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Wu Y, Yang Y, Lin Y, Ding Y, Liu Z, Xiang L, Picardo M, Zhang C. Emerging Role of Fibroblasts in Vitiligo: A Formerly Underestimated Rising Star. J Invest Dermatol 2024; 144:1696-1706. [PMID: 38493384 DOI: 10.1016/j.jid.2024.02.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2023] [Revised: 01/29/2024] [Accepted: 02/05/2024] [Indexed: 03/18/2024]
Abstract
Vitiligo is a disfiguring depigmentation disorder characterized by loss of melanocytes. Although numerous studies have been conducted on the pathogenesis of vitiligo, the underlying mechanisms remain unclear. Although most studies have focused on melanocytes and keratinocytes, growing evidence suggests the involvement of dermal fibroblasts, residing deeper in the skin. This review aims to elucidate the role of fibroblasts in both the physiological regulation of skin pigmentation and their pathological contribution to depigmentation, with the goal of shedding light on the involvement of fibroblasts in vitiligo. The topics covered in this review include alterations in the secretome, premature senescence, autophagy dysfunction, abnormal extracellular matrix, autoimmunity, and metabolic changes.
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Affiliation(s)
- Yue Wu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yiwen Yang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yi Lin
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Yuecen Ding
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Ziqi Liu
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Leihong Xiang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China
| | - Mauro Picardo
- Istituto Dermopatico Immacolata (IDI)- Istituto di Ricovero e Cura a Carattere Scientifico (RCCS), Rome, Italy.
| | - Chengfeng Zhang
- Department of Dermatology, Huashan Hospital, Fudan University, Shanghai, People's Republic of China.
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2
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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; 23:1209-1215. [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] [MESH Headings] [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.
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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.
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3
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Sevilla A, Grichnik J. Therapeutic modulation of KIT ligand in melanocytic disorders with implications for mast cell diseases. Exp Dermatol 2024; 33:e15091. [PMID: 38711220 DOI: 10.1111/exd.15091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2023] [Revised: 04/18/2024] [Accepted: 04/19/2024] [Indexed: 05/08/2024]
Abstract
KIT ligand and its associated receptor KIT serve as a master regulatory system for both melanocytes and mast cells controlling survival, migration, proliferation and activation. Blockade of this pathway results in cell depletion, while overactivation leads to mastocytosis or melanoma. Expression defects are associated with pigmentary and mast cell disorders. KIT ligand regulation is complex but efficient targeting of this system would be of significant benefit to those suffering from melanocytic or mast cell disorders. Herein, we review the known associations of this pathway with cutaneous diseases and the regulators of this system both in skin and in the more well-studied germ cell system. Exogenous agents modulating this pathway will also be presented. Ultimately, we will review potential therapeutic opportunities to help our patients with melanocytic and mast cell disease processes potentially including vitiligo, hair greying, melasma, urticaria, mastocytosis and melanoma.
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Affiliation(s)
- Alec Sevilla
- Department of Dermatology, New York Medical College, New York, New York, USA
- Department of Internal Medicine, Lakeland Regional Health, Lakeland, Florida, USA
| | - James Grichnik
- Department of Dermatology and Cutaneous Surgery, Morsani College of Medicine, University of South Florida, Tampa, Florida, USA
- Department of Cutaneous Oncology, Moffitt Cancer Center, Tampa, Florida, USA
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4
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Li Y, Zeng Y, Chen Z, Tan X, Mei X, Wu Z. The role of aryl hydrocarbon receptor in vitiligo: a review. Front Immunol 2024; 15:1291556. [PMID: 38361944 PMCID: PMC10867127 DOI: 10.3389/fimmu.2024.1291556] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2023] [Accepted: 01/18/2024] [Indexed: 02/17/2024] Open
Abstract
Vitiligo is an acquired autoimmune dermatosis characterized by patchy skin depigmentation, causing significant psychological distress to the patients. Genetic susceptibility, environmental triggers, oxidative stress, and autoimmunity contribute to melanocyte destruction in vitiligo. Due to the diversity and complexity of pathogenesis, the combination of inhibiting melanocyte destruction and stimulating melanogenesis gives the best results in treating vitiligo. The aryl hydrocarbon receptor (AhR) is a ligand-activated transcription factor that can regulate the expression of various downstream genes and play roles in cell differentiation, immune response, and physiological homeostasis maintenance. Recent studies suggested that AhR signaling pathway was downregulated in vitiligo. Activation of AhR pathway helps to activate antioxidant pathways, inhibit abnormal immunity response, and upregulate the melanogenesis gene, thereby protecting melanocytes from oxidative stress damage, controlling disease progression, and promoting lesion repigmentation. Here, we review the relevant literature and summarize the possible roles of the AhR signaling pathway in vitiligo pathogenesis and treatment, to further understand the links between the AhR and vitiligo, and provide new potential therapeutic strategies.
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Affiliation(s)
- Yiting Li
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Yibin Zeng
- Department of Dermatology, Minhang Hospital, Fudan University, Shanghai, China
| | - Zile Chen
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xi Tan
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xingyu Mei
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhouwei Wu
- Department of Dermatology, Shanghai General Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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5
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Zheng PH, Lu YP, Zhang XX, Luan KE, Zhang ZL, Li JJ, Xu T, Li JT, Xian JA, Guo H, Wang AL. New insights into the regulation mechanism of Pacific white shrimp (Litopenaeus vannamei) hepatopancreas under 4-nonylphenol exposure using transcriptome analysis. FISH & SHELLFISH IMMUNOLOGY 2023; 141:109050. [PMID: 37666313 DOI: 10.1016/j.fsi.2023.109050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 08/28/2023] [Accepted: 09/01/2023] [Indexed: 09/06/2023]
Abstract
4-Nonylphenol (4-NP) is one of the common endocrine-disrupting chemicals (EDCs) in estuaries and coastal zones, which can exert detrimental effects on the physiological function of aquatic organisms. However, the molecular response triggered by 4-NP remains largely unknown in Pacific white shrimp (Litopenaeus vannamei). In this study, transcriptomic analysis was performed to investigate the underlying mechanisms of 4-NP toxicity in the hepatopancreas of L. vannamei. Nine RNA-Seq libraries were generated from L. vannamei at 0 h, 24 h, and 48 h following exposure to 4-NP. Compared with 0 h vs 24 h, 962 up- and 463 down-regulated differentially expressed genes (DEGs) were identified, indicating that many genes in L. vannamei were induced to resist adverse circumstances by 4-NP exposure. In contrast, 902 up- and 1027 down-regulated DEGs were revealed in the comparison of 0 h vs 48 h, demonstrating that prolonged exposure to the stress from 4-NP resulted in more inhibited genes. To validate the accuracy of the transcriptome data, eight DEGs were selected for quantitative real-time polymerase chain reaction (qRT-PCR), which were consistent with the RNA-Seq results. Through KEGG pathway enrichment analysis, three specific pathways related to hormonal effects and endocrine function of L. vannamei were enriched significantly, including tyrosine metabolism, insect hormone biosynthesis, and melanogenesis. After 4-NP stress, genes involved in tyrosine metabolism (Tyr) and melanogenesis pathway (AC, CBP, Wnt, Frizzled, Tcf, and Ras) were induced to promote melanin pigment to help shrimp resist adverse environments. In the insect hormone biosynthesis, ALDH, CYP15A1, CYP15A1/C1, and JHE genes were activated to synthesize juvenile hormone (JH), while Spook, Phm, Sad, and CYP18A1 were induced to generate molting hormone. There is an enhanced interaction between the molting hormone and JH, with JH playing a dominant role and maintaining its "classic status quo action". Our study demonstrated that 4-NP exposure led to impairments of biological functions in L. vannamei hepatopancreas. The genes and pathways identified provide novel insights into the molecular mechanisms underlying 4-NP toxicity effects in prawns and enrich the information on the toxicity mechanism of crustaceans in response to EDCs exposure.
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Affiliation(s)
- Pei-Hua Zheng
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, PR China
| | - Yao-Peng Lu
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, PR China
| | - Xiu-Xia Zhang
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, PR China
| | - Ke-Er Luan
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, PR China
| | - Ze-Long Zhang
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, PR China
| | - Jia-Jun Li
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, PR China
| | - Tong Xu
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, PR China
| | - Jun-Tao Li
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, PR China
| | - Jian-An Xian
- Hainan Provincial Key Laboratory for Functional Components Research and Utilization of Marine Bio-resources, Institute of Tropical Biosciences and Biotechnology, Chinese Academy of Tropical Agricultural Sciences & Key Laboratory for Biology and Genetic Resources of Tropical Crops of Hainan Province, Hainan Institute of Tropical Agricultural Resources, Haikou, 571101, PR China.
| | - Hui Guo
- Guangdong South China Sea Key Laboratory of Aquaculture for Aquatic Economic Animals, College of Fisheries, Guangdong Ocean University, Zhanjiang, 524025, PR China.
| | - An-Li Wang
- School of Life Sciences, South China Normal University, Guangzhou, 510631, PR China.
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Ishida T, Morisawa S, Jobu K, Kawada K, Yoshioka S, Miyamura M. Atractylodes lancea rhizome derived exosome-like nanoparticles prevent alpha-melanocyte stimulating hormone-induced melanogenesis in B16-F10 melanoma cells. Biochem Biophys Rep 2023; 35:101530. [PMID: 37637942 PMCID: PMC10458288 DOI: 10.1016/j.bbrep.2023.101530] [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: 12/09/2022] [Revised: 08/10/2023] [Accepted: 08/10/2023] [Indexed: 08/29/2023] Open
Abstract
Aberrant melanin overproduction can significantly impact an individual's appearance and cause mental and psychological distress. Current inhibitors of melanin production exert harmful side effects due to inadequate selectivity; thus a need to develop more selective melanin synthesis inhibitors is necessary. Extracellular vesicles are important agents of intercellular signalling in prokaryotes and eukaryotes. Recently, plant-derived nanoparticles, similar to mammalian exosomes, have attracted attention for their use in health research. In this study, to investigate the potential of plant-derived exosome-like nanoparticles (ELNs) as inhibitors of melanin production, we used hot water to extract ELNs from the rhizome of Atractylodes lancea (A-ELNs). The size of A-ENLs ranged from 34 to 401 nm and carried three microRNA: ath-miR166f, ath-miR162a-5p, and ath-miR162b-5p. These A-ENLs were applied to B16-F10 melanoma cells treated with α-melanocyte-stimulating hormone (α-MSH). After A-ELNs were taken up by B16-F10 cells, their melanin levels were significantly reduced. Furthermore, A-ELNs significantly reduced tyrosinase activity in B16-F10 cells and mRNA expression of microphthalmia-associated transcription factor (Mitf), tyrosinase, tyrosinase-related protein 1, and DOPA chrome tautomerase. These results suggest that A-ELN suppresses melanogenic enzymes expression by downregulating Mitf, thereby inhibiting melanin synthesis. Hence, A-ELN can be developed into a novel topical drug after additional studies and optimization.
