1
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Wang L, Zhang RK, Sang P, Xie YX, Zhang Y, Zhou ZH, Wang KK, Zhou FM, Ji XB, Liu WJ, Qiu JG, Jiang BH. HK2 and LDHA upregulation mediate hexavalent chromium-induced carcinogenesis, cancer development and prognosis through miR-218 inhibition. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 279:116500. [PMID: 38795416 DOI: 10.1016/j.ecoenv.2024.116500] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 05/16/2024] [Accepted: 05/22/2024] [Indexed: 05/28/2024]
Abstract
Hexavalent chromium [Cr(VI)] is one of the most common environmental contaminants due to its tremendous industrial applications, but its effects and mechanism remain to be investigated. Our previous studies showed that Cr(VI) exposure caused malignant transformation and tumorigenesis. This study showed that glycolytic proteins HK2 and LDHA levels were statistically significant changed in blood samples of Cr(VI)-exposed workers and in Cr-T cells compared to the control subjects and parental cells. HK2 and LDHA knockdown inhibited cell proliferation and angiogenesis, and higher HK2 and LDHA expression levels are associated with advanced stages and poor prognosis of lung cancer. We found that miR-218 levels were significantly decreased and miR-218 directly targeted HK2 and LDHA for inhibiting their expression. Overexpression of miR-218 inhibited glucose consumption and lactate production in Cr-T cells. Further study found that miR-218 inhibited tumor growth and angiogenesis by decreasing HK2 and LDHA expression in vivo. MiR-218 levels were negatively correlated with HK2 and LDHA expression levels and cancer development in human lung and other cancers. These results demonstrated that miR-218/HK2/LDHA pathway is vital for regulating Cr(VI)-induced carcinogenesis and human cancer development.
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Affiliation(s)
- Lin Wang
- Academy of Medical Science, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Rui-Ke Zhang
- Academy of Medical Science, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Peng Sang
- Academy of Medical Science, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Yun-Xia Xie
- Academy of Medical Science, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Ye Zhang
- The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Zhi-Hao Zhou
- Academy of Medical Science, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Kun-Kun Wang
- Academy of Medical Science, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Feng-Mei Zhou
- Academy of Medical Science, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Xiang-Bo Ji
- Academy of Medical Science, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China
| | - Wen-Jing Liu
- The Affiliated Cancer Hospital of Zhengzhou University, Zhengzhou 450000, China
| | - Jian-Ge Qiu
- Academy of Medical Science, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China.
| | - Bing-Hua Jiang
- Academy of Medical Science, Tianjian Laboratory of Advanced Biomedical Sciences, Zhengzhou University, Zhengzhou 450000, China.
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2
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Wise JTF, Kondo K. Increased Lipogenesis Is Important for Hexavalent Chromium-Transformed Lung Cells and Xenograft Tumor Growth. Int J Mol Sci 2023; 24:17060. [PMID: 38069382 PMCID: PMC10707372 DOI: 10.3390/ijms242317060] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2023] [Revised: 11/29/2023] [Accepted: 11/30/2023] [Indexed: 12/18/2023] Open
Abstract
Hexavalent chromium, Cr(VI), is a known carcinogen and environmental health concern. It has been established that reactive oxygen species, genomic instability, and DNA damage repair deficiency are important contributors to the Cr(VI)-induced carcinogenesis mechanism. However, some hallmarks of cancer remain under-researched regarding the mechanism behind Cr(VI)-induced carcinogenesis. Increased lipogenesis is important to carcinogenesis and tumorigenesis in multiple types of cancers, yet the role increased lipogenesis has in Cr(VI) carcinogenesis is unclear. We report here that Cr(VI)-induced transformation of three human lung cell lines (BEAS-2B, BEP2D, and WTHBF-6) resulted in increased lipogenesis (palmitic acid levels), and Cr(VI)-transformed cells had an increased expression of key lipogenesis proteins (ATP citrate lyase [ACLY], acetyl-CoA carboxylase [ACC1], and fatty acid synthase [FASN]). We also determined that the Cr(VI)-transformed cells did not exhibit an increase in fatty acid oxidation or lipid droplets compared to their passage-matched control cells. Additionally, we observed increases in ACLY, ACC1, and FASN in lung tumor tissue compared with normal-adjacent lung tissue (in chromate workers that died of chromate-induced tumors). Next, using a known FASN inhibitor (C75), we treated Cr(VI)-transformed BEAS-2B with this inhibitor and measured cell growth, FASN protein expression, and growth in soft agar. We observed that FASN inhibition results in a decreased protein expression, decreased cell growth, and the inhibition of colony growth in soft agar. Next, using shRNA to knock down the FASN protein in Cr(VI)-transformed BEAS-2B cells, we saw a decrease in FASN protein expression and a loss of the xenograft tumor development of Cr(VI)-transformed BEAS-2B cells. These results demonstrate that FASN is important for Cr(VI)-transformed cell growth and cancer properties. In conclusion, these data show that Cr(VI)-transformation in vitro caused an increase in lipogenesis, and that this increase is vital for Cr(VI)-transformed cells.
