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Jing M, Han G, Wan J, Zong W, Liu R. Differential eco-toxicological responses toward Eisenia fetida exposed to soil contaminated with naphthalene and typical metabolites. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:44800-44814. [PMID: 38954347 DOI: 10.1007/s11356-024-34149-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/19/2023] [Accepted: 06/24/2024] [Indexed: 07/04/2024]
Abstract
Naphthalene (NAP) was frequently detected in polycyclic aromatic hydrocarbons (PAHs)-contaminated soil, and its residues may pose an eco-toxicological threat to soil organisms. The toxic effects of NAP were closely tied to phenolic and quinone metabolites in biological metabolism. However, the present knowledge concerning the eco-toxicological impacts of NAP metabolites at the animal level is scanty. Here, we assessed the differences in the eco-toxicological responses of Eisenia fetida (E. fetida) in NAP, 1-naphthol (1-NAO) or 1,4-naphthoquinone (1,4-NQ) contaminated soils. NAP, 1-NAO, and 1,4-NQ exposure triggered the onset of oxidative stress as evidenced by the destruction of the antioxidant enzyme system. The lipid peroxidation and DNA oxidative damage levels induced by 1-NAO and 1,4-NQ were higher than those of NAP. The elevation of DNA damage varied considerably depending on differences in oxidative stress and the direct mode of action of NAP or its metabolites with DNA. All three toxicants induced different degrees of physiological damage to the body wall, but only 1, 4-NQ caused the shedding of intestinal epithelial cells. The integrated biomarker response for different exposure times illustrated that the comprehensive toxicity at the animal level was 1,4-NQ > 1-NAO > NAP, and the time-dependent trends of oxidative stress responses induced by the three toxicants were similar. At the initial stage, the antioxidant system of E. fetida responded positively to the provocation, but the ability of E. fetida to resist stimulation decreased with the prolongation of time resulting in provocation oxidative damage. This study would provide new insights into the toxicological effects and biohazard of PAHs on soil animals.
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Affiliation(s)
- Mingyang Jing
- Shandong Urban Construction Vocational College, 4657# Tourism Road, Jinan, Shandong, 250100, P.R. China
| | - Guangye Han
- Shandong Academy of Environmental Sciences Co., Ltd, Licheng, 12777# Zhenyuan Road, Jinan, Shandong, 250100, P.R. China
| | - Jingqiang Wan
- School of Environmental Science and Engineering, America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, P.R. China
| | - Wansong Zong
- College of Geography and Environment, Shandong Normal University, 88# East Wenhua Road, Jinan, 250014, Shandong, China
| | - Rutao Liu
- School of Environmental Science and Engineering, America CRC for Environment & Health, Shandong University, 72# Jimo Binhai Road, Qingdao, Shandong, 266237, P.R. China.
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2
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Rmadi N, Kotti N, Bahloul E, Dhouib F, Sellami I, Sellami K, Jmal Hammami K, Masmoudi ML, Turki H, Hajjaji M. Role of chemical exposure in the incidence of vitiligo: a case–control study in Tunisia. Libyan J Med 2023; 18:2132628. [DOI: 10.1080/19932820.2022.2132628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
Affiliation(s)
- Nehla Rmadi
- Occupational Department and Health Disease Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Nada Kotti
- Occupational Department and Health Disease Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Emna Bahloul
- Dermatology Department, Hedi Chaker University Hospital, University of Sfax, Tunisia
| | - Feriel Dhouib
- Occupational Department and Health Disease Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Imen Sellami
- Occupational Department and Health Disease Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Khadija Sellami
- Dermatology Department, Hedi Chaker University Hospital, University of Sfax, Tunisia
| | - Kaouthar Jmal Hammami
- Occupational Department and Health Disease Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Mohamed Larbi Masmoudi
- Occupational Department and Health Disease Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
