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Zhang W, Luosang C, Yuan C, Guo T, Wei C, Liu J, Lu Z. Selection signatures of wool color in Gangba sheep revealed by genome-wide SNP discovery. BMC Genomics 2024; 25:606. [PMID: 38886664 PMCID: PMC11181613 DOI: 10.1186/s12864-024-10464-2] [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: 03/03/2024] [Accepted: 05/29/2024] [Indexed: 06/20/2024] Open
Abstract
BACKGROUND Gangba sheep as a famous breed of Tibetan sheep, its wool color is mainly white and black. Gangba wool is economically important as a high-quality raw material for Tibetan blankets and Tibetan serge. However, relatively few studies have been conducted on the wool color of Tibetan sheep. RESULTS To fill this research gap, this study conducted an in-depth analysis of two populations of Gangba sheep (black and white wool color) using whole genome resequencing to identify genetic variation associated with wool color. Utilizing PCA, Genetic Admixture, and N-J Tree analyses, the present study revealed a consistent genetic relationship and structure between black and white wool colored Gangba sheep populations, which is consistent with their breed history. Analysis of selection signatures using multiple methods (FST, π ratio, Tajima's D), 370 candidate genes were screened in the black wool group (GBB vs GBW); among them, MC1R, MLPH, SPIRE2, RAB17, SMARCA4, IRF4, CAV1, USP7, TP53, MYO6, MITF, MC2R, TET2, NF1, JAK1, GABRR1 genes are mainly associated with melanin synthesis, melanin delivery, and distribution. The enrichment results of the candidate genes identified 35 GO entries and 19 KEGG pathways associated with the formation of the black phenotype. 311 candidate genes were screened in the white wool group (GBW vs GBB); among them, REST, POU2F1, ADCY10, CCNB1, EP300, BRD4, GLI3, and SDHA genes were mainly associated with interfering with the differentiation of neural crest cells into melanocytes, affecting the proliferation of melanocytes, and inhibiting melanin synthesis. 31 GO entries and 22 KEGG pathways were associated with the formation of the white phenotype. CONCLUSIONS This study provides important information for understanding the genetic mechanism of wool color in Gangba, and provides genetic knowledge for improving and optimizing the wool color of Tibetan sheep. Genetic improvement and selective breeding to produce wool of specific colors can meet the demand for a diversity of wool products in the Tibetan wool textile market.
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Affiliation(s)
- Wentao Zhang
- Key Laboratory of Animal Genetics and Breeding On Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
- Sheep Breeding Engineering Technology Research Center of Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Cuicheng Luosang
- Institute of Animal Science, Tibet Academy of Agricultural and Animal Husbandry Sciences, Lhasa, 850009, China
| | - Chao Yuan
- Key Laboratory of Animal Genetics and Breeding On Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
- Sheep Breeding Engineering Technology Research Center of Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - Tingting Guo
- Key Laboratory of Animal Genetics and Breeding On Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
- Sheep Breeding Engineering Technology Research Center of Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China
| | - Caihong Wei
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences, Beijing, 100193, China
| | - Jianbin Liu
- Key Laboratory of Animal Genetics and Breeding On Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China.
- Sheep Breeding Engineering Technology Research Center of Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China.
| | - Zengkui Lu
- Key Laboratory of Animal Genetics and Breeding On Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China.
- Sheep Breeding Engineering Technology Research Center of Chinese Academy of Agricultural Sciences, Lanzhou, 730050, China.
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2
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Song G, Dai T, Chang Y, Pei H, Liu W, Guo P, Ren Y, Shen G, Feng J. A BEST classification system of large to giant congenital melanocytic nevi based on expert consensus and distribution characteristics. J Eur Acad Dermatol Venereol 2024. [PMID: 38708780 DOI: 10.1111/jdv.20075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 03/28/2024] [Indexed: 05/07/2024]
Abstract
BACKGROUND Large to giant congenital melanocytic nevi (LGCMN) significantly decrease patients' quality of life, but the inaccuracy of current classification system makes their clinical management challenging. OBJECTIVES To improve and extend the existing LGCMN 6B/7B classification systems by developing a novel LGCMN classification system based on a new phenotypic approach to clinical tool development. METHODS Three hundred and sixty-one LGCMN cases were categorized into four subtypes based on anatomic site: bonce (25.48%), extremity (17.73%), shawl (19.67%) and trunks (37.12%) LGCMN. A 'BEST' classification system of LGCMN was established and validated by a support vector machine classifier combined with the 7B system. RESULTS The most common LGCMN distributions were on bonce and trunks (bathing trunk), whereas breast/belly and body LGCMN were exceptionally rare. Sexual dimorphism characterized distribution, with females showing a wider range of lesions in the genital area. Nearly half of the patients with bathing trunk LGCMN exhibited a butterfly-like distribution. Approximately half of the LGCMN with chest involvement did not have nipple-areola complex involvement. Abdomen, back and buttock involvement was associated with the presence of satellite nevi (r = 0.558), and back and buttock involvement was associated with the presence of nodules (r = 0.364). CONCLUSIONS The effective quantification of a standardized anatomical site provides data support for the accuracy of the 6B/7B classification systems. The simplified BEST classification system can help establish a LGCMN clinical database for exploration of LGCMN aetiology, disease management and prognosis prediction.
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Affiliation(s)
- Ge Song
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China
- Department of Plastic Surgery, First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China
| | - Tao Dai
- Department of Wound Reconstructive Surgery, Tongji Hospital of Tongji University, Shanghai, China
| | - Yajie Chang
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China
| | - Huile Pei
- Department of Dermatology, Second Affiliated Hospital of Henan University of Science and Technology, Luoyang, China
| | - Wuping Liu
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China
| | - Pengfei Guo
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China
| | - Yongqiang Ren
- Department of Plastic Surgery, First Affiliated Hospital of Henan University of Science and Technology, Luoyang, China
| | - Guiping Shen
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China
| | - Jianghua Feng
- Department of Electronic Science, Fujian Provincial Key Laboratory of Plasma and Magnetic Resonance, Xiamen University, Xiamen, China
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3
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Karkoszka M, Rok J, Wrześniok D. Melanin Biopolymers in Pharmacology and Medicine-Skin Pigmentation Disorders, Implications for Drug Action, Adverse Effects and Therapy. Pharmaceuticals (Basel) 2024; 17:521. [PMID: 38675481 PMCID: PMC11054731 DOI: 10.3390/ph17040521] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2024] [Revised: 04/12/2024] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Melanins are biopolymeric pigments formed by a multi-step oxidation process of tyrosine in highly specialized cells called melanocytes. Melanin pigments are mainly found in the skin, iris, hair follicles, and inner ear. The photoprotective properties of melanin biopolymers have been linked to their perinuclear localization to protect DNA, but their ability to scavenge metal ions and antioxidant properties has also been noted. Interactions between drugs and melanins are of clinical relevance. The formation of drug-melanin complexes can affect both the efficacy of pharmacotherapy and the occurrence of adverse effects such as phototoxic reactions and discoloration. Because the amount and type of melanin synthesized in the body is subject to multifactorial regulation-determined by both internal factors such as genetic predisposition, inflammation, and hormonal balance and external factors such as contact with allergens or exposure to UV radiation-different effects on the melanogenesis process can be observed. These factors can directly influence skin pigmentation disorders, resulting in hypopigmentation or hyperpigmentation of a genetic or acquired nature. In this review, we will present information on melanocyte biology, melanogenesis, and the multifactorial influence of melanin on pharmacological parameters during pharmacotherapy. In addition, the types of skin color disorders, with special emphasis on the process of their development, symptoms, and methods of treatment, are presented in this article.
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Affiliation(s)
- Marta Karkoszka
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Jagiellońska 4, 41-200 Sosnowiec, Poland;
| | - Jakub Rok
- Department of Pharmaceutical Chemistry, Faculty of Pharmaceutical Sciences in Sosnowiec, Medical University of Silesia, Jagiellońska 4, 41-200 Sosnowiec, Poland;
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Zhang X, Zhang M, Li Y, Jiang Y. Comprehensive transcriptional analysis of early dorsal skin development in pigs. Gene 2024; 899:148141. [PMID: 38184019 DOI: 10.1016/j.gene.2024.148141] [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: 09/27/2023] [Revised: 12/11/2023] [Accepted: 01/03/2024] [Indexed: 01/08/2024]
Abstract
Porcine skin is similar to human skin in physiology, anatomy and histology and is often used as a model animal for human skin research. There are few studies on the transcriptome aspects of pig skin during the embryonic period. In this study, RNA sequencing was performed on the dorsal skin of Chenghua sows at embryonic day 56 (E56), embryonic day 76 (E76), embryonic day 105 (E105), and 3 days after birth (D3) to explore RNA changes in pig dorsal skin at four ages. A number of skin-related differential genes were identified by intercomparison between RNAs at four time points, and KEGG functional analysis showed that these differential genes were mainly enriched in metabolic and developmental, immune, and disease pathways, and the pathways enriched in GO analysis were highly overlapping. Collagen is an important part of the skin, with type I collagen making up the largest portion. In this study, collagen type I alpha 1 (COL1A1) and collagen type I alpha 2 (COL1A2) were significantly upregulated at four time points. In addition, lncRNA-miRNA-mRNA and miRNA-circRNA coexpression networks were constructed. The data obtained may help to explain age-related changes in transcriptional patterns during skin development and provide further references for understanding human skin development at the molecular level.
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Affiliation(s)
- Xinyue Zhang
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China
| | - Mei Zhang
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China
| | - Yujing Li
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China
| | - Yanzhi Jiang
- Department of Zoology, College of Life Science, Sichuan Agricultural University, Ya'an 625014, Sichuan, China.
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Zhang W, Jin M, Lu Z, Li T, Wang H, Yuan Z, Wei C. Whole Genome Resequencing Reveals Selection Signals Related to Wool Color in Sheep. Animals (Basel) 2023; 13:3265. [PMID: 37893989 PMCID: PMC10603731 DOI: 10.3390/ani13203265] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/22/2023] [Revised: 10/10/2023] [Accepted: 10/17/2023] [Indexed: 10/29/2023] Open
Abstract
Wool color is controlled by a variety of genes. Although the gene regulation of some wool colors has been studied in relative depth, there may still be unknown genetic variants and control genes for some colors or different breeds of wool that need to be identified and recognized by whole genome resequencing. Therefore, we used whole genome resequencing data to compare and analyze sheep populations of different breeds by population differentiation index and nucleotide diversity ratios (Fst and θπ ratio) as well as extended haplotype purity between populations (XP-EHH) to reveal selection signals related to wool coloration in sheep. Screening in the non-white wool color group (G1 vs. G2) yielded 365 candidate genes, among which PDE4B, GMDS, GATA1, RCOR1, MAPK4, SLC36A1, and PPP3CA were associated with the formation of non-white wool; an enrichment analysis of the candidate genes yielded 21 significant GO terms and 49 significant KEGG pathways (p < 0.05), among which 17 GO terms and 21 KEGG pathways were associated with the formation of non-white wool. Screening in the white wool color group (G2 vs. G1) yielded 214 candidate genes, including ABCD4, VSX2, ITCH, NNT, POLA1, IGF1R, HOXA10, and DAO, which were associated with the formation of white wool; an enrichment analysis of the candidate genes revealed 9 significant GO-enriched pathways and 19 significant KEGG pathways (p < 0.05), including 5 GO terms and 12 KEGG pathways associated with the formation of white wool. In addition to furthering our understanding of wool color genetics, this research is important for breeding purposes.
