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Dallinger R. Metals and metallothionein evolution in snails: a contribution to the concept of metal-specific functionality from an animal model group. Biometals 2024; 37:671-696. [PMID: 38416244 PMCID: PMC11101346 DOI: 10.1007/s10534-024-00584-3] [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: 09/26/2023] [Accepted: 01/10/2024] [Indexed: 02/29/2024]
Abstract
This is a critical review of what we know so far about the evolution of metallothioneins (MTs) in Gastropoda (snails, whelks, limpets and slugs), an important class of molluscs with over 90,000 known species. Particular attention will be paid to the evolution of snail MTs in relation to the role of some metallic trace elements (cadmium, zinc and copper) and their interaction with MTs, also compared to MTs from other animal phyla. The article also highlights the important distinction, yet close relationship, between the structural and metal-selective binding properties of gastropod MTs and their physiological functionality in the living organism. It appears that in the course of the evolution of Gastropoda, the trace metal cadmium (Cd) must have played an essential role in the development of Cd-selective MT variants. It is shown how the structures and Cd-selective binding properties in the basal gastropod clades have evolved by testing and optimizing different combinations of ancestral and novel MT domains, and how some of these domains have become established in modern and recent gastropod clades. In this context, the question of how adaptation to new habitats and lifestyles has affected the original MT traits in different gastropod lineages will also be addressed. The 3D structures and their metal binding preferences will be highlighted exemplarily in MTs of modern littorinid and helicid snails. Finally, the importance of the different metal requirements and pathways in snail tissues and cells for the shaping and functionality of the respective MT isoforms will be shown.
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2
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Abstract
Heavy metals are harmful environmental pollutants that have attracted widespread attention due to their health hazards to human cardiovascular disease. Heavy metals, including lead, cadmium, mercury, arsenic, and chromium, are found in various sources such as air, water, soil, food, and industrial products. Recent research strongly suggests a connection between cardiovascular disease and exposure to toxic heavy metals. Epidemiological, basic, and clinical studies have revealed that heavy metals can promote the production of reactive oxygen species, which can then exacerbate reactive oxygen species generation and induce inflammation, resulting in endothelial dysfunction, lipid metabolism distribution, disruption of ion homeostasis, and epigenetic changes. Over time, heavy metal exposure eventually results in an increased risk of hypertension, arrhythmia, and atherosclerosis. Strengthening public health prevention and the application of chelation or antioxidants, such as vitamins and beta-carotene, along with minerals, such as selenium and zinc, can diminish the burden of cardiovascular disease attributable to metal exposure.
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Affiliation(s)
- Ziwei Pan
- Key Laboratory of Combined Multi Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China (Z.P., P.L.)
- Institute of Translational Medicine, Zhejiang University, Hangzhou, China (Z.P., P.L.)
| | - Tingyu Gong
- Shulan International Medical College, Zhejiang Shuren University, Hangzhou, China (T.G.)
| | - Ping Liang
- Key Laboratory of Combined Multi Organ Transplantation, Ministry of Public Health, The First Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, China (Z.P., P.L.)
- Institute of Translational Medicine, Zhejiang University, Hangzhou, China (Z.P., P.L.)
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3
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Korkola NC, Stillman MJ. Structural motifs in the early metallation steps of Zn(II) and Cd(II) binding to apo-metallothionein 1a. J Inorg Biochem 2024; 251:112429. [PMID: 38000179 DOI: 10.1016/j.jinorgbio.2023.112429] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 10/26/2023] [Accepted: 11/12/2023] [Indexed: 11/26/2023]
Abstract
Many proteins require a metal cofactor to function and these metals are often involved in the protein folding process. The protein metallothionein (MT) has a dynamic structure capable of binding to a variety of metals with different stoichiometries. The most well-understood structure is the seven-metal, two domain structure formed upon metallation using Zn(II) or Cd(II). However, the partially metallated states and the pathways to form these clusters are less well-understood, although it is known that the pathways are pH dependent. Using stopped flow methods, it is shown that the metallation rates of the less cooperative Zn(II) binding pathway is much more impacted by low pH conditions that that of the more cooperative Cd(II) binding pathway. Electrospray ionization mass spectrometry (ESI-MS) methods reveal specific mixtures of bridging and terminally bound MxSy structures form in the first few metallation steps. Using a combination of methods, the data show that the result of unfolding this intrinsically disordered apo-MT structure using guanidinium chloride is that the formation of preliminary bridging structures that form in the first few metallation steps is impeded. The data show that more terminally bound structures form. Our conclusion is that the compact conformation of the native apo-MT at physiological pH allows for rapid formation of complex metal-thiolate structures with high affinity that provides protection from oxidation, a function that is suppressed upon unfolding. Overall, these results highlight both the importance of the apo-MT structure in the metallation pathway, but also the differences in Zn(II) and Cd(II) binding under different conditions.
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Affiliation(s)
- Natalie C Korkola
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, ON N6A5B7, Canada
| | - Martin J Stillman
- Department of Chemistry, The University of Western Ontario, 1151 Richmond St., London, ON N6A5B7, Canada.
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Lehel J, Grúz A, Bartha A, Menyhárt L, Szabó R, Tibor K, Budai P. Potentially toxic elements in different tissues of great cormorant (Phalacrocorax carbo) at a wetland area. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2023; 30:120540-120551. [PMID: 37943439 DOI: 10.1007/s11356-023-30791-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2023] [Accepted: 10/27/2023] [Indexed: 11/10/2023]
Abstract
Concentrations of 4 potentially toxic elements (As, Cd, Hg, Pb) were investigated in the feather, liver, kidney, and bone of great cormorants (Phalacrocorax carbo). The tissue samples were taken at the Central Tisza - Jászság Nature Conservation Area in Hungary. They were analysed by inductively coupled plasma optical emission spectroscopy (ICP-OES). The goal of the investigation was to analyse the metal burden of the above-mentioned elements in the various tissues of these wild birds and to provide important information for monitoring the environmental pollution.Amongst the examined potentially toxic elements no statistical gender difference was observed, so the data were not separated based on them during the statistical analysis. The concentration of mercury was the highest in the feather, followed by the liver, kidney, and bone. The lead was detected in the feather with the highest level followed by the kidney, liver, and bone. The cadmium was determined in all investigated tissues with the next descending order: kidney > bone > liver > feather. Highest arsenic concentration was measured in the feather, followed by liver, kidney, and bone with the same concentration.The detected concentrations of the investigated potentially toxic elements in different tissues of great cormorants (feathers, liver, kidney, bone) means that the living area of this birds is not highly contaminated to induce health problems or toxic signs, or even other undesirable effect in the animals.
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Affiliation(s)
- József Lehel
- Department of Food Hygiene, University of Veterinary Medicine Budapest, István u. 2, Budapest, H-1400, Hungary
- National Laboratory for Infectious Animal Diseases, Antimicrobial Resistance, Veterinary Public Health and Food Chain Safety, University of Veterinary Medicine Budapest, István u. 2, Budapest, H-1400, Hungary
| | - Adrienn Grúz
- Medpace Hungary Kft., Csörsz u. 49-51, Budapest, H-1124, Hungary
| | - András Bartha
- Department of Animal Hygiene, Herd Health and Mobile Clinic, University of Veterinary Medicine Budapest, István u. 2, Budapest, H-1400, Hungary
| | - László Menyhárt
- Institute of Mathematics and Basic Science, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, Deák F. u. 16, Keszthely, H-8360, Hungary
| | - Rita Szabó
- Department of Plant Protection, Institute of Plant Protection, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, Deák F. u. 16, Keszthely, H-8360, Hungary
| | - Kocsner Tibor
- Digital Food Chain Education, Research, Development and Innovation Institute, University of Veterinary Medicine Budapest, István u. 2, Budapest, H-1400, Hungary
| | - Péter Budai
- Department of Plant Protection, Institute of Plant Protection, Georgikon Campus, Hungarian University of Agriculture and Life Sciences, Deák F. u. 16, Keszthely, H-8360, Hungary.
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Jevremović A, Savić M, Janošević Ležaić A, Krstić J, Gavrilov N, Bajuk-Bogdanović D, Milojević-Rakić M, Ćirić-Marjanović G. Environmental Potential of Carbonized MOF-5/PANI Composites for Pesticide, Dye, and Metal Cations-Can They Actually Retain Them All? Polymers (Basel) 2023; 15:4349. [PMID: 38006074 PMCID: PMC10675784 DOI: 10.3390/polym15224349] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2023] [Revised: 10/31/2023] [Accepted: 11/01/2023] [Indexed: 11/26/2023] Open
Abstract
The environmental application of the carbonized composites of the Zn-containing metal-organic framework MOF-5 and polyaniline (PANI) in its emeraldine salt and base forms (C-(MOF-5/PANI)) was investigated for the first time. Textural properties and particle size distributions revealed that composites are dominantly mesoporous and nanoscale in nature, while Raman spectroscopy revealed the ZnO phase beneath the carbon matrix. Adsorption of pesticide, dye, and metal cation on C-(MOF-5/PANI) composites in aqueous solutions was evaluated and compared with the behavior of the precursor components, carbonized MOF-5 (cMOF), and carbonized PANIs. A lower MOF-5 content in the precursor, a higher specific surface area, and the pore volume of the composites led to improved adsorption performance for acetamiprid (124 mg/g) and Methylene Blue (135 mg/g). The presence of O/N functional groups in composites is essential for the adsorption of nitrogen-rich pollutants through hydrogen bonding with an estimated monolayer capacity twice as high as that of cMOF. The proton exchange accompanying Cd2+ retention was associated with the Zn/Cd ion exchange, and the highest capacity (9.8 mg/g) was observed for the composite synthesized from the precursor with a high MOF-5 content. The multifunctionality of composites was evidenced in mixtures of pollutants where noticeably better performance for Cd2+ removal was found for the composite compared to cMOF. Competitive binding between three pollutants favored the adsorption of pesticide and dye, thereby hindering to some extent the ion exchange necessary for the removal of metal cations. The results emphasize the importance of the PANI form and MOF-5/PANI weight ratio in precursors for the development of surface, porosity, and active sites in C-(MOF-5/PANI) composites, thus guiding their environmental efficiency. The study also demonstrated that C-(MOF-5/PANI) composites retained studied pollutants much better than carbonized precursor PANIs and showed comparable or better adsorption ability than cMOF.