| | - Hamida Turki
- Dermatology Department, Hedi Chaker University Hospital, University of Sfax, Tunisia
| | - Mounira Hajjaji
- Occupational Department and Health Disease Hedi Chaker University Hospital, University of Sfax, Sfax, Tunisia
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3
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Nishimaki-Mogami T, Ito S, Cui H, Akiyama T, Tamehiro N, Adachi R, Wakamatsu K, Ikarashi Y, Kondo K. A cell-based evaluation of human tyrosinase-mediated metabolic activation of leukoderma-inducing phenolic compounds. J Dermatol Sci 2022; 108:77-86. [PMID: 36567223 DOI: 10.1016/j.jdermsci.2022.12.002] [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: 03/22/2022] [Revised: 09/04/2022] [Accepted: 12/08/2022] [Indexed: 12/15/2022]
Abstract
BACKGROUND Chemical leukoderma is a skin depigmentation disorder induced through contact with certain chemicals, most of which have a p-substituted phenol structure similar to the melanin precursor tyrosine. The tyrosinase-catalyzed oxidation of phenols to highly reactive o-quinone metabolites is a critical step in inducing leukoderma through the production of melanocyte-specific damage and immunological responses. OBJECTIVE Our aim was to find an effective method to evaluate the formation of o-quinone by human tyrosinase and subsequent cellular reactions. METHODS Human tyrosinase-expressing 293T cells were exposed to various phenolic compounds, after which the reactive o-quinones generated were identified as adducts of cellular thiols. We further examined whether the o-quinone formation induces reductions in cellular GSH or viability. RESULTS Among the chemicals tested, all 7 leukoderma-inducing phenols/catechol (rhododendrol, raspberry ketone, monobenzone, 4-tert-butylphenol, 4-tert-butylcatechol, 4-S-cysteaminylphenol and p-cresol) were oxidized to o-quinone metabolites and were detected as adducts of cellular glutathione and cysteine, leading to cellular glutathione reduction, whereas 2-S-cysteaminylphenol and 4-n-butylresorcinol were not. In vitro analysis using a soluble variant of human tyrosinase revealed a similar substrate-specificity. Some leukoderma-inducing phenols exhibited tyrosinase-dependent cytotoxicity in this cell model and in B16BL6 melanoma cells where tyrosinase expression was effectively modulated by siRNA knockdown. CONCLUSION We developed a cell-based metabolite analytical method to detect human tyrosinase-catalyzed formation of o-quinone from phenolic compounds by analyzing their thiol-adducts. The detailed analysis of each metabolite was superior in sensitivity and specificity compared to cytotoxicity assays for detecting known leukoderma-inducing phenols, providing an effective strategy for safety evaluation of chemicals.
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Affiliation(s)
| | - Shosuke Ito
- Institute for Melanin Chemistry, Fujita Health University, Aichi, Japan.
| | - Hongyan Cui
- National Institute of Health Sciences, Kanagawa, Japan
| | | | | | - Reiko Adachi
- National Institute of Health Sciences, Kanagawa, Japan
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4
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Vinardell MP, Maddaleno AS, Mitjans M. Melanogenesis and Hypopigmentation: The Case of Vitiligo. Indian J Dermatol 2022; 67:524-530. [PMID: 36865864 PMCID: PMC9971791 DOI: 10.4103/ijd.ijd_1067_21] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Abstract
Melanocytes are highly specialized dendritic cells that synthesize and store melanin in subcellular organelles called melanosomes, before transfer to keratinocytes. Melanin is a complex pigment that provides colour and photoprotection to the skin, hair and eyes. The process of synthesis of melanin is called melanogenesis and is regulated by various mechanisms and factors such as genetic, environmental and endocrine factors. The knowledge of the pigmentation process is important to understand hypopigmentation disorders such as vitiligo and also to design adequate treatments. In the present work, we review the signalling pathways involved in vitiligo. Finally, current therapies and treatments including topical, oral and phototherapies are discussed and described, emphasizing future therapies based on different pigmentation mechanisms.