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Affiliation(s)
- Wentao Zhang
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (W.Z.); (M.J.); (T.L.); (H.W.)
| | - Meilin Jin
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (W.Z.); (M.J.); (T.L.); (H.W.)
| | - Zengkui Lu
- Key Laboratory of Animal Genetics and Breeding on Tibetan Plateau, Ministry of Agriculture and Rural Affairs, Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, Lanzhou 730050, China;
| | - Taotao Li
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (W.Z.); (M.J.); (T.L.); (H.W.)
| | - Huihua Wang
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (W.Z.); (M.J.); (T.L.); (H.W.)
| | - Zehu Yuan
- Joint International Research Laboratory of Agriculture and Agri-Product Safety of Ministry of Education of China, Yangzhou University, Yangzhou 225009, China;
| | - Caihong Wei
- State Key Laboratory of Animal Biotech Breeding, Institute of Animal Sciences, Chinese Academy of Agricultural Sciences (CAAS), Beijing 100193, China; (W.Z.); (M.J.); (T.L.); (H.W.)
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7
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Brombin A, Simpson DJ, Travnickova J, Brunsdon H, Zeng Z, Lu Y, Young AIJ, Chandra T, Patton EE. Tfap2b specifies an embryonic melanocyte stem cell that retains adult multifate potential. Cell Rep 2022; 38:110234. [PMID: 35021087 PMCID: PMC8764619 DOI: 10.1016/j.celrep.2021.110234] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 10/26/2021] [Accepted: 12/16/2021] [Indexed: 12/20/2022] Open
Abstract
Melanocytes, the pigment-producing cells, are replenished from multiple stem cell niches in adult tissue. Although pigmentation traits are known risk factors for melanoma, we know little about melanocyte stem cell (McSC) populations other than hair follicle McSCs and lack key lineage markers with which to identify McSCs and study their function. Here we find that Tfap2b and a select set of target genes specify an McSC population at the dorsal root ganglia in zebrafish. Functionally, Tfap2b is required for only a few late-stage embryonic melanocytes, and is essential for McSC-dependent melanocyte regeneration. Fate mapping data reveal that tfap2b+ McSCs have multifate potential, and are the cells of origin for large patches of adult melanocytes, two other pigment cell types (iridophores and xanthophores), and nerve-associated cells. Hence, Tfap2b confers McSC identity in early development, distinguishing McSCs from other neural crest and pigment cell lineages, and retains multifate potential in the adult zebrafish.
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Affiliation(s)
- Alessandro Brombin
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK; CRUK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Daniel J Simpson
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Jana Travnickova
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK; CRUK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Hannah Brunsdon
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK; CRUK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Zhiqiang Zeng
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK; CRUK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Yuting Lu
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK; CRUK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Adelaide I J Young
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK; CRUK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Tamir Chandra
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK.
| | - E Elizabeth Patton
- MRC Human Genetics Unit, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK; CRUK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK.
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8
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Xu Y, Jang JH, Gye MC. 4-Octylphenol induces developmental abnormalities and interferes the differentiation of neural crest cells in Xenopus laevis embryos. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2021; 274:116560. [PMID: 33524650 DOI: 10.1016/j.envpol.2021.116560] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 01/15/2021] [Accepted: 01/16/2021] [Indexed: 06/12/2023]
Abstract
Developmental toxicity of 4-octylphenol (OP), an estrogenic endocrine disruptor was verified using frog embryo teratogenesis assay Xenopus. LC50, EC50Malformtion and EC50Melanocyte-dysgenesis of OP were 9.9, 10.5, and 2.4 μM, respectively. In tadpoles, despite the low teratogenic index, 2 μM OP significantly inhibited head cartilage development and tail malformation. The total length of tadpole was significantly increased at 5 μM and decreased at 10 μM OP. In OP-treated tadpoles, head cartilages were frequently missed and col2a1 mRNA was decreased at 2 μM, indicating a chondrogenic defect in developing head. In the head skin of 1 μM OP-treated tadpoles, number of melanocytes and melanogenic pathway genes expression were significantly decreased. In the head-neck junction of stage 22 embryos, OP increased foxd3 and sox10 mRNA and SOX10(+) neural crest cells (NCCs) in somite mesoderm and endoderm, indicating the inhibition of chondrogenic differentiation, ectopic migration to endoderm, and undifferentiation of NCCs by OP. Together, OP-induced head dysplasia and inhibition of melanogenesis may be attributable to deregulation of neural crest cells in embryos. In tadpoles, OP at 1 μM significantly increased lipid hydroperoxide and induced spliced xbp1 mRNA, an IRE1 pathway endoplasmic reticulum stress (ERS) marker and p-eIF2α protein, a PERK pathway ERS marker. OP at 10 μM induced CHOP mRNA, pro-apoptotic genes expression, DNA fragmentation, and cleaved caspase-3, suggesting that OP differentially induced ERS and apoptosis according to the concentration in embryos. In 5-10 μM OP-treated stage 22 embryos and stage 45 tadpole heads, Ki67 was significantly increased, suggesting the apoptosis-induced proliferation of embryonic cells in the OP-treated embryos. Together, OP should be managed as a developmental toxicant altering the behavior of NCCs in vertebrates.
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Affiliation(s)
- Yang Xu
- Department of Life Science and Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Ji Hyun Jang
- Department of Life Science and Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea
| | - Myung Chan Gye
- Department of Life Science and Institute for Natural Sciences, Hanyang University, Seoul, 04763, Republic of Korea.
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García-Martínez FJ, Azorín D, Duat-Rodríguez A, Hernández-Martín Á. Angeborene kutane Neurofibrome bei Neurofibromatose Typ 1: Klinisch‐pathologische Merkmale in der frühen Kindheit. J Dtsch Dermatol Ges 2021; 19:73-81. [PMID: 33491906 DOI: 10.1111/ddg.14322_g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 05/26/2020] [Indexed: 01/21/2023]
Affiliation(s)
| | - Daniel Azorín
- Abteilung Pathologie, Hospital Infantil Universitario Niño Jesús, Madrid, Spanien
| | - Anna Duat-Rodríguez
- Abteilung Pädiatrische Neurologie, Hospital Infantil Universitario Niño Jesús, Madrid, Spanien
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10
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García-Martínez FJ, Azorín D, Duat-Rodríguez A, Hernández-Martín Á. Congenital cutaneous neurofibromas in neurofibromatosis type 1: Clinicopathological features in early infancy. J Dtsch Dermatol Ges 2021; 19:73-80. [PMID: 33448128 DOI: 10.1111/ddg.14322] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Accepted: 05/26/2020] [Indexed: 12/12/2022]
Abstract
BACKGROUND AND OBJECTIVE Clinicopathological features of cutaneous neurofibromas presenting as large irregularly shaped congenital café-au-lait macules (CALM) in Neurofibromatosis type 1 (NF1) patients have not been well characterized. We aimed to analyze the histopathological findings of large "atypical" CALM in children with NF1. PATIENTS AND METHODS In this retrospective observational study we analyzed histopathological and immunostaining features of 21 biopsy specimens from 18 large hyperpigmented macules with irregular borders with or without hypertrichosis present during the first months of life in NF1 diagnosed children. RESULTS Of the 21 biopsies, ten showed a diffuse neurofibroma pattern and four exhibited characteristics of plexiform neurofibroma (PNF). In twelve specimens we observed groups of fusiform cells arranged linearly mimicking a small caliber nerve trunk with abnormal morphology. Repeated biopsies from two of these lesions performed at different ages showed transformation to a plexiform pattern. An increased interstitial cellularity was observed in 17 samples that was more evident around eccrine glands in 16 or accompanying hair follicles and vascular structures in twelve samples. All these cells had immunoreactivity for S100-protein, CD68 and were Melan-A positive in 15 samples. CONCLUSION Clinicopathological findings of congenital cutaneous neurofibromas provide early diagnostic clues of NF1 with high relevance for monitoring of these patients.
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Affiliation(s)
| | - Daniel Azorín
- Pathology Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
| | - Anna Duat-Rodríguez
- Pediatric Neurology Department, Hospital Infantil Universitario Niño Jesús, Madrid, Spain
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11
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Daszczuk P, Mazurek P, Pieczonka TD, Olczak A, Boryń ŁM, Kobielak K. An Intrinsic Oscillation of Gene Networks Inside Hair Follicle Stem Cells: An Additional Layer That Can Modulate Hair Stem Cell Activities. Front Cell Dev Biol 2020; 8:595178. [PMID: 33363148 PMCID: PMC7758224 DOI: 10.3389/fcell.2020.595178] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2020] [Accepted: 11/16/2020] [Indexed: 12/17/2022] Open
Abstract
This article explores and summarizes recent progress in and the characterization of main players in the regulation and cyclic regeneration of hair follicles. The review discusses current views and discoveries on the molecular mechanisms that allow hair follicle stem cells (hfSCs) to synergistically integrate homeostasis during quiescence and activation. Discussion elaborates on a model that shows how different populations of skin stem cells coalesce intrinsic and extrinsic mechanisms, resulting in the maintenance of stemness and hair regenerative potential during an organism’s lifespan. Primarily, we focus on the question of how the intrinsic oscillation of gene networks in hfSCs sense and respond to the surrounding niche environment. The review also investigates the existence of a cell-autonomous mechanism and the reciprocal interactions between molecular signaling axes in hfSCs and niche components, which demonstrates its critical driving force in either the activation of whole mini-organ regeneration or quiescent homeostasis maintenance. These exciting novel discoveries in skin stem cells and the surrounding niche components propose a model of the intrinsic stem cell oscillator which is potentially instructive for translational regenerative medicine. Further studies, deciphering of the distribution of molecular signals coupled with the nature of their oscillation within the stem cells and niche environments, may impact the speed and efficiency of various approaches that could stimulate the development of self-renewal and cell-based therapies for hair follicle stem cell regeneration.
