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Görlitz M, Justen L, Rochette PJ, Buonanno M, Welch D, Kleiman NJ, Eadie E, Kaidzu S, Bradshaw WJ, Javorsky E, Cridland N, Galor A, Guttmann M, Meinke MC, Schleusener J, Jensen P, Söderberg P, Yamano N, Nishigori C, O'Mahoney P, Manstein D, Croft R, Cole C, de Gruijl FR, Forbes PD, Trokel S, Marshall J, Brenner DJ, Sliney D, Esvelt K. Assessing the safety of new germicidal far-UVC technologies. Photochem Photobiol 2024; 100:501-520. [PMID: 37929787 DOI: 10.1111/php.13866] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Revised: 09/28/2023] [Accepted: 09/29/2023] [Indexed: 11/07/2023]
Abstract
The COVID-19 pandemic underscored the crucial importance of enhanced indoor air quality control measures to mitigate the spread of respiratory pathogens. Far-UVC is a type of germicidal ultraviolet technology, with wavelengths between 200 and 235 nm, that has emerged as a highly promising approach for indoor air disinfection. Due to its enhanced safety compared to conventional 254 nm upper-room germicidal systems, far-UVC allows for whole-room direct exposure of occupied spaces, potentially offering greater efficacy, since the total room air is constantly treated. While current evidence supports using far-UVC systems within existing guidelines, understanding the upper safety limit is critical to maximizing its effectiveness, particularly for the acute phase of a pandemic or epidemic when greater protection may be needed. This review article summarizes the substantial present knowledge on far-UVC safety regarding skin and eye exposure and highlights research priorities to discern the maximum exposure levels that avoid adverse effects. We advocate for comprehensive safety studies that explore potential mechanisms of harm, generate action spectra for crucial biological effects and conduct high-dose, long-term exposure trials. Such rigorous scientific investigation will be key to determining safe and effective levels for far-UVC deployment in indoor environments, contributing significantly to future pandemic preparedness and response.
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Affiliation(s)
- Maximilian Görlitz
- Massachusetts Institute of Technology, Media Lab, Cambridge, Massachusetts, USA
- SecureBio, Inc., Cambridge, Massachusetts, USA
| | - Lennart Justen
- Massachusetts Institute of Technology, Media Lab, Cambridge, Massachusetts, USA
- SecureBio, Inc., Cambridge, Massachusetts, USA
| | - Patrick J Rochette
- Centre de recherche du CHU de Québec-Université Laval, Axe Médecine Régénératrice Quebec, Quebec City, Quebec, Canada
| | - Manuela Buonanno
- Center for Radiological Research, Columbia University Medical Center, New York City, New York, USA
| | - David Welch
- Center for Radiological Research, Columbia University Medical Center, New York City, New York, USA
| | - Norman J Kleiman
- Department of Environmental Health Sciences, Mailman School of Public Health, Columbia University, New York City, New York, USA
| | - Ewan Eadie
- Photobiology Unit, Ninewells Hospital, Dundee, UK
| | - Sachiko Kaidzu
- Department of Ophthalmology, Shimane University Faculty of Medicine, Izumo, Japan
| | - William J Bradshaw
- Massachusetts Institute of Technology, Media Lab, Cambridge, Massachusetts, USA
- SecureBio, Inc., Cambridge, Massachusetts, USA
| | - Emilia Javorsky
- Wyss Institute for Biologically Inspired Engineering at Harvard University, Boston, Massachusetts, USA
- Future of Life Institute, Cambridge, Massachusetts, USA
| | - Nigel Cridland
- Radiation, Chemicals and Environment Directorate, UK Health Security Agency, Didcot, UK
| | - Anat Galor
- Miami Veterans Affairs Medical Center, University of Miami Health System Bascom Palmer Eye Institute, Miami, Florida, USA
| | | | - Martina C Meinke
- Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Johannes Schleusener