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Affiliation(s)
- M. Pilar Vinardell
- From the Department Biochemistry and Physiology of the Universitat de Barcelona, Spain
| | | | - Montserrat Mitjans
- From the Department Biochemistry and Physiology of the Universitat de Barcelona, Spain
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5
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Seervai RNH, Sinha A, Kulkarni RP. Mechanisms of dermatologic toxicities to immune checkpoint inhibitor cancer therapies. Clin Exp Dermatol 2022; 47:1928-1942. [PMID: 35844072 DOI: 10.1111/ced.15332] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/11/2022] [Indexed: 11/30/2022]
Abstract
The discovery of immune checkpoint inhibition (ICI) sparked a revolution in the era of targeted anticancer therapy. While monoclonal antibodies targeting the CTLA-4 and PD-1 axes have improved survival in patients with advanced cancers, these immunotherapies are associated with a wide spectrum of dermatologic immune-related adverse events (irAEs). Several publications have addressed the clinical and histopathologic classification of these skin-directed irAEs, their impact on antitumor immunity and survival, and the critical role of supportive oncologic dermatology in their management. Here, we review the current understanding of the mechanistic drivers of immune-related skin toxicities with a focus on inflammatory, immunobullous, melanocyte/pigment-related reactions. We detail the specific immune-based mechanisms that may underlie different cutaneous reactions. We also discuss potential mechanisms as they relate to non-cutaneous irAEs and potential overlap with cutaneous irAEs, techniques to study differences in immune-related versus de novo skin reactions, and how treatment of these adverse events impacts cancer treatment, patient quality of life, and overall survival. An improved understanding of the mechanistic basis of cutaneous irAEs will allow us to develop and utilize blood-based biomarkers that could help ultimately predict onset and/or severity of these irAEs and to implement rational mechanistic-based treatment strategies that are targeted to the irAEs while potentially avoiding abrogating anti-tumor effect of ICIs.
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Affiliation(s)
- Riyad N H Seervai
- Department of Internal Medicine, Providence Portland Medical Center, Portland, Oregon, 97213.,Medical Scientist Training Program, Baylor College of Medicine, 77030, Houston, Texas, USA.,Department of Dermatology, Baylor College of Medicine, 77030, Houston, Texas, USA
| | - Avilasha Sinha
- Department of Dermatology, Baylor College of Medicine, 77030, Houston, Texas, USA.,Department of Medicine, Baylor College of Medicine, 77030, Houston, Texas, USA
| | - Rajan P Kulkarni
- Department of Dermatology, Oregon Health and Science University, Portland, Oregon 97239, USA.,Department of Biomedical Engineering, Oregon Health and Science University, 97239, Portland, OR.,Cancer Early Detection Advanced Research Center, Knight Cancer Institute, Oregon Health and Science University, 97239, Portland, OR.,Operative Care Division, VA Portland Health Care System, 92739, Portland, OR
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6
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Gu L, Maeda K. Metabolism of Enantiomers of Rhododendrol in Human Skin Homogenate. Metabolites 2022; 12:metabo12050412. [PMID: 35629916 PMCID: PMC9143848 DOI: 10.3390/metabo12050412] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Revised: 04/25/2022] [Accepted: 04/30/2022] [Indexed: 02/04/2023] Open
Abstract
We reported that raspberry ketone (RK) is produced from rhododendrol (RD) in excised mouse skin. We confirmed that RK is also produced from RD in human skin homogenates. We also observed more conversion of RD to RK when the oxidized form of nicotinamide adenine dinucleotide (NAD+), a coenzyme of alcohol dehydrogenase (ADH), was added to human skin homogenates. Chiral column analysis of the consumption of RD enantiomers in human skin homogenates also showed that more of the R enantiomers of RD remained than the S enantiomers of RD. This suggests that the S-enantiomer of RD is more easily oxidized in human skin. We confirmed that RD is partially metabolized to RK in human skin, thus suggesting that ADH in the skin may be the main cause of the appearance of this oxidation product.
