, Rizhao, Shandong, China
| |
Collapse
|
7
|
Phenolic acids and a static magnetic field change the expression of transforming growth factor β isoforms in amelanotic melanoma cells. Mol Biol Rep 2023; 50:4207-4216. [PMID: 36899279 PMCID: PMC10147755 DOI: 10.1007/s11033-023-08336-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2022] [Accepted: 02/14/2023] [Indexed: 03/12/2023]
Abstract
BACKGROUND Melanoma is an aggressive type of cancer that can metastasize to numerous other organs. TGFβ is one of the key signaling pathways in melanoma progression. Previous studies on various types of cancer have shown that both: polyphenols and a static magnetic field (SMF) can be potential chemopreventive/therapeutic agents. Therefore, the aim of the study was to evaluate the effect of a SMF and selected polyphenols on the transcriptional activity of TGFβ genes in melanoma cells. METHODS AND RESULTS Experiments were performed on the C32 cell line treated with caffeic or chlorogenic acids, and with simultaneous exposure to a moderate-strength SMF. The RT-qPCR method was used to determine the mRNA level of genes encoding the TGFβ isoforms and their receptors. The concentration of the TGFβ1 and TGFβ2 proteins were also measured in the cell culture supernates. The first response of C32 melanoma cells to both factors is the reduction of TGFβ levels. Then, mRNA level of these molecules returned to values close to pre-treatment level by the end of experiment. CONCLUSION Our study results demonstrate the potential of polyphenols and a moderate-strength SMF to support cancer therapy by altering TGFβ expression, which is a very promising topic for the diagnosis and treatment of melanoma.
Collapse
|
8
|
Karadeniz F, Oh JH, Seo Y, Yang J, Lee H, Kong CS. Quercetin 3- O-Galactoside Isolated from Limonium tetragonum Inhibits Melanogenesis by Regulating PKA/MITF Signaling and ERK Activation. Int J Mol Sci 2023; 24:ijms24043064. [PMID: 36834475 PMCID: PMC9962826 DOI: 10.3390/ijms24043064] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 02/01/2023] [Accepted: 02/02/2023] [Indexed: 02/08/2023] Open
Abstract
Quercetin 3-O-galactoside (Q3G) is a common dietary flavanol that has been shown to possess several bioactivities, including anti-melanogenesis. However, how Q3G exerts its anti-melanogenic effect has not been studied. The current study, therefore aimed to investigate the anti-melanogenesis potential of Q3G and elucidate the underlying action mechanism in α-melanocyte-stimulating hormone (α-MSH)-induced hyperpigmentation model of B16F10 murine melanoma cells. Results showed that α-MSH stimulation significantly increased tyrosinase (TYR) and melanin production, which were significantly downregulated by Q3G treatment. The treatment with Q3G suppressed the transcriptional and protein expressions of melanogenesis-related enzymes TYR, tyrosinase related protein-1 (TRP-1), and TRP-2, along with the melanogenic transcription factor microphthalmia-associated transcription factor (MITF) in B16F10 cells. It was shown that Q3G downregulated MITF expression and suppressed its transcriptional activity by inhibiting the cAMP-dependent protein kinase A (PKA)-mediated activation of CREB and GSK3β. In addition, MAPK-regulated MITF activation signaling was also involved in the inhibition of melanin production by Q3G. The results suggest that the anti-melanogenic properties of Q3G rationalize further studies in vivo to confirm its action mechanism and consequent utilization as a cosmetic ingredient against hyperpigmentation.
Collapse
Affiliation(s)
- Fatih Karadeniz
- Marine Biotechnology Center for Pharmaceuticals and Foods, College of Medical and Life Sciences, Silla University, Busan 46958, Republic of Korea
| | - Jung Hwan Oh
- Marine Biotechnology Center for Pharmaceuticals and Foods, College of Medical and Life Sciences, Silla University, Busan 46958, Republic of Korea
- Nutritional Education, Graduate School of Education, Silla University, Busan 46958, Republic of Korea
| | - Youngwan Seo
- Division of Convergence on Marine Science, College of Ocean Science and Technology, Korea Maritime and Ocean University, Busan 49112, Republic of Korea
| | - Jiho Yang
- Department of Food and Nutrition, College of Medical and Life Sciences, Silla University, Busan 46958, Republic of Korea
| | - Hyunjung Lee
- Department of Food and Nutrition, College of Medical and Life Sciences, Silla University, Busan 46958, Republic of Korea
| | - Chang-Suk Kong
- Marine Biotechnology Center for Pharmaceuticals and Foods, College of Medical and Life Sciences, Silla University, Busan 46958, Republic of Korea
- Department of Food and Nutrition, College of Medical and Life Sciences, Silla University, Busan 46958, Republic of Korea
- Correspondence: ; Tel.: +82-51-999-5429
| |
Collapse
|
9
|
Choi MH, Yang SH, Kim DS, Kim ND, Shin HJ. Ethyl Gallate Isolated from Castanopsis cuspidata var. sieboldii Branches Inhibits Melanogenesis and Promotes Autophagy in B16F10 Cells. Antioxidants (Basel) 2023; 12:antiox12020269. [PMID: 36829827 PMCID: PMC9952331 DOI: 10.3390/antiox12020269] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/11/2023] [Revised: 01/20/2023] [Accepted: 01/23/2023] [Indexed: 01/27/2023] Open
Abstract
The Castanopsis cuspidata var. sieboldii (CCS) plant grows predominantly in temperate regions of Asian countries, such as South Korea. Research on CCS has so far concentrated on the nutritional analysis, antioxidant activity, and anti-inflammation properties of its branches. However, the isolation of compounds and structural elucidation of effective single molecules remain unexplored, necessitating further exploration of CCS branches. Therefore, this study demonstrates the antioxidant and antimelanogenic activity of a single substance of ethyl gallate (EG) isolated from CCS branch extracts. Notably, the antimelanogenic (whitening) activity of EG extracted from CCS branches remains unexplored. Tyrosinase inhibition, kinetic enzyme assays, and molecular docking studies were conducted using mushroom tyrosinase in order to examine the antioxidant mechanism and antimelanin activity of EG in B16F10 melanoma cells. Nontoxic EG concentrations were found to be below 5 µg/mL. While EG significantly reduced the levels of whitening-associated proteins, p-CREB, and p-PKA, it dose-dependently inhibited the expression of TYR, TRP-1, TRP-2, and transcription factor (MITF). In addition, EG downregulated melanogenetic gene expression and activated autophagy signals. Therefore, EG extracted from CCS branches could serve as a novel functional cosmetic material with antimelanogenic and autophagy-enhancing activity.
Collapse
Affiliation(s)
- Moon-Hee Choi
- Department of Beauty and Cosmetology, Graduate School of Industrial Technology and Entrepreneurship, Chosun University, Gwangju 61452, Republic of Korea
| | - Seung-Hwa Yang
- Department of Chemical Engineering, Graduate School of Chosun University, Gwangju 61452, Republic of Korea
| | - Da-Song Kim
- Department of Chemical Engineering, Graduate School of Chosun University, Gwangju 61452, Republic of Korea
| | - Nam-Doo Kim
- VORONOI BIO Inc., Incheon 21984, Republic of Korea
| | - Hyun-Jae Shin
- Department of Beauty and Cosmetology, Graduate School of Industrial Technology and Entrepreneurship, Chosun University, Gwangju 61452, Republic of Korea
- Department of Chemical Engineering, Graduate School of Chosun University, Gwangju 61452, Republic of Korea
- Correspondence: ; Tel.: +82-62-230-7518
| |
Collapse
|
10
|
Wang Y, Li M, Zeng J, Yang Y, Li Z, Hu S, Yang F, Wang N, Wang W, Tie J. MiR-585-5p impedes gastric cancer proliferation and metastasis by orchestrating the interactions among CREB1, MAPK1 and MITF. Front Immunol 2022; 13:1008195. [PMID: 36268034 PMCID: PMC9576935 DOI: 10.3389/fimmu.2022.1008195] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2022] [Accepted: 09/05/2022] [Indexed: 12/24/2022] Open
Abstract
BackgroundGastric cancer (GC) is one of the most malignant and lethal cancers worldwide. Multiple microRNAs (miRNAs) have been identified as key regulators in the progression of GC. However, the underlying pathogenesis that miRNAs govern GC malignancy remains uncertain. Here, we identified a novel miR-585-5p as a key regulator in GC development.MethodsThe expression of miR-585-5p in the context of GC tissue was detected by in situ hybridization for GC tissue microarray and assessed by H-scoring. The gain- and loss-of-function analyses comprised of Cell Counting Kit-8 assay and Transwell invasion and migration assay. The expression of downstream microphthalmia-associated transcription factor (MITF), cyclic AMP-responsive element-binding protein 1 (CREB1) and mitogen-activated protein kinase 1 (MAPK1) were examined by Immunohistochemistry, quantitative real-time PCR and western blot. The direct regulation between miR-585-5p and MITF/CREB1/MAPK1 were predicted by bioinformatic analysis and screened by luciferase reporter assay. The direct transcriptional activation of CREB1 on MITF was verified by luciferase reporter assay, chromatin immunoprecipitation (ChIP) and electrophoretic mobility shift assays (EMSAs). The interaction between MAPK1 and MITF was confirmed by co-immunoprecipitation (Co-IP) and immunofluorescent double-labelled staining.ResultsMiR-585-5p is progressively downregulated in GC tissues and low miR-585-5p levels were strongly associated with poor clinical outcomes. Further gain- and loss-of-function analyses showed that miR-585-5p possesses strong anti-proliferative and anti-metastatic capacities in GC. Follow-up studies indicated that miR-585-5p targets the downstream molecules CREB1 and MAPK1 to regulate the transcriptional and post-translational regulation of MITF, respectively, thus controlling its expression and cancer-promoting activity. MiR-585-5p directly and negatively regulates MITF together with CREB1 and MAPK1. According to bioinformatic analysis, promotor reporter gene assays, ChIP and EMSAs, CREB1 binds to the promotor region to enhance transcriptional expression of MITF. Co-IP and immunofluorescent double-labelled staining confirmed interaction between MAPK1 and MITF. Protein immunoprecipitation revealed that MAPK1 enhances MITF activity via phosphorylation (Ser73). MiR-585-5p can not only inhibit MITF expression directly, but also hinder MITF expression and pro-cancerous activity in a CREB1-/MAPK1-dependent manner indirectly.ConclusionsIn conclusion, this study uncovered miR-585-5p impedes gastric cancer proliferation and metastasis by orchestrating the interactions among CREB1, MAPK1 and MITF.