- Department of Dermatology, Venerology and Allergology, Center of Experimental and Applied Cutaneous Physiology, Charité-Universitätsmedizin Berlin, Berlin, Germany
| | - Paul Jensen
- Final Approach Inc., Port Orange, Florida, USA
| | - Per Söderberg
- Ophthalmology, Department of Surgical Sciences, Uppsala Universitet, Uppsala, Sweden
| | - Nozomi Yamano
- Division of Dermatology, Department of Internal Related, Kobe University, Kobe, Japan
| | - Chikako Nishigori
- Division of Dermatology, Department of Internal Related, Kobe University, Kobe, Japan
- Japanese Red Cross Hyogo Blood Center, Kobe, Japan
| | - Paul O'Mahoney
- Optical Radiation Effects, UK Health Security Agency, Chilton, UK
| | - Dieter Manstein
- Department of Dermatology, Cutaneous Biology Research Center, Harvard Medical School, Massachusetts General Hospital, Boston, Massachusetts, USA
| | - Rodney Croft
- International Commission on Non-Ionizing Radiation Protection (ICNIRP), Chair, Wollongong, New South Wales, Australia
- University of Wollongong, Wollongong, New South Wales, Australia
| | - Curtis Cole
- Sun & Skin Consulting LLC, New Holland, Pennsylvania, USA
| | - Frank R de Gruijl
- Department of Dermatology, Universiteit Leiden, Leiden, South Holland, The Netherlands
| | | | - Stephen Trokel
- Department of Ophthalmology, Columbia University Vagelos College of Physicians and Surgeons, New York City, New York, USA
| | - John Marshall
- Institute of Ophthalmology, University College London, London, UK
| | - David J Brenner
- Center for Radiological Research, Columbia University Medical Center, New York City, New York, USA
| | - David Sliney
- IES Photobiology Committee, Chair, Fallston, Maryland, USA
- Consulting Medical Physicist, Fallston, Maryland, USA
| | - Kevin Esvelt
- Massachusetts Institute of Technology, Media Lab, Cambridge, Massachusetts, USA
- SecureBio, Inc., Cambridge, Massachusetts, USA
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Bellary IR, Prabhu VD, Jose M, Abdulla R, Shetty UA. The adverse effects of mining pollutants on oral mucosa in Bellary district: A clinical and genotoxicity study. J Oral Maxillofac Pathol 2024; 28:90-95. [PMID: 38800431 PMCID: PMC11126253 DOI: 10.4103/jomfp.jomfp_414_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2023] [Accepted: 11/09/2023] [Indexed: 05/29/2024] Open
Abstract
Background The Bellary district in Karnataka, rich in mineral resources, is a major mining industry, but prolonged exposure to mining can lead to health hazards. The study aims to assess the genotoxic impact of mining pollutants on mine workers using the micro-nucleus (MN) assay. Setting and Design Cross-sectional study. Materials and Methods A total of 250 individuals (198 males and 52 females) working in mining areas were examined, and their oral findings were recorded in a proforma. For the micro-nucleus assay, buccal smears from 30 individuals working in mining areas with habits, 30 individuals working in mining areas without habits, and 30 individuals residing in non-mining areas (control group) were selected. Smears were stained with Giemsa stain to identity and quantify the MNs. Results The frequency of oral mucosal problems among 250 persons working in mining regions was 170 (68.0%) with no oral mucosal conditions, 79 (32.6%) with oral mucosal conditions, 25 (10%) with leukoplakia, 1 (0.4%) with lichen planus, and 8 (3.2%) with ulcerations. Acute necrotising gingivitis was reported in one person (0.4%), candidiasis in two (0.8%), abscess in two (0.8%), OSMF in 39 (15.6%), and oral cancer in two (0.8%). The mean MN count was 2.40 + 1.57 in mine employees with habits, 2.18 + 1.25 in mine workers without habits, and 1.40 + 0.55 in normal healthy controls. Conclusion Reduced occupational health risks brought on by exposure to mining contaminants require protective measures. After being exposed to mining pollutants, exfoliated buccal mucosal cells can be examined for genotoxicity.