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Affiliation(s)
- Lihao Gu
- Bionics Program, Tokyo University of Technology Graduate School, 1404-1 Katakura-machi, Hachioji City 192-0982, Tokyo, Japan;
| | - Kazuhisa Maeda
- School of Bioscience and Biotechnology, Tokyo University of Technology, 1404-1 Katakura-machi, Hachioji City 192-0982, Tokyo, Japan
- Correspondence:
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7
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Ye Z, Chen J, Du P, Ni Q, Li B, Zhang Z, Wang Q, Cui T, Yi X, Li C, Li S. Metabolomics Signature and Potential Application of Serum Polyunsaturated Fatty Acids Metabolism in Patients With Vitiligo. Front Immunol 2022; 13:839167. [PMID: 35222431 PMCID: PMC8866849 DOI: 10.3389/fimmu.2022.839167] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2021] [Accepted: 01/24/2022] [Indexed: 12/17/2022] Open
Abstract
Vitiligo is a depigmented skin disorder caused by a variety of factors, including autoimmune, metabolic disturbance or their combined effect, etc. Non-targeted metabolomic analyses have denoted that dysregulated fatty acids metabolic pathways are involved in the pathogenesis of vitiligo. However, the exact category of fatty acids that participate in vitiligo development and how they functionally affect CD8+ T cells remain undefined. We aimed to determine the difference in specific fatty acids among vitiligo patients and healthy individuals and to investigate their association with clinical features in patients with vitiligo. Serum levels of fatty acids in 48 vitiligo patients and 28 healthy individuals were quantified by performing ultra-performance liquid chromatography-tandem mass spectrometry. Univariate and multivariate analyses were carried out to evaluate the significance of differences. Moreover, flow cytometry was used to explore the effect of indicated fatty acids on the function of CD8+ T cells derived from patients with vitiligo. We demonstrated that serological level of alpha-linolenic acid (ALA) was markedly upregulated, while that of arachidonic acid (ARA), arachidic acid (AA) and behenic acid were significantly downregulated in patients with vitiligo. Moreover, ALA levels were positively associated with vitiligo area scoring index (VASI) and ARA was a probable biomarker for vitiligo. We also revealed that supplementation with ARA or nordihydroguaiaretic acid (NDGA) could suppress the function of CD8+ T cells. Our results showed that vitiligo serum has disorder-specific phenotype profiles of fatty acids described by dysregulated metabolism of polyunsaturated fatty acids. Supplementation with ARA or NDGA might promote vitiligo treatment. These findings provide novel insights into vitiligo pathogenesis that might add to therapeutic options.
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Affiliation(s)
- Zhubiao Ye
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Jianru Chen
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Pengran Du
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Qingrong Ni
- Department of Dermatology, The Medical Center of Air Force of People's Liberation Army, Forth Military Medical University, Beijing, China
| | - Baizhang Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Zhe Zhang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Qi Wang
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Tingting Cui
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Xiuli Yi
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Chunying Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
| | - Shuli Li
- Department of Dermatology, Xijing Hospital, Fourth Military Medical University, Xi'an, China
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8
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Zhu R, Sun Q, Li J, Li L, Gao Q, Wang Y, Fang L. para-Selective hydroxylation of alkyl aryl ethers. Chem Commun (Camb) 2021; 57:13190-13193. [PMID: 34816833 DOI: 10.1039/d1cc06210g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
para-Selective hydroxylation of alkyl aryl ethers is established, which proceeds with a ruthenium(II) catalyst, hypervalent iodine(III) and trifluoroacetic anhydride via a radical mechanism. This protocol tolerates a wide scope of substrates and provides a facile and efficient method for preparing clinical drugs monobenzone and pramocaine on a gram scale.
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Affiliation(s)
- Runqing Zhu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, People's Republic of China.
| | - Qianqian Sun
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, People's Republic of China.
| | - Jing Li
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, People's Republic of China.
| | - Luohao Li
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, People's Republic of China.
| | - Qinghe Gao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, People's Republic of China.
| | - Yakun Wang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, People's Republic of China.
| | - Lizhen Fang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, People's Republic of China.