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Affiliation(s)
- Tomoaki Ishida
- Department of Pharmacy, Kochi Medical School Hospital, 185-1 Kohasu, Oko, Nankoku, Kochi, Japan
| | - Shumpei Morisawa
- Department of Pharmacy, Kochi Medical School Hospital, 185-1 Kohasu, Oko, Nankoku, Kochi, Japan
| | - Kohei Jobu
- Department of Pharmacy, Kochi Medical School Hospital, 185-1 Kohasu, Oko, Nankoku, Kochi, Japan
| | - Kei Kawada
- Department of Pharmacy, Kochi Medical School Hospital, 185-1 Kohasu, Oko, Nankoku, Kochi, Japan
- Graduate School of Integrated Arts and Sciences, Kochi University, 185-1 Kohasu, Oko, Nankoku, Kochi, Japan
| | - Saburo Yoshioka
- Department of Pharmacy, Kochi Medical School Hospital, 185-1 Kohasu, Oko, Nankoku, Kochi, Japan
- Graduate School of Integrated Arts and Sciences, Kochi University, 185-1 Kohasu, Oko, Nankoku, Kochi, Japan
| | - Mitsuhiko Miyamura
- Department of Pharmacy, Kochi Medical School Hospital, 185-1 Kohasu, Oko, Nankoku, Kochi, Japan
- Graduate School of Integrated Arts and Sciences, Kochi University, 185-1 Kohasu, Oko, Nankoku, Kochi, Japan
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Phansuk K, Vachiramon V, Jurairattanaporn N, Chanprapaph K, Rattananukrom T. Dermal Pathology in Melasma: An Update Review. Clin Cosmet Investig Dermatol 2022; 15:11-19. [PMID: 35023942 PMCID: PMC8747646 DOI: 10.2147/ccid.s343332] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2021] [Accepted: 11/29/2021] [Indexed: 11/23/2022]
Abstract
BACKGROUND Melasma is a complex and multipathophysiological condition that is challenging to treat. The roles of each element in the dermis were highlighted in this recent year due to targeting it with emerging therapies. Although some studies have demonstrated abnormal findings in the dermis of melasma lesions, there are no integrated data regarding these findings. PURPOSE This article aims to discuss each finding in the dermis of melasma lesions and to provide some ideas about treatment options. METHODS An Internet search was completed using the MEDLINE, Embase, Scopus, and Google Scholar databases for relevant literature through June 2021 and reference lists of respective articles. Only the articles published in English language were included. RESULTS Several studies have focused on the dermal changes in melasma. Common findings included basement membrane disruption, pendulous melanocytes, marked solar elastosis, increased melanophages, increased mast cells, and neovascularization. In addition, each of them had the specified mechanism that may relate with the others. CONCLUSION Several changes in the dermis of melasma lesion may be connected with pathological changes in the epidermis. This may serve as a potential target treatment for melasma, which requires a multimodal approach.
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Affiliation(s)
- Kachanat Phansuk
- Division of Dermatology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Vasanop Vachiramon
- Division of Dermatology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Natthachat Jurairattanaporn
- Division of Dermatology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Kumutnart Chanprapaph
- Division of Dermatology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
| | - Teerapong Rattananukrom
- Division of Dermatology, Department of Medicine, Faculty of Medicine Ramathibodi Hospital, Mahidol University, Bangkok, Thailand
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Kuroda Y, Yang L, Lai S, Guo J, Sayo T, Takahashi Y, Tsuruta D, Katayama I. A Lower Irradiation Dose of 308 nm Monochromatic Excimer Light Might Be Sufficient for Vitiligo Treatment: A Novel Insight Gained from In Vitro and In Vivo Analyses. Int J Mol Sci 2021; 22:ijms221910409. [PMID: 34638746 PMCID: PMC8508796 DOI: 10.3390/ijms221910409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2021] [Revised: 09/23/2021] [Accepted: 09/24/2021] [Indexed: 11/16/2022] Open
Abstract
A 308 nm monochromatic excimer light (MEL) is widely used to treat patients with vitiligo. However, dose optimization still needs to be clarified. This study aimed to obtain objective evidence regarding various doses of MEL irradiation, induced cell level changes in vitro, and skin level alterations in vivo. Cultured human keratinocytes were irradiated with MEL using various doses. After irradiation at low doses, stem cell factor, endothelin-1, and glycoprotein nonmetastatic melanoma protein B, factors that activate and protect melanocytes, were found to be significantly elevated in keratinocytes. After irradiation using medium and high doses, inflammatory cytokines were induced. The amount of ATP released and the level of inflammasome activation, which are known to be related to interleukin-1β activation, were also increased. The back skin of guinea pigs and mice were irradiated with MEL at varying doses. After irradiation, an increase of epidermal melanin and epidermal melanocytes was confirmed, using the minimal erythemal dose or less. In rhododendrol-induced leukoderma guinea pigs, a much lower dose of MEL irradiation was effective, when compared with the effective dose for control guinea pigs. Our results suggest that a lower irradiation dose of MEL might be sufficient and more suitable for repigmentation in vitiligo treatment.
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Affiliation(s)
- Yasutaka Kuroda
- Department of Pigmentation Research and Therapeutics, Graduate School of Medicine, Osaka City University, Osaka 5450051, Japan; (Y.K.); (S.L.); (J.G.); (T.S.); (Y.T.); (I.K.)
- Biological Science Research Laboratories, Kao Corporation, Odawara 2500002, Japan
| | - Lingli Yang
- Department of Pigmentation Research and Therapeutics, Graduate School of Medicine, Osaka City University, Osaka 5450051, Japan; (Y.K.); (S.L.); (J.G.); (T.S.); (Y.T.); (I.K.)
- Correspondence: ; Tel.: +81-6-6556-7618
| | - Sylvia Lai
- Department of Pigmentation Research and Therapeutics, Graduate School of Medicine, Osaka City University, Osaka 5450051, Japan; (Y.K.); (S.L.); (J.G.); (T.S.); (Y.T.); (I.K.)
| | - Jiao Guo
- Department of Pigmentation Research and Therapeutics, Graduate School of Medicine, Osaka City University, Osaka 5450051, Japan; (Y.K.); (S.L.); (J.G.); (T.S.); (Y.T.); (I.K.)
| | - Tetsuya Sayo
- Department of Pigmentation Research and Therapeutics, Graduate School of Medicine, Osaka City University, Osaka 5450051, Japan; (Y.K.); (S.L.); (J.G.); (T.S.); (Y.T.); (I.K.)
- Biological Science Research Laboratories, Kao Corporation, Odawara 2500002, Japan
| | - Yoshito Takahashi
- Department of Pigmentation Research and Therapeutics, Graduate School of Medicine, Osaka City University, Osaka 5450051, Japan; (Y.K.); (S.L.); (J.G.); (T.S.); (Y.T.); (I.K.)
- Biological Science Research Laboratories, Kao Corporation, Odawara 2500002, Japan
| | - Daisuke Tsuruta
- Department of Dermatology, Graduate School of Medicine, Osaka City University, Osaka 5458585, Japan;
| | - Ichiro Katayama
- Department of Pigmentation Research and Therapeutics, Graduate School of Medicine, Osaka City University, Osaka 5450051, Japan; (Y.K.); (S.L.); (J.G.); (T.S.); (Y.T.); (I.K.)
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9
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Li MY, Flora P, Pu H, Bar C, Silva J, Cohen I, Galbo PM, Liu H, Yu X, Jin J, Koseki H, D'Orazio JA, Zheng D, Ezhkova E. UV-induced reduction in Polycomb repression promotes epidermal pigmentation. Dev Cell 2021; 56:2547-2561.e8. [PMID: 34473941 PMCID: PMC8521440 DOI: 10.1016/j.devcel.2021.08.006] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2021] [Revised: 07/08/2021] [Accepted: 08/06/2021] [Indexed: 12/11/2022]
Abstract
Ultraviolet (UV) radiation is a prime environmental stressor that our epidermis is exposed to on a daily basis. To avert UV-induced damage, epidermal stem cells (EpSCs) become pigmented via a process of heterotypic interaction between melanocytes and EpSCs; however, the molecular mechanisms of this interaction are not well understood. In this study, we show that the function of a key chromatin regulator, the Polycomb complex, was reduced upon UV exposure in human and mouse epidermis. Genetic ablation of key Polycomb subunits in murine EpSCs, mimicking depletion upon UV exposure, results in an increased number of epidermal melanocytes and subsequent epidermal pigmentation. Genome-wide transcriptional and chromatin studies show that Polycomb regulates the expression of UV-responsive genes and identifies type II collagen (COL2A1) as a critical secreted regulator of melanogenesis and epidermal pigmentation. Together, our findings show how UV exposure induces Polycomb-mediated changes in EpSCs to affect melanocyte behavior and promote epidermal pigmentation.
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Affiliation(s)
- Meng-Yen Li
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Pooja Flora
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Hong Pu
- The Markey Cancer Center, Department of Toxicology and Cancer Biology, Department of Pediatrics, University of Kentucky College of Medicine, Lexington, KY 40506, USA
| | - Carmit Bar
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA
| | - Jose Silva
- Department of Pathology, Icahn School of Medicine at Mount Sinai, 1425 Madison Avenue, New York, NY 10029, USA
| | - Idan Cohen
- The Shraga Segal Department of Microbiology, Immunology and Genetics, Faculty of Health Science, Ben-Gurion University of the Negev, Beer Sheva 84105, Israel
| | - Phillip M Galbo
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Hequn Liu
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Xufen Yu
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jian Jin
- Mount Sinai Center for Therapeutics Discovery, Departments of Pharmacological Sciences and Oncological Sciences, Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Haruhiko Koseki
- Laboratory for Developmental Genetics, RIKEN Center for Integrative Medical Sciences (RIKEN-IMS) 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama 230-0045, Japan; AMED-CREST, 1-7-22 Suehiro-cho Tsurumi-ku, Yokohama 230-0045, Japan
| | - John A D'Orazio
- The Markey Cancer Center, Department of Toxicology and Cancer Biology, Department of Pediatrics, University of Kentucky College of Medicine, Lexington, KY 40506, USA
| | - Deyou Zheng
- Department of Genetics, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA; Departments of Genetics, Neurology, and Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Avenue, Bronx, NY 10461, USA
| | - Elena Ezhkova
- Black Family Stem Cell Institute, Department of Cell, Developmental, and Regenerative Biology, Icahn School of Medicine at Mount Sinai, 1 Gustave L. Levy Place, New York, NY 10029, USA.
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10
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Upadhyay PR, Ho T, Abdel-Malek ZA. Participation of keratinocyte- and fibroblast-derived factors in melanocyte homeostasis, the response to UV, and pigmentary disorders. Pigment Cell Melanoma Res 2021; 34:762-776. [PMID: 33973367 DOI: 10.1111/pcmr.12985] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 04/19/2021] [Accepted: 05/04/2021] [Indexed: 12/12/2022]
Abstract
Human epidermal melanocytes play a central role in sensing the environment and protecting the skin from the drastic effects of solar ultraviolet radiation and other environmental toxins or inflammatory agents. Melanocytes survive in the epidermis for decades, which subjects them to chronic environmental insults. Melanocytes have a poor self-renewal capacity; therefore, it is critical to ensure their survival with genomic stability. The function and survival of melanocytes is regulated by an elaborate network of paracrine factors synthesized mainly by epidermal keratinocytes and dermal fibroblasts. A symbiotic relationship exists between epidermal melanocytes and keratinocytes on the one hand, and between melanocytes and dermal fibroblasts on the other hand. Melanocytes protect epidermal keratinocytes and dermal fibroblasts from the damaging effects of solar radiation, and the latter cells synthesize biochemical mediators that maintain the homeostasis, and regulate the stress response of melanocytes. Disruption of the paracrine network results in pigmentary disorders, due to abnormal regulation of melanin synthesis, and compromise of melanocyte survival or genomic stability. This review provides an update of the current knowledge of keratinocyte- and fibroblast-derived paracrine factors and their contribution to melanocyte physiology, and how their abnormal production is involved in the pathogenesis of common pigmentary disorders.