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Affiliation(s)
- Indushekar R. Bellary
- Consultant Oral and Maxillofacial Pathologist, Rajarajeshwari ENT, Eye and Dental Hospital, Gadag, Karnataka, India
| | - Vishnu D. Prabhu
- Department of Oral and Maxillofacial Pathology, Yenepoya Dental College, Deralakatte, Karnataka, India
| | - Maji Jose
- Department of Oral and Maxillofacial Pathology, Dean (Student Affairs) and Professor of Oral Pathology, Yenepoya (Deemed to be University), Deralakatte, Karnataka, India
| | - Riaz Abdulla
- Department of Oral and Maxillofacial Pathology, Yenepoya Dental College, Deralakatte, Karnataka, India
| | - Urvashi A. Shetty
- Department of Oral and Maxillofacial Pathology, AB Shetty Memorial Institute of Dental Sciences, Nitte Deemed to be University, Mangalore, Karnataka, India
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Montero P, Roger I, Milara J, Cortijo J. Damaging effects of UVA, blue light, and infrared radiation: in vitro assessment on a reconstructed full-thickness human skin. Front Med (Lausanne) 2023; 10:1267409. [PMID: 38105899 PMCID: PMC10722227 DOI: 10.3389/fmed.2023.1267409] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2023] [Accepted: 11/07/2023] [Indexed: 12/19/2023] Open
Abstract
Introduction Exposure to solar radiation can cause a range of skin damage, including sunburn, erythema, skin carcinogenesis, the release of reactive oxygen species (ROS), inflammation, DNA damage, and photoaging. Other wavelengths beyond UVB, such as UVA, blue light, and infrared radiation, can also contribute to the harmful effects of solar radiation. Reconstructed full-thickness human skin has the potential to serve as effective predictive in vitro tools for evaluating the effects of solar radiation on the skin. The aim of this work was to evaluate the damaging effects of UVA, blue light, and infrared radiation in a full-thickness skin model in terms of viability, inflammation, photoaging, tissue damage, photocarcinogenesis. Methods Full thickness skin models were purchased from Henkel (Phenion FT; Düsseldorf, Germany), and irradiated with increasing doses of UVA, blue light, or infrared radiation. Different endpoints were analyzed on the tissues: Hematoxylin-eosin staining, inflammation mediators, photoaging-related dermal markers and oxidative stress marker GPX1, evaluated by real-time quantitative PCR, as well as photocarcinogenesis markers by Western Blot. Results and Discussion The results showed differential responses in cytokine release for each light source. In terms of photoaging biomarkers, collagen, metalloproteinases 1 and 9, elastin, and decorin were modulated by UVA and blue light exposure, while not all these markers were affected by infrared radiation. Furthermore, exposure to UVA and blue light induced loss of fibroblasts and modulation of the photocarcinogenesis markers p53 and p21. In conclusion, the presented results suggest that the various wavelengths of solar light have distinct and differential damaging effects on the skin. Understanding the differential effects of UVA, blue light, and infrared radiation can serve as a valuable tool to investigate the efficacy of photoprotective agents in full thickness skin models.
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Affiliation(s)
- Paula Montero
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain
- Faculty of Health Sciences, Universidad Europea de Valencia, Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, Madrid, Spain
| | - Inés Roger
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain
- Faculty of Health Sciences, Universidad Europea de Valencia, Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, Madrid, Spain
| | - Javier Milara
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, Madrid, Spain
- Pharmacy Unit, University General Hospital Consortium, Valencia, Spain
| | - Julio Cortijo
- Department of Pharmacology, Faculty of Medicine, University of Valencia, Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, Madrid, Spain
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Montero P, Villarroel MJ, Roger I, Morell A, Milara J, Cortijo J. Obacunone Photoprotective Effects against Solar-Simulated Radiation-Induced Molecular Modifications in Primary Keratinocytes and Full-Thickness Human Skin. Int J Mol Sci 2023; 24:11484. [PMID: 37511243 PMCID: PMC10380981 DOI: 10.3390/ijms241411484] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2023] [Revised: 07/06/2023] [Accepted: 07/12/2023] [Indexed: 07/30/2023] Open
Abstract
Solar radiation can cause damage to the skin, leading to various adverse effects such as sunburn, reactive oxygen species production, inflammation, DNA damage, and photoaging. To study the potential of photoprotective agents, full-thickness skin models are increasingly being used as in vitro tools. One promising approach to photoprotection involves targeting the redox-sensitive transcription factor Nrf2, which is responsible for regulating various cellular defense mechanisms, including the antioxidant response, inflammatory signaling, and DNA repair. Obacunone, a natural triterpenoid, has been identified as a potent Nrf2 agonist. The present study aims to evaluate the relevance of full-thickness (FT) skin models in photoprotection studies and to explore the potential photoprotective effects of obacunone on those models and in human keratinocytes. Phenion® full-thickness skin models and keratinocytes were incubated with increasing concentrations of obacunone and irradiated with solar-simulated radiation (SSR). Various photodamage markers were evaluated, including histological integrity, oxidative stress, apoptosis, inflammation, photoaging-related dermal markers, and photocarcinogenesis markers. Increasing doses of SSR were found to modulate various biomarkers related to sun damage in the FT skin models. However, obacunone attenuated cytotoxicity, inflammation, oxidative stress, sunburn reaction, photoaging, and photocarcinogenesis in both keratinocytes and full thickness skin models exposed to SSR. These results suggest that obacunone may have potential as a photoprotective agent for preventing the harmful effects of solar radiation on the skin.