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Affiliation(s)
- James T. F. Wise
- Wise Laboratory of Nutritional Toxicology and Metabolism, School of Nutrition and Food Sciences, College of Agriculture, Louisiana State University, 269 Knapp Hall, Baton Rouge, LA 70803, USA
- School of Nutrition and Food Sciences, College of Agriculture, Louisiana State University, Baton Rouge, LA 70803, USA
- School of Nutrition and Food Sciences, Louisiana State University Agriculture Center, Baton Rouge, LA 70803, USA
- Division of Nutritional Sciences, Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Kazuya Kondo
- Department of Oncological Medical Services, Graduate School of Biomedical Sciences, Tokushima University Graduate School, Tokushima City 770-8509, Japan
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3
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Liapun V, Hanif MB, Sihor M, Vislocka X, Pandiaraj S, V K U, Thirunavukkarasu GK, Edelmannová MF, Reli M, Monfort O, Kočí K, Motola M. Versatile application of BiVO 4/TiO 2 S-scheme photocatalyst: Photocatalytic CO 2 and Cr(VI) reduction. CHEMOSPHERE 2023:139397. [PMID: 37406942 DOI: 10.1016/j.chemosphere.2023.139397] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2023] [Revised: 06/20/2023] [Accepted: 06/30/2023] [Indexed: 07/07/2023]
Abstract
Herein, the synthesis, characterization, and reduction properties of 2D TiO2 aerogel powder decorated with BiVO4 (TiO2/BiVO4) were investigated for versatile applications. First, 2D TiO2 was prepared via lyophilization and subsequently modified with BiVO4 using a wet impregnation method. The morphology, structure, composition, and optical properties were evaluated using transmission electron microscopy (TEM), X-ray diffractometry (XRD), laser-induced breakdown spectroscopy (LIBS), and diffuse reflectance spectroscopy (DRS), respectively. Significantly enhanced photocurrent densities (by 3-15 times) were obtained for TiO2/BiVO4 compared to those of pure TiO2 and BiVO4. The reduction of toxic Cr(VI) to Cr(III) was assessed, including the effect of pH on overall photocatalytic efficiency. Under acidic conditions (pH ∼ 2), Cr(VI) reduction efficiency reached 100% within 2 h. For photocatalytic CO2 reduction, the highest yields of CH4 and CO were obtained using TiO2/BiVO4. A higher efficiency for both applications was achieved because of the better separation of the electron-hole pairs in TiO2/BiVO4. The excellent stability of TiO2/BiVO4 over repeated runs highlights its potential for use in versatile environmental applications. The efficiency of TiO2/BiVO4 is due to the interplay of the structure, morphology, composition, and photoelectrochemical properties that favour the material for the presented herein photocatalytic applications.
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Affiliation(s)
- Viktoriia Liapun
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Ilkovicova 6, 842 15, Bratislava, Slovakia; Department of Environmental Ecology and Landscape Management, Faculty of Natural Sciences, Comenius University Bratislava, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Muhammad Bilal Hanif
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Marcel Sihor
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. Listopadu 15/2172, Ostrava, Poruba, Czech Republic
| | - Xenia Vislocka
- Institute of Inorganic Chemistry, Czech Academy of Sciences, Husinec-Rez 1001, Rez, 250 68, Czech Republic
| | - Saravanan Pandiaraj
- Department of Self-Development Skills, CFY Deanship, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Unnikrishnan V K
- Centre of Excellence for Biophotonics, Department of Atomic and Molecular Physics, Manipal Academy of Higher Education, Manipal, 576104, India
| | - Guru Karthikeyan Thirunavukkarasu
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Miroslava Filip Edelmannová
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. Listopadu 15/2172, Ostrava, Poruba, Czech Republic
| | - Martin Reli
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. Listopadu 15/2172, Ostrava, Poruba, Czech Republic
| | - Olivier Monfort
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Kamila Kočí
- Institute of Environmental Technology, CEET, VSB-Technical University of Ostrava, 17. Listopadu 15/2172, Ostrava, Poruba, Czech Republic.
| | - Martin Motola
- Department of Inorganic Chemistry, Faculty of Natural Sciences, Comenius University Bratislava, Ilkovicova 6, 842 15, Bratislava, Slovakia.