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9
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Dermal Drug Delivery of Phytochemicals with Phenolic Structure via Lipid-Based Nanotechnologies. Pharmaceuticals (Basel) 2021; 14:ph14090837. [PMID: 34577536 PMCID: PMC8471500 DOI: 10.3390/ph14090837] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2021] [Revised: 08/17/2021] [Accepted: 08/20/2021] [Indexed: 12/11/2022] Open
Abstract
Phenolic compounds are a large, heterogeneous group of secondary metabolites found in various plants and herbal substances. From the perspective of dermatology, the most important benefits for human health are their pharmacological effects on oxidation processes, inflammation, vascular pathology, immune response, precancerous and oncological lesions or formations, and microbial growth. Because the nature of phenolic compounds is designed to fit the phytochemical needs of plants and not the biopharmaceutical requirements for a specific route of delivery (dermal or other), their utilization in cutaneous formulations sets challenges to drug development. These are encountered often due to insufficient water solubility, high molecular weight and low permeation and/or high reactivity (inherent for the set of representatives) and subsequent chemical/photochemical instability and ionizability. The inclusion of phenolic phytochemicals in lipid-based nanocarriers (such as nanoemulsions, liposomes and solid lipid nanoparticles) is so far recognized as a strategic physico-chemical approach to improve their in situ stability and introduction to the skin barriers, with a view to enhance bioavailability and therapeutic potency. This current review is focused on recent advances and achievements in this area.
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10
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A secondary role for hypoxia and HIF1 in the regulation of (IFNγ-induced) PD-L1 expression in melanoma. Cancer Immunol Immunother 2021; 71:529-540. [PMID: 34268602 PMCID: PMC8854324 DOI: 10.1007/s00262-021-03007-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2020] [Accepted: 07/04/2021] [Indexed: 11/17/2022]
Abstract
Cancer cells are able to escape immune surveillance by upregulating programmed death ligand 1 (PD-L1). A key regulator of PD-L1 expression is transcriptional stimulation by the IFNγ/JAK/STAT pathway. Recent studies suggest that hypoxia can induce PD-L1 expression. As hypoxia presents a hallmark of solid tumor development, hypoxic control of PD-L1 expression may affect the efficacy of cancer immunotherapy. This study aims to explore the hypoxic regulation of PD-L1 expression in human melanoma, and its interaction with IFNγ-induced PD-L1 expression. Analysis of the cutaneous melanoma dataset from the cancer genome atlas revealed a significant correlation of the HIF1-signaling geneset signature with PD-L1 mRNA expression. However, this correlation is less pronounced than other key pathways known to control PD-L1 expression, including the IFNγ/JAK/STAT pathway. This secondary role of HIF1 in PD-L1 regulation was confirmed by analyzing single-cell RNA-sequencing data of 33 human melanoma tissues. Interestingly, PD-L1 expression in these melanoma tissues was primarily found in macrophages. However, also in these cells STAT1, and not HIF1, displayed the most pronounced correlation with PD-L1 expression. Moreover, we observed that hypoxia differentially affects PD-L1 expression in human melanoma cell lines. Knockdown of HIF1 expression indicated a minor role for HIF1 in regulating PD-L1 expression. A more pronounced influence of hypoxia was found on IFNγ-induced PD-L1 mRNA expression, which is controlled at a 952 bp PD-L1 promoter fragment. These findings, showing the influence of hypoxia on IFNγ-induced PD-L1 expression, are relevant for immunotherapy, as both IFNγ and hypoxia are frequently present in the tumor microenvironment.