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Affiliation(s)
- Patrycja Daszczuk
- Laboratory of Stem Cells, Development and Tissue Regeneration, Centre of New Technologies (CeNT), University of Warsaw (UW), Warsaw, Poland
| | - Paula Mazurek
- Laboratory of Stem Cells, Development and Tissue Regeneration, Centre of New Technologies (CeNT), University of Warsaw (UW), Warsaw, Poland
| | - Tomasz D Pieczonka
- Laboratory of Stem Cells, Development and Tissue Regeneration, Centre of New Technologies (CeNT), University of Warsaw (UW), Warsaw, Poland
| | - Alicja Olczak
- Laboratory of Stem Cells, Development and Tissue Regeneration, Centre of New Technologies (CeNT), University of Warsaw (UW), Warsaw, Poland
| | - Łukasz M Boryń
- Laboratory of Stem Cells, Development and Tissue Regeneration, Centre of New Technologies (CeNT), University of Warsaw (UW), Warsaw, Poland
| | - Krzysztof Kobielak
- Laboratory of Stem Cells, Development and Tissue Regeneration, Centre of New Technologies (CeNT), University of Warsaw (UW), Warsaw, Poland
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12
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Insights into Differentiation of Melanocytes from Human Stem Cells and Their Relevance for Melanoma Treatment. Cancers (Basel) 2020; 12:cancers12092508. [PMID: 32899370 PMCID: PMC7564443 DOI: 10.3390/cancers12092508] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 08/20/2020] [Accepted: 09/01/2020] [Indexed: 12/27/2022] Open
Abstract
Simple Summary The reactivation of embryonic developmental programs is crucial for melanoma cells to grow and to metastasize. In order to understand this process better, we first summarize the melanocytic differentiation process both in vivo and in vitro. Secondly, we compare and highlight important similarities between neural crest cell fate during differentiation and tumor cell characteristics during melanoma mestastasis. Finally, we suggest possible therapeutic targets, which could be used to inhibit phenotype switching by developmental cues and hence also suppress the metastatic melanoma spread. Abstract Malignant melanoma represents a highly aggressive form of skin cancer. The metastatic process itself is mostly governed by the so-called epithelial mesenchymal transition (EMT), which confers cancer cells migrative, invasive and resistance abilities. Since EMT represents a conserved developmental process, it is worthwhile further examining the nature of early developmental steps fundamental for melanocyte differentiation. This can be done either in vivo by analyzing the physiologic embryo development in different species or by in vitro studies of melanocytic differentiation originating from embryonic human stem cells. Most importantly, external cues drive progenitor cell differentiation, which can be divided in stages favoring neural crest specification or melanocytic differentiation and proliferation. In this review, we describe ectopic factors which drive human pluripotent stem cell differentiation to melanocytes in 2D, as well as in organoid models. Furthermore, we compare developmental mechanisms with processes described to occur during melanoma development. Finally, we suggest differentiation factors as potential co-treatment options for metastatic melanoma patients.
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Marie KL, Sassano A, Yang HH, Michalowski AM, Michael HT, Guo T, Tsai YC, Weissman AM, Lee MP, Jenkins LM, Zaidi MR, Pérez-Guijarro E, Day CP, Ylaya K, Hewitt SM, Patel NL, Arnheiter H, Davis S, Meltzer PS, Merlino G, Mishra PJ. Melanoblast transcriptome analysis reveals pathways promoting melanoma metastasis. Nat Commun 2020; 11:333. [PMID: 31949145 PMCID: PMC6965108 DOI: 10.1038/s41467-019-14085-2] [Citation(s) in RCA: 56] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2019] [Accepted: 12/11/2019] [Indexed: 01/21/2023] Open
Abstract
Cutaneous malignant melanoma is an aggressive cancer of melanocytes with a strong propensity to metastasize. We posit that melanoma cells acquire metastatic capability by adopting an embryonic-like phenotype, and that a lineage approach would uncover metastatic melanoma biology. Using a genetically engineered mouse model to generate a rich melanoblast transcriptome dataset, we identify melanoblast-specific genes whose expression contribute to metastatic competence and derive a 43-gene signature that predicts patient survival. We identify a melanoblast gene, KDELR3, whose loss impairs experimental metastasis. In contrast, KDELR1 deficiency enhances metastasis, providing the first example of different disease etiologies within the KDELR-family of retrograde transporters. We show that KDELR3 regulates the metastasis suppressor, KAI1, and report an interaction with the E3 ubiquitin-protein ligase gp78, a regulator of KAI1 degradation. Our work demonstrates that the melanoblast transcriptome can be mined to uncover targetable pathways for melanoma therapy.
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Affiliation(s)
- Kerrie L Marie
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Antonella Sassano
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Howard H Yang
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Aleksandra M Michalowski
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Helen T Michael
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Theresa Guo
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
- Department of Otolaryngology-Head and Neck Surgery, Sidney Kimmel Comprehensive Cancer Center, Johns Hopkins Medical Institutions, Baltimore, MD, 21287, USA
| | - Yien Che Tsai
- Laboratory of Protein Dynamics and Signaling, Center for Cancer Research, National Cancer Institute, Frederick, MD, 21702, USA
| | - Allan M Weissman
- Laboratory of Protein Dynamics and Signaling, Center for Cancer Research, National Cancer Institute, Frederick, MD, 21702, USA
| | - Maxwell P Lee
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Lisa M Jenkins
- Laboratory of Cell Biology, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - M Raza Zaidi
- Fels Institute for Cancer Research and Molecular Biology, Lewis Katz School of Medicine at Temple University, Philadelphia, PA, 19140, USA
| | - Eva Pérez-Guijarro
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Chi-Ping Day
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Kris Ylaya
- Experimental Pathology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Stephen M Hewitt
- Experimental Pathology Laboratory, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Nimit L Patel
- Small Animal Imaging Program, Frederick National Laboratory for Cancer Research, Leidos Biomedical Research Inc., Frederick, MD, 21702, USA
| | - Heinz Arnheiter
- Mammalian Development Section, National Institute of Neurological Disorders and Stroke, National Institute of Health, Bethesda, MD, 20892, USA
| | - Sean Davis
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Paul S Meltzer
- Genetics Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
| | - Glenn Merlino
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA.
| | - Pravin J Mishra
- Laboratory of Cancer Biology and Genetics, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD, 20892, USA
- James Cancer Hospital and Solove Research Institute, Ohio State University Comprehensive Cancer Center, Columbus, OH, 43210, USA
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Vandamme N, Berx G. From neural crest cells to melanocytes: cellular plasticity during development and beyond. Cell Mol Life Sci 2019; 76:1919-1934. [PMID: 30830237 PMCID: PMC11105195 DOI: 10.1007/s00018-019-03049-w] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2018] [Revised: 01/25/2019] [Accepted: 02/18/2019] [Indexed: 01/07/2023]
Abstract
Here, we review melanocyte development and how the embryonic melanoblast, although specified to become a melanocyte, is prone to cellular plasticity and is not fully committed to the melanocyte lineage. Even fully differentiated and pigment-producing melanocytes do not always have a stable phenotype. The gradual lineage restriction of neural crest cells toward the melanocyte lineage is determined by both cell-intrinsic and extracellular signals in which differentiation and pathfinding ability reciprocally influence each other. These signals are leveraged by subtle differences in timing and axial positioning. The most extensively studied migration route is the dorsolateral path between the dermomyotome and the prospective epidermis, restricted to melanoblasts. In addition, the embryonic origin of the skin dermis through which neural crest derivatives migrate may also affect the segregation between melanogenic and neurogenic cells in embryos. It is widely accepted that, irrespective of the model organism studied, the immediate precursor of both melanoblast and neurogenic populations is a glial-melanogenic bipotent progenitor. Upon exposure to different conditions, melanoblasts may differentiate into other neural crest-derived lineages such as neuronal cells and vice versa. Key factors that regulate melanoblast migration and patterning will regulate melanocyte homeostasis during different stages of hair cycling in postnatal hair follicles.
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Affiliation(s)
- Niels Vandamme
- Molecular and Cellular Oncology Laboratory, Department of Biomedical Molecular Biology, Ghent University, Technologiepark-Zwijnaarde 71, 9052, Ghent, Belgium
- DAMBI, VIB Center for Inflammation Research, Ghent, Belgium
- Department of Applied Mathematics, Computer Science and Statistics, Ghent University, Ghent, Belgium
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium
| | - Geert Berx
- Molecular and Cellular Oncology Laboratory, Department of Biomedical Molecular Biology, Ghent University, Technologiepark-Zwijnaarde 71, 9052, Ghent, Belgium.
- Cancer Research Institute Ghent (CRIG), Ghent, Belgium.
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Dupin E, Calloni GW, Coelho-Aguiar JM, Le Douarin NM. The issue of the multipotency of the neural crest cells. Dev Biol 2018; 444 Suppl 1:S47-S59. [DOI: 10.1016/j.ydbio.2018.03.024] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 03/29/2018] [Accepted: 03/30/2018] [Indexed: 12/25/2022]
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16
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Zhang YM, Zimmer MA, Guardia T, Callahan SJ, Mondal C, Di Martino J, Takagi T, Fennell M, Garippa R, Campbell NR, Bravo-Cordero JJ, White RM. Distant Insulin Signaling Regulates Vertebrate Pigmentation through the Sheddase Bace2. Dev Cell 2018; 45:580-594.e7. [PMID: 29804876 PMCID: PMC5991976 DOI: 10.1016/j.devcel.2018.04.025] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2017] [Revised: 03/07/2018] [Accepted: 04/27/2018] [Indexed: 11/15/2022]
Abstract
Patterning of vertebrate melanophores is essential for mate selection and protection from UV-induced damage. Patterning can be influenced by circulating long-range factors, such as hormones, but it is unclear how their activity is controlled in recipient cells to prevent excesses in cell number and migration. The zebrafish wanderlust mutant harbors a mutation in the sheddase bace2 and exhibits hyperdendritic and hyperproliferative melanophores that localize to aberrant sites. We performed a chemical screen to identify suppressors of the wanderlust phenotype and found that inhibition of insulin/PI3Kγ/mTOR signaling rescues the defect. In normal physiology, Bace2 cleaves the insulin receptor, whereas its loss results in hyperactive insulin/PI3K/mTOR signaling. Insulin B, an isoform enriched in the head, drives the melanophore defect. These results suggest that insulin signaling is negatively regulated by melanophore-specific expression of a sheddase, highlighting how long-distance factors can be regulated in a cell-type-specific manner.
