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Pedre B. A guide to genetically-encoded redox biosensors: State of the art and opportunities. Arch Biochem Biophys 2024; 758:110067. [PMID: 38908743 DOI: 10.1016/j.abb.2024.110067] [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: 05/13/2024] [Revised: 06/18/2024] [Accepted: 06/19/2024] [Indexed: 06/24/2024]
Abstract
Genetically-encoded redox biosensors have become invaluable tools for monitoring cellular redox processes with high spatiotemporal resolution, coupling the presence of the redox-active analyte with a change in fluorescence signal that can be easily recorded. This review summarizes the available fluorescence recording methods and presents an in-depth classification of the redox biosensors, organized by the analytes they respond to. In addition to the fluorescent protein-based architectures, this review also describes the recent advances on fluorescent, chemigenetic-based redox biosensors and other emerging chemigenetic strategies. This review examines how these biosensors are designed, the biosensors sensing mechanism, and their practical advantages and disadvantages.
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Affiliation(s)
- Brandán Pedre
- Biochemistry, Molecular and Structural Biology Unit, Department of Chemistry, KU Leuven, Belgium.
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2
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Guo J, Chen S, Onishi Y, Shi Q, Song Y, Mei H, Chen L, Kool ET, Zhu RY. RNA Control via Redox-Responsive Acylation. Angew Chem Int Ed Engl 2024; 63:e202402178. [PMID: 38480851 DOI: 10.1002/anie.202402178] [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: 02/05/2024] [Indexed: 04/05/2024]
Abstract
Incorporating stimuli-responsive components into RNA constructs provides precise spatiotemporal control over RNA structures and functions. Despite considerable advancements, the utilization of redox-responsive stimuli for the activation of caged RNAs remains scarce. In this context, we present a novel strategy that leverages post-synthetic acylation coupled with redox-responsive chemistry to exert control over RNA. To achieve this, we design and synthesize a series of acylating reagents specifically tailored for introducing disulfide-containing acyl adducts into the 2'-OH groups of RNA ("cloaking"). Our data reveal that these acyl moieties can be readily appended, effectively blocking RNA catalytic activity and folding. We also demonstrate the traceless release and reactivation of caged RNAs ("uncloaking") through reducing stimuli. By employing this strategy, RNA exhibits rapid cellular uptake, effective distribution and activation in the cytosol without lysosomal entrapment. We anticipate that our methodology will be accessible to laboratories engaged in RNA biology and holds promise as a versatile platform for RNA-based applications.
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Affiliation(s)
- Junsong Guo
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Singapore, 117544, Singapore
| | - Siqin Chen
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Singapore, 117544, Singapore
| | - Yoshiyuki Onishi
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Qi Shi
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Singapore, 117544, Singapore
| | - Yangyang Song
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Dr, Singapore, 117599, Singapore
| | - Hui Mei
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Leilei Chen
- Cancer Science Institute of Singapore, National University of Singapore, 14 Medical Dr, Singapore, 117599, Singapore
| | - Eric T Kool
- Department of Chemistry, Stanford University, Stanford, CA 94305, USA
| | - Ru-Yi Zhu
- Department of Chemistry, National University of Singapore, 4 Science Drive 2, Singapore, 117544, Singapore
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3
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Matsuyama T, Osaka N, Yamaguchi M, Kanamaru N, Wada K, Kawakita A, Murata K, Sugimoto K, Okamoto K. Evaluation of Phototoxicity of Short-Wavelength Laser Light Utilizing PCNA Accumulation. MICROMACHINES 2024; 15:646. [PMID: 38793219 PMCID: PMC11124252 DOI: 10.3390/mi15050646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Revised: 05/02/2024] [Accepted: 05/11/2024] [Indexed: 05/26/2024]
Abstract
In recent years, diseases such as age-related macular degeneration and retinal pigment degeneration caused by excessive exposure to short-wavelength visible light have become significant concerns. With the aim of quantitatively evaluating the toxicity of short-wavelength light, proliferating cell nuclear antigen (PCNA) accumulation at the irradiation site was investigated using live cell imaging techniques to irradiate individual living cells with short-wavelength laser light. By examining the dependency of PCNA accumulation on the irradiation site within the cells and their cell cycle, it was observed that PCNA accumulation occurred only when the cell nucleus of cells in the S phase of the cell cycle was irradiated. We investigated the accumulation of PCNA at the laser irradiation site using laser light at wavelengths of 405 nm and 375 nm, with intensities ranging from 0.5 μW to 9.0 μW. The results confirmed an increase in PCNA accumulation with increasing intensity, and a higher accumulation was observed with laser light irradiation at a wavelength of 375 nm compared to 405 nm. By comparing the PCNA accumulation and 24 h cell viability, we demonstrated the feasibility of quantitatively assessing laser light toxicity through the measurement of PCNA accumulation.
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Affiliation(s)
- Tetsuya Matsuyama
- Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Noboru Osaka
- Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Mikiya Yamaguchi
- Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Naohiro Kanamaru
- Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Kenji Wada
- Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Ai Kawakita
- Graduate School of Agriculture, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Kaori Murata
- Graduate School of Agriculture, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Kenji Sugimoto
- Graduate School of Agriculture, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
| | - Koichi Okamoto
- Graduate School of Engineering, Osaka Metropolitan University, 1-1 Gakuen-cho, Naka-ku, Sakai 599-8531, Osaka, Japan
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4
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Wendland RJ, Conway MT, Worthington KS. Evaluating the polymerization effectiveness and biocompatibility of bio-sourced, visible light-based photoinitiator systems. J Biomed Mater Res A 2024. [PMID: 38572856 DOI: 10.1002/jbm.a.37715] [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: 12/15/2023] [Revised: 03/06/2024] [Accepted: 03/23/2024] [Indexed: 04/05/2024]
Abstract
The use of photopolymerization is expanding across a multitude of biomedical applications, from drug delivery to bioprinting. Many of these current and emerging photopolymerization systems employ visible light, as motivated by safety and energy efficiency considerations. However, the "library" of visible light initiators is limited compared with the wealth of options available for UV polymerization. Furthermore, the synthesis of traditional photoinitiators relies on diminishing raw materials, and several traditional photoinitiators are considered emerging environmental contaminants. As such, there has been recent focus on identifying and characterizing biologically sourced, visible light-based photoinitiator systems that can be effectively used in photopolymerization applications. In this regard, several bio-sourced molecules have been shown to act as photoinitiators, primarily through Type II photoinitiation mechanisms. However, whether bio-sourced molecules can also act as effective synergists in these reactions remains unknown. In this study, we evaluated the effectiveness of bio-sourced synergist candidates, with a focus on amino acids, due to their amine functional groups, in combination with two bio-sourced photoinitiator molecules: riboflavin and curcumin. We tested the effectiveness of these photoinitiator systems under both violet (405 nm) and blue (460-475 nm) light using photo-rheology. We found that several synergist candidates, namely lysine, arginine, and histidine, increased the polymerization effectiveness of riboflavin when used with both violet and blue light. With curcumin, we found that almost all tested synergist candidates slightly decreased the polymerization effectiveness compared with curcumin alone under both light sources. These results show that bio-sourced molecules have the potential to be used as synergists with bio-sourced photoinitiators in visible light photopolymerization. However, more work must be done to fully characterize these reactions and to investigate more synergist candidates. Ultimately, this information is expected to expand the range of available visible light-based photoinitiator systems and increase their sustainability.
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Affiliation(s)
- Rion J Wendland
- Roy J. Carver Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa, USA
| | - Matthew T Conway
- Roy J. Carver Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa, USA
| | - Kristan S Worthington
- Roy J. Carver Department of Biomedical Engineering, University of Iowa, Iowa City, Iowa, USA
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5
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Sarandy MM, Gonçalves RV, Valacchi G. Cutaneous Redox Senescence. Biomedicines 2024; 12:348. [PMID: 38397950 PMCID: PMC10886899 DOI: 10.3390/biomedicines12020348] [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: 12/04/2023] [Revised: 01/24/2024] [Accepted: 01/29/2024] [Indexed: 02/25/2024] Open
Abstract
Our current understanding of skin cell senescence involves the role of environmental stressors (UV, O3, cigarette smoke, particulate matter, etc.), lifestyle (diet, exercise, etc.) as well as genetic factors (metabolic changes, hormonal, etc.). The common mechanism of action of these stressors is the disturbance of cellular redox balance characterized by increased free radicals and reactive oxygen species (ROS), and when these overload the intrinsic antioxidant defense system, it can lead to an oxidative stress cellular condition. The main redox mechanisms that activate cellular senescence in the skin involve (1) the oxidative damage of telomeres causing their shortening; (2) the oxidation of proteomes and DNA damage; (3) an a in lysosomal mass through the increased activity of resident enzymes such as senescence-associated β-galactosidase (SA-β-gal) as well as other proteins that are products of lysosomal activity; (4) and the increased expression of SASP, in particular pro-inflammatory cytokines transcriptionally regulated by NF-κB. However, the main targets of ROS on the skin are the proteome (oxi-proteome), followed by telomeres, nucleic acids (DNAs), lipids, proteins, and cytoplasmic organelles. As a result, cell cycle arrest pathways, lipid peroxidation, increased lysosomal content and dysfunctional mitochondria, and SASP synthesis occur. Furthermore, oxidative stress in skin cells increases the activity of p16INK4A and p53 as inhibitors of Rb and CDks, which are important for maintaining the cell cycle. p53 also promotes the inactivation of mTOR-mediated autophagic and apoptotic pathways, leading to senescence. However, these markers alone cannot establish the state of cellular senescence, and multiple analyses are encouraged for confirmation. An updated and more comprehensive approach to investigating skin senescence should include further assays of ox-inflammatory molecular pathways that can consolidate the understanding of cutaneous redox senescence.
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Affiliation(s)
- Mariáurea Matias Sarandy
- Department of Animal Science, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, 600 Laureate Way, Kannapolis, NC 28081, USA
- Department of General Biology, Federal University of Viçosa, Viçosa 36570-900, MG, Brazil
| | - Reggiani Vilela Gonçalves
- Department of General Biology, Federal University of Viçosa, Viçosa 36570-900, MG, Brazil
- Department of Animal Biology, Federal University of Viçosa, Viçosa 36570-900, MG, Brazil
| | - Giuseppe Valacchi
- Department of Animal Science, Plants for Human Health Institute, North Carolina State University, North Carolina Research Campus, 600 Laureate Way, Kannapolis, NC 28081, USA
- Department of Environment and Prevention, University of Ferrara, 44121 Ferrara, Italy
- Department of Food and Nutrition, Kyung Hee University, Seoul 02447, Republic of Korea
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Najafzadeh M, Naeem P, Ghaderi N, Jafarinejad S, Karimi Z, Ghaderi M, Akhbari P, Ghaderi R, Farsi P, Wright A, Anderson D. Comparing P53 expression and genome-wide transcriptome profiling to Comet assay in lymphocytes from melanoma patients and healthy controls. Sci Rep 2023; 13:18858. [PMID: 37914759 PMCID: PMC10620420 DOI: 10.1038/s41598-023-44965-z] [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: 02/01/2023] [Accepted: 10/13/2023] [Indexed: 11/03/2023] Open
Abstract
This study compared the expression of TP53 in lymphocytes from malignant melanoma (MM) patients with positive sentinel nodes to healthy controls (HCs) following exposure to various doses of UVA radiation. The Lymphocyte Genome Sensitivity (LGS) assay indicated significant differences in DNA damage in lymphocytes between MM patients and HCs. qPCR data demonstrated an overall 3.4-fold increase in TP53 expression in lymphocytes from MM patients compared to healthy controls, following treatment with 0.5 mW/cm2 UVA radiation. Western blotting confirmed that p53 expression was increased in MM lymphocytes following UVA exposure compared to healthy individuals. Genome transcriptome profiling data displayed differences in gene expression between UVA-treated lymphocytes from MM patients and HCs. Peripheral lymphocytes from MM patients are more susceptible to the genotoxic effects of UVA compared to healthy individuals. Our previous studies showed that UVA exposure of various intensities caused significant differences in the levels of DNA damage between lymphocytes from cancer patients compared to HCs through the LGS assay. The present study's results provide further credibility to the LGS assay as a screening test for cancer detection. Peripheral lymphocytes could be a promising blood biopsy biomarker for staging of carcinomas and prevention of carcinoma progression at early stages.
