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Kurtović M, Piteša N, Čonkaš J, Hajpek H, Vučić M, Musani V, Ozretić P, Sabol M. GLI Transcriptional Targets S100A7 and KRT16 Show Upregulated Expression Patterns in Epidermis Overlying the Tumor Mass in Melanoma Samples. Int J Mol Sci 2024; 25:6084. [PMID: 38892279 PMCID: PMC11172526 DOI: 10.3390/ijms25116084] [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: 04/26/2024] [Revised: 05/27/2024] [Accepted: 05/28/2024] [Indexed: 06/01/2024] Open
Abstract
Although not completely understood, the role of the Hedgehog-GLI (HH-GLI) signaling pathway in melanoma and epithelial skin tumors has been reported before. In this study, we confirmed in various melanoma cell line models that keratin 16 (KRT16) and S100 Calcium-Binding Protein A7 (S100A7) are transcriptional targets of GLI Family Zinc Finger (GLI) proteins. Besides their important role in protecting and maintaining the epidermal barrier, keratins are somehow tightly connected with the S100 family of proteins. We found that stronger expression of KRT16 indeed corresponds to stronger expression of S100A7 in our clinical melanoma samples. We also report a trend regarding staining of GLI1, which corresponds to stronger staining of GLI3, KRT16, and S100A7 proteins. The most interesting of our findings is that all the proteins are detected specifically in the epidermis overlying the tumor, but rarely in the tumor itself. The examined proteins were also not detected in the healthy epidermis at the edges of the sample, suggesting that the staining is specific to the epidermis overlaying the tumor mass. Of all proteins, only S100A7 demonstrated a statistically significant trend regarding tumor staging and staining intensity. Results from our clinical samples prove that immune infiltration is an important feature of melanoma. Pigmentophages and tumor-infiltrating lymphocytes (TIL) demonstrate a significant association with tumor stage, while mononuclear cells are equally present in all stages. For S100A7, we found an association between the number of TILs and staining intensity. Considering these new findings presented in our study, we suggest a more detailed examination of the possible role of the S100A7 protein as a biomarker in melanoma.
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Affiliation(s)
- Matea Kurtović
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia; (M.K.); (N.P.); (J.Č.); (H.H.); (V.M.); (P.O.)
| | - Nikolina Piteša
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia; (M.K.); (N.P.); (J.Č.); (H.H.); (V.M.); (P.O.)
| | - Josipa Čonkaš
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia; (M.K.); (N.P.); (J.Č.); (H.H.); (V.M.); (P.O.)
| | - Helena Hajpek
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia; (M.K.); (N.P.); (J.Č.); (H.H.); (V.M.); (P.O.)
- Department of Biology, Faculty of Science, University of Zagreb, Horvatovac 102a, 10000 Zagreb, Croatia
| | - Majda Vučić
- Ljudevit Jurak Clinical Department of Pathology and Cytology, Sestre Milosrdnice University Hospital Center, 10000 Zagreb, Croatia;
- Department of Pathology, School of Dental Medicine, University of Zagreb, 10000 Zagreb, Croatia
| | - Vesna Musani
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia; (M.K.); (N.P.); (J.Č.); (H.H.); (V.M.); (P.O.)
| | - Petar Ozretić
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia; (M.K.); (N.P.); (J.Č.); (H.H.); (V.M.); (P.O.)
| | - Maja Sabol
- Division of Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, 10000 Zagreb, Croatia; (M.K.); (N.P.); (J.Č.); (H.H.); (V.M.); (P.O.)
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Karisola P, Nikkola V, Joronen H, Ylianttila L, Grönroos M, Partonen T, Snellman E, Alenius H. Narrow-band UVB radiation triggers diverse changes in the gene expression and induces the accumulation of M1 macrophages in human skin. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY. B, BIOLOGY 2024; 253:112887. [PMID: 38460430 DOI: 10.1016/j.jphotobiol.2024.112887] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Revised: 02/22/2024] [Accepted: 03/05/2024] [Indexed: 03/11/2024]
Abstract
BACKGROUND The underlying molecular mechanisms that determine the biological effects of UVB radiation exposure on human skin are still only partially comprehended. OBJECTIVES Our goal is to examine the human skin transcriptome and related molecular mechanisms following a single exposure to UVB in the morning versus evening. METHODS We exposed 20 volunteer females to four-fold standard erythema doses (SED4) of narrow-band UVB (309-313 nm) in the morning or evening and studied skin transcriptome 24 h after the exposure. We performed enrichment analyses of gene pathways, predicted changes in skin cell composition using cellular deconvolution, and correlated cell proportions with gene expression. RESULTS In the skin transcriptome, UVB exposure yielded 1384 differentially expressed genes (DEGs) in the morning and 1295 DEGs in the evening, of which the most statistically significant DEGs enhanced proteasome and spliceosome pathways. Unexposed control samples showed difference by 321 DEGs in the morning vs evening, which was related to differences in genes associated with the circadian rhythm. After the UVB exposure, the fraction of proinflammatory M1 macrophages was significantly increased at both timepoints, and this increase was positively correlated with pathways on Myc targets and mTORC1 signaling. In the evening, the skin clinical erythema was more severe and had stronger positive correlation with the number of M1 macrophages than in the morning after UVB exposure. The fractions of myeloid and plasmacytoid dendritic cells and CD8 T cells were significantly decreased in the morning but not in the evening. CONCLUSIONS NB-UVB-exposure causes changes in skin transcriptome, inhibiting cell division, and promoting proteasome activity and repair responses, both in the morning and in the evening. Inflammatory M1 macrophages may drive the UV-induced skin responses by exacerbating inflammation and erythema. These findings highlight how the same UVB exposure influences skin responses differently in morning versus evening and presents a possible explanation to the differences in gene expression in the skin after UVB irradiation at these two timepoints.
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Affiliation(s)
- Piia Karisola
- Faculty of Medicine, Human Microbiome Research Program, University of Helsinki, Finland.
| | - Veera Nikkola
- Tampere University, Faculty of Medicine and Health Technology, Department of Dermatology and Venereology, Tampere, Finland
| | - Heli Joronen
- Tampere University, Faculty of Medicine and Health Technology, Department of Dermatology and Venereology, Tampere, Finland; Päijät-Häme Social and Health Care Group, Department of Dermatology and Allergology, Lahti, Finland.
| | - Lasse Ylianttila
- Radiation and Nuclear Safety Authority (STUK), Helsinki, Finland.
| | - Mari Grönroos
- Päijät-Häme Social and Health Care Group, Department of Dermatology and Allergology, Lahti, Finland.
| | - Timo Partonen
- Finnish Institute for Health and Welfare, Department of Public Health and Welfare, Finland.
| | - Erna Snellman
- Tampere University, Faculty of Medicine and Health Technology, Department of Dermatology and Venereology, Tampere, Finland.
| | - Harri Alenius
- Faculty of Medicine, Human Microbiome Research Program, University of Helsinki, Finland; Institute of Environmental Medicine, Karolinska Institute, Stockholm, Sweden.
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Zang L, Shimada Y, Miyake H, Nishimura N. Transcriptome analysis of molecular response to UVC irradiation in zebrafish embryos. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2022; 231:113211. [PMID: 35051758 DOI: 10.1016/j.ecoenv.2022.113211] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/12/2022] [Accepted: 01/14/2022] [Indexed: 06/14/2023]
Abstract
Ultraviolet (UV) rays can be both harmful and beneficial to humans. This study aimed to investigate the toxicity and safety of ultraviolet C (UVC) exposure in living organisms and the corresponding biodefense molecular mechanisms. Zebrafish embryos, at an early developmental stage (5-6 h post-fertilization), were irradiated with increasing UVC dosages using high-efficiency deep-ultraviolet light-emitting diodes (278 nm). Morphological phenotypes including survival rate, hatching rate, heart rate, and malformation rate were evaluated. Compared to un-irradiated controls, all zebrafish embryos exposed to 4.5 mJ/cm2 UVC survived and showed no significant difference in hatching and heart rate. However, 7.5 mJ/cm2 of UVC irradiation caused a significantly decreased survival rate (37.5%) and an increased malformation rate (81.8%). Therefore, 4.5 mJ/cm2 was chosen as the limit dosage that the internal biodefense system of zebrafish embryos can protect against UVC radiation. Transcriptome analysis (RNA sequencing) performed on 3 min and 3 days post-irradiation embryos (4.5 mJ/cm2) revealed the molecular mechanisms underlying the response of zebrafish embryos to irradiation. The embryos quickly responded to UVC-induced stress by activating the p53 signaling pathway. In addition, after 3 days of recuperation, the embryos showed activation of signal transducer and activator of transcription (STAT) signaling pathway. To our knowledge, this is the first study to evaluate the toxicological effects and the molecular mechanism of biodefense in zebrafish embryos upon 278 nm UVC irradiation.
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Affiliation(s)
- Liqing Zang
- Graduate School of Regional Innovation Studies, Mie University, Tsu, Mie 514-8507, Japan; Mie University Zebrafish Drug Screening Center, Tsu, Mie 514-8507, Japan.
| | - Yasuhito Shimada
- Mie University Zebrafish Drug Screening Center, Tsu, Mie 514-8507, Japan; Department of Integrative Pharmacology, Mie University Graduate School of Medicine, Tsu, Mie 514-8507, Japan; Department of Bioinformatics, Mie University Advanced Science Research Promotion Center, Tsu, Mie 514-8507, Japan
| | - Hideto Miyake
- Graduate School of Regional Innovation Studies, Mie University, Tsu, Mie 514-8507, Japan; Graduate School of Engineering, Mie University, Tsu, Mie 514-8507, Japan
| | - Norihiro Nishimura
- Graduate School of Regional Innovation Studies, Mie University, Tsu, Mie 514-8507, Japan; Mie University Zebrafish Drug Screening Center, Tsu, Mie 514-8507, Japan
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Yang K, Song S, Zhang Y, Shen S, Xu X, Yue Z. Programmed gene expression change in mouse skin after ultraviolet radiation damage. Exp Dermatol 2021; 31:862-868. [PMID: 34951733 DOI: 10.1111/exd.14519] [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: 08/20/2021] [Revised: 11/24/2021] [Accepted: 12/21/2021] [Indexed: 11/29/2022]
Abstract
Ultraviolet (UV) radiation is a major cause of skin damage and carcinogenesis. Here, we systematically analyse the acute gene expression change in skin in vivo after UV exposure, aiming to establish the common C57BL/6 mouse strain as a convenient model for future pathological research and drug discovery. The back fur of C57BL/6 mice was depilated, and a mixed UV light source was used to irradiate the skin. Full-thickness skin samples were collected at 0, 0.5, 2, 6, 12 and 24 h. Total RNAs were extracted and subjected to RNA sequencing analysis. We found that the gene expression change in mouse skin is highly similar to previous reports in human skin. These include down-regulation of differentiation-related genes and extracellular matrix genes, and up-regulation of cytokine/chemokine genes. An early wave of activator protein 1 (AP-1) expression is induced, whereas activation of the p53 pathway is not significant. The impact of the AP-1 transcription factors and the antioxidant tea polyphenols is discussed. The analysis of acute gene expression change in skin after UV irradiation provides a starting point to investigate how the skin responds to genotoxic stress.
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Affiliation(s)
- Kaibin Yang
- Guangdong Key Laboratory for Genome Stability and Disease Prevention, Carson International Cancer Center, Department of Cell Biology and Medical Genetics, Shenzhen University School of Medicine, Shenzhen, China
| | - Shiting Song
- Guangdong Key Laboratory for Genome Stability and Disease Prevention, Carson International Cancer Center, Department of Cell Biology and Medical Genetics, Shenzhen University School of Medicine, Shenzhen, China
| | - Yafei Zhang
- Guangdong Key Laboratory for Genome Stability and Disease Prevention, Carson International Cancer Center, Department of Cell Biology and Medical Genetics, Shenzhen University School of Medicine, Shenzhen, China
| | - Siting Shen
- Guangdong Key Laboratory for Genome Stability and Disease Prevention, Carson International Cancer Center, Department of Cell Biology and Medical Genetics, Shenzhen University School of Medicine, Shenzhen, China
| | - Xingzhi Xu
- Guangdong Key Laboratory for Genome Stability and Disease Prevention, Carson International Cancer Center, Department of Cell Biology and Medical Genetics, Shenzhen University School of Medicine, Shenzhen, China
| | - Zhicao Yue
- Guangdong Key Laboratory for Genome Stability and Disease Prevention, Carson International Cancer Center, Department of Cell Biology and Medical Genetics, Shenzhen University School of Medicine, Shenzhen, China
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Vats K, Kruglov O, Mizes A, Samovich SN, Amoscato AA, Tyurin VA, Tyurina YY, Kagan VE, Bunimovich YL. Keratinocyte death by ferroptosis initiates skin inflammation after UVB exposure. Redox Biol 2021; 47:102143. [PMID: 34592565 PMCID: PMC8487085 DOI: 10.1016/j.redox.2021.102143] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2021] [Revised: 09/09/2021] [Accepted: 09/18/2021] [Indexed: 02/09/2023] Open
Abstract
The ultraviolet B radiation (UVB) causes skin inflammation, which contributes to the causality and the exacerbation of a number of cutaneous diseases. However, the mechanism of UVB-driven inflammation in the skin remains poorly understood. We show that ferroptosis, a non-apoptotic programmed cell death pathway that is promoted by an excessive phospholipid peroxidation, is activated in the epidermal keratinocytes after their exposure to UVB. The susceptibility of the keratinocytes to UVB-induced ferroptosis depends on the extent of pro-ferroptosis death signal generation and the dysregulation of the glutathione system. Inhibition of ferroptosis prevents the release of HMGB1 from the human epidermal keratinocytes, and blocks necroinflammation in the UVB-irradiated mouse skin. We show that while apoptosis and pyroptosis are also detectable in the keratinocytes after UVB exposure, ferroptosis plays a significant role in initiating UVB-induced inflammation in the skin. Our results have important implications for the prevention and the treatment of a broad range of skin diseases which are fostered by UVB-induced inflammation.
