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Walter Jackson Iii, Yang Y, Salman S, Dordai D, Lyu Y, Datan E, Drehmer D, Huang TYT, Hwang Y, Semenza GL. Pharmacologic HIF stabilization activates costimulatory receptor expression to increase antitumor efficacy of adoptive T cell therapy. SCIENCE ADVANCES 2024; 10:eadq2366. [PMID: 39196939 DOI: 10.1126/sciadv.adq2366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Accepted: 07/23/2024] [Indexed: 08/30/2024]
Abstract
Adoptive cell transfer (ACT) is a therapeutic strategy to augment antitumor immunity. Here, we report that ex vivo treatment of mouse CD8+ T cells with dimethyloxalylglycine (DMOG), a stabilizer of hypoxia-inducible factors (HIFs), induced HIF binding to the genes encoding the costimulatory receptors CD81, GITR, OX40, and 4-1BB, leading to increased expression. DMOG treatment increased T cell killing of melanoma cells, which was further augmented by agonist antibodies targeting each costimulatory receptor. In tumor-bearing mice, ACT using T cells treated ex vivo with DMOG and agonist antibodies resulted in decreased tumor growth compared to ACT using control T cells and increased intratumoral markers of CD8+ T cells (CD7, CD8A, and CD8B1), natural killer cells (NCR1 and KLRK1), and cytolytic activity (perforin-1 and tumor necrosis factor-α). Costimulatory receptor gene expression was also induced when CD8+ T cells were treated with three highly selective HIF stabilizers that are currently in clinical use.
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MESH Headings
- Animals
- Mice
- Immunotherapy, Adoptive/methods
- CD8-Positive T-Lymphocytes/immunology
- CD8-Positive T-Lymphocytes/metabolism
- CD8-Positive T-Lymphocytes/drug effects
- Amino Acids, Dicarboxylic/pharmacology
- Cell Line, Tumor
- Receptors, OX40/metabolism
- Glucocorticoid-Induced TNFR-Related Protein/metabolism
- Tumor Necrosis Factor Receptor Superfamily, Member 9/metabolism
- Mice, Inbred C57BL
- Melanoma, Experimental/therapy
- Melanoma, Experimental/immunology
- Hypoxia-Inducible Factor 1, alpha Subunit/metabolism
- Hypoxia-Inducible Factor 1, alpha Subunit/genetics
- Cytotoxicity, Immunologic/drug effects
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Affiliation(s)
- Walter Jackson Iii
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Yongkang Yang
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD 21205, USA
| | - Shaima Salman
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Dominic Dordai
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Yajing Lyu
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Emmanuel Datan
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Daiana Drehmer
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Tina Yi-Ting Huang
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Yousang Hwang
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Gregg L Semenza
- Armstrong Oxygen Biology Research Center and Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Department of Genetic Medicine, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
- Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins, Baltimore, MD 21205, USA
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2
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Zhang M, Xu X, Chen Y, Wei C, Zhan S, Cao J, Guo J, Dai D, Wang L, Zhong T, Zhang H, Li L. Transcriptomic and Metabolomic Analyses Reveal Molecular Regulatory Networks for Pigmentation Deposition in Sheep. Int J Mol Sci 2024; 25:8248. [PMID: 39125816 PMCID: PMC11311981 DOI: 10.3390/ijms25158248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2024] [Revised: 07/19/2024] [Accepted: 07/23/2024] [Indexed: 08/12/2024] Open
Abstract
Domestic animals have multiple phenotypes of skin and coat color, which arise from different genes and their products, such as proteins and metabolites responsible with melanin deposition. However, the complex regulatory network of melanin synthesis remains to be fully unraveled. Here, the skin and tongue tissues of Liangshan black sheep (black group) and Liangshan semi-fine-wool sheep (pink group) were collected, stained with hematoxylin-eosin (HE) and Masson-Fontana, and the transcriptomic and metabolomic data were further analyzed. We found a large deposit of melanin granules in the epidermis of the black skin and tongue. Transcriptome and metabolome analysis identified 744 differentially expressed genes (DEGs) and 443 differentially expressed metabolites (DEMs) between the pink and black groups. Gene ontology (GO) and Kyoto encyclopedia of genes and genomes (KEGG) enrichment analyses revealed the DEGs and DEMs were mainly enriched in the pathways of secondary metabolic processes, melanin biosynthesis processes, melanin metabolism processes, melanosome membranes, pigment granule membranes, melanosome, tyrosine metabolism, and melanogenesis. Notably, we revealed the gene ENSARG00020006042 may be a family member of YWHAs and involved in regulating melanin deposition. Furthermore, several essential genes (TYR, TYRP1, DCT, PMEL, MLANA, SLC45A2) were significantly associated with metabolite prostaglandins and compounds involved in sheep pigmentation. These findings provide new evidence of the strong correlation between prostaglandins and related compounds and key genes that regulate sheep melanin synthesis, furthering our understanding of the regulatory mechanisms and molecular breeding of pigmentation in sheep.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Hongping Zhang