Collapse
Affiliation(s)
- Yunwei Wang
- State key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Air Force Medical University, Xi’an, China
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi’an, China
| | - Ming Li
- State key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Air Force Medical University, Xi’an, China
- Department of Gastroenterology, Xi’an People’s Hospital (Xi’an Fourth Hospital), Xi’an, China
| | - Jiaoxia Zeng
- State key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Air Force Medical University, Xi’an, China
| | - Yunshu Yang
- Department of Burns and Cutaneous Surgery, Xijing Hospital, Air Force Medical University, Xi’an, China
| | - Zengshan Li
- Department of Pathology, Xijing Hospital, Air Force Medical University, Xi’an, China
| | - Sijun Hu
- State key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Air Force Medical University, Xi’an, China
| | - Fangfang Yang
- State key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Air Force Medical University, Xi’an, China
| | - Na Wang
- State key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Air Force Medical University, Xi’an, China
| | - Wenlan Wang
- Department of Aerospace Hygiene, School of Aerospace Medicine, Air Force Medical University, Xi’an, China
- *Correspondence: Jun Tie, ; Wenlan Wang,
| | - Jun Tie
- State key Laboratory of Cancer Biology and Xijing Hospital of Digestive Diseases, Xijing Hospital, Air Force Medical University, Xi’an, China
- *Correspondence: Jun Tie, ; Wenlan Wang,
| |
Collapse
|
11
|
Uto T, Tung NH, Ohta T, Shoyama Y. (+)-Magnolin Enhances Melanogenesis in Melanoma Cells and Three-Dimensional Human Skin Equivalent; Involvement of PKA and p38 MAPK Signaling Pathways. PLANTA MEDICA 2022; 88:1199-1208. [PMID: 35211932 DOI: 10.1055/a-1740-7325] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Magnoliae Flos is a traditional herbal medicine used to treat nasal congestion associated with headache, empyema, and allergic rhinitis. In our preliminary screening of crude drugs used in Japanese Kampo formulas for melanin synthesis, the methanol extract of Magnoliae Flos was found to exhibit strong melanin synthesis activity. However, there have been no studies evaluating the effects of Magnoliae Flos or its constituents on melanogenesis. The present study aimed to isolate the active compounds from Magnoliae Flos that activate melanin synthesis in melanoma cells and three-dimensional human skin equivalent, and to investigate the molecular mechanism underlying melanin induction. The methanol extract of Magnoliae Flos induced an increase of melanin content in both B16-F1 and HMV-II cells. A comparison of melanin induction by three fractions prepared from the extract showed that the ethyl acetate fraction markedly induced melanin synthesis. Bioassay-guided separation of the ethyl acetate fraction resulted in the isolation of seven lignans (1: - 7: ). Among them, (+)-magnolin (5: ) strongly induced melanin synthesis and intracellular tyrosinase activity. Furthermore, the ethyl acetate fraction and 5: clearly induced melanin content in a three-dimensional human skin equivalent. Molecular analysis revealed that 5: triggered the protein expression of tyrosinase, tyrosinase-related protein-1, and tyrosinase-related protein-2. Further analysis of transcriptional factors and signaling pathways demonstrated that 5: induces the protein expression of tyrosinase, tyrosinase-related protein-1, and tyrosinase-related protein-2 activated by the protein kinase A- and p38 mitogen-activated protein kinase-dependent pathways, leading to cAMP-responsive element-binding protein phosphorylation and microphthalmia-associated transcription factor expression. These findings demonstrate the potential of 5: as a potent therapeutic agent for hypopigmentation.
Collapse
Affiliation(s)
- Takuhiro Uto
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Nagasaki, Japan
| | - Nguyen Huu Tung
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Nagasaki, Japan
- Faculty of Pharmacy, Phenikaa University, Hanoi, Vietnam
| | - Tomoe Ohta
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Nagasaki, Japan
| | - Yukihiro Shoyama
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University, Sasebo, Nagasaki, Japan
| |
Collapse
|
12
|
Nomilin from Yuzu Seed Has In Vitro Antioxidant Activity and Downregulates Melanogenesis in B16F10 Melanoma Cells through the PKA/CREB Signaling Pathway. Antioxidants (Basel) 2022; 11:antiox11091636. [PMID: 36139710 PMCID: PMC9495840 DOI: 10.3390/antiox11091636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Revised: 08/11/2022] [Accepted: 08/19/2022] [Indexed: 11/24/2022] Open
Abstract
Yuzu (Citrus junos) is a citrus plant native to Asian countries, including Korea, Japan, and China. Yuzu peel and seed contain abundant vitamin C, citric acid, and polyphenols. Although the antioxidative and antimelanogenic activities of other citrus fruits and yuzu extract have been reported, the tyrosinase inhibitory activity of the limonoid aglycone contained in yuzu seed extract is unknown. We separated yuzu seeds into the husk, shell, and meal and evaluated antioxidant activity of each. The limonoid glucoside fraction of the husk identified nomilin, a novel tyrosinase inhibitor. We performed tyrosinase inhibitory activity and noncompetitive inhibition assays and docking studies to determine nomilin binding sites. Furthermore, we evaluated the antioxidative mechanism and antimelanogenic activity of nomilin in B16F10 melanoma cells. The concentration of nomilin that did not show toxicity was <100 µg/mL. Nomilin suppressed protein expression of TYR, TRP-1, TRP-2, and microphthalmia-associated transcription factor (MITF) in a concentration-dependent manner. Nomilin significantly reduced the levels of p-CREB and p-PKA at the protein level and decreased the levels of skin-whitening-related factors MITF, tyrosinase, TRP-1, and TRP-2 at the mRNA level in a concentration-dependent manner. Thus, nomilin from yuzu seed husk can be used as a skin-whitening agent in cosmetics.