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Affiliation(s)
- Kavita Vats
- Department of Dermatology, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Oleg Kruglov
- Department of Dermatology, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Alicia Mizes
- School of Medicine, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Svetlana N Samovich
- Center for Free Radical and Antioxidant Health, Department of Environmental Health and Occupational Health, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Andrew A Amoscato
- Center for Free Radical and Antioxidant Health, Department of Environmental Health and Occupational Health, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Vladimir A Tyurin
- Center for Free Radical and Antioxidant Health, Department of Environmental Health and Occupational Health, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Yulia Y Tyurina
- Center for Free Radical and Antioxidant Health, Department of Environmental Health and Occupational Health, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Valerian E Kagan
- Center for Free Radical and Antioxidant Health, Department of Environmental Health and Occupational Health, University of Pittsburgh, Pittsburgh, PA, 15213, USA
| | - Yuri L Bunimovich
- Department of Dermatology, University of Pittsburgh, Pittsburgh, PA, 15213, USA; Hillman Cancer Institute, University of Pittsburgh Medical Center, Pittsburgh, PA, 15213, USA.
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Hwang SH, Kim JH, Choi E, Park SH, Cho JY. Antioxidative and Skin Protective Effects of Canarium subulatum Methanol Extract on Keratinocytes. EVIDENCE-BASED COMPLEMENTARY AND ALTERNATIVE MEDICINE : ECAM 2021; 2021:6692838. [PMID: 33777162 PMCID: PMC7972861 DOI: 10.1155/2021/6692838] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2020] [Revised: 01/31/2021] [Accepted: 03/02/2021] [Indexed: 12/19/2022]
Abstract
Canarium subulatum is a traditional medical herb used in South Asia. Recently, the anti-inflammatory effects of C. subulatum methanol extract (Cs-ME) have been reported; however, the effect of Cs-ME on skin physiology has not yet been elucidated. Therefore, in this study, we evaluated the protective effect of Cs-ME on UV-induced skin aging and cell death as well as the reinforcing effect on the skin barrier. According to viable cell counting and MTT assays, Cs-ME significantly reduced UV-evoked HaCaT cell death. Cs-ME blocked reactive oxygen species (ROS) generation in UV-irradiated HaCaT cells and showed radical scavenging activity against DPPH and ABTS. In addition, H2O2-induced cell death was inhibited by Cs-ME, indicating that Cs-ME protects cells from UV-derived cell death through the suppression of ROS. PCR analysis revealed that Cs-ME diminished the expression of aging-related HYAL-1 and MMP-1 genes in UV-treated HaCaT cells. Elevated HYAL-1 and MMP-1 mRNA expression in H2O2-stimulated HaCaT cells was also decreased by Cs-ME, suggesting that Cs-ME exerts antiaging activity via the inhibition of ROS. Expression of skin barrier components including filaggrin and hyaluronic acid synthase-1 was increased by Cs-ME and was modulated by ERK/p38-AP-1 signaling. Collectively, our data show that Cs-ME has cytoprotective and antiaging activity based on antioxidant properties. Furthermore, Cs-ME exerts skin barrier protective ability by regulating the AP-1 signaling pathway. Therefore, Cs-ME has the potential for use as an ingredient in cosmetics to protect the skin from UV irradiation, prevent photoaging, and strengthen the skin barrier.
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Affiliation(s)
- So-Hyeon Hwang
- Department of Integrative Biotechnology and Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Ji Hye Kim
- Department of Integrative Biotechnology and Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Eunju Choi
- Department of Integrative Biotechnology and Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Sang Hee Park
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
| | - Jae Youl Cho
- Department of Integrative Biotechnology and Biomedical Institute for Convergence at SKKU (BICS), Sungkyunkwan University, Suwon 16419, Republic of Korea
- Department of Biocosmetics, Sungkyunkwan University, Suwon 16419, Republic of Korea
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Chen RY, Lin CJ, Liang ST, Villalobos O, Villaflores OB, Lou B, Lai YH, Hsiao CD. UVB Irradiation Induced Cell Damage and Early Onset of Junbb Expression in Zebrafish. Animals (Basel) 2020; 10:E1096. [PMID: 32630437 PMCID: PMC7341518 DOI: 10.3390/ani10061096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2020] [Revised: 06/17/2020] [Accepted: 06/18/2020] [Indexed: 12/16/2022] Open
Abstract
Ultraviolet B (UVB) radiation has drawn more attention over these past few decades since it causes severe DNA damage and induces inflammatory response. Serial gene profiling and high throughput data in UVB-associated phenomenon in human cultured cells or full rack of human skin have been investigated. However, results using different tissue models lead to ambiguity in UVB-induced pathways. In order to systematically understand the UVB-associated reactions, the zebrafish model was used, and whole organism gene profiling was performed to identify a novel biomarker which can be used to generate a new mechanistic approach for further screening on a UVB-related system biology. In this study, detailed morphological assays were performed to address biological response after receiving UVB irradiation at morphological, cellular, and molecular levels. Microarray screening and whole genome profiling revealed that there is an early onset expression of junbb in zebrafish embryos after UVB irradiation. Also, the identified novel biomarker junbb is more sensitive to UVB response than mmps which have been used in mouse models. Moreover, cellular and molecular response chronology after UVB irradiation in zebrafish provide a solid and fundamental mechanism for use in a UV radiation-associated study in the future.
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Affiliation(s)
- Rui-Yi Chen
- Key Lab of Mariculture and Enhancement of Zhejiang Province, Marine Fisheries Research Institute of Zhejiang, Zhoushan 316100, China;
- Marine and Fishery Institute, Zhejiang Ocean University, Zhoushan 316100, China
| | - Chun-Ju Lin
- Department of Bioscience Technology, Chung Yuan Christian University, Chung-Li 32023, Taiwan; (C.-J.L.); (S.-T.L.)
| | - Sung-Tzu Liang
- Department of Bioscience Technology, Chung Yuan Christian University, Chung-Li 32023, Taiwan; (C.-J.L.); (S.-T.L.)
| | - Omar Villalobos
- Department of Pharmacy, Faculty of Pharmacy, University of Santo Tomas, Manila 1015, Philippines;
| | - Oliver B. Villaflores
- Department of Biochemistry, Faculty of Pharmacy, University of Santo Tomas, Manila 1013, Philippines;
| | - Bao Lou
- Institute of Hydrobiology, Zhejiang Academy of Agricultural Sciences, Shiqiao Road 198, Hangzhou 310021, China
| | - Yu-Heng Lai
- Department of Chemistry, Chinese Culture University, Taipei 11114, Taiwan
| | - Chung-Der Hsiao
- Department of Bioscience Technology, Chung Yuan Christian University, Chung-Li 32023, Taiwan; (C.-J.L.); (S.-T.L.)
- Department of Chemistry, Chung Yuan Christian University, Chung-Li 32023, Taiwan
- Center for Nanotechnology, Chung Yuan Christian University, Chung-Li 32023, Taiwan
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8
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Dorr MM, Guignard R, Auger FA, Rochette PJ. The use of tissue-engineered skin to demonstrate the negative effect of CXCL5 on epidermal ultraviolet radiation-induced cyclobutane pyrimidine dimer repair efficiency. Br J Dermatol 2020; 184:123-132. [PMID: 32271940 DOI: 10.1111/bjd.19117] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/01/2020] [Indexed: 12/24/2022]
Abstract
BACKGROUND Ultraviolet radiation (UVR) is responsible for keratinocyte cancers through the induction of mutagenic cyclobutane pyrimidine dimers (CPDs). Many factors influence CPD repair in epidermal keratinocytes, and a better understanding of those factors might lead to prevention strategies against skin cancer. OBJECTIVES To evaluate the impact of dermal components on epidermal CPD repair efficiency and to investigate potential factors responsible for the dermal-epidermal crosstalk modulating UVR-induced DNA damage repair in keratinocytes. METHODS A model of self-assembled tissue-engineered skin containing human primary keratinocytes and fibroblasts was used in this study. RESULTS We showed that CPD repair in keratinocytes is positively influenced by the presence of a dermis. We investigated the secretome and found that the cytokine CXCL5 is virtually absent from the culture medium of reconstructed skin, compared with media from fibroblasts and keratinocytes alone. By modulating CXCL5 levels in culture media of keratinocytes, we have shown that CXCL5 is an inhibitor of CPD repair. CONCLUSIONS This work outlines the impact of the secreted dermal components on epidermal UVR-induced DNA damage repair and sheds light on a novel role of CXCL5 in CPD repair.
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Affiliation(s)
- M M Dorr
- Centre de Recherche du CHU de Québec - Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement, Québec, QC, Canada.,Centre de Recherche en Organogénèse Expérimentale de l'Université Laval - LOEX, Québec, QC, Canada
| | - R Guignard
- Centre de Recherche du CHU de Québec - Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement, Québec, QC, Canada.,Centre de Recherche en Organogénèse Expérimentale de l'Université Laval - LOEX, Québec, QC, Canada
| | - F A Auger
- Centre de Recherche du CHU de Québec - Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement, Québec, QC, Canada.,Centre de Recherche en Organogénèse Expérimentale de l'Université Laval - LOEX, Québec, QC, Canada
| | - P J Rochette
- Centre de Recherche du CHU de Québec - Université Laval, Axe Médecine Régénératrice, Hôpital du Saint-Sacrement, Québec, QC, Canada.,Centre de Recherche en Organogénèse Expérimentale de l'Université Laval - LOEX, Québec, QC, Canada.,Université Laval, Faculté de Médecine, Département d'Ophtalmologie, Université Laval, Québec, QC, Canada
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Lee JW, Ratnakumar K, Hung KF, Rokunohe D, Kawasumi M. Deciphering UV-induced DNA Damage Responses to Prevent and Treat Skin Cancer. Photochem Photobiol 2020; 96:478-499. [PMID: 32119110 DOI: 10.1111/php.13245] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 01/11/2020] [Indexed: 12/11/2022]
Abstract
Ultraviolet (UV) radiation is among the most prevalent environmental factors that influence human health and disease. Even 1 h of UV irradiation extensively damages the genome. To cope with resulting deleterious DNA lesions, cells activate a multitude of DNA damage response pathways, including DNA repair. Strikingly, UV-induced DNA damage formation and repair are affected by chromatin state. When cells enter S phase with these lesions, a distinct mutation signature is created via error-prone translesion synthesis. Chronic UV exposure leads to high mutation burden in skin and consequently the development of skin cancer, the most common cancer in the United States. Intriguingly, UV-induced oxidative stress has opposing effects on carcinogenesis. Elucidating the molecular mechanisms of UV-induced DNA damage responses will be useful for preventing and treating skin cancer with greater precision. Excitingly, recent studies have uncovered substantial depth of novel findings regarding the molecular and cellular consequences of UV irradiation. In this review, we will discuss updated mechanisms of UV-induced DNA damage responses including the ATR pathway, which maintains genome integrity following UV irradiation. We will also present current strategies for preventing and treating nonmelanoma skin cancer, including ATR pathway inhibition for prevention and photodynamic therapy for treatment.