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Affiliation(s)
- Anka Jevremović
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Marjetka Savić
- Vinča Institute of Nuclear Science, National Institute of the Republic of Serbia, University of Belgrade, P.O. Box 522, 11001 Belgrade, Serbia
| | | | - Jugoslav Krstić
- Department of Catalysis and Chemical Engineering, Institute of Chemistry, Technology and Metallurgy, University of Belgrade, Njegoševa 12, 11000 Belgrade, Serbia
| | - Nemanja Gavrilov
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Danica Bajuk-Bogdanović
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Maja Milojević-Rakić
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
| | - Gordana Ćirić-Marjanović
- Faculty of Physical Chemistry, University of Belgrade, Studentski trg 12-16, 11158 Belgrade, Serbia
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Zhang Y, Liang R, Chen Y, Wang Y, Li X, Wang S, Jin H, Liu L, Tang Z. HSF1 protects cells from cadmium toxicity by governing proteome integrity. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 266:115571. [PMID: 37837696 DOI: 10.1016/j.ecoenv.2023.115571] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/11/2023] [Revised: 09/30/2023] [Accepted: 10/09/2023] [Indexed: 10/16/2023]
Abstract
BACKGROUND Cadmium toxicity has been associated with disruption of protein homeostasis by interfering with protein folding processes. Heat shock factor 1 (HSF1) coordinates the rapid and extensive cellular response to maintain proteomic balance facing the challenges from many environmental stressors. Thus, we suspect that HSF1 may shield cells from cadmium toxicity by conserving proteome integrity. RESULTS Here, we demonstrate that cadmium, a highly poisonous metal, induces aggregation of cytosolic proteins in human cells, which disrupts protein homeostasis and activates HSF1. Cadmium exposure increases HSF1's phosphorylation, nuclear translocation and DNA bindings. Aside from this, HSF1 goes through liquid-liquid phase separation to form small nuclear condensates upon cadmium exposure. A specific regulatory domain of HSF1 is critical for HSF1's phase separation capability. Most importantly, human cells with impaired HSF1 are sensitized to cadmium, however, cells with overexpressed HSF1 are protected from cadmium toxicity. Overexpression of HSF1 in human cells reduces protein aggregates, amyloid fibrils and DNA damages to antagonize cadmium toxicity. CONCLUSIONS HSF1 protects cells from cadmium toxicity by governing the integrity of both proteome and genome. Similar mechanisms may enable HSF1 to alleviate cellular toxicity caused by other heavy metals. HSF1's role in cadmium exposure may provide important insights into the toxic effects of heavy metals on human cells and body organs, allowing us to better manage heavy metal poisoning.
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Affiliation(s)
- Yuchun Zhang
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Rong Liang
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yingxiao Chen
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Yaling Wang
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Xue Li
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Shang Wang
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Honglin Jin
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, Hubei, 430070, China
| | - Lusha Liu
- College of Fisheries, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
| | - Zijian Tang
- College of Biomedicine and Health, Huazhong Agricultural University, Wuhan, Hubei, 430070, China.
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7
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Carrillo K, Martínez M, Ramírez L, Argüello D, Chavez E. Cadmium (Cd) distribution and soil-plant relationship in cacao farms in Costa Rica. ENVIRONMENTAL MONITORING AND ASSESSMENT 2023; 195:1209. [PMID: 37707612 DOI: 10.1007/s10661-023-11817-2] [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: 06/16/2023] [Accepted: 09/01/2023] [Indexed: 09/15/2023]
Abstract
The current cadmium (Cd) regulations in chocolate threaten the cacao supply chain in several Latin American countries. The factors contributing to Cd accumulation in cacao beans have been poorly studied in Central America. The objective of this research was to identify the location of Cd hotspots as well as soil properties and management practices influencing the Cd concentration in cacao beans. A survey was carried out and soil, leaf, and beans were sampled from 150 farms in the three principal cacao-producing regions in Costa Rica. Total soil Cd concentration ranged from <0.1 to 1.05 (average 0.22 mg kg-1) which is typical of uncontaminated soils. Bean Cd concentration ranged from 0.12 to 3.23 (average 0.56 mg kg-1) and 22% of the samples exceeded the selected threshold of 0.80 mg kg-1, located mostly in the Huetar Caribe and Huetar Norte regions. Variability in bean Cd concentration was better explained by total soil Cd and soil organic carbon (SOC) (R2 = 0.62, p < 0.05). In addition, bean Cd concentration was affected by leaf nutrient content and management practices. Leaf Zn and P were positively correlated with bean Cd while K and Mn were negatively correlated (p < 0.05). Farm altitude and orchard age were also negatively correlated with bean Cd. Overall, this study shows that bean Cd contamination does not reach the extent observed in other Latin American countries such as Ecuador, Colombia, or Honduras. Nevertheless, research is needed in hotspot areas to assess the feasibility of potential mitigation strategies, particularly the use of mineral or organic soil amendments, which may allow better for planning in existing plantations or the expansion into new cacao-growing areas in the country.
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Affiliation(s)
- Kevin Carrillo
- Instituto Nacional de Innovación y Transferencia en Tecnología Agropecuaria, INTA, P.O Box 382-1007, San José, Costa Rica.
| | - Mariela Martínez
- Instituto Nacional de Innovación y Transferencia en Tecnología Agropecuaria, INTA, P.O Box 382-1007, San José, Costa Rica
| | - Laura Ramírez
- Instituto Nacional de Innovación y Transferencia en Tecnología Agropecuaria, INTA, P.O Box 382-1007, San José, Costa Rica
| | - David Argüello
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ciencias de la Vida, Campus Gustavo Galindo, P.O. Box 09-01-5863, Km 30.5 Vía Perimetral, Guayaquil, Ecuador
| | - Eduardo Chavez
- Escuela Superior Politécnica del Litoral, ESPOL, Facultad de Ciencias de la Vida, Campus Gustavo Galindo, P.O. Box 09-01-5863, Km 30.5 Vía Perimetral, Guayaquil, Ecuador
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8
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Liu H, Tian X, Jiang L, Han D, Hu S, Cui Y, Jiang F, Liu Y, Xu Y, Li H. Sources, bioaccumulation, and toxicity mechanisms of cadmium in Chlamys farreri. JOURNAL OF HAZARDOUS MATERIALS 2023; 453:131395. [PMID: 37058935 DOI: 10.1016/j.jhazmat.2023.131395] [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: 03/06/2023] [Revised: 04/05/2023] [Accepted: 04/08/2023] [Indexed: 05/03/2023]
Abstract
The Potentially toxic elements (PTEs) cadmium (Cd) is one of the most serious stressors polluting the marine environment. Marine bivalves have specific high enrichment capacity for Cd. Previous studies have investigated the tissue distribution changes and toxic effects of Cd in bivalves, but the sources of Cd enrichment, migration regulation during growth, and toxicity mechanisms in bivalves have not been fully explained. Here, we used stable-isotope labeling to investigate the contributions of Cd from different sources to scallop tissues. We sampled the entire growth cycle of Chlamys farreri, which is widely cultured in northern China, from juveniles to adult scallops. We found tissue variability in the bioconcentration-metabolism pattern of Cd in different bound states, with Cd in the aqueous accounting for a significant contribution. The accumulation pattern of Cd in all tissues during growth was more significant in the viscera and gills. Additionally, we combined a multi-omics approach to reveal a network of oxidative stress-induced toxicity mechanisms of Cd in scallops, identifying differentially expressed genes and proteins involved in metal ion binding, oxidative stress, energy metabolism, and apoptosis. Our findings have important implications for both ecotoxicology and aquaculture. They also provide new insights into marine environmental assessment and mariculture development.
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Affiliation(s)
- Huan Liu
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource & Environment Research Institute, Yantai, China; School of Bioengineering, Dalian University of Technology, Dalian, China
| | - Xiuhui Tian
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource & Environment Research Institute, Yantai, China
| | - Lisheng Jiang
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource & Environment Research Institute, Yantai, China
| | - Dianfeng Han
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource & Environment Research Institute, Yantai, China
| | - Shunxin Hu
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource & Environment Research Institute, Yantai, China
| | - Yanmei Cui
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource & Environment Research Institute, Yantai, China
| | - Fang Jiang
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource & Environment Research Institute, Yantai, China
| | - Yongchun Liu
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource & Environment Research Institute, Yantai, China
| | - Yingjiang Xu
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource & Environment Research Institute, Yantai, China.
| | - Huanjun Li
- Yantai Key Laboratory of Quality and Safety Control and Deep Processing of Marine Food, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Key Laboratory of Marine Ecological Restoration, Shandong Marine Resource & Environment Research Institute, Yantai, China.
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Zhang X, Li F, Ji C, Wu H. Toxicological mechanism of cadmium in the clam Ruditapes philippinarum using combined ionomic, metabolomic and transcriptomic analyses. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 323:121286. [PMID: 36791949 DOI: 10.1016/j.envpol.2023.121286] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/01/2022] [Revised: 02/08/2023] [Accepted: 02/12/2023] [Indexed: 06/18/2023]
Abstract
Cadmium (Cd) contamination in marine environment poses great risks to the organisms due to its potential adverse effects. In the present study, the toxicological effects and mechanisms of Cd at environmentally relevant concentrations (5 and 50 μg/L) on clam Ruditapes philippinarum after 21 days were investigated by combined ionomic, metabolomic, and transcriptomic analyses. Results showed that the uptake of Cd significantly decreased the concentrations of Cu, Zn, Sr, Se, and Mo in the whole soft tissue from 50 μg/L Cd-treated clams. Significantly negative correlations were observed between Cd and essential elements (Zn, Sr, Se, and Mo). Altered essential elements homeostasis was associated with the gene regulation of transport and detoxification, including ATP-binding cassette protein subfamily B member 1 (ABCB1) and metallothioneins (MT). The crucial contribution of Se to Cd detoxification was also found in clams. Additionally, gene set enrichment analysis showed that Cd could interfere with proteolysis by peptidases and decrease the translation efficiency at 50 μg/L. Cd inhibited lipid metabolism in clams and increased energy demand by up-regulating glycolysis and TCA cycle. Osmotic pressure was regulated by free amino acids, including alanine, glutamate, taurine, and homarine. Meanwhile, significant alterations of some differentially expressed genes, such as dopamine-β-hydroxylase (DBH), neuroligin (NLGN), NOTCH 1, and chondroitin sulfate proteoglycan 1 (CSPG1) were observed in clams, which implied potential interference with synaptic transmission. Overall, through integrating multiple omics, this study provided new insights into the toxicological mechanisms of Cd, particularly in those mediated by dysregulation of essential element homeostasis.