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Affiliation(s)
- Parth R Upadhyay
- Department of Dermatology, University of Cincinnati College of Medicine, Cincinnati, OH, USA.,Division of Pharmaceutical Sciences, College of Pharmacy, University of Cincinnati, Cincinnati, OH, USA
| | - Tina Ho
- Department of Dermatology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
| | - Zalfa A Abdel-Malek
- Department of Dermatology, University of Cincinnati College of Medicine, Cincinnati, OH, USA
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11
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Lee EJ, Kim J, Jeong MK, Lee YM, Chung YJ, Kim EM. Whitening effect of novel peptide mixture by regulating melanosome biogenesis, transfer and degradation. THE KOREAN JOURNAL OF PHYSIOLOGY & PHARMACOLOGY : OFFICIAL JOURNAL OF THE KOREAN PHYSIOLOGICAL SOCIETY AND THE KOREAN SOCIETY OF PHARMACOLOGY 2021; 25:15-26. [PMID: 33361534 PMCID: PMC7756534 DOI: 10.4196/kjpp.2021.25.1.15] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/02/2020] [Revised: 10/23/2020] [Accepted: 10/23/2020] [Indexed: 12/22/2022]
Abstract
Peptides are short chain of amino acids linked by peptide bonds. They are widely used as effective and biocompatible active ingredients in cosmetic industry. In this study, we developed novel peptide mixture and identified its anti-pigmentation effect on melanocytes and keratinocytes. Our results revealed that peptide mixture inhibited melanosome biogenesis through the regulation of microphthalmia-associated transcription factor, a key factor of melanogenesis in melanocytes. And we observed that peptide mixture inhibited melanosome uptake through the reduction of protease-activated receptor 2, a phagocytosis-related receptor in keratinocytes. Furthermore, peptide mixture activated autophagy system resulting in degradation of transferred melanosomes in keratinocytes. The anti-pigmentation effect of multi-targeting peptide mixture was assessed in a human skin equivalent model (MelanoDerm). Melanin contents in epidermal layer were significantly decreased by topical treatment of peptide mixture, suggesting that it can be applied as a novel cosmetics material having a whitening function.
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Affiliation(s)
| | - Jandi Kim
- Caregen R&D Center, Anyang 14119, Korea
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12
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Tian X, Cui Z, Liu S, Zhou J, Cui R. Melanosome transport and regulation in development and disease. Pharmacol Ther 2020; 219:107707. [PMID: 33075361 DOI: 10.1016/j.pharmthera.2020.107707] [Citation(s) in RCA: 27] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2020] [Revised: 10/10/2020] [Accepted: 10/13/2020] [Indexed: 02/06/2023]
Abstract
Melanosomes are specialized membrane-bound organelles that synthesize and organize melanin, ultimately providing color to the skin, hair, and eyes. Disorders in melanogenesis and melanosome transport are linked to pigmentary diseases, such as Hermansky-Pudlak syndrome, Chediak-Higashi syndrome, and Griscelli syndrome. Clinical cases of these pigmentary diseases shed light on the molecular mechanisms that control melanosome-related pathways. However, only an improved understanding of melanogenesis and melanosome transport will further the development of diagnostic and therapeutic approaches. Herein, we review the current literature surrounding melanosomes with particular emphasis on melanosome membrane transport and cytoskeleton-mediated melanosome transport. We also provide perspectives on melanosome regulatory mechanisms which include hormonal action, inflammation, autophagy, and organelle interactions.
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Affiliation(s)
- Xiaoyu Tian
- Institute of Biomedical Sciences, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan 250014, China
| | - Ziyong Cui
- Harvard College, Cambridge, MA 02138, United States of America
| | - Song Liu
- Institute of Biomedical Sciences, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan 250014, China
| | - Jun Zhou
- Institute of Biomedical Sciences, Shandong Provincial Key Laboratory of Animal Resistance Biology, Collaborative Innovation Center of Cell Biology in Universities of Shandong, College of Life Sciences, Shandong Normal University, Jinan 250014, China; State Key Laboratory of Medicinal Chemical Biology, College of Life Sciences, Nankai University, Tianjin 300071, China.
| | - Rutao Cui
- Skin Disease Research Institute, The 2nd Hospital, Zhejiang University, Hangzhou 310058, China.
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13
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Moon HR, Jung JM, Kim SY, Song Y, Chang SE. TGF-β3 suppresses melanogenesis in human melanocytes cocultured with UV-irradiated neighboring cells and human skin. J Dermatol Sci 2020; 99:100-108. [PMID: 32620316 DOI: 10.1016/j.jdermsci.2020.06.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Revised: 06/20/2020] [Accepted: 06/22/2020] [Indexed: 01/07/2023]
Abstract
BACKGROUND Ultraviolet radiation (UVR) is the most well-known cause of skin pigmentation accompanied with photoaging. Transforming growth factor (TGF)-β1 was previously shown to have anti-melanogenic property; however, it can induce scarring in skin. OBJECTIVE We investigated the effect of TGF-β3 on melanogenesis in human melanocytes cocultured with UV-irradiated skin constituent cells, and UV-irradiated human skin. METHODS UVB irradiation or treatment with stem cell factor (SCF) and endothelin-1 (ET-1) was applied to human melanocytes cocultured with keratinocytes and/or fibroblasts and ex vivo human skin. Mechanistic pathways were further explored after treatment with TGF-β3. RESULTS While UVB irradiation or SCF/ET-1 enhanced melanogenesis, TGF-β3 effectively inhibited melanin accumulation and tyrosinase activity via downregulation of the extracellular signal-regulated kinase (ERK)/microphthalmia-associated transcription factor (MITF) pathway. TGF-β3 increased the expression of differentiation markers of keratinocytes. CONCLUSION TGF-β3 effectively suppressed UVR-stimulated melanogenesis indicating that topical TGF-β3 may be a suitable candidate for the treatment of UV-associated hyperpigmentation disorders.
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Affiliation(s)
- Hye-Rim Moon
- Beautiful skin clinic, 16-26, Sanbon-ro 323beon-gil, Gunpo-si, Gyeonggi-do, Republic of Korea
| | - Joon Min Jung
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Su Yeon Kim
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea
| | - Youngsup Song
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
| | - Sung Eun Chang
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Republic of Korea.
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14
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Jung JM, Noh TK, Jo SY, Kim SY, Song Y, Kim YH, Chang SE. Guanine Deaminase in Human Epidermal Keratinocytes Contributes to Skin Pigmentation. Molecules 2020; 25:molecules25112637. [PMID: 32517074 PMCID: PMC7321356 DOI: 10.3390/molecules25112637] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/25/2020] [Accepted: 06/02/2020] [Indexed: 01/06/2023] Open
Abstract
Epidermal keratinocytes are considered as the most important neighboring cells that modify melanogenesis. Our previous study used microarray to show that guanine deaminase (GDA) gene expression is highly increased in melasma lesions. Hence, we investigated the role of GDA in skin pigmentation. We examined GDA expression in post-inflammatory hyperpigmentation (PIH) lesions, diagnosed as Riehl’s melanosis. We further investigated the possible role of keratinocyte-derived GDA in melanogenesis by quantitative PCR, immunofluorescence staining, small interfering RNA-based GDA knockdown, and adenovirus-mediated GDA overexpression. We found higher GDA positivity in the hyperpigmentary lesional epidermis than in the perilesional epidermis. Both UVB irradiation and stem cell factor (SCF) plus endothelin-1 (ET-1) were used, which are well-known melanogenic stimuli upregulating GDA expression in both keratinocyte culture alone and keratinocyte and melanocyte coculture. GDA knockdown downregulated melanin content, while GDA overexpression promoted melanogenesis in the coculture. When melanocytes were treated with UVB-exposed keratinocyte-conditioned media, the melanin content was increased. Also, GDA knockdown lowered SCF and ET-1 expression levels in keratinocytes. GDA in epidermal keratinocytes may promote melanogenesis by upregulating SCF and ET-1, suggesting its role in skin hyperpigmentary disorders.
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Affiliation(s)
- Joon Min Jung
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea; (J.M.J.); (T.K.N.); (S.Y.J.); (S.Y.K.)
| | - Tai Kyung Noh
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea; (J.M.J.); (T.K.N.); (S.Y.J.); (S.Y.K.)
| | - Soo Youn Jo
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea; (J.M.J.); (T.K.N.); (S.Y.J.); (S.Y.K.)
| | - Su Yeon Kim
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea; (J.M.J.); (T.K.N.); (S.Y.J.); (S.Y.K.)
| | - Youngsup Song
- Department of Biomedical Sciences, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea;
| | - Young-Hoon Kim
- Department of Pharmacology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea
- Correspondence: (Y.-H.K.); (S.E.C.); Tel.: +82-2-3010-4298 (Y.-H.K.); +82-2-3010-3460 (S.E.C.); Fax: +82-2-3010-2941 (Y.-H.K.); +82-2-486-7831 (S.E.C.)
| | - Sung Eun Chang
- Department of Dermatology, Asan Medical Center, University of Ulsan College of Medicine, 88 Olympic-ro 43-gil, Songpa-gu, Seoul 05505, Korea; (J.M.J.); (T.K.N.); (S.Y.J.); (S.Y.K.)
- Correspondence: (Y.-H.K.); (S.E.C.); Tel.: +82-2-3010-4298 (Y.-H.K.); +82-2-3010-3460 (S.E.C.); Fax: +82-2-3010-2941 (Y.-H.K.); +82-2-486-7831 (S.E.C.)
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15
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Melanogenic Properties and Expression Profiles of Melanogenic Paracrine Molecules in Riehl's Melanosis. Int J Mol Sci 2020; 21:ijms21051695. [PMID: 32121626 PMCID: PMC7084821 DOI: 10.3390/ijms21051695] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Revised: 01/15/2020] [Accepted: 01/16/2020] [Indexed: 02/06/2023] Open
Abstract
Riehl's melanosis is a hyperpigmentary disorder that occurs predominantly on the face and neck. To date, the pathogenesis of Riehl's melanosis with regards to the melanogenic properties and paracrine melanogenic molecules has not well been studied. This study was aimed to provide a novel perspective on the pathogenesis of Riehl's melanosis by identifying the relevant paracrine melanogenic molecules in Riehl's melanosis. Skin biopsies were performed on lesional and normal-appearing perilesional skin of 12 patients with Riehl's melanosis and 12 age- and sex-matched healthy controls. Histopathological and immunohistochemical staining for paracrine melanogenic molecules was analyzed. The major histopathological findings of Riehl's melanosis were basal hyperpigmentation, melanocyte proliferation, interface change, dermal pigmentary incontinence, vascular proliferation, and dermal inflammation. Dermal expression intensities of stem cell factor (SCF) and c-kit were increased in the lesional skin of Riehl's melanosis. In addition, increased expression of epidermal and dermal ET-1 was also observed in the lesional skin of Riehl's melanosis. Increased tissue expressions of SCF, c-kit, and ET-1 in Riehl's melanosis support the role of these paracrine melanogenic molecules in the pathogenesis of Riehl's melanosis. The findings from this study might present useful information on the pathogenetic mechanism of Riehl's melanosis.