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Affiliation(s)
- Jihoon W Lee
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA
| | - Kajan Ratnakumar
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA
| | - Kai-Feng Hung
- Division of Translational Research, Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan.,School of Dentistry, National Yang-Ming University, Taipei, Taiwan
| | - Daiki Rokunohe
- Department of Dermatology, Hirosaki University Graduate School of Medicine, Hirosaki, Japan
| | - Masaoki Kawasumi
- Division of Dermatology, Department of Medicine, University of Washington, Seattle, WA
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10
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Bustamante M, Hernandez-Ferrer C, Tewari A, Sarria Y, Harrison GI, Puigdecanet E, Nonell L, Kang W, Friedländer MR, Estivill X, González JR, Nieuwenhuijsen M, Young AR. Dose and time effects of solar-simulated ultraviolet radiation on the in vivo human skin transcriptome. Br J Dermatol 2019; 182:1458-1468. [PMID: 31529490 PMCID: PMC7318624 DOI: 10.1111/bjd.18527] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/10/2019] [Indexed: 12/18/2022]
Abstract
Background Terrestrial ultraviolet (UV) radiation causes erythema, oxidative stress, DNA mutations and skin cancer. Skin can adapt to these adverse effects by DNA repair, apoptosis, keratinization and tanning. Objectives To investigate the transcriptional response to fluorescent solar‐simulated radiation (FSSR) in sun‐sensitive human skin in vivo. Methods Seven healthy male volunteers were exposed to 0, 3 and 6 standard erythemal doses (SED). Skin biopsies were taken at 6 h and 24 h after exposure. Gene and microRNA expression were quantified with next generation sequencing. A set of candidate genes was validated by quantitative polymerase chain reaction (qPCR); and wavelength dependence was examined in other volunteers through microarrays. Results The number of differentially expressed genes increased with FSSR dose and decreased between 6 and 24 h. Six hours after 6 SED, 4071 genes were differentially expressed, but only 16 genes were affected at 24 h after 3 SED. Genes for apoptosis and keratinization were prominent at 6 h, whereas inflammation and immunoregulation genes were predominant at 24 h. Validation by qPCR confirmed the altered expression of nine genes detected under all conditions; genes related to DNA repair and apoptosis; immunity and inflammation; pigmentation; and vitamin D synthesis. In general, candidate genes also responded to UVA1 (340–400 nm) and/or UVB (300 nm), but with variations in wavelength dependence and peak expression time. Only four microRNAs were differentially expressed by FSSR. Conclusions The UV radiation doses of this acute study are readily achieved daily during holidays in the sun, suggesting that the skin transcriptional profile of ‘typical’ holiday makers is markedly deregulated. What's already known about this topic? The skin's transcriptional profile underpins its adverse (i.e. inflammation) and adaptive molecular, cellular and clinical responses (i.e. tanning, hyperkeratosis) to solar ultraviolet radiation. Few studies have assessed microRNA and gene expression in vivo in humans, and there is a lack of information on dose, time and waveband effects.
What does this study add? Acute doses of fluorescent solar‐simulated radiation (FSSR), of similar magnitude to those received daily in holiday situations, markedly altered the skin's transcriptional profiles. The number of differentially expressed genes was FSSR‐dose‐dependent, reached a peak at 6 h and returned to baseline at 24 h. The initial transcriptional response involved apoptosis and keratinization, followed by inflammation and immune modulation. In these conditions, microRNA expression was less affected than gene expression.
Linked Comment:Hart. Br J Dermatol 2020; 182:1328–1329. Plain language summary available online Respond to this article
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Affiliation(s)
- M Bustamante
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.,Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - C Hernandez-Ferrer
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.,Computational Health Informatics Program (CHIP), Boston Children's Hospital, Boston, MA, U.S.A
| | - A Tewari
- King's College London, St John's Institute of Dermatology, London, U.K
| | - Y Sarria
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - G I Harrison
- King's College London, St John's Institute of Dermatology, London, U.K
| | - E Puigdecanet
- Servei d'Anàlisi de Microarrays, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - L Nonell
- Servei d'Anàlisi de Microarrays, IMIM (Hospital del Mar Medical Research Institute), Barcelona, Spain
| | - W Kang
- Science for Life Laboratory, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - M R Friedländer
- Science for Life Laboratory, Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, Stockholm, Sweden
| | - X Estivill
- Centre for Genomic Regulation (CRG), The Barcelona Institute of Science and Technology, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain.,Genetics Program, Sidra Medical Center, Al Rayyan Municipality, Qatar
| | - J R González
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - M Nieuwenhuijsen
- ISGlobal, Barcelona Institute for Global Health, Barcelona, Spain.,Universitat Pompeu Fabra (UPF), Barcelona, Spain.,CIBER Epidemiología y Salud Pública (CIBERESP), Barcelona, Spain
| | - A R Young
- King's College London, St John's Institute of Dermatology, London, U.K
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11
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Wang C, Liang H, Lin C, Li F, Xie G, Qiao S, Shi X, Deng J, Zhao X, Wu K, Zhang X. Molecular Subtyping and Prognostic Assessment Based on Tumor Mutation Burden in Patients with Lung Adenocarcinomas. Int J Mol Sci 2019; 20:E4251. [PMID: 31480292 PMCID: PMC6747282 DOI: 10.3390/ijms20174251] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2019] [Revised: 08/18/2019] [Accepted: 08/26/2019] [Indexed: 12/15/2022] Open
Abstract
The distinct molecular subtypes of lung cancer are defined by monogenic biomarkers, such as EGFR, KRAS, and ALK rearrangement. Tumor mutation burden (TMB) is a potential biomarker for response to immunotherapy, which is one of the measures for genomic instability. The molecular subtyping based on TMB has not been well characterized in lung adenocarcinomas in the Chinese population. Here we performed molecular subtyping based on TMB with the published whole exome sequencing data of 101 lung adenocarcinomas and compared the different features of the classified subtypes, including clinical features, somatic driver genes, and mutational signatures. We found that patients with lower TMB have a longer disease-free survival, and higher TMB is associated with smoking and aging. Analysis of somatic driver genes and mutational signatures demonstrates a significant association between somatic RYR2 mutations and the subtype with higher TMB. Molecular subtyping based on TMB is a potential prognostic marker for lung adenocarcinoma. Signature 4 and the mutation of RYR2 are highlighted in the TMB-High group. The mutation of RYR2 is a significant biomarker associated with high TMB in lung adenocarcinoma.
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Affiliation(s)
- Changzheng Wang
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 101408, China
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen 518120, China
| | - Han Liang
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen 518120, China
| | - Cong Lin
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen 518120, China
| | - Fuqiang Li
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen 518120, China
| | - Guoyun Xie
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen 518120, China
| | - Sitan Qiao
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen 518120, China
| | | | - Jianlian Deng
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 101408, China
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen 518120, China
| | - Xin Zhao
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen 518120, China
| | - Kui Wu
- BGI-Shenzhen, Shenzhen 518083, China
- China National GeneBank, BGI-Shenzhen, Shenzhen 518120, China
| | - Xiuqing Zhang
- School of Future Technology, University of Chinese Academy of Sciences, Beijing 101408, China.
- BGI-Shenzhen, Shenzhen 518083, China.
- China National GeneBank, BGI-Shenzhen, Shenzhen 518120, China.
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12
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Ding X, Willenborg S, Bloch W, Wickström SA, Wagle P, Brodesser S, Roers A, Jais A, Brüning JC, Hall MN, Rüegg MA, Eming SA. Epidermal mammalian target of rapamycin complex 2 controls lipid synthesis and filaggrin processing in epidermal barrier formation. J Allergy Clin Immunol 2019; 145:283-300.e8. [PMID: 31401286 DOI: 10.1016/j.jaci.2019.07.033] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2019] [Revised: 06/21/2019] [Accepted: 07/08/2019] [Indexed: 12/31/2022]
Abstract
BACKGROUND Perturbation of epidermal barrier formation will profoundly compromise overall skin function, leading to a dry and scaly, ichthyosis-like skin phenotype that is the hallmark of a broad range of skin diseases, including ichthyosis, atopic dermatitis, and a multitude of clinical eczema variants. An overarching molecular mechanism that orchestrates the multitude of factors controlling epidermal barrier formation and homeostasis remains to be elucidated. OBJECTIVE Here we highlight a specific role of mammalian target of rapamycin complex 2 (mTORC2) signaling in epidermal barrier formation. METHODS Epidermal mTORC2 signaling was specifically disrupted by deleting rapamycin-insensitive companion of target of rapamycin (Rictor), encoding an essential subunit of mTORC2 in mouse epidermis (epidermis-specific homozygous Rictor deletion [RicEKO] mice). Epidermal structure and barrier function were investigated through a combination of gene expression, biochemical, morphological and functional analysis in RicEKO and control mice. RESULTS RicEKO newborns displayed an ichthyosis-like phenotype characterized by dysregulated epidermal de novo lipid synthesis, altered lipid lamellae structure, and aberrant filaggrin (FLG) processing. Despite a compensatory transcriptional epidermal repair response, the protective epidermal function was impaired in RicEKO mice, as revealed by increased transepidermal water loss, enhanced corneocyte fragility, decreased dendritic epidermal T cells, and an exaggerated percutaneous immune response. Restoration of Akt-Ser473 phosphorylation in mTORC2-deficient keratinocytes through expression of constitutive Akt rescued FLG processing. CONCLUSION Our findings reveal a critical metabolic signaling relay of barrier formation in which epidermal mTORC2 activity controls FLG processing and de novo epidermal lipid synthesis during cornification. Our findings provide novel mechanistic insights into epidermal barrier formation and could open up new therapeutic opportunities to restore defective epidermal barrier conditions.
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Affiliation(s)
- Xiaolei Ding
- Department of Dermatology, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany
| | | | - Wilhelm Bloch
- Department of Molecular and Cellular Sport Medicine, German Sport University Cologne, Cologne, Germany
| | - Sara A Wickström
- Paul Gerson Unna Group "Skin Homeostasis and Ageing", Max Planck Institute for Biology of Ageing, Cologne, Germany; Helsinki Institute of Life Science, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland; Wihuri Research Institute, Biomedicum Helsinki, University of Helsinki, Helsinki, Finland; Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Prerana Wagle
- Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Susanne Brodesser
- Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany
| | - Axel Roers
- Institute for Immunology, Medical Faculty Carl Gustav Carus, TU Dresden, Dresden, Germany
| | - Alexander Jais
- Max Planck Institute for Metabolism Research, Cologne, Germany
| | - Jens C Brüning
- Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany; Max Planck Institute for Metabolism Research, Cologne, Germany
| | | | | | - Sabine A Eming
- Department of Dermatology, University of Cologne, Cologne, Germany; Center for Molecular Medicine Cologne (CMMC), University of Cologne, Cologne, Germany; Cluster of Excellence Cellular Stress Responses in Aging-associated Diseases (CECAD), University of Cologne, Cologne, Germany.
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13
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Marionnet C, Bernerd F. In Vitro Skin Models for the Evaluation of Sunscreen-Based Skin Photoprotection: Molecular Methodologies and Opportunities. Curr Med Chem 2019; 26:1874-1890. [DOI: 10.2174/0929867324666170303124247] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Revised: 02/13/2017] [Accepted: 03/02/2017] [Indexed: 12/18/2022]
Abstract
Identifying and understanding the biological events that occur following ultraviolet
(UV) exposure are mandatory to elucidate the biological and clinical consequences of sun exposure,
and to provide efficient and adequate photoprotection strategies. The main UVinduced
biological features (markers related to sunburn, cancer, photoaging immunosuppression,
pigmentation), characterized in human skin in vivo, could be reproduced in adapted
models of reconstructed skin in vitro, attesting their high relevance in the field of photobiology.
In turn, 3D skin models were useful to discover precise biological pathways involved in
UV response and were predictive of in vivo situation. Although they did not follow a strict
validation process for the determination of protection factors, they enabled to evidence important
concepts in photoprotection. Indeed, the use of reconstructed skin model highlighted the
importance of broad spectrum sunscreen use to protect essential cellular functions, and biologically
proved that SPF value was not predictive of the level of protection in the UVA
wavelength domain. New biological approaches, such as transcriptomic or proteomic studies
as well as quantitative and qualitative determination of DNA damage, will indisputably increase
the added value of such systems for sunscreen efficiency evaluation.