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Affiliation(s)
- Mojgan Najafzadeh
- School of Life Sciences, University of Bradford, Richmond Road, Bradford, BD7 1DP, West Yorkshire, UK.
| | - Parisa Naeem
- School of Life Sciences, University of Bradford, Richmond Road, Bradford, BD7 1DP, West Yorkshire, UK
| | - Nader Ghaderi
- Bradford Teaching Hospitals NHS Foundation Trust, St Luke's Hospital, Little Horton Lane, BD5 0NA, UK
| | - Shohreh Jafarinejad
- School of Life Sciences, University of Bradford, Richmond Road, Bradford, BD7 1DP, West Yorkshire, UK
| | - Zahra Karimi
- School of Life Sciences, University of Bradford, Richmond Road, Bradford, BD7 1DP, West Yorkshire, UK
| | - Mehran Ghaderi
- Division of Pathology F46, Department of Laboratory Medicine, Karolinska Institute, Karolinska University Hospital, Huddinge, 141 86, Stockholm, Sweden
| | - Pouria Akhbari
- Institute of Biomedical and Clinical Science, College of Medicine and Health, University of Exeter, Exeter, EX2 5DW, UK
| | - Rojan Ghaderi
- Department of Medicine, Imperial College London, London, SW7 2BX, UK
| | - Pedram Farsi
- Department of Clinical Pathology and Cytology, Karolinska University Hospital, 141 86, Stockholm, Sweden
| | - Andrew Wright
- Bradford Teaching Hospitals NHS Foundation Trust, St Luke's Hospital, Little Horton Lane, BD5 0NA, UK
| | - Diana Anderson
- School of Life Sciences, University of Bradford, Richmond Road, Bradford, BD7 1DP, West Yorkshire, UK
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7
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Khan MM, Rothenberg DO, Shahfahad, Qiu BL, Zhu ZR. Identification and transcriptional profiling of UV-A-responsive genes in Bemisia tabaci. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 263:115300. [PMID: 37494735 DOI: 10.1016/j.ecoenv.2023.115300] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/23/2023] [Revised: 07/10/2023] [Accepted: 07/21/2023] [Indexed: 07/28/2023]
Abstract
Ultraviolet-A (UV-A) radiation directly impacts the growth and spread of Bemisia tabaci. However, the mechanistic pathways of this phenomenon remain unknown. We analyzed B. tabaci transcriptome data after exposure to UV-A radiation for 6 h. The 453 genes were identified whose expression were significantly altered in response to the stress induced by UV-A irradiation. Forty genes were up-regulated, while 413 genes were down-regulated. Enrichment analysis using GO, KEGG, and Genomes databases revealed that the DEGs play key roles in antioxidation and detoxification, protein turnover, metabolic, developmental processes, and immunological response. Among the gene families involved in detoxification, shock, and development, down-regulated DEGs in transcriptional factor gene families were significantly greater than those up-regulated DEGs. Our findings demonstrated that exposure to UV-A stress can suppress immunity and affect the growth and biological parameters of B. tabaci by altering gene regulation. These results suggest a potential utility of UV-A stress in managing B. tabaci under greenhouse conditions.
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Affiliation(s)
- Muhammad Musa Khan
- Hainan Institute of Zhejiang University, Yazhou Bay Science and Technology City, Sanya 572000, PR China
| | - Dylan O'Neill Rothenberg
- College of Horticulture Science, South China Agricultural University, Guangzhou 510642, PR China
| | - Shahfahad
- Department of Agronomy, Abdul Wali Khan University Mardan, Khyber Pakhtunkhwa 23200, Pakistan
| | - Bao-Li Qiu
- Chongqing Key Laboratory of Vector Insects, College of Life Sciences, Chongqing Normal University, Chongqing 401331, China.
| | - Zeng-Rong Zhu
- Hainan Institute of Zhejiang University, Yazhou Bay Science and Technology City, Sanya 572000, PR China.
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8
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Naskar A, Kim KS. Friends against the Foe: Synergistic Photothermal and Photodynamic Therapy against Bacterial Infections. Pharmaceutics 2023; 15:pharmaceutics15041116. [PMID: 37111601 PMCID: PMC10146283 DOI: 10.3390/pharmaceutics15041116] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2023] [Revised: 03/28/2023] [Accepted: 03/30/2023] [Indexed: 04/03/2023] Open
Abstract
Multidrug-resistant (MDR) bacteria are rapidly emerging, coupled with the failure of current antibiotic therapy; thus, new alternatives for effectively treating infections caused by MDR bacteria are required. Hyperthermia-mediated photothermal therapy (PTT) and reactive oxygen species (ROS)-mediated photodynamic therapy (PDT) have attracted extensive attention as antibacterial therapies owing to advantages such as low invasiveness, low toxicity, and low likelihood of causing bacterial resistance. However, both strategies have notable drawbacks, including the high temperature requirements of PTT and the weak ability of PDT-derived ROS to penetrate target cells. To overcome these limitations, a combination of PTT and PDT has been used against MDR bacteria. In this review, we discuss the unique benefits and limitations of PTT and PDT against MDR bacteria. The mechanisms underlying the synergistic effects of the PTT–PDT combination are also discussed. Furthermore, we introduced advancements in antibacterial methods using nano-based PTT and PDT agents to treat infections caused by MDR bacteria. Finally, we highlight the existing challenges and future perspectives of synergistic PTT–PDT combination therapy against infections caused by MDR bacteria. We believe that this review will encourage synergistic PTT- and PDT-based antibacterial research and can be referenced for future clinical applications.
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Affiliation(s)
- Atanu Naskar
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea
| | - Kwang-sun Kim
- Department of Chemistry and Chemistry Institute for Functional Materials, Pusan National University, Busan 46241, Republic of Korea
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9
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Tsuchida K, Sakiyama N, Ogura Y, Kobayashi M. Skin lightness affects ultraviolet A-induced oxidative stress: Evaluation using ultraweak photon emission measurement. Exp Dermatol 2023; 32:146-153. [PMID: 36256509 DOI: 10.1111/exd.14690] [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: 07/14/2022] [Revised: 10/03/2022] [Accepted: 10/16/2022] [Indexed: 11/30/2022]
Abstract
The human skin is usually exposed to ultraviolet A (UVA) in the sunlight and experiences oxidative stress associated with skin disorders and aging. Although oxidative stress caused by UVA exposure is assumed to be dependent on skin colour, few studies have demonstrated this dependency. We investigated the effects of skin colour on UVA-induced oxidative stress using ultraweak photon emission (UPE) generated from the skin during oxidation processes. The UPE intensities of skin samples were detected using a photomultiplier tube every second without any labelling. We irradiated skin tissue of different colours with UVA and measured UPE over time. UVA-induced UPE could be detected from immediately after irradiation to 2 h after irradiation, indicating persistent oxidative stress. Skin lightness (L*) positively correlates with UPE intensity. Lighter-coloured skin exhibited more UVA-induced UPE, indicating higher oxidative stress. Additionally, oxidative stress persisted significantly more in lighter skin compared with darker skin. Skin tissues exhibited pigment darkening after UVA irradiation. Our results suggest that skin lightness affects oxidative stress induced by UV irradiation. Our study demonstrated the relationship between skin lightness and UVA-induced oxidative stress for the first time and offers new photodermatological insights into the human skin.
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Affiliation(s)
| | | | - Yuki Ogura
- Shiseido Co., Ltd., MIRAI Technology Institute, Yokohama, Japan
| | - Masaki Kobayashi
- Graduate Department of Electronics, Tohoku Institute of Technology, Sendai, Japan
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10
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Keskin S, Acikgoz E, Ertürk FY, Ragbetli MC, Ozkol H. Histopathological Changes in Liver and Heart Tissue Associated with Experimental Ultraviolet Radiation A and B Exposure on Wistar Albino Rats. Photochem Photobiol 2023; 99:132-136. [PMID: 35702999 DOI: 10.1111/php.13664] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2022] [Accepted: 06/06/2022] [Indexed: 01/25/2023]
Abstract
This study aims to evaluate the influences of ultraviolet radiation A and B (UVA + B) exposure on the liver and heart organs of albino rats. Female Wistar Albino rats, whose hair of the dorsal skin was shaved, were exposed to a combined UVA + B radiation for 2 h/day, for 4 weeks in order to be compared with the control group. Histopathological findings in vital organs (liver and heart) were evaluated. Tissues were fixed in 10% buffered formalin (pH = 7.2) and embedded in paraffin. The histopathological findings were examined on the H&E stained sections with light microscopy. The results show that the liver and the heart were injured in the UVA + B group. Liver tissue in the UVA + B group showed minimal vacuolation, enlargement of hepatocytes and bile duct proliferation, and the heart tissue showed hibernomas; uniform large cells resembling brown fat with coarsely granular to multivacuolated cytoplasm that is eosinophilic or pale with a small central nucleus. The number of hibernoma cases was significantly higher in the UVA + B group compared with the control group (P = 0.021). The control group showed normal liver and heart histology with normal adipose tissue in the pericardium. As a result, UVA + B exposure has toxic effects, especially on the liver and the heart of Wistar albino rats. UV radiation may cause such adverse effects in humans. Therefore, protection against the harmful effects of UV radiation is of significant importance for skin and organs.
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Affiliation(s)
- Seda Keskin
- Department of Histology and Embryology, Van Yuzuncu Yil University School of Medicine, Van, Turkey
| | - Eda Acikgoz
- Department of Histology and Embryology, Van Yuzuncu Yil University School of Medicine, Van, Turkey
| | | | - Murat Cetin Ragbetli
- Department of Histology and Embryology, Karamanoglu Mehmetbey University School of Medicine, Karaman, Turkey
| | - Halil Ozkol
- Department of Medical Biology, Van Yuzuncu Yil University, Medical Faculty, Van, Turkey
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11
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Zeng F, Parker K, Zhan Y, Miller M, Zhu MY. Upregulated DNA Damage-Linked Biomarkers in Parkinson's Disease Model Mice. ASN Neuro 2023; 15:17590914231152099. [PMID: 36683340 PMCID: PMC9880594 DOI: 10.1177/17590914231152099] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 12/31/2022] [Accepted: 01/03/2023] [Indexed: 01/24/2023] Open
Abstract
SUMMARY STATEMENT The present study examined expression of DNA damage markers in VMAT2 Lo PD model mice. The results demonstrate there is a significant increase in these DNA damage markers mostly in the brain regions of 18- and 23-month-old model mice, indicating oxidative stress-induced DNA lesion is an important pathologic feature of this mouse model.