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16
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Kim JC, Kim SM, Kang B, Kang HY. Citrus fruit-induced hyperpigmentation: An in vivo example of melanocyte behavior following acute UV overexposure. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2020; 36:248-250. [PMID: 32027417 DOI: 10.1111/phpp.12539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Revised: 01/02/2020] [Accepted: 02/03/2020] [Indexed: 11/27/2022]
Affiliation(s)
- Jin Cheol Kim
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
| | - So Min Kim
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
| | - Bogyeong Kang
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea.,Department of Biomedical Science, The Graduate School, Ajou University, Suwon, Korea
| | - Hee Young Kang
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
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17
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Takano K, Hachiya A, Murase D, Tanabe H, Kasamatsu S, Takahashi Y, Moriwaki S, Hase T. Quantitative changes in the secretion of exosomes from keratinocytes homeostatically regulate skin pigmentation in a paracrine manner. J Dermatol 2020; 47:265-276. [PMID: 31916286 DOI: 10.1111/1346-8138.15202] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2019] [Accepted: 11/27/2019] [Indexed: 12/24/2022]
Abstract
The content and distribution of melanin in the epidermis determines the wide variety of skin colors associated with ethnic/racial diversity. Although it was previously reported that qualitative changes in keratinocyte-derived exosomes regulate melanocyte pigmentation in vitro, their practical involvement, especially in skin color development in vivo, has remained unclear. To address this unexplained scientific concern, the correlation of epidermal exosomes isolated from human skin tissues with melanosomal protein expression levels was demonstrated in this study for the first time. After confirming the quantitative effect of human keratinocyte-derived exosomes on human melanocyte activation, even in the absence of ultraviolet B (UV-B) exposure, the impact of exosomes secreted from UV-B-irradiated keratinocytes on melanogenesis was consistently detected, which suggests their constitutive role in regulating cutaneous pigmentation. Additionally, both a specific exosome secretion inducer and a suppressor were consistently found to significantly control melanin synthesis in a co-culture system composed of keratinocytes and melanocytes as well as in an ex vivo skin culture system. These results suggest that quantitative changes, in addition to already known qualitative changes, in exosomes secreted from human epidermal keratinocytes homeostatically regulate melanogenic activity in a paracrine manner, which leads to skin color determination.
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Affiliation(s)
- Kei Takano
- Biological Science Laboratories, Kao Corporation, Odawara, Kanagawa, Japan
| | - Akira Hachiya
- Planning and Implementation, Kao Corporation, Haga, Tochigi, Japan
| | - Daiki Murase
- Biological Science Laboratories, Kao Corporation, Odawara, Kanagawa, Japan
| | - Hiroki Tanabe
- Skin Care Laboratories, Kao Corporation, Sumida, Tokyo, Japan
| | - Shinya Kasamatsu
- Biological Science Laboratories, Kao Corporation, Odawara, Kanagawa, Japan
| | - Yoshito Takahashi
- Biological Science Laboratories, Kao Corporation, Odawara, Kanagawa, Japan
| | - Shigeru Moriwaki
- Biological Science Laboratories, Kao Corporation, Haga, Tochigi, Japan
| | - Tadashi Hase
- Core Technology Sector, Kao Corporation, Sumida, Tokyo, Japan
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18
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Yun CY, Roh E, Kim SH, Han J, Lee J, Jung DE, Kim GH, Jung SH, Cho WJ, Han SB, Kim Y. Stem Cell Factor-Inducible MITF-M Expression in Therapeutics for Acquired Skin Hyperpigmentation. Am J Cancer Res 2020; 10:340-352. [PMID: 31903124 PMCID: PMC6929618 DOI: 10.7150/thno.39066] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 09/04/2019] [Indexed: 01/17/2023] Open
Abstract
Rationale: Microphthalmia-associated transcription factor M (MITF-M) plays important roles in the pigment production, differentiation and survival of melanocytes. Stem cell factor (SCF) and its receptor KIT stimulate MITF-M activity via phosphorylation at the post-translation level. However, the phosphorylation shortens half-life of MITF-M protein over the course of minutes. Here, we investigated novel hypotheses of (i) whether SCF/KIT can regulate MITF-M activity through gene expression as the alternative process, and (ii) whether chemical inhibition of KIT activity can mitigate the acquired pigmentation in skin by targeting the expression of MITF-M. Methods: We employed melanocyte cultures in vitro and pigmented skin samples in vivo, and applied immunoblotting, RT-PCR, siRNA-based gene knockdown and confocal microscopy. Results: The protein and mRNA levels of MITF-M in epidermal melanocytes and the promoter activity of MITF-M in B16-F0 melanoma cells demonstrated that SCF/KIT could trigger the expression of MITF-M de novo, following the phosphorylation-dependent proteolysis of pre-existing MITF-M protein. SCF/KIT regulated the transcription abilities of cAMP-responsive element-binding protein (CREB), CREB-regulated co-activator 1 (CRTC1) and SRY-related HMG-box 10 (SOX10) but not β-catenin at the MITF-M promoter. Meanwhile, chemical inhibition of KIT activity abolished SCF-induced melanin production in epidermal melanocyte cultures, as well as protected the skin from UV-B-induced hyperpigmentation in HRM2 mice or brownish guinea pigs, in which it down-regulated the expression of MITF-M de novo at the promoter level. Conclusion: We propose the targeting of SCF/KIT-inducible MITF-M expression as a strategy in the therapeutics for acquired pigmentary disorders.
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19
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Bellei B, Picardo M. Premature cell senescence in human skin: Dual face in chronic acquired pigmentary disorders. Ageing Res Rev 2020; 57:100981. [PMID: 31733332 DOI: 10.1016/j.arr.2019.100981] [Citation(s) in RCA: 45] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/02/2019] [Revised: 10/16/2019] [Accepted: 11/07/2019] [Indexed: 01/10/2023]
Abstract
Although senescence was originally described as an in vitro acquired cellular characteristic, it was recently recognized that senescence is physiologically and pathologically involved in aging and age-related diseases in vivo. The definition of cellular senescence has expanded to include the growth arrest caused by various cellular stresses, including DNA damage, inadequate mitochondria function, activated oncogene or tumor suppressor genes and oxidative stress. While senescence in normal aging involves various tissues over time and contributes to a decline in tissue function even with healthy aging, disease-induced premature senescence may be restricted to one or a few organs triggering a prolonged and more intense rate of accumulation of senescent cells than in normal aging. Organ-specific high senescence rate could lead to chronic diseases, especially in post-mitotic rich tissue. Recently, two opposite acquired pathological conditions related to skin pigmentation were described to be associated with premature senescence: vitiligo and melasma. In both cases, it was demonstrated that pathological dysfunctions are not restricted to melanocytes, the cell type responsible for melanin production and transport to surrounding keratinocytes. Similar to physiological melanogenesis, dermal and epidermal cells contribute directly and indirectly to deregulate skin pigmentation as a result of complex intercellular communication. Thus, despite senescence usually being reported as a uniform phenotype sharing the expression of characteristic markers, skin senescence involving mainly the dermal compartment and its paracrine function could be associated with the disappearance of melanocytes in vitiligo lesions and with the exacerbated activity of melanocytes in the hyperpigmentation spots of melasma. This suggests that the difference may arise in melanocyte intrinsic differences and/or in highly defined microenvironment peculiarities poorly explored at the current state of the art. A similar dualistic phenotype has been attributed to intratumoral stromal cells as cancer-associated fibroblasts presenting a senescent-like phenotype which influence the behavior of neoplastic cells in either a tumor-promoting or tumor-inhibiting manner. Here, we present a framework dissecting senescent-related molecular alterations shared by vitiligo and melasma patients and we also discuss disease-specific differences representing new challenges for treatment.
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Affiliation(s)
- Barbara Bellei
- Laboratory of Cutaneous Physiopathology and Integrated Center for Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy.
| | - Mauro Picardo
- Laboratory of Cutaneous Physiopathology and Integrated Center for Metabolomics Research, San Gallicano Dermatological Institute, IRCCS, Rome, Italy
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20
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Ethanolic Extract of Hippocampus abdominalis Exerts Anti-Melanogenic Effects in B16F10 Melanoma Cells and Zebrafish Larvae by Activating the ERK Signaling Pathway. COSMETICS 2019. [DOI: 10.3390/cosmetics7010001] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The big belly seahorse (Hippocampus abdominalis), a well-known ingredient of traditional medicine, possesses anti-inflammatory, anti-aging, anti-fatigue, and anti-thrombotic properties, and also increases male fertility. This study demonstrates that the ethanolic extract of dried H. abdominalis (EEHA) has anti-melanogenic effects in B16F10 melanoma cells and zebrafish larvae. EEHA significantly reduced the α-melanocyte-stimulating hormone (α-MSH)-induced melanogenesis in B16F10 melanoma cells without causing cytotoxicity. At a concentration of 200 µg/mL, EEHA had significant anti-melanogenic activity in zebrafish larvae, accompanied by a severe reduction in the heart rate (118 ± 17 heartbeats/min) compared to that of the untreated group (185 ± 8 heartbeats/min), indicating that EEHA induces cardiotoxicity at high concentrations. Below 100 µg/mL, EEHA significantly reduced melanogenesis in zebrafish larvae in the presence or absence of α-MSH, while the heart rate remained unaltered. Additionally, EEHA downregulated the release of cyclic adenosine monophosphate (cAMP) and the phosphorylation of cAMP response element-binding protein (CREB) in B16F10 melanoma cells, which inhibited microphthalmia-associated transcription factor (MITF), leading to the inhibition of tyrosinase activity. EEHA also increased the phosphorylation of extracellular-signal regulated kinase (ERK). The ERK inhibitor PD98059 interfered with the anti-melanogenic activity of EEHA in B16F10 melanoma cells and zebrafish larvae, indicating that the ERK signaling pathway might regulate the anti-melanogenic properties of EEHA. Altogether, we conclude that EEHA represses the cAMP–CREB–MITF axis, which consequently inhibits tyrosinase-mediated melanogenesis. We propose that at low concentrations, EEHA can serve as a promising anti-melanogenic agent that could be used to prepare whitening cosmetics and for treating melanogenic disorders.
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21
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Xu YC, Hou JQ, Zhu WJ, Li P. Sjogren-Larsson syndrome associated hypermelanosis. J Cosmet Dermatol 2019; 19:789-798. [PMID: 31697031 DOI: 10.1111/jocd.13209] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Revised: 10/12/2019] [Accepted: 10/16/2019] [Indexed: 01/03/2023]
Abstract
BACKGROUND/OBJECTIVES Sjogren - Larsson syndrome (SLS) is a rare autosomal recessive disease of the mutation ALDH3A2 that identifies a part of fatty acids for fatty aldehyde dehydrogenase: NAD-oxidoreductase enzyme complex. This study aimed to access variant ALDH3A2 gene coded for FALDH and products regulating pathogenic melanogenesis owing to increased oxidative stress and reactive oxygen species resulting in DNA harm in SLS. By turning them into fatty acids, FALDH avoids the accumulation of toxic fatty aldehydes. The mutation results in the accumulation of aldehyde-modified lipids or fatty alcohols that may interfere with skin and brain function. METHODS In Nov 2018, we performed a literature search in PubMed for clinical studies, clinical trials, case reports, controlled trials, randomized controlled trials, and systemic reviews. The search terms we used were "SJOGREN-LARSSON SYNDROME" AND "HYPERMELANNOSIS" OR "FALDH" (from 1985). The search resulted in 1,289 articles, out of these 95 articles met our inclusion exclusion criteria. Our inclusion criteria included relevant original articles relevant, critical systemic reviews, and crucial referenced articles, ex-clusion criteria included duplicates and articles not published in English language. RESULTS Toxicity of long-chain aldehydes to FALDH-deficient cells owing to accumulation under the profound epidermis layer improves oxidative stress in the cell resulting in keratinocyte hyperproliferation. CONCLUSION While it continues to be determined whether accumulated fatty alcohol and fatty aldehydes obtained from ether glycerolipids and sphingolipids improve the susceptibility of melanocytes and their element accountable for skin hyperpigmentation to biological colour.