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14
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Corzo-León DE, Munro CA, MacCallum DM. An ex vivo Human Skin Model to Study Superficial Fungal Infections. Front Microbiol 2019; 10:1172. [PMID: 31231322 PMCID: PMC6560176 DOI: 10.3389/fmicb.2019.01172] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2019] [Accepted: 05/08/2019] [Indexed: 12/11/2022] Open
Abstract
Human skin fungal infections (SFIs) affect 25% of the world's population. Most of these infections are superficial. The main limitation of current animal models of human superficial SFIs is that clinical presentation is different between the different species and animal models do not accurately reflect the human skin environment. An ex vivo human skin model was therefore developed and standardised to accurately model SFIs. In this manuscript, we report our protocol for setting up ex vivo human skin infections and report results from a primary superficial skin infection with Trichophyton rubrum, an anthropophilic fungus. The protocol includes a detailed description of the methodology to prepare the skin explants, establish infection, avoid contamination, and obtain high quality samples for further downstream analyses. Scanning electronic microscopy (SEM), histology and fluorescent microscopy were applied to evaluate skin cell viability and fungal morphology. Furthermore, we describe a broad range of assays, such as RNA extraction and qRT-PCR for human gene expression, and protein extraction from tissue and supernatants for proteomic analysis by liquid chromatography-mass spectrometry (LC-MS/MS). Non-infected skin was viable after 14 days of incubation, expressed genes and contained proteins associated with proliferative, immune and differentiation functions. The macroscopic damage caused by T. rubrum had a similar appearance to the one expected in clinical settings. Finally, using this model, the host response to T. rubrum infection can be evaluated at different levels.
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Affiliation(s)
| | | | - Donna M. MacCallum
- MRC Centre for Medical Mycology at the University of Aberdeen, Institute of Medical Sciences, Aberdeen, United Kingdom
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15
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Carter CJ. Autism genes and the leukocyte transcriptome in autistic toddlers relate to pathogen interactomes, infection and the immune system. A role for excess neurotrophic sAPPα and reduced antimicrobial Aβ. Neurochem Int 2019; 126:36-58. [PMID: 30862493 DOI: 10.1016/j.neuint.2019.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 02/22/2019] [Accepted: 03/06/2019] [Indexed: 12/20/2022]
Abstract
Prenatal and early childhood infections have been implicated in autism. Many autism susceptibility genes (206 Autworks genes) are localised in the immune system and are related to immune/infection pathways. They are enriched in the host/pathogen interactomes of 18 separate microbes (bacteria/viruses and fungi) and to the genes regulated by bacterial toxins, mycotoxins and Toll-like receptor ligands. This enrichment was also observed for misregulated genes from a microarray study of leukocytes from autistic toddlers. The upregulated genes from this leukocyte study also matched the expression profiles in response to numerous infectious agents from the Broad Institute molecular signatures database. They also matched genes related to sudden infant death syndrome and autism comorbid conditions (autoimmune disease, systemic lupus erythematosus, diabetes, epilepsy and cardiomyopathy) as well as to estrogen and thyrotropin responses and to those upregulated by different types of stressors including oxidative stress, hypoxia, endoplasmic reticulum stress, ultraviolet radiation or 2,4-dinitrofluorobenzene, a hapten used to develop allergic skin reactions in animal models. The oxidative/integrated stress response is also upregulated in the autism brain and may contribute to myelination problems. There was also a marked similarity between the expression signatures of autism and Alzheimer's disease, and 44 shared autism/Alzheimer's disease genes are almost exclusively expressed in the blood-brain barrier. However, in contrast to Alzheimer's disease, levels of the antimicrobial peptide beta-amyloid are decreased and the levels of the neurotrophic/myelinotrophic soluble APP alpha are increased in autism, together with an increased activity of α-secretase. sAPPα induces an increase in glutamatergic and a decrease in GABA-ergic synapses creating and excitatory/inhibitory imbalance that has also been observed in autism. A literature survey showed that multiple autism genes converge on APP processing and that many are able to increase sAPPalpha at the expense of beta-amyloid production. A genetically programmed tilt of this axis towards an overproduction of neurotrophic/gliotrophic sAPPalpha and underproduction of antimicrobial beta-amyloid may explain the brain overgrowth and myelination dysfunction, as well as the involvement of pathogens in autism.
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Affiliation(s)
- C J Carter
- PolygenicPathways, 41C Marina, Saint Leonard's on Sea, TN38 0BU, East Sussex, UK.
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16
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Makino T, Mizawa M, Yoshihisa Y, Shimizu T. Ultraviolet B irradiation increases the expression of trichohyalin-like 1 protein in human skin xenotransplants. Clin Exp Dermatol 2019; 44:773-776. [PMID: 30610764 DOI: 10.1111/ced.13904] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/07/2018] [Indexed: 11/29/2022]
Abstract
Trichohyalin-like (TCHHL)1 is a member of the fused-type S100 protein family. Its function remains unknown, although it has been reported to be expressed in the basal layer of the normal epidermis. The aim of this study was to investigate the effects of ultraviolet B (UVB) irradiation on the expression of TCHHL1 in human skin xenotransplants. Expression of TCHHL1 mRNA was increased in the UVB-exposed skin 2 days after UVB irradiation. TCHHL1 was immunohistochemically detected in the basal layers after sham irradiation. However, on Day 2 after irradiation, the TCHHL1 signals were spread throughout the basal and spinous layers of the irradiated skin, with increased expression of cytokeratin 14 and a dramatic increase in the number of Ki67-positive cells observed. These results show that TCHHL1 is a novel protein whose expression can be increased by UVB irradiation. In addition, this study experimentally shows that TCHHL1 is expressed in proliferative keratinocytes.
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Affiliation(s)
- T Makino
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - M Mizawa
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - Y Yoshihisa
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
| | - T Shimizu
- Department of Dermatology, Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, Toyama, Japan
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17
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Mirzoeva S, Tong X, Bridgeman BB, Plebanek MP, Volpert OV. Apigenin Inhibits UVB-Induced Skin Carcinogenesis: The Role of Thrombospondin-1 as an Anti-Inflammatory Factor. Neoplasia 2018; 20:930-942. [PMID: 30118999 PMCID: PMC6098219 DOI: 10.1016/j.neo.2018.07.005] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Revised: 07/24/2018] [Accepted: 07/30/2018] [Indexed: 01/30/2023]
Abstract
We have previously demonstrated that apigenin promotes the expression of antiangiogenic protein thrombospondin-1 (TSP1) via a mechanism driven by mRNA-binding protein HuR. Here, we generated a novel mouse model with whole-body THBS-1 gene knockout on SKH-1 genetic background, which allows studies of UVB-induced acute skin damage and carcinogenesis and tests TSP1 involvement in apigenin's anticancer effects. Apigenin significantly inhibited UVB-induced carcinogenesis in the wild-type (WT) animals but not in TSP1 KO (TKO) mice, suggesting that TSP1 is a critical component of apigenin's chemopreventive function in UVB-induced skin cancer. Importantly, TKO mice presented with the elevated cutaneous inflammation at baseline, which was manifested by increased inflammatory infiltrates (neutrophils and macrophages) and elevated levels of the two key inflammatory cytokines, IL-6 and IL-12. In agreement, maintaining normal TSP1 expression in the UVB-irradiated skin of WT mice using topical apigenin application caused a marked decrease of circulating inflammatory cytokines. Finally, TKO mice showed an altered population dynamics of the bone marrow myeloid progenitor cells (CD11b+), with dramatic expansion of the population of neutrophil progenitors (Ly6ClowLy6Ghigh) compared to the WT control. Our results indicate that the cutaneous tumor suppressor TSP1 is a critical mediator of the in vivo anticancer effect of apigenin in skin, specifically of its anti-inflammatory action.
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Affiliation(s)
- Salida Mirzoeva
- Department of Dermatology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Xin Tong
- Department of Pathology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611.
| | - Bryan B Bridgeman
- Division of Hematology and Oncology, Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Michael P Plebanek
- Department of Urology, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Olga V Volpert
- Department of Cancer Biology, The University of Texas MD Anderson Cancer Center, Houston, TX 77054
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18
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Marais TLD, Kluz T, Xu D, Zhang X, Gesumaria L, Matsui MS, Costa M, Sun H. Transcription factors and stress response gene alterations in human keratinocytes following Solar Simulated Ultra Violet Radiation. Sci Rep 2017; 7:13622. [PMID: 29051608 PMCID: PMC5648893 DOI: 10.1038/s41598-017-13765-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 09/27/2017] [Indexed: 12/11/2022] Open
Abstract
Ultraviolet radiation (UVR) from sunlight is the major effector for skin aging and carcinogenesis. However, genes and pathways altered by solar-simulated UVR (ssUVR), a mixture of UVA and UVB, are not well characterized. Here we report global changes in gene expression as well as associated pathways and upstream transcription factors in human keratinocytes exposed to ssUVR. Human HaCaT keratinocytes were exposed to either a single dose or 5 repetitive doses of ssUVR. Comprehensive analyses of gene expression profiles as well as functional annotation were performed at 24 hours post irradiation. Our results revealed that ssUVR modulated genes with diverse cellular functions changed in a dose-dependent manner. Gene expression in cells exposed to a single dose of ssUVR differed significantly from those that underwent repetitive exposures. While single ssUVR caused a significant inhibition in genes involved in cell cycle progression, especially G2/M checkpoint and mitotic regulation, repetitive ssUVR led to extensive changes in genes related to cell signaling and metabolism. We have also identified a panel of ssUVR target genes that exhibited persistent changes in gene expression even at 1 week after irradiation. These results revealed a complex network of transcriptional regulators and pathways that orchestrate the cellular response to ssUVR.
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Affiliation(s)
- Thomas L Des Marais
- New York University, Department of Environmental Medicine, Tuxedo, New York, United States of America
| | - Thomas Kluz
- New York University, Department of Environmental Medicine, Tuxedo, New York, United States of America
| | - Dazhong Xu
- New York Medical College School of Medicine, Department of Pathology, Valhalla, New York, United States of America
| | - Xiaoru Zhang
- New York University, Department of Environmental Medicine, Tuxedo, New York, United States of America
| | - Lisa Gesumaria
- New York University, Department of Environmental Medicine, Tuxedo, New York, United States of America
| | - Mary S Matsui
- Estee Lauder Companies, Inc., Melville, New York, United States of America
| | - Max Costa
- New York University, Department of Environmental Medicine, Tuxedo, New York, United States of America.
| | - Hong Sun
- New York University, Department of Environmental Medicine, Tuxedo, New York, United States of America.
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19
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Semenchenko K, Wasylyk C, Cheung H, Tourrette Y, Maas P, Schalken JA, van der Pluijm G, Wasylyk B. XRP44X, an Inhibitor of Ras/Erk Activation of the Transcription Factor Elk3, Inhibits Tumour Growth and Metastasis in Mice. PLoS One 2016; 11:e0159531. [PMID: 27427904 PMCID: PMC4948895 DOI: 10.1371/journal.pone.0159531] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2016] [Accepted: 07/04/2016] [Indexed: 02/06/2023] Open
Abstract
Transcription factors have an important role in cancer but are difficult targets for the development of tumour therapies. These factors include the Ets family, and in this study Elk3 that is activated by Ras oncogene /Erk signalling, and is involved in angiogenesis, malignant progression and epithelial-mesenchymal type processes. We previously described the identification and in-vitro characterisation of an inhibitor of Ras / Erk activation of Elk3 that also affects microtubules, XRP44X. We now report an initial characterisation of the effects of XRP44X in-vivo on tumour growth and metastasis in three preclinical models mouse models, subcutaneous xenografts, intra-cardiac injection-bone metastasis and the TRAMP transgenic mouse model of prostate cancer progression. XRP44X inhibits tumour growth and metastasis, with limited toxicity. Tumours from XRP44X-treated animals have decreased expression of genes containing Elk3-like binding motifs in their promoters, Elk3 protein and phosphorylated Elk3, suggesting that perhaps XRP44X acts in part by inhibiting the activity of Elk3. Further studies are now warranted to develop XRP44X for tumour therapy.