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4
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Adverse Human Health Effects of Chromium by Exposure Route: A Comprehensive Review Based on Toxicogenomic Approach. Int J Mol Sci 2023; 24:ijms24043410. [PMID: 36834821 PMCID: PMC9963995 DOI: 10.3390/ijms24043410] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2022] [Revised: 01/31/2023] [Accepted: 02/07/2023] [Indexed: 02/11/2023] Open
Abstract
Heavy metals are defined as metals with relatively high density and atomic weight, and their various applications have raised serious concerns about the environmental impacts and potential human health effects. Chromium is an important heavy metal that is involved in biological metabolism, but Cr exposure can induce a severe impact on occupational workers or public health. In this study, we explore the toxic effects of Cr exposure through three exposure routes: dermal contact, inhalation, and ingestion. We propose the underlying toxicity mechanisms of Cr exposure based on transcriptomic data and various bioinformatic tools. Our study provides a comprehensive understanding of the toxicity mechanisms of different Cr exposure routes by diverse bioinformatics analyses.
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5
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Kouokam JC, Meaza I, Wise JP. Inflammatory effects of hexavalent chromium in the lung: A comprehensive review. Toxicol Appl Pharmacol 2022; 455:116265. [PMID: 36208701 PMCID: PMC10024459 DOI: 10.1016/j.taap.2022.116265] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2022] [Revised: 09/23/2022] [Accepted: 09/30/2022] [Indexed: 11/23/2022]
Abstract
Besides smoking, lung cancer can be caused by other factors, including heavy metals such as cadmium, nickel, arsenic, beryllium and hexavalent chromium [Cr(VI)], which is used in multiple settings, resulting in widespread environmental and occupational exposures as well as heavy use. The mechanism by which Cr(VI) causes lung cancer is not completely understood. Currently, it is admitted chromosome instability is a key process in the mechanism of Cr(VI)-induced cancer, and previous studies have suggested Cr(VI) impacts the lung tissue in mice by triggering tissue damage and inflammation. However, the mechanism underlying Cr(VI)-induced inflammation and its exact role in lung cancer are unclear. Therefore, this review aimed to systematically examine previous studies assessing Cr(VI)-induced inflammation and to summarize the major inflammatory pathways involved in Cr(VI)-induced inflammation. In cell culture studies, COX2, VEGF, JAK-STAT, leukotriene B4 (LTB4), MAPK, NF-ҡB and Nrf2 signaling pathways were consistently upregulated by Cr(VI), clearly demonstrating that these pathways are involved in Cr(VI)-induced inflammation. In addition, Akt signaling was also shown to contribute to Cr(VI)-induced inflammation, although discrepant findings were reported. Few mechanistic studies were performed in animal models, in which Cr(VI) upregulated oxidative pathways, NF-kB signaling and the MAPK pathway in the lung tissue. Similar to cell culture studies, opposite effects of Cr(VI) on Akt signaling were reported. This work provides insights into the mechanisms by which Cr(VI) induces lung inflammation. However, discrepant findings and other major issues in study design, both in cell and animal models, suggest that further studies are required to unveil the mechanism of Cr(VI)-induced inflammation and its role in lung cancer.
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Affiliation(s)
- J Calvin Kouokam
- Wise Laboratory of Environmental and Genetic Toxicology, Department of Pharmacology and Toxicology, University of Louisville, 500 S Preston St, Rm 1422, Louisville, KY, USA.