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Affiliation(s)
- Xiaoyu Zhang
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Fei Li
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China; University of Chinese Academy of Sciences, Beijing, 100049, PR China
| | - Chenglong Ji
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences (CAS), Qingdao, 266071, PR China
| | - Huifeng Wu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai, 264003, PR China; Laboratory for Marine Fisheries Science and Food Production Processes, Qingdao National Laboratory for Marine Science and Technology, Qingdao, 266237, PR China; Center for Ocean Mega-Science, Chinese Academy of Sciences (CAS), Qingdao, 266071, PR China.
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10
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Zhan J, Sun T, Wang X, Wu H, Yu J. Meta-analysis reveals the species-, dose- and duration-dependent effects of cadmium toxicities in marine bivalves. THE SCIENCE OF THE TOTAL ENVIRONMENT 2023; 859:160164. [PMID: 36395852 DOI: 10.1016/j.scitotenv.2022.160164] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 11/03/2022] [Accepted: 11/09/2022] [Indexed: 06/16/2023]
Abstract
Cadmium (Cd) is a typical pollutant in marine environment. Increasing studies have focused on the toxicological effects of Cd in marine bivalves. However, there were many conflicting findings of toxicological effects of Cd in marine bivalves. An integrated analysis performed on the published data of Cd toxicity in marine bivalves is still absent. In this study, a meta-analysis was performed on the toxic endpoints in bivalves exposed to aqueous-phase Cd from 87 studies screened from 1519 papers. Subgroup analyses were conducted according to the categories of species, tissue, exposure dose and duration. The results showed significant species-, duration- and dose-dependent responses in bivalves to aqueous-phase Cd exposure. In details, clams were more sensitive to Cd than oysters, mussels and scallops, indicated by the largest effect size in clams. Gill, hepatopancreas and hemolymph were top three tissues used to indicate Cd-induced toxicity and did not present a significant tissue-specific manner among them. With regard to toxicological effect subgroups, oxidative stress and detoxification were top two subgroups indicating Cd toxicities. Detoxification and genotoxicity subgroups presented higher response magnitudes. What is more, toxicological effect subgroups presented multiple dose- and duration-dependent curves. Oxidative stress and genotoxicity related endpoints presented significant increase trends with Cd exposure dose and were preferable biomarkers to marine Cd pollution. Detoxification and energy metabolism related endpoints showed inverted U-shaped and U-shaped dose-response curves, both of which could be explained by hormesis. The linear decrease in oxidative stress and energy metabolism related endpoints over time suggested their involvement into the adaptive mechanism in bivalves. Overall, this study provided not only a better understanding the responsive mechanisms of marine bivalves to Cd stress, but also a selection reference for biomarkers to aqueous-phase Cd pollution in marine environment.
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Affiliation(s)
- Junfei Zhan
- Key Laboratory of Ecological Restoration and Conservation of Coastal Wetlands in Universities of Shandong, The Institute for Advanced Study of Coastal Ecology, Ludong University, Yantai 264025, PR China
| | - Tao Sun
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China
| | - Xuehong Wang
- Key Laboratory of Ecological Restoration and Conservation of Coastal Wetlands in Universities of Shandong, The Institute for Advanced Study of Coastal Ecology, Ludong University, Yantai 264025, PR China
| | - Huifeng Wu
- CAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research (YIC), Chinese Academy of Sciences (CAS), Shandong Key Laboratory of Coastal Environmental Processes, YICCAS, Yantai 264003, PR China.
| | - Junbao Yu
- Key Laboratory of Ecological Restoration and Conservation of Coastal Wetlands in Universities of Shandong, The Institute for Advanced Study of Coastal Ecology, Ludong University, Yantai 264025, PR China.
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11
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Yang X, Xi L, Guo Z, Liu L, Ping Z. The relationship between cadmium and cognition in the elderly: a systematic review. Ann Hum Biol 2023; 50:15-25. [PMID: 36645404 DOI: 10.1080/03014460.2023.2168755] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Context: The relationship between cadmium (Cd) and the cognition of the elderly is indistinct.Objective: To summarise the studies on the relationship between the cognition of the elderly and Cd.Methods: Literatures were searched in PubMed, Web of Science, China National Knowledge Infrastructure (CNKI), and Wan fang database on April 25, 2022. The entries in the STROBE statement were used to evaluate the literature quality; all the quantitative studies that met the requirements were systematically summarised.Results: Blood Cd was negatively correlated with the cognitive ability of the elderly, corresponding to different cognitive ability assessment methods, the regression coefficients were: -0.11 (-0.20, -0.03), -0.46 (-0.71, -0.21), -0.54 (-0.90, -0.17), -0.19 (-0.37, -0.01), and -2.29 (-3.41, -1.16). The regression coefficients between urinary Cd level and cognition score were -1.42 (-2.38, -0.46), and 0.76 (-1.28, -0.23). When dietary Cd increased by 1 μg/kg, the composite z-score decreased by 3.64 (p = 0.001). There was no significant correlation between drinking water Cd, fingernail Cd and cognition (p > 0.05).Conclusion: We concluded that blood Cd (including whole blood and plasma), urine Cd and dietary Cd were negatively correlated with the cognition of the elderly, but the relationship between Cd in drinking water and fingernails and cognition was not statistically significant.
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Affiliation(s)
- Xueke Yang
- College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Lijing Xi
- College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Zhaoyan Guo
- College of Public Health, Zhengzhou University, Zhengzhou, China
| | - Li Liu
- School of Basic Medical Sciences, Zhengzhou University, Zhengzhou, China
| | - Zhiguang Ping
- College of Public Health, Zhengzhou University, Zhengzhou, China
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12
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Abstract
Living systems are built from a small subset of the atomic elements, including the bulk macronutrients (C,H,N,O,P,S) and ions (Mg,K,Na,Ca) together with a small but variable set of trace elements (micronutrients). Here, we provide a global survey of how chemical elements contribute to life. We define five classes of elements: those that are (i) essential for all life, (ii) essential for many organisms in all three domains of life, (iii) essential or beneficial for many organisms in at least one domain, (iv) beneficial to at least some species, and (v) of no known beneficial use. The ability of cells to sustain life when individual elements are absent or limiting relies on complex physiological and evolutionary mechanisms (elemental economy). This survey of elemental use across the tree of life is encapsulated in a web-based, interactive periodic table that summarizes the roles chemical elements in biology and highlights corresponding mechanisms of elemental economy.
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Affiliation(s)
- Kaleigh A Remick
- Department of Microbiology, Cornell University, New York, NY, United States
| | - John D Helmann
- Department of Microbiology, Cornell University, New York, NY, United States.
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13
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Concentrations of Transition Metal Ions in Rat Lungs after Tobacco Smoke Exposure and Treatment with His-Leu Dipeptide. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28020628. [PMID: 36677686 PMCID: PMC9862342 DOI: 10.3390/molecules28020628] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/07/2022] [Revised: 12/31/2022] [Accepted: 01/04/2023] [Indexed: 01/11/2023]
Abstract
Tobacco smoking is deleterious to the lungs because it exposes them to many toxic substances. These include transition metal ions, such as cadmium. However, there is a lack of information about the influence of endogenous metal-binding peptides, such as His-Leu (HL), on the lung distribution of transition metals in smokers. To address this, we administered HL subcutaneously to rats exposed to tobacco smoke for six weeks, then we measured the concentrations of transition metal ions in the lungs. We found that exposure to tobacco smoke elevates the concentrations of Cd(II) and Cu(II). Administration of the HL peptide, whose elevation is a consequence of angiotensin receptor blocker anti-hypertension therapy, increases the concentration of Fe in the lungs of rats exposed to smoke. These findings suggest that smoking is a risk factor for patients receiving angiotensin receptor blockers to treat hypertension.
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14
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Ares Á, Sakai S, Sasaki T, Shimamura S, Mitarai S, Nunoura T. Sequestration and efflux largely account for cadmium and copper resistance in the deep-sea Nitratiruptor sp. SB155-2 (phylum Campylobacterota). Environ Microbiol 2022; 24:6144-6163. [PMID: 36284406 PMCID: PMC10092412 DOI: 10.1111/1462-2920.16255] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Accepted: 10/20/2022] [Indexed: 01/12/2023]
Abstract
In deep-sea hydrothermal vent environments, metal-enriched fluids and sediments abound, making these habitats ideal to study metal resistance in prokaryotes. In this investigation, we employed transcriptomics and shotgun proteomics with scanning transmission electron microscopy and energy-dispersive x-ray spectroscopy (STEM-EDX) to better understand mechanisms of tolerance for cadmium (Cd) and copper (Cu) at stress-inducing concentrations in Nitratiruptor sp. SB155-2 (phylum Campylobacterota). Transcriptomic profiles were remarkably different in the presence of these two metals, displaying 385 (19%) and 629 (31%) differentially transcribed genes (DTG) in the presence of Cd(II) and Cu(II), respectively, while only 7% of differentially transcribed (DT) genes were shared, with genes for non-specific metal transporters and genes involved in oxidative stress-response predominating. Transcriptomic and proteomic analyses confirmed that metal-specific DT pathways under Cu(II) stress, including those involving sulfur, cysteine, and methionine, are likely required for high-affinity efflux systems, while flagella formation and chemotaxis were over-represented under Cd(II) stress. Consistent with these differences, STEM-EDX analysis revealed that polyphosphate-like granules (pPLG), the formation of CdS particles, and the periplasmic space are crucial for Cd(II) sequestration. Overall, this study provides new insights regarding metal-specific adaptations of Campylobacterota to deep-sea hydrothermal vent environments.