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Affiliation(s)
- Kostyantyn Semenchenko
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France
- Université de Strasbourg, Illkirch, France
| | - Christine Wasylyk
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France
- Université de Strasbourg, Illkirch, France
| | - Henry Cheung
- Leiden University Medical Center, Leiden, The Netherlands
| | - Yves Tourrette
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France
- Université de Strasbourg, Illkirch, France
| | - Peter Maas
- SPECS, Kluyverweg 6, 2629 HT Delft, The Netherlands
| | - Jack A Schalken
- Radboud University Medical Center, Nijmegen, 6525 GA, The Netherlands
| | | | - Bohdan Wasylyk
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France
- Centre National de la Recherche Scientifique, UMR7104, Illkirch, France
- Institut National de la Santé et de la Recherche Médicale, U964, Illkirch, France
- Université de Strasbourg, Illkirch, France
- * E-mail:
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Na J, Lee K, Na W, Shin JY, Lee MJ, Yune TY, Lee HK, Jung HS, Kim WS, Ju BG. Histone H3K27 Demethylase JMJD3 in Cooperation with NF-κB Regulates Keratinocyte Wound Healing. J Invest Dermatol 2016; 136:847-858. [DOI: 10.1016/j.jid.2015.11.029] [Citation(s) in RCA: 55] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Revised: 11/17/2015] [Accepted: 11/30/2015] [Indexed: 01/07/2023]
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Schütz R, Kuratli K, Richard N, Stoll C, Schwager J. Mitochondrial and glycolytic activity of UV-irradiated human keratinocytes and its stimulation by a Saccharomyces cerevisiae autolysate. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2016; 159:142-8. [PMID: 27060217 DOI: 10.1016/j.jphotobiol.2016.03.031] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/19/2015] [Revised: 03/23/2016] [Accepted: 03/23/2016] [Indexed: 12/18/2022]
Abstract
Cutaneous aging is correlated with mitochondrial dysfunction and a concomitant decline in energy metabolism that can be accelerated by extrinsic factors such as UV radiation (UVR). In this study we compared cellular bioenergetics of normal and UV-irradiated primary human epidermal keratinocytes. Moreover, we investigated the influence of a Saccharomyces cerevisiae autolysate (SCA) on stressed keratinocytes to regain cellular homeostasis. Cellular metabolism was assessed by extracellular flux analysis which measures oxygen consumption rate (OCR) and extracellular acidification rate (ECAR) as well as by ATP quantification. The expression level of ten mitochondria related genes in normal and UVR-stimulated (60mJ/cm(2) UVB) keratinocytes was quantified by real-time PCR and the impact of SCA addition was determined. Sublethal UV stress increased mitochondrial dysfunction in keratinocytes which resulted in reduced viability, uncoupled oxidative phosphorylation, and down-regulated mitochondrial gene expression. Particularly, gene expression of SHDA, UPC2, BID, and ATP5A1 was reduced about twofold within 4h. Treatment of keratinocytes with SCA shifted cellular metabolism towards a more energetic status by increasing the respiratory rate and glycolysis. SCA also stimulated cellular ATP production after short (4h) and prolonged (22h) incubations and induced the expression of genes related to mitochondrial function towards normal expression levels upon UV irradiation. The decreased respiratory capacity of UV-irradiated keratinocytes was partially compensated by the addition of SCA which enhanced glycolytic activity and thereby increased cellular resistance to environmental stress.
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Affiliation(s)
- Rolf Schütz
- DSM Nutritional Products Ltd, R&D Personal Care, Wurmisweg 576, CH-4303 Kaiseraugst, Switzerland.
| | - Karin Kuratli
- DSM Nutritional Products Ltd, Department of Human Nutrition and Health, Wurmisweg 576, CH-4303 Kaiseraugst, Switzerland.
| | - Nathalie Richard
- DSM Nutritional Products Ltd, Department of Human Nutrition and Health, Wurmisweg 576, CH-4303 Kaiseraugst, Switzerland.
| | - Clarissa Stoll
- DSM Nutritional Products Ltd, R&D Personal Care, Wurmisweg 576, CH-4303 Kaiseraugst, Switzerland.
| | - Joseph Schwager
- DSM Nutritional Products Ltd, Department of Human Nutrition and Health, Wurmisweg 576, CH-4303 Kaiseraugst, Switzerland.
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22
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Rauhala L, Hämäläinen L, Dunlop TW, Pehkonen P, Bart G, Kokkonen M, Tammi M, Tammi R, Pasonen-Seppänen S. The organic osmolyte betaine induces keratin 2 expression in rat epidermal keratinocytes — A genome-wide study in UVB irradiated organotypic 3D cultures. Toxicol In Vitro 2015; 30:462-75. [DOI: 10.1016/j.tiv.2015.09.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2015] [Revised: 09/01/2015] [Accepted: 09/12/2015] [Indexed: 12/18/2022]
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23
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Liao XH, Zheng L, He HP, Zheng DL, Wei ZQ, Wang N, Dong J, Ma WJ, Zhang TC. STAT3 regulated ATR via microRNA-383 to control DNA damage to affect apoptosis in A431 cells. Cell Signal 2015; 27:2285-95. [DOI: 10.1016/j.cellsig.2015.08.005] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2015] [Accepted: 08/05/2015] [Indexed: 10/24/2022]
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24
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Leśniak W, Graczyk-Jarzynka A. The S100 proteins in epidermis: Topology and function. Biochim Biophys Acta Gen Subj 2015; 1850:2563-72. [PMID: 26409143 DOI: 10.1016/j.bbagen.2015.09.015] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2015] [Accepted: 09/20/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND S100 proteins are small calcium binding proteins encoded by genes located in the epidermal differentiation complex (EDC). Differently to other proteins encoded by EDC genes, which are indispensable for normal epidermal differentiation, the role of S100 proteins in the epidermis remains largely unknown. SCOPE OF REVIEW Particular S100 proteins differ in their distribution in epidermal layers, skin appendages, melanocytes and Langerhans cells. Taking into account that each epidermal component consists of specialized cells with well-defined functions, such differential distribution may be indicative of the function of a given S100 protein. We used this criterion together with the survey of the current experimental data pertinent to epidermis to provide a fairly comprehensive view on the possible function of individual S100 proteins in this tissue. MAJOR CONCLUSIONS S100 proteins are differently expressed and, despite extensive structural homology, perform diverse functions in the epidermis. Certain S100 proteins probably ensure constant epidermal renewal and support wound healing while others act in epidermal differentiation or have a protective role. As their expression is differently affected in various skin pathologies, particular S100 proteins could be valuable diagnostic markers. GENERAL SIGNIFICANCE S100 proteins seem to be important although not yet fully recognized epidermal constituents. Better understanding of their role in the epidermis might be helpful in designing therapies to various skin diseases.
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Affiliation(s)
- Wiesława Leśniak
- Department of Molecular and Cellular Neurobiology, Nencki Institute of Experimental Biology, 3 Pasteur Street, 02-093 Warsaw, Poland.
| | - Agnieszka Graczyk-Jarzynka
- Department of Molecular and Cellular Neurobiology, Nencki Institute of Experimental Biology, 3 Pasteur Street, 02-093 Warsaw, Poland
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25
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Fazekas B, Polyánka H, Bebes A, Tax G, Szabó K, Farkas K, Kinyó A, Nagy F, Kemény L, Széll M, Ádám É. UVB-dependent changes in the expression of fast-responding early genes is modulated by huCOP1 in keratinocytes. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2014; 140:215-22. [PMID: 25169772 DOI: 10.1016/j.jphotobiol.2014.08.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2014] [Revised: 07/23/2014] [Accepted: 08/01/2014] [Indexed: 10/24/2022]
Abstract
Ultraviolet (UV) B is the most prominent physical carcinogen in the environment leading to the development of various skin cancers. We have previously demonstrated that the human ortholog of the Arabidopsis thaliana constitutive photomorphogenesis 1 (COP1) protein, huCOP1, is expressed in keratinocytes in a UVB-regulated manner and is a negative regulator of p53 as a posttranslational modifier. However, it was not known whether huCOP1 plays a role in mediating the UVB-induced early transcriptional responses of human keratinocytes. In this study, we report that stable siRNA-mediated silencing of huCOP1 affects the UVB response of several genes within 2 h of irradiation, indicating that altered huCOP1 expression sensitizes the cells toward UVB. Pathway analysis identified a molecular network in which 13 of the 30 examined UVB-regulated genes were organized around three central proteins. Since the expression of the investigated genes was upregulated by UVB in the siCOP1 cell line, we hypothesize that huCOP1 is a repressor of the identified pathway. Several members of the network have been implicated previously in the pathogenesis of non-melanoma skin cancers; therefore, clarifying the role of huCOP1 in these skin diseases may have clinical relevance in the future.
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Affiliation(s)
- B Fazekas
- Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, Szeged, Hungary.
| | - H Polyánka
- MTA-SZTE Dermatological Research Group, University of Szeged, Szeged, Hungary
| | - A Bebes
- Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - G Tax
- Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - K Szabó
- MTA-SZTE Dermatological Research Group, University of Szeged, Szeged, Hungary
| | - K Farkas
- MTA-SZTE Dermatological Research Group, University of Szeged, Szeged, Hungary
| | - A Kinyó
- Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - F Nagy
- Institute of Plant Biology, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
| | - L Kemény
- Department of Dermatology and Allergology, Faculty of Medicine, University of Szeged, Szeged, Hungary; MTA-SZTE Dermatological Research Group, University of Szeged, Szeged, Hungary
| | - M Széll
- MTA-SZTE Dermatological Research Group, University of Szeged, Szeged, Hungary; Institute of Medical Genetics, Faculty of Medicine, University of Szeged, Szeged, Hungary
| | - É Ádám
- Institute of Plant Biology, Biological Research Centre of the Hungarian Academy of Sciences, Szeged, Hungary
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Blumenberg M. Skinomics: past, present and future for diagnostic microarray studies in dermatology. Expert Rev Mol Diagn 2014; 13:885-94. [PMID: 24151852 DOI: 10.1586/14737159.2013.846827] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Easily accessible, skin was among the first targets analyzed using 'omics' and dermatology embraced the approaches very early. Microarrays have been used to define disease markers, identify transcriptional changes and even trace the course of treatment. Melanoma and psoriasis have been explored using microarrays. Particularly noteworthy is the multinational mapping of psoriasis susceptibility loci. The transcriptional changes in psoriasis have been identified using hundreds of biopsies. Epidermal keratinocytes have been studied because they respond to UV light, infections, inflammatory and immunomodulating cytokines, toxins and so on. Epidermal differentiation genes are being characterized and are expressed in human epidermal stem cells. Exciting discoveries defining human skin microbiomes have opened a new field of research with great medical potential. Specific to dermatology, the non-invasive skin sampling for microarray studies, using tape stripping, has been developed; it promises to advance dermatology toward 'omics' techniques directly applicable to the personalized medicine of the future.
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Affiliation(s)
- Miroslav Blumenberg
- The R.O. Perelman Department of Dermatology, Department of Biochemistry and Molecular Pharmacology, the NYU Cancer Institute, NYU Langone Medical Center, NYU School of Medicine, 455 First Avenue, P.H.B. Room 874, New York NY 10016, USA
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27
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Fernandez TL, Van Lonkhuyzen DR, Dawson RA, Kimlin MG, Upton Z. Characterization of a human skin equivalent model to study the effects of ultraviolet B radiation on keratinocytes. Tissue Eng Part C Methods 2014; 20:588-98. [PMID: 24219750 DOI: 10.1089/ten.tec.2013.0293] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The incidences of skin cancers resulting from chronic ultraviolet radiation (UVR) exposure are on the incline in both Australia and globally. Hence, the cellular and molecular pathways that are associated with UVR-induced photocarcinogenesis need to be urgently elucidated, in order to develop more robust preventative and treatment strategies against skin cancers. In vitro investigations into the effects of UVR (in particular, the highly mutagenic UVB wavelength) have, to date, mainly involved the use of cell culture and animal models. However, these models possess biological disparities to native skin, which, to some extent, have limited their relevance to the in vivo situation. To address this, we characterized a three-dimensional, tissue-engineered human skin equivalent (HSE) model (consisting of primary human keratinocytes cultured on a dermal-derived scaffold) as a representation of a more physiologically relevant platform to study keratinocyte responses to UVB. Significantly, we demonstrate that this model retains several important epidermal properties of native skin. Moreover, UVB irradiation of the HSE constructs was shown to induce key markers of photodamage in the HSE keratinocytes, including the formation of cyclobutane pyrimidine dimers, the activation of apoptotic pathways, the accumulation of p53, and the secretion of inflammatory cytokines. Importantly, we also demonstrate that the UVB-exposed HSE constructs retain the capacity for epidermal repair and regeneration after photodamage. Together, our results demonstrate the potential of this skin equivalent model as a tool to study various aspects of the acute responses of human keratinocytes to UVB radiation damage.
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Affiliation(s)
- Tara L Fernandez
- 1 Tissue Repair and Regeneration Program, Institute of Health and Biomedical Innovation , Queensland University of Technology, Kelvin Grove, Australia
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28
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Upregulation of MMP12 and its activity by UVA1 in human skin: potential implications for photoaging. J Invest Dermatol 2014; 134:2598-2609. [PMID: 24714202 DOI: 10.1038/jid.2014.173] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Revised: 02/22/2014] [Accepted: 03/11/2014] [Indexed: 01/18/2023]
Abstract
UVA1 constitutes around 75% of the terrestrial UV radiation, and most of the output of artificial tanning sources. However, the molecular effects of UVA1 in human skin in vivo are surprisingly poorly understood. We have examined time-dependent whole-genome expression, along with mRNA and protein changes in the skin after one minimal erythema dose of spectrally pure UVA1 (50 J cm(-2)) and 300 nm UVB (30 mJ cm(-2)). After 24 hours, the genes induced to the greatest extent were those involved in extracellular matrix remodeling with both UVA1 (P=5.5e-7) and UVB (P=2.9e-22). UVA1 and UVB caused different effects on matrix metalloproteinase (MMP) expression: UVB induced MMP1, MMP3, and MMP10 mRNA at 24 hours to a much greater extent than UVA1. MMP12 induction by UVA1 at 6 hours is marked and much greater than that by UVB. We have found that MMP12 mRNA induction by UVA1 resulted in expression of MMP12 protein, which is functional as an elastase. This induction of elastase activity did not occur with UVB. We hypothesize that the UVA1 induction of MMP12 mediates some of its photoaging effects, particularly by contributing to elastin degeneration in late solar elastosis. MMP12 is a good marker of UVA1 exposure.