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Affiliation(s)
- Yan M Zhang
- Weill Cornell Graduate School of Medical Sciences, Cell and Developmental Biology Program, New York, NY 10065, USA; Memorial Sloan Kettering Cancer Center, Department of Cancer Biology & Genetics, New York, NY 10065, USA
| | - Milena A Zimmer
- Memorial Sloan Kettering Cancer Center, Department of Cancer Biology & Genetics, New York, NY 10065, USA
| | - Talia Guardia
- University of Maryland, School of Medicine, Baltimore, MD 21201, USA
| | - Scott J Callahan
- Memorial Sloan Kettering Cancer Center, Department of Cancer Biology & Genetics, New York, NY 10065, USA; Memorial Sloan Kettering Cancer Center, Gerstner Graduate School of Biomedical Sciences, New York, NY 10065, USA
| | - Chandrani Mondal
- Department of Medicine, Division of Hematology and Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Julie Di Martino
- Department of Medicine, Division of Hematology and Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Toshimitsu Takagi
- Memorial Sloan Kettering Cancer Center, Department of Cancer Biology & Genetics, New York, NY 10065, USA
| | - Myles Fennell
- Memorial Sloan Kettering Cancer Center, Department of Cancer Biology & Genetics, New York, NY 10065, USA
| | - Ralph Garippa
- Memorial Sloan Kettering Cancer Center, Department of Cancer Biology & Genetics, New York, NY 10065, USA
| | - Nathaniel R Campbell
- Memorial Sloan Kettering Cancer Center, Department of Cancer Biology & Genetics, New York, NY 10065, USA; Weill Cornell/Rockefeller/Sloan Kettering Tri-Institutional MD-PhD Program, New York, NY 10065, USA
| | - Jose Javier Bravo-Cordero
- Department of Medicine, Division of Hematology and Oncology, The Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Richard M White
- Memorial Sloan Kettering Cancer Center, Department of Cancer Biology & Genetics, New York, NY 10065, USA.
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17
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Thyagarajan A, Shaban A, Sahu RP. MicroRNA-Directed Cancer Therapies: Implications in Melanoma Intervention. J Pharmacol Exp Ther 2018; 364:1-12. [PMID: 29054858 PMCID: PMC5733457 DOI: 10.1124/jpet.117.242636] [Citation(s) in RCA: 37] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2017] [Accepted: 08/22/2017] [Indexed: 12/15/2022] Open
Abstract
Acquired tumor resistance to cancer therapies poses major challenges in the treatment of cancers including melanoma. Among several signaling pathways or factors that affect neocarcinogenesis, cancer progression, and therapies, altered microRNAs (miRNAs) expression has been identified as a crucial player in modulating the key pathways governing these events. While studies in the miRNA field have grown exponentially in the last decade, much remains to be discovered, particularly with respect to their roles in cancer therapies. Since immune and nonimmune signaling cascades prevail in cancers, identification and evaluation of miRNAs, their molecular mechanisms and cellular targets involved in the underlying development of cancers, and acquired therapeutic resistance would help in devising new strategies for the prognosis, treatment, and an early detection of recurrence. Importantly, in-depth validation of miRNA-targeted molecular events could lead to the development of accurate progression-risk biomarkers, improved effectiveness, and improved patient responses to standard therapies. The current review focuses on the roles of miRNAs with recent updates on regulated cell cycle and proliferation, immune responses, oncogenic/epigenetic signaling pathways, invasion, metastasis, and apoptosis, with broader attention paid to melanomagenesis and melanoma therapies.
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Affiliation(s)
- Anita Thyagarajan
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, Ohio (A.T., R.P.S.); and Department of Pharmacology, Faculty of veterinary medicine, Zagazig University, Zagazig, Egypt (A.S.)
| | - Ahmed Shaban
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, Ohio (A.T., R.P.S.); and Department of Pharmacology, Faculty of veterinary medicine, Zagazig University, Zagazig, Egypt (A.S.)
| | - Ravi Prakash Sahu
- Department of Pharmacology and Toxicology, Boonshoft School of Medicine, Wright State University, Dayton, Ohio (A.T., R.P.S.); and Department of Pharmacology, Faculty of veterinary medicine, Zagazig University, Zagazig, Egypt (A.S.)
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Momtaz S, Niaz K, Maqbool F, Abdollahi M, Rastrelli L, Nabavi SM. STAT3 targeting by polyphenols: Novel therapeutic strategy for melanoma. Biofactors 2017; 43:347-370. [PMID: 27896891 DOI: 10.1002/biof.1345] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Revised: 09/17/2016] [Accepted: 10/05/2016] [Indexed: 01/01/2023]
Abstract
Melanoma or malignant melanocytes appear with the low incidence rate, but very high mortality rate worldwide. Epidemiological studies suggest that polyphenolic compounds contribute for prevention or treatment of several cancers particularly melanoma. Such findings motivate to dig out novel therapeutic strategies against melanoma, including research toward the development of new chemotherapeutic and biologic agents that can target the tumor cells by different mechanisms. Recently, it has been found that signal transducer and activator of transcription 3 (STAT3) is activated in many cancer cases surprisingly. Different evidences supply the aspect that STAT3 activation plays a vital role in the metastasis, including proliferation of cells, survival, invasion, migration, and angiogenesis. This significant feature plays a vital role in various cellular processes, such as cell proliferation and survival. Here, we reviewed the mechanisms of the STAT3 pathway regulation and their role in promoting melanoma. Also, we have evaluated the emerging data on polyphenols (PPs) specifically their contribution in melanoma therapies with an emphasis on their regulatory/inhibitory actions in relation to STAT3 pathway and current progress in the development of phytochemical therapeutic techniques. An understanding of targeting STAT3 by PPs brings an opportunity to melanoma therapy. © 2016 BioFactors, 43(3):347-370, 2017.
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Affiliation(s)
- Saeideh Momtaz
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
- Medicinal Plants Research Center, Institute of Medicinal Plants, ACECR, Karaj, Iran
| | - Kamal Niaz
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
- International Campus, Tehran University of Medical Sciences (IC-TUMS), Tehran, Iran
| | - Faheem Maqbool
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
- International Campus, Tehran University of Medical Sciences (IC-TUMS), Tehran, Iran
| | - Mohammad Abdollahi
- Toxicology and Diseases Group, Pharmaceutical Sciences Research Center, Tehran University of Medical Sciences, Tehran, Iran
- International Campus, Tehran University of Medical Sciences (IC-TUMS), Tehran, Iran
| | - Luca Rastrelli
- Dipartimento di Farmacia, University of Salerno, Fisciano, SA, Italy
| | - Seyed Mohammad Nabavi
- Applied Biotechnology Research Center, Baqiyatallah University of Medical Sciences, Tehran, Iran
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Dakup P, Gaddameedhi S. Impact of the Circadian Clock on UV-Induced DNA Damage Response and Photocarcinogenesis. Photochem Photobiol 2016; 93:296-303. [PMID: 27861965 DOI: 10.1111/php.12662] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2016] [Accepted: 10/04/2016] [Indexed: 12/11/2022]
Abstract
The skin is in constant exposure to various external environmental stressors, including solar ultraviolet (UV) radiation. Various wavelengths of UV light are absorbed by the DNA and other molecules in the skin to cause DNA damage and induce oxidative stress. The exposure to excessive ultraviolet (UV) radiation and/or accumulation of damage over time can lead to photocarcinogenesis and photoaging. The nucleotide excision repair (NER) system is the sole mechanism for removing UV photoproduct damage from DNA, and genetic disruption of this repair pathway leads to the photosensitive disorder xeroderma pigmentosum (XP). Interestingly, recent work has shown that NER is controlled by the circadian clock, the body's natural time-keeping mechanism, through regulation of the rate-limiting repair factor xeroderma pigmentosum group A (XPA). Studies have shown reduced UV-induced skin cancer after UV exposure in the evening compared to the morning, which corresponds with times of high and low repair capacities, respectively. However, most studies of the circadian clock-NER connection have utilized murine models, and it is therefore important to translate these findings to humans to improve skin cancer prevention and chronotherapy.
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Affiliation(s)
- Panshak Dakup
- Experimental and Systems Pharmacology, College of Pharmacy, Washington State University, Spokane, WA
| | - Shobhan Gaddameedhi
- Experimental and Systems Pharmacology, College of Pharmacy, Washington State University, Spokane, WA.,Sleep and Performance Research Center, Washington State University, Spokane, WA
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Hu S, Liu Y, Yang S, Ji K, Liu X, Zhang J, Fan R, Dong C. The effects of IGF1 on the melanogenesis in alpaca melanocytes in vitro. In Vitro Cell Dev Biol Anim 2016; 52:806-11. [PMID: 27173613 DOI: 10.1007/s11626-016-0052-y] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2016] [Accepted: 04/25/2016] [Indexed: 11/29/2022]
Abstract
In order to investigate the effects of the insulin-like growth factor 1(IGF-1) on alpaca melanocyte in vitro, different dosees of IGF1 (0, 10, 20, 40 ng/ml) were added in the medium of alpaca melanocyte. The RTCA machine was used to monitor the proliferation, quantitative real-time PCR, and western blot to test the relative gene expression, ELISA to test cAMP production, and spectrum method to test the melanin production. The results showed that compared to the normal melanocyte, the proliferation of melanocytes was increased within 60 h following adding IGF1. It also showed that cAMP content produced by melanocytes was increased, microphthalmia-associtated transcription factor (MITF), tyrosinase (TYR) and tyrosinase-related protein 2 (TYRP2) expression was increased, and melanin production with most obvious change in 10 ng/ml supplementary group, when compared with the control group. The results suggested that IGF1 with the dose of 10 ng/ml had the important effects on the melanogenesis in alpaca melanocyte by the cAMP pathway.
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Affiliation(s)
- Shuaipeng Hu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, Taigu, 030801, China
| | - Yu Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, Taigu, 030801, China
| | - Shanshan Yang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, Taigu, 030801, China
| | - Kaiyuan Ji
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, Taigu, 030801, China
| | - Xuexian Liu
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, Taigu, 030801, China
| | - Junzhen Zhang
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, Taigu, 030801, China
| | - Ruiwen Fan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, Taigu, 030801, China.
| | - Changsheng Dong
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Shanxi, Taigu, 030801, China
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Le Douarin NM, Dupin E. The Pluripotency of Neural Crest Cells and Their Role in Brain Development. Curr Top Dev Biol 2016; 116:659-78. [PMID: 26970647 DOI: 10.1016/bs.ctdb.2015.10.008] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The neural crest (NC) is, in the Chordate phylum, an innovation of vertebrates, which exhibits several original characteristics: its component cells are pluripotent and give rise to both ectodermal and mesodermal cell types. Moreover, during the early stages of neurogenesis, the NC cells exert a paracrine stimulating effect on the development of the preotic brain.