- Farm Animal Genetic Resources Exploration Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, China
| | - Li Li
- Farm Animal Genetic Resources Exploration Innovation Key Laboratory of Sichuan Province, College of Animal Science and Technology, Sichuan Agricultural University, Chengdu 611130, 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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4
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Stapleton JL, Manne SL, Pagoto SL, Leip A, Greene K, Hillhouse JJ, Merritt AS, Shelton BJ. A Social Media-Delivered Melanoma Prevention Program for Young Women Engaged in Frequent UV Tanning: Protocol for a Randomized Controlled Trial. JMIR Res Protoc 2024; 13:e56562. [PMID: 38502173 PMCID: PMC10988380 DOI: 10.2196/56562] [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: 02/07/2024] [Revised: 02/08/2024] [Accepted: 02/09/2024] [Indexed: 03/20/2024] Open
Abstract
BACKGROUND Rates of melanoma have increased dramatically in the United States over the past 25 years, and it has become among the most prevalent cancers for young adult women. Intentional skin tanning leads to a pattern of intense and intermittent UV radiation exposure that is associated with increased risk of melanoma. Frequent tanning is most common among young women and is linked to a variety of sociocultural pressures that negatively impact body image and drive appearance control behaviors. Unfortunately, there are no established interventions designed for frequent tanners. This intervention addresses this gap with unique content informed by body image and acceptance-based interventions. The intervention is delivered using Facebook secret groups, an approach designed to support behavior change and ensure scalability. OBJECTIVE This study aims to describe the rationale and methodology of a randomized controlled trial of a melanoma prevention program targeting young women engaged in frequent indoor or outdoor UV tanning. METHODS Participants are women aged 18-25 years who report high-risk tanning (ie, at least 10 indoor tanning sessions in the past 12 months or 10 outdoor sessions in the previous summer). After recruitment and screening, participants completed a baseline survey and were randomly assigned to receive the intervention or an attention-matched control condition. Both conditions were 8-week-long Facebook groups (approximately 25 members each) with daily posting of content. Follow-up surveys are administered at 3, 8, and 18 months after baseline. The primary trial outcome is the combined number of indoor and outdoor tanning sessions reported at the 8-month follow-up. Hypothesized intervention mediators are assessed at the 3-month follow-up. RESULTS This project was funded by a National Cancer Institute award (R01 CA218068), and the trial procedures were approved by the University of Kentucky Institutional Review Board in February 2020. Trial recruitment and enrollment occurred in 6 waves of data collection, which started in February 2022 and closed in May 2023. The study is closed to enrollment but remains open for follow-ups, and this protocol report was prepared before data analyses. As of February 2024, all participants have completed the 8-month follow-up assessment, and data collection is scheduled to close by the end of 2024 after the collection of the 18-month follow-up. CONCLUSIONS This trial will contribute unique knowledge to the field of skin cancer prevention, as no fully powered trials have examined the efficacy of an intervention designed for frequent indoor or outdoor tanning. The trial may also contribute evidence of the value in translating principles of body image and acceptance-based interventions into the field of skin cancer prevention and beyond. If successful, the use of the Facebook platform is intended to aid in dissemination as it provides a way to embed the intervention into individuals' everyday routines. TRIAL REGISTRATION ClinicalTrials.gov NCT03441321; https://clinicaltrials.gov/study/NCT03441321. INTERNATIONAL REGISTERED REPORT IDENTIFIER (IRRID) DERR1-10.2196/56562.