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29
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LEE KWANGSIK, CHA HWAJUN, LEE GHANGTAI, LEE KUNKOOK, HONG JINTAE, AHN KYUJOONG, AN INSOOK, AN SUNGKWAN, BAE SEUNGHEE. Troxerutin induces protective effects against ultraviolet B radiation through the alteration of microRNA expression in human HaCaT keratinocyte cells. Int J Mol Med 2014; 33:934-42. [DOI: 10.3892/ijmm.2014.1641] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Accepted: 01/20/2014] [Indexed: 11/05/2022] Open
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30
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Optimization and comprehensive characterization of a faithful tissue culture model of the benign and malignant human prostate. J Transl Med 2014; 94:208-21. [PMID: 24296879 PMCID: PMC3946793 DOI: 10.1038/labinvest.2013.141] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2013] [Revised: 10/04/2013] [Accepted: 10/28/2013] [Indexed: 01/22/2023] Open
Abstract
Few preclinical models accurately depict normal human prostate tissue or primary prostate cancer (PCa). In vitro systems typically lack complex cellular interactions among structured prostatic epithelia and a stromal microenvironment, and genetic and molecular fidelity are concerns in both in vitro and in vivo models. 'Tissue slice cultures' (TSCs) provide realistic preclinical models of diverse tissues and organs, but have not been fully developed or widely utilized for prostate studies. Problems encountered include degeneration of differentiated secretory cells, basal cell hyperplasia, and poor survival of PCa. Here, we optimized, characterized, and applied a TSC model of primary human PCa and benign prostate tissue that overcomes many deficiencies of current in vitro models. Tissue cores from fresh prostatectomy specimens were precision-cut at 300 μm and incubated in a rotary culture apparatus. The ability of varied culture conditions to faithfully maintain benign and cancer cell and tissue structure and function over time was evaluated by immunohistological and biochemical assays. After optimization of the culture system, molecular and cellular responses to androgen ablation and to piperlongumine (PL), purported to specifically reduce androgen signaling in PCa, were investigated. Optimized culture conditions successfully maintained the structural and functional fidelity of both benign and PCa TSCs for 5 days. TSCs exhibited androgen dependence, appropriately undergoing ductal degeneration, reduced proliferation, and decreased prostate-specific antigen expression upon androgen ablation. Further, TSCs revealed cancer-specific reduction of androgen receptor and increased apoptosis upon treatment with PL, validating data from cell lines. We demonstrate a TSC model that authentically recapitulates the structural, cellular, and genetic characteristics of the benign and malignant human prostate, androgen dependence of the native tissue, and cancer-specific response to a potentially new therapeutic for PCa. The work described herein provides a basis for advancing the experimental utility of the TSC model.
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31
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Wei L, Lian B, Zhang Y, Li W, Gu J, He X, Xie L. Application of microRNA and mRNA expression profiling on prognostic biomarker discovery for hepatocellular carcinoma. BMC Genomics 2014; 15 Suppl 1:S13. [PMID: 24564407 PMCID: PMC4046763 DOI: 10.1186/1471-2164-15-s1-s13] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Background Hepatocellular carcinoma (HCC) is one of the most highly malignant and lethal cancers of the world. Its pathogenesis has been reported to be multi-factorial, and the molecular carcinogenesis of HCC can not be attributed to just a few individual genes. Based on the microRNA and mRNA expression profiling of normal liver tissues, pericancerous hepatocellular tissues and hepatocellular carcinoma tissues, we attempted to find prognosis related gene sets for HCC patients. Results We identified differentially expressed genes (DEG) from three comparisons: Cancer/Normal, Cancer/Pericancerous and Pericancerous/Normal. GSEA (gene set enrichment analysis) were performed. Based on the enriched gene sets of GO terms, pathways and transcription factor targets, it was found that the genome instability and cell proliferation increased while the metabolism and differentiation decreased in HCC tissues. The expression profile of DEGs in each enriched gene set was used to correlate to the postoperative survival time of HCC patients. Nine gene sets were found to prognostic correlation. Furthermore, after substituting DEG-targeting-microRNA for DEG members of each gene set, two gene sets with the microRNA expression profiles were obtained that had prognostic potential. Conclusions The malignancy of HCC could be represented by gene sets, and pericancerous liver exhibits important characteristics of liver cancer. The expression level of gene sets not only in HCC but also in the pericancerous liver showed potential for prognosis implying an option for HCC prognosis at an early stage. Additionally, the gene-targeting-microRNA expression profiles also showed prognostic potential, demonstrating that the multi-factorial molecular pathogenesis of HCC is contributed by various genes and microRNAs. Electronic supplementary material The online version of this article (doi:10.1186/1471-2164-15-S1-S13) contains supplementary material, which is available to authorized users.
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32
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Abstract
DNA microarrays are capable of following the level of expression of, virtually, all genes in a human tissue. This has been employed to determine the aberrant gene expression profiles in many skin diseases, including ultraviolet light damage, inflammatory processes and cancers. Because of its accessibility, skin also served as one of the initial targets of basic research using DNA microarrays. Both the epidermis and dermis have been extensively investigated. Development of bed-side uses of DNA arrays, and the concomitant price reduction of the materials and methods of microarray analyses, holds great promise for improved diagnosis, treatment and prevention of dermatologic disorders.
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Affiliation(s)
- Miroslav Blumenberg
- Departments of Dermatology and Biochemistry, and the NYU Cancer Institute, New York University School of Medicine, 550 First Avenue, New York, NY, 10016 USA, 212 263-5924
| | - Marjana Tomic-Canic
- Hospital for Special Surgery, Tissue Repair Lab, Tissue Engineering, Regeneration and Repair Program, 535 E 70 Street, New York, NY 10021 USA; Department of Dermatology, Weill Medical College of the Cornell University, 1300 York Avenue, New York, NY 10021, USA, 212 774-7160
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33
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Pavey S, Spoerri L, Haass NK, Gabrielli B. DNA repair and cell cycle checkpoint defects as drivers and therapeutic targets in melanoma. Pigment Cell Melanoma Res 2013; 26:805-16. [PMID: 23837768 DOI: 10.1111/pcmr.12136] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2013] [Accepted: 07/05/2013] [Indexed: 01/07/2023]
Abstract
The ultraviolet radiation (UVR) component of sunlight is the major environmental risk factor for melanoma, producing DNA lesions that can be mutagenic if not repaired. The high level of mutations in melanomas that have the signature of UVR-induced damage indicates that the normal mechanisms that detect and repair this damage must be defective in this system. With the exception of melanoma-prone heritable syndromes which have mutations of repair genes, there is little evidence for somatic mutation of known repair genes. Cell cycle checkpoint controls are tightly associated with repair mechanisms, arresting cells to allow for repair before continuing through the cell cycle. Checkpoint signaling components also regulate the repair mechanisms. Defects in checkpoint mechanisms have been identified in melanomas and are likely to be responsible for increased mutation load in melanoma. Loss of the checkpoint responses may also provide an opportunity to target melanomas using a synthetic lethal approach to identify and inhibit mechanisms that compensate for the defective checkpoints.
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Affiliation(s)
- Sandra Pavey
- The University of Queensland Diamantina Institute, Translational Research Institute, Brisbane, Qld, Australia
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34
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Bowden NA, Ashton KA, Vilain RE, Avery-Kiejda KA, Davey RJ, Murray HC, Budden T, Braye SG, Zhang XD, Hersey P, Scott RJ. Regulators of global genome repair do not respond to DNA damaging therapy but correlate with survival in melanoma. PLoS One 2013; 8:e70424. [PMID: 23940574 PMCID: PMC3734271 DOI: 10.1371/journal.pone.0070424] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2013] [Accepted: 06/18/2013] [Indexed: 01/03/2023] Open
Abstract
Nucleotide excision repair (NER) orchestrates the repair of helix distorting DNA damage, induced by both ultraviolet radiation (UVR) and cisplatin. There is evidence that the global genome repair (GGR) arm of NER is dysfunctional in melanoma and it is known to have limited induction in melanoma cell lines after cisplatin treatment. The aims of this study were to examine mRNA transcript levels of regulators of GGR and to investigate the downstream effect on global transcript expression in melanoma cell lines after cisplatin treatment and in melanoma tumours. The GGR regulators, BRCA1 and PCNA, were induced in melanocytes after cisplatin, but not in melanoma cell lines. Transcripts associated with BRCA1, BRCA2, ATM and CHEK2 showed altered expression in melanoma cell lines after cisplatin treatment. In melanoma tumour tissue BRCA1 transcript expression correlated with poor survival and XPB expression correlated with solar elastosis levels. Taken together, these findings provide evidence of the mechanisms underlying NER deficiency in melanoma.
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Affiliation(s)
- Nikola A Bowden
- School of Biomedical Sciences & Pharmacy, Faculty of Health, University of Newcastle, Australia and Hunter Medical Research Institute, Newcastle, NSW, Australia.
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35
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Reich A, Mędrek K. Effects of narrow band UVB (311 nm) irradiation on epidermal cells. Int J Mol Sci 2013; 14:8456-66. [PMID: 23594996 PMCID: PMC3645754 DOI: 10.3390/ijms14048456] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2013] [Revised: 04/09/2013] [Accepted: 04/09/2013] [Indexed: 01/02/2023] Open
Abstract
Ultraviolet radiation (UVR) is known to be one of the most important environmental hazards acting on the skin. It was revealed that chronic exposure to UVR accelerates skin aging, induces immunosuppression and may lead to the development of skin cancers. On the other hand, UVR has been shown to be effective in the treatment of numerous skin diseases and thus, various phototherapy modalities have been developed to date. Narrow-band ultraviolet B (NB-UVB) emitting a light with a peak around 311 nm has been demonstrated to be effective in the treatment of various skin disorders; currently it is one of the most commonly used phototherapy devices. Despite NB-UVB has been developed more than 30 years ago, the exact mechanism of its therapeutic action remains poorly understood. To date, most of NB-UVB effects were attributed to its influence on immune cells; however, nearly 90% of NB-UVB irradiation is absorbed by epidermis and keratinocytes seem to be important players in mediating NB-UVB biological activity. Here, we have reviewed the current data about the influence of NB-UVB on epidermal cells, with a special emphasis on cell proliferation and death.
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Affiliation(s)
- Adam Reich
- Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Chałubińskiego 1, Wrocław 50-368, Poland.
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36
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Hochberg M, Gilead L, Markel G, Nemlich Y, Feiler Y, Enk CD, Denichenko P, Karni R, Ingber A. Insulin-like growth factor-binding protein-7 (IGFBP7) transcript: A-to-I editing events in normal and cancerous human keratinocytes. Arch Dermatol Res 2013; 305:519-28. [PMID: 23543219 DOI: 10.1007/s00403-013-1338-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Revised: 03/03/2013] [Accepted: 03/18/2013] [Indexed: 12/20/2022]
Abstract
Non-melanoma skin cancers (NMSC) are the most common malignancies in caucasians worldwide. Insulin-like growth factor-binding protein-7 (IGFBP7) was suggested to function as a tumor suppressor gene in several cancers, and to play a role in the proliferation of keratinocytes. A-to-I RNA editing is a post-transcriptional mechanism frequently used to expand and diversify transcriptome and proteome repertoire in eukaryotic cells. A-to-I RNA editing can alter codons, substitute amino acids and affect protein sequence, structure, and function. Two editing sites were identified within the IGFBP7 transcript. To evaluate the expression and editing of IGFBP7 mRNA in NMSC compared to normal epidermis. We examined the expression and mRNA editing level of IGFBP7 in 22 basal cell carcinoma (BCC), 15 squamous cell carcinoma (SCC), and 18 normal epidermis samples that were surgically removed from patients by the Mohs Micrographic Surgery procedure. We studied the effect of IGFBP7 editing on an immortalized HaCaT keratinocyte cell model. IGFBP7 mRNA is over expressed in BCC and SCC compared to normal epidermis. Moreover, the IGFBP7 transcript is highly edited in normal epidermis, but its editing is significantly reduced in BCC and SCC. The edited form of IGFBP7 can inhibit proliferation and induce senescence in cultured keratinocytes. This study describes for the first time A-to-I editing in the coding sequence of a tumor suppressor gene in humans, and suggests that IGFBP7 editing serves as a fine-tuning mechanism to maintain the equilibrium between proliferation and senescence in normal skin.