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Affiliation(s)
- Yang-Chun Xu
- Department of Dermatology, The Second Hospital of Jilin University, Changchun, China
| | - Ji-Qiu Hou
- Department of Pharmacy, The Second Hospital of Jilin University, Changchun, China
| | - Wen-Jing Zhu
- Department of Dermatology, The Second Hospital of Jilin University, Changchun, China
| | - Ping Li
- Department of Developmental Pediatrics, The Second Hospital of Jilin University, Changchun, China
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22
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Melanocyte Activation Mechanisms and Rational Therapeutic Treatments of Solar Lentigos. Int J Mol Sci 2019; 20:ijms20153666. [PMID: 31357457 PMCID: PMC6695993 DOI: 10.3390/ijms20153666] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2019] [Revised: 07/11/2019] [Accepted: 07/24/2019] [Indexed: 12/20/2022] Open
Abstract
To characterize the pathobiology of solar lentigos (SLs), analyses by semiquantitative RT-PCR, Western blotting, and immunohistochemistry revealed the upregulated expression of endothelin (EDN)-1/endothelin B receptors (EDNBRs), stem cell factor (SCF)/c-KIT, and tumor necrosis factor (TNF)α in the lesional epidermis, which contrasted with the downregulated expression of interleukin (IL) 1α. These findings strongly support the hypothesis that previous repeated UVB exposure triggers keratinocytes to continuously produce TNFα. TNFα then stimulates the secretion of EDNs and the production of SCF in an autocrine fashion, leading to the continuous melanogenic activation of neighboring melanocytes, which causes SLs. A clinical study of 36 patients with SLs for six months treated with an M. Chamomilla extract with a potent ability to abrogate the EDN1-induced increase in DNA synthesis and melanization of human melanocytes in culture revealed a significant improvement in pigment scores and color differences expressed as L values. Another clinical study using a tyrosinase inhibitor L-ascorbate-2-phosphate 3 Na (ASP) demonstrated that L values of test lotion (6% APS)-treated skin significantly increased in SLs and in non-lesional skin with a significantly higher ΔL value in SLs when compared with non-lesional skin. The sum of these findings strongly suggests that combined topical treatment with EDN signaling blockers and tyrosinase inhibitors is a desirable therapeutic choice for SLs.
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Singh KN, Patil S, Barkate H. Protective effects of astaxanthin on skin: Recent scientific evidence, possible mechanisms, and potential indications. J Cosmet Dermatol 2019; 19:22-27. [PMID: 31141292 DOI: 10.1111/jocd.13019] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2019] [Revised: 03/27/2019] [Accepted: 05/12/2019] [Indexed: 12/28/2022]
Abstract
Astaxanthin is a naturally occurring ketocarotenoid which has been found to have numerous biological functions, with its strong antioxidant property being the prominent feature. The compound has attracted a great amount of interest with respect to its potential utilization in the betterment of human health. In the recent past, astaxanthin has been extensively studied with respect to its possible effect on skin health, with positive results. Astaxanthin has also shown to have anti-inflammatory, immune-modulating, and DNA repair properties, which have further encouraged its usage to maintain skin health and tackle skin damage. In this review article, we highlight the pharmacokinetic profile of the antioxidant in brief and describe the findings of various recent published research articles which studied the effect of astaxanthin in improvement of skin health. We also mention the possible mechanisms which form the basis of the positive dermatological effects of astaxanthin and the potential indications of the antioxidant molecule in cosmetology and dermatology.
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24
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Filoni A, Mariano M, Cameli N. Melasma: How hormones can modulate skin pigmentation. J Cosmet Dermatol 2019; 18:458-463. [PMID: 30779300 DOI: 10.1111/jocd.12877] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2018] [Revised: 12/28/2018] [Accepted: 01/07/2019] [Indexed: 01/19/2023]
Abstract
We described-along with a genetic predisposition and exposure to sunlight, as the main factors for melasma development-pregnancy, hormonal therapies, and oral contraceptive pills. Whilst hormonal alteration or therapies are frequently reported in literature in association with melasma, studies analyzing the laboratoristic correlation are limited. We review data published on hormones variations both in women and males with melasma and report some peculiar clinical cases that further demonstrate how the relationship between hormone secretion and melasma development is difficult to be defined.
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Affiliation(s)
- Angela Filoni
- San Gallicano Dermatological Institute (IRCCS), Rome, Italy
| | - Maria Mariano
- San Gallicano Dermatological Institute (IRCCS), Rome, Italy
| | - Norma Cameli
- San Gallicano Dermatological Institute (IRCCS), Rome, Italy
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25
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Seoane M, Buhs S, Iglesias P, Strauss J, Puller AC, Müller J, Gerull H, Feldhaus S, Alawi M, Brandner JM, Eggert D, Du J, Thomale J, Wild PJ, Zimmermann M, Sternsdorf T, Schumacher U, Nollau P, Fisher DE, Horstmann MA. Lineage-specific control of TFIIH by MITF determines transcriptional homeostasis and DNA repair. Oncogene 2019; 38:3616-3635. [PMID: 30651597 PMCID: PMC6756118 DOI: 10.1038/s41388-018-0661-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2018] [Accepted: 12/05/2018] [Indexed: 11/15/2022]
Abstract
The melanocytic lineage, which is prominently exposed to ultraviolet radiation (UVR) and radiation-independent oxidative damage, requires specific DNA-damage response mechanisms to maintain genomic and transcriptional homeostasis. The coordinate lineage-specific regulation of intricately intertwined DNA repair and transcription is incompletely understood. Here we demonstrate that the Microphthalmia-associated transcription factor (MITF) directly controls general transcription and UVR-induced nucleotide excision repair by transactivation of GTF2H1 as a core element of TFIIH. Thus, MITF ensures the rapid resumption of transcription after completion of strand repair and maintains transcriptional output, which is indispensable for survival of the melanocytic lineage including melanoma in vitro and in vivo. Moreover, MITF controls c-MYC implicated in general transcription by transactivation of far upstream binding protein 2 (FUBP2/KSHRP), which induces c-MYC pulse regulation through TFIIH, and experimental depletion of MITF results in consecutive loss of CDK7 in the TFIIH-CAK subcomplex. Targeted for proteasomal degradation, CDK7 is dependent on transactivation by MITF or c-MYC to maintain a steady state. The dependence of TFIIH-CAK on sequence-specific MITF and c-MYC constitutes a previously unrecognized mechanism feeding into super-enhancer-driven or other oncogenic transcriptional circuitries, which supports the concept of a transcription-directed therapeutic intervention in melanoma.
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Affiliation(s)
- Marcos Seoane
- Research Institute Children's Cancer Center Hamburg, Hamburg, 20246, Germany.,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Sophia Buhs
- Research Institute Children's Cancer Center Hamburg, Hamburg, 20246, Germany.,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Pablo Iglesias
- Research Institute Children's Cancer Center Hamburg, Hamburg, 20246, Germany.,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Julia Strauss
- Research Institute Children's Cancer Center Hamburg, Hamburg, 20246, Germany.,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Ann-Christin Puller
- Research Institute Children's Cancer Center Hamburg, Hamburg, 20246, Germany.,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Jürgen Müller
- Research Institute Children's Cancer Center Hamburg, Hamburg, 20246, Germany.,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Helwe Gerull
- Research Institute Children's Cancer Center Hamburg, Hamburg, 20246, Germany.,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Susanne Feldhaus
- Institute of Anatomy and Experimental Morphology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Malik Alawi
- Bioinformatics Service Facility, University Medical Center Hamburg, Hamburg, 20246, Germany.,Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, 20251, Germany
| | - Johanna M Brandner
- Department of Dermatology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Dennis Eggert
- Heinrich Pette Institute, Leibniz Institute for Experimental Virology, Hamburg, 20251, Germany.,Max-Planck-Institute for the Structure and Dynamics of Matter, Hamburg, 22761, Germany
| | - Jinyan Du
- Department of Pediatric Oncology, Dana Farber Cancer Institute, Harvard Medical School, Boston, MA, 02115, USA.,Merrimack Pharmaceuticals, Cambridge, MA, 02139, USA
| | - Jürgen Thomale
- Institute of Cell Biology, University Duisburg-Essen, Essen, 45122, Germany
| | - Peter J Wild
- Institute of Surgical Pathology, University Hospital Zürich, Zürich, 8091, Switzerland
| | - Martin Zimmermann
- Department of Pediatric Hematology and Oncology, Medical School Hannover, Hannover, 30625, Germany
| | - Thomas Sternsdorf
- Research Institute Children's Cancer Center Hamburg, Hamburg, 20246, Germany.,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Udo Schumacher
- Institute of Anatomy and Experimental Morphology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - Peter Nollau
- Research Institute Children's Cancer Center Hamburg, Hamburg, 20246, Germany.,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, 20246, Germany
| | - David E Fisher
- Department of Dermatology, Cutaneous Biology Research Center, Massachusetts General Hospital, Harvard Medical School, Boston, MA, 02115, USA
| | - Martin A Horstmann
- Research Institute Children's Cancer Center Hamburg, Hamburg, 20246, Germany. .,Department of Pediatric Hematology and Oncology, University Medical Center Hamburg, Hamburg, 20246, Germany.
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26
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Li J, Chen W, Wu S, Ma T, Jiang H, Zhang Q. Differential expression of MC1R gene in Liaoning Cashmere goats with different coat colors. Anim Biotechnol 2019; 30:273-278. [DOI: 10.1080/10495398.2018.1485681] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- JianPing Li
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin, China
| | - Wei Chen
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - SuFang Wu
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - Tao Ma
- College of Veterinary Medicine, Jilin University, Changchun, China
| | - HuaiZhi Jiang
- College of Animal Science and Technology, Jilin Agricultural University, Changchun, China
| | - QiaoLing Zhang
- College of Veterinary Medicine, Jilin University, Changchun, China
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27
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Abstract
Melanocytes which represent around 5% of epidermal cells are located in the basal layer. To culture melanocytes we used trypsin digestion instead of dispase to obtain a cell suspension containing only basal keratinocytes and melanocytes. Melanocytes are cells which need a great attention. Indeed they dedifferentiate easily in culture as soon as they are in pure culture. Factors secreted by contaminating keratinocytes allow melanocytes to stay dendritic but by regulating their number avoid their growth. In order to age, phototype and other individual dependent factors regulate the behavior of melanocytes in vitro. Thus, microscopic examination of melanocytes has to be performed each day to adapt conditions of culture to each primary cell culture. This is the secret to have a nice melanocyte culture.
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Affiliation(s)
- Muriel Cario
- INSERM 1035, University of Bordeaux, Bordeaux Cedex, France.
| | - Alain Taieb
- Department of Dermatology and Pediatric Dermatology, Bordeaux University Hospitals, INSERM U 1035, University of Bordeaux, Bordeaux, France
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28
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Abstract
KIT is a receptor tyrosine kinase that after binding to its ligand stem cell factor activates signaling cascades linked to biological processes such as proliferation, differentiation, migration and cell survival. Based on studies performed on SCF and/or KIT mutant animals that presented anemia, sterility, and/or pigmentation disorders, KIT signaling was mainly considered to be involved in the regulation of hematopoiesis, gametogenesis, and melanogenesis. More recently, novel animal models and ameliorated cellular and molecular techniques have led to the discovery of a widen repertoire of tissue compartments and functions that are being modulated by KIT. This is the case for the lung, heart, nervous system, gastrointestinal tract, pancreas, kidney, liver, and bone. For this reason, the tyrosine kinase inhibitors that were originally developed for the treatment of hemato-oncological diseases are being currently investigated for the treatment of non-oncological disorders such as asthma, rheumatoid arthritis, and alzheimer's disease, among others. The beneficial effects of some of these tyrosine kinase inhibitors have been proven to depend on KIT inhibition. This review will focus on KIT expression and regulation in healthy and pathologic conditions other than cancer. Moreover, advances in the development of anti-KIT therapies, including tyrosine kinase inhibitors, and their application will be discussed.