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Affiliation(s)
- Nicole M Le Douarin
- Collège de France, 3 rue d'Ulm, Paris, France; INSERM U968, Paris, France; Sorbonne Universités, UPMC Univ Paris 06, UMR S 968, Institut de la Vision, Paris, France; CNRS, UMR 7210, Paris, France.
| | - Elisabeth Dupin
- INSERM U968, Paris, France; Sorbonne Universités, UPMC Univ Paris 06, UMR S 968, Institut de la Vision, Paris, France; CNRS, UMR 7210, Paris, France
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22
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The coexistence of peripheral nerve sheath tumors and vitiligo: more than coincidence? Acta Neurochir (Wien) 2016; 158:95-9; discussion 99. [PMID: 26607956 DOI: 10.1007/s00701-015-2629-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2015] [Accepted: 10/28/2015] [Indexed: 10/22/2022]
Abstract
Neurocristopathies arise from abnormal migration, differentiation, or proliferation of neural crest derivatives, leading to diverse clinical and pathological features. They are classified into dysgenetic or neoplastic, and can affect single or multiple sites (simple versus complex). Examples include congenital melanocytic nevi, neuroblastoma, Hirshsprung's disease, Waardenburg's syndrome, neurofibromatosis (NF) 1 and multiple endocrine neoplasia (MEN) 2A and 2B. We report two cases of peripheral nerve sheath tumors associated with vitiligo and discuss the possible implicated embryologic, genetic and molecular mechanisms. To our knowledge, we also report the first case of de novo malignant peripheral nerve sheath tumor (MPNST) associated with vitiligo.
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Understanding Melanocyte Stem Cells for Disease Modeling and Regenerative Medicine Applications. Int J Mol Sci 2015; 16:30458-69. [PMID: 26703580 PMCID: PMC4691150 DOI: 10.3390/ijms161226207] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2015] [Revised: 12/01/2015] [Accepted: 12/07/2015] [Indexed: 02/04/2023] Open
Abstract
Melanocytes in the skin play an indispensable role in the pigmentation of skin and its appendages. It is well known that the embryonic origin of melanocytes is neural crest cells. In adult skin, functional melanocytes are continuously repopulated by the differentiation of melanocyte stem cells (McSCs) residing in the epidermis of the skin. Many preceding studies have led to significant discoveries regarding the cellular and molecular characteristics of this unique stem cell population. The alteration of McSCs has been also implicated in several skin abnormalities and disease conditions. To date, our knowledge of McSCs largely comes from studying the stem cell niche of mouse hair follicles. Suggested by several anatomical differences between mouse and human skin, there could be distinct features associated with mouse and human McSCs as well as their niches in the skin. Recent advances in human pluripotent stem cell (hPSC) research have provided us with useful tools to potentially acquire a substantial amount of human McSCs and functional melanocytes for research and regenerative medicine applications. This review highlights recent studies and progress involved in understanding the development of cutaneous melanocytes and the regulation of McSCs.
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Basu D, Salgado CM, Bauer BS, Johnson D, Rundell V, Nikiforova M, Khakoo Y, Gunwaldt LJ, Panigrahy A, Reyes-Múgica M. Nevospheres from neurocutaneous melanocytosis cells show reduced viability when treated with specific inhibitors of NRAS signaling pathway. Neuro Oncol 2015; 18:528-37. [PMID: 26354928 DOI: 10.1093/neuonc/nov184] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2015] [Accepted: 08/04/2015] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Neurocutaneous melanocytosis (NCM) is characterized by clonal nevomelanocytic proliferations in the CNS and skin. Given the scarcity of effective therapeutic targets, testing new drugs requires a reliable and reproducible in vitro cellular model of the disease. METHODS We generated nevomelanocytic spheroids in vitro from lesions of the spinal cord, brain, and skin from 4 NCM patients. Nevomelanocytic cells were grown as monolayers or spheroids and their growth characteristics were evaluated. Cultured cell identity was confirmed by demonstration of the same NRAS mutation found in the original lesions and by immunophenotyping. Nevomelanocytic spheroids were treated with inhibitors of specific mediators of the NRAS signaling pathway (vemurafenib, MEK162, GDC0941, and GSK2126458). Drug sensitivity and cell viability were assessed. RESULTS Cultured cells were growth-factor dependent, grew as spheroids on Geltrex matrix, and maintained their clonogenicity in vitro over passages. Skin-derived cells formed more colonies than CNS-derived cells. Inhibitors of specific mediators of the NRAS signaling pathway reduced viability of NRAS mutated cells. The highest effect was obtained with GSK2126458, showing a viability reduction below 50%. CONCLUSIONS NRAS mutated cells derived from clinical NCM samples are capable of continuous growth as spheroid colonies in vitro and retain their genetic identity. Drugs targeting the NRAS signaling pathway reduce in vitro viability of NCM cells. NCM lesional spheroids represent a new and reliable experimental model of NCM for use in drug testing and mechanistic studies.
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Affiliation(s)
- Dipanjan Basu
- Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (D.B., C.M.S., M.R.M.); Department of Plastic Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (L.J.G.); Department of Radiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (A.P.); Division of Plastic and Reconstructive Surgery, NorthShore University HealthSystem, Northbrook, Illinois (B.S.B., D.J., V.R.); Division of Molecular Genomic Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (M.N.); Department of Pediatrics and Neurology, Memorial Sloan Kettering Cancer Center, New York, New York (Y.K.); Department of Pediatrics, Weill Cornell Medical College, New York, New York (Y.K.)
| | - Cláudia M Salgado
- Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (D.B., C.M.S., M.R.M.); Department of Plastic Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (L.J.G.); Department of Radiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (A.P.); Division of Plastic and Reconstructive Surgery, NorthShore University HealthSystem, Northbrook, Illinois (B.S.B., D.J., V.R.); Division of Molecular Genomic Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (M.N.); Department of Pediatrics and Neurology, Memorial Sloan Kettering Cancer Center, New York, New York (Y.K.); Department of Pediatrics, Weill Cornell Medical College, New York, New York (Y.K.)
| | - Bruce S Bauer
- Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (D.B., C.M.S., M.R.M.); Department of Plastic Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (L.J.G.); Department of Radiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (A.P.); Division of Plastic and Reconstructive Surgery, NorthShore University HealthSystem, Northbrook, Illinois (B.S.B., D.J., V.R.); Division of Molecular Genomic Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (M.N.); Department of Pediatrics and Neurology, Memorial Sloan Kettering Cancer Center, New York, New York (Y.K.); Department of Pediatrics, Weill Cornell Medical College, New York, New York (Y.K.)
| | - Donald Johnson
- Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (D.B., C.M.S., M.R.M.); Department of Plastic Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (L.J.G.); Department of Radiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (A.P.); Division of Plastic and Reconstructive Surgery, NorthShore University HealthSystem, Northbrook, Illinois (B.S.B., D.J., V.R.); Division of Molecular Genomic Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (M.N.); Department of Pediatrics and Neurology, Memorial Sloan Kettering Cancer Center, New York, New York (Y.K.); Department of Pediatrics, Weill Cornell Medical College, New York, New York (Y.K.)
| | - Veronica Rundell
- Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (D.B., C.M.S., M.R.M.); Department of Plastic Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (L.J.G.); Department of Radiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (A.P.); Division of Plastic and Reconstructive Surgery, NorthShore University HealthSystem, Northbrook, Illinois (B.S.B., D.J., V.R.); Division of Molecular Genomic Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (M.N.); Department of Pediatrics and Neurology, Memorial Sloan Kettering Cancer Center, New York, New York (Y.K.); Department of Pediatrics, Weill Cornell Medical College, New York, New York (Y.K.)
| | - Marina Nikiforova
- Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (D.B., C.M.S., M.R.M.); Department of Plastic Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (L.J.G.); Department of Radiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (A.P.); Division of Plastic and Reconstructive Surgery, NorthShore University HealthSystem, Northbrook, Illinois (B.S.B., D.J., V.R.); Division of Molecular Genomic Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (M.N.); Department of Pediatrics and Neurology, Memorial Sloan Kettering Cancer Center, New York, New York (Y.K.); Department of Pediatrics, Weill Cornell Medical College, New York, New York (Y.K.)
| | - Yasmin Khakoo
- Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (D.B., C.M.S., M.R.M.); Department of Plastic Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (L.J.G.); Department of Radiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (A.P.); Division of Plastic and Reconstructive Surgery, NorthShore University HealthSystem, Northbrook, Illinois (B.S.B., D.J., V.R.); Division of Molecular Genomic Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (M.N.); Department of Pediatrics and Neurology, Memorial Sloan Kettering Cancer Center, New York, New York (Y.K.); Department of Pediatrics, Weill Cornell Medical College, New York, New York (Y.K.)
| | - Lorelei J Gunwaldt
- Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (D.B., C.M.S., M.R.M.); Department of Plastic Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (L.J.G.); Department of Radiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (A.P.); Division of Plastic and Reconstructive Surgery, NorthShore University HealthSystem, Northbrook, Illinois (B.S.B., D.J., V.R.); Division of Molecular Genomic Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (M.N.); Department of Pediatrics and Neurology, Memorial Sloan Kettering Cancer Center, New York, New York (Y.K.); Department of Pediatrics, Weill Cornell Medical College, New York, New York (Y.K.)
| | - Ashok Panigrahy
- Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (D.B., C.M.S., M.R.M.); Department of Plastic Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (L.J.G.); Department of Radiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (A.P.); Division of Plastic and Reconstructive Surgery, NorthShore University HealthSystem, Northbrook, Illinois (B.S.B., D.J., V.R.); Division of Molecular Genomic Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (M.N.); Department of Pediatrics and Neurology, Memorial Sloan Kettering Cancer Center, New York, New York (Y.K.); Department of Pediatrics, Weill Cornell Medical College, New York, New York (Y.K.)
| | - Miguel Reyes-Múgica
- Department of Pathology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (D.B., C.M.S., M.R.M.); Department of Plastic Surgery, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (L.J.G.); Department of Radiology, Children's Hospital of Pittsburgh, Pittsburgh, Pennsylvania (A.P.); Division of Plastic and Reconstructive Surgery, NorthShore University HealthSystem, Northbrook, Illinois (B.S.B., D.J., V.R.); Division of Molecular Genomic Pathology, University of Pittsburgh School of Medicine, Pittsburgh, Pennsylvania (M.N.); Department of Pediatrics and Neurology, Memorial Sloan Kettering Cancer Center, New York, New York (Y.K.); Department of Pediatrics, Weill Cornell Medical College, New York, New York (Y.K.)
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Aftab MN, Dinger ME, Perera RJ. The role of microRNAs and long non-coding RNAs in the pathology, diagnosis, and management of melanoma. Arch Biochem Biophys 2014; 563:60-70. [PMID: 25065585 PMCID: PMC4221535 DOI: 10.1016/j.abb.2014.07.022] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2014] [Revised: 07/14/2014] [Accepted: 07/17/2014] [Indexed: 12/21/2022]
Abstract
Melanoma is frequently lethal and its global incidence is steadily increasing. Despite the rapid development of different modes of targeted treatment, durable clinical responses remain elusive. A complete understanding of the molecular mechanisms that drive melanomagenesis is required, both genetic and epigenetic, in order to improve prevention, diagnosis, and treatment. There is increased appreciation of the role of microRNAs (miRNAs) in melanoma biology, including in proliferation, cell cycle, migration, invasion, and immune evasion. Data are also emerging on the role of long non-coding RNAs (lncRNAs), such as SPRY4-IT1, BANCR, and HOTAIR, in melanomagenesis. Here we review the data on the miRNAs and lncRNAs implicated in melanoma biology. An overview of these studies will be useful for providing insights into mechanisms of melanoma development and the miRNAs and lncRNAs that might be useful biomarkers or future therapeutic targets.