Collapse
|
13
|
Yeh YM, Tsai TY, Yang CY. Encapsulation and release kinetics of polyphenols and p-coumaric acid extracted from Phyllostachys makinoi by ultrasonic-pretreatment autoclaving. Lebensm Wiss Technol 2022. [DOI: 10.1016/j.lwt.2022.113838] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
|
14
|
Spectrum-effect relationship between HPLC fingerprint and antioxidant of "San-Bai Decoction" extracts. J Chromatogr B Analyt Technol Biomed Life Sci 2022; 1208:123380. [PMID: 35908440 DOI: 10.1016/j.jchromb.2022.123380] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2022] [Revised: 07/01/2022] [Accepted: 07/18/2022] [Indexed: 11/23/2022]
Abstract
"San-Bai Decoction" (SBD) has been a traditional Chinese medicine compound preparation for replenishing Qi and promoting blood circulation, whitening skin, and removing blemishes since ancient times. However, its chemical composition and antioxidant activity are not clear thus far, which limits the in-depth study on its pharmacodynamic material basis and efficacy. The objective of this study was to establish the fingerprint profile of SBD, assess its antioxidant activity by measuring 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging ability, and find the spectrum-effect relationship of SBD by Grey Relation Analysis (GRA) and Partial Least Squares Regression (PLS). In this study, the fingerprint of SBD was established by high performance liquid chromatography (HPLC), and 20 common peaks were found, among which 6 peaks were designated. The similarities between the fingerprints of 12 batches of SBD and the reference fingerprint (R) were all greater than 0.900. Meanwhile, the antioxidant activities of all batches were concentration-dependent in their linear regression equation. The result of GRA showed that the correlation order of 20 common peaks for DPPH radical scavenging was X13 > X7 > X3 > X6 > X10 > X11 > X4 > X12 > X2 > X18 > X9 > X5 > X19 > X1 > X20 > X16 > X17 > X15 > X8 > X14. At the same time, PLS study demonstrated that the contribution of six identified characteristic peaks to DPPH radical scavenging ability was X1 = X7 > X6 > X19 > X20 > X16. In this study, the spectrum-effect relationship of SBD between its HPLC fingerprint and the antioxidant activity can be used to screen the pharmacodynamic substance basis of its antioxidant action and lay the foundation for establishing quality standards and product development.
Collapse
|
15
|
Merecz-Sadowska A, Sitarek P, Kowalczyk T, Zajdel K, Kucharska E, Zajdel R. The Modulation of Melanogenesis in B16 Cells Upon Treatment with Plant Extracts and Isolated Plant Compounds. Molecules 2022; 27:molecules27144360. [PMID: 35889231 PMCID: PMC9324663 DOI: 10.3390/molecules27144360] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2022] [Revised: 06/22/2022] [Accepted: 07/05/2022] [Indexed: 01/27/2023] Open
Abstract
Plants are a rich source of secondary metabolites that exhibit numerous desired properties. The compounds may influence the biology of melanocytes, pigment cells that produce melanin, by modulating numerous signaling pathways, including cAMP/PKA, MAPKs and PI3K/AKT. Its downstream target is microphthalmia-associated transcription factor, responsible for the expression of the tyrosinase enzyme, which plays a major role in melanogenesis. Therefore, this literature review aims to provide insights related to melanogenesis modulation mechanisms of plant extracts and isolated plant compounds in B16 cells. Database searches were conducted using online-based library search instruments from 2012 to 2022, such as NCBI-PubMed and Google Scholar. Upregulation or downregulation of signaling pathways by phytochemicals can influence skin hypo- and hyperpigmentation by changing the level of melanin production, which may pose a significant cosmetic issue. Therefore, plant extracts or isolated plant compounds may be used in the therapy of pigmentation disorders.
Collapse
Affiliation(s)
- Anna Merecz-Sadowska
- Department of Computer Science in Economics, University of Lodz, 90-214 Lodz, Poland;
- Correspondence:
| | - Przemysław Sitarek
- Department of Biology and Pharmaceutical Botany, Medical University of Lodz, 90-151 Lodz, Poland;
| | - Tomasz Kowalczyk
- Department of Molecular Biotechnology and Genetics, University of Lodz, 90-237 Lodz, Poland;
| | - Karolina Zajdel
- Department of Medical Informatics and Statistics, Medical University of Lodz, 90-645 Lodz, Poland;
| | - Ewa Kucharska
- Chair of Gerontology, Geriatrics and Social Work at the Faculty of Pedagogy, Ignatianum Academy in Cracow, 31-501 Cracow, Poland;
| | - Radosław Zajdel
- Department of Computer Science in Economics, University of Lodz, 90-214 Lodz, Poland;
| |
Collapse
|
16
|
Choi MH, Yang SH, Park WK, Shin HJ. Bamboo Lignin Fractions with In Vitro Tyrosinase Inhibition Activity Downregulate Melanogenesis in B16F10 Cells via PKA/CREB Signaling Pathway. Int J Mol Sci 2022; 23:ijms23137462. [PMID: 35806473 PMCID: PMC9267441 DOI: 10.3390/ijms23137462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 02/05/2023] Open
Abstract
Cosmetic ingredients originating from natural resources have garnered considerable attention, and the demand for whitening ingredients is increasing, particularly in Asian countries. Lignin is a natural phenolic biopolymer significantly effective as a natural sunscreen, as its ultraviolet protection efficacy ranges from 250 to 400 nm. However, using different types of lignin as cosmetic ingredients is difficult owing to the heterogeneity of lignin and the lack of in vitro and in vivo safety and efficacy data. Thus, steam-exploded lignin (SEL) was prepared from bamboo, fractionated via successive organic solvent extraction, and sequentially fractionated using ethyl acetate, methanol, and acetone to investigate its potential as a natural whitening material. Gel permeation chromatography showed that the molecular weight of acetone-soluble and acetone-insoluble SEL fractions were the lowest and the highest, respectively. Monomer structures of the four lignin fractions were elucidated using 1H, 13C, and 2D heteronuclear single quantum coherence nuclear magnetic resonance and pyrolysis gas chromatography/mass spectrometry. The antioxidant and tyrosinase inhibition activities of the four fractions were compared. The methanol-soluble SEL fraction (SEL-F2) showed the highest antioxidant activity (except 2,2-diphenyl-1-picrylhydrazyl scavenging activity), and the enzyme inhibition kinetics were confirmed. In this study, the expression pattern of the anti-melanogenic-related proteins by SEL-F2 was confirmed for the first time via the protein kinase A (PKA)/cAMP-response element-binding (CREB) protein signaling pathway in B16F10 melanoma cells. Thus, SEL may serve as a valuable cosmetic whitening ingredient.
Collapse
Affiliation(s)
- Moon-Hee Choi
- Department of Beauty and Cosmetics, Graduate School of Industrial Technology Startup, Chosun University, 309 Pilmundaero, Gwangju 61452, Korea;
| | - Seung-Hwa Yang
- Department of Chemical Engineering, Graduate School of Chosun University, Gwangju 61452, Korea;
| | - Won-Keun Park
- Department of Chemical Energy Engineering, Sangmyong University, Seoul 03016, Korea;
| | - Hyun-Jae Shin
- Department of Beauty and Cosmetics, Graduate School of Industrial Technology Startup, Chosun University, 309 Pilmundaero, Gwangju 61452, Korea;
- Department of Chemical Engineering, Graduate School of Chosun University, Gwangju 61452, Korea;
- Correspondence: ; Tel.: +82-62-230-75-18
| |
Collapse
|
17
|
Phyllostachys nigra Variety Henosis, a Domestic Bamboo Species, Protects PC12 Cells from Oxidative Stress-mediated Cell Injury through Nrf2 Activation. BIOTECHNOL BIOPROC E 2022. [DOI: 10.1007/s12257-021-0395-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
18
|
Nam G, An SK, Park IC, Bae S, Lee JH. Daphnetin inhibits α-MSH-induced melanogenesis via PKA and ERK signaling pathways in B16F10 melanoma cells. Biosci Biotechnol Biochem 2022; 86:596-609. [PMID: 35325017 DOI: 10.1093/bbb/zbac016] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Accepted: 01/24/2022] [Indexed: 12/18/2022]
Abstract
Daphnetin is a dehydroxylated derivative of coumarin isolated from Daphne species. However, the effect of daphnetin on melanogenesis has not been elucidated. This study aims to investigate the inhibitory effect of daphnetin on melanogenesis in α-melanocyte stimulating hormone (α-MSH)-treated B16F10 cells and its potential mechanism. Melanin content analysis and cellular tyrosinase activity assay showed that daphnetin inhibited melanin biosynthesis in α-MSH-treated B16F10 cells. Immunoblotting and qRT-PCR also indicated that daphnetin suppressed the expression of microphthalmia-associated transcription factor, a mastering transcription factor of melanogenesis and its downstream melanogenic enzymes including tyrosinase and tyrosinase-related proteins. Moreover, daphnetin downregulated the phosphorylation of PKA, ERK, MSK1, and CREB. Additionally, daphnetin inhibited melanin synthesis in UVB-irradiated HaCaT conditioned medium system suggesting that daphnetin has potential as an antipigmentation activity in a physiological skin condition. Our data propose that daphnetin inhibits melanogenesis via modulating both the PKA/CREB and the ERK/MSK1/CREB pathways.