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Affiliation(s)
- Jerod L Stapleton
- Markey Cancer Center, College of Public Health, University of Kentucky, Lexington, KY, United States
| | - Sharon L Manne
- Rutgers Cancer Institute of New Jersey, Rutgers Robert Wood Johnson Medical School, Rutgers, The State University of New Jersey, New Brunswick, NJ, United States
| | - Sherry L Pagoto
- Institute for Collaboration on Health, Intervention and Policy, University of Connecticut, Storrs, CT, United States
| | - Allison Leip
- Department of Family Sciences, University of Kentucky, Lexington, KY, United States
| | - Kathryn Greene
- Department of Communication, Rutgers, The State University of New Jersey, New Brunswick, NJ, United States
| | - Joel J Hillhouse
- Department of Community and Behavioral Health, East Tennessee State University, Johnson City, TN, United States
| | - Allison S Merritt
- Markey Cancer Center, College of Public Health, University of Kentucky, Lexington, KY, United States
| | - Brent J Shelton
- Markey Cancer Center, College of Medicine, University of Kentucky, Lexington, KY, United States
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5
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Carney BC, Travis TE, Moffatt LT, Johnson LS, McLawhorn MM, Simbulan-Rosenthal CM, Rosenthal DS, Shupp JW. Hypopigmented burn hypertrophic scar contains melanocytes that can be signaled to re-pigment by synthetic alpha-melanocyte stimulating hormone in vitro. PLoS One 2021; 16:e0248985. [PMID: 33765043 PMCID: PMC7993611 DOI: 10.1371/journal.pone.0248985] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2020] [Accepted: 03/09/2021] [Indexed: 02/03/2023] Open
Abstract
There are limited treatments for dyschromia in burn hypertrophic scars (HTSs). Initial work in Duroc pig models showed that regions of scar that are light or dark have equal numbers of melanocytes. This study aims to confirm melanocyte presence in regions of hypo- and hyper-pigmentation in an animal model and patient samples. In a Duroc pig model, melanocyte presence was confirmed using en face staining. Patients with dyschromic HTSs had demographic, injury details, and melanin indices collected. Punch biopsies were taken of regions of hyper-, hypo-, or normally pigmented scar and skin. Biopsies were processed to obtain epidermal sheets (ESs). A subset of ESs were en face stained with melanocyte marker, S100β. Melanocytes were isolated from a different subset. Melanocytes were treated with NDP α-MSH, a pigmentation stimulator. mRNA was isolated from cells, and was used to evaluate gene expression of melanin-synthetic genes. In patient and pig scars, regions of hyper-, hypo-, and normal pigmentation had significantly different melanin indices. S100β en face staining showed that regions of hyper- and hypo-pigmentation contained the same number of melanocytes, but these cells had different dendricity/activity. Treatment of hypo-pigmented melanocytes with NDP α-MSH produced melanin by microscopy. Melanin-synthetic genes were upregulated in treated cells over controls. While traditionally it may be thought that hypopigmented regions of burn HTS display this phenotype because of the absence of pigment-producing cells, these data show that inactive melanocytes are present in these scar regions. By treating with a pigment stimulator, cells can be induced to re-pigment.