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29
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Hirobe T, Enami H. Excellent color-matched repigmentation of human vitiligo can be obtained by mini-punch grafting using a machine in combination with ultraviolet therapy. DERMATOL SIN 2018. [DOI: 10.1016/j.dsi.2018.01.004] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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30
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Imokawa G. The Xanthophyll Carotenoid Astaxanthin has Distinct Biological Effects to Prevent the Photoaging of the Skin Even by its Postirradiation Treatment. Photochem Photobiol 2018; 95:490-500. [DOI: 10.1111/php.13039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2018] [Accepted: 10/02/2018] [Indexed: 11/29/2022]
Affiliation(s)
- Genji Imokawa
- Center for Bioscience Research & Education Utsunomiya University Utsunomiya Japan
- Research Institute for Biological Functions Chubu University Kasugai Japan
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31
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Hirobe T, Enami H. Histochemical study of the distribution of epidermal melanoblasts and melanocytes in Asian human skin. Skin Res Technol 2018; 25:299-304. [DOI: 10.1111/srt.12649] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 09/29/2018] [Indexed: 12/21/2022]
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32
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Exploring major signaling cascades in melanomagenesis: a rationale route for targetted skin cancer therapy. Biosci Rep 2018; 38:BSR20180511. [PMID: 30166456 PMCID: PMC6167501 DOI: 10.1042/bsr20180511] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2018] [Revised: 08/14/2018] [Accepted: 08/24/2018] [Indexed: 02/06/2023] Open
Abstract
Although most melanoma cases may be treated by surgical intervention upon early diagnosis, a significant portion of patients can still be refractory, presenting low survival rates within 5 years after the discovery of the illness. As a hallmark, melanomas are highly prone to evolve into metastatic sites. Moreover, melanoma tumors are highly resistant to most available drug therapies and their incidence have increased over the years, therefore leading to public health concerns about the development of novel therapies. Therefore, researches are getting deeper in unveiling the mechanisms by which melanoma initiation can be triggered and sustained. In this context, important progress has been achieved regarding the roles and the impact of cellular signaling pathways in melanoma. This knowledge has provided tools for the development of therapies based on the intervention of signal(s) promoted by these cascades. In this review, we summarize the importance of major signaling pathways (mitogen-activated protein kinase (MAPK), phosphoinositide 3-kinase (PI3K)-Akt, Wnt, nuclear factor κ-light-chain-enhancer of activated B cell (NF-κB), Janus kinase (JAK)-signal transducer and activator of transcription (STAT), transforming growth factor β (TGF-β) and Notch) in skin homeostasis and melanoma progression. Available and developing melanoma therapies interfering with these signaling cascades are further discussed.
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33
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Swope VB, Abdel-Malek ZA. MC1R: Front and Center in the Bright Side of Dark Eumelanin and DNA Repair. Int J Mol Sci 2018; 19:E2667. [PMID: 30205559 PMCID: PMC6163888 DOI: 10.3390/ijms19092667] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2018] [Revised: 08/31/2018] [Accepted: 09/03/2018] [Indexed: 12/17/2022] Open
Abstract
Melanin, the pigment produced by specialized cells, melanocytes, is responsible for skin and hair color. Skin pigmentation is an important protective mechanism against the DNA damaging and mutagenic effects of solar ultraviolet radiation (UV). It is acknowledged that exposure to UV is the main etiological environmental factor for all forms of skin cancer, including melanoma. DNA repair capacity is another major factor that determines the risk for skin cancer. Human melanocytes synthesize eumelanin, the dark brown form of melanin, as well as pheomelanin, which is reddish-yellow in color. The relative rates of eumelanin and pheomelanin synthesis by melanocytes determine skin color and the sensitivity of skin to the drastic effects of solar UV. Understanding the complex regulation of melanocyte function and how it responds to solar UV has a huge impact on developing novel photoprotective strategies to prevent skin cancer, particularly melanoma, the most fatal form, which originates from melanocytes. This review provides an overview of the known differences in the photoprotective effects of eumelanin versus pheomelanin, how these two forms of melanin are regulated genetically and biochemically, and their impact on the DNA damaging effects of UV exposure. Additionally, this review briefly discusses the role of paracrine factors, focusing on α-melanocortin (α-melanocyte stimulating hormone; α-MSH), in regulating melanogenesis and the response of melanocytes to UV, and describes a chemoprevention strategy based on targeting the melanocortin 1 receptor (MC1R) by analogs of its physiological agonist α-MSH.
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Affiliation(s)
- Viki B Swope
- Department of Dermatology, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH 45267, USA.
| | - Zalfa A Abdel-Malek
- Department of Dermatology, University of Cincinnati, 231 Albert Sabin Way, Cincinnati, OH 45267, USA.
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34
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Hirobe T, Enami H. Activation of melanoblasts and melanocytes after treatment with monochromatic excimer light and narrowband-ultraviolet B of skin of vitiligo patients. Int J Dermatol 2018; 58:210-217. [DOI: 10.1111/ijd.14216] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2018] [Revised: 06/14/2018] [Accepted: 08/08/2018] [Indexed: 12/19/2022]
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35
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Carney BC, Chen JH, Luker JN, Alkhalil A, Jo DY, Travis TE, Moffatt LT, Simbulan-Rosenthal CM, Rosenthal DS, Shupp JW. Pigmentation Diathesis of Hypertrophic Scar: An Examination of Known Signaling Pathways to Elucidate the Molecular Pathophysiology of Injury-Related Dyschromia. J Burn Care Res 2018; 40:58-71. [DOI: 10.1093/jbcr/iry045] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Bonnie C Carney
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, District of Columbia
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia
| | - Jason H Chen
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia
- The Burn Center, Department of Surgery, MedStar Washington Hospital Center, District of Columbia
| | - Jenna N Luker
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia
| | - Abdulnaser Alkhalil
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia
| | - Daniel Y Jo
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia
| | - Taryn E Travis
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia
- The Burn Center, Department of Surgery, MedStar Washington Hospital Center, District of Columbia
| | - Lauren T Moffatt
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, District of Columbia
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia
| | - Cynthia M Simbulan-Rosenthal
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, District of Columbia
| | - Dean S Rosenthal
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, District of Columbia
| | - Jeffrey W Shupp
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, District of Columbia
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, District of Columbia
- The Burn Center, Department of Surgery, MedStar Washington Hospital Center, District of Columbia
- Department of Surgery, Georgetown University School of Medicine, Washington, DC
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36
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Kasraian Z, Trompezinski S, Cario-André M, Morice-Picard F, Ged C, Jullie ML, Taieb A, Rezvani HR. Pigmentation abnormalities in nucleotide excision repair disorders: Evidence and hypotheses. Pigment Cell Melanoma Res 2018; 32:25-40. [PMID: 29938913 DOI: 10.1111/pcmr.12720] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2018] [Revised: 05/11/2018] [Accepted: 06/11/2018] [Indexed: 12/12/2022]
Abstract
Skin pigmentation abnormalities are manifested in several disorders associated with deficient DNA repair mechanisms such as nucleotide excision repair (NER) and double-strand break (DSB) diseases, a topic that has not received much attention up to now. Hereditary disorders associated with defective DNA repair are valuable models for understanding mechanisms that lead to hypo- and hyperpigmentation. Owing to the UV-associated nature of abnormal pigmentary manifestations, the outcome of the activated DNA damage response (DDR) network could be the effector signal for alterations in pigmentation, ultimately manifesting as pigmentary abnormalities in repair-deficient disorders. In this review, the role of the DDR network in the manifestation of pigmentary abnormalities in NER and DSB disorders is discussed with a special emphasis on NER disorders.
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Affiliation(s)
- Zeinab Kasraian
- NAOS, Aix en Provence, France.,Univ. Bordeaux, Inserm, BMGIC, UMR 1035, Bordeaux, France
| | | | - Muriel Cario-André
- Univ. Bordeaux, Inserm, BMGIC, UMR 1035, Bordeaux, France.,Centre de Référence pour les Maladies Rares de la Peau, CHU de Bordeaux, Bordeaux, France
| | - Fanny Morice-Picard
- Centre de Référence pour les Maladies Rares de la Peau, CHU de Bordeaux, Bordeaux, France.,Service de Dermatologie Adulte et Pédiatrique, CHU de Bordeaux, Bordeaux, France
| | - Cécile Ged
- Univ. Bordeaux, Inserm, BMGIC, UMR 1035, Bordeaux, France.,Centre de Référence pour les Maladies Rares de la Peau, CHU de Bordeaux, Bordeaux, France
| | | | - Alain Taieb
- Univ. Bordeaux, Inserm, BMGIC, UMR 1035, Bordeaux, France.,Centre de Référence pour les Maladies Rares de la Peau, CHU de Bordeaux, Bordeaux, France.,Service de Dermatologie Adulte et Pédiatrique, CHU de Bordeaux, Bordeaux, France
| | - Hamid Reza Rezvani
- Univ. Bordeaux, Inserm, BMGIC, UMR 1035, Bordeaux, France.,Centre de Référence pour les Maladies Rares de la Peau, CHU de Bordeaux, Bordeaux, France
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37
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Lee DH, Ahn SS, Kim JB, Lim Y, Lee YH, Shin SY. Downregulation of α-Melanocyte-Stimulating Hormone-Induced Activation of the Pax3-MITF-Tyrosinase Axis by Sorghum Ethanolic Extract in B16F10 Melanoma Cells. Int J Mol Sci 2018; 19:ijms19061640. [PMID: 29865165 PMCID: PMC6032395 DOI: 10.3390/ijms19061640] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2018] [Revised: 05/25/2018] [Accepted: 05/30/2018] [Indexed: 01/15/2023] Open
Abstract
Ultraviolet irradiation-induced hyperpigmentation of the skin is associated with excessive melanin production in melanocytes. Tyrosinase (TYR) is a key enzyme catalyzing the rate-limiting step in melanogenesis. TYR expression is controlled by microphthalmia-associated transcription factor (MITF) expression. Sorghum is a cereal crop widely used in a variety of foods worldwide. Sorghum contains many bioactive compounds and is beneficial to human health. However, the effects of sorghum in anti-melanogenesis have not been well characterized. In this study, the biological activity of sorghum ethanolic extract (SEE) on α-melanocyte-stimulating hormone (α-MSH)-induced TYR expression was evaluated in B16F10 melanoma cells. SEE attenuated α-MSH-induced TYR gene promoter activity through the downregulation of the transcription factor MITF. We found that paired box gene 3 (Pax3) contributes to the maximal induction of MITF gene promoter activity. Further analysis demonstrated that SEE inhibited α-MSH-induced Pax3 expression. The collective results indicate that SEE attenuates α-MSH-induced TYR expression through the suppression of Pax3-mediated MITF gene promoter activity. Targeting the Pax3-MITF axis pathway could be considered a potential strategy to increase the efficacy of anti-melanogenesis.
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Affiliation(s)
- Da Hyun Lee
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Korea.
| | - Sung Shin Ahn
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Korea.
| | - Jung-Bong Kim
- Functional Food and Nutrition Division, National Institute of Agricultural Sciences, Rural Development Administration, Jeonju 55365, Korea.
| | - Yoongho Lim
- Division of Bioscience and Biotechnology, BMIC, Konkuk University, Seoul 05029, Korea.
| | - Young Han Lee
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Korea.