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Affiliation(s)
- Fei Zeng
- Department of Neurology, Renmin Hospital of the Wuhan University,
Wuhan, China
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State
University, Johnson City, TN, USA
| | - Karsten Parker
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State
University, Johnson City, TN, USA
| | - Yanqiang Zhan
- Department of Neurology, Renmin Hospital of the Wuhan University,
Wuhan, China
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State
University, Johnson City, TN, USA
| | - Matthew Miller
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State
University, Johnson City, TN, USA
| | - Meng-Yang Zhu
- Departments of Biomedical Sciences, Quillen College of Medicine, East Tennessee State
University, Johnson City, TN, USA
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12
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Trigo-Gutierrez JK, Calori IR, de Oliveira Bárbara G, Pavarina AC, Gonçalves RS, Caetano W, Tedesco AC, Mima EGDO. Photo-responsive polymeric micelles for the light-triggered release of curcumin targeting antimicrobial activity. Front Microbiol 2023; 14:1132781. [PMID: 37152758 PMCID: PMC10157243 DOI: 10.3389/fmicb.2023.1132781] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Accepted: 04/03/2023] [Indexed: 05/09/2023] Open
Abstract
Nanocarriers have been successfully used to solubilize, deliver, and increase the bioavailability of curcumin (CUR), but slow CUR release rates hinder its use as a topical photosensitizer in antimicrobial photodynamic therapy. A photo-responsive polymer (PRP) was designed for the light-triggered release of CUR with an effective light activation-dependent antimicrobial response. The characterization of the PRP was compared with non-responsive micelles comprising Pluronics™ P123 and F127. According to the findings, the PRP formed photo-responsive micelles in the nanometric scale (< 100 nm) with a lower critical micelle concentration (3.74 × 10-4 M-1, 5.8 × 10-4 M-1, and 7.2 × 10-6 M-1 for PRP, F127, P123, respectively, at 25°C) and higher entrapment efficiency of CUR (88.7, 77.2, and 72.3% for PRP, F127, and P123 micelles, respectively) than the pluronics evaluated. The PRP provided enhanced protection of CUR compared to P123 micelles, as demonstrated in fluorescence quenching studies. The light-triggered release of CUR from PRP occurred with UV light irradiation (at 355 nm and 25 mW cm-2) and a cumulative release of 88.34% of CUR within 1 h compared to 80% from pluronics after 36 h. In vitro studies showed that CUR-loaded PRP was non-toxic to mammal cell, showed inactivation of the pathogenic microorganisms Candida albicans, Pseudomonas aeruginosa, and methicillin-resistant Staphylococcus aureus, and decreased biofilm biomass when associated with blue light (455 nm, 33.84 J/cm2). The findings show that the CUR-loaded PRP micelle is a viable option for antimicrobial activity.
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Affiliation(s)
- Jeffersson Krishan Trigo-Gutierrez
- Laboratory of Applied Microbiology, Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - Italo Rodrigo Calori
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering, Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Geovana de Oliveira Bárbara
- Laboratory of Applied Microbiology, Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - Ana Claudia Pavarina
- Laboratory of Applied Microbiology, Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
| | - Renato Sonchini Gonçalves
- Department of Chemistry, Research Nucleus of Photodynamic Therapy, State University of Maringá, Maringá, Paraná, Brazil
| | - Wilker Caetano
- Department of Chemistry, Research Nucleus of Photodynamic Therapy, State University of Maringá, Maringá, Paraná, Brazil
| | - Antonio Claudio Tedesco
- Department of Chemistry, Center of Nanotechnology and Tissue Engineering, Photobiology and Photomedicine Research Group, Faculty of Philosophy, Sciences and Letters of Ribeirão Preto, University of São Paulo, Ribeirão Preto, São Paulo, Brazil
| | - Ewerton Garcia de Oliveira Mima
- Laboratory of Applied Microbiology, Department of Dental Materials and Prosthodontics, School of Dentistry, São Paulo State University (UNESP), Araraquara, Brazil
- *Correspondence: Ewerton Garcia de Oliveira Mima,
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13
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Cho ER, Kang DH. Combination system of pulsed ohmic heating and 365-nm UVA light-emitting diodes to enhance inactivation of foodborne pathogens in phosphate-buffered saline, milk, and orange juice. INNOV FOOD SCI EMERG 2022. [DOI: 10.1016/j.ifset.2022.103250] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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14
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Molecular characterization and elucidation of the function of Hap38 MAPK in the response of Helicoverpa armigera (Hübner) to UV-A stress. Sci Rep 2022; 12:18489. [PMID: 36323798 PMCID: PMC9630311 DOI: 10.1038/s41598-022-23363-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2022] [Accepted: 10/31/2022] [Indexed: 11/05/2022] Open
Abstract
The cotton bollworm Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae), an important pest of cotton, is detrimental to cotton production. Light from UV-A ultraviolet lamps is regarded as a form of environmental stress for insects. In order to investigate the response of H. armigera exposed to UV-A, we explored Hap38 MAPK expression and functions. We hope that the findings of this study will lay the foundation for future investigations into the insect's phototaxis mechanism. A p38 MAPK was cloned and named Hap38 MAPK. A phylogenetic tree showed that Hap38 MAPK was highly conserved. The gene was highly expressed in the thorax and females. Under UV-A stress, the expression of the gene decreased significantly. After silencing Hap38 MAPK, the activity of the antioxidant enzymes SOD, POD, CAT, and GR decreased. This study suggested that Hap38 MAPK responds to UV-A irradiation and plays critical roles in the defense response to environmental stresses.
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15
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Zeng K, Han L, Chen Y. Endogenous Proteins Modulation in Live Cells with Small Molecules and Light. Chembiochem 2022; 23:e202200244. [PMID: 35822393 DOI: 10.1002/cbic.202200244] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Revised: 06/23/2022] [Indexed: 11/05/2022]
Abstract
The protein modulation by light illumination enables the biological role investigation in high spatiotemporal precision. Compared to genetic methods, the small molecules approach is uniquely suited for modulating endogenous proteins. The endogenous protein modulation in live cells with small molecules and light has recently advanced on three distinctive frontiers: i) the infrared-light-induced or localized decaging of small molecules by photolysis, ii) the visible-light-induced photocatalytic releasing of small molecules, and iii) the small-molecule-ligand-directed caging for photo-modulation of proteins. Together, these methods provide powerful chemical biology tool kits for spatiotemporal modulation of endogenous proteins with potential therapeutic applications. This Concept aims to inspire organic chemists and chemical biologists to delve into this burgeoning endogenous protein modulation field for new biological discoveries.
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Affiliation(s)
- Kaixing Zeng
- Shanghai Institute Of Organic Chemistry State Key Laboratory of Bioorganic Chemistry, BNPC, CHINA
| | - Lili Han
- Shanghai Institute Of Organic Chemistry State Key Laboratory of Bioorganic Chemistry, BNPC, CHINA
| | - Yiyun Chen
- Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, BNPC, 345 Lingling Road, 200032, Shanghai, CHINA
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16
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High-throughput selection of cells based on accumulated growth and division using PicoShell particles. Proc Natl Acad Sci U S A 2022; 119:2109430119. [PMID: 35046027 PMCID: PMC8794849 DOI: 10.1073/pnas.2109430119] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 11/16/2021] [Indexed: 01/19/2023] Open
Abstract
Production of high-energy lipids by microalgae may provide a sustainable energy source that can help tackle climate change. However, microalgae engineered to produce more lipids usually grow slowly, leading to reduced overall yields. Unfortunately, culture vessels used to select cells based on growth while maintaining high biomass production, such as well plates, water-in-oil droplet emulsions, and nanowell arrays, do not provide production-relevant environments that cells experience in scaled-up cultures (e.g., bioreactors or outdoor cultivation farms). As a result, strains that are developed in the laboratory may not exhibit the same beneficial phenotypic behavior when transferred to industrial production. Here, we introduce PicoShells, picoliter-scale porous hydrogel compartments, that enable >100,000 individual cells to be compartmentalized, cultured in production-relevant environments, and selected based on growth and bioproduct accumulation traits using standard flow cytometers. PicoShells consist of a hollow inner cavity where cells are encapsulated and a porous outer shell that allows for continuous solution exchange with the external environment. PicoShells allow for cell growth directly in culture environments, such as shaking flasks and bioreactors. We experimentally demonstrate that Chlorella sp., Saccharomyces cerevisiae, and Chinese hamster ovary cells, used for bioproduction, grow to significantly larger colony sizes in PicoShells than in water-in-oil droplet emulsions (P < 0.05). We also demonstrate that PicoShells containing faster dividing and growing Chlorella clonal colonies can be selected using a fluorescence-activated cell sorter and regrown. Using the PicoShell process, we select a Chlorella population that accumulates chlorophyll 8% faster than does an unselected population after a single selection cycle.
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17
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Wang F, Graham ET, Naowarojna N, Shi Z, Wang Y, Xie G, Zhou L, Salmon W, Jia JM, Wang X, Huang Y, Schreiber SL, Zou Y. PALP: A rapid imaging technique for stratifying ferroptosis sensitivity in normal and tumor tissues in situ. Cell Chem Biol 2022; 29:157-170.e6. [PMID: 34813762 PMCID: PMC8792350 DOI: 10.1016/j.chembiol.2021.11.001] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 09/11/2021] [Accepted: 11/01/2021] [Indexed: 01/22/2023]
Abstract
Ferroptosis is an emerging cancer suppression strategy. However, how to select cancer patients for treating with ferroptosis inducers remains challenging. Here, we develop photochemical activation of membrane lipid peroxidation (PALP), which uses targeted lasers to induce localized polyunsaturated fatty acyl (PUFA)-lipid peroxidation for reporting ferroptosis sensitivity in cells and tissues. PALP captured by BODIPY-C11 can be suppressed by lipophilic antioxidants and iron chelation, and is dependent on PUFA-lipid levels. Moreover, we develop PALPv2, for studying lipid peroxidation on selected membranes along the z axis in live cells using two-photon microscopes. Using PALPv1, we detect PUFA-lipids in multiple tissues, and validate a PUFA-phospholipid reduction during muscle aging as previously reported. Patterns of PALPv1 signals across multiple cancer cell types in vitro and in vivo are concordant with their ferroptosis susceptibility and PUFA-phospholipid levels. We envision that PALP will enable rapid stratification of ferroptosis sensitivity in cancer patients and facilitate PUFA-lipid research.