Collapse
Affiliation(s)
- Garam Nam
- Department of Cosmetics Engineering, Konkuk University, Seoul, Republic of Korea
| | - Sung Kwan An
- Department of Cosmetics Engineering, Konkuk University, Seoul, Republic of Korea
| | - In-Chul Park
- Division of Radiation Cancer Research, Korea Institute of Radiological and Medical Sciences, Nowon-gu, Seoul, Republic of Korea
| | - Seunghee Bae
- Department of Cosmetics Engineering, Konkuk University, Seoul, Republic of Korea
| | - Jae Ho Lee
- Department of Cosmetics Engineering, Konkuk University, Seoul, Republic of Korea
| |
Collapse
|
19
|
Mechanistic Insights into the Ameliorating Effect of Melanogenesis of Psoralen Derivatives in B16F10 Melanoma Cells. Molecules 2022; 27:molecules27092613. [PMID: 35565964 PMCID: PMC9102055 DOI: 10.3390/molecules27092613] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Revised: 04/09/2022] [Accepted: 04/12/2022] [Indexed: 02/05/2023] Open
Abstract
The objectives of this study were to investigate the melanogenetic potential of the psoralen derivatives 5-hydroxypsoralen, 5-methoxypsoralen, 8-hydroxypsoralen, 8-methoxypsoralen, and 5,8-dimethoxypsoralen in B16F10 melanoma cells. The results indicated that melanin production is significantly stimulated in B16F10 melanoma cells with 5-methoxypsoralen, 8-methoxypsoralen, and 5,8-dimethoxypsoralen, especially for 5-methoxypsoralen (bergapten), as reported previously. In addition, Western blot results showed that the protein levels of microphthalmia-associated transcription factor (MITF), tyrosinase, tyrosinase-related protein-1 (TRP-1), and tyrosinase-related protein-2 (TRP-2) increase after bergapten treatment for the first time. The results also showed that bergapten promotes the phosphorylation of Akt at Ser 473 and glycogen synthase kinase-3β at Ser 9. Moreover, bergapten increased the content of β-catenin in the cell cytoplasm and nucleus by reducing the phosphorylated β-catenin (p-β-catenin) content. The results also indicated that bergapten regulates melanogenesis by upregulating the phosphorylation of p38 and JNK-mitogen-activated protein kinase. Taken together, these findings suggest that the regulation of melanogenesis by bergapten may be mediated by the β-catenin and MAPK signaling pathways and that bergapten might provide new insights into the pathogenesis of pigmented diseases.
Collapse
|
20
|
UTO T, OHTA T, KATAYAMA K, SHOYAMA Y. Silibinin promotes melanogenesis through the PKA and p38 MAPK signaling pathways in melanoma cells. Biomed Res 2022; 43:31-39. [DOI: 10.2220/biomedres.43.31] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Takuhiro UTO
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Tomoe OHTA
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Koki KATAYAMA
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University
| | - Yukihiro SHOYAMA
- Department of Pharmacognosy, Faculty of Pharmaceutical Sciences, Nagasaki International University
| |
Collapse
|
21
|
Maher A, El Sayed N, Nafea H, Gad M. Rolipram rescues memory consolidation deficits caused by sleep deprivation: Implication of the cAMP/PKA and cAMP/Epac pathways. CNS & NEUROLOGICAL DISORDERS-DRUG TARGETS 2021; 21:631-639. [PMID: 34397335 DOI: 10.2174/1871527320666210816105144] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/05/2021] [Revised: 07/16/2021] [Accepted: 07/20/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Over the last few years, the number of people suffering from sleeping disorders has increased significantly despite negative effects on cognition and an association with brain inflammation. OBJECTIVES We assessed memory deficits caused by sleep deprivation (SD) to determine the therapeutic effect of phosphodiesterase 4 (PDE4) inhibitors on SD-induced memory deficits and to investigate whether the modulation of memory deficits by PDE4 inhibitors is mediated by a protein kinase A (PKA)-independent pathway in conjunction with a PKA-dependent pathway. METHODS Adult male mice were divided into four groups. Three SD groups were deprived of Rapid eye movement (REM) sleep for 12 h a day for six consecutive days. They were tested daily in the Morris water maze to evaluate learning and memory. One of the SD groups was injected with a PDE4 inhibitor, rolipram (1 mg/kg ip), whereas another had rolipram co-administered with chlorogenic acid (CHA, 20 mg/kg ip), an inhibitor of PKA. After 6 days, the mice were sacrificed, and the hippocampi were evaluated for cyclic AMP (cAMP) and nuclear factor Nrf-2 levels. The hippocampal expression of PKA, phosphorylated cAMP response element-binding protein (CREB), and phosphorylated glycogen synthase 3β (Ser389) were also evaluated. RESULTS SD caused a significant decrease in cAMP levels in the brain and had a detrimental effect on learning and memory. The administration of rolipram or rolipram+CHA resulted in an improvement in cognitive function. CONCLUSION The present study provides evidence that restoration of memory with PDE4 inhibitors occurs through a dual mechanism involving the PKA and Epac pathways.
Collapse
Affiliation(s)
- Ahmed Maher
- Biochemistry Department, Faculty of Pharmacy, October University for Modern Sciences and Arts (MSA), Cairo. Egypt
| | - Nesrine El Sayed
- Department of Pharmacology and Toxicology, Faculty of Pharmacy, Cairo University. Egypt
| | - Heba Nafea
- Biochemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo (GUC), Cairo. Egypt
| | - Mohamed Gad
- Biochemistry Department, Faculty of Pharmacy and Biotechnology, German University in Cairo (GUC), Cairo. Egypt
| |
Collapse
|
22
|
Zhao N, Su X, Li H, Li Z, Wang Y, Chen J, Zhuang W. Schisandrin B inhibits α-melanocyte-stimulating hormone-induced melanogenesis in B16F10 cells via downregulation of MAPK and CREB signaling pathways. Biosci Biotechnol Biochem 2021; 85:834-841. [PMID: 33580697 DOI: 10.1093/bbb/zbaa100] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2020] [Accepted: 12/03/2020] [Indexed: 12/18/2022]
Abstract
Schisandrin B (Sch B), a lignan compound in Schisandra, possesses antioxidant, anti-inflammatory, and antiobesity activities. The effect of Sch B on melanogenesis and molecular mechanisms are still unknown. Therefore, we aimed to investigate the antimelanogenic effects of Sch B on α-melanocyte-stimulating hormone-induced B16F10 cells and elucidate the underlying molecular mechanisms. We found that Sch B significantly suppressed melanin content and mushroom tyrosinase (TYR) activity. Sch B treatment decreased the expression of TYR, melanocyte-inducing transcription factor (MITF), tyrosinase-related protein (TRP) 1, and TRP2. Moreover, Sch B modulated the phosphorylation of p38, extracellular-regulated protein kinase, c-Jun N-terminal kinase, and cAMP-response element binding protein (CREB), implying that these pathways may be involved in suppressing melanogenesis. Furthermore, we found that Sch B decreased melanogenesis by downregulating MITF and melanogenic enzymes via MAPK and CREB pathways. Overall, these findings indicate that Sch B has the potential use in whitening.
Collapse
Affiliation(s)
- Na Zhao
- Department of Molecular Biology Test Technique, College of Medical Technology, Beihua University, Jilin, China
| | - Xiaoming Su
- Department of Molecular Biology Test Technique, College of Medical Technology, Beihua University, Jilin, China
| | - He Li
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, China
| | - Zhengyi Li
- Department of Clinical Examination Basis, Laboratory Academy, Jilin Medical University, Jilin, China
| | - Yueyang Wang
- Department of Molecular Biology Test Technique, College of Medical Technology, Beihua University, Jilin, China
| | - Jianguang Chen
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, China
| | - Wenyue Zhuang
- Department of Molecular Biology Test Technique, College of Medical Technology, Beihua University, Jilin, China
| |
Collapse
|
23
|
Novel Quercetin Derivative of 3,7-Dioleylquercetin Shows Less Toxicity and Highly Potent Tyrosinase Inhibition Activity. Int J Mol Sci 2021; 22:ijms22084264. [PMID: 33923988 PMCID: PMC8072539 DOI: 10.3390/ijms22084264] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2021] [Revised: 04/17/2021] [Accepted: 04/18/2021] [Indexed: 12/14/2022] Open
Abstract
Quercetin is a well-known plant flavonol and antioxidant; however, there has been some debate regarding the efficacy and safety of native quercetin as a skin-whitening agent via tyrosinase inhibition. Several researchers have synthesized quercetin derivatives as low-toxicity antioxidants and whitening agents. However, no suitable quercetin derivatives have been reported to date. In this study, a novel quercetin derivative was synthesized by the SN2 reaction using quercetin and oleyl bromide. The relationship between the structures and activities of quercetin derivatives as anti-melanogenic agents was assessed using in vitro enzyme kinetics, molecular docking, and quenching studies; cell line experiments; and in vivo zebrafish model studies. Novel 3,7-dioleylquercetin (OQ) exhibited a low cytotoxic concentration level at >100 µg/mL (125 µM), which is five times less toxic than native quercetin. The inhibition mechanism showed that OQ is a competitive inhibitor, similar to native quercetin. Expression of tyrosinase, tyrosinase-related protein 1 (TRP-1) and tyrosinase-related protein 2 (TRP-2), and microphthalmia-associated transcription factor was inhibited in B16F10 melanoma cell lines. mRNA transcription levels of tyrosinase, TRP-1, and TRP-2 decreased in a dose-dependent manner. Melanin formation was confirmed in the zebrafish model using quercetin derivatives. Therefore, OQ might be a valuable asset for the development of novel skin-whitening agents.