- Cancer and Metabolism Institute, Konkuk University, Seoul 05029, Korea.
| | - Soon Young Shin
- Department of Biological Sciences, Sanghuh College of Life Sciences, Konkuk University, Seoul 05029, Korea.
- Cancer and Metabolism Institute, Konkuk University, Seoul 05029, Korea.
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38
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Hopf NB, Spring P, Hirt-Burri N, Jimenez S, Sutter B, Vernez D, Berthet A. Polycyclic aromatic hydrocarbons (PAHs) skin permeation rates change with simultaneous exposures to solar ultraviolet radiation (UV-S). Toxicol Lett 2018; 287:122-130. [DOI: 10.1016/j.toxlet.2018.01.024] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2017] [Revised: 01/26/2018] [Accepted: 01/30/2018] [Indexed: 12/28/2022]
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39
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Koike S, Yamasaki K, Yamauchi T, Inoue M, Shimada-Ohmori R, Tsuchiyama K, Aiba S. Toll-like receptors 2 and 3 enhance melanogenesis and melanosome transport in human melanocytes. Pigment Cell Melanoma Res 2018; 31:570-584. [PMID: 29603875 DOI: 10.1111/pcmr.12703] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2017] [Accepted: 03/18/2018] [Indexed: 01/18/2023]
Abstract
Because little is known about how the innate immune response influences skin pigmentation, we examined whether Toll-like receptor (TLR) agonists participate in melanogenesis and melanosome transportation. We observed that TLR2/2 agonist HKLM and TLR3 agonist Poly(I:C) increased the amount of extracellular melanin from primary human epidermal melanocytes. HKLM, but not Poly(I:C), increased the melanogenic genes such as tyrosinase and dopachrome tautomerase. Poly(I:C) increased the expression of Rab27A, a molecule that facilitates melanosome transport to perimembranous actin filament. UVB irradiation induced Rab27A and melanosome transportation in a similar manner of Poly(I:C). SiRNA for TLR3 or Rab27A suppressed the perimembranous accumulation of Gp100-positive vesicles in melanocytes and decreased melanin transfer to neighboring keratinocytes induced by both Poly(I:C) and UVB. These results suggest that the microenvironment in the epidermis and innate immune stimuli, such as microbiome and ultraviolet represented here by TLR2 and TLR3 agonists, could affect the melanogenesis in human melanocytes.
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Affiliation(s)
- Saaya Koike
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kenshi Yamasaki
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Takeshi Yamauchi
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Mai Inoue
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Ryoko Shimada-Ohmori
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kenichiro Tsuchiyama
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Setsuya Aiba
- Department of Dermatology, Tohoku University Graduate School of Medicine, Sendai, Japan
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40
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Kim M, Shibata T, Kwon S, Park TJ, Kang HY. Ultraviolet-irradiated endothelial cells secrete stem cell factor and induce epidermal pigmentation. Sci Rep 2018. [PMID: 29523807 PMCID: PMC5844989 DOI: 10.1038/s41598-018-22608-y] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Ultraviolet (UV)-associated hyperpigmented skins are characterized with increased vasculature underlying pigmentation, suggestive of the possible biological role of endothelial cells in the regulation of skin pigmentation during UV irradiation. In this study, we showed that UV-irradiated endothelial cells significantly increased the pigmentation of melanocytes through epithelial-mesenchymal crosstalk. The stimulatory effect of endothelial cells was further demonstrated using ex vivo human skin. RNA sequence analysis and enzyme-linked immunosorbent assay showed that endothelial cells secrete more stem cell factor (SCF) upon UV irradiation than non-irradiated cells. The increased pigmentation elicited by endothelial cells was abrogated following inhibition of SCF/c-KIT signaling. Together these results suggest that endothelial cells are activated upon UV exposure to release melanogenic factors such as SCF, which contributes to the development of skin hyperpigmentation during chronic sun exposure.
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Affiliation(s)
- Misun Kim
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
| | | | - Soohyun Kwon
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea
| | - Tae Jun Park
- Department of Biochemistry and Molecular Biology, Ajou University School of Medicine, Suwon, Korea. .,Chronic Inflammatory Disease Research Center, Ajou University School of Medicine, Suwon, Korea. .,Department of Biomedical Science, The Graduate School, Ajou University, Suwon, Korea.
| | - Hee Young Kang
- Department of Dermatology, Ajou University School of Medicine, Suwon, Korea. .,Department of Biomedical Science, The Graduate School, Ajou University, Suwon, Korea.
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41
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Terazawa S, Imokawa G. Signaling Cascades Activated by UVB in Human Melanocytes Lead to the Increased Expression of Melanocyte Receptors, Endothelin B Receptor and c-KIT. Photochem Photobiol 2018; 94:421-431. [PMID: 28977677 DOI: 10.1111/php.12848] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 09/18/2017] [Indexed: 01/06/2023]
Abstract
A single exposure of normal human melanocytes (NHMs) to ultraviolet B (UVB) radiation induces a distinct increase in the expression of c-KIT and endothelin B receptor (EDNRB) and upregulates the expression of microphthalmia-associated transcription factor (MITF). In this review, we clarify the signaling mechanisms by which UVB stimulates the expression of MITF in NHMs, thus leading to upregulation of those two important melanogenic receptors. The increased expression of MITF in UVB-exposed NHMs is accompanied by a markedly stimulated and prolonged phosphorylation of p38/CREB. The UVB-stimulated expression of c-KIT and EDNRB could be completely abolished by a p38 inhibitor concomitant with a reduced phosphorylation of CREB and a downregulation of MITF expression. The UVB exposure of NHMs stimulates the phosphorylation of p38 and c-jun N-terminal kinase, but not ERK, followed by the increased phosphorylation of MSK1 and subsequently CREB. Postirradiation treatment with the MSK1 inhibitor H89 significantly downregulates the increased mRNA and protein expression of MITF, EDNRB and c-KIT in UVB-exposed NHMs. Our findings indicate for the first time that the increased expression of MITF that leads to the upregulation of melanocyte-specific proteins in UVB-exposed NHMs is mediated via activation of the p38/MSK1/CREB axis but not the ERK/RSK/CREB axis.
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Affiliation(s)
- Shuko Terazawa
- Research Institute for Biological Functions, Chubu University, Aichi, Japan
| | - Genji Imokawa
- Research Institute for Biological Functions, Chubu University, Aichi, Japan.,Center for Bioscience Research & Education, Utsunomiya University, Tochigi, Japan
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42
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Yuan XH, Jin ZH. Paracrine regulation of melanogenesis. Br J Dermatol 2018; 178:632-639. [PMID: 28494100 DOI: 10.1111/bjd.15651] [Citation(s) in RCA: 68] [Impact Index Per Article: 11.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/05/2017] [Indexed: 01/10/2023]
Abstract
Melanocytes are generally characterized by the basic ability of melanin synthesis and transfer to adjacent keratinocytes. This constitutes an individual skin phenotype and provides epidermal protection from various stimuli, such as ultraviolet irradiation, through a complex process called melanogenesis, which can be regulated by autocrine or paracrine factors. Recent evidence has revealed the paracrine effects of keratinocytes on melanogenesis by secreting cytokines, including α-melanocyte stimulating hormone and endothelin-1. In addition to keratinocytes, there are other types of cells in the skin, such as fibroblasts and immune cells, which are also actively involved in the regulation of melanocyte behaviour through the production of paracrine factors. In addition, extracellular matrix proteins, which are secreted mainly by skin-resident cells, not only play direct roles in regulating melanocyte morphology and functions but also provide structural support between the epidermis and dermis to control the distribution of various secreted cytokines from keratinocytes and/or fibroblasts, which are potentially involved in the regulation of melanogenesis. Moreover, understanding the origin of melanocytes (neural crest cells) and the presence of nerve endings in the epidermis can reveal the intimate contact between melanocytes and cutaneous specific nervous system proteins. Melanocytes are associated with all these networks with corresponding receptors expressed on the cell surface. In this review, we provide an overview of recent advances in determining the intimate relationships between melanocytes and their surrounding elements, which provide insights into the complex nature of the regulation of melanogenesis.
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Affiliation(s)
- X H Yuan
- Department of Dermatology, Yanbian University Hospital, 1327 Juzi Street, Yanji City, Jilin Province, 133000, China
| | - Z H Jin
- Department of Dermatology, Yanbian University Hospital, 1327 Juzi Street, Yanji City, Jilin Province, 133000, China
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Pillaiyar T, Manickam M, Jung SH. Recent development of signaling pathways inhibitors of melanogenesis. Cell Signal 2017; 40:99-115. [PMID: 28911859 DOI: 10.1016/j.cellsig.2017.09.004] [Citation(s) in RCA: 127] [Impact Index Per Article: 18.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2017] [Revised: 09/10/2017] [Accepted: 09/10/2017] [Indexed: 02/08/2023]
Abstract
Human skin, eye and hair color rely on the production of melanin, depending on its quantity, quality, and distribution, Melanin plays a monumental role in protecting the skin against the harmful effect of ultraviolet radiation and oxidative stress from various environmental pollutants. However, an excessive production of melanin causes serious dermatological problems such as freckles, solar lentigo (age spots), melasma, as well as cancer. Hence, the regulation of melanin production is important for controlling the hyper-pigmentation. Melanogenesis, a biosynthetic pathway to produce melanin pigment in melanocyte, involves a series of intricate enzymatic and chemical catalyzed reactions. Several extrinsic factors include ultraviolet radiation and chemical drugs, and intrinsic factors include molecules secreted by surrounding keratinocytes or melanocytes, and fibroblasts, all of which regulate melanogenesis. This article reviews recent advances in the development of melanogenesis inhibitors that directly/indirectly target melanogenesis-related signaling pathways. Efforts have been made to provide a description of the mechanism of action of inhibitors on various melanogenesis signaling pathways.
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Affiliation(s)
- Thanigaimalai Pillaiyar
- PharmaCenter Bonn, Pharmaceutical Institute, Pharmaceutical Chemistry I, University of Bonn, An der Immenburg 4, D-53121 Bonn, Germany.
| | - Manoj Manickam
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National, University, Daejeon 34134, Republic of Korea
| | - Sang-Hun Jung
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National, University, Daejeon 34134, Republic of Korea
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CK1α ablation in keratinocytes induces p53-dependent, sunburn-protective skin hyperpigmentation. Proc Natl Acad Sci U S A 2017; 114:E8035-E8044. [PMID: 28878021 DOI: 10.1073/pnas.1702763114] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
Abstract
Casein kinase 1α (CK1α), a component of the β-catenin destruction complex, is a critical regulator of Wnt signaling; its ablation induces both Wnt and p53 activation. To characterize the role of CK1α (encoded by Csnk1a1) in skin physiology, we crossed mice harboring floxed Csnk1a1 with mice expressing K14-Cre-ERT2 to generate mice in which tamoxifen induces the deletion of Csnk1a1 exclusively in keratinocytes [single-knockout (SKO) mice]. As expected, CK1α loss was accompanied by β-catenin and p53 stabilization, with the preferential induction of p53 target genes, but phenotypically most striking was hyperpigmentation of the skin, importantly without tumorigenesis, for at least 9 mo after Csnk1a1 ablation. The number of epidermal melanocytes and eumelanin levels were dramatically increased in SKO mice. To clarify the putative role of p53 in epidermal hyperpigmentation, we established K14-Cre-ERT2 CK1α/p53 double-knockout (DKO) mice and found that coablation failed to induce epidermal hyperpigmentation, demonstrating that it was p53-dependent. Transcriptome analysis of the epidermis revealed p53-dependent up-regulation of Kit ligand (KitL). SKO mice treated with ACK2 (a Kit-neutralizing antibody) or imatinib (a Kit inhibitor) abrogated the CK1α ablation-induced hyperpigmentation, demonstrating that it requires the KitL/Kit pathway. Pro-opiomelanocortin (POMC), a precursor of α-melanocyte-stimulating hormone (α-MSH), was not activated in the CK1α ablation-induced hyperpigmentation, which is in contrast to the mechanism of p53-dependent UV tanning. Nevertheless, acute sunburn effects were successfully prevented in the hyperpigmented skin of SKO mice. CK1α inhibition induces skin-protective eumelanin but no carcinogenic pheomelanin and may therefore constitute an effective strategy for safely increasing eumelanin via UV-independent pathways, protecting against acute sunburn.