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Affiliation(s)
- Fengxiang Wang
- College of Life Sciences, Zhejiang University, Hangzhou, Zhejiang 310058, China; Westlake Four-Dimensional Dynamic Metabolomics (Meta4D) Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China; Westlake Institute for Advanced Study, Hangzhou, Zhejiang 310024, China
| | - Emily T Graham
- Chemical Biology and Therapeutics Science Program, Broad Institute, Cambridge, MA, USA
| | - Nathchar Naowarojna
- Westlake Four-Dimensional Dynamic Metabolomics (Meta4D) Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China; Westlake Institute for Advanced Study, Hangzhou, Zhejiang 310024, China
| | - Zhennan Shi
- Westlake Four-Dimensional Dynamic Metabolomics (Meta4D) Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China; Westlake Institute for Advanced Study, Hangzhou, Zhejiang 310024, China
| | - Yuqi Wang
- Westlake Four-Dimensional Dynamic Metabolomics (Meta4D) Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China; Westlake Institute for Advanced Study, Hangzhou, Zhejiang 310024, China
| | - Guanglei Xie
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China; Westlake Institute for Advanced Study, Hangzhou, Zhejiang 310024, China; Westlake Genomics and Bioinformatics Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China
| | - Lili Zhou
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China; Westlake Institute for Advanced Study, Hangzhou, Zhejiang 310024, China
| | - Wendy Salmon
- Whitehead Institute for Biomedical Research, MIT, Cambridge, MA 02142, USA
| | - Jie-Min Jia
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China; Westlake Institute for Advanced Study, Hangzhou, Zhejiang 310024, China
| | - Xi Wang
- School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China; Westlake Institute for Advanced Study, Hangzhou, Zhejiang 310024, China; Westlake Genomics and Bioinformatics Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China
| | - Yuwei Huang
- School of Life Sciences, Tsinghua University, Beijing 100084, China
| | - Stuart L Schreiber
- Chemical Biology and Therapeutics Science Program, Broad Institute, Cambridge, MA, USA; Department of Chemistry and Chemical Biology, Harvard University, MA 02138, USA.
| | - Yilong Zou
- Westlake Four-Dimensional Dynamic Metabolomics (Meta4D) Lab, Westlake Laboratory of Life Sciences and Biomedicine, Hangzhou, Zhejiang 310024, China; School of Life Sciences, Westlake University, Hangzhou, Zhejiang 310024, China; Westlake Institute for Advanced Study, Hangzhou, Zhejiang 310024, China.
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18
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Hansda S, Ghosh R. Bystander effect of ultraviolet A radiation protects A375 melanoma cells by induction of antioxidant defense. JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH. PART C, TOXICOLOGY AND CARCINOGENESIS 2021; 40:46-67. [PMID: 35895930 DOI: 10.1080/26896583.2021.1994820] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Ultraviolet (UV) irradiated cells release factors that result in varied responses by non-irradiated cells via bystander effects (BE). The UV-BE is dependent on the cell types involved and on the wavelength of the radiation. Using conditioned medium from UVA-irradiated A375 human melanoma cells (UVA-CM), UVA-bystander response was evaluated on the viability of naïve A375 cells. UVA-CM treatment itself did not alter cell viability; however, UVA-CM treated bystander cells were more resistant to the lethal action of UVA, UVB, UVC or H2O2. Effects of UVA-CM on cell proliferation, mechanism of cell death, DNA damage, malondialdehyde formation, generation of reactive oxygen species (ROS) and antioxidant status were studied in A375 cells. We observed that UVA-CM triggered antioxidant defenses to elicit protective responses through elevation of antioxidant enzyme activities in cells, which persisted until 5 h after exposure to UVA-CM. This was possibly responsible for decreased generation of ROS and diminished DNA and membrane damage in cells. These bystander cells were resistant to killing when exposed to different genotoxic agents. Damaged nuclei, induction of apoptosis and autophagic death were also lowered in these cells. The influence of UVA-CM on cancer stem cells side population was assessed.Highlights:UVA radiation induced bystander effects in A375 cellsDamage by genotoxicants is suppressed due to lower ROS generation on UVA-CM treatmentUVA-CM exposure enhanced higher activities of CAT and GPxResistance to genotoxic agents in such cells was due to elevated antioxidant defenceUVA-bystander phenomenon was a protective response.
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Affiliation(s)
- Surajit Hansda
- Department of Biochemistry & Biophysics, University of Kalyani, Kalyani, India
| | - Rita Ghosh
- Department of Biochemistry & Biophysics, University of Kalyani, Kalyani, India
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19
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Guan LL, Lim HW, Mohammad TF. Sunscreens and Photoaging: A Review of Current Literature. Am J Clin Dermatol 2021; 22:819-828. [PMID: 34387824 PMCID: PMC8361399 DOI: 10.1007/s40257-021-00632-5] [Citation(s) in RCA: 67] [Impact Index Per Article: 22.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/29/2021] [Indexed: 12/17/2022]
Abstract
Sunscreens have been on the market for many decades as a means of protection against ultraviolet-induced erythema. Over the years, evidence has also shown their efficacy in the prevention of photoaging, dyspigmentation, DNA damage, and photocarcinogenesis. In the USA, most broad-spectrum sunscreens provide protection against ultraviolet B (UVB) radiation and short-wavelength ultraviolet A (UVA) radiation. Evidence suggests that visible light and infrared light may play a role in photoaging and should be considered when choosing a sunscreen. Currently, there is a paucity of US FDA-approved filters that provide protection against long UVA (> 370 nm) and none against visible light. Additionally, various sunscreen additives such as antioxidants and photolyases have also been reported to protect against and possibly reverse signs of photoaging. This literature review evaluates the utility of sunscreen in protecting against photoaging and further explores the requirements for an ideal sunscreen.
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Affiliation(s)
- Linna L Guan
- Department of Dermatology, Henry Ford Health Systems, Henry Ford Medical Center-New Center One, 3031 W. Grand Boulevard, Suite 800, Detroit, MI, 48202, USA
| | - Henry W Lim
- Department of Dermatology, Henry Ford Health Systems, Henry Ford Medical Center-New Center One, 3031 W. Grand Boulevard, Suite 800, Detroit, MI, 48202, USA
| | - Tasneem F Mohammad
- Department of Dermatology, Henry Ford Health Systems, Henry Ford Medical Center-New Center One, 3031 W. Grand Boulevard, Suite 800, Detroit, MI, 48202, USA.
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20
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Fagan A, Bartkowski M, Giordani S. Spiropyran-Based Drug Delivery Systems. Front Chem 2021; 9:720087. [PMID: 34395385 PMCID: PMC8358077 DOI: 10.3389/fchem.2021.720087] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 07/19/2021] [Indexed: 01/10/2023] Open
Abstract
Nanocarriers are rapidly growing in popularity in the field of drug delivery. The ability of nanocarriers to encapsulate and distribute poorly soluble drugs while minimising their undesired effects is significantly advantageous over traditional drug delivery. Nanocarriers can also be decorated with imaging moieties and targeting agents, further incrementing their functionality. Of recent interest as potential nanocarriers are spiropyrans; a family of photochromic molecular switches. Due to their multi-responsiveness to endo- and exogenous stimuli, and their intrinsic biocompatibility, they have been utilised in various drug delivery systems (DDSs) to date. In this review, we provide an overview of the developments in spiropyran-based DDSs. The benefits and drawbacks of utilising spiropyrans in drug delivery are assessed and an outline of spiropyran-based drug delivery systems is presented.
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Affiliation(s)
| | | | - Silvia Giordani
- School of Chemical Sciences, Dublin City University (DCU), Dublin, Ireland
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21
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Liao Y, Ye Z, Qian M, Wang X, Guo Y, Han G, Song Y, Hou J, Liu Y. Photoactive NO hybrids with pseudo-zero-order release kinetics for antimicrobial applications. Org Biomol Chem 2021; 18:5473-5480. [PMID: 32643744 DOI: 10.1039/d0ob00564a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Bacterial infection is a major threat to the health and life of humans due to the development of drug resistance, which is related to biofilm formation. Nitric oxide (NO) has emerged as an important factor in regulating biofilm formation. In order to harness the potential benefits of NO and develop effective antibacterial agents, we designed and synthesized a new class of NO hybrids in which the active scaffold benzothienoazepine was tagged with a nitroso group and further conjugated with quaternary ammoniums or phosphoniums. The temporal release of NO from these hybrids can be achieved by photoactivation. Interestingly, the NO release follows a pseudo-zero-order kinetics, which is easily determined by measuring the fluorescent benzothienoazepine or NO. Compared to the positive control ciprofloxacin, the NO hybrid with triphenyl phosphonium (TPP) exhibited more effective activity against S. aureus biofilm in darkness. Irradiation of the NO hybrid led to higher inhibition against S. aureus biofilm compared to the parental NO hybrid in darkness or the corresponding NO-released product, indicating the combined effect of NO and the NO-released product. Therefore, this new class of NO hybrids includes very promising antimicrobial agents and this work provides a new way for the design of highly effective antimicrobial agents.
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Affiliation(s)
- Yongfang Liao
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China.
| | - Zizhen Ye
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China.
| | - Meng Qian
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China.
| | - Xing Wang
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China.
| | - Yuda Guo
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China.
| | - Guifang Han
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China.
| | - Yuguang Song
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China.
| | - Jingli Hou
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China.
| | - Yangping Liu
- Tianjin Key Laboratory on Technologies Enabling Development of Clinical Therapeutics and Diagnostics, School of Pharmacy, Tianjin Medical University, Tianjin 300070, P. R. China.
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22
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Phototoxicity of Ultraviolet-A against the Whitefly Bemisia tabaci and Its Compatibility with an Entomopathogenic Fungus and Whitefly Parasitoid. OXIDATIVE MEDICINE AND CELLULAR LONGEVITY 2021; 2021:2060288. [PMID: 34336086 PMCID: PMC8289603 DOI: 10.1155/2021/2060288] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Accepted: 06/09/2021] [Indexed: 11/17/2022]
Abstract
Ultraviolet (UV) radiation significantly affects insect life and, as a result, has been widely used to control different invertebrate pests. The current results demonstrate that when Bemisia tabaci first instar nymphs are exposed to UV-A light for 12, 24, 48, and 72 h, their developmental and biological parameters are negatively affected by UV-A exposure; the effect increased with an increase in exposure time. We hypothesized that UV-A light is compatible with other biological control agents. Results showed that when the entomopathogenic fungus Cordyceps fumosorosea was applied to third instar nymphs of B. tabaci previously exposed to UV-A light, the LC50 was 3.4% lower after 72 h of exposure to UV-A light compared to the control. However, when the fungus was exposed to UV-A light, its virulence decreased with an increase in UV-A exposure time. The parasitism rate of Encarsia formosa against 24 h UV-A-exposed third instar nymphs of B. tabaci increased while the adult emergence from parasitized nymphs was not affected after UV-A light exposure. Parasitism rate was significantly reduced however following E. formosa exposure to UV-A light; but again, adult emergence was not affected from parasitized nymphs. The percentage mortality of E. formosa increased with increasing exposure time to UV-A light. The enzyme activity of SOD, CAT, GST, and AChE and the energy reserve contents were negatively affected due to UV-A exposure. Collectively, this study has demonstrated that UV-A light significantly suppresses the immune system of B. tabaci and that UV-A light is compatible with other biological control agents if it is applied separately from the biological agent.