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Affiliation(s)
- Bonnie C. Carney
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, United States of America
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, United States of America
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, United States of America
| | - Taryn E. Travis
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, United States of America
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, United States of America
- Department of Surgery, The Burn Center, MedStar Washington Hospital Center, Washington, DC, United States of America
| | - Lauren T. Moffatt
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, United States of America
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, United States of America
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, United States of America
| | - Laura S. Johnson
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, United States of America
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, United States of America
- Department of Surgery, The Burn Center, MedStar Washington Hospital Center, Washington, DC, United States of America
| | - Melissa M. McLawhorn
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, United States of America
| | - Cynthia M. Simbulan-Rosenthal
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, United States of America
| | - Dean S. Rosenthal
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, United States of America
| | - Jeffrey W. Shupp
- Department of Biochemistry and Molecular and Cellular Biology, Georgetown University School of Medicine, Washington, DC, United States of America
- Firefighters’ Burn and Surgical Research Laboratory, MedStar Health Research Institute, Washington, DC, United States of America
- Department of Surgery, Georgetown University School of Medicine, Washington, DC, United States of America
- Department of Surgery, The Burn Center, MedStar Washington Hospital Center, Washington, DC, United States of America
- * E-mail:
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6
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Abstract
In this article, we summarize the research that eventually led to the classification of the full ultraviolet (UV) radiation spectrum as carcinogenic to humans. We recall the pioneering works that led to the formulation of novel hypotheses on the reasons underlying the increasing burden of melanoma in light-skinned populations. It took long before having compelling evidence on the association between UV and melanoma, in particular, the importance of UV exposure during childhood for both the occurrence of melanoma and death. The role of UVA was established only after 2005. If molecular lesions caused by UV radiation are better known, the precise mechanism by which UV exposure drives melanoma occurrence and progression still needs to be elucidated. More research on the UV-melanoma relationships has led to more evidence-based sun-protection recommendations, especially for children, and to effective control of the artificial UV tanning fashion. Since around 1985-1995, the mortality because of melanoma has started to decrease in younger age groups in most light-skinned populations. If sun protection among children remain on top of public health agendas, there is a fairly great chance that melanoma mortality will stabilize and steadily decrease in all light-skinned populations. The introduction of effective therapies against metastatic disease will improve this reversal in mortality trends.
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Affiliation(s)
- Philippe Autier
- University of Strathclyde Institute of Global Public Health, International Prevention Research Institute (iPRI), Dardilly, France
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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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Sample A, He YY. Mechanisms and prevention of UV-induced melanoma. PHOTODERMATOLOGY, PHOTOIMMUNOLOGY & PHOTOMEDICINE 2018; 34:13-24. [PMID: 28703311 PMCID: PMC5760354 DOI: 10.1111/phpp.12329] [Citation(s) in RCA: 193] [Impact Index Per Article: 32.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 07/06/2017] [Indexed: 02/06/2023]
Abstract
Melanoma is the deadliest form of skin cancer and its incidence is rising, creating a costly and significant clinical problem. Exposure to ultraviolet (UV) radiation, namely UVA (315-400 nm) and UVB (280-315 nm), is a major risk factor for melanoma development. Cumulative UV radiation exposure from sunlight or tanning beds contributes to UV-induced DNA damage, oxidative stress, and inflammation in the skin. A number of factors, including hair color, skin type, genetic background, location, and history of tanning, determine the skin's response to UV radiation. In melanocytes, dysregulation of this UV radiation response can lead to melanoma. Given the complex origins of melanoma, it is difficult to develop curative therapies and universally effective preventative strategies. Here, we describe and discuss the mechanisms of UV-induced skin damage responsible for inducing melanomagenesis, and explore options for therapeutic and preventative interventions.