| | - Idoia Meaza
- Wise Laboratory of Environmental and Genetic Toxicology, Department of Pharmacology and Toxicology, University of Louisville, 500 S Preston St, Rm 1422, Louisville, KY, USA
| | - John Pierce Wise
- Wise Laboratory of Environmental and Genetic Toxicology, Department of Pharmacology and Toxicology, University of Louisville, 500 S Preston St, Rm 1422, Louisville, KY, USA
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6
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Bellouard M, Gasser M, Lenglet S, Gilardi F, Bararpour N, Augsburger M, Thomas A, Alvarez JC. Toxicity and Metabolomic Impact of Cobalt, Chromium, and Nickel Exposure on HepaRG Hepatocytes. Chem Res Toxicol 2022; 35:807-816. [PMID: 35442019 DOI: 10.1021/acs.chemrestox.1c00429] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Cobalt, chromium, and nickel are used in orthopedic prostheses. They can be released, accumulate in many organs, and be toxic. The aim of this study is to evaluate the cytotoxicity of these metals on human hepatocytes and to improve our knowledge of their cellular toxicity mechanisms by metabolomic analysis. HepaRG cells were incubated for 48 h with increasing concentrations of metals to determine their IC50. Then, a nontargeted metabolomic study using liquid chromatography-high-resolution mass spectrometry (LC-HRMS) was done at IC50 and at a lower concentration (100 nM), near to those found in the blood and liver of patients with prostheses. IC50 were defined at 940, 2, and 1380 μM for Co, Cr, and Ni, respectively. In vitro, Cr appears to be much more toxic than Co and Ni. Metabolomic analysis revealed the disruption of metabolic pathways from the low concentration of 100 nM, in particular tryptophan metabolism and lipid metabolism illustrated by an increase in phenylacetylglycine, a marker of phospholipidosis, for all three metals. They also appear to be responsible for oxidative stress. Dysregulation of these pathways impacts hepatocyte metabolism and may result in hepatotoxicity. Further investigations on accessible biological matrices should be conducted to correlate our in vitro results with the clinical data of prostheses-bearing patients.
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Affiliation(s)
- Marie Bellouard
- Service de Pharmacologie-Toxicologie, Groupe Hospitalier Universitaire AP-HP, Paris-Saclay, Hôpital Raymond Poincaré, FHU Sepsis, 104 bvd R. Poincaré, 92380 Garches, France.,Plateforme MasSpecLab, UMR1173, Inserm, Université Paris Saclay (Versailles Saint Quentin-en-Yvelines), 2 Avenue de le Source de la Bièvre, 78180 Montigny-le-Bretonneux, France
| | - Marie Gasser
- Unit of Forensic Toxicology and Chemistry, CURML, Lausanne University Hospital, 1000 Lausanne 25, Switzerland.,Unit of Forensic Toxicology and Chemistry, CURML, Geneva University Hospitals, 1211 Geneva 4, Switzerland.,Faculty Unit of Toxicology, CURML, Faculty of Biology and Medicine, University of Lausanne, 1015 Lausanne, Switzerland
| | - Sébastien Lenglet
- Unit of Forensic Toxicology and Chemistry, CURML, Lausanne University Hospital, 1000 Lausanne 25, Switzerland.,Unit of Forensic Toxicology and Chemistry, CURML, Geneva University Hospitals, 1211 Geneva 4, Switzerland
| | - Federica Gilardi
- Unit of Forensic Toxicology and Chemistry, CURML, Lausanne University Hospital, 1000 Lausanne 25, Switzerland.,Unit of Forensic Toxicology and Chemistry, CURML, Geneva University Hospitals, 1211 Geneva 4, Switzerland.,Faculty Unit of Toxicology, CURML, Faculty of Biology and Medicine, University of Lausanne, 1015 Lausanne, Switzerland
| | - Nasim Bararpour
- Department of Genetics, Stanford School of Medicine, Stanford, California 94305, United States
| | - Marc Augsburger
- Unit of Forensic Toxicology and Chemistry, CURML, Lausanne University Hospital, 1000 Lausanne 25, Switzerland.,Unit of Forensic Toxicology and Chemistry, CURML, Geneva University Hospitals, 1211 Geneva 4, Switzerland
| | - Aurélien Thomas
- Unit of Forensic Toxicology and Chemistry, CURML, Lausanne University Hospital, 1000 Lausanne 25, Switzerland.,Unit of Forensic Toxicology and Chemistry, CURML, Geneva University Hospitals, 1211 Geneva 4, Switzerland.,Faculty Unit of Toxicology, CURML, Faculty of Biology and Medicine, University of Lausanne, 1015 Lausanne, Switzerland