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Affiliation(s)
- Paula Montero
- Department of Pharmacology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
- Faculty of Health Sciences, Universidad Europea de Valencia, 46185 Valencia, Spain
| | - Maria José Villarroel
- Department of Functional Biology and Physical Anthropology, Faculty of Biological Sciences, University of Valencia, 46010 Valencia, Spain
| | - Inés Roger
- Department of Pharmacology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
- Faculty of Health Sciences, Universidad Europea de Valencia, 46185 Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, 28029 Madrid, Spain
| | - Anselm Morell
- Department of Biochemical Sciences, Faculty of Pharmacy, Charles University, 50005 Hradec Králové, Czech Republic
| | - Javier Milara
- Department of Pharmacology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, 28029 Madrid, Spain
- Pharmacy Unit, University General Hospital Consortium, 46014 Valencia, Spain
| | - Julio Cortijo
- Department of Pharmacology, Faculty of Medicine, University of Valencia, 46010 Valencia, Spain
- Biomedical Research Networking Centre on Respiratory Diseases (CIBERES), Health Institute Carlos III, 28029 Madrid, Spain
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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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Arya A, Gangwar A, Singh SK, Bhargava K. Polyethylene glycol functionalized cerium oxide nanoparticle confer protection against UV- induced oxidative damage in skin: evidences for a new class of UV filter. NANO EXPRESS 2020. [DOI: 10.1088/2632-959x/ab934c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Abstract
Acute exposure to high dose of ultraviolet (UV) radiations is known to cause significant harm to skin, primarily due to the generation of free radicals and damage to DNA, which often culminate in rapid aging of the skin, or cancers. Keratinocytes being the most abundant skin’s cells are affected most by UV. Although a degree of endogenous protection is present, the vulnerability of UV-induced damaged can be minimized using protective agents. A few UV filters (organic and inorganic) have been successfully commercialized, yet, due to prevailing disadvantages such as low solubility, photostability, and aesthetic sense, suitable and more efficient UV filters continue to be explored as potential ingredients of cosmaceutical agents. A recently studied antioxidant enzyme mimetic cerium oxide nanoparticles showed emerging piece of evidence on benefits under environmental stress. However, its protective abilities as potential UV filter and therefore applicability in cosmaceutical has not yet been completely explored. This study provides a piece of evidence in support of beneficial effects of this new class of UV filters, polyethyleneglycol functionalized nanoceria (PEG-CNP) against UV - induced damage in vitro and in vivo. The nanomolar concentration of PEG-CNPs in the cell culture showed significant protection from UV exposure, by direct ROS scavenging, the rescue of cells from cell cycle arrest and DNA damage. Further, a proof of the concept study in dehaired rat skin showed that the topical application of 50 μM PEG-CNPs prevented the initial signs of UV induced damage. Unlike conventional UV filters, PEG-CNPs confer protection by internalizing the cells, and scavenging the radicals.