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Josa‐Culleré L, Llebaria A. In the Search for Photocages Cleavable with Visible Light: An Overview of Recent Advances and Chemical Strategies. CHEMPHOTOCHEM 2020. [DOI: 10.1002/cptc.202000253] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Laia Josa‐Culleré
- Laboratory of Medicinal Chemistry Institute for Advanced Chemistry of Catalonia (IQAC-CSIC) Jordi Girona 18–26 08034 Barcelona Spain
| | - Amadeu Llebaria
- Laboratory of Medicinal Chemistry Institute for Advanced Chemistry of Catalonia (IQAC-CSIC) Jordi Girona 18–26 08034 Barcelona Spain
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24
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Dai SY, Yang D. A Visible and Near-Infrared Light Activatable Diazocoumarin Probe for Fluorogenic Protein Labeling in Living Cells. J Am Chem Soc 2020; 142:17156-17166. [PMID: 32870680 DOI: 10.1021/jacs.0c08068] [Citation(s) in RCA: 35] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Chemical modification of proteins in living cells permits valuable glimpses into the molecular interactions that underpin dynamic cellular events. While genetic engineering methods are often preferred, selective labeling of endogenous proteins in a complex intracellular milieu with chemical approaches represents a significant challenge. In this study, we report novel diazocoumarin compounds that can be photoactivated by visible (430-490 nm) and near-infrared light (800 nm) irradiation to photo-uncage reactive carbene intermediates, which could subsequently undergo an insertion reaction with concomitant fluorescence "turned on". With these new molecules in hand, we have developed a new approach for rapid, selective, and fluorogenic labeling of endogenous protein in living cells. By using CA-II and eDHFR as model proteins, we demonstrated that subcellular localization of proteins can be precisely visualized by live-cell imaging and protein levels can be reliably quantified in multiple cell types using flow cytometry. Dynamic protein regulations such as hypoxia-induced CA-IX accumulation can also be detected. In addition, by two-photon excitation with an 800 nm laser, cell-selective labeling can also be achieved with spatially controlled irradiation. Our method circumvents the cytotoxicity of UV light and obviates the need for introducing external reporters with "click chemistries". We believe that this approach of fluorescence labeling of endogenous protein by bioorthogonal photoirradiation opens up exciting opportunities for discoveries and mechanistic interrogation in chemical biology.
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Affiliation(s)
- Sheng-Yao Dai
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Dan Yang
- Morningside Laboratory for Chemical Biology, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
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25
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Meer AMVD, Berger T, Müller F, Foldenauer AC, Johnen S, Walter P. Establishment and Characterization of a Unilateral UV-Induced Photoreceptor Degeneration Model in the C57Bl/6J Mouse. Transl Vis Sci Technol 2020; 9:21. [PMID: 32879777 PMCID: PMC7443125 DOI: 10.1167/tvst.9.9.21] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 11/01/2019] [Accepted: 11/21/2019] [Indexed: 01/10/2023] Open
Abstract
Purpose To investigate whether UV irradiation of the mouse eye can induce photoreceptor degeneration, producing a phenotype reminiscent of the rd10 mouse, left eyes of female C57Bl/6J mice were irradiated with a UV LED array (370 nm). A lens was placed between the cornea and LED, allowing illumination of about one-third of the retina. The short-term and long-term effects on the retina were evaluated. Methods First, a dose escalation study, in which corneal dosages between 2.8 and 9.3 J/cm2 were tested, was performed. A dosage of 7.5 J/cm2 was chosen for the following characterization study. Before and after irradiation slit-lamp examinations, full-field electroretinography, spectral domain optical coherence tomography and macroscopy were performed. After different time spans (5 days to 12 weeks) the animals were sacrificed and the retinae used for immunohistochemistry or multielectrode array testing. Right eyes served as untreated controls. Results In treated eyes, spectral domain optical coherence tomography revealed a decrease in retinal thickness to 53%. Full-field electroretinography responses decreased significantly from day 5 on in treated eyes. Multielectrode array recordings revealed oscillatory potentials with a mean frequency of 5.2 ± 0.6 Hz in the illuminated area. Structural changes in the retina were observed in immunohistochemical staining. Conclusions UV irradiation proved to be efficient in inducing photoreceptor degeneration in the mouse retina, while leaving the other retinal layers largely intact. The irradiated area of treated eyes can be identified easily in spectral domain optical coherence tomography and in explanted retinae. Translational Relevance This study provides information on anatomic and functional changes in UV-treated retina, enabling the use of this model for retinitis pigmentosa-like diseases in animals suited for experimental retinal surgery.
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Affiliation(s)
| | - Tanja Berger
- Department of Medical Statistics, RWTH Aachen University, Aachen, Germany
| | - Frank Müller
- Institute of Complex Systems, Cellular Biophysics, ICS-4, Forschungszentrum Jülich GmbH, Jülich, Germany
| | - Ann Christina Foldenauer
- Department of Medical Statistics, RWTH Aachen University, Aachen, Germany.,Department of Clinical Research Fraunhofer Institute for Molecular Biology and Applied Ecology (IME) Branch for Translational Medicine and Pharmacology (TMP), Frankfurt, Germany
| | - Sandra Johnen
- Department of Ophthalmology, University Hospital RWTH Aachen, Aachen, Germany
| | - Peter Walter
- Department of Ophthalmology, University Hospital RWTH Aachen, Aachen, Germany
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26
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Arias-Alpizar G, Kong L, Vlieg RC, Rabe A, Papadopoulou P, Meijer MS, Bonnet S, Vogel S, van Noort J, Kros A, Campbell F. Light-triggered switching of liposome surface charge directs delivery of membrane impermeable payloads in vivo. Nat Commun 2020; 11:3638. [PMID: 32686667 PMCID: PMC7371701 DOI: 10.1038/s41467-020-17360-9] [Citation(s) in RCA: 51] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 06/25/2020] [Indexed: 01/14/2023] Open
Abstract
Surface charge plays a fundamental role in determining the fate of a nanoparticle, and any encapsulated contents, in vivo. Herein, we describe, and visualise in real time, light-triggered switching of liposome surface charge, from neutral to cationic, in situ and in vivo (embryonic zebrafish). Prior to light activation, intravenously administered liposomes, composed of just two lipid reagents, freely circulate and successfully evade innate immune cells present in the fish. Upon in situ irradiation and surface charge switching, however, liposomes rapidly adsorb to, and are taken up by, endothelial cells and/or are phagocytosed by blood resident macrophages. Coupling complete external control of nanoparticle targeting together with the intracellular delivery of encapsulated (and membrane impermeable) cargos, these compositionally simple liposomes are proof that advanced nanoparticle function in vivo does not require increased design complexity but rather a thorough understanding of the fundamental nano-bio interactions involved.
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Affiliation(s)
- Gabriela Arias-Alpizar
- Department o Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300, RA, Leiden, The Netherlands
| | - Li Kong
- Department o Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300, RA, Leiden, The Netherlands
- Tongji School of Pharmacy, Huazhong University of Science and Technology, 430030, Wuhan, P.R. China
| | - Redmar C Vlieg
- Leiden Institute of Physics (LION), Leiden University, P.O. Box 9504, 2300, RA, Leiden, The Netherlands
| | - Alexander Rabe
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230, Odense, Denmark
- BioNTech RNA Pharmaceuticals GmbH, An der Goldgrube 12, 55131, Mainz, Germany
| | - Panagiota Papadopoulou
- Department o Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300, RA, Leiden, The Netherlands
| | - Michael S Meijer
- Department of Metals in Catalysis, Biomimetics & Inorganic Materials (MCBIM), Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300, RA, Leiden, The Netherlands
| | - Sylvestre Bonnet
- Department of Metals in Catalysis, Biomimetics & Inorganic Materials (MCBIM), Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300, RA, Leiden, The Netherlands
| | - Stefan Vogel
- Department of Physics, Chemistry and Pharmacy, University of Southern Denmark, 5230, Odense, Denmark
| | - John van Noort
- Leiden Institute of Physics (LION), Leiden University, P.O. Box 9504, 2300, RA, Leiden, The Netherlands
| | - Alexander Kros
- Department o Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300, RA, Leiden, The Netherlands.
| | - Frederick Campbell
- Department o Supramolecular & Biomaterials Chemistry, Leiden Institute of Chemistry (LIC), Leiden University, P.O. Box 9502, 2300, RA, Leiden, The Netherlands.
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Ali SM, Ali U. An approach to design a wristwatch for the protection of the human skin damage induced by ultraviolet and infrared radiations. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2020; 36:278-289. [PMID: 32187717 DOI: 10.1111/phpp.12551] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/27/2019] [Revised: 02/24/2020] [Accepted: 03/13/2020] [Indexed: 01/09/2023]
Abstract
BACKGROUND Ultraviolet radiations (UV) absorbed by the skin can drive photochemical reactions which range from sunburn to skin cancer. The repeated exposure to Infrared radiations (IR) induces the heat into the skin, which causes dehydration and erythema as an immediate effect. This heat activates the metalloproteinase enzyme that reduces the number of procollagen and collagen fibers in the dermal skin, which results premature skin aging. This work aims to design a protective measure in order to avoid these damages. METHOD The proposed protective measure is a wristwatch with an alert alarm which can sense UV and IR radiations. Whenever UV/IR radiation levels exceed beyond the defined limits, alarm will be activated that warns the user to apply protective measures. These radiations are detected by SI1145 digital UV Index/IR/visible light sensor and assigned, using Arduino, to an appropriate UV index and IR radiation levels. RESULTS The IR and UV readings were recorded several times and at four different hours through the day. The readings showed its highest value at 10 am and 2 pm, which are considered the highest sun intensity. The other readings were at 6 am and 5 pm and considered the least dangerous hours. CONCLUSION The data collected from the sensor are used to program the alarm. To combine all components, a PCB and a prototype were designed and printed. The UV/IR wristwatch is applicable to alert the user from the continuous and accumulated harmful effects of the radiations and enable them to seek protective measures.