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11
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Pattarathitiwat P, Chinvongamorn C, Sansenya S. Evaluation of Cyanide Content, Volatile Compounds Profile, and Biological Properties of Fresh and Boiled Sliced Thai Bamboo Shoot ( Dendrocalamus asper Back.). Prev Nutr Food Sci 2021; 26:92-99. [PMID: 33859964 PMCID: PMC8027047 DOI: 10.3746/pnf.2021.26.1.92] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
This study evaluated the cyanide content, bio-active compounds profile, volatile compounds profile, and biological activity of fresh and boiled sliced bamboo. Cyanide was only detected in fresh bamboo shoots, at a content of 140.40±5.34 mg/kg. Furthermore, the fresh bamboo shoots extracts had free radical scavenging properties, as demonstrated by ABTS・+ and DPPH・ assays, and contained phytochemical compounds, such as flavonoid, terpenoid, and reducing sugar. Indeed, the total phenolic and flavonoid contents were 12.12±0.12 mg gallic acid equivalent/dw and 1.60±0.11 mg quercetin equivalent/dw, respectively. In addition, these extracts demonstrated inhibitory activity against α-glucosidase (61.30±0.45%), α-amylase (37.00±1.82%), and tyrosinase (26.57±0.57%). Some volatile compounds, such as 2-methoxyphenol and 2-pentylfuran, show α-glucosidase inhibitory activity, and these compounds exerted α-amylase inhibitory activity in the fresh sliced bamboo shoots. The major volatile compound 4-methylphenol (68.15%), which exerts tyrosinase inhibitory activity, was also detected in fresh sliced bamboo shoots. The boiled sliced bamboo shoots extracts also contained bio-active compounds and exhibited biological activity similar to those in the fresh sliced bamboo shoots extracts. However, the boiling process and sliced technique reduced the bio-active compounds and biological properties as well as some of volatile compounds.
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Affiliation(s)
| | - Chakorn Chinvongamorn
- Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani 12110, Thailand
| | - Sompong Sansenya
- Department of Chemistry, Faculty of Science and Technology, Rajamangala University of Technology Thanyaburi, Pathum Thani 12110, Thailand
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12
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Mu X, Liu J, Yuan L, Huang Y, Qian L, Wang C. The pigmentation interference of bisphenol F and bisphenol A. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2020; 266:115139. [PMID: 32663677 DOI: 10.1016/j.envpol.2020.115139] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 06/24/2020] [Accepted: 06/27/2020] [Indexed: 06/11/2023]
Abstract
Bisphenol A (BPA) and bisphenol F (BPF) are widely distributed in the environment and daily consumptions, leading to exposure toward human and environmental animals. The potential risk of bisphenol analogs on pigment and skin health is not well documented. In this study, we found that 0.05 mg/L BPF (tolerated daily intake (TDI) value of BPA) affected the particle size and color density of zebrafish melanin. While BPA caused less depigmentation effect toward zebrafish with effective concentration of 5.0 mg/L. The downregulation of melanin synthases induced by BPF is associated with the reduction in melanin. Molecular dynamics indicated that both BPF and BPA could act as ligands of zebrafish and human Tyr family proteins; however, these compounds have completely different energetics and spatial steric effects, potentially explaining their varying depigmentation effects. Additionally, an in vitro assay using A375 melanoma cells demonstrated that the inhibitory effect of BPF on human melanin production was primarily attributed to Tyr inhibition. These findings provide an important basis for understanding the molecular mechanisms of BPF and BPA in melanin inhibition, and the results reflect the skin pigmentation interference risk of these compounds, which are ubiquitous in everyday personal products.
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Affiliation(s)
- Xiyan Mu
- Fishery Resource and Environment Research Center, Chinese Academy of Fishery Sciences, Beijing, People's Republic of China.
| | - Jia Liu
- Fishery Resource and Environment Research Center, Chinese Academy of Fishery Sciences, Beijing, People's Republic of China; College of Sciences, China Agricultural University, Beijing, People's Republic of China
| | - Lilai Yuan
- Fishery Resource and Environment Research Center, Chinese Academy of Fishery Sciences, Beijing, People's Republic of China
| | - Ying Huang
- Fishery Resource and Environment Research Center, Chinese Academy of Fishery Sciences, Beijing, People's Republic of China
| | - Le Qian
- College of Sciences, China Agricultural University, Beijing, People's Republic of China
| | - Chengju Wang
- College of Sciences, China Agricultural University, Beijing, People's Republic of China
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13
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Alomar A, Marrón Hernández M, Bittencourt F. Residual Pigment Islands Treated With 88% Phenol Peeling in a Woman With Universal Vitiligo. ACTAS DERMO-SIFILIOGRAFICAS 2020; 112:284-285. [PMID: 32931752 DOI: 10.1016/j.ad.2020.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2019] [Revised: 12/05/2019] [Accepted: 01/13/2020] [Indexed: 11/18/2022] Open
Affiliation(s)
- A Alomar
- Universidad Autónoma de Barcelona. Clínica Dermatológica Moragas, Barcelona, España.