| | - Jean-Claude Alvarez
- Service de Pharmacologie-Toxicologie, Groupe Hospitalier Universitaire AP-HP, Paris-Saclay, Hôpital Raymond Poincaré, FHU Sepsis, 104 bvd R. Poincaré, 92380 Garches, France.,Plateforme MasSpecLab, UMR1173, Inserm, Université Paris Saclay (Versailles Saint Quentin-en-Yvelines), 2 Avenue de le Source de la Bièvre, 78180 Montigny-le-Bretonneux, France
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7
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Liu M, Zhang S, Wang Y, Liu J, Hu W, Lu X. Hexavalent Chromium as a Smart Switch for Peroxidase-like Activity Regulation via the Surface Electronic Redistribution of Silver Nanoparticles Anchored on Carbon Spheres. Anal Chem 2022; 94:1669-1677. [PMID: 35020355 DOI: 10.1021/acs.analchem.1c04219] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Although some ions, due to their unique chemical properties, can regulate the enzyme-like activity of nanomaterials, it is still a huge challenge to explore the mechanism of regulation. Herein, we found that Cr6+ (CrO42-) as a smart switch can significantly increase the peroxidase-like (POD-like) activity of silver nanoparticles (Ag NPs), which were anchored efficiently on carbon spheres (Cal-CS/PEG/Ag) using amino-modified poly(ethylene glycol) (PEG) as a bridge. Density functional theory (DFT) calculations demonstrated that the addition of Cr6+ can not only adjust the surface electronic redistribution of Ag atoms but also improve the geometric structure of the adsorbed intermediate, which resulted in the optimization of free energy and change of bond lengths in the catalytic reaction process, increasing the POD-like activity of Cal-CS/PEG/Ag. Based on the Cr6+-increased POD-like activity of Cal-CS/PEG/Ag, we successfully constructed a visual sensor of Cr6+ along with quantitative analysis by the UV spectrum. The sensor has good selectivity for other 29 interfering ions and molecules with a detection limit of 79 nM. In this work, the detailed mechanism of the Cr6+-increased POD-like activity of Ag NPs was studied and a new possibility for the rational design of ion visual sensors using nanomaterials was proposed.
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Affiliation(s)
- Meili Liu
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Shouting Zhang
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Yingsha Wang
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Jia Liu
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Wenping Hu
- Tianjin Key Laboratory of Molecular Optoelectronic, Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, P. R. China
| | - Xiaoquan Lu
- Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China
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8
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Tran VV, Nu TTV, Jung HR, Chang M. Advanced Photocatalysts Based on Conducting Polymer/Metal Oxide Composites for Environmental Applications. Polymers (Basel) 2021; 13:3031. [PMID: 34577932 PMCID: PMC8470106 DOI: 10.3390/polym13183031] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Revised: 09/05/2021] [Accepted: 09/05/2021] [Indexed: 01/12/2023] Open
Abstract
Photocatalysts provide a sustainable method of treating organic pollutants in wastewater and converting greenhouse gases. Many studies have been published on this topic in recent years, which signifies the great interest and attention that this topic inspires in the community, as well as in scientists. Composite photocatalysts based on conducting polymers and metal oxides have emerged as novel and promising photoactive materials. It has been demonstrated that conducting polymers can substantially improve the photocatalytic efficiency of metal oxides owing to their superior photocatalytic activities, high conductivities, and unique electrochemical and optical properties. Consequently, conducting polymer/metal oxide composites exhibit a high photoresponse and possess a higher surface area allowing for visible light absorption, low recombination of charge carriers, and high photocatalytic performance. Herein, we provide an overview of recent advances in the development of conducting polymer/metal oxide composite photocatalysts for organic pollutant degradation and CO2 conversion through photocatalytic processes.