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Affiliation(s)
- Malka Hochberg
- Department of Dermatology, Hadassah-Hebrew University Medical Center, P.O.Box 12000, 91010, Jerusalem, Israel.
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37
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UVB-induced melanocyte proliferation in neonatal mice driven by CCR2-independent recruitment of Ly6c(low)MHCII(hi) macrophages. J Invest Dermatol 2013; 133:1803-12. [PMID: 23321920 DOI: 10.1038/jid.2013.9] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Intermittent sunburns, particularly in childhood, are the strongest environmental risk factor for malignant melanoma (MM). In mice, a single neonatal UVR exposure induces MM, whereas chronic doses to adult mice do not. Neonatal UVR alters melanocyte migration dynamics by inducing their movement upward out of hair follicles into the epidermis. UVR is known to induce inflammation and recruitment of macrophages into the skin. In this study, we have used a liposomal clodronate strategy to deplete macrophages at the time of neonatal UVR, and have shown functionally that this reduces the melanocyte proliferative response. This effect was not reproduced by depletion of CD11c-expressing populations of dendritic cells. On the basis of epidermal expression array data at various time points after UVR, we selected mouse strains defective in various aspects of macrophage recruitment, activation, and effector functions, and measured their melanocyte UVR response. We identified Ly6c(low)MHCII(hi) macrophages as the major population promoting the melanocyte response across multiple strains. The activity of this subpopulation was CCR2 (C-C chemokine receptor type 2) independent and partly IL-17 dependent. By helping induce this effect, the infiltration of specific macrophage subpopulations after sunburn may be a factor in increasing the risk of subsequent neoplastic transformation of melanocytes.
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Blumenberg M. SKINOMICS: Transcriptional Profiling in Dermatology and Skin Biology. Curr Genomics 2012; 13:363-8. [PMID: 23372422 PMCID: PMC3401893 DOI: 10.2174/138920212801619241] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2012] [Revised: 05/29/2012] [Accepted: 05/29/2012] [Indexed: 01/08/2023] Open
Abstract
Recent years witnessed the birth of bioinformatics technologies, which greatly advanced biological research. These 'omics' technologies address comprehensively the entire genome, transcriptome, proteome, microbiome etc. A large impetus in development of bioinformatics was the introduction of DNA microarrays for transcriptional profiling. Because of its accessibility, skin was among the first organs analyzed using DNA microarrays, and dermatology among the first medical disciplines to embrace the approach. Here, DNA microarray methodologies and their application in dermatology and skin biology are reviewed. The most studied disease has been, unsurprisingly, melanoma; markers of melanoma progression, metastatic potential and even melanoma markers in blood have been detected. The basal and squamous cell carcinomas have also been intensely studied. Psoriasis has been comprehensively explored using DNA microarrays, transcriptional changes correlated with genomic markers and several signaling pathways important in psoriasis have been identified. Atopic dermatitis, wound healing, keloids etc. have been analyzed using microarrays. Noninvasive skin sampling for microarray studies has been developed. Simultaneously, epidermal keratinocytes have been the subject of many skin biology studies because they respond to a rich variety of inflammatory and immunomodulating cytokines, hormones, vitamins, UV light, toxins and physical injury. The transcriptional changes occurring during epidermal differentiation and cornification have been identified and characterized. Recent studies identified the genes specifically expressed in human epidermal stem cells. As dermatology advances toward personalized medicine, microarrays and related 'omics' techniques will be directly applicable to the personalized dermatology practice of the future.
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Affiliation(s)
- Miroslav Blumenberg
- The Departments of Dermatology, Biochemistry and Molecular Pharmacology, and the NYU Cancer Institute, NYU Langone Medical Center, New York, NY, USA
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Giles N, Pavey S, Pinder A, Gabrielli B. Multiple melanoma susceptibility factors function in an ultraviolet radiation response pathway in skin. Br J Dermatol 2011; 166:362-71. [DOI: 10.1111/j.1365-2133.2011.10635.x] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Kurdykowski S, Mine S, Bardey V, Danoux L, Jeanmaire C, Pauly G, Brabencova E, Wegrowski Y, Maquart FX. Ultraviolet-B irradiation induces epidermal up-regulation of heparanase expression and activity. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2011; 106:107-12. [PMID: 22119659 DOI: 10.1016/j.jphotobiol.2011.10.013] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2011] [Revised: 09/30/2011] [Accepted: 10/27/2011] [Indexed: 11/26/2022]
Abstract
Heparan sulfate (HS) glycosaminoglycans are abundant components of basement membranes and cell surfaces where they are present associated with specific core-proteins to form proteoglycans, mainly perlecan, glypicans and syndecans. They play many roles such as modulation of cell proliferation and differentiation, cell-matrix adhesion and assembly. It was previously shown that HS content decreases during skin aging. This decrease could be explained either by a decrease of HS synthesis or by an increased activity of its degrading enzyme, heparanase (Hpse-1). Since UV-B irradiation is one of the most important factor for skin photo-damage, we decided to study the effects of UV-B irradiation on heparanase expression and activity in human epidermal keratinocytes. Normal human keratinocytes and reconstructed epidermis were submitted to increasing doses of UV-B. HPSE1 mRNA levels were measured using real time PCR and heparanase enzymatic activity was quantified in human keratinocyte cultures using a microtiter-based assay. Expression and distribution of Hpse-1 were also studied in reconstructed epidermis by immunofluorescence. Both HPSE1 mRNA level and heparanase enzymatic activity were increased after UV-B irradiation of keratinocyte cultures in a time and dose-dependent manner. Protein expression of Hpse-1 was also up-regulated with increasing doses of UV-B in reconstructed epidermis. Increase of Hpse-1 expression and activity in the epidermis after UV-B irradiation could contribute to skin photo-aging.
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Affiliation(s)
- Sandrine Kurdykowski
- Université de Reims Champagne-Ardenne, Laboratoire de Biochimie Médicale et Biologie Moléculaire, CNRS UMR 6237, 51 rue Cognacq Jay, 51095 Reims cedex, France
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Kennedy-Crispin M, Billick E, Mitsui H, Gulati N, Fujita H, Gilleaudeau P, Sullivan-Whalen M, Johnson-Huang LM, Suárez-Fariñas M, Krueger JG. Human keratinocytes' response to injury upregulates CCL20 and other genes linking innate and adaptive immunity. J Invest Dermatol 2011; 132:105-13. [PMID: 21881590 PMCID: PMC3235229 DOI: 10.1038/jid.2011.262] [Citation(s) in RCA: 102] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
In the early stages of wound healing, keratinocytes become “activated” and release inflammatory molecules such as interleukin-1 and interleukin-8 that are linked to innate immune responses and neutrophil recruitment. It is unclear, however, whether keratinocytes release molecules linked to adaptive immune responses, e.g. CCL20, in their early state of activation without signals from infiltrating T cells. This study aims to isolate the immediate alterations in protective and inflammatory gene expression that occur in epidermal keratinocytes, with a particular focus on molecules associated with cell-mediated immunity. We used dispase-separated epidermis, followed by intercellular disassociation by trypsinization, as a model for epidermal injury. We obtained a pure population of keratinocytes using flow cytometry. As a control for uninjured epidermis, we performed laser capture microdissection on normal human skin. Sorted keratinocytes had an early burst of upregulated gene expression, which included CCL20, IL-15, IL-23A, IFN-κ, and several antimicrobial peptides. Our results provide insight into the potential role of keratinocytes as contributors to cell-mediated inflammation, and expand knowledge about gene modulation that occurs during early wound healing. Our findings may be relevant to cutaneous diseases such as psoriasis, where micro-injury can trigger the formation of psoriatic plaques at the site of trauma.
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Affiliation(s)
- Milène Kennedy-Crispin
- Laboratory for Investigative Dermatology, Rockefeller University, New York, New York 10065-6399, USA
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Kurdykowski S, Mine S, Bardey V, Danoux L, Jeanmaire C, Pauly G, Brabencova E, Wegrowski Y, Maquart FX. Ultraviolet-B irradiation induces differential regulations of hyaluronidase expression and activity in normal human keratinocytes. Photochem Photobiol 2011; 87:1105-12. [PMID: 21699545 DOI: 10.1111/j.1751-1097.2011.00959.x] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Skin aging is a complex process determined by genetic factors (intrinsic aging) and environmental factors (extrinsic aging). One of the most influential environmental factor is UV-B irradiation. Hyaluronic acid (HA) is an abundant component of skin extracellular matrix where it plays many roles such as hydration and architectural support. Downregulation of HA during photoaging was reported previously. Changes in expression and function of its degrading enzymes, the hyaluronidases (Hyals) might be involved in this decrease. In the present study, normal human keratinocytes were submitted to increasing doses of UV-B. The mRNA expression of HYAL1, HYAL2 and HYAL3 and the hyaluronidase enzymatic activity were quantified using real-time PCR and a microtiter-based assay, respectively. After UV-B irradiation, HYAL1 mRNA expression was upregulated whereas HYAL2 and HYAL3 mRNAs were downregulated and hyaluronidase enzymatic activity was increased in both cell layer and culture medium. In parallel, immunohistochemical studies performed on UV-B irradiated reconstructed epidermis confirmed that Hyal-1, Hyal-2 and Hyal-3 protein expression were differently regulated by UV-B. Taken together, our results demonstrate that UV-B irradiation induces differential regulations of hyaluronidase expression and enzymatic activity in human keratinocytes. These differential modulations of hyaluronidase expression and activity by UV-B could contribute to cutaneous photoaging.
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Affiliation(s)
- Sandrine Kurdykowski
- Laboratoire de Biochimie Médicale et Biologie Moléculaire, CNRS UMR 6237, Université de Reims Champagne-Ardenne, Reims, France
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Schanab O, Humer J, Gleiss A, Mikula M, Sturlan S, Grunt S, Okamoto I, Muster T, Pehamberger H, Waltenberger A. Expression of human endogenous retrovirus K is stimulated by ultraviolet radiation in melanoma. Pigment Cell Melanoma Res 2011; 24:656-65. [PMID: 21501418 DOI: 10.1111/j.1755-148x.2011.00860.x] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Human endogenous retroviruses (HERVs) represent a cellular reservoir of potentially pathogenic retroviral genes. A growing body of evidence indicates that the activation of endogenous retroviral sequences might be involved in the transformation of melanocytes. In this study, we investigated the effects of ultraviolet radiation (UVR) on the expression of human endogenous retrovirus type K (HERV-K) in melanoma cells and non-melanoma cells in vitro. Solely in melanoma cell lines, irradiation with UVB (200 mJ/cm(2)) resulted in a significant transcriptional activation of the retroviral pol gene as well as in an enhanced expression of the retroviral envelope protein (env). In addition, UVB treatment induced the production of retroviral particles in the supernatants of melanoma cell lines. These data indicate that HERV-K expression can be activated by UVB irradiation and suggest an involvement of HERV-K in UVR-related melanoma pathogenesis.
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Affiliation(s)
- Oliver Schanab
- Department of Dermatology, Division of General Dermatology, Medical University Vienna, Waehringer Guertel, Vienna, Austria.
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Benton MA, Rager JE, Smeester L, Fry RC. Comparative genomic analyses identify common molecular pathways modulated upon exposure to low doses of arsenic and cadmium. BMC Genomics 2011; 12:173. [PMID: 21457566 PMCID: PMC3082247 DOI: 10.1186/1471-2164-12-173] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2010] [Accepted: 04/01/2011] [Indexed: 01/25/2023] Open
Abstract
BACKGROUND Exposure to the toxic metals arsenic and cadmium is associated with detrimental health effects including cancers of various organs. While arsenic and cadmium are well known to cause adverse health effects at high doses, the molecular impact resulting from exposure to environmentally relevant doses of these metals remains largely unexplored. RESULTS In this study, we examined the effects of in vitro exposure to either arsenic or cadmium in human TK6 lymphoblastoid cells using genomics and systems level pathway mapping approaches. A total of 167 genes with differential expression were identified following exposure to either metal with surprisingly no overlap between the two. Real-time PCR was used to confirm target gene expression changes. The gene sets were overlaid onto protein-protein interaction maps to identify metal-induced transcriptional networks. Interestingly, both metal-induced networks were significantly enriched for proteins involved in common biological processes such as tumorigenesis, inflammation, and cell signaling. These findings were further supported by gene set enrichment analysis. CONCLUSIONS This study is the first to compare the transcriptional responses induced by low dose exposure to cadmium and arsenic in human lymphoblastoid cells. These results highlight that even at low levels of exposure both metals can dramatically influence the expression of important cellular pathways.