Collapse
|
24
|
The Anti-Melanogenesis Effect of 3,4-Dihydroxybenzalacetone through Downregulation of Melanosome Maturation and Transportation in B16F10 and Human Epidermal Melanocytes. Int J Mol Sci 2021; 22:ijms22062823. [PMID: 33802228 PMCID: PMC7999661 DOI: 10.3390/ijms22062823] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 02/27/2021] [Accepted: 03/05/2021] [Indexed: 12/11/2022] Open
Abstract
The biosynthesis pathway of melanin is a series of oxidative reactions that are catalyzed by melanin-related proteins, including tyrosinase (TYR), tyrosinase-related protein-1 (TRP-1), and tyrosinase-related protein-2 (TRP-2). Reagents or materials with antioxidative or free radical-scavenging activities may be candidates for anti-melanogenesis. 3,4-Dihydroxybenzalacetone (DBL) is a polyphenol isolated from fungi, such as Phellinus obliguus (Persoon) Pilat and P. linteus. In this study, we investigated the effects and mechanisms of DBL on antioxidation and melanogenesis in murine melanoma cells (B16F10) and human epidermal melanocytes (HEMs). The results indicated that DBL scavenged 2,2-diphenyl-1-picrylhydrazyl (DPPH) and hydroxyl radicals, and exhibited potent reducing power, indicating that it displays strong antioxidative activity. DBL also inhibited the expression of TYR, TRP-1, TRP-2, and microphthalmia-related transcription factor (MITF) in both the cells. In addition, DBL inhibited hyperpigmentation in B16F10 and HEMs by regulating the cyclic adenosine monophosphate (cAMP)/protein kinase A (PKA), v-akt murine thymoma viral oncogene homolog (AKT)/glycogen synthase kinase 3 beta (GSK3β), and mitogen-activated protein kinase kinase (MEK)/extracellular regulated protein kinase (ERK) signaling pathways. DBL not only shortened dendritic melanocytes but also inhibited premelanosome protein 17 (PMEL17) expression, slowing down the maturation of melanosome transportation. These results indicated that DBL promotes anti-melanogenesis by inhibiting the transportation of melanosomes. Therefore, DBL is a potent antioxidant and depigmenting agent that may be used in whitening cosmetics.
Collapse
|
25
|
Choi MH, Lee MY, Yang SH, Shin HJ, Jeon YJ. Hydrophobic Fractions of Triticum aestivum L. Extracts Contain Polyphenols and Alleviate Inflammation by Regulating Nuclear Factor-kappa B. BIOTECHNOL BIOPROC E 2021. [DOI: 10.1007/s12257-020-0352-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
|
26
|
Zingiber mioga Extract Improves Moisturization and Depigmentation of Skin and Reduces Wrinkle Formation in UVB-Irradiated HRM-2 Hairless Mice. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11030976] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Here, we investigated the effects of Zingiber mioga extracts (FSH-ZM) on the moisturization and depigmentation of skin as well as wrinkle formation in UVB-irradiated HRM-2 hairless mice. The mice were divided into six groups as follows: normal control (NC), UVB-irradiated control (C), positive control 1 (PC1, L-ascorbic acid 200 mg/kg b.w.), positive control 2 (PC2, Arbutin 200 mg/kg b.w.), Z100 (FSH-ZM 100 mg/kg b.w.), and Z200 (FSH-ZM 200 mg/kg b.w.). The experiment spanned a period of 6 weeks. We found that FSH-ZM led to an increase in the expression of hyaluronan synthase 2, fibrillin-1, and elastin mRNAs, and showed improved skin hydration in HRM-2 hairless mice compared to that in the UVB-irradiated control group. Furthermore, FSH-ZM also inhibited the expression of inflammatory cytokines and wrinkle forming factors generated by UVB and reduced the formation of wrinkles in the test group relative to that in the control group by increasing collagen synthesis. Moreover, we found that FSH-ZM decreased the expression of melanogenesis factors, which improved depigmentation in UVB-irradiated hairless mice. These results suggest that Zingiber mioga can potentially be utilized to develop products aimed at improving skin moisturization and depigmentation and reducing wrinkle formation.
Collapse
|
27
|
Park EH, Kim HJ, Cha DS. Protective effects of black bamboo leaves on the glucose-induced toxicity in Caenorhabditis elegans. JOURNAL OF HERBMED PHARMACOLOGY 2021. [DOI: 10.34172/jhp.2021.25] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Introduction: Previous studies have suggested that high glucose (HG) condition shortens the lifespan of worms by increasing glycolytic flux followed by accelerating reactive oxygen species (ROS) production, termed glucose toxicity. This study was designed to investigate the protective effects of the leaves of black bamboo (Phyllostachys nigra var. henosis) on the HG-induced toxicity using Caenorhabditis elegans model system. Methods: To determine the effect of black bamboo leaf extract (BLE) against HG-induced toxicity, lifespan assay was carried out with wild-type and daf-16 null mutant worms under 2% glucose condition. The involvement of DAF-16 was further confirmed by observing fluorescence signal of transgenic mutant carrying DAF-16::GFP transgene. ROS levels and glucose concentration of worms were analyzed using fluorescent probe H2DCF-DA and glucose meter, respectively. Nile-red staining was carried out to evaluate the lipid storage of worms. Intercellular lipid accumulation was measured using Oil-Red O staining method. Results: BLE strongly extended the lifespan of worms under not only normal culture condition but also HG condition. Our additional studies suggested that DAF-16 activation was responsible for BLE-mediated longevity and protective action against glucose toxicity. In addition, HG-fed worms showed increased ROS generation, and it was completely normalized by BLE treatment. Moreover, BLE reduced body glucose concentration and lipid accumulation in HG-fed worms. We further confirmed the inhibitory effect of BLE on lipid storage under HG condition using 3T3-L1 adipocytes. Conclusion: These therapeutic values of BLE on glucose toxicity raise the possibility that BLE might have beneficial effects on the pathogenesis of diabetes mellitus.
Collapse
Affiliation(s)
- Eun Hye Park
- College of Pharmacy, Woosuk University, Jeonbuk 55338, Republic of Korea
| | - Hong Jun Kim
- Department of Korean Medicine, Woosuk University, Jeonbuk 55338, Republic of Korea
| | - Dong Seok Cha
- College of Pharmacy, Woosuk University, Jeonbuk 55338, Republic of Korea
| |
Collapse
|
28
|
Sapio L, Salzillo A, Ragone A, Illiano M, Spina A, Naviglio S. Targeting CREB in Cancer Therapy: A Key Candidate or One of Many? An Update. Cancers (Basel) 2020; 12:cancers12113166. [PMID: 33126560 PMCID: PMC7693618 DOI: 10.3390/cancers12113166] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2020] [Revised: 10/23/2020] [Accepted: 10/27/2020] [Indexed: 12/11/2022] Open
Abstract
Simple Summary Only 5% of all drug-related targets currently move from preclinical to clinical in cancer, and just some of them achieve patient’s bedside. Among others, intratumor heterogeneity and preclinical cancer model limitations actually represent the main reasons for this failure. Cyclic-AMP response element-binding protein (CREB) has been defined as a proto-oncogene in different tumor types, being involved in maintenance and progression. Due to its relevance in tumor pathophysiology, many CREB inhibitor compounds have been developed and tested over the years. Herein, we examine the current state-of-the-art of both CREB and CREB inhibitors in cancer, retracing some of the most significant findings of the last years. While the scientific statement confers on CREB a proactive role in cancer, its therapeutic potential is still stuck at laboratory bench. Therefore, pursuing every concrete result to achieve CREB inhibition in clinical might give chance and future to cancer patients worldwide. Abstract Intratumor heterogeneity (ITH) is considered the major disorienting factor in cancer treatment. As a result of stochastic genetic and epigenetic alterations, the appearance of a branched evolutionary shape confers tumor plasticity, causing relapse and unfavorable clinical prognosis. The growing evidence in cancer discovery presents to us “the great paradox” consisting of countless potential targets constantly discovered and a small number of candidates being effective in human patients. Among these, cyclic-AMP response element-binding protein (CREB) has been proposed as proto-oncogene supporting tumor initiation, progression and metastasis. Overexpression and hyperactivation of CREB are frequently observed in cancer, whereas genetic and pharmacological CREB downregulation affects proliferation and apoptosis. Notably, the present review is designed to investigate the feasibility of targeting CREB in cancer therapy. In particular, starting with the latest CREB evidence in cancer pathophysiology, we evaluate the advancement state of CREB inhibitor design, including the histone lysine demethylases JMJD3/UTX inhibitor GSKJ4 that we newly identified as a promising CREB modulator in leukemia cells. Moreover, an accurate analysis of strengths and weaknesses is also conducted to figure out whether CREB can actually represent a therapeutic candidate or just one of the innumerable preclinical cancer targets.