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Affiliation(s)
- Ángela Ares
- Marine Biophysics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan
| | - Sanae Sakai
- Super-Cutting-Edge Grand and Advanced Research (SUGAR) Program, Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-STAR), Japan Agency for Marine-Earth Science & Technology (JAMSTEC), Yokosuka, Japan
| | - Toshio Sasaki
- Imaging section, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan
| | - Shigeru Shimamura
- Super-Cutting-Edge Grand and Advanced Research (SUGAR) Program, Institute for Extra-cutting-edge Science and Technology Avant-garde Research (X-STAR), Japan Agency for Marine-Earth Science & Technology (JAMSTEC), Yokosuka, Japan
| | - Satoshi Mitarai
- Marine Biophysics Unit, Okinawa Institute of Science and Technology Graduate University, Onna, Okinawa, Japan
| | - Takuro Nunoura
- Research and Development Center for Marine Biosciences, Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Yokosuka, Japan
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15
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Stelmashook EV, Alexandrova OP, Genrikhs EE, Novikova SV, Salmina AB, Isaev NK. Effect of zinc and copper ions on cadmium-induced toxicity in rat cultured cortical neurons. J Trace Elem Med Biol 2022; 73:127012. [PMID: 35679765 DOI: 10.1016/j.jtemb.2022.127012] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2022] [Revised: 05/18/2022] [Accepted: 05/27/2022] [Indexed: 11/23/2022]
Abstract
BACKGROUND Cadmium is a highly toxic heavy metal that is capable of accumulating in the body and causing neurodegeneration. However, the effect of other trace elements on Cd2+ toxicity is currently poorly understood. The aim of this work was to study the effect of Zn2+ and Cu2+ ions on cadmium-induced death of neurons in the cerebral cortex. METHODS The work was performed on rat cortical primary cultures. The MTT test was used to determine the cytotoxicity effects. Analysis of intracellular Ca2+ concentration was assessed by the Fluo-4 AM calcium indicator that exhibit an increase in fluorescence upon binding Ca2+. MitoSOX Red (mitochondrial superoxide indicator) was used to measuring mitochondrial ROS content in live cells. RESULTS In this article, we show that the administration of CdCl2 (0.005-0.02 mM) for 48 h induced an increase in dose-dependent death rate of cultured cortical neurons. Mature neurons were more sensitive to the damaging effects of Cd2+ than immature ones. ZnCl2 (0.01-0.03 mM) significantly protected neurons from this toxic effect. In contrast to ZnCl2, CuCl2 (0.01 mM) increased cadmium neurotoxicity. Using Fluo-4 AM, measurements of intracellular calcium ions demonstrated that 24 h-exposure to Cd2+ induced intensive increase in Fluo-4 fluorescence in neurons, which was significantly reduced by zinc ions. CuCl2 increased the cadmium-induced Fluo-4 and MitoSOX Red fluorescence in neurons. The chelator of intracellular Ca2+ BAPTA significantly decreased Cd2+-induced intensive increase in Fluo-4 fluorescence in cells. CONCLUSION The data obtained by us indicate that Zn2+ and Cu2+ can affect the neurotoxicity of cadmium in different directions: Zn2+ weaken the violation of intracellular calcium homeostasis caused by cadmium, preventing cell death, while Cu2+ potentiate the increase in the level of free intracellular calcium induced by cadmium and the development of mitochondrial dysfunction with an increase in the production of free radicals in differentiated cultured neurons of the cerebral cortex, which ultimately stimulates cytotoxicity.
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Affiliation(s)
| | | | | | | | | | - Nickolay K Isaev
- Research Center of Neurology, Moscow, Russia; M.V. Lomonosov Moscow State University, Moscow, Russia.
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16
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Xia L, Zhang W, Che J, Chen J, Wen P, Ma B, Wang C. Insights into the effect of cations on cathodic behavior and microstructure in cadmium electrochemical recovery process. CHEMOSPHERE 2022; 292:133423. [PMID: 34958790 DOI: 10.1016/j.chemosphere.2021.133423] [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: 11/09/2021] [Revised: 12/22/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
Secondary resources provide an essential source for cadmium recovery, but also bring severe environmental problems. Due to the short process and high product purity, electrodeposition is suitable for realizing the reduction, reuse, and recycling of cadmium, while the complex composition of the resources contributes to a complicated electrochemical system. In this work, the effect of common cations (Cu2+, Ni2+, Fe2+, and Zn2+) on cadmium electrochemical recovery was investigated from the perspective of electrochemical behavior and microstructure. The results indicated that Cu affected the electrochemical process most prominently, which was deposited on the cathode and formed microcell with Cd, not only impeding the recovery of Cd, but also influencing the purity severely. Comparatively, Ni showed a relatively minor effect, which made the formal potential more negative and alleviated cathodic polarization to some degree. Besides, Fe2+ was oxidized by the oxygen released from the anode, and followed by the reaction with Cd, resulting in the redissolution of Cd. With respect to Zn, a low concentration of Zn (≤1 g L-1) had little influence on electrochemical behavior of Cd, while it was deposited simultaneously with Cd on the cathode at a high concentration (5 g L-1). Based on the microstructural characterization, the lithops-like cathode cadmium grew up in the presence of Cu, while dendritic Cd was formed affected by Zn, Fe2+, and Ni, especially Fe2+.
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Affiliation(s)
- Liu Xia
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Wenjuan Zhang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China; Department of Materials Engineering, University of British Columbia, Vancouver, BC, V6T 1Z4, Canada.
| | - Jianyong Che
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Jun Chen
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Peicheng Wen
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Baozhong Ma
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China
| | - Chengyan Wang
- State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, China; School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
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17
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Aigner GP, Pittl V, Fiechtner B, Egger B, Šrut M, Höckner M. Common mechanisms cannot explain time- and dose-dependent DNA methylation changes in earthworms exposed to cadmium. THE SCIENCE OF THE TOTAL ENVIRONMENT 2022; 812:151468. [PMID: 34742794 DOI: 10.1016/j.scitotenv.2021.151468] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Revised: 09/28/2021] [Accepted: 11/02/2021] [Indexed: 06/13/2023]
Abstract
DNA hypermethylation caused by environmental pollutants like cadmium (Cd) has already been demonstrated in many invertebrates, including earthworms. However, the exact epigenetic mechanisms that drive this hypermethylation are largely unknown and even basic DNA methylation and demethylation processes are hardly characterized. Therefore, we used an important bioindicator, the earthworm Lumbricus terrestris, as a model organism to determine time- and dose-dependent effects of Cd on global and gene-specific DNA methylation and its underlying mechanisms. We revealed Cd-induced adenine and cytosine hypermethylation using specific antibodies in dot blots and found that the methylation level of adenine compared to cytosine changed even to a bigger extent. However, the levels of hydroxymethylated cytosine did not differ between treatment groups. General methylation and demethylation components like methyltransferases (DNMT1 and 3), and ten-eleven translocation (TET) genes were confirmed in L. terrestris by quantitative RealTime PCR. However, neither gene expression, nor DNMT and TET enzyme activity showed significant differences in the Cd exposure groups. Using bisulfite conversion and sequencing, gene body methylation (gbm) of metallothionein 2 (MT2), one of the most important detoxification proteins, was characterized. Cd-dependent changes in MT2 gbm could, however, not be correlated to MT2 gene activity evaluated by quantitative RealTime PCR. Future directions as well as missing links are discussed in the present study hinting towards the importance of studying epigenetic marks and mechanistic insights in a broad variety of species to deepen our knowledge on the effects of changing environmental conditions.
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Affiliation(s)
- Gerhard P Aigner
- University of Innsbruck, Institute of Zoology, Center for Molecular Biosciences Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Verena Pittl
- University of Innsbruck, Institute of Zoology, Center for Molecular Biosciences Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Birgit Fiechtner
- University of Innsbruck, Institute of Zoology, Center for Molecular Biosciences Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Bernhard Egger
- University of Innsbruck, Institute of Zoology, Center for Molecular Biosciences Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Maja Šrut
- University of Innsbruck, Institute of Zoology, Center for Molecular Biosciences Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria
| | - Martina Höckner
- University of Innsbruck, Institute of Zoology, Center for Molecular Biosciences Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria.
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18
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Aigner GP, Nenning P, Fiechtner B, Šrut M, Höckner M. DNA Methylation and Detoxification in the Earthworm Lumbricus terrestris Exposed to Cadmium and the DNA Demethylation Agent 5-aza-2'-deoxycytidine. TOXICS 2022; 10:100. [PMID: 35202286 PMCID: PMC8879108 DOI: 10.3390/toxics10020100] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Revised: 02/14/2022] [Accepted: 02/18/2022] [Indexed: 01/27/2023]
Abstract
Earthworms are well-established model organisms for testing the effects of heavy metal pollution. How DNA methylation affects cadmium (Cd) detoxification processes such as the expression of metallothionein 2 (MT2), however, is largely unknown. We therefore exposed Lumbricus terrestris to 200 mg concentrations of Cd and 5-aza-2'-deoxycytidine (Aza), a demethylating agent, and sampled tissue and coelomocytes, cells of the innate immune system, for 48 h. MT2 transcription significantly increased in the Cd- and Cd-Aza-treated groups. In tissue samples, a significant decrease in MT2 in the Aza-treated group was detected, showing that Aza treatment inhibits basal MT2 gene activity but has no effect on Cd-induced MT2 levels. Although Cd repressed the gene expression of DNA-(cytosine-5)-methyltransferase-1 (DNMT1), which is responsible for maintaining DNA methylation, DNMT activity was unchanged, meaning that methylation maintenance was not affected in coelomocytes. The treatment did not influence DNMT3, which mediates de novo methylation, TET gene expression, which orchestrates demethylation, and global levels of hydroxymethylcytosine (5hmC), a product of the demethylation process. Taken together, this study indicates that Aza inhibits basal gene activity, in contrast to Cd-induced MT2 gene expression, but does not affect global DNA methylation. We therefore conclude that Cd detoxification based on the induction of MT2 does not relate to DNA methylation changes.
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Affiliation(s)
| | | | | | | | - Martina Höckner
- Department of Zoology, Center for Molecular Biosciences Innsbruck, University of Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria; (G.P.A.); (P.N.); (B.F.); (M.Š.)
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19
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Is Cadmium Toxicity Tissue-Specific? Toxicogenomics Studies Reveal Common and Specific Pathways in Pulmonary, Hepatic, and Neuronal Cell Models. Int J Mol Sci 2022; 23:ijms23031768. [PMID: 35163690 PMCID: PMC8836438 DOI: 10.3390/ijms23031768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Revised: 01/25/2022] [Accepted: 02/01/2022] [Indexed: 11/24/2022] Open
Abstract
Several harmful modifications in different tissues-organs, leading to relevant diseases (e.g., liver and lung diseases, neurodegeneration) are reported after exposure to cadmium (Cd), a wide environmental contaminant. This arises the question whether any common molecular signatures and/or Cd-induced modifications might represent the building block in initiating or contributing to address the cells towards different pathological conditions. To unravel possible mechanisms of Cd tissue-specificity, we have analyzed transcriptomics data from cell models representative of three major Cd targets: pulmonary (A549), hepatic (HepG2), and neuronal (SH-SY-5Y) cells. Further, we compared common features to identify any non-specific molecular signatures. The functional analysis of dysregulated genes (gene ontology and KEGG) shows GO terms related to metabolic processes significantly enriched only in HepG2 cells. GO terms in common in the three cell models are related to metal ions stress response and detoxification processes. Results from KEGG analysis show that only one specific pathway is dysregulated in a significant way in all cell models: the mineral absorption pathway. Our data clearly indicate how the molecular mimicry of Cd and its ability to cause a general metal ions dyshomeostasis represent the initial common feature leading to different molecular signatures and alterations, possibly responsible for different pathological conditions.