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Goyer B, Pereira U, Magne B, Larouche D, Kearns-Turcotte S, Rochette PJ, Martin L, Germain L. Impact of ultraviolet radiation on dermal and epidermal DNA damage in a human pigmented bilayered skin substitute. J Tissue Eng Regen Med 2019; 13:2300-2311. [PMID: 31502756 DOI: 10.1002/term.2959] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 08/08/2019] [Accepted: 09/04/2019] [Indexed: 12/18/2022]
Abstract
Our laboratory has developed a scaffold-free cell-based method of tissue engineering to produce bilayered tissue-engineered skin substitutes (TESs) from epidermal and dermal cells. However, TES pigmentation is absent or heterogeneous after grafting, due to a suboptimal number of melanocytes in culture. Our objectives were to produce TESs with a sufficient quantity of melanocytes from different pigmentation phototypes (light and dark) to achieve a homogeneous color and to evaluate whether the resulting pigmentation was photoprotective against ultraviolet radiation (UVR)-induced DNA damage in the dermis and the epidermis. TESs were cultured using different concentrations of melanocytes (100, 200, and 1,500 melanocytes/mm2 ), and pigmentation was evaluated in vitro and after grafting onto an athymic mouse excisional model. Dermal and epidermal DNA damage was next studied, exposing pigmented TESs to 13 and 32.5 J/cm2 UVR in vitro. We observed that melanocyte cell density increased with culture time until reaching a plateau corresponding to the cell distribution of native skin. Pigmentation of melanocyte-containing TESs was similar to donor skin, with visible melanin transfer from melanocytes to keratinocytes. The amount of melanin in TESs was inversely correlated to the UVR-induced formation of cyclobutane pyrimidine dimer in dermal fibroblasts and keratinocytes. Our results indicate that the pigmentation conferred by the addition of melanocytes in TESs protects against UVR-induced DNA damage. Therefore, autologous pigmented TESs could ensure photoprotection after grafting.
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Affiliation(s)
- Benjamin Goyer
- Centre de recherche du CHU de Québec, Université Laval and Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Département de chirurgie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Ulysse Pereira
- Centre de recherche du CHU de Québec, Université Laval and Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Département de chirurgie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Brice Magne
- Centre de recherche du CHU de Québec, Université Laval and Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Département de chirurgie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Danielle Larouche
- Centre de recherche du CHU de Québec, Université Laval and Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Département de chirurgie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Sélia Kearns-Turcotte
- Centre de recherche du CHU de Québec, Université Laval and Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Département de chirurgie, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Patrick J Rochette
- Centre de recherche du CHU de Québec, Université Laval and Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Département d'ophtalmologie et d'oto-rhino-laryngologie - chirurgie cervico-faciale, Faculté de médecine, Université Laval, Québec, QC, Canada
| | - Ludovic Martin
- Service de Dermatologie, CHU d'Angers, et Institut MitoVasc (UMR INSERM 1083, UMR CNRS 6015), Université d'Angers, Angers, France
| | - Lucie Germain
- Centre de recherche du CHU de Québec, Université Laval and Centre de recherche en organogénèse expérimentale de l'Université Laval/LOEX, Québec, QC, Canada
- Département de chirurgie, Faculté de médecine, Université Laval, Québec, QC, Canada
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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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9
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Liu Y, Wang R, He X, Dai H, Betts RJ, Marionnet C, Bernerd F, Planel E, Wang X, Nocairi H, Cai Z, Qiu J, Ding C. Validation of a predictive method for sunscreen formula evaluation using gene expression analysis in a Chinese reconstructed full-thickness skin model. Int J Cosmet Sci 2019; 41:147-155. [PMID: 30719735 DOI: 10.1111/ics.12518] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 01/17/2019] [Accepted: 01/30/2019] [Indexed: 11/30/2022]
Abstract
OBJECTIVE This study aimed to establish a predictive in vitro method for assessing the photoprotective properties of sunscreens using a reconstructed full-thickness skin model. MATERIALS AND METHODS A full-thickness skin model reconstructed with human fibroblasts and keratinocytes isolated from Chinese skin was exposed to daily UV radiation (DUVR). We examined the transcriptomic response, identifying genes for which expression was modulated by DUVR in a dose-dependent manner. We then validated the methodology for efficacy evaluation of different sunscreens formulas. RESULTS The reconstructed skin model was histologically consistent with human skin, and upon DUVR exposure, the constituent fibroblasts and keratinocytes exhibited transcriptomic alterations in pathways associated with oxidative stress, inflammation and extracellular matrix remodelling. When used to evaluate sunscreen protection on the model, the observed level of protection from UV-induced gene expression was consistent with the corresponding protection factors determined clinically and allowed for statistical ranking of sunscreen efficacy. CONCLUSIONS Within this study we show that quantification of gene modulation within the reconstructed skin model is a biologically relevant approach with sensitivity and predictability to evaluate photoprotection products.