| | - M Marrón Hernández
- Universidad Central de Venezuela, cursante del Máster de Dermatología avanzada de la Universidad Autónoma de Barcelona, Barcelona, España
| | - F Bittencourt
- Faculdade de Medicina do ABC, cursante del Máster de Dermatología avanzada de la Universidad Autónoma de Barcelona, Barcelona, España
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14
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Okamura K, Abe Y, Naka I, Ohashi J, Yagami A, Matsunaga K, Kobayashi Y, Fukai K, Tanemura A, Katayama I, Masui Y, Ito A, Yamashita T, Nagai H, Nishigori C, Oiso N, Aoyama Y, Araki Y, Saito T, Hayashi M, Hozumi Y, Suzuki T. Genome-wide association study identifies CDH13 as a susceptibility gene for rhododendrol-induced leukoderma. Pigment Cell Melanoma Res 2020; 33:826-833. [PMID: 32558222 DOI: 10.1111/pcmr.12904] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2020] [Revised: 05/30/2020] [Accepted: 06/09/2020] [Indexed: 11/28/2022]
Abstract
Racemic RS-4-(4-hydroxyphenyl)-2-butanol (rhododendrol; trade name: Rhododenol [RD]), which is used in topical skin-lightening cosmetics, was unexpectedly reported in Japan to induce leukoderma or vitiligo called RD-induced leukoderma (RIL) after repeated application. To our knowledge, no studies have investigated chemical-induced vitiligo pathogenesis on a genome-wide scale. Here, we conducted a genome-wide association study (GWAS) for 147 cases and 112 controls. CDH13, encoding a glycosylphosphatidylinositol-anchored protein called T-cadherin (T-cad), was identified as the strongest RIL susceptibility gene. RD sensitivity was remarkably increased by T-cad knockdown in cultured normal human melanocytes. Furthermore, we confirmed tyrosinase upregulation and downregulation of the anti-apoptotic molecules (BCL-2 and BCL-XL), suggesting that T-cad is associated with RD via tyrosinase or apoptotic pathway regulation. Finally, monobenzyl ether of hydroquinone sensitivity also tended to increase with T-cad knockdown, suggesting that the T-cad could be a candidate susceptibility gene for RIL and other chemical-induced vitiligo forms. This is the first GWAS for chemical-induced vitiligo, and it could be a useful model for studying the disease's genetic aspects.
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Affiliation(s)
- Ken Okamura
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yuko Abe
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Izumi Naka
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Jun Ohashi
- Department of Biological Sciences, Graduate School of Science, The University of Tokyo, Tokyo, Japan
| | - Akiko Yagami
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, Japan.,Department of Allergology, Fujita Health University School of Medicine, Aichi, Japan
| | - Kayoko Matsunaga
- Department of Dermatology, Fujita Health University School of Medicine, Aichi, Japan.,Department of Integrative Medical Science for Allergic Disease, Fujita Health University School of Medicine, Aichi, Japan
| | - Yui Kobayashi
- Department of Dermatology, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Kazuyoshi Fukai
- Department of Dermatology, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Atsushi Tanemura
- Department of Dermatology, Course of Integrated Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan
| | - Ichiro Katayama
- Department of Dermatology, Course of Integrated Medicine, Graduate School of Medicine, Osaka University, Osaka, Japan.,Department of Pigmentation Research and Therapeutics, Graduate School of Medicine, Osaka City University, Osaka, Japan
| | - Yukiko Masui
- Division of Dermatology, Nagata Clinic, Niigata, Japan.,Department of Dermatology, Niigata University Graduate School of Medicine and Dental Sciences, Niigata, Japan
| | - Akiko Ito
- Division of Dermatology, Nagata Clinic, Niigata, Japan.,Department of Dermatology, Niigata University Graduate School of Medicine and Dental Sciences, Niigata, Japan
| | - Toshiharu Yamashita
- Department of Dermatology, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Hiroshi Nagai
- Division of Dermatology, Department of Internal Related, Graduate School of Medicine, Kobe University, Hyogo, Japan