Collapse
|
29
|
Huang JW, Xu QY, Lin M, Cheng B, Ji C. The Extract from Acidosasa longiligula Alleviates in vitro UV-Induced Skin Cell Damage via Positive Regulation of Thioredoxin 1. Clin Interv Aging 2020; 15:897-905. [PMID: 32606631 PMCID: PMC7306462 DOI: 10.2147/cia.s239920] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2019] [Accepted: 05/29/2020] [Indexed: 11/23/2022] Open
Abstract
Introduction Skin, as the outermost organ, is exposed to a wide range of environmental risk factors including ultraviolet (UV) and all kinds of pollutants. Excessive UV exposure contributes to many disorders, such as photoaging, skin inflammation, and carcinogenesis. Methods To determine the effects of bamboo extract (BEX) from our local plant, Acidosasa longiligula, on UV-irritated human skin, we conducted a variety of studies, including Western blot, apoptosis assays, reactive oxygen species (ROS) detection, and thioredoxin (TXN) and thioredoxin reductase (TXNRD) activity assays in primary skin keratinocytes. Results We first determined that BEX protects human skin keratinocytes against UV radiation-induced apoptosis and ROS production. UV radiation can robustly impair TXN and TXNRD activity which can, in turn, be significantly rescued by BEX treatment. Moreover, BEX regulates TXN1 levels in primary skin keratinocytes and TXN1 is proved to be required for the protective function of BEX. Last, we found that the NF-κB/p65 pathway mediates the protective function of BEX against UV. Discussion Collectively, our work delineates the beneficial role of BEX in UV-induced skin cell damage and provides a novel therapeutic reagent to prevent or alleviate the progress of photoaging and other UV-provoked skin diseases.
Collapse
Affiliation(s)
- Jin-Wen Huang
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, People's Republic of China
| | - Qiu-Yun Xu
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, People's Republic of China
| | - Min Lin
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, People's Republic of China
| | - Bo Cheng
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, People's Republic of China
| | - Chao Ji
- Department of Dermatology, The First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian 350005, People's Republic of China
| |
Collapse
|
30
|
Zhang X, Li J, Li Y, Liu Z, Lin Y, Huang JA. Anti-melanogenic effects of epigallocatechin-3-gallate (EGCG), epicatechin-3-gallate (ECG) and gallocatechin-3-gallate (GCG) via down-regulation of cAMP/CREB /MITF signaling pathway in B16F10 melanoma cells. Fitoterapia 2020; 145:104634. [PMID: 32454171 DOI: 10.1016/j.fitote.2020.104634] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2020] [Revised: 05/17/2020] [Accepted: 05/19/2020] [Indexed: 12/31/2022]
Abstract
Tea catechins, the main bioactive polyphenols in green tea, are well known for their health promoting effects. Previous studies have shown that gallocatechin-3-gallate (GCG), epigallocatechin-3-gallate (EGCG) and epicatechin-3-gallate (ECG) exerted strong inhibitory effects on mushroom tyrosinase activity in vitro, whilst EGCG inhibited melanogenesis in vivo, yet the underlying mechanisms are not entirely clear. In this study, we (i) evaluated and compared the inhibitory effects of the main tea catechins (GCG, EGCG, and ECG) on melanogenesis in B16F10 melanoma cells, and (ii) explain the underlying mechanisms. The results showed that the tea catechins significantly suppressed tyrosinase activity and melanin synthesis in B16F10 cells, where the effects of ECG > EGCG > GCG. Interestingly, the inhibitory effects of the catechins were stronger than those of arbutin (AT), a well-known depigmenting agent. Moreover, GCG, EGCG, and ECG regulated the melanogenesis of B16F10 cells through the cAMP/CREB/MITF pathway. These results revealed catechins could be used as anti-melanogenic agents to protect cells from abnormal melanogenesis.
Collapse
Affiliation(s)
- Xiangna Zhang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, China
| | - Juan Li
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, China; National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, China; Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, China
| | - Yinhua Li
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, China; National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, China; Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, China
| | - Zhonghua Liu
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, China; National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, China; Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, China
| | - Yong Lin
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, China; National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, China; Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, China.
| | - Jian-An Huang
- Key Laboratory of Tea Science of Ministry of Education, Hunan Agricultural University, Changsha, China; National Research Center of Engineering Technology for Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, China; Collaborative Innovation Centre of Utilization of Functional Ingredients from Botanicals, Hunan Agricultural University, Changsha, China.
| |
Collapse
|
31
|
Qian W, Liu W, Zhu D, Cao Y, Tang A, Gong G, Su H. Natural skin-whitening compounds for the treatment of melanogenesis (Review). Exp Ther Med 2020; 20:173-185. [PMID: 32509007 PMCID: PMC7271691 DOI: 10.3892/etm.2020.8687] [Citation(s) in RCA: 63] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 03/17/2020] [Indexed: 01/23/2023] Open
Abstract
Melanogenesis is the process for the production of melanin, which is the primary cause of human skin pigmentation. Skin-whitening agents are commercially available for those who wish to have a lighter skin complexions. To date, although numerous natural compounds have been proposed to alleviate hyperpigmentation, insufficient attention has been focused on potential natural skin-whitening agents and their mechanism of action from the perspective of compound classification. In the present article, the synthetic process of melanogenesis and associated core signaling pathways are summarized. An overview of the list of natural skin-lightening agents, along with their compound classifications, is also presented, where their efficacy based on their respective mechanisms of action on melanogenesis is discussed.
Collapse
Affiliation(s)
- Wenhui Qian
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China.,School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Wenya Liu
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Dong Zhu
- School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Yanli Cao
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Anfu Tang
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Guangming Gong
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| | - Hua Su
- Department of Pharmaceutics, Jinling Hospital, Nanjing University School of Medicine, Nanjing, Jiangsu 210002, P.R. China
| |
Collapse
|
32
|
Han HJ, Park SK, Kang JY, Kim JM, Yoo SK, Heo HJ. Anti-Melanogenic Effect of Ethanolic Extract of Sorghum bicolor on IBMX-Induced Melanogenesis in B16/F10 Melanoma Cells. Nutrients 2020; 12:nu12030832. [PMID: 32245029 PMCID: PMC7146600 DOI: 10.3390/nu12030832] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2020] [Revised: 03/12/2020] [Accepted: 03/18/2020] [Indexed: 12/29/2022] Open
Abstract
To evaluate possibility as a skin whitening agent of Sorghum bicolor (S. bicolor), its antioxidant activity and anti-melanogenic effect on 3-isobutyl-1-methylxanthine (IBMX)-induced melanogenesis in B16/F10 melanoma cells were investigated. The result of total phenolic contents (TPC) indicated that 60% ethanol extract of S. bicolor (ESB) has the highest contents than other ethanol extracts. Antioxidant activity was evaluated using the 2,2'-azino-bis-(3-ethylbenzothiazolin-6-sulfonic acid) diammonium salt (ABTS)/1,1-diphenyl-2-picryl-hydrazyl (DPPH) radical scavenging activities and malondialdehyde (MDA) inhibitory effect. These results showed ESB has significant antioxidant activities. Inhibitory effect against tyrosinase was also assessed using L-tyrosine (IC50 value = 89.25 μg/mL) and 3,4-dihydroxy-L-phenylalanine (L-DOPA) as substrates. In addition, ESB treatment effectively inhibited melanin production in IBMX-induced B16/F10 melanoma cells. To confirm the mechanism on anti-melanogenic effect of ESB, we examined melanogenesis-related proteins. ESB downregulated melanogenesis by decreasing expression of microphthalmia-associated transcription factor (MITF), tyrosinase and tyrosinase-related protein (TRP)-1. Finally, 9-hydroxyoctadecadienoic acid (9-HODE), 1,3-O-dicaffeoylglycerol and tricin as the main compounds of ESB were analyzed using the ultra-performance liquid chromatography-ion mobility separation-quadrupole time of flight/tandem mass spectrometry (UPLC-IMS-QTOF/MS2). These findings suggest that ESB may have physiological potential to be used skin whitening material.