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Affiliation(s)
- Y Liu
- L'Oréal Research and Innovation, 550 Jin Yu Road, Pudong, Shanghai, P.R. China
| | - R Wang
- L'Oréal Research and Innovation, 550 Jin Yu Road, Pudong, Shanghai, P.R. China
| | - X He
- L'Oréal Research and Innovation, 550 Jin Yu Road, Pudong, Shanghai, P.R. China
| | - H Dai
- L'Oréal Research and Innovation, 550 Jin Yu Road, Pudong, Shanghai, P.R. China
| | - R J Betts
- L'Oréal Research and Innovation, 550 Jin Yu Road, Pudong, Shanghai, P.R. China
| | - C Marionnet
- L'Oréal Research and Innovation, 1 Avenue Eugene Schueller, 93601, Aulnay-sous-Bois, France
| | - F Bernerd
- L'Oréal Research and Innovation, 1 Avenue Eugene Schueller, 93601, Aulnay-sous-Bois, France
| | - E Planel
- L'Oréal Research and Innovation, 1 Avenue Eugene Schueller, 93601, Aulnay-sous-Bois, France
| | - X Wang
- L'Oréal Research and Innovation, 550 Jin Yu Road, Pudong, Shanghai, P.R. China
| | - H Nocairi
- L'Oréal Research and Innovation, 1 Avenue Eugene Schueller, 93601, Aulnay-sous-Bois, France
| | - Z Cai
- L'Oréal Research and Innovation, 550 Jin Yu Road, Pudong, Shanghai, P.R. China
| | - J Qiu
- L'Oréal Research and Innovation, 550 Jin Yu Road, Pudong, Shanghai, P.R. China
| | - C Ding
- L'Oréal Research and Innovation, 550 Jin Yu Road, Pudong, Shanghai, P.R. China
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Qutob SS, Chauhan V, Kuo B, Williams A, Yauk CL, McNamee JP, Gollapudi B. The application of transcriptional benchmark dose modeling for deriving thresholds of effects associated with solar-simulated ultraviolet radiation exposure. ENVIRONMENTAL AND MOLECULAR MUTAGENESIS 2018; 59:502-515. [PMID: 29761935 PMCID: PMC6099464 DOI: 10.1002/em.22196] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/03/2017] [Revised: 03/02/2018] [Accepted: 03/16/2018] [Indexed: 06/08/2023]
Abstract
Considerable data has been generated to elucidate the transcriptional response of cells to ultraviolet radiation (UVR) exposure providing a mechanistic understanding of UVR-induced cellular responses. However, using these data to support standards development has been challenging. In this study, we apply benchmark dose (BMD) modeling of transcriptional data to derive thresholds of gene responsiveness following exposure to solar-simulated UVR. Human epidermal keratinocytes were exposed to three doses (10, 20, 150 kJ/m2 ) of solar simulated UVR and assessed for gene expression changes 6 and 24 hr postexposure. The dose-response curves for genes with p-fit values (≥ 0.1) were used to derive BMD values for genes and pathways. Gene BMDs were bi-modally distributed, with a peak at ∼16 kJ/m2 and ∼108 kJ/m2 UVR exposure. Genes/pathways within Mode 1 were involved in cell signaling and DNA damage response, while genes/pathways in the higher Mode 2 were associated with immune response and cancer development. The median value of each Mode coincides with the current human exposure limits for UVR and for the minimal erythemal dose, respectively. Such concordance implies that the use of transcriptional BMD data may represent a promising new approach for deriving thresholds of actinic effects. Environ. Mol. Mutagen. 59:502-515, 2018. © 2018 The Authors Environmental and Molecular Mutagenesis published by Wiley Periodicals, Inc. on behalf of Environmental Mutagen Society.