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Affiliation(s)
- Margaret Ann Benton
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - Julia E Rager
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - Lisa Smeester
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
| | - Rebecca C Fry
- Department of Environmental Sciences and Engineering, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC, USA
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Rácz E, Prens EP, Kurek D, Kant M, de Ridder D, Mourits S, Baerveldt EM, Ozgur Z, van IJcken WFJ, Laman JD, Staal FJ, van der Fits L. Effective treatment of psoriasis with narrow-band UVB phototherapy is linked to suppression of the IFN and Th17 pathways. J Invest Dermatol 2011; 131:1547-58. [PMID: 21412260 DOI: 10.1038/jid.2011.53] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Narrow-band ultraviolet-B (NB-UVB) phototherapy is an effective treatment for psoriasis. The molecular mechanisms underlying its efficacy are incompletely understood. To identify NB-UVB-induced molecular pathways that may account for its anti-inflammatory efficacy, gene expression profiling was performed using epidermal RNA from lesional and nonlesional skin from patients with psoriasis undergoing NB-UVB therapy. Downregulation of Th17 signaling pathway was observed during NB-UVB therapy in psoriatic epidermis. Strong inhibition of the Th17 pathway by UVB was confirmed in an ex vivo organ culture system by demonstrating reduced signal transducer and activator of transcription 3 (STAT3) phosphorylation and β-defensin-2 production. These results were further substantiated by demonstrating that NB-UVB inhibited the Th17-dependent psoriasis-like dermatitis in mice. Other pathways affected by NB-UVB therapy include the IFN signaling pathway, epidermal differentiation, and other well-known therapeutic targets in psoriasis, such as the glucocorticoid, vitamin D, peroxisome proliferator-activated receptor, and IL-4 signaling pathways. In conclusion, clinical improvement of psoriasis by NB-UVB is linked to suppression of Th17 and type I and type II IFN signaling pathways, which are critical in the pathogenesis of the disease. Our results show that clinically effective NB-UVB therapy is based on suppression of a broad range of important molecular pathways in psoriatic skin.
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Affiliation(s)
- Emoke Rácz
- Department of Dermatology, Erasmus MC, University Medical Center, Rotterdam, The Netherlands.
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Yan Y, Xu H, Peng S, Zhao W, Wang B. Proteome analysis of ultraviolet-B-induced protein expression in vitro human dermal fibroblasts. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2011; 26:318-26. [PMID: 21091790 DOI: 10.1111/j.1600-0781.2010.00556.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
BACKGROUND Ultraviolet-B (UVB) radiation can result in acute photodamage, photoaging and skin cancer through the induction of reactive oxygen species, DNA damage, activation of signaling pathways, and regulation of gene expression. In this study, we investigated UVB-induced alterations in protein expression in human dermal fibroblasts. METHODS Skin fibroblasts were irradiated with 100 mJ/cm² UVB, and cell viability was monitored by the 3-(4,5)-dimethylthiahiazo(-z-y1)-3,5-diphenytetrazoliumromide assay. Two-dimensional gel electrophoresis and matrix-assisted laser desorption/ionization time of flight mass spectroscopy were used to identify differentially expressed proteins. The mRNA and levels of identified proteins were detected using a quantitative real-time polymerase chain reaction assay and Western blot. RESULTS UVB decreased the viability of skin fibroblasts. In UVB-treated cells, eighteen differentially expressed proteins were identified. Among these proteins, the amounts of receptor-interacting protein (RIP) and vimentin were significantly up-regulated. However, their mRNA levels decreased and remained relatively stable, respectively. CONCLUSIONS The differential expression of RIP and vimentin was validated in UVB-irradiated fibroblasts. RIP may promote cell injury, and vimentin may contribute to the resistance of cells to UVB-induced damage.
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Affiliation(s)
- Yan Yan
- Department of Dermatology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing, China
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Mouchet N, Adamski H, Bouvet R, Corre S, Courbebaisse Y, Watier E, Mosser J, Chesné C, Galibert MD. In vivo identification of solar radiation-responsive gene network: role of the p38 stress-dependent kinase. PLoS One 2010; 5:e10776. [PMID: 20505830 PMCID: PMC2874014 DOI: 10.1371/journal.pone.0010776] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2010] [Accepted: 05/04/2010] [Indexed: 02/03/2023] Open
Abstract
Solar radiation is one of the most common threats to the skin, with exposure eliciting a specific protective cellular response. To decrypt the underlying mechanism, we used whole genome microarrays (Agilent 44K) to study epidermis gene expression in vivo in skin exposed to simulated solar radiation (SSR). We procured epidermis samples from healthy Caucasian patients, with phototypes II or III, and used two different SSR doses (2 and 4 J/cm(2)), the lower of which corresponded to the minimal erythemal dose. Analyses were carried out five hours after irradiation to identify early gene expression events in the photoprotective response. About 1.5% of genes from the human genome showed significant changes in gene expression. The annotations of these affected genes were assessed. They indicated a strengthening of the inflammation process and up-regulation of the JAK-STAT pathway and other pathways. Parallel to the p53 pathway, the p38 stress-responsive pathway was affected, supporting and mediating p53 function. We used an ex vivo assay with a specific inhibitor of p38 (SB203580) to investigate genes the expression of which was associated with active p38 kinase. We identified new direct p38 target genes and further characterized the role of p38. Our findings provide further insight into the physiological response to UV, including cell-cell interactions and cross-talk effects.
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Affiliation(s)
- Nicolas Mouchet
- CNRS UMR 6061 Institut de Génétique et Développement de Rennes, Equipe RTO, Rennes, France
- Université de Rennes 1, IFR140 GFAS, Faculté de Médecine, Rennes, France
- PROCLAIM, Saint Grégoire, France
| | | | - Régis Bouvet
- CHU Rennes, Laboratoire de Génomique Médicale, Plateforme Transcriptomique GenOuest, Rennes, France
| | - Sébastien Corre
- CNRS UMR 6061 Institut de Génétique et Développement de Rennes, Equipe RTO, Rennes, France
- Université de Rennes 1, IFR140 GFAS, Faculté de Médecine, Rennes, France
| | | | - Eric Watier
- CHU Rennes, Service de Chirurgie Plastique, Rennes, France
| | - Jean Mosser
- CHU Rennes, Laboratoire de Génomique Médicale, Plateforme Transcriptomique GenOuest, Rennes, France
| | | | - Marie-Dominique Galibert
- CNRS UMR 6061 Institut de Génétique et Développement de Rennes, Equipe RTO, Rennes, France
- Université de Rennes 1, IFR140 GFAS, Faculté de Médecine, Rennes, France
- CHU Rennes, Laboratoire de Génomique Médicale, Plateforme Transcriptomique GenOuest, Rennes, France
- * E-mail:
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Mainster MA, Turner PL. Ultraviolet-B phototoxicity and hypothetical photomelanomagenesis: intraocular and crystalline lens photoprotection. Am J Ophthalmol 2010; 149:543-9. [PMID: 20346776 DOI: 10.1016/j.ajo.2009.11.028] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2009] [Revised: 11/23/2009] [Accepted: 11/25/2009] [Indexed: 12/24/2022]
Abstract
PURPOSE Ultraviolet-B (UV-B) radiation can cause phototoxic macular injuries in young people who have been sunbathing but not sungazing and in welders. Welders have a reportedly increased risk of uveal melanoma. We analyze phakic and pseudophakic risks for solar and welding arc UV-B exposure. DESIGN Optical radiation measurement, analysis, and perspective. METHODS Spectral transmittances were measured for UV-transmitting, UV-blocking, and blue-blocking intraocular lenses (IOLs). The photoprotective performances of crystalline and intraocular lenses were analyzed using relevant epidemiologic and laboratory data and action spectra for acute retinal phototoxicity and melanoma photocarcinogenesis. RESULTS Crystalline lens UV-B retinal protection is deficient in children and young adults, increasing their potential susceptibility to acute retinal phototoxicity and hypothetical photomelanomagenesis. UV-B radiation has sufficient energy/photon to induce primary melanomagenic DNA lesions, unlike blue light or UV-A radiation. UV-blocking and blue-blocking IOLs have negligible UV-B transmittance. UV-transmitting IOL transmittance of UV-B radiation is equivalent to that of a 15-year-old crystalline lens. CONCLUSIONS If optical radiation exposure is responsible for welders' increased risk of uveal melanoma, then UV-B radiation is the most probable causative agent and spectacle wear is a potential confounding factor in epidemiologic studies of ocular melanoma. Welders under 30 years of age are at greater risk for welding maculopathy than older welders. Children, adults under 30 years of age, and pseudophakic individuals with UV-transmitting IOLs should wear sunglasses in bright environments because of the UV-B window in their crystalline lenses or IOLs.
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Affiliation(s)
- Martin A Mainster
- University of Kansas School of Medicine, Prairie Village, KS 66208-3444, USA.
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Calles C, Schneider M, Macaluso F, Benesova T, Krutmann J, Schroeder P. Infrared A radiation influences the skin fibroblast transcriptome: mechanisms and consequences. J Invest Dermatol 2010; 130:1524-36. [PMID: 20130591 DOI: 10.1038/jid.2010.9] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Infrared A (IRA) radiation (760-1440 nm) is a major component of solar radiation and, similar to UVR, causes photoaging of human skin by increasing the expression of matrix metalloproteinase-1 in human skin fibroblasts. In this study, we assessed the IRA-induced transcriptome in primary human skin fibroblasts. Microarray analysis revealed 599 IRA-regulated transcripts. The IRA-induced transcriptome differed from changes known to be induced by UV. IRA-responsive genes include the categories extracellular matrix, calcium homeostasis, stress signaling, and apoptosis. Selected results were confirmed by real-time PCR experiments analyzing 13 genes representing these four categories. By means of chemical inhibitors of known signaling pathways, we showed that ERK1/2, the p38-, JNK-, PI3K/AKT-, STAT3-, and IL-6 as well as the calcium-mediated signaling pathways, are functionally involved in the IRA gene response and that a major part of it is triggered by mitochondrial and, to a lesser extent, non-mitochondrial production of reactive oxygen species. Our results identify IRA as an environmental factor with relevance for skin homeostasis and photoaging.
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Affiliation(s)
- Christian Calles
- Institut fuer Umweltmedizinische Forschung (IUF), Cell Biology/Molecular Aging Research, Auf'm Hennekamp 50, Duesseldorf, Germany
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Mainster MA, Turner PL. Blue-blocking IOLs decrease photoreception without providing significant photoprotection. Surv Ophthalmol 2009; 55:272-89. [PMID: 19883931 DOI: 10.1016/j.survophthal.2009.07.006] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2009] [Revised: 07/16/2009] [Accepted: 07/31/2009] [Indexed: 12/22/2022]
Abstract
Violet and blue light are responsible for 45% of scotopic, 67% of melanopsin, 83% of human circadian (melatonin suppression) and 94% of S-cone photoreception in pseudophakic eyes (isoilluminance source). Yellow chromophores in blue-blocking intraocular lenses (IOLs) eliminate between 43 and 57% of violet and blue light between 400 and 500 nm, depending on their dioptric power. This restriction adversely affects pseudophakic photopic luminance contrast, photopic S-cone foveal threshold, mesopic contrast acuity, scotopic short-wavelength sensitivity and circadian photoreception. Yellow IOL chromophores provide no tangible clinical benefits in exchange for the photoreception losses they cause. They fail to decrease disability glare or improve contrast sensitivity. Most epidemiological evidence shows that environmental light exposure and cataract surgery are not significant risk factors for the progression of age-related macular degeneration (AMD). Thus, the use of blue-blocking IOLs is not evidence-based medicine. Most AMD occurs in phakic adults over 60 years of age, despite crystalline lens photoprotection far greater than that of blue-blocking IOLs. Therefore, if light does play some role in the pathogenesis of AMD, then 1) senescent crystalline lenses do not prevent it, so neither can blue-blocking IOLs that offer far less photoprotection, and 2) all pseudophakes should wear sunglasses in bright environments. Pseudophakes have the freedom to remove their sunglasses for optimal photoreception whenever they choose to do so, provided that they are not encumbered permanently by yellow IOL chromophores. In essence, yellow chromophores are placebos for prevention of AMD that permanently restrict a pseudophake's dim light and circadian photoreception at ages when they are needed most. If yellow IOLs had been the standard of care, then colorless UV-blocking IOLs could be advocated now as "premium" IOLs because they offer dim light and circadian photoreception roughly 15-20 years more youthful than blue-blocking IOLs.
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Affiliation(s)
- Martin A Mainster
- Department of Ophthalmology, University of Kansas School of Medicine, Prairie Village, Kansas, USA.
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