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Affiliation(s)
- Syed Mehmood Ali
- Department of Biomedical Engineering, College of Engineering, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
| | - Uzma Ali
- Department of Public Health, College of Public Health, Imam Abdulrahman Bin Faisal University, Dammam, Saudi Arabia
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Skarupova D, Vostalova J, Rajnochova Svobodova A. Ultraviolet A protective potential of plant extracts and phytochemicals. Biomed Pap Med Fac Univ Palacky Olomouc Czech Repub 2020; 164:1-22. [PMID: 32188958 DOI: 10.5507/bp.2020.010] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Accepted: 03/04/2020] [Indexed: 12/25/2022] Open
Abstract
Chronic exposure to solar radiation is related to an increased incidence of various skin disorders, including premature skin aging and melanoma and non-melanoma skin cancers. Ultraviolet (UV) photons in particular are responsible for skin damage. Solar UV photons mainly belong to UVA wavebands, however UVA radiation has been mostly ignored for a long time. At the cellular level, UVA photons mainly provoke indirect oxidative damage to biomolecules via the massive generation of unstable and highly reactive compounds. Human skin has several effective mechanisms that forestall, repair and eliminate damage caused by solar radiation. Regardless, some damage persists and can accumulate with chronic exposure. Therefore, conscious protection against solar radiation (UVB+UVA) is necessary. Besides traditional types of photoprotection such as sunscreen use, new strategies are being searched for and developed. One very popular protective strategy is the application of phytochemicals as active ingredients of photoprotection preparations instead of synthetic chemicals. Phytochemicals usually possess additional biological activities besides absorbing the energy of photons, and those properties (e.g. antioxidant, anti-inflammatory) magnify the protective potential of phytochemicals and extracts. Therefore, compounds of natural origin are in the interest of researchers as well as developers. In this review, only studies on UVA protection with well-documented experimental conditions are summarized. This article includes 17 well standardized plant extracts (Camellia sinensis (L.) Kuntze, Silybum marianum L. Gaertn., Punica granatum L., Polypodium aureum L., Vaccinium myrtillus L., Lonicera caerulea L., Thymus vulgaris L., Opuntia ficus-indica (L.) Mill., Morinda citrifolia L., Aloe vera (L.) Burm.f., Oenothera paradoxa Hudziok, Galinsoga parviflora Cav., Galinsoga quadriradiata Ruiz et Pavón, Hippophae rhamnoides L., Cola acuminata Schott & Endl., Theobroma cacao L. and Amaranthus cruentus L.) and 26 phytochemicals.
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Affiliation(s)
- Denisa Skarupova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 3, 775 15 Olomouc, Czech Republic
| | - Jitka Vostalova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 3, 775 15 Olomouc, Czech Republic
| | - Alena Rajnochova Svobodova
- Department of Medical Chemistry and Biochemistry, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 3, 775 15 Olomouc, Czech Republic
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Sayed AEDH, Saleh SMM, Mitani H. Comparative histology of wild-type and p53-deficient medaka (Oryzias latipes): nephrotoxic effect of ultraviolet A radiation. Photochem Photobiol Sci 2020; 19:261-273. [PMID: 31994581 DOI: 10.1039/c9pp00236g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
Ultraviolet radiation is an ecological factor that directly affects terrestrial organisms through suppression of immunity or damage to internal organs. The present study assessed the effects of ultraviolet A (UVA) radiation on the kidneys of both wild-type (WT) and p53-deficient medaka (Oryzias latipes) and evaluated which strain was more resistant to the effects of UVA. Fish were divided into four groups: control group 1 (Cwt and Cp53), kept for 3 days without UVA exposure; group 2 (1wt and 1p53), fish exposed daily to UVA for 1 h day-1 for 3 days; group 3 (2wt and 2p53), fish exposed daily to UVA for 2 h day-1 for 3 days; and group 4 (3wt and 3p53), fish exposed daily to UVA for 3 h day-1 for 3 days. Samples of tissues were obtained 24 h after UVA exposure. The most obvious histopathological changes induced by UVA radiation in kidney tissues of both strains of medaka (WT and p53-deficient) were high levels of vacuolation of tubular cells followed by necrosis. The tubular segments lost their normal shape which appeared like a network structure and their cells with clear cytoplasm. Necrosis of lymphoid tissues and spots of brown pigmentation (possibly melanomacrophages) were sporadically seen in interstitial lymphoid tissues, while shrinkage of glomeruli, diminution of periodic acid-Schiff staining, and increased amount of collagenous fibers were observed. Our results confirmed the harmful effects of UVA radiation on kidney tissues of both WT and p53-deficient medaka. However, WT medaka was affected more than p53-deficient medaka.
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Affiliation(s)
- Alaa El-Din H Sayed
- Zoology department, Faculty of Science, Assiut University, 71516 Assiut, Egypt.
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30
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Effects of an antioxidant protective topical formulation on retinal tissue of UV-exposed rabbits. Int Ophthalmol 2020; 40:925-933. [PMID: 31916063 DOI: 10.1007/s10792-019-01259-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2019] [Accepted: 12/28/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE The aim of this study has been to evaluate the protective effect of a topical antioxidant formulation containing riboflavin, d-α-tocopheryl polyethylene glycol (TPGS vitamin E), proline, glycine, lysine, and leucine against UV-B-induced damage in in vivo rabbit retina. METHODS Twenty male albino rabbits were used. Animals were divided into four groups of five animals each. Control group did not receive any UV irradiation. The first group (IG) was irradiated with a UV-A lamp for 30 min; the second (IG30) and the third (IG60) groups received UV irradiation for 30 and 60 min, respectively, and were topically treated with 1 drop (approximately 50 µl) of the antioxidant formulation, every 15 min, starting 1 h before irradiation, until the end of the UC exposure. RESULTS The retina of IG group showed extensive destruction of the retinal pigment epithelium (RPE) and of the cones and rods layer. The retina of G30 group showed a lesser destruction of both RPE and cones and rods layer. In the G60 group, retina showed an irregular thickening of the RPE, with massive edema of the inner and outer layer immediately adjacent together with a significant reduction of the photoreceptor number. CONCLUSION Our results demonstrate that a topical application of eye drops containing riboflavin, d-α-tocopheryl polyethylene glycol (TPGS vitamin E), proline, glycine, lysine, and leucine counteracts UV retinal injury in exposed retina rabbits.
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31
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van Rixel VHS, Ramu V, Auyeung AB, Beztsinna N, Leger DY, Lameijer LN, Hilt ST, Le Dévédec SE, Yildiz T, Betancourt T, Gildner MB, Hudnall TW, Sol V, Liagre B, Kornienko A, Bonnet S. Photo-Uncaging of a Microtubule-Targeted Rigidin Analogue in Hypoxic Cancer Cells and in a Xenograft Mouse Model. J Am Chem Soc 2019; 141:18444-18454. [PMID: 31625740 DOI: 10.1021/jacs.9b07225] [Citation(s) in RCA: 77] [Impact Index Per Article: 15.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Marine alkaloid rigidins are cytotoxic compounds known to kill cancer cells at nanomolar concentrations by targeting the microtubule network. Here, a rigidin analogue containing a thioether group was "caged" by coordination of its thioether group to a photosensitive ruthenium complex. In the dark, the coordinated ruthenium fragment prevented the rigidin analogue from inhibiting tubulin polymerization and reduced its toxicity in 2D cancer cell line monolayers, 3D lung cancer tumor spheroids (A549), and a lung cancer tumor xenograft (A549) in nude mice. Photochemical activation of the prodrug upon green light irradiation led to the photosubstitution of the thioether ligand by water, thereby releasing the free rigidin analogue capable of inhibiting the polymerization of tubulin. In cancer cells, such photorelease was accompanied by a drastic reduction of cell growth, not only when the cells were grown in normoxia (21% O2) but also remarkably in hypoxic conditions (1% O2). In vivo, low toxicity was observed at a dose of 1 mg·kg-1 when the compound was injected intraperitoneally, and light activation of the compound in the tumor led to 30% tumor volume reduction, which represents the first demonstration of the safety and efficacy of ruthenium-based photoactivated chemotherapy compounds in a tumor xenograft.
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Affiliation(s)
| | | | | | | | - David Y Leger
- Laboratoire PEIRENE EA7500, Faculté de Pharmacie , Université de Limoges , 2 rue du Dr Marcland , 87025 Limoges , France
| | | | | | | | | | | | | | | | - Vincent Sol
- Laboratoire PEIRENE EA7500, Faculté de Pharmacie , Université de Limoges , 2 rue du Dr Marcland , 87025 Limoges , France
| | - Bertrand Liagre
- Laboratoire PEIRENE EA7500, Faculté de Pharmacie , Université de Limoges , 2 rue du Dr Marcland , 87025 Limoges , France
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32
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Schmalwieser AW, Klotz B, Schwarzmann M, Baumgartner DJ, Schreder J, Schauberger G, Blumthaler M. The Austrian UVA-Network. Photochem Photobiol 2019; 95:1258-1266. [PMID: 31017671 PMCID: PMC6852124 DOI: 10.1111/php.13111] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2019] [Accepted: 04/17/2019] [Indexed: 11/28/2022]
Abstract
The ultraviolet‐A (UVA) part of the solar spectrum at the Earth's surface is an essential environmental factor but continuous long‐time monitoring of UVA radiation is rarely done. In Austria, three existing stations of the UV monitoring network have been upgraded with UVA broadband instruments. At each station, one instrument measures global UVA irradiance and—in parallel—a second instrument measures diffuse irradiance. Recent and past measurements are available via a web page. This paper describes the used instruments, calibration and quality assurance and control procedures. Global and diffuse UVA measurements during a period of up to 5 years are presented. Data indicate clear annual courses and an increase of UVA with altitude by 8–9% per 1000 m. In the first half of the year, UVA radiation is higher than in the second half, due to less cloudiness. In Vienna (153 m asl), the mean daily global UVA radiant exposure in summer is almost as high as at Mt. Gerlitzen (1540 m asl), equalizing the altitude effect, due to less cloudiness. However, in winter, the UVA radiant exposure at Mt. Gerlitzen is double as high, as in Vienna.
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Affiliation(s)
- Alois W Schmalwieser
- Unit of Physiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Barbara Klotz
- Division of Biomedical Physics, Medical University Innsbruck, Innsbruck, Austria
| | - Michael Schwarzmann
- Division of Biomedical Physics, Medical University Innsbruck, Innsbruck, Austria
| | - Dietmar J Baumgartner
- Kanzelhöhe Observatory for Solar and Environmental Research, University of Graz, Graz, Austria
| | | | - Günther Schauberger
- Unit of Physiology and Biophysics, University of Veterinary Medicine, Vienna, Austria
| | - Mario Blumthaler
- Division of Biomedical Physics, Medical University Innsbruck, Innsbruck, Austria
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33
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Yel M, Güven T, Türker H. Effects of ultraviolet radiation on the stratum corneum of skin in mole rats. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1016/j.jrras.2014.08.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Mustafa Yel
- Gazi University, Gazi Education of Faculty, Department of Biology, Teknikokullar, Ankara, 06500, Turkey
| | - Turan Güven
- Gazi University, Gazi Education of Faculty, Department of Biology, Teknikokullar, Ankara, 06500, Turkey
| | - Hüseyin Türker
- Ankara University, Science Faculty, Department of Biology, Besevler, Ankara, Cankaya, 06500, Turkey
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Türker H. Histological and ultrastructural analyses of mole rats lung cells exposed to ultraviolet radiation. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1016/j.jrras.2014.09.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Hüseyin Türker
- Ankara University, Science Faculty, Department of Biology, Ankara, 06500, Turkey
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35
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Yel M, Türker H. Ultrastructural effects of ultraviolet C radiation on the stratum basale of mole rats epidermis. JOURNAL OF RADIATION RESEARCH AND APPLIED SCIENCES 2019. [DOI: 10.1016/j.jrras.2014.06.005] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Affiliation(s)
- Mustafa Yel
- Gazi University, Gazi Education Faculty, Department of Biology, Teknikokullar, Ankara, 06500, Turkey
| | - Hüseyin Türker
- Ankara University, Science Faculty, Department of Biology, Besevler Kampusu J Blok, Teknikokullar, Ankara, 06500, Turkey
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36
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Kong L, Campbell F, Kros A. DePEGylation strategies to increase cancer nanomedicine efficacy. NANOSCALE HORIZONS 2019; 4:378-387. [PMID: 32254090 DOI: 10.1039/c8nh00417j] [Citation(s) in RCA: 64] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
Abstract
To maximize drug targeting to solid tumors, cancer nanomedicines with prolonged circulation times are required. To this end, poly(ethylene glycol) (PEG) has been widely used as a steric shield of nanomedicine surfaces to minimize serum protein absorption (opsonisation) and subsequent recognition and clearance by cells of the mononuclear phagocyte system (MPS). However, PEG also inhibits interactions of nanomedicines with target cancer cells, limiting the effective drug dose that can be reached within the target tumor. To overcome this dilemma, nanomedicines with stimuli-responsive cleavable PEG functionality have been developed. These benefit from both long circulation lifetimes en route to the targeted tumor as well as efficient drug delivery to target cancer cells. In this review, various stimuli-responsive strategies to dePEGylate nanomedicines within the tumor microenvironment will be critically reviewed.