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Affiliation(s)
- Sami S. Qutob
- Consumer and Clinical Radiation Protection BureauHealth CanadaOttawaOntarioK1A 1C1Canada
| | - Vinita Chauhan
- Consumer and Clinical Radiation Protection BureauHealth CanadaOttawaOntarioK1A 1C1Canada
| | - Byron Kuo
- Environmental Health Science and Research Bureau, Health CanadaOttawaOntarioCanada
| | - Andrew Williams
- Environmental Health Science and Research Bureau, Health CanadaOttawaOntarioCanada
| | - Carole L. Yauk
- Environmental Health Science and Research Bureau, Health CanadaOttawaOntarioCanada
| | - James P. McNamee
- Consumer and Clinical Radiation Protection BureauHealth CanadaOttawaOntarioK1A 1C1Canada
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Molecular effects of 1-naphthyl-methylcarbamate and solar radiation exposures on human melanocytes. Toxicol In Vitro 2016; 38:67-76. [PMID: 27829164 DOI: 10.1016/j.tiv.2016.11.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2016] [Revised: 09/30/2016] [Accepted: 11/03/2016] [Indexed: 12/21/2022]
Abstract
Carbaryl (1-naphthyl-methylcarbamate), a broad-spectrum insecticide, has recently been associated with the development of cutaneous melanoma in an epidemiological cohort study with U.S. farm workers also exposed to ultraviolet radiation, the main etiologic factor for skin carcinogenesis. We hypothesized that carbaryl exposure may increase deleterious effects of UV solar radiation on skin melanocytes. This study aimed to characterize human melanocytes after individual or combined exposure to carbaryl (100μM) and solar radiation (375mJ/cm2). In a microarray analysis, carbaryl, but not solar radiation, induced an oxidative stress response, evidenced by the upregulation of antioxidant genes, such as Hemeoxygenase-1 (HMOX1), and downregulation of Microphtalmia-associated Transcription Factor (MITF), the main regulator of melanocytic activity; results were confirmed by qRT-PCR. Carbaryl and solar radiation induced a gene response suggestive of DNA damage and cell cycle alteration. The expression of CDKN1A, BRCA1/2 and MDM2 genes was notably more intense in the combined treatment group, in a synergistic manner. Flow cytometry assays demonstrated S-phase cell cycle arrest, reduced apoptosis levels and faster induction of cyclobutane pyrimidine dimers (CPD) lesions in carbaryl treated groups. Our data suggests that carbaryl is genotoxic to human melanocytes, especially when associated with solar radiation.
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Saw CLL, Yang AY, Huang MT, Liu Y, Lee JH, Khor TO, Su ZY, Shu L, Lu Y, Conney AH, Kong ANT. Nrf2 null enhances UVB-induced skin inflammation and extracellular matrix damages. Cell Biosci 2014; 4:39. [PMID: 25228981 PMCID: PMC4164960 DOI: 10.1186/2045-3701-4-39] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2014] [Accepted: 06/17/2014] [Indexed: 02/03/2023] Open
Abstract
Nrf2 plays a critical role in defending against oxidative stress and inflammation. We previously reported that Nrf2 confers protection against ultraviolet-B (UVB)-induced inflammation, sunburn reaction, and is involved in sulforaphane-mediated photo-protective effects in the skin. In this study, we aimed to demonstrate the protective role of Nrf2 against inflammation-mediated extracellular matrix (ECM) damage induced by UVB irradiation. Ear biopsy weights were significantly increased in both Nrf2 wild-type (Nrf2 WT) and knockout (Nrf2 KO) mice one week after UVB irradiation. However, these weights increased more significantly in KO mice compared to WT mice, suggesting a greater inflammatory response in KO mice. In addition, we analyzed the protein expression of numerous markers, including macrophage inflammatory protein-2 (MIP-2), pro-matrix metalloproteinase-9 (MMP-9), and p53. p53, a regulator of DNA repair, was overexpressed in Nrf2 KO mice, indicating that the absence of Nrf2 led to more sustained DNA damage. There was also more substantial ECM degradation and increased inflammation in UVB-irradiated Nrf2 KO mice compared to UVB-irradiated WT mice. Furthermore, the protective effects of Nrf2 in response to UVB irradiation were mediated by increased HO-1 protein expression. Collectively, our results show that Nrf2 plays a key role in protecting against UVB irradiation and that the photo-protective effect of Nrf2 is closely related to the inhibition of ECM degradation and inflammation.