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20
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Matić D, Vlahović M, Ilijin L, Grčić A, Filipović A, Todorović D, Perić-Mataruga V. Implications of long-term exposure of a Lymantria dispar L. population to pollution for the response of larval midgut proteases and acid phosphatases to chronic cadmium treatment. Comp Biochem Physiol C Toxicol Pharmacol 2021; 250:109172. [PMID: 34461292 DOI: 10.1016/j.cbpc.2021.109172] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Revised: 08/04/2021] [Accepted: 08/22/2021] [Indexed: 11/18/2022]
Abstract
Cadmium (Cd) presence in terrestrial ecosystems is a serious threat that requires continuous development of biomonitoring tools. Ideally, a suitable biomarker of exposure should respond to the toxicant consistently in different populations regardless of previous exposure to pollution. Here we considered the activities and isoform patterns of certain proteases and acid phosphatases (ACP) in the midgut of Lymantria dispar larvae as well as the integrated biomarker response (IBR) for application in Cd biomonitoring. We compared the responses of caterpillars originating from unpolluted and polluted localities after they had been chronically subjected to dietary Cd (50 and 100 μg Cd/g dry food). The population inhabiting the unpolluted forest was far more sensitive to Cd exposure as the activities of total proteases, trypsin (TRY) and leucine aminopeptidase (LAP) were mostly reduced while the activities of total and non-lysosomal ACP were increased. Non-lysosomal ACP activity was elevated in larvae from the contaminated site in response to the higher Cd concentration. Exposure to the metal resulted in numerous alterations in the pattern of enzyme isoforms, but the responses of the two populations were similar except that larvae from the polluted locality were more tolerant to the lower Cd concentration. Non-lysosomal ACP activity and the appearance of ACP isoforms 4 and 5 together with the IBR index are the most promising indicators of Cd presence, potentially applicable even in populations with a history of exposure to pollution. TRY and total ACP activities could be used to monitor populations at uncontaminated localities.
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Affiliation(s)
- Dragana Matić
- Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Despot Stefan Blvd. 142, 11060 Belgrade, Serbia.
| | - Milena Vlahović
- Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
| | - Larisa Ilijin
- Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
| | - Anja Grčić
- Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
| | - Aleksandra Filipović
- Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
| | - Dajana Todorović
- Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
| | - Vesna Perić-Mataruga
- Department of Insect Physiology and Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Despot Stefan Blvd. 142, 11060 Belgrade, Serbia
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21
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Singh P, Chandrasekaran V, Hardy B, Wilmes A, Jennings P, Exner TE. Temporal transcriptomic alterations of cadmium exposed human iPSC-derived renal proximal tubule-like cells. Toxicol In Vitro 2021; 76:105229. [PMID: 34352368 DOI: 10.1016/j.tiv.2021.105229] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Revised: 06/25/2021] [Accepted: 07/26/2021] [Indexed: 12/12/2022]
Abstract
Cadmium is a well-studied environmental pollutant where the kidney and particularly the proximal tubule cells are especially sensitive as they are exposed to higher concentrations of cadmium than other tissues. Here we investigated the temporal transcriptomic alterations (TempO-Seq) of human induced pluripotent stem cell (iPSC)-derived renal proximal tubule-like (PTL) cells exposed to 5 μM cadmium chloride for 1, 2, 4, 8, 12, 16, 20, 24, 72 and 168 h. There was an early activation (within 4 h) of the metal and oxidative stress responses (metal-responsive transcription factor-1 (MTF1) and nuclear factor erythroid-2-related factor 2 (Nrf2) genes). The Nrf2 response returned to baseline within 24 h. The Activator Protein 1 (AP-1) regulated genes HSPA6 and FOSL-1 followed the Nrf2 time course. While the MTF1 genes also spiked at 4 h, they remained strongly elevated over the entire exposure period. The data and cell culture model utilised will be useful in further research aimed at the refinement of safe human exposure limits for cadmium, other metals and their mixtures.
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Affiliation(s)
- Pranika Singh
- Edelweiss Connect GmbH, Technology Park Basel, Hochbergerstrasse 60C, 4057 Basel, Switzerland; Division of Molecular and Systems Toxicology, Department of Pharmaceutical Sciences, University of Basel, Klingelbergstrasse 50, 4056 Basel, Switzerland
| | - Vidya Chandrasekaran
- Division of Molecular and Computational Toxicology, Chemistry and Pharmaceutical Sciences, AIMMS, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Barry Hardy
- Edelweiss Connect GmbH, Technology Park Basel, Hochbergerstrasse 60C, 4057 Basel, Switzerland
| | - Anja Wilmes
- Division of Molecular and Computational Toxicology, Chemistry and Pharmaceutical Sciences, AIMMS, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands
| | - Paul Jennings
- Division of Molecular and Computational Toxicology, Chemistry and Pharmaceutical Sciences, AIMMS, Vrije Universiteit Amsterdam, Amsterdam, the Netherlands.
| | - Thomas E Exner
- Seven Past Nine d.o.o., Hribljane 10, 1380 Cerknica, Slovenia.
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22
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Wiggenhauser M, Aucour AM, Telouk P, Blommaert H, Sarret G. Changes of Cadmium Storage Forms and Isotope Ratios in Rice During Grain Filling. FRONTIERS IN PLANT SCIENCE 2021; 12:645150. [PMID: 33995443 PMCID: PMC8116553 DOI: 10.3389/fpls.2021.645150] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 03/08/2021] [Indexed: 05/10/2023]
Abstract
Rice poses a major source of the toxic contaminant cadmium (Cd) for humans. Here, we elucidated the role of Cd storage forms (i.e., the chemical Cd speciation) on the dynamics of Cd within rice. In a pot trial, we grew rice on a Cd-contaminated soil in upland conditions and sampled roots and shoots parts at flowering and maturity. Cd concentrations, isotope ratios, Cd speciation (X-ray absorption spectroscopy), and micronutrient concentrations were analyzed. During grain filling, Cd and preferentially light Cd isotopes were strongly retained in roots where the Cd storage form did not change (Cd bound to thiols, Cd-S = 100%). In the same period, no net change of Cd mass occurred in roots and shoots, and the shoots became enriched in heavy isotopes (Δ114/110Cd maturity-flowering = 0.14 ± 0.04‰). These results are consistent with a sequestration of Cd in root vacuoles that includes strong binding of Cd to thiol containing ligands that favor light isotopes, with a small fraction of Cd strongly enriched in heavy isotopes being transferred to shoots during grain filling. The Cd speciation in the shoots changed from predominantly Cd-S (72%) to Cd bound to O ligands (Cd-O, 80%) during grain filling. Cd-O may represent Cd binding to organic acids in vacuoles and/or binding to cell walls in the apoplast. Despite this change of ligands, which was attributed to plant senescence, Cd was largely immobile in the shoots since only 0.77% of Cd in the shoots were transferred into the grains. Thus, both storage forms (Cd-S and Cd-O) contributed to the retention of Cd in the straw. Cd was mainly bound to S in nodes I and grains (Cd-S > 84%), and these organs were strongly enriched in heavy isotopes compared to straw (Δ114/110Cd grains/nodes- straw = 0.66-0.72‰) and flag leaves (Δ114/110Cd grains/nodes-flag leaves = 0.49-0.52‰). Hence, xylem to phloem transfer in the node favors heavy isotopes, and the Cd-S form may persist during the transfer of Cd from node to grain. This study highlights the importance of Cd storage forms during its journey to grain and potentially into the food chain.
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Affiliation(s)
- Matthias Wiggenhauser
- Institute of Agricultural Sciences, Department of Environmental Systems Science, Eidgenössische Technische Hochschule Zürich, Zurich, Switzerland
- ISTerre, Université Grenoble Alpes, Université Savoie Mont Blanc, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Institut Français des Sciences et Technologies des Transports, de l’Aménagement et des Réseaux, Grenoble, France
| | - Anne-Marie Aucour
- Laboratoire de Geologie de Lyon, Ecole Normale Supérieure de Lyon, Université Lyon 1, Université de Lyon, Centre National de la Recherche Scientifique, Lyon, France
| | - Philippe Telouk
- Laboratoire de Geologie de Lyon, Ecole Normale Supérieure de Lyon, Université Lyon 1, Université de Lyon, Centre National de la Recherche Scientifique, Lyon, France
| | - Hester Blommaert
- ISTerre, Université Grenoble Alpes, Université Savoie Mont Blanc, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Institut Français des Sciences et Technologies des Transports, de l’Aménagement et des Réseaux, Grenoble, France
| | - Géraldine Sarret
- ISTerre, Université Grenoble Alpes, Université Savoie Mont Blanc, Centre National de la Recherche Scientifique, Institut de Recherche pour le Développement, Institut Français des Sciences et Technologies des Transports, de l’Aménagement et des Réseaux, Grenoble, France
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Panda S, Nanda A, Nasker SS, Sen D, Mehra A, Nayak S. Metal effect on intein splicing: A review. Biochimie 2021; 185:53-67. [PMID: 33727137 DOI: 10.1016/j.biochi.2021.03.006] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 03/04/2021] [Accepted: 03/06/2021] [Indexed: 02/08/2023]
Abstract
Inteins are intervening polypeptides that interrupt the functional domains of several important proteins across the three domains of life. Inteins excise themselves from the precursor protein, ligating concomitant extein residues in a process called protein splicing. Post-translational auto-removal of inteins remain critical for the generation of active proteins. The perspective of inteins in science is a robust field of research, however fundamental studies centralized upon splicing regulatory mechanism are imperative for addressing more intricate issues. Controlled engineering of intein splicing has many applications; intein inhibition can facilitate novel drug design, while activation of intein splicing is exploited in protein purification. This paper provides a comprehensive review of the past and recent advances in the splicing regulation via metal-intein interaction. We compare the behavior of different metal ions on diverse intein systems. Though metals such as Zn, Cu, Pt, Cd, Co, Ni exhibit intein inhibitory effect heterogeneously on different inteins, divalent metal ions such as Ca and Mg fail to do so. The observed diversity in the metal-intein interaction arises mostly due to intein polymorphism and variations in atomic structure of metals. A mechanistic understanding of intein regulation by metals in native as well as synthetically engineered intein systems may yield potent intein inhibitors via direct or indirect approach.