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Affiliation(s)
- Vinh Van Tran
- Alan G. MacDiarmid Energy Research Institute, Chonnam National University, Gwangju 61186, Korea;
| | - Truong Thi Vu Nu
- Advanced Institute of Science and Technology, University of Danang, Danang 50000, Vietnam;
| | - Hong-Ryun Jung
- Industry-University Cooperation Foundation, Chonnam National University, Gwangju 61186, Korea
| | - Mincheol Chang
- Alan G. MacDiarmid Energy Research Institute, Chonnam National University, Gwangju 61186, Korea;
- Department of Polymer Engineering, Graduate School, Chonnam National University, Gwangju 61186, Korea
- School of Polymer Science and Engineering, Chonnam National University, Gwangju 61186, Korea
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9
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Pavesi T, Moreira JC. Mechanisms and individuality in chromium toxicity in humans. J Appl Toxicol 2020; 40:1183-1197. [DOI: 10.1002/jat.3965] [Citation(s) in RCA: 73] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Revised: 02/10/2020] [Accepted: 02/23/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Thelma Pavesi
- Centro de Estudos da Saúde do Trabalhador e Ecologia HumanaEscola Nacional de Saúde Pública, Fundação Oswaldo Cruz Rio de Janeiro Brazil
| | - Josino Costa Moreira
- Centro de Estudos da Saúde do Trabalhador e Ecologia HumanaEscola Nacional de Saúde Pública, Fundação Oswaldo Cruz Rio de Janeiro Brazil
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10
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Deng X, Chen Y, Wen J, Xu Y, Zhu J, Bian Z. Polyaniline-TiO 2 composite photocatalysts for light-driven hexavalent chromium ions reduction. Sci Bull (Beijing) 2020; 65:105-112. [PMID: 36659073 DOI: 10.1016/j.scib.2019.10.020] [Citation(s) in RCA: 49] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Revised: 10/12/2019] [Accepted: 10/14/2019] [Indexed: 01/21/2023]
Abstract
In order to develop efficient photocatalysts, great efforts have been made to reduce hexavalent chromium to trivalent chromium. The photocatalytic efficiency of this reduction depends largely on the adsorption and diffusion of hexavalent chromium ions on the surface of the photocatalyst. In this paper, polyaniline-TiO2 composite can effectively improve the photocatalytic reduction performance and stability of hexavalent chromium ion. The effect of polyaniline (PANI) thickness on Cr(VI) activity and stability of photocatalytic reduction was studied by adjusting the content of PANI on Mesoporous TiO2 (MT) surface. Under the irradiation conditions, the reaction results showed that the reduction rate was 100%, and the maximum reaction rate reached 0.62 min-1 when the PANI modification was 3.0%. Moreover, the results showed that the reduction performance remained 100% after ten cycles. The main reason is that the PANI modified on the surface of TiO2 is rich in positively charged amino group, which can efficiently adsorb the reactant Cr(VI), and make the product Cr(III) leave the reaction interface quickly, thus ensuring the performance of photocatalyst.
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Affiliation(s)
- Xiaoming Deng
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Yao Chen
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Jieya Wen
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Yun Xu
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China
| | - Jian Zhu
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China.
| | - Zhenfeng Bian
- The Education Ministry Key Laboratory of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, China.
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11
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Chen B, Xiong J, Ding JH, Yuan BF, Feng YQ. Analysis of the Effects of Cr(VI) Exposure on mRNA Modifications. Chem Res Toxicol 2019; 32:2078-2085. [DOI: 10.1021/acs.chemrestox.9b00249] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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12
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Shil K, Pal S. Metabolic and morphological disorientations in the liver and skeletal muscle of mice exposed to hexavalent chromium. ACTA ACUST UNITED AC 2019. [DOI: 10.1007/s00580-019-03014-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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13
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Wise JTF, Wang L, Alstott MC, Ngalame NNO, Wang Y, Zhang Z, Shi X. Investigating the Role of Mitochondrial Respiratory Dysfunction during Hexavalent Chromium-Induced Lung Carcinogenesis. J Environ Pathol Toxicol Oncol 2019; 37:317-329. [PMID: 30806238 DOI: 10.1615/jenvironpatholtoxicoloncol.2018028689] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Hexavalent chromium [Cr(VI)] is a lung carcinogen and its complete mechanism of action remains to be investigated. Metabolic reprogramming of key energy metabolism pathways (e.g., increased anaerobic glycolysis in the presence of oxygen or "Warburg effect", dysregulated mitochondrial function, and lipogenesis) are important to cancer cell and tumor survival and growth. In our current understanding of Cr(VI)-induced carcinogenesis, the role for metabolic reprogramming remains unclear. In this study, we treated human lung epithelial cells (BEAS-2B) with Cr(VI) for 6 months and obtained malignantly transformed cells from an isolated colony grown in soft agar. We also used Cr(VI)-transformed cells from two other human lung cell lines (BEP2D and WTHBF-6 cells). Overall, we found that all the Cr(VI)-transformed cells had no changes in their mitochondrial respiratory functions (measured by the Seahorse Analyzer) compared with passaged-matched control cells. Using a xenograft tumor growth model, we generated tumors from these transformed cells in Nude mice. Using cells obtained from the xenograft tumor tissues, we observed that these cells had decreased maximal mitochondrial respiration, spare respiratory capacity, and coupling efficiency. These results provide evidence that, although mitochondrial dysfunction does not occur during Cr(VI)-induced transformation of lung cells, it does occur during tumor development.