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Affiliation(s)
- Li Kong
- Leiden Institute of Chemistry - Supramolecular and Biomaterial Chemistry, Leiden University, Einsteinweg 55, 2333CC Leiden, The Netherlands.
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37
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Moreno NC, Garcia CCM, Munford V, Rocha CRR, Pelegrini AL, Corradi C, Sarasin A, Menck CFM. The key role of UVA-light induced oxidative stress in human Xeroderma Pigmentosum Variant cells. Free Radic Biol Med 2019; 131:432-442. [PMID: 30553972 DOI: 10.1016/j.freeradbiomed.2018.12.012] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/15/2018] [Revised: 12/08/2018] [Accepted: 12/12/2018] [Indexed: 01/11/2023]
Abstract
The UVA component of sunlight induces DNA damage, which are basically responsible for skin cancer formation. Xeroderma Pigmentosum Variant (XP-V) patients are defective in the DNA polymerase pol eta that promotes translesion synthesis after sunlight-induced DNA damage, implying in a clinical phenotype of increased frequency of skin cancer. However, the role of UVA-light in the carcinogenesis of these patients is not completely understood. The goal of this work was to characterize UVA-induced DNA damage and the consequences to XP-V cells, compared to complemented cells. DNA damage were induced in both cells by UVA, but lesion removal was particularly affected in XP-V cells, possibly due to the oxidation of DNA repair proteins, as indicated by the increase of carbonylated proteins. Moreover, UVA irradiation promoted replication fork stalling and cell cycle arrest in the S-phase for XP-V cells. Interestingly, when cells were treated with the antioxidant N-acetylcysteine, all these deleterious effects were consistently reverted, revealing the role of oxidative stress in these processes. Together, these results strongly indicate the crucial role of oxidative stress in UVA-induced cytotoxicity and are of interest for the protection of XP-V patients.
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Affiliation(s)
- Natália Cestari Moreno
- Department of Microbiology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil
| | | | - Veridiana Munford
- Department of Microbiology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil
| | | | - Alessandra Luiza Pelegrini
- Department of Microbiology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Camila Corradi
- Department of Microbiology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil
| | - Alain Sarasin
- Laboratory of Genetic Instability and Oncogenesis, UMR8200 CNRS, University Paris-Sud, Institut Gustave Roussy, Villejuif, France
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Krzywon A, Widel M. Bystander Me45 Melanoma Cells Increase Damaging Effect in UVC-irradiated Cells. Photochem Photobiol 2019; 95:1019-1028. [PMID: 30613987 DOI: 10.1111/php.13080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2018] [Accepted: 12/26/2018] [Indexed: 11/30/2022]
Abstract
The aim of our study was to investigate the possible mechanism(s) of the bystander effect induced by UVC light in malignant melanoma Me45 cells that were co-incubated with irradiated cells of the same line. We have found that the UVC band effectively generated apoptosis, premature senescence, single and double DNA strand breaks and reduced clonogenic survival of bystander cells. However, in the feedback response, the bystander cells intensified damage in directly irradiated cells, especially seen at the level of apoptosis and survival of clonogenic cells. Pretreatment of bystander cells with inhibitor of inducible nitric oxide synthase blocks this signaling. It seems that the mediators of this phenomenon produced and secreted by neighboring cells are superoxide, nitric oxide and TGF-β. The reverse deleterious effect caused by cells not exposed to UVC in directly exposed cells is opposed to the protective/rescue effect exerted by the bystander cells in the case of ionizing radiation known in the literature. Whether this opposite adverse effect is a feature of only Me45 melanoma cells or whether it is a general phenomenon occurring between cells of other types exposed to ultraviolet radiation requires further research.
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Affiliation(s)
- Aleksandra Krzywon
- Biosystems Group, Faculty of Automatics, Electronics and Informatics, Institute of Automatic Control, Silesian University of Technology, Gliwice, Poland
| | - Maria Widel
- Biosystems Group, Faculty of Automatics, Electronics and Informatics, Institute of Automatic Control, Silesian University of Technology, Gliwice, Poland
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Ibrahim ATA, AbouelFadl KY, Osman AGM. Ultraviolet A-induced hematotoxic and genotoxic potential in Nile tilapiaOreochromis niloticus. Photochem Photobiol Sci 2019; 18:1495-1502. [DOI: 10.1039/c8pp00189h] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Fish as an aquatic organism could be harmed by various levels of solar ultraviolet radiation (UVA).
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Affiliation(s)
- Ahmed Th. A. Ibrahim
- Department of Zoology
- Faculty of Science
- Assiut University (New Valley Branch)
- Egypt
| | - Khaled Y. AbouelFadl
- Lecturer of Fish biology and Ecology
- Faculty of Fish and Fisheries Technology
- Aswan University
- Egypt
| | - Alaa G. M. Osman
- Department of Zoology
- Faculty of Science
- Al-Azhar University (Assiut Branch)
- 71524 Assiut
- Egypt
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40
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Chandran R, Kumar M, Kesavan L, Jacob RS, Gunasekaran S, Lakshmi S, Sadasivan C, Omkumar R. Cellular calcium signaling in the aging brain. J Chem Neuroanat 2019; 95:95-114. [DOI: 10.1016/j.jchemneu.2017.11.008] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2017] [Revised: 09/03/2017] [Accepted: 11/07/2017] [Indexed: 12/21/2022]
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Moreno NC, Garcia CCM, Rocha CRR, Munford V, Menck CFM. ATR/Chk1 Pathway is Activated by Oxidative Stress in Response to UVA Light in Human Xeroderma Pigmentosum Variant Cells. Photochem Photobiol 2018; 95:345-354. [PMID: 30362123 DOI: 10.1111/php.13041] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Accepted: 10/03/2018] [Indexed: 12/14/2022]
Abstract
The crucial role of DNA polymerase eta in protecting against sunlight-induced tumors is evidenced in Xeroderma Pigmentosum Variant (XP-V) patients, who carry mutations in this protein and present increased frequency of skin cancer. XP-V cellular phenotypes may be aggravated if proteins of DNA damage response (DDR) pathway are blocked, as widely demonstrated by experiments with UVC light and caffeine. However, little is known about the participation of DDR in XP-V cells exposed to UVA light, the wavelengths patients are mostly exposed. Here, we demonstrate the participation of ATR kinase in protecting XP-V cells after receiving low UVA doses using a specific inhibitor, with a remarkable increase in sensitivity and γH2AX signaling. Corroborating ATR participation in UVA-DDR, a significant increase in Chk1 protein phosphorylation, as well as S-phase cell cycle arrest, is also observed. Moreover, the participation of oxidative stress is supported by the antioxidant action of N-acetylcysteine (NAC), which significantly protects XP-V cells from UVA light, even in the presence of the ATR inhibitor. These findings indicate that the ATR/Chk1 pathway is activated to control UVA-induced oxidatively generated DNA damage and emphasizes the role of ATR kinase as a mediator of genomic stability in pol eta defective cells.
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Affiliation(s)
- Natália Cestari Moreno
- Department of Microbiology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil
| | | | | | - Veridiana Munford
- Department of Microbiology, Institute of Biomedical Sciences, University of Sao Paulo, Sao Paulo, SP, Brazil
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42
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Kadina A, Kietrys AM, Kool ET. RNA Cloaking by Reversible Acylation. Angew Chem Int Ed Engl 2018; 57:3059-3063. [PMID: 29370460 PMCID: PMC5842138 DOI: 10.1002/anie.201708696] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 01/18/2018] [Indexed: 11/08/2022]
Abstract
We describe a selective and mild chemical approach for controlling RNA hybridization, folding, and enzyme interactions. Reaction of RNAs in aqueous buffer with an azide-substituted acylating agent (100-200 mm) yields several 2'-OH acylations per RNA strand in as little as 10 min. This poly-acylated ("cloaked") RNA is strongly blocked from hybridization with complementary nucleic acids, from cleavage by RNA-processing enzymes, and from folding into active aptamer structures. Importantly, treatment with a water-soluble phosphine triggers a Staudinger reduction of the azide groups, resulting in spontaneous loss of acyl groups ("uncloaking"). This fully restores RNA folding and biochemical activity.