| | - Chikako Nishigori
- Division of Dermatology, Department of Internal Related, Graduate School of Medicine, Kobe University, Hyogo, Japan
| | - Naoki Oiso
- Department of Dermatology, Faculty of Medicine, Kinki University, Osaka, Japan
| | - Yumi Aoyama
- Department of Dermatology, Kawasaki Medical School, Okayama, Japan
| | - Yuta Araki
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Toru Saito
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Masahiro Hayashi
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Yutaka Hozumi
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
| | - Tamio Suzuki
- Department of Dermatology, Faculty of Medicine, Yamagata University, Yamagata, Japan
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15
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Kammeyer A, Willemsen KJ, Ouwerkerk W, Bakker WJ, Ratsma D, Pronk SD, Smit NPM, Luiten RM. Mechanism of action of 4-substituted phenols to induce vitiligo and antimelanoma immunity. Pigment Cell Melanoma Res 2019; 32:540-552. [PMID: 30767390 PMCID: PMC6850206 DOI: 10.1111/pcmr.12774] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 12/20/2018] [Accepted: 02/01/2019] [Indexed: 12/22/2022]
Abstract
Monobenzone is a 4-substituted phenol that can induce vitiligo and antimelanoma immunity. We investigated the influence of the chemical structure on the biological activity of a series of structurally related 4-substituted phenols. All phenols inhibited cellular melanin synthesis, and eight of ten phenols inhibited tyrosinase activity, using the MBTH assay. These phenols also induced glutathione (GSH) depletion, indicative of quinone formation and protein thiol binding, which can increase the immunogenicity of melanosomal proteins. Specific T-cell activation was found upon stimulation with phenol-exposed pigmented cells, which also reacted with unexposed cells. In contrast, 4-tertbutylphenol induced immune activation was not restricted to pigment cells, analogous to contact sensitization. We conclude that 4-substituted phenols can induce specific T-cell responses against melanocytes and melanoma cells, also acting at distant, unexposed body sites, and may confer a risk of chemical vitiligo. Conversely, these phenols may be applicable to induce specific antimelanoma immunity.
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Affiliation(s)
- Arthur Kammeyer
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, Amsterdam Infection & Immunity Institute, Cancer Center AmsterdamUniversity of AmsterdamAmsterdamThe Netherlands
| | - Karin J. Willemsen
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, Amsterdam Infection & Immunity Institute, Cancer Center AmsterdamUniversity of AmsterdamAmsterdamThe Netherlands
| | - Wouter Ouwerkerk
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, Amsterdam Infection & Immunity Institute, Cancer Center AmsterdamUniversity of AmsterdamAmsterdamThe Netherlands
- Department of Clinical Epidemiology, Biostatistics and Bioinformatics, Amsterdam University Medical CentersUniversity of AmsterdamAmsterdamThe Netherlands
| | - Walbert J. Bakker
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, Amsterdam Infection & Immunity Institute, Cancer Center AmsterdamUniversity of AmsterdamAmsterdamThe Netherlands
| | - Danielle Ratsma
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, Amsterdam Infection & Immunity Institute, Cancer Center AmsterdamUniversity of AmsterdamAmsterdamThe Netherlands
| | - Sebas D. Pronk
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, Amsterdam Infection & Immunity Institute, Cancer Center AmsterdamUniversity of AmsterdamAmsterdamThe Netherlands
| | - Nico P. M. Smit
- Department of Clinical Chemistry and Laboratory MedicineLeiden University Medical CenterLeidenThe Netherlands
| | - Rosalie M. Luiten
- Department of Dermatology and Netherlands Institute for Pigment Disorders, Amsterdam University Medical Centers, Amsterdam Infection & Immunity Institute, Cancer Center AmsterdamUniversity of AmsterdamAmsterdamThe Netherlands
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