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Affiliation(s)
- James T F Wise
- Division of Nutritional Sciences, Department of Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Lei Wang
- Center for Research on Environmental Disease, College of Medicine, University of Kentucky, Lexington, KY 40536, USA
| | - Michael C Alstott
- Markey Cancer Center, Redox Metabolism Shared Resource Facility, University of Kentucky, Lexington, KY
| | - Ntube N O Ngalame
- Center for Research on Environmental Disease, College of Medicine, University of Kentucky, Lexington, KY
| | - Yuting Wang
- Center for Research on Environmental Disease, College of Medicine, University of Kentucky, Lexington, KY
| | - Zhuo Zhang
- Toxicology and Cancer Biology, College of Medicine, University of Kentucky, Lexington, KY
| | - Xianglin Shi
- Division of Nutritional Sciences, Pharmacology and Nutritional Sciences, College of Medicine, University of Kentucky, Lexington, KY; Center for Research on Environmental Disease, College of Medicine, University of Kentucky, Lexington, KY; Toxicology and Cancer Biology, College of Medicine, University of Kentucky, Lexington, KY
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Hu G, Wang T, Liu J, Chen Z, Zhong L, Yu S, Zhao Z, Zhai M, Jia G. Serum protein expression profiling and bioinformatics analysis in workers occupationally exposed to chromium (VI). Toxicol Lett 2017; 277:76-83. [DOI: 10.1016/j.toxlet.2017.05.026] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2017] [Revised: 05/15/2017] [Accepted: 05/21/2017] [Indexed: 01/31/2023]
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15
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Boland MR, Tatonetti NP. Investigation of 7-dehydrocholesterol reductase pathway to elucidate off-target prenatal effects of pharmaceuticals: a systematic review. THE PHARMACOGENOMICS JOURNAL 2016; 16:411-29. [PMID: 27401223 PMCID: PMC5028238 DOI: 10.1038/tpj.2016.48] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 04/15/2016] [Accepted: 05/02/2016] [Indexed: 12/18/2022]
Abstract
Mendelian diseases contain important biological information regarding developmental effects of gene mutations that can guide drug discovery and toxicity efforts. In this review, we focus on Smith–Lemli–Opitz syndrome (SLOS), a rare Mendelian disease characterized by compound heterozygous mutations in 7-dehydrocholesterol reductase (DHCR7) resulting in severe fetal deformities. We present a compilation of SLOS-inducing DHCR7 mutations and the geographic distribution of those mutations in healthy and diseased populations. We observed that several mutations thought to be disease causing occur in healthy populations, indicating an incomplete understanding of the condition and highlighting new research opportunities. We describe the functional environment around DHCR7, including pharmacological DHCR7 inhibitors and cholesterol and vitamin D synthesis. Using PubMed, we investigated the fetal outcomes following prenatal exposure to DHCR7 modulators. First-trimester exposure to DHCR7 inhibitors resulted in outcomes similar to those of known teratogens (50 vs 48% born-healthy). DHCR7 activity should be considered during drug development and prenatal toxicity assessment.
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Affiliation(s)
- M R Boland
- Department of Biomedical Informatics, Columbia University, New York, NY, USA.,Observational Health Data Sciences and Informatics, Columbia University, New York, NY, USA
| | - N P Tatonetti
- Department of Biomedical Informatics, Columbia University, New York, NY, USA.,Observational Health Data Sciences and Informatics, Columbia University, New York, NY, USA.,Department of Systems Biology, Columbia University, New York, NY, USA.,Department of Medicine, Columbia University, New York, NY, USA
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16
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Guo L, Xiao Y, Wang Y. Application of adenosine triphosphate affinity probe and scheduled multiple-reaction monitoring analysis for profiling global kinome in human cells in response to arsenite treatment. Anal Chem 2014; 86:10700-7. [PMID: 25301106 PMCID: PMC4222629 DOI: 10.1021/ac502592d] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
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Phosphorylation of cellular components
catalyzed by kinases plays
important roles in cell signaling and proliferation. Quantitative
assessment of perturbation in global kinome may provide crucial knowledge
for elucidating the mechanisms underlying the cytotoxic effects of
environmental toxicants. Here, we utilized an adenosine triphosphate
(ATP) affinity probe coupled with stable isotope labeling by amino
acids in cell culture (SILAC) to assess quantitatively the arsenite-induced
alteration of global kinome in human cells. We constructed a SILAC-compatible
kinome library for scheduled multiple-reaction monitoring (MRM) analysis
and adopted on-the-fly recalibration of retention time shift, which
provided better throughput of the analytical method and enabled the
simultaneous quantification of the expression of ∼300 kinases
in two LC-MRM runs. With this improved analytical method, we conducted
an in-depth quantitative analysis of the perturbation of kinome of
GM00637 human skin fibroblast cells induced by arsenite exposure.