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Affiliation(s)
- Sunita Panda
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, Odisha, 751024, India
| | - Ananya Nanda
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, Odisha, 751024, India
| | - Sourya Subhra Nasker
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, Odisha, 751024, India
| | - Debjani Sen
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, Odisha, 751024, India
| | - Ashwaria Mehra
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, Odisha, 751024, India
| | - Sasmita Nayak
- School of Biotechnology, Kalinga Institute of Industrial Technology, Bhubaneswar, Odisha, 751024, India.
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Bird Feces as Indicators of Metal Pollution: Pitfalls and Solutions. TOXICS 2020; 8:toxics8040124. [PMID: 33353152 PMCID: PMC7767019 DOI: 10.3390/toxics8040124] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 12/14/2020] [Accepted: 12/16/2020] [Indexed: 02/06/2023]
Abstract
Bird feces are commonly used as a proxy for measuring dietary metal exposure levels in wild populations. Our study aims to improve the reliability and repeatability of fecal metal measurements and gives some recommendations for sampling. First, we studied levels of variation in metallic element (arsenic, calcium, cadmium, cobalt, copper, nickel, lead) concentrations: temporal variation within an individual, among siblings in a brood and among-brood/spatial variation. Second, we explored the variation caused by dual composition (urate vs. feces) of bird droppings. Two sets of fresh fecal samples were collected from pied flycatcher (Ficedula hypoleuca) nestlings living in a metal polluted area in summers 2017 (dataset 1) and 2018 (dataset 2). We found a great deal of temporal intra-individual variation in metal levels, suggesting that dietary exposure varied markedly in a short time scale (within a day). A sample from only one nestling per brood did not well describe the brood mean value, and we recommend that at least four siblings should be sampled. Brood level samples give relatively good temporal repeatability for most metals. For all the metals, the levels in the fecal portion were more than double to those in the urate portion. Since the mass proportion of urate in the bird droppings varied a great deal among samples, standardizing sampling, e.g., by collecting only the fecal part, would markedly reduce the variation due to composition. Alternatively, urate portion could be used for biomonitoring of internally circulated bioavailable metal.
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Linking molecular targets of Cd in the bloodstream to organ-based adverse health effects. J Inorg Biochem 2020; 216:111279. [PMID: 33413916 DOI: 10.1016/j.jinorgbio.2020.111279] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2020] [Revised: 10/05/2020] [Accepted: 10/05/2020] [Indexed: 12/25/2022]
Abstract
The chronic exposure of human populations to toxic metals remains a global public health concern. Although chronic Cd exposure is linked to kidney damage, osteoporosis and cancer, the underlying biomolecular mechanisms remain incompletely understood. Since other diseases could also be causally linked to chronic Cd exposure, a systems toxicology-based approach is needed to gain new insight into the underlying exposure-disease relationship. This approach requires one to integrate the cascade of dynamic bioinorganic chemistry events that unfold in the bloodstream after Cd enters with toxicological events that unfold in target organs over time. To this end, we have conducted a systematic literature search to identify all molecular targets of Cd in plasma and in red blood cells (RBCs). Based on this information it is impossible to describe the metabolism of Cd and the toxicological relevance of it binding to molecular targets in/on RBCs is elusive. Perhaps most importantly, the role that peptides, amino acids and inorganic ions, including HCO3-, Cl- and HSeO3- play in terms of mediating the translocation of Cd to target organs and its detoxification is poorly understood. Causally linking human exposure to this metal with diseases requires a much better integration of the bioinorganic chemistry of Cd that unfolds in the bloodstream with target organs. This from a public health point of view important goal will require collaborations between scientists from different disciplines to untangle the complex mechanisms which causally link Cd exposure to disease.
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Đukić-Ćosić D, Baralić K, Javorac D, Djordjevic AB, Bulat Z. An overview of molecular mechanisms in cadmium toxicity. CURRENT OPINION IN TOXICOLOGY 2020. [DOI: 10.1016/j.cotox.2019.12.002] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Oldani M, Fabbri M, Melchioretto P, Callegaro G, Fusi P, Gribaldo L, Forcella M, Urani C. In vitro and bioinformatics mechanistic-based approach for cadmium carcinogenicity understanding. Toxicol In Vitro 2020; 65:104757. [PMID: 31904401 PMCID: PMC7166080 DOI: 10.1016/j.tiv.2020.104757] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2019] [Revised: 11/28/2019] [Accepted: 01/01/2020] [Indexed: 02/07/2023]
Abstract
Cadmium is a toxic metal able to enter the cells through channels and transport pathways dedicated to essential ions, leading, among others, to the dysregulation of divalent ions homeostasis. Despite its recognized human carcinogenicity, the mechanisms are still under investigation. A powerful tool for mechanistic studies of carcinogenesis is the Cell Transformation Assay (CTA). We have isolated and characterized by whole genome microarray and bioinformatics analysis of differentially expressed genes (DEGs) cadmium-transformed cells from different foci (F1, F2, and F3) at the end of CTA (6 weeks). The systematic analysis of up- and down-regulated transcripts and the comparison of DEGs in transformed cells evidence different functional targets and the complex picture of cadmium-induced transformation. Only 34 in common DEGs are found in cells from all foci, and among these, only 4 genes are jointly up-regulated (Ccl2, Ccl5, IL6 and Spp1), all responsible for cytokines/chemokines coding. Most in common DEGs are down-regulated, suggesting that the switching-off of specific functions plays a major role in this process. In addition, the comparison of dysregulated pathways immediately after cadmium treatment with those in transformed cells provides a valuable means to the comprehension of the overall process. Cell transformation Assay and toxicogenomics are integrated to study cadmium carcinogenesis mechanisms Inflammatory response is the only common feature in Cd-transformed cells from all different foci Switching-off of specific functions plays a major role in Cd-induced carcinogenesis Comparison of triggering signals and deregulated pathways in transformed cells provides hints on cadmium mechanisms
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Affiliation(s)
- Monica Oldani
- Department of Biotechnology and Biosciences, University of Milan - Bicocca, Piazza della Scienza 3, 20126 Milan, Italy
| | - Marco Fabbri
- Dana-Farber Cancer Institute, 450 Brookline Ave, Boston, MA 02215, USA
| | - Pasquale Melchioretto
- Department of Earth and Environmental Sciences, University of Milan - Bicocca, Piazza della Scienza 1, 20126 Milan, Italy
| | - Giulia Callegaro
- Department of Earth and Environmental Sciences, University of Milan - Bicocca, Piazza della Scienza 1, 20126 Milan, Italy; Division of Drug Discovery and Safety, Leiden Academic Centre for Drug Research (LACDR), Leiden University, The Netherlands
| | - Paola Fusi
- Department of Biotechnology and Biosciences, University of Milan - Bicocca, Piazza della Scienza 3, 20126 Milan, Italy; Integrated Models for Prevention and Protection in Environmental and Occupational Health, (MISTRAL) Interuniversity Research Center, Italy
| | - Laura Gribaldo
- European Commission, DG Joint Research Centre, Via Fermi 2749, 21027 Ispra, VA, Italy.
| | - Matilde Forcella
- Department of Biotechnology and Biosciences, University of Milan - Bicocca, Piazza della Scienza 3, 20126 Milan, Italy
| | - Chiara Urani
- Department of Earth and Environmental Sciences, University of Milan - Bicocca, Piazza della Scienza 1, 20126 Milan, Italy; Integrated Models for Prevention and Protection in Environmental and Occupational Health, (MISTRAL) Interuniversity Research Center, Italy
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Boncompain G, Herit F, Tessier S, Lescure A, Del Nery E, Gestraud P, Staropoli I, Fukata Y, Fukata M, Brelot A, Niedergang F, Perez F. Targeting CCR5 trafficking to inhibit HIV-1 infection. SCIENCE ADVANCES 2019; 5:eaax0821. [PMID: 31663020 PMCID: PMC6795511 DOI: 10.1126/sciadv.aax0821] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Accepted: 09/26/2019] [Indexed: 05/22/2023]
Abstract
Using a cell-based assay monitoring differential protein transport in the secretory pathway coupled to high-content screening, we have identified three molecules that specifically reduce the delivery of the major co-receptor for HIV-1, CCR5, to the plasma membrane. They have no effect on the closely related receptors CCR1 and CXCR4. These molecules are also potent in primary macrophages as they markedly decrease HIV entry. At the molecular level, two of these molecules inhibit the critical palmitoylation of CCR5 and thereby block CCR5 in the early secretory pathway. Our results open a clear therapeutics avenue based on trafficking control and demonstrate that preventing HIV infection can be performed at the level of its receptor delivery.
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Affiliation(s)
- Gaelle Boncompain
- Institut Curie, PSL Research University, Sorbonne Université, Centre National de la Recherche Scientifique, UMR 144, Dynamics of Intracellular Organization Laboratory, F-75005 Paris, France
- Corresponding author. (G.B.); (F.P.)
| | - Floriane Herit
- Université de Paris, Institut Cochin, INSERM, CNRS, F-75014 Paris, France
| | - Sarah Tessier
- Institut Curie, PSL Research University, Translational Department, Biophenics High-Content Screening Laboratory, F-75005 Paris, France
| | - Aurianne Lescure
- Institut Curie, PSL Research University, Translational Department, Biophenics High-Content Screening Laboratory, F-75005 Paris, France
| | - Elaine Del Nery
- Institut Curie, PSL Research University, Translational Department, Biophenics High-Content Screening Laboratory, F-75005 Paris, France
| | - Pierre Gestraud
- Institut Curie, PSL Research University, Bioinformatics Facility, INSERM U900, F-75005 Paris, France
| | - Isabelle Staropoli
- INSERM U1108, Viral Pathogenesis Unit, Department of Virology, Institut Pasteur, F-75015 Paris, France
| | - Yuko Fukata
- Division of Membrane Physiology, Department of Molecular and Cellular Physiology, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan
| | - Masaki Fukata
- Division of Membrane Physiology, Department of Molecular and Cellular Physiology, National Institute for Physiological Sciences, National Institutes of Natural Sciences, Okazaki, Aichi 444-8787, Japan
| | - Anne Brelot
- INSERM U1108, Viral Pathogenesis Unit, Department of Virology, Institut Pasteur, F-75015 Paris, France
| | | | - Franck Perez
- Institut Curie, PSL Research University, Sorbonne Université, Centre National de la Recherche Scientifique, UMR 144, Dynamics of Intracellular Organization Laboratory, F-75005 Paris, France
- Corresponding author. (G.B.); (F.P.)