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Affiliation(s)
- Muhammad Nauman Aftab
- Sanford-Burnham Medical Research Institute, Orlando, FL 32827, USA; Institute of Industrial Biotechnology, Government College University, Katchery Road, Lahore 54000, Pakistan
| | - Marcel E Dinger
- Garvan Institute of Medical Research and St Vincent's Clinical School, University of New South Wales, Darlinghurst NSW 2010, Australia
| | - Ranjan J Perera
- Sanford-Burnham Medical Research Institute, Orlando, FL 32827, USA.
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26
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Dupin E, Le Douarin NM. The neural crest, a multifaceted structure of the vertebrates. ACTA ACUST UNITED AC 2014; 102:187-209. [PMID: 25219958 DOI: 10.1002/bdrc.21080] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2014] [Accepted: 08/22/2014] [Indexed: 12/29/2022]
Abstract
In this review, several features of the cells originating from the lateral borders of the primitive neural anlagen, the neural crest (NC) are considered. Among them, their multipotentiality, which together with their migratory properties, leads them to colonize the developing body and to participate in the development of many tissues and organs. The in vitro analysis of the developmental capacities of single NC cells (NCC) showed that they present several analogies with the hematopoietic cells whose differentiation involves the activity of stem cells endowed with different arrays of developmental potentialities. The permanence of such NC stem cells in the adult organism raises the problem of their role at that stage of life. The NC has appeared during evolution in the vertebrate phylum and is absent in their Protocordates ancestors. The major role of the NCC in the development of the vertebrate head points to a critical role for this structure in the remarkable diversification and radiation of this group of animals.
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Affiliation(s)
- Elisabeth Dupin
- INSERM, U968, Paris, F-75012, France; Sorbonne Universités, UPMC Univ Paris 06, UMR_S 968, Institut de la Vision, Paris, F-75012, France; CNRS, UMR_7210, Paris, F-75012, France
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27
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Abstract
INTRODUCTION Melanocytes produce pigment granules that color both skin and hair. In the hair follicles melanocytes are derived from stem cells (MelSCs) that are present in hair bulges or sub-bulge regions and function as melanocyte reservoirs. Quiescence, maintenance, activation and proliferation of MelSCs are controlled by specific activities in the microenvironment that can influence the differentiation and regeneration of melanocytes. Therefore, understanding MelSCs and their niche may lead to use of MelSCs in new treatments for various pigmentation disorders. AREAS COVERED We describe here pathophysiological mechanisms by which melanocyte defects lead to skin pigmentation disorders such as vitiligo and hair graying. The development, migration and proliferation of melanocytes and factors involved in the survival, maintenance and regeneration of MelSCs are reviewed with regard to the biological roles and potential therapeutic applications in skin pigmentation diseases. EXPERT OPINION MelSC biology and niche factors have been studied mainly in murine experimental models. Human MelSC markers or methods to isolate them are much less well understood. Identification, isolation and culturing of human MelSCs would represent a major step toward new biological therapeutic options for patients with recalcitrant pigmentary disorders or hair graying. By modulating the niche factors for MelSCs, it may one day be possible to control skin pigmentary disorders and prevent or reverse hair graying.
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Affiliation(s)
- Ju Hee Lee
- Massachusetts General Hospital, Harvard Medical School, Department of Dermatology and Cutaneous Biology Research Center , Boston, MA 02129 , USA +1 617 643 5428 ; +1 617 643 6588 ;
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28
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Denecker G, Vandamme N, Akay O, Koludrovic D, Taminau J, Lemeire K, Gheldof A, De Craene B, Van Gele M, Brochez L, Udupi GM, Rafferty M, Balint B, Gallagher WM, Ghanem G, Huylebroeck D, Haigh J, van den Oord J, Larue L, Davidson I, Marine JC, Berx G. Identification of a ZEB2-MITF-ZEB1 transcriptional network that controls melanogenesis and melanoma progression. Cell Death Differ 2014; 21:1250-61. [PMID: 24769727 DOI: 10.1038/cdd.2014.44] [Citation(s) in RCA: 152] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Revised: 02/17/2014] [Accepted: 03/10/2014] [Indexed: 12/15/2022] Open
Abstract
Deregulation of signaling pathways that control differentiation, expansion and migration of neural crest-derived melanoblasts during normal development contributes also to melanoma progression and metastasis. Although several epithelial-to-mesenchymal (EMT) transcription factors, such as zinc finger E-box binding protein 1 (ZEB1) and ZEB2, have been implicated in neural crest cell biology, little is known about their role in melanocyte homeostasis and melanoma. Here we show that mice lacking Zeb2 in the melanocyte lineage exhibit a melanoblast migration defect and, unexpectedly, a severe melanocyte differentiation defect. Loss of Zeb2 in the melanocyte lineage results in a downregulation of the Microphthalmia-associated transcription factor (Mitf) and melanocyte differentiation markers concomitant with an upregulation of Zeb1. We identify a transcriptional signaling network in which the EMT transcription factor ZEB2 regulates MITF levels to control melanocyte differentiation. Moreover, our data are also relevant for human melanomagenesis as loss of ZEB2 expression is associated with reduced patient survival.
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Affiliation(s)
- G Denecker
- 1] Unit of Molecular and Cellular Oncology, Inflammation Research Center, VIB, 9052 Ghent, Belgium [2] Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - N Vandamme
- 1] Unit of Molecular and Cellular Oncology, Inflammation Research Center, VIB, 9052 Ghent, Belgium [2] Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - O Akay
- 1] Unit of Molecular and Cellular Oncology, Inflammation Research Center, VIB, 9052 Ghent, Belgium [2] Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - D Koludrovic
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS, INSERM, Université de Strasbourg, Illkirch, France
| | - J Taminau
- 1] Unit of Molecular and Cellular Oncology, Inflammation Research Center, VIB, 9052 Ghent, Belgium [2] Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - K Lemeire
- Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - A Gheldof
- 1] Unit of Molecular and Cellular Oncology, Inflammation Research Center, VIB, 9052 Ghent, Belgium [2] Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - B De Craene
- 1] Unit of Molecular and Cellular Oncology, Inflammation Research Center, VIB, 9052 Ghent, Belgium [2] Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
| | - M Van Gele
- Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium
| | - L Brochez
- Department of Dermatology, Ghent University Hospital, 9000 Ghent, Belgium
| | - G M Udupi
- 1] UCD School of Biomolecular and Biomedical Science, UCD Conway Institute, University College, Dublin 4, Ireland [2] OncoMark Limited, Nova UCD, Belfield Innovation Park, University College Dublin, Belfield, Dublin 4, Ireland
| | - M Rafferty
- OncoMark Limited, Nova UCD, Belfield Innovation Park, University College Dublin, Belfield, Dublin 4, Ireland
| | - B Balint
- OncoMark Limited, Nova UCD, Belfield Innovation Park, University College Dublin, Belfield, Dublin 4, Ireland
| | - W M Gallagher
- 1] UCD School of Biomolecular and Biomedical Science, UCD Conway Institute, University College, Dublin 4, Ireland [2] OncoMark Limited, Nova UCD, Belfield Innovation Park, University College Dublin, Belfield, Dublin 4, Ireland
| | - G Ghanem
- Institute Jules Bordet, Brussels, Belgium
| | - D Huylebroeck
- 1] Laboratory of Molecular Biology (Celgen), Department of Development and Regeneration, KU Leuven, 3000 Leuven, Belgium [2] Department of Cell Biology, Erasmus MC, 3015 GE Rotterdam, The Netherlands
| | - J Haigh
- 1] Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium [2] Vascular Cell Biology Unit, Department for Molecular Biomedical Research, VIB, Ghent, Belgium
| | - J van den Oord
- Department of Pathology, University Hospital Leuven, KU Leuven, Leuven, Belgium
| | - L Larue
- Curie Institute, Developmental Genetics of Melanocytes, Centre National de la Recherche Scientifique (CNRS) UMR3347, Institut National de la Santé et de la Recherche Médicale (INSERM) U1021, Orsay, France
| | - I Davidson
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, CNRS, INSERM, Université de Strasbourg, Illkirch, France
| | - J-C Marine
- 1] Center for the Biology of Disease, Laboratory for Molecular Cancer Biology, VIB, Leuven, Belgium [2] Center for Human Genetics, KU Leuven, Leuven, Belgium
| | - G Berx
- 1] Unit of Molecular and Cellular Oncology, Inflammation Research Center, VIB, 9052 Ghent, Belgium [2] Department of Biomedical Molecular Biology, Ghent University, 9052 Ghent, Belgium
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Blake JA, Ziman MR. Pax genes: regulators of lineage specification and progenitor cell maintenance. Development 2014; 141:737-51. [PMID: 24496612 DOI: 10.1242/dev.091785] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Pax genes encode a family of transcription factors that orchestrate complex processes of lineage determination in the developing embryo. Their key role is to specify and maintain progenitor cells through use of complex molecular mechanisms such as alternate RNA splice forms and gene activation or inhibition in conjunction with protein co-factors. The significance of Pax genes in development is highlighted by abnormalities that arise from the expression of mutant Pax genes. Here, we review the molecular functions of Pax genes during development and detail the regulatory mechanisms by which they specify and maintain progenitor cells across various tissue lineages. We also discuss mechanistic insights into the roles of Pax genes in regeneration and in adult diseases, including cancer.
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Affiliation(s)
- Judith A Blake
- School of Medical Sciences, Edith Cowan University, Joondalup, WA 6027, Australia
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Syrjänen L, Luukkaala T, Leppilampi M, Kallioinen M, Pastorekova S, Pastorek J, Waheed A, Sly WS, Parkkila S, Karttunen T. Expression of cancer-related carbonic anhydrases IX and XII in normal skin and skin neoplasms. APMIS 2014; 122:880-9. [PMID: 24698175 DOI: 10.1111/apm.12251] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 12/20/2013] [Indexed: 12/25/2022]
Abstract
Purpose of the study was to evaluate the presence of hypoxia-inducible, tumour-associated carbonic anhydrases IX and XII in normal skin and a series of cutaneous tumours. Human tumour samples were taken during surgical operations performed on 245 patients and were immunohistochemically stained. A histological score value was calculated for statistical analyses which were performed using SPSS for Windows, versions 17.0 and 20.0. In normal skin, the highest expression of CA IX was detected in hair follicles, sebaceous glands, and basal parts of epidermis. CA XII was detected in all epithelial components of skin. Both CA IX and CA XII expression levels were significantly different in epidermal, appendigeal, and melanocytic tumour categories. Both CA IX and XII showed the most intense immunostaining in epidermal tumours, whereas virtually all melanocytic tumours were devoid of CA IX and XII immunostaining. In premalignant lesions, CA IX expression significantly increased when the tumours progressed to more severe dysplasia forms. Both CA IX and XII are highly expressed in different epithelial components of skin. They are also highly expressed in epidermal tumours, in which CA IX expression levels also correlate with the dysplasia grade. Interestingly, both isozymes are absent in melanocytic tumours.