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Affiliation(s)
- Ashley Sample
- Department of Medicine, Section of Dermatology, University of Chicago, Chicago, IL
- Committee on Cancer Biology, University of Chicago, Chicago, IL
| | - Yu-Ying He
- Department of Medicine, Section of Dermatology, University of Chicago, Chicago, IL
- Committee on Cancer Biology, University of Chicago, Chicago, IL
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9
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de Freitas MM, Fontes PR, Souza PM, William Fagg C, Neves Silva Guerra E, de Medeiros Nóbrega YK, Silveira D, Fonseca-Bazzo Y, Simeoni LA, Homem-de-Mello M, Oliveira Magalhães P. Extracts of Morus nigra L. Leaves Standardized in Chlorogenic Acid, Rutin and Isoquercitrin: Tyrosinase Inhibition and Cytotoxicity. PLoS One 2016; 11:e0163130. [PMID: 27655047 PMCID: PMC5031429 DOI: 10.1371/journal.pone.0163130] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2016] [Accepted: 09/03/2016] [Indexed: 11/19/2022] Open
Abstract
Melanogenesis is a process responsible for melanin production, which is stored in melanocytes containing tyrosinase. Inhibition of this enzyme is a target in the cosmetics industry, since it controls undesirable skin conditions such as hyperpigmentation due to the overproduction of melanin. Species of the Morus genus are known for the beneficial uses offered in different parts of its plants, including tyrosinase inhibition. Thus, this project aimed to study the inhibitory activity of tyrosinase by extracts from Morus nigra leaves as well as the characterization of its chromatographic profile and cytotoxicity in order to become a new therapeutic option from a natural source. M. nigra leaves were collected, pulverized, equally divided into five batches and the standardized extract was obtained by passive maceration. There was no significant difference between batches for total solids content, yield and moisture content, which shows good reproducibility of the extraction process. Tyrosinase enzymatic activity was determined for each batch, providing the percentage of enzyme inhibition and IC50 values obtained by constructing dose-response curves and compared to kojic acid, a well-known tyrosinase inhibitor. High inhibition of tyrosinase activity was observed (above 90% at 15.625 μg/mL). The obtained IC50 values ranged from 5.00 μg/mL ± 0.23 to 8.49 μg/mL ± 0.59 and were compared to kojic acid (3.37 μg/mL ± 0.65). High Performance Liquid Chromatography analysis revealed the presence of chlorogenic acid, rutin and, its major compound, isoquercitrin. The chromatographic method employed was validated according to ICH guidelines and the extract was standardized using these polyphenols as markers. Cytotoxicity, assessed by MTT assay, was not observed on murine melanomas, human keratinocytes and mouse fibroblasts in tyrosinase IC50 values. This study demonstrated the potential of M. nigra leaf extract as a promising whitening agent of natural source against skin hyperpigmentation.
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Affiliation(s)
- Marcela Medeiros de Freitas
- Department of Pharmacy, Health Sciences School, University of Brasília, Brasília, Distrito Federal, Brazil
- * E-mail:
| | - Pedro Ribeiro Fontes
- Department of Pharmacy, Health Sciences School, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Paula Monteiro Souza
- Department of Pharmacy, Health Sciences School, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Christopher William Fagg
- Department of Botany, Institute of Biological Science, School of Pharmacy, Ceilândia Campus, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Eliete Neves Silva Guerra
- Department of Odontology, Health Sciences School, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Yanna Karla de Medeiros Nóbrega
- Immunogenetic and Chronic-degenerative Diseases Laboratory, School of Medicine, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Damaris Silveira
- Department of Pharmacy, Health Sciences School, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Yris Fonseca-Bazzo
- Department of Pharmacy, Health Sciences School, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Luiz Alberto Simeoni
- Department of Pharmacy, Health Sciences School, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Maurício Homem-de-Mello
- Department of Pharmacy, Health Sciences School, University of Brasília, Brasília, Distrito Federal, Brazil
| | - Pérola Oliveira Magalhães
- Department of Pharmacy, Health Sciences School, University of Brasília, Brasília, Distrito Federal, Brazil
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10