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Affiliation(s)
- Constance Lay Lay Saw
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Anne Yuqing Yang
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Mou-Tuan Huang
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Susan Lehman Cullman Laboratory for Cancer Research, Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Yue Liu
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Susan Lehman Cullman Laboratory for Cancer Research, Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Jong Hun Lee
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Tin Oo Khor
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Zheng-Yuan Su
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Limin Shu
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Yaoping Lu
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Susan Lehman Cullman Laboratory for Cancer Research, Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Allan H Conney
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Susan Lehman Cullman Laboratory for Cancer Research, Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA
| | - Ah-Ng Tony Kong
- Center for Cancer Prevention Research, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Department of Pharmaceutics, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, USA ; Susan Lehman Cullman Laboratory for Cancer Research, Department of Chemical Biology, Ernest Mario School of Pharmacy, Rutgers, The State University of New Jersey, Piscataway, NJ 08854, 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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Yagura T, Makita K, Yamamoto H, Menck CF, Schuch AP. Biological sensors for solar ultraviolet radiation. SENSORS 2011; 11:4277-94. [PMID: 22163847 PMCID: PMC3231322 DOI: 10.3390/s110404277] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/12/2011] [Revised: 04/02/2011] [Accepted: 04/04/2011] [Indexed: 12/24/2022]
Abstract
Solar ultraviolet (UV) radiation is widely known as a genotoxic environmental agent that affects Earth ecosystems and the human population. As a primary consequence of the stratospheric ozone layer depletion observed over the last decades, the increasing UV incidence levels have heightened the concern regarding deleterious consequences affecting both the biosphere and humans, thereby leading to an increase in scientific efforts to understand the role of sunlight in the induction of DNA damage, mutagenesis, and cell death. In fact, the various UV-wavelengths evoke characteristic biological impacts that greatly depend on light absorption of biomolecules, especially DNA, in living organisms, thereby justifying the increasing importance of developing biological sensors for monitoring the harmful impact of solar UV radiation under various environmental conditions. In this review, several types of biosensors proposed for laboratory and field application, that measure the biological effects of the UV component of sunlight, are described. Basically, the applicability of sensors based on DNA, bacteria or even mammalian cells are presented and compared. Data are also presented showing that on using DNA-based sensors, the various types of damage produced differ when this molecule is exposed in either an aqueous buffer or a dry solution. Apart from the data thus generated, the development of novel biosensors could help in evaluating the biological effects of sunlight on the environment. They also emerge as alternative tools for using live animals in the search for protective sunscreen products.
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Affiliation(s)
- Teiti Yagura
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil; E-Mails: (T.Y.); (A.P.S.)
| | - Kazuo Makita
- Faculty of Engineering, Takushoku University, Tokyo 193-0985, Japan; E-Mail:
| | - Hiromasa Yamamoto
- Department of Physics, Rikkyo University, Tokyo 171-8501, Japan; E-Mail:
| | - Carlos F.M. Menck
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil; E-Mails: (T.Y.); (A.P.S.)
- Author to whom correspondence should be addressed; E-Mail: ; Tel.: +55-11-3091-7499; Fax: +55-11-3091-7354
| | - André P. Schuch
- Department of Microbiology, Institute of Biomedical Sciences, University of São Paulo, São Paulo 05508-000, Brazil; E-Mails: (T.Y.); (A.P.S.)
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