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Affiliation(s)
- Leo Syrjänen
- Institute of Biomedical Technology and School of Medicine, University of Tampere, Tampere, Finland
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31
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Tokuda EY, Leight JL, Anseth KS. Modulation of matrix elasticity with PEG hydrogels to study melanoma drug responsiveness. Biomaterials 2014; 35:4310-8. [PMID: 24565518 DOI: 10.1016/j.biomaterials.2014.01.063] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2013] [Accepted: 01/24/2014] [Indexed: 01/05/2023]
Abstract
Metastatic melanoma is highly resistant to drug treatment, and the underlying mechanisms of this resistance remain unclear. Increased tissue stiffness is correlated with tumor progression, but whether increased tissue stiffness contributes to treatment resistance in melanoma is not known. To investigate the effect of substrate stiffness on melanoma cell treatment responsiveness, PEG hydrogels were utilized as a cell culture system to precisely vary matrix elasticity and investigate melanoma cell responses to a commercially available pharmacological inhibitor (PLX4032). The tensile moduli were varied between 0.6 and 13.1 kPa (E) and the effects of PLX4032 on metabolic activity, apoptosis, and proliferation were evaluated on human cell lines derived from radial growth phase (WM35) and metastatic melanoma (A375). The A375 cells were found to be stiffness-independent; matrix elasticity did not alter cell morphology or apoptosis with PLX4032 treatment. The WM35 cells, however, were more dependent on substrate modulus, displaying increased apoptosis and smaller focal adhesions on compliant substrates. Culturing melanoma cells on PEG hydrogels revealed stage-dependent responses to PLX4032 that would have otherwise been masked if cultured strictly on TCPS. These findings demonstrate the utility of PEG hydrogels as a versatile in vitro culture platform with which to investigate the molecular mechanisms of melanoma biology and treatment responsiveness.
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Affiliation(s)
- Emi Y Tokuda
- Department of Chemical and Biological Engineering, University of Colorado at Boulder, Boulder, CO 80309, USA
| | - Jennifer L Leight
- Department of Chemical and Biological Engineering, University of Colorado at Boulder, Boulder, CO 80309, USA; Howard Hughes Medical Institute and The BioFrontiers Institute, University of Colorado at Boulder, Boulder, CO 80309, USA
| | - Kristi S Anseth
- Department of Chemical and Biological Engineering, University of Colorado at Boulder, Boulder, CO 80309, USA; Howard Hughes Medical Institute and The BioFrontiers Institute, University of Colorado at Boulder, Boulder, CO 80309, USA.
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32
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High prevalence of angiotropism in congenital melanocytic nevi: an analysis of 53 cases. Am J Dermatopathol 2013; 35:180-3. [PMID: 22771898 DOI: 10.1097/dad.0b013e318260908c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The mechanisms responsible for the development of congenital melanocytic nevi (CMN) have yet to be elucidated. A potential clue to their origin is the observation of angiotropism of nevus cells in CMN. Interestingly, neural crest stem cells (NCSCs), the precursors of melanocytes, demonstrate angiotropism in the embryo. There is accumulating evidence that NCSCs migrate along the external surfaces of vessels during a portion of their journey to the skin. Comparable angiotropism and migration of melanoma cells have been described as extravascular migratory metastasis in melanoma. In this report, we systematically examined for the first time, the frequency of angiotropism in 53 CMN. The lesions originated from 27 females and 26 males with an average age of 9.81 years (range 0.42-28 years). The mean nevus size was 7.43 cm (range 0.3-40 cm). Twenty-seven (50.9%) of the 53 lesions were less than 1.5 cm in diameter. Sixteen nevi (30.2%) were medium sized (1.5-19.9 cm), and 10 CMN (18.9%) were large/giant (>20 cm in diameter). The trunk was the most common location (23/53) followed by the head and neck (17/53). Thirty-eight (71.7%) of the 53 lesions were compound melanocytic nevi, and 15 (28.3%) of the 53 lesions were dermal nevi. In summary, angiotropism was observed in 50 (94.3%) of 53 cases. Consequently, such angiotropism may potentially explain the origin of the precursor cells giving rise to CMN. Further explanations concerning dysregulated growth are clearly needed for the actual appearance of CMN and their physical characteristics.
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Van Raamsdonk CD, Deo M. Links between Schwann cells and melanocytes in development and disease. Pigment Cell Melanoma Res 2013; 26:634-45. [DOI: 10.1111/pcmr.12134] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Accepted: 06/28/2013] [Indexed: 01/31/2023]
Affiliation(s)
| | - Mugdha Deo
- Department of Medical Genetics; University of British Columbia; Vancouver; BC; Canada
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Jian J, Guoying W, Jing Z. Increased expression of sex determining region Y-box 11 (SOX11) in cutaneous malignant melanoma. J Int Med Res 2013; 41:1221-7. [PMID: 23867449 DOI: 10.1177/0300060513476592] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
OBJECTIVES To observe sex determining region Y-box 11 (SOX11) gene expression in cutaneous malignant melanoma and its effect on tumour cell proliferation. METHODS Clinicopathological data and tissue samples from patients with cutaneous malignant melanoma, together with tissue samples from healthy volunteers (controls), were retrospectively reviewed. Protein levels of SOX11 and the antigen identified by monoclonal antibody Ki-67 (Ki-67) in skin lesions were analysed using immunohistochemistry. The correlation between protein levels and clinipathological parameters was investigated. RESULTS Out of 40 patient samples, 25 (62.5%) were positive for SOX11 protein in malignant melanoma tissue. This was significantly higher than in 40 control tissue samples, in which no SOX11 protein was detected. Presence of SOX11 protein was positively related to the proliferation index of cutaneous malignant melanoma tumour cells. Presence of SOX11 protein in cutaneous malignant melanoma was related to tumour type, tumour location, lymph node metastasis and 5-year survival rate. CONCLUSION Human cutaneous malignant melanoma tissues expressed high levels of SOX11 compared with healthy controls, suggesting that SOX11 may be a new prognostic marker for malignant melanoma.
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Affiliation(s)
- Jiao Jian
- Department of Dermatology, Qilu Hospital, Shandong University, Jinan, China.
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35
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36
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Damsky WE, Theodosakis N, Bosenberg M. Melanoma metastasis: new concepts and evolving paradigms. Oncogene 2013; 33:2413-22. [PMID: 23728340 DOI: 10.1038/onc.2013.194] [Citation(s) in RCA: 102] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2013] [Revised: 04/22/2013] [Accepted: 04/22/2013] [Indexed: 12/25/2022]
Abstract
Melanoma progression is typically depicted as a linear and stepwise process in which metastasis occurs relatively late in disease progression. Significant evidence suggests that in a subset of melanomas, progression is much more complex and less linear in nature. Epidemiologic and experimental observations in melanoma metastasis are reviewed here and are incorporated into a comprehensive model for melanoma metastasis, which takes into account the varied natural history of melanoma formation and progression.
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Affiliation(s)
- W E Damsky
- 1] Department of Dermatology, Yale University School of Medicine, New Haven, CT, USA [2] Department of Pathology, University of Vermont College of Medicine, Burlington, VT, USA
| | - N Theodosakis
- Department of Dermatology, Yale University School of Medicine, New Haven, CT, USA
| | - M Bosenberg
- Department of Dermatology, Yale University School of Medicine, New Haven, CT, USA
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37
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Abstract
AbstractThe majority of melanocytes originate from the neural crest cells (NCC) that migrate, spread on the whole embryo’s body to form elements of the nervous system and skeleton, endocrinal glands, muscles and melanocytes. Human melanocytes differentiate mainly from the cranial and trunk NCC. Although melanocyte development has traditionally been associated with the dorsally migrating trunk NCC, there is evidence that a part of melanocytes arise from cells migrating ventrally. The ventral NCC differentiate into neurons and glia of the ganglia or Schwann cells. It has been suggested that the precursors for Schwann cells differentiate into melanocytes. As melanoblasts travel through the dermis, they multiply, follow the process of differentiation and invade the forming human fetal epidermis up to third month. After birth, melanocytes lose the ability to proliferate, except the hair melanocytes that renew during the hair cycle. The localization of neural crest-derived melanocytes in non-cutaneous places e.g. eye (the choroid and stroma of the iris and the ciliary body), ear (cells of the vestibular organ, cochlear stria vascularis), meninges of the brain, heart seems to indicate that repertoire of melanocyte functions is much wider than we expected e.g. the protection of tissues from potentially harmful factors (e.g. free radicals, binding toxins), storage ions, and anti-inflammatory action.
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Jones V, Katiyar SK. Emerging phytochemicals for prevention of melanoma invasion. Cancer Lett 2013; 335:251-8. [PMID: 23474498 DOI: 10.1016/j.canlet.2013.02.056] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2013] [Revised: 02/19/2013] [Accepted: 02/22/2013] [Indexed: 12/31/2022]
Abstract
Cutaneous malignant melanoma is the leading cause of death from skin diseases due to its propensity to metastasize. Once diagnosed with metastatic melanoma, most patients will die of their disease within 2years. As suppression of metastases requires long-term interventions, potential anti-metastatic agents must not only be efficacious but also have low toxicity. Many phytochemicals used in traditional medicine have low toxicity and recent studies suggest that some are promising candidates for the prevention or treatment of metastatic melanoma. Here, we review the recent literature regarding phytochemicals that have shown inhibitory effects on melanoma cell migration or invasion.
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Affiliation(s)
- Virginia Jones
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL 35294, USA
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Cichorek M, Wachulska M, Stasiewicz A, Tymińska A. Skin melanocytes: biology and development. Postepy Dermatol Alergol 2013; 30:30-41. [PMID: 24278043 PMCID: PMC3834696 DOI: 10.5114/pdia.2013.33376] [Citation(s) in RCA: 334] [Impact Index Per Article: 30.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2012] [Revised: 08/15/2012] [Accepted: 10/24/2012] [Indexed: 01/03/2023] Open
Abstract
In the human skin, melanocytes are present in the epidermis and hair follicles. The basic features of these cells are the ability to melanin production and the origin from neural crest cells. This last element is important because there are other cells able to produce melanin but of different embryonic origin (pigmented epithelium of retina, some neurons, adipocytes). The life cycle of melanocyte consists of several steps including differentiation of melanocyte lineage/s from neural crest, migration and proliferation of melanoblasts, differentiation of melanoblasts into melanocytes, proliferation and maturation of melanocytes at the target places (activity of melanogenic enzymes, melanosome formation and transport to keratinocytes) and eventual cell death (hair melanocytes). Melanocytes of the epidermis and hair are cells sharing some common features but in general they form biologically different populations living in unique niches of the skin.