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Tominaga K, Hongo N, Fujishita M, Takahashi Y, Adachi Y. Protective effects of astaxanthin on skin deterioration. J Clin Biochem Nutr 2017; 61:33-39. [PMID: 28751807 PMCID: PMC5525019 DOI: 10.3164/jcbn.17-35] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2017] [Accepted: 05/01/2017] [Indexed: 11/22/2022] Open
Abstract
Astaxanthin is a carotenoid with potent antioxidant and anti-inflammatory activity. To evaluate the anti-inflammatory effect of astaxanthin on skin deterioration, we confirmed its role in epidermal-dermal interactions in vitro. Astaxanthin treatment suppressed ultraviolet B (UVB)-induced inflammatory cytokine secretion in keratinocytes, and matrix metalloproteinase-1 secretion by fibroblasts cultured in UVB-irradiated keratinocyte medium. To verify these findings, we conducted a 16-week clinical study with 65 healthy female participants. Participants were orally administered either a 6 mg or 12 mg dose of astaxanthin or a placebo. Wrinkle parameters and skin moisture content significantly worsened in the placebo group after 16 weeks. However, significant changes did not occur in the astaxanthin groups. Interleukin-1α levels in the stratum corneum significantly increased in the placebo and low-dose groups but not in the high-dose group between weeks 0 and 16. This study was performed in Japan from August to December, when changing environmental factors, such as UV and dryness, exacerbate skin deterioration. In conclusion, our study suggests that long-term prophylactic astaxanthin supplementation may inhibit age-related skin deterioration and maintain skin conditions associated with environmentally induced damage via its anti-inflammatory effect. (UMIN Clinical Trials Registry ID: UMIN000018550)
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Affiliation(s)
- Kumi Tominaga
- AstaReal Co., Ltd., 55 Yoko-hoonji, Kamiichi-machi, Nakaniikawa-gun, Toyama 930-0397, Japan
| | - Nobuko Hongo
- AstaReal Co., Ltd., 55 Yoko-hoonji, Kamiichi-machi, Nakaniikawa-gun, Toyama 930-0397, Japan
| | - Mayuko Fujishita
- AstaReal Co., Ltd., 55 Yoko-hoonji, Kamiichi-machi, Nakaniikawa-gun, Toyama 930-0397, Japan
| | - Yu Takahashi
- AstaReal Co., Ltd., 55 Yoko-hoonji, Kamiichi-machi, Nakaniikawa-gun, Toyama 930-0397, Japan
| | - Yuki Adachi
- AstaReal Co., Ltd., 55 Yoko-hoonji, Kamiichi-machi, Nakaniikawa-gun, Toyama 930-0397, Japan
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Sorlin A, Maruani A, Aubriot-Lorton MH, Kuentz P, Duffourd Y, Teysseire S, Carmignac V, St-Onge J, Chevarin M, Jouan T, Thauvin-Robinet C, Thevenon J, Faivre L, Rivière JB, Vabres P. Mosaicism for a KITLG Mutation in Linear and Whorled Nevoid Hypermelanosis. J Invest Dermatol 2017; 137:1575-1578. [PMID: 28257793 DOI: 10.1016/j.jid.2017.01.035] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2016] [Revised: 01/16/2017] [Accepted: 01/26/2017] [Indexed: 01/24/2023]
Affiliation(s)
- Arthur Sorlin
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France
| | - Annabel Maruani
- Service de Dermatologie, CHRU de Tours, Tours, France; University François Rabelais, CIC-Inserm1415, Tours, France
| | | | - Paul Kuentz
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France; Fédération Hospitalo-Universitaire Médecine Translationnelle et Anomalies du Développement, CHU Dijon Bourgogne, France; Génétique Biologique Histologie, CHRU de Besançon, Besançon, France
| | - Yannis Duffourd
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France; Fédération Hospitalo-Universitaire Médecine Translationnelle et Anomalies du Développement, CHU Dijon Bourgogne, France
| | - Sandra Teysseire
- Service de Pathologie, Plateau Technique de Biologie, CHU Dijon Bourgogne, France; Service de Dermatologie, CHU Dijon Bourgogne, Dijon, France
| | - Virginie Carmignac
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France
| | - Judith St-Onge
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France; Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada
| | - Martin Chevarin
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France
| | - Thibaud Jouan
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France
| | - Christel Thauvin-Robinet
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France; Service de Pathologie, Plateau Technique de Biologie, CHU Dijon Bourgogne, France; Centre de référence Anomalies du Développement et Syndromes Malformatifs, CHU Dijon Bourgogne, France; Service de Pédiatrie 1 et de Génétique Médicale, CHU Dijon Bourgogne, Dijon, France
| | - Julien Thevenon
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France; Service de Pathologie, Plateau Technique de Biologie, CHU Dijon Bourgogne, France; Centre de référence Anomalies du Développement et Syndromes Malformatifs, CHU Dijon Bourgogne, France; Service de Pédiatrie 1 et de Génétique Médicale, CHU Dijon Bourgogne, Dijon, France
| | - Laurence Faivre
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France; Service de Pathologie, Plateau Technique de Biologie, CHU Dijon Bourgogne, France; Centre de référence Anomalies du Développement et Syndromes Malformatifs, CHU Dijon Bourgogne, France; Service de Pédiatrie 1 et de Génétique Médicale, CHU Dijon Bourgogne, Dijon, France
| | - Jean-Baptiste Rivière
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France; Service de Pathologie, Plateau Technique de Biologie, CHU Dijon Bourgogne, France; Child Health and Human Development Program, Research Institute of the McGill University Health Centre, Montreal, Quebec, Canada; Department of Human Genetics, Faculty of Medicine, McGill University, Montreal, Quebec, Canada
| | - Pierre Vabres
- Université Bourgogne Franche-Comté, EA 4271 Génétique des Anomalies du Développement, Dijon, France; Service de Pathologie, Plateau Technique de Biologie, CHU Dijon Bourgogne, France; Service de Dermatologie, CHU Dijon Bourgogne, Dijon, France; Centre de référence Anomalies du Développement et Syndromes Malformatifs, CHU Dijon Bourgogne, France.
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Hirobe T, Shibata T, Sato K. Human fibroblasts treated with hydrogen peroxide stimulate human melanoblast proliferation and melanocyte differentiation, but inhibit melanocyte proliferation in serum-free co-culture system. J Dermatol Sci 2016; 84:282-295. [DOI: 10.1016/j.jdermsci.2016.09.001] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 08/16/2016] [Accepted: 09/05/2016] [Indexed: 02/05/2023]
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48
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Downregulation of melanogenesis: drug discovery and therapeutic options. Drug Discov Today 2016; 22:282-298. [PMID: 27693716 DOI: 10.1016/j.drudis.2016.09.016] [Citation(s) in RCA: 97] [Impact Index Per Article: 12.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2016] [Revised: 08/11/2016] [Accepted: 09/20/2016] [Indexed: 01/03/2023]
Abstract
Melanin, primarily responsible in humans for hair, eye and skin pigmentation, is produced by melanocytes through a process called melanogenesis. However, the abnormal accumulation of melanin causes dermatological problems such as café-au-lait macules ephelides (freckles), solar lentigo (age spots) and melasma, as well as cancer and vitiligo. Hence the regulation of melanogenesis is very important for treating hyperpigmentary disorders. Numerous antimelanogenic agents that target tyrosinase activity and/or stability, melanosome maturation, transfer and trafficking, or melanogenesis-related signaling pathways have been developed. This article reviews recent advances in research and development of human tyrosinase and melanogenesis-related signaling pathway inhibitors. Attempts have been made to provide a complete description of the mechanism of action of inhibitors on various melanogenesis signaling pathways.
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49
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Kim JY, Kim DS, Sohn H, Lee EJ, Oh SH. PAR-2 is involved in melanogenesis by mediating stem cell factor production in keratinocytes. Exp Dermatol 2016; 25:487-9. [DOI: 10.1111/exd.12982] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/09/2016] [Indexed: 11/30/2022]
Affiliation(s)
- Ji Young Kim
- Department of Dermatology and Cutaneous Biology Research Institute; Severance Hospital; Yonsei University College of Medicine; Seoul Korea
| | - Dae Suk Kim
- Department of Dermatology and Cutaneous Biology Research Institute; Severance Hospital; Yonsei University College of Medicine; Seoul Korea
| | - Hyojung Sohn
- Department of Dermatology and Cutaneous Biology Research Institute; Severance Hospital; Yonsei University College of Medicine; Seoul Korea
| | - Eun Jung Lee
- Department of Dermatology and Cutaneous Biology Research Institute; Severance Hospital; Yonsei University College of Medicine; Seoul Korea
| | - Sang Ho Oh
- Department of Dermatology and Cutaneous Biology Research Institute; Severance Hospital; Yonsei University College of Medicine; Seoul Korea
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50
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Ghani-Nejad H, Hallaji Z, Damavandi MR, Lajevardi V, Aghazadeh N, Moeini H, Beigi S. Dermoscopic Changes of Melanocytic Nevi after Psoralen-Ultraviolet A and Narrow-Band Ultraviolet B Phototherapy. Indian J Dermatol 2016; 61:118. [PMID: 26955122 PMCID: PMC4763632 DOI: 10.4103/0019-5154.174079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background: Phototherapy may alter the morphologic features of melanocytic nevi. Dermoscopy is a non-invasive method for evaluation of skin lesions, specifically melanocytic nevi. Aims and Objectives: This study was designed to evaluate the effects of narrowband ultraviolet B (NB-UVB) and psoralen-ultraviolet A (PUVA) therapy on the dermoscopic features of nevi. Methods: A total of 74 melanocytic nevi were randomly selected from 20 patients. Out of those, 54 nevi received NB-UVB, while 20 received PUVA. 50% of the nevi in each group were exposed to radiation, while the remaining nevi were covered with an opaque tape. All nevi were demoscopically evaluated before and after 30 or 60 sessions of phototherapy. Results: Overall demoscopic changes were observed in 34/37 (91.8%) of the uncovered nevi compared to 16/37 (43.2%) of the covered nevi (P value 0.0001). The most common changes were new dot/globule formation (62.1%), darkening (32.4%), nevus enlargement (27%), and patchy pigmentation (18.8%). Compared to NB-UVB, dermoscopic changes were more frequent in both covered and uncovered nevi of the PUVA group. (P values 0.041 and 0.0172, respectively). New dot/globule formation was observed more frequently in the covered and uncovered nevi of PUVA group. Conclusion: PUVA and NB-UVB induce dermoscopic changes in the majority of the irradiated nevi. However, PUVA is associated with higher frequency of dermoscopic changes in both covered and uncovered nevi.
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Affiliation(s)
- Hayedeh Ghani-Nejad
- Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Zahra Hallaji
- Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Maede Rayati Damavandi
- Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Vahide Lajevardi
- Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Nessa Aghazadeh
- Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Hooman Moeini
- Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Beigi
- Department of Dermatology, Razi Hospital, Tehran University of Medical Sciences, Tehran, Iran
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