Several kinases involved in cell cycle progression, including cyclin-dependent
kinases (CDK1 and CDK4) and Aurora kinases A, B, and C, were found
to be hyperactivated, and the altered expression of CDK1 was further
validated by Western analysis. In addition, treatment with a CDK inhibitor,
flavopiridol, partially restored the arsenite-induced growth inhibition
of human skin fibroblast cells. Thus, sodium arsenite may confer its
cytotoxic effect partly through the aberrant activation of CDKs and
the resultant perturbation of cell cycle progression. Together, we
developed a high-throughput, SILAC-compatible, and MRM-based kinome
profiling method and demonstrated that the method is powerful in deciphering
the molecular modes of action of a widespread environmental toxicant.
The method should be generally applicable for uncovering the cellular
pathways triggered by other extracellular stimuli.
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Affiliation(s)
- Lei Guo
- Environmental Toxicology Graduate Program and ‡Department of Chemistry, University of California , Riverside, California 92521-0403, United States
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17
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Hu M, Liu Y, Yu K, Liu X. Decreasing the amount of trypsin in in-gel digestion leads to diminished chemical noise and improved protein identifications. J Proteomics 2014; 109:16-25. [DOI: 10.1016/j.jprot.2014.06.017] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2014] [Revised: 06/13/2014] [Accepted: 06/20/2014] [Indexed: 11/26/2022]
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18
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Guo L, Xiao Y, Wang Y. Monomethylarsonous acid inhibited endogenous cholesterol biosynthesis in human skin fibroblasts. Toxicol Appl Pharmacol 2014; 277:21-9. [PMID: 24625837 DOI: 10.1016/j.taap.2014.02.020] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2013] [Revised: 02/23/2014] [Accepted: 02/28/2014] [Indexed: 12/18/2022]
Abstract
Human exposure to arsenic in drinking water is a widespread public health concern, and such exposure is known to be associated with many human diseases. The detailed molecular mechanisms about how arsenic species contribute to the adverse human health effects, however, remain incompletely understood. Monomethylarsonous acid [MMA(III)] is a highly toxic and stable metabolite of inorganic arsenic. To exploit the mechanisms through which MMA(III) exerts its cytotoxic effect, we adopted a quantitative proteomic approach, by coupling stable isotope labeling by amino acids in cell culture (SILAC) with LC-MS/MS analysis, to examine the variation in the entire proteome of GM00637 human skin fibroblasts following acute MMA(III) exposure. Among the ~6500 unique proteins quantified, ~300 displayed significant changes in expression after exposure with 2 μM MMA(III) for 24 h. Subsequent analysis revealed the perturbation of de novo cholesterol biosynthesis, selenoprotein synthesis and Nrf2 pathways evoked by MMA(III) exposure. Particularly, MMA(III) treatment resulted in considerable down-regulation of several enzymes involved in cholesterol biosynthesis. In addition, real-time PCR analysis showed reduced mRNA levels of select genes in this pathway. Furthermore, MMA(III) exposure contributed to a distinct decline in cellular cholesterol content and significant growth inhibition of multiple cell lines, both of which could be restored by supplementation of cholesterol to the culture media. Collectively, the present study demonstrated that the cytotoxicity of MMA(III) may arise, at least in part, from the down-regulation of cholesterol biosynthesis enzymes and the resultant decrease of cellular cholesterol content.
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Affiliation(s)
- Lei Guo
- Environmental Toxicology Graduate Program, University of California, Riverside, CA 92521-0403, United States
| | - Yongsheng Xiao
- Department of Chemistry, University of California, Riverside, CA 92521-0403, United States
| | - Yinsheng Wang
- Environmental Toxicology Graduate Program, University of California, Riverside, CA 92521-0403, United States; Department of Chemistry, University of California, Riverside, CA 92521-0403, United States.
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