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3D-PP: A Tool for Discovering Conserved Three-Dimensional Protein Patterns. Int J Mol Sci 2019; 20:ijms20133174. [PMID: 31261733 PMCID: PMC6651053 DOI: 10.3390/ijms20133174] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2019] [Revised: 06/19/2019] [Accepted: 06/20/2019] [Indexed: 01/25/2023] Open
Abstract
Discovering conserved three-dimensional (3D) patterns among protein structures may provide valuable insights into protein classification, functional annotations or the rational design of multi-target drugs. Thus, several computational tools have been developed to discover and compare protein 3D-patterns. However, most of them only consider previously known 3D-patterns such as orthosteric binding sites or structural motifs. This fact makes necessary the development of new methods for the identification of all possible 3D-patterns that exist in protein structures (allosteric sites, enzyme-cofactor interaction motifs, among others). In this work, we present 3D-PP, a new free access web server for the discovery and recognition all similar 3D amino acid patterns among a set of proteins structures (independent of their sequence similarity). This new tool does not require any previous structural knowledge about ligands, and all data are organized in a high-performance graph database. The input can be a text file with the PDB access codes or a zip file of PDB coordinates regardless of the origin of the structural data: X-ray crystallographic experiments or in silico homology modeling. The results are presented as lists of sequence patterns that can be further analyzed within the web page. We tested the accuracy and suitability of 3D-PP using two sets of proteins coming from the Protein Data Bank: (a) Zinc finger containing and (b) Serotonin target proteins. We also evaluated its usefulness for the discovering of new 3D-patterns, using a set of protein structures coming from in silico homology modeling methodologies, all of which are overexpressed in different types of cancer. Results indicate that 3D-PP is a reliable, flexible and friendly-user tool to identify conserved structural motifs, which could be relevant to improve the knowledge about protein function or classification. The web server can be freely utilized at https://appsbio.utalca.cl/3d-pp/.
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Low Molecular Weight Fluorescent Probes (LMFPs) to Detect the Group 12 Metal Triad. CHEMOSENSORS 2019. [DOI: 10.3390/chemosensors7020022] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Fluorescence sensing, of d-block elements such as Cu2+, Fe3+, Fe2+, Cd2+, Hg2+, and Zn2+ has significantly increased since the beginning of the 21st century. These particular metal ions play essential roles in biological, industrial, and environmental applications, therefore, there has been a drive to measure, detect, and remediate these metal ions. We have chosen to highlight the low molecular weight fluorescent probes (LMFPs) that undergo an optical response upon coordination with the group 12 triad (Zn2+, Cd2+, and Hg2+), as these metals have similar chemical characteristics but behave differently in the environment.
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31
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McNeill RV, Mason AS, Hodson ME, Catto JWF, Southgate J. Specificity of the Metallothionein-1 Response by Cadmium-Exposed Normal Human Urothelial Cells. Int J Mol Sci 2019; 20:ijms20061344. [PMID: 30884885 PMCID: PMC6471910 DOI: 10.3390/ijms20061344] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2019] [Revised: 03/12/2019] [Accepted: 03/13/2019] [Indexed: 01/21/2023] Open
Abstract
Occupational and environmental exposure to cadmium is associated with the development of urothelial cancer. The metallothionein (MT) family of genes encodes proteins that sequester metal ions and modulate physiological processes, including zinc homeostasis. Little is known about the selectivity of expression of the different MT isoforms. Here, we examined the effect of cadmium exposure on MT gene and isoform expression by normal human urothelial (NHU) cell cultures. Baseline and cadmium-induced MT gene expression was characterized by next-generation sequencing and RT-PCR; protein expression was assessed by Western blotting using isoform-specific antibodies. Expression of the zinc transporter-1 (SLC30A1) gene was also assessed. NHU cells displayed transcription of MT-2A, but neither MT-3 nor MT-4 genes. Most striking was a highly inducer-specific expression of MT-1 genes, with cadmium inducing transcription of MT-1A, MT-1G, MT-1H, and MT-1M. Whereas MT-1G was also induced by zinc and nickel ions and MT-1H by iron, both MT-1A and MT-1M were highly cadmium-specific, which was confirmed for protein using isoform-specific antibodies. Protein but not transcript endured post-exposure, probably reflecting sequestration. SLC30A1 transcription was also affected by cadmium ion exposure, potentially reflecting perturbation of intracellular zinc homeostasis. We conclude that human urothelium displays a highly inductive profile of MT-1 gene expression, with two isoforms identified as highly specific to cadmium, providing candidate transcript and long-lived protein biomarkers of cadmium exposure.
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Affiliation(s)
- Rhiannon V McNeill
- Jack Birch Unit for Molecular Carcinogenesis, Department of Biology, York Biomedical Research Institute, University of York, York YO10 5DD, UK.
| | - Andrew S Mason
- Jack Birch Unit for Molecular Carcinogenesis, Department of Biology, York Biomedical Research Institute, University of York, York YO10 5DD, UK.
| | - Mark E Hodson
- Department of Environment and Geography, University of York, York YO10 5DD, UK.
| | - James W F Catto
- Academic Urology Unit, University of Sheffield, Sheffield S10 2TN, UK.
| | - Jennifer Southgate
- Jack Birch Unit for Molecular Carcinogenesis, Department of Biology, York Biomedical Research Institute, University of York, York YO10 5DD, UK.
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Zhang Z, Wang C, Zhang Z, Luo Y, Sun S, Zhang G. Cd(II) enhanced fluorescence and Zn(II) quenched fluorescence with phenylenevinylene terpyridine: A theoretical investigation. SPECTROCHIMICA ACTA. PART A, MOLECULAR AND BIOMOLECULAR SPECTROSCOPY 2019; 209:40-48. [PMID: 30343108 DOI: 10.1016/j.saa.2018.10.022] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/17/2018] [Revised: 10/02/2018] [Accepted: 10/12/2018] [Indexed: 06/08/2023]
Abstract
Phenylenevinylene terpyridine (mepvpt) shows chelation enhanced fluorescence (CHEF) with Cd(II) and chelation quenched fluorescence (CHQF) with Zn(II), respectively. To understand the behaviors, we studied their intrinsic optical properties using DFT/TDDFT methods. The results show that fluorescence quantum yields (FQY) of mepvpt, mepvpt-Cd and mepvpt-Zn are low due to high ISC rates from higher excited states rather than the S1 excited state. When mepvpt chelates Cd(II), the molecular structure becomes more planar and S3,4 → S0 radiation rates become higher than that of mepvpt, which results in CHEF. When mepvpt chelates Zn(II), a new S4 → S0 emission with low oscillator strength occurs and high S4 → Tn ISC rates appear, which leads to CHQF. This proposed mechanism of metal fluorescence enhancing/quenching suggests a design strategy for single-molecular multi-analyte sensors.
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Affiliation(s)
- Zhiyong Zhang
- Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249, China
| | - Chengjun Wang
- College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xian, Shaanxi 710021, China; Shaanxi Extend Oil (Group) Co., LTD. Research Institute, Xian, Shaanxi 710075, China.
| | - Zhongzhi Zhang
- Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249, China
| | - Yijing Luo
- Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249, China
| | - Shanshan Sun
- Laboratory of Heavy Oil Processing, College of Chemical Engineering, China University of Petroleum, Beijing 102249, China
| | - Guangqing Zhang
- School of Mechanical, Materials & Mechatronic Engineering, University of Wollongong, Wollongong, NSW 2522, Australia
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Guo X, Wang W, Yuan X, Yang Y, Tian Q, Xiang Y, Sun Y, Bai Z. Heavy metal redistribution mechanism assisted magnetic separation for highly-efficient removal of lead and cadmium from human blood. J Colloid Interface Sci 2019; 536:563-574. [DOI: 10.1016/j.jcis.2018.10.095] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2018] [Revised: 10/28/2018] [Accepted: 10/29/2018] [Indexed: 12/23/2022]
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Filonov D, Tice R, Luo R, Grotegut C, Van Kanegan MJ, Ludlow JW, Il'yasova D, Kinev A. Initial Assessment of Variability of Responses to Toxicants in Donor-Specific Endothelial Colony Forming Cells. Front Public Health 2018; 6:369. [PMID: 30622937 PMCID: PMC6308159 DOI: 10.3389/fpubh.2018.00369] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Accepted: 12/03/2018] [Indexed: 12/14/2022] Open
Abstract
There is increased interest in using high throughput in vitro assays to characterize human population variability in response to toxicants and drugs. Utilizing primary human endothelial colony-forming cells (ECFCs) isolated from blood would be highly useful for this purpose because these cells are involved in neonatal and adult vasculogenesis. We characterized the cytotoxicity of four known toxic chemicals (NaAsO2, CdCl2, tributyltin [TBT], and menadione) and their four relatively nontoxic counterparts (Na2HAsO4, ZnCl2, SnCl2, and phytonadione, respectively) in eight ECFC clones representing four neonatal donors (2 male and 2 female donors, 2 clones per donor). ECFCs were exposed to 9 concentrations of each chemical in duplicate; cell viability was evaluated 48 h later using the fluorescent vital dye fluorescent dye 5-Carboxyfluorescein Diacetate (CFDA), yielding concentration-effect curves from each experiment. Technical (day-to-day) variability of the assay, assessed from three independent experiments, was low: p-values for the differences of results were 0.74 and 0.64 for the comparison of day 2 vs. day 1 and day 3 vs. day 1, respectively. The statistical analysis used to compare the entire concentration-effect curves has revealed significant differences in levels of cytotoxicity induced by the toxic and relatively nontoxic chemical counterparts, demonstrating that donor-specific ECFCs can clearly differentiate between these two groups of chemicals. Partitioning of the total variance in the nested design assessed the contributions of between-clone and between-donor variability for different levels of cytotoxicity. Individual ECFC clones demonstrated highly reproducible responses to the chemicals. The most toxic chemical was TBT, followed by NaAsO2, CdCl2, and Menadione. Nontoxic counterparts exhibited low cytotoxicity at the higher end of concentration ranges tested. Low variability was observed between ECFC clones obtained from the same donor or different donors for CdCl2, NaAsO2, and TBT, but for menadione, the between-donor variability was much greater than the between-clone variability. The low between-clone variability indicates that an ECFC clone may represent an individual donor in cell-based assays, although this finding must be confirmed using a larger number of donors. Such confirmation would demonstrate that an in vitro ECFC-based testing platform can be used to characterize the inter-individual variability of neonatal ECFCs exposed to drugs and/or environmental toxicants.