Collapse
|
33
|
Abstract
Background Catechins, which are polyphenol compounds found in many plants and are an important component of tea leaves, are strong anti-oxidants. Research Many studies seek to enhance the effects of catechins on the human body and boost their protective power against UV radiation. There are many examples of the positive anti-microbial, anti-viral, anti-inflammatory, anti-allergenic, and anti-cancer effects of catechins. Catechins increase the penetration and absorption of healthy functional foods and bio cosmetics into the body and the skin, thus improving their utility. High value-added anti-oxidant substances have been extracted from food and plant sludge, and experiments have shown that catechins are safe when applied to the human body. The stability of catechins is very important for their absorption into the human body and the effectiveness of their anti-oxidant properties. Conclusion Continued research on the strong anti-oxidant effects of catechins is expected to result in many advances in the food, cosmetics, and pharmaceutical industries.
Collapse
|
34
|
Nguyen JK, Masub N, Jagdeo J. Bioactive ingredients in Korean cosmeceuticals: Trends and research evidence. J Cosmet Dermatol 2020; 19:1555-1569. [DOI: 10.1111/jocd.13344] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Accepted: 02/10/2020] [Indexed: 11/27/2022]
Affiliation(s)
- Julie K. Nguyen
- Department of Dermatology SUNY Downstate Medical Center Brooklyn NY USA
- Dermatology Service VA New York Harbor Healthcare System – Brooklyn Campus Brooklyn NY USA
| | - Natasha Masub
- Department of Dermatology SUNY Downstate Medical Center Brooklyn NY USA
- Dermatology Service VA New York Harbor Healthcare System – Brooklyn Campus Brooklyn NY USA
| | - Jared Jagdeo
- Department of Dermatology SUNY Downstate Medical Center Brooklyn NY USA
- Dermatology Service VA New York Harbor Healthcare System – Brooklyn Campus Brooklyn NY USA
| |
Collapse
|
35
|
Zhao N, Su X, Wang Y, Chen J, Zhuang W. Traditional Chinese Herbal Medicine for Whitening. Nat Prod Commun 2020. [DOI: 10.1177/1934578x20905148] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Melanin is the chief pigment responsible for the pigmentation of human skin. Increasing evidence indicates that traditional Chinese drugs with skin-whitening effects are attracting the attention of consumers and researchers because they are perceived to be milder, safer, and healthier than synthetic alternatives. This commentary summarizes the current research on Chinese herbal medicines that inhibit melanin and their biological activities. The findings presented in this study suggest that these traditional Chinese herbal medicines might be potential candidates for novel skin-whitening agents.
Collapse
Affiliation(s)
- Na Zhao
- Department of Molecular Biology Test Technique, College of Medical Technology, Beihua University, Jilin, China
| | - Xiaoming Su
- Department of Molecular Biology Test Technique, College of Medical Technology, Beihua University, Jilin, China
| | - Yueyang Wang
- Department of Molecular Biology Test Technique, College of Medical Technology, Beihua University, Jilin, China
| | - Jianguang Chen
- Department of Pharmacology, College of Pharmacy, Beihua University, Jilin, China
| | - Wenyue Zhuang
- Department of Molecular Biology Test Technique, College of Medical Technology, Beihua University, Jilin, China
| |
Collapse
|
36
|
Ma NH, Guo J, Xu Chen SH, Yuan XR, Zhang T, Ding Y. Antioxidant and Compositional HPLC Analysis of Three Common Bamboo Leaves. Molecules 2020; 25:molecules25020409. [PMID: 31963759 PMCID: PMC7024249 DOI: 10.3390/molecules25020409] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2019] [Revised: 01/14/2020] [Accepted: 01/15/2020] [Indexed: 12/03/2022] Open
Abstract
Bamboo leaves of Phyllostachys nigra (PN), Lophatherum gracile (LG), and Pleioblastus amarus (PA) are three common herbs in China. In this work, a new high performance liquid chromatography (HPLC) method for the simultaneous determination of seven compounds in bamboo leaves has been developed; and PN, LG, and PA leaves were analyzed. PN showed four times as much chlorogenic acid (CA) than the other two, and contained the most isoorientin (iso-ORI) and isovitexin (iso-VIT) as well. The PA presented the most orientin (ORI) and LG covered a majority of cynaroside (CYN). We measured the antioxidant activity by scavenging the stable 2,2-diphenyl-1-pyridinohydrazinyl (DPPH) free radicals, and found that Luteolin (inhibitory concentration (IC)50 = 0.42 µM, LUT) and CYN (IC50 = 0.43 µM) showed 2–3 times higher antioxidant activity than iso-ORI (IC50 = 0.81 µM), ORI (IC50 = 0.84 µM), and other related antioxidant standards such as trolox (IC50 = 0.97 µM) and ascorbic acid (IC50 = 0.93 µM, VC). Among extracts, PN and PA showed considerable antioxidant activity, which was related well with the contents of CA, iso-ORI, and iso-VIT (p < 0.05). This study firstly provides evidence for functional antioxidant compounds of bamboo leaves based on statistical analysis of the HPLC analysis and DPPH assay, and it lays a foundation for its further development or utilization.
Collapse
Affiliation(s)
- Ning-Hui Ma
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (N.-H.M.); (J.G.); (S.-H.X.C.)
| | - Jing Guo
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (N.-H.M.); (J.G.); (S.-H.X.C.)
| | - Si-Han Xu Chen
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (N.-H.M.); (J.G.); (S.-H.X.C.)
| | - Xiu-Rong Yuan
- Technology Transfer Center, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China;
| | - Tong Zhang
- Experiment Center for Teaching and Learning, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China;
| | - Yue Ding
- School of Pharmacy, Shanghai University of Traditional Chinese Medicine, Shanghai 201203, China; (N.-H.M.); (J.G.); (S.-H.X.C.)
- Correspondence: ; Tel.: +86-021-5132-2325
| |
Collapse
|
37
|
Boo YC. p-Coumaric Acid as An Active Ingredient in Cosmetics: A Review Focusing on its Antimelanogenic Effects. Antioxidants (Basel) 2019; 8:E275. [PMID: 31382682 PMCID: PMC6720745 DOI: 10.3390/antiox8080275] [Citation(s) in RCA: 104] [Impact Index Per Article: 20.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2019] [Revised: 08/01/2019] [Accepted: 08/02/2019] [Indexed: 12/16/2022] Open
Abstract
Controlling unwanted hyperpigmentation is a major challenge in dermatology and cosmetology, and safe and efficacious antimelanogenic agents are deemed useful for this purpose. p-Coumaric acid is a natural metabolite contained in many edible plants, and its antioxidant activities in reducing oxidative stress and inflammatory reactions have been demonstrated in various experimental models. p-Coumaric acid has the optimal structure to be a competitive inhibitor of tyrosinase that catalyzes key reactions in the melanin biosynthetic pathway. Experimental evidence supports this notion as it was found to be a more potent inhibitor of tyrosinase, especially toward human enzymes, than other well-known tyrosinase inhibitors such as arbutin and kojic acid. p-Coumaric acid inhibited melanin synthesis in murine melanoma cells, human epidermal melanocytes, and reconstituted three-dimensional human skin models. Ex-vivo skin permeation experiments and in-vivo efficacy tests for p-coumaric acid confirmed its efficient transdermal delivery and functional efficacy in reducing erythema development and skin pigmentation due to ultraviolet radiation exposure. Human studies further supported its effectiveness in hypopigmentation and depigmentation. These findings suggest that p-coumaric acid has good potential to be used as a skin-lightening active ingredient in cosmetics. Future studies are needed to extensively examine its safety and efficacy and to develop an optimized cosmetic formulation for the best performance in skin lightening.
Collapse
Affiliation(s)
- Yong Chool Boo
- Department of Molecular Medicine, School of Medicine, Kyungpook National University, Daegu 41944, Korea.
- BK21 Plus KNU Biomedical Convergence Program, Kyungpook National University, Daegu 41944, Korea.