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Hasegawa K, Fujiwara R, Sato K, Shin J, Kim SJ, Kim M, Kang HY. Possible Involvement of Keratinocyte Growth Factor in the Persistence of Hyperpigmentation in both Human Facial Solar Lentigines and Melasma. Ann Dermatol 2015; 27:626-9. [PMID: 26512185 PMCID: PMC4622905 DOI: 10.5021/ad.2015.27.5.626] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Revised: 11/25/2014] [Accepted: 12/04/2014] [Indexed: 11/28/2022] Open
Affiliation(s)
| | | | | | - Jaeyoung Shin
- Department of Dermatology, Graduate School of Ajou University, Ajou University School of Medicine, Suwon, Korea
| | - Sang Jin Kim
- Department of Dermatology, Graduate School of Ajou University, Ajou University School of Medicine, Suwon, Korea
| | - Misun Kim
- Department of Dermatology, Graduate School of Ajou University, Ajou University School of Medicine, Suwon, Korea. ; Department of Biomedical Science, Graduate School of Ajou University, Ajou University School of Medicine, Suwon, Korea. ; Chronic Inflammatory Disease Research Center, Ajou University School of Medicine, Suwon, Korea
| | - Hee Young Kang
- Department of Dermatology, Graduate School of Ajou University, Ajou University School of Medicine, Suwon, Korea. ; Department of Biomedical Science, Graduate School of Ajou University, Ajou University School of Medicine, Suwon, Korea. ; Chronic Inflammatory Disease Research Center, Ajou University School of Medicine, Suwon, Korea
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11
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Gilaberte Y, Carrascosa J. Realidades y retos de la fotoprotección en la infancia. ACTAS DERMO-SIFILIOGRAFICAS 2014. [DOI: 10.1016/j.ad.2013.05.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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Gilaberte Y, Carrascosa J. Sun Protection in Children: Realities and Challenges. ACTA ACUST UNITED AC 2014; 105:253-62. [DOI: 10.1016/j.adengl.2013.05.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2013] [Accepted: 05/12/2013] [Indexed: 12/18/2022]
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Direct migration of follicular melanocyte stem cells to the epidermis after wounding or UVB irradiation is dependent on Mc1r signaling. Nat Med 2013; 19:924-9. [PMID: 23749232 DOI: 10.1038/nm.3194] [Citation(s) in RCA: 132] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2012] [Accepted: 04/11/2013] [Indexed: 12/14/2022]
Abstract
During wound healing, stem cells provide functional mature cells to meet acute demands for tissue regeneration. Simultaneously, the tissue must maintain a pool of stem cells to sustain its future regeneration capability. However, how these requirements are balanced in response to injury is unknown. Here we demonstrate that after wounding or ultraviolet type B irradiation, melanocyte stem cells (McSCs) in the hair follicle exit the stem cell niche before their initial cell division, potentially depleting the pool of these cells. We also found that McSCs migrate to the epidermis in a melanocortin 1 receptor (Mc1r)-dependent manner and differentiate into functional epidermal melanocytes, providing a pigmented protective barrier against ultraviolet irradiation over the damaged skin. These findings provide an example in which stem cell differentiation due to injury takes precedence over stem cell maintenance and show the potential for developing therapies for skin pigmentation disorders by manipulating McSCs.
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Restifo NP, Dudley ME, Rosenberg SA. Adoptive immunotherapy for cancer: harnessing the T cell response. Nat Rev Immunol 2012; 12:269-81. [PMID: 22437939 PMCID: PMC6292222 DOI: 10.1038/nri3191] [Citation(s) in RCA: 1182] [Impact Index Per Article: 98.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Immunotherapy based on the adoptive transfer of naturally occurring or gene-engineered T cells can mediate tumour regression in patients with metastatic cancer. Here, we discuss progress in the use of adoptively transferred T cells, focusing on how they can mediate tumour cell eradication. Recent advances include more accurate targeting of antigens expressed by tumours and the associated vasculature, and the successful use of gene engineering to re-target T cells before their transfer into the patient. We also describe how new research has helped to identify the particular T cell subsets that can most effectively promote tumour eradication.
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Affiliation(s)
- Nicholas P Restifo
- Surgery Branch, National Cancer Institute, National Institutes of Health, Bethesda, Maryland 20892, USA.
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