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Affiliation(s)
- Mirosława Cichorek
- Department of Embryology, Medical University of Gdansk, Poland. Head: Mirosława Cichorek PhD
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Extrafollicular dermal melanocyte stem cells and melanoma. Stem Cells Int 2012; 2012:407079. [PMID: 22666269 PMCID: PMC3359770 DOI: 10.1155/2012/407079] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2011] [Accepted: 02/13/2012] [Indexed: 12/27/2022] Open
Abstract
Recent studies suggest that extrafollicular dermal melanocyte stem cells (MSCs) persist after birth in the superficial nerve sheath of peripheral nerves and give rise to migratory melanocyte precursors when replacements for epidermal melanocytes are needed on the basal epidermal layer of the skin. If a damaged MSC or melanocyte precursor can be shown to be the primary origin of melanoma, targeted identification and eradication of it by antibody-based therapies will be the best method to treat melanoma and a very effective way to prevent its recurrence. Transcription factors and signaling pathways involved in MSC self-renewal, expansion and differentiation are reviewed. A model is presented to show how the detrimental effects of long-term UVA/UVB radiation on DNA and repair mechanisms in MSCs convert them to melanoma stem cells. Zebrafish have many advantages for investigating the role of MSCs in the development of melanoma. The signaling pathways regulating the development of MSCs in zebrafish are very similar to those found in humans and mice. The ability to easily manipulate the MSC population makes zebrafish an excellent model for studying how damage to MSCs may lead to melanoma.
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Hari L, Miescher I, Shakhova O, Suter U, Chin L, Taketo M, Richardson WD, Kessaris N, Sommer L. Temporal control of neural crest lineage generation by Wnt/β-catenin signaling. Development 2012; 139:2107-17. [PMID: 22573620 DOI: 10.1242/dev.073064] [Citation(s) in RCA: 99] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Wnt/β-catenin signaling controls multiple steps of neural crest development, ranging from neural crest induction, lineage decisions, to differentiation. In mice, conditional β-catenin inactivation in premigratory neural crest cells abolishes both sensory neuron and melanocyte formation. Intriguingly, the generation of melanocytes is also prevented by activation of β-catenin in the premigratory neural crest, which promotes sensory neurogenesis at the expense of other neural crest derivatives. This raises the question of how Wnt/β-catenin signaling regulates the formation of distinct lineages from the neural crest. Using various Cre lines to conditionally activate β-catenin in neural crest cells at different developmental stages, we show that neural crest cell fate decisions in vivo are subject to temporal control by Wnt/β-catenin. Unlike in premigratory neural crest, β-catenin activation in migratory neural crest cells promotes the formation of ectopic melanoblasts, while the production of most other lineages is suppressed. Ectopic melanoblasts emerge at sites of neural crest target structures and in many tissues usually devoid of neural crest-derived cells. β-catenin activation at later stages in glial progenitors or in melanoblasts does not lead to surplus melanoblasts, indicating a narrow time window of Wnt/β-catenin responsiveness during neural crest cell migration. Thus, neural crest cells appear to be multipotent in vivo both before and after emigration from the neural tube but adapt their response to extracellular signals in a temporally controlled manner.
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Affiliation(s)
- Lisette Hari
- Cell and Developmental Biology, Institute of Anatomy, University of Zurich, CH-8057 Zurich, Switzerland
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Abstract
Cutaneous melanoma originates from pigment producing melanocytes or their precursors and is considered the deadliest form of skin cancer. For the last 40 years, few treatment options were available for patients with late-stage melanoma. However, remarkable advances in the therapy field were made recently, leading to the approval of two new drugs, the mutant BRAF inhibitor vemurafenib and the immunostimulant ipilimumab. Although these drugs prolong patients' lives, neither drug cures the disease completely, emphasizing the need for improvements of current therapies. Our knowledge about the complex genetic and biological mechanisms leading to melanoma development has increased, but there are still gaps in our understanding of the early events of melanocyte transformation and disease progression. In this review, we present a summary of the main contributing factors leading to melanocyte transformation and discuss recent novel findings and technologies that will help answer some of the key biological melanoma questions and lay the groundwork for novel therapies.
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Affiliation(s)
- Ana Slipicevic
- The Wistar Institute, Philadelphia, Pennsylvania, USA
- Department of Pathology, The Norwegian Radium Hospital, Oslo University Hospital, Oslo, Norway
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Adameyko I, Lallemend F, Furlan A, Zinin N, Aranda S, Kitambi SS, Blanchart A, Favaro R, Nicolis S, Lübke M, Müller T, Birchmeier C, Suter U, Zaitoun I, Takahashi Y, Ernfors P. Sox2 and Mitf cross-regulatory interactions consolidate progenitor and melanocyte lineages in the cranial neural crest. Development 2012; 139:397-410. [PMID: 22186729 DOI: 10.1242/dev.065581] [Citation(s) in RCA: 117] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
The cellular origin and molecular mechanisms regulating pigmentation of head and neck are largely unknown. Melanocyte specification is controlled by the transcriptional activity of Mitf, but no general logic has emerged to explain how Mitf and progenitor transcriptional activities consolidate melanocyte and progenitor cell fates. We show that cranial melanocytes arise from at least two different cellular sources: initially from nerve-associated Schwann cell precursors (SCPs) and later from a cellular source that is independent of nerves. Unlike the midbrain-hindbrain cluster from which melanoblasts arise independently of nerves, a large center of melanocytes in and around cranial nerves IX-X is derived from SCPs, as shown by genetic cell-lineage tracing and analysis of ErbB3-null mutant mice. Conditional gain- and loss-of-function experiments show genetically that cell fates in the neural crest involve both the SRY transcription factor Sox2 and Mitf, which consolidate an SCP progenitor or melanocyte fate by cross-regulatory interactions. A gradual downregulation of Sox2 in progenitors during development permits the differentiation of both neural crest- and SCP-derived progenitors into melanocytes, and an initial small pool of nerve-associated melanoblasts expands in number and disperses under the control of endothelin receptor B (Ednrb) and Wnt5a signaling.
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Affiliation(s)
- Igor Adameyko
- Unit of Molecular Neurobiology, Department of Medical Biochemistry and Biophysics, Karolinska Institute, 17177 Stockholm, Sweden
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Nys K, Agostinis P. Bcl-2 family members: essential players in skin cancer. Cancer Lett 2012; 320:1-13. [PMID: 22281242 DOI: 10.1016/j.canlet.2012.01.031] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Revised: 01/17/2012] [Accepted: 01/18/2012] [Indexed: 12/11/2022]
Abstract
Skin cancer has reached epidemic proportions and is considered to be a direct consequence of ultraviolet (UV) radiation exposure. Excessive exposure of epidermal cells to UV results in apoptosis of irreparably damaged cells to avoid malignant transformation. The Bcl-2 family of proteins is emerging as a crucial regulator of epidermal homeostasis and cell's fate in the stressed skin. Not surprisingly, deregulation of Bcl-2 family members is also chiefly involved in skin carcinogenesis and response to cancer therapy. Here we discuss the physiopathological role of epidermal Bcl-2 family members, their implications in skin carcinogenesis and as potential targets in cancer therapy.
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Affiliation(s)
- Kris Nys
- Cell Death Research & Therapy Unit, Department for Molecular Cell Biology, Catholic University of Leuven, Leuven, Belgium
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Abstract
The neural crest is a transient structure in vertebrate embryos that generates multiple neural and mesenchymal cell types as well as melanocytes. Melanocytes in the skin either derive directly from neural crest cells populating the skin via a dorsolateral migratory pathway or arise by detaching from nerves innervating the skin. Several transcription factors, such as FoxD3, Sox10, Pax3, and Mitf, take part in a genetic network regulating melanocyte formation from the neural crest. The activity of these intrinsic factors is controlled and modulated by extracellular signals including canonical Wnt, Edn, Kitl, and other signals that remain to be identified. Here, we summarize the current view of how melanocytes are specified from the neural crest and put this process into the context of spatiotemporal lineage decisions in neural crest cells.
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Affiliation(s)
- Lukas Sommer
- Cell and Developmental Biology, Institute of Anatomy, University of Zurich, Winterthurerstrasse, Zurich, Switzerland.
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Gunnarsson U, Kerje S, Bed'hom B, Sahlqvist AS, Ekwall O, Tixier-Boichard M, Kämpe O, Andersson L. The Dark brown plumage color in chickens is caused by an 8.3-kb deletion upstream of SOX10. Pigment Cell Melanoma Res 2011; 24:268-74. [PMID: 21210960 DOI: 10.1111/j.1755-148x.2011.00825.x] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The Dark brown (DB) mutation in chickens reduces expression of black eumelanin and enhances expression of red pheomelanin, but only in certain parts of the plumage. Here, we present genetic evidence that an 8.3-kb deletion upstream of the SOX10 transcription start site is the causal mutation underlying the DB phenotype. The SOX10 transcription factor has a well-established role in melanocyte biology and is essential for melanocyte migration and survival. Previous studies have demonstrated that the mouse homolog of a highly conserved element within the deleted region is a SOX10 enhancer. The mechanism of action of this mutation remains to be established, but one possible scenario is that the deletion leads to reduced SOX10 expression which in turn down-regulates expression of key enzymes in pigment synthesis such as tyrosinase. Lower tyrosinase activity leads to a shift toward a more pheomelanistic (reddish) plumage color, which is the characteristic feature of the DB phenotype.
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Affiliation(s)
- Ulrika Gunnarsson
- Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
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Decoding melanoma metastasis. Cancers (Basel) 2010; 3:126-63. [PMID: 24212610 PMCID: PMC3756353 DOI: 10.3390/cancers3010126] [Citation(s) in RCA: 118] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 12/22/2010] [Accepted: 12/23/2010] [Indexed: 12/18/2022] Open
Abstract
Metastasis accounts for the vast majority of morbidity and mortality associated with melanoma. Evidence suggests melanoma has a predilection for metastasis to particular organs. Experimental analyses have begun to shed light on the mechanisms regulating melanoma metastasis and organ specificity, but these analyses are complicated by observations of metastatic dormancy and dissemination of melanocytes that are not yet fully malignant. Additionally, tumor extrinsic factors in the microenvironment, both at the site of the primary tumor and the site of metastasis, play important roles in mediating the metastatic process. As metastasis research moves forward, paradigms explaining melanoma metastasis as a step-wise process must also reflect the temporal complexity and heterogeneity in progression of this disease. Genetic drivers of melanoma as well as extrinsic regulators of disease spread, particularly those that mediate metastasis to specific organs, must also be incorporated into newer models of melanoma metastasis.
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