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Affiliation(s)
- Anastasia Kadina
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | - Anna M Kietrys
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
| | - Eric T Kool
- Department of Chemistry, Stanford University, Stanford, CA, 94305, USA
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Affiliation(s)
- Anastasia Kadina
- Department of Chemistry; Stanford University; Stanford CA 94305 USA
| | - Anna M. Kietrys
- Department of Chemistry; Stanford University; Stanford CA 94305 USA
| | - Eric T. Kool
- Department of Chemistry; Stanford University; Stanford CA 94305 USA
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Cardoso Dos Santos M, Goetz J, Bartenlian H, Wong KL, Charbonnière LJ, Hildebrandt N. Autofluorescence-Free Live-Cell Imaging Using Terbium Nanoparticles. Bioconjug Chem 2018; 29:1327-1334. [DOI: 10.1021/acs.bioconjchem.8b00069] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- M. Cardoso Dos Santos
- NanoBioPhotonics (nanofret.com), Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, Univeristé Paris-Sud, CNRS, CEA, 91405 Orsay Cedex, France
| | - J. Goetz
- Laboratoire d’Ingénierie Moléculaire Appliquée à l’Analyse (LIMAA), Institut Pluridisciplinaire Hubert Curien (IPHC), CNRS, Université de Strasbourg, 67087 Strasbourg Cedex, France
| | - H. Bartenlian
- NanoBioPhotonics (nanofret.com), Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, Univeristé Paris-Sud, CNRS, CEA, 91405 Orsay Cedex, France
| | - K.-L. Wong
- Department of Chemistry, Hong Kong Baptist University, Hong Kong SAR, Hong Kong
| | - L. J. Charbonnière
- Laboratoire d’Ingénierie Moléculaire Appliquée à l’Analyse (LIMAA), Institut Pluridisciplinaire Hubert Curien (IPHC), CNRS, Université de Strasbourg, 67087 Strasbourg Cedex, France
| | - N. Hildebrandt
- NanoBioPhotonics (nanofret.com), Institute for Integrative Biology of the Cell (I2BC), Université Paris-Saclay, Univeristé Paris-Sud, CNRS, CEA, 91405 Orsay Cedex, France
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45
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Krzywon A, Widel M, Fujarewicz K, Skonieczna M, Rzeszowska-Wolny J. Modulation by neighboring cells of the responses and fate of melanoma cells irradiated with UVA. JOURNAL OF PHOTOCHEMISTRY AND PHOTOBIOLOGY B-BIOLOGY 2017; 178:505-511. [PMID: 29241122 DOI: 10.1016/j.jphotobiol.2017.12.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Revised: 12/07/2017] [Accepted: 12/08/2017] [Indexed: 02/03/2023]
Abstract
UVA radiation, which accounts for about 95% of the solar spectrum, contributes to and may be the etiological factor of skin cancers of which malignant melanoma is the most aggressive. UVA causes oxidative stress in various types of cells in the skin, keratinocyte, melanocytes, and fibroblasts, which is responsible for its cytotoxic effect. Here we used a transwell system to explore how the responses of melanoma cells to a low dose of UVA (20kJ/m2, ~10% of the minimal erythema dose) are influenced by neighboring co-cultured melanoma cells or fibroblasts. This dose had a low toxicity for melanoma cells, but after irradiation, co-culture with non-irradiated melanoma cells caused a strong decline in their viability and an increased frequency of apoptosis, whereas co-culture with fibroblast exerted a protective effect on irradiated melanoma cells. At the same time, the presence of non-irradiated cells, especially fibroblasts, decreased the level of UVA-induced reactive oxygen and nitrogen species. Interleukins efficiently produced by fibroblasts seem to be main players in these effects. Our studies reveal that coexistence of fibroblasts with melanoma cells may strongly modulate the direct action and may change bystander effects exerted by UVA light. Similar modulation of the effect of UVA on melanoma cells in vivo by bystander-like signaling from neighboring cells would have consequences for the development of malignant melanoma.
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Affiliation(s)
- Aleksandra Krzywon
- Biosystems Group, Institute of Automatic Control, Faculty of Automatics, Electronics and Informatics, Silesian University of Technology, 16 Akademicka Street, 44-100 Gliwice, Poland
| | - Maria Widel
- Biosystems Group, Institute of Automatic Control, Faculty of Automatics, Electronics and Informatics, Silesian University of Technology, 16 Akademicka Street, 44-100 Gliwice, Poland.
| | - Krzysztof Fujarewicz
- Biosystems Group, Institute of Automatic Control, Faculty of Automatics, Electronics and Informatics, Silesian University of Technology, 16 Akademicka Street, 44-100 Gliwice, Poland
| | - Magdalena Skonieczna
- Biosystems Group, Institute of Automatic Control, Faculty of Automatics, Electronics and Informatics, Silesian University of Technology, 16 Akademicka Street, 44-100 Gliwice, Poland
| | - Joanna Rzeszowska-Wolny
- Biosystems Group, Institute of Automatic Control, Faculty of Automatics, Electronics and Informatics, Silesian University of Technology, 16 Akademicka Street, 44-100 Gliwice, Poland
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46
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Sharma P, Montes de Oca MK, Alkeswani AR, McClees SF, Das T, Elmets CA, Afaq F. Tea polyphenols for the prevention of UVB-induced skin cancer. PHOTODERMATOLOGY PHOTOIMMUNOLOGY & PHOTOMEDICINE 2017; 34:50-59. [PMID: 29044724 DOI: 10.1111/phpp.12356] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 09/30/2017] [Indexed: 12/16/2022]
Abstract
Skin cancer is the most common type of cancer with increasing incidence rate and public health burden. Solar ultraviolet (UV) radiation causes an array of damaging cellular and molecular events that eventually lead to the development of skin cancer. Despite increased awareness about sun protection, the exposure rate remains high with less than 15% of men and 30% of women using sunscreen on a regular basis. Therefore, there is an imperative need for the development of novel preventive approaches. Skin cancer chemoprevention using phytochemicals either as dietary supplements or by topical applications has gained considerable attention due to their low toxicity, availability, and anticarcinogenic properties. Tea, the second most commonly consumed beverage in the world, is a rich source of promising phytochemicals known as polyphenols. In this review, we discuss the findings of various in vitro, in vivo and human studies signifying the chemopreventive effects of tea polyphenols against UVB-induced skin cancer. This is accomplished by exploring the role of tea polyphenols in DNA repair, inflammation, oxidative stress, signaling pathways, and epigenetics. Finally, this review discusses a variety of innovative delivery methods that enhance the photochemopreventive effects of tea polyphenols against skin cancer.
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Affiliation(s)
- Pooja Sharma
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Mary K Montes de Oca
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Amena R Alkeswani
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Sarah F McClees
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Tanushree Das
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Craig A Elmets
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL, USA.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Farrukh Afaq
- Department of Dermatology, University of Alabama at Birmingham, Birmingham, AL, USA.,Comprehensive Cancer Center, University of Alabama at Birmingham, Birmingham, AL, USA
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47
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Kong L, Poulcharidis D, Schneider GF, Campbell F, Kros A. Spatiotemporal Control of Doxorubicin Delivery from "Stealth-Like" Prodrug Micelles. Int J Mol Sci 2017; 18:E2033. [PMID: 28937592 PMCID: PMC5666715 DOI: 10.3390/ijms18102033] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2017] [Revised: 09/14/2017] [Accepted: 09/18/2017] [Indexed: 12/14/2022] Open
Abstract
In the treatment of cancer, targeting of anticancer drugs to the tumor microenvironment is highly desirable. Not only does this imply accurate tumor targeting but also minimal drug release en route to the tumor and maximal drug release once there. Here we describe high-loading, "stealth-like" doxorubicin micelles as a pro-drug delivery system, which upon light activation, leads to burst-like doxorbicin release. Through this approach, we show precise spatiotemporal control of doxorubicin delivery to cells in vitro.
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Affiliation(s)
- Li Kong
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Dimitrios Poulcharidis
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Gregory F Schneider
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Frederick Campbell
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
| | - Alexander Kros
- Supramolecular and Biomaterials Chemistry, Leiden Institute of Chemistry, Einsteinweg 55, 2333 CC Leiden, The Netherlands.
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Antimicrobial efficacy of irradiation with visible light on oral bacteria in vitro: a systematic review. Future Med Chem 2017; 9:1557-1574. [PMID: 28792235 DOI: 10.4155/fmc-2017-0051] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
AIM Resistances to antibiotics employed for treatment of infectious diseases have increased to alarming numbers making it more and more difficult to treat diseases caused by microorganisms resistant to common antibiotics. Consequently, novel methods for successful inactivation of pathogens are required. In this instance, one alternative could be application of light for treatment of topical infections. Antimicrobial properties of UV light are well documented, but due to its DNA-damaging properties use for medical purposes is limited. In contrast, irradiation with visible light may be more promising. METHODS Literature was systematically screened for research concerning inactivation of main oral bacterial species by means of visible light. RESULTS Inactivation of bacterial species, especially pigmented ones, in planktonic state showed promising results. There is a lack of research examining the situation when organized as biofilms. CONCLUSION More research concerning situation in a biofilm state is required.
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49
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Dietary Modulation of Oxidative Stress in Alzheimer's Disease. Int J Mol Sci 2017; 18:ijms18071583. [PMID: 28753984 PMCID: PMC5536070 DOI: 10.3390/ijms18071583] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2017] [Revised: 07/03/2017] [Accepted: 07/12/2017] [Indexed: 02/07/2023] Open
Abstract
Cells generate unpaired electrons, typically via oxygen- or nitrogen-based by-products during normal cellular respiration and under stressed situations. These pro-oxidant molecules are highly unstable and may oxidize surrounding cellular macromolecules. Under normal conditions, the reactive oxygen or nitrogen species can be beneficial to cell survival and function by destroying and degrading pathogens or antigens. However, excessive generation and accumulation of the reactive pro-oxidant species over time can damage proteins, lipids, carbohydrates, and nucleic acids. Over time, this oxidative stress can contribute to a range of aging-related degenerative diseases such as cancer, diabetes, macular degeneration, and Alzheimer’s, and Parkinson’s diseases. It is well accepted that natural compounds, including vitamins A, C, and E, β-carotene, and minerals found in fruits and vegetables are powerful anti-oxidants that offer health benefits against several different oxidative stress induced degenerative diseases, including Alzheimer’s disease (AD). There is increasing interest in developing anti-oxidative therapeutics to prevent AD. There are contradictory and inconsistent reports on the possible benefits of anti-oxidative supplements; however, fruits and vegetables enriched with multiple anti-oxidants (e.g., flavonoids and polyphenols) and minerals may be highly effective in attenuating the harmful effects of oxidative stress. As the physiological activation of either protective or destructive pro-oxidant behavior remains relatively unclear, it is not straightforward to relate the efficacy of dietary anti-oxidants in disease prevention. Here, we review oxidative stress mediated toxicity associated with AD and highlight the modulatory roles of natural dietary anti-oxidants in preventing AD.
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50
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Ali A, Rashid MA, Huang QY, Lei CL. Influence of UV-A radiation on oxidative stress and antioxidant enzymes in Mythimna separata (Lepidoptera: Noctuidae). ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:8392-8398. [PMID: 28185177 DOI: 10.1007/s11356-017-8514-7] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Accepted: 01/26/2017] [Indexed: 05/13/2023]
Abstract
Abiotic stress factors, including ultraviolet (UV) radiation, significantly affect insect life. UV-A radiation (320-400 nm) has been widely used for insect control since it increases the production of ROS and causes oxidative cell damage. In the present study, we evaluated the effects of UV-A irradiation on an important pest in China, the ear-cutting caterpillar, Mythimna separata (Lepidoptera: Noctuidae). We exposed 3-day-old M. separata adults to UV-A radiation for different periods of time (0, 30, 60, 90, and 120 min) and evaluated the resulting total antioxidant capacity and the activity of the antioxidant enzymes superoxide dismutase, catalase, peroxidase, and glutathione-S-transferase. The total antioxidant capacity significantly increased after exposure to UV-A radiation for 60 min but decreased after 90 and 120 min of exposure, compared with the control. The antioxidant activity of glutathione-S-transferase, superoxide dismutase, catalase, and peroxidase increased after 60-min exposure, and it was decreased at the longest exposure period 120 min. The longest exposure time period relatively activates the xenobiotic detoxifying enzymes like glutathione-S-transferase, superoxide dismutase, catalase, and peroxidase enzymes. The longest duration of UV-A radiation may cooperate with pesticide detoxification mechanism in insects, making them more susceptible to insecticides. Our results demonstrated that UV irradiation causes oxidative stress, affects the activity of antioxidant enzymes, and disturbs the physiology of M. separata adults.
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Affiliation(s)
- Arif Ali
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Muhammad Adnan Rashid
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Qiu Ying Huang
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Chao-Liang Lei
- Hubei Insect Resources Utilization and Sustainable Pest Management Key Laboratory, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China.
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