- Cell and Matrix Research Institute, Kyungpook National University, Daegu 41944, Korea.
| |
Collapse
|
38
|
Pei S, Chen J, Lu J, Hu S, Jiang L, Lei L, Ouyang Y, Fu C, Ding Y, Li S, Kang L, Huang L, Xiang H, Xiao R, Zeng Q, Huang J. The Long Noncoding RNA UCA1 Negatively Regulates Melanogenesis in Melanocytes. J Invest Dermatol 2019; 140:152-163.e5. [PMID: 31276678 DOI: 10.1016/j.jid.2019.04.029] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2018] [Revised: 04/08/2019] [Accepted: 04/14/2019] [Indexed: 02/09/2023]
Abstract
The long noncoding RNA UCA1 was first discovered in bladder cancer and is known to regulate the proliferation and migration of melanoma. However, its role in melanogenesis is unclear. In this study, we aimed to explore the role and mechanism of UCA1 in melanogenesis. Our findings showed that the expression of UCA1 was negatively correlated with melanin content in melanocytes and pigmented nevus. Overexpression of UCA1 in melanocytes decreased melanin content and the expression of melanogenesis-related genes, whereas knockdown of UCA1 in melanocytes had the opposite effect. High-throughput sequencing revealed that microphthalmia-associated transcription factor (MITF), an important transcription factor affecting melanogenesis, was also negatively correlated with the expression of UCA1. Furthermore, the transcription factor CRE-binding protein (CREB), which promotes MITF expression, was negatively regulated by UCA1. The cAMP/protein kinase A (PKA), extracellular signal-regulated kinase (ERK), and c-Jun N-terminal kinase (JNK) signaling pathways, which are upstream of the CREB/MITF/melanogenesis axis, were activated or inhibited in response to silencing or enhancing UCA1 expression, respectively. In addition, enhanced UCA1 expression downregulates the expression of melanogenesis-related genes induced by UVB in melanocytes. In conclusion, UCA1 may negatively regulate the CREB/MITF/melanogenesis axis through inhibiting the cAMP/PKA, ERK, and JNK signaling pathways in melanocytes. UCA1 may be a potential therapeutic target for the treatment of pigmented skin diseases.
Collapse
Affiliation(s)
- Shiyao Pei
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jing Chen
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Jianyun Lu
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Shuanghai Hu
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Ling Jiang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Li Lei
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China; Hunan Key Laboratory of Skin Cancer and Psoriasis, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yujie Ouyang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Chuhan Fu
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Yufang Ding
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Si Li
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Liyang Kang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Lihua Huang
- Central Laboratory, Third Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Hong Xiang
- Central Laboratory, Third Xiangya Hospital of Central South University, Changsha, Hunan, China
| | - Rong Xiao
- Department of Dermatology, Second Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Qinghai Zeng
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
| | - Jinhua Huang
- Department of Dermatology, Third Xiangya Hospital, Central South University, Changsha, Hunan, China.
| |
Collapse
|
39
|
Liquiritin and Liquiritigenin Induce Melanogenesis via Enhancement of p38 and PKA Signaling Pathways. MEDICINES 2019; 6:medicines6020068. [PMID: 31234488 PMCID: PMC6631415 DOI: 10.3390/medicines6020068] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/21/2019] [Revised: 06/17/2019] [Accepted: 06/21/2019] [Indexed: 12/20/2022]
Abstract
Background: Liquiritin (LQ) and its aglycone, liquiritigenin (LQG), are major flavonoids in licorice root (Glycyrrhiza spp.). Our preliminary screening identified LQ and LQG, which promote melanin synthesis in the melanoma cells. In this study, we investigated the molecular mechanism of melanin synthesis activated by LQ and LQG. Methods: Murine (B16-F1) and human (HMVII) melanoma cell lines were treated with LQ or LQG. After incubation, melanin contents, intracellular tyrosinase activity, and cell viability were evaluated. Protein levels were determined using Western blotting. Results: LQ and LQG activated melanin synthesis and intracellular tyrosinase activity. The induction of melanin and intracellular tyrosinase activity by LQG was higher than that by LQ. LQ and LQG induced the expression of tyrosinase, tyrosinase-related protein (TRP)-1, and TRP-2. LQ and LQG also enhanced microphthalmia-associated transcription factor (MITF) expression, and cyclic AMP-responsive element-binding protein (CREB) phosphorylation. The phosphorylation of p38 and extracellular signal-regulated kinase (ERK), but not Akt, was significantly increased by LQ or LQG. Furthermore, LQ- or LQG-mediated melanin synthesis was partially blocked by p38 inhibitor (SB203580) and protein kinase A (PKA) inhibitor (H-89); however, ERK kinase (MEK) inhibitor (U0126) and phosphatidylinositol-3-kinase (PI3K) inhibitor (LY294002) had no effect. Conclusions: The results suggest that LQ and LQG enhance melanin synthesis by upregulating the expression of melanogenic enzymes, which were activated by p38 and PKA signaling pathways, leading to MITF expression and CREB phosphorylation.
Collapse
|
40
|
Fargesin inhibits melanin synthesis in murine malignant and immortalized melanocytes by regulating PKA/CREB and P38/MAPK signaling pathways. J Dermatol Sci 2019; 94:213-219. [PMID: 30956031 DOI: 10.1016/j.jdermsci.2019.03.004] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 03/21/2019] [Accepted: 03/24/2019] [Indexed: 12/21/2022]
Abstract
BACKGROUND Fargesin is commonly used in the treatment of allergic rhinitis, inflammation, sinusitis and headache. OBJECTIVE The aim of the study is to investigate a new function of fargesin against melanin production and its underlying molecular mechanism. METHODS B16F10 mouse melanoma cells, Melan-a and human epidermal melanocytes were treated with different concentrations of fargesin for the indicated time. The extracellular and cellular melanin content was detected by spectrometry at 490 nm and 405 nm, respectively. RT-qPCR and Western blot analysis were used to exam the expression of melanogenic enzymes and the activities of PKA/CREB and p38 MAPK pathway components. Zebrafish was used as an in vivo model for studying the function of fargesin in regulating melanogenesis. RESULTS Fargesin effectively inhibited melanin production at moderate dose in mouse B16F10 melanoma cells, normal melanocyte cell lines and zebrafish. The expression of microphthalmia-associated transcription factor (MITF), its downstream melanogenic enzymes and tyrosinase activity were also strongly reduced by fargesin. Moreover, the increase of melanin production induced by UVB and forskolin could be fully reversed by fargesin treatment. Fargesin also effectively inhibited the activation of PKA/CREB and p38 MAPK as well as their interactions, which in turn is responsible for the expression of MITF and melanogenic enzymes. CONCLUSIONS These results show that fargesin can function as an anti-melanogenic agent, at least in part, by inhibiting PKA/CREB and p38/MAPK signaling pathways. Therefore, fargesin and its derivatives may potentially be used for preventing hyperpigmentation disorders in the future.
Collapse
|
41
|
Bamboo Stems ( Phyllostachys nigra variety henosis) Containing Polyphenol Mixtures Activate Nrf2 and Attenuate Phenylhydrazine-Induced Oxidative Stress and Liver Injury. Nutrients 2019; 11:nu11010114. [PMID: 30626086 PMCID: PMC6357197 DOI: 10.3390/nu11010114] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/27/2018] [Revised: 12/28/2018] [Accepted: 01/01/2019] [Indexed: 12/12/2022] Open
Abstract
This study was designed to investigate the hepatoprotective effect of bamboo stems using in vitro and in vivo experimental liver damage models. Ethyl acetate fraction of 80% ethanol extract of Phyllostachys nigra stem (PN3) containing polyphenols had a higher NQO1-ARE reporter gene activity as monitored by the activity of the NF-E2-related factor (Nrf2) antioxidant pathway in cells in comparison to extracts from other species and under other conditions. The Nrf2 was translocated from the cytosol to the nucleus in response to PN3, followed by induction of the Nrf2 target gene expression, including HO-1, GCL, and NQO-1 in HepG2 cells. Phosphorylation of Nrf2 in HepG2 cells was enhanced in PN3, which was mediated by PKCδ, ERK, and p38 MAPK. Consequently, PN3 inhibited arachidonic acid (AA) + iron-induced reactive oxygen species generation and glutathione depletion, and, thus, highlighted their role in cytotoxicity. Treatment with major polyphenols of PN3, including catechin, chlorogenic acid, caffeic acid, and p-coumaric acid, also improved AA + iron-mediated oxidative stress and, thus, improved cell viability. Treatment with phenylhydrazine in mice, i.e., the iron overload liver injury model, increased plasma alanine aminotransferase and aspartate aminotransferase levels and changed histological features in mice—a response that was almost completely blocked by PN3 administration. Moreover, PN3 extract mitigated phenylhydrazine-induced oxidative stress and inflammatory responses. Conclusively, PN3 can exert a hepatoprotective effect against iron overload-induced acute liver damage due to its antioxidant properties.
Collapse
|
42
|
Skin Pigmentation: Is the Control of Melanogenesis a Target within Reach? Int J Mol Sci 2018; 19:ijms19124040. [PMID: 30558112 PMCID: PMC6320957 DOI: 10.3390/ijms19124040] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2018] [Accepted: 12/11/2018] [Indexed: 12/12/2022] Open
|