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Affiliation(s)
| | - Raymond Tice
- Creative Scientist, Inc.Durham, NC, United States
| | - Ruiyan Luo
- School of Public Health, Georgia State University, Atlanta, GA, United States
| | - Chad Grotegut
- Duke University Medical Center, Durham, NC, United States
| | | | | | - Dora Il'yasova
- School of Public Health, Georgia State University, Atlanta, GA, United States
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Sloup V, Jankovská I, Száková J, Magdálek J, Sloup S, Langrová I. Effects of tapeworm infection on absorption and excretion of zinc and cadmium by experimental rats. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:35464-35470. [PMID: 30350142 DOI: 10.1007/s11356-018-3397-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Accepted: 10/04/2018] [Indexed: 06/08/2023]
Abstract
The main objective of this study was to determine how rat tapeworms affect the excretion of zinc and cadmium through rat feces. Male rats (Rattus norvegicus var. alba) were divided into four groups, and the experiment was conducted over a 6-week period. The control groups (00; 0T) were provided with a standard ST-1 rodent mixture and received 10.5 mg of Zn/week. Groups P0 and PT were fed a mixture supplemented with the hyperaccumulating plant Arabidopsis halleri at a dosage of 123 mg Zn/week and 2.46 mg Cd/week. Groups 0T and PT were infected with the rat tapeworm (Hymenolepis diminuta). Fecal samples were collected 24 h post exposure. Zinc and cadmium concentrations in rat feces were analyzed using inductively coupled plasma optical emission spectrometry. Tapeworm presence decreased the amount of metals excreted through the feces of the host throughout the entire experiment, with the exception of 1 week (control group). No statistically significant differences between zinc excretion rates in the control groups (00 and 0T) were detected at any time throughout the experiment. A statistically significant difference between zinc excretion rates (p < 0.05) in the exposed groups (P0 and PT) was detected in 2 of the 6 monitored weeks. Group PT excreted significantly less cadmium (p < 0.01) than group P0 did in three of the 6 weeks. Overall, our results indicate that tapeworms are able to influence the excretion of metals by their host. Tapeworms accumulate metals from intestinal contents. It is not clear whether tapeworms carry out this process before the host tissues absorb the metals from the intestines or the tapeworms accumulate metals excreted from the body of the host back to the intestines. Most likely, it is a combination of both phenomena.
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Affiliation(s)
- Vladislav Sloup
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic.
| | - Ivana Jankovská
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Jiřina Száková
- Department of Agroenvironmental Chemistry and Plant Nutrition, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Jan Magdálek
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Simon Sloup
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
| | - Iva Langrová
- Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, Kamýcká 957, 165 21, Prague 6, Suchdol, Czech Republic
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Chen C, Xun P, Tsinovoi C, McClure LA, Brockman J, MacDonald L, Cushman M, Cai J, Kamendulis L, Mackey J, He K. Urinary cadmium concentration and the risk of ischemic stroke. Neurology 2018; 91:e382-e391. [PMID: 29934425 DOI: 10.1212/wnl.0000000000005856] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 04/13/2018] [Indexed: 01/10/2023] Open
Abstract
OBJECTIVES To examine the association between urinary cadmium levels and the incidence of ischemic stroke and to explore possible effect modifications. METHODS A case-cohort study was designed nested in the Reasons for Geographic and Racial Differences in Stroke (REGARDS) study, including 680 adjudicated incident cases of ischemic stroke and 2,540 participants in a randomly selected subcohort. Urinary creatinine-corrected cadmium concentration was measured at baseline. Multivariable-adjusted hazard ratios (HRs) and the corresponding 95% confidence intervals (CIs) were estimated with the Barlow weighting method for the Cox proportional hazards regression model. RESULTS The median urinary cadmium concentration was 0.42 (interquartile range 0.27-0.68) μg/g creatinine. After adjustment for potential confounders, urinary cadmium was associated with increased incidence of ischemic stroke (quintile 5 vs quintile 1: HR 1.50, 95% CI 1.01-2.22, p for trend = 0.02). The observed association was more pronounced among participants in the lowest serum zinc tertile (tertile 3 vs tertile 1: HR 1.82, 95% CI 1.06-3.11, p for trend = 0.004, p for interaction = 0.05) but was attenuated and became nonsignificant among never smokers (tertile 3 vs tertile 1: never smokers: HR 1.27, 95% CI 0.80-2.03, p for trend = 0.29; ever smokers: HR 1.60, 95% CI 1.06-2.43, p for trend = 0.07, p for interaction = 0.51). CONCLUSIONS Findings from this study suggest that cadmium exposure may be an independent risk factor for ischemic stroke in the US general population. Never smoking and maintaining a high serum zinc level may ameliorate the potential adverse effects of cadmium exposure.
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Affiliation(s)
- Cheng Chen
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill
| | - Pengcheng Xun
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill
| | - Cari Tsinovoi
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill
| | - Leslie A McClure
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill
| | - John Brockman
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill
| | - Leslie MacDonald
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill
| | - Mary Cushman
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill
| | - Jianwen Cai
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill
| | - Lisa Kamendulis
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill
| | - Jason Mackey
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill
| | - Ka He
- From the Departments of Epidemiology and Biostatistics (C.C., P.X., C.T., K.H.) and Environmental Health (L.K.), School of Public Health, and Department of Neurology (J.M.), School of Medicine, Indiana University, Bloomington; Department of Epidemiology and Biostatistics (L.A.M.), Dornsife School of Public Health, Drexel University, Philadelphia, PA; Columbia Research Reactor (J.B.), University of Missouri; National Institute for Occupational Safety and Health (L.M.), Centers for Disease Control and Prevention, Washington, DC; Department of Medicine (M.C.), Larner College of Medicine, University of Vermont, Burlington; and Department of Biostatistics (J.C.), University of North Carolina at Chapel Hill.
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Cadmium effects on sperm morphology and semenogelin with relates to increased ROS in infertile smokers: An in vitro and in silico approach. Reprod Biol 2018; 18:189-197. [DOI: 10.1016/j.repbio.2018.04.003] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2018] [Revised: 04/25/2018] [Accepted: 04/26/2018] [Indexed: 12/24/2022]
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Poirier I, Pallud M, Kuhn L, Hammann P, Demortière A, Jamali A, Chicher J, Caplat C, Gallon RK, Bertrand M. Toxicological effects of CdSe nanocrystals on the marine diatom Phaeodactylum tricornutum: The first mass spectrometry-based proteomic approach. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2018; 152:78-90. [PMID: 29407785 DOI: 10.1016/j.ecoenv.2018.01.043] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2017] [Revised: 01/17/2018] [Accepted: 01/19/2018] [Indexed: 06/07/2023]
Abstract
UNLABELLED In the marine environment, benthic diatoms from estuarine and coastal sediments are among the first targets of nanoparticle pollution whose potential toxicity on marine organisms is still largely unknown. It is therefore relevant to improve our knowledge of interactions between these new pollutants and microalgae, the key players in the control of marine resources. In this study, the response of P. tricornutum to CdSe nanocrystals (CdSe NPs) of 5 nm (NP5) and 12 nm (NP12) in diameter was evaluated through microscopic, physiological, biochemical and proteomic approaches. NP5 and NP12 affected cell growth but oxygen production was only slightly decreased by NP5 after 1-d incubation time. In our experimental conditions, a high CdSe NP dissolution was observed during the first day of culture, leading to Cd bioaccumulation and oxidative stress, particularly with NP12. However, after a 7-day incubation time, proteomic analysis highlighted that P. tricornutum responded to CdSe NP toxicity by regulating numerous proteins involved in protection against oxidative stress, cellular redox homeostasis, Ca2+ regulation and signalling, S-nitrosylation and S-glutathionylation processes and cell damage repair. These proteome changes allowed algae cells to regulate their intracellular ROS level in contaminated cultures. P. tricornutum was also capable to control its intracellular Cd concentration at a sufficiently low level to preserve its growth. To our knowledge, this is the first work allowing the identification of proteins differentially expressed by P. tricornutum subjected to NPs and thus the understanding of some molecular pathways involved in its cellular response to nanoparticles. SIGNIFICANCE The microalgae play a key role in the control of marine resources. Moreover, they produce 50% of the atmospheric oxygen. CdSe NPs are extensively used in the industry of renewable energies and it is regrettably expected that these pollutants will sometime soon appear in the marine environment through surface runoff, urban effluents and rivers. Since estuarine and coastal sediments concentrate pollutants, benthic microalgae which live in superficial sediments will be among the first targets of nanoparticle pollution. Thus, it is relevant to improve our knowledge of interactions between diatoms and nanoparticles. Proteomics is a powerful tool for understanding the molecular mechanisms triggered by nanoparticle exposure, and our study is the first one to use this tool to identify proteins differentially expressed by P. tricornutum subjected to CdSe nanocrystals. This work is fundamental to improve our knowledge about the defence mechanisms developed by algae cells to counteract damage caused by CdSe NPs.
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Affiliation(s)
- Isabelle Poirier
- Institut National des Sciences et Techniques de la Mer, Conservatoire National des Arts et Métiers, 50103 Cherbourg en Cotentin Cedex, France; Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130 Cherbourg en Cotentin, France.
| | - Marie Pallud
- Institut National des Sciences et Techniques de la Mer, Conservatoire National des Arts et Métiers, 50103 Cherbourg en Cotentin Cedex, France; IFREMER, LEAD NC, Equipe Ecophysiologie Station aquacole de Saint Vincent, Boulouparis, 98897 Nouvelle Calédonie Cedex, France.
| | - Lauriane Kuhn
- Plateforme Protéomique Strasbourg Esplanade, CNRS FRC 1589, Institut de Biologie Moléculaire et Cellulaire, 67084 Strasbourg Cedex, France.
| | - Philippe Hammann
- Plateforme Protéomique Strasbourg Esplanade, CNRS FRC 1589, Institut de Biologie Moléculaire et Cellulaire, 67084 Strasbourg Cedex, France.
| | - Arnaud Demortière
- Laboratoire de Réactivité et Chimie des Solides, CNRS UMR 7314, Université de Picardie Jules Verne, 80039 Amiens Cedex 1, France; Réseau sur le Stockage Electrochimique de l'Energie (RS2E), CNRS FR 3459, 80039 Amiens Cedex 1, France; Center for Nanoscale Materials, Argonne National Laboratory, Argonne, IL 60439, United States.
| | - Arash Jamali
- Laboratoire de Réactivité et Chimie des Solides, CNRS UMR 7314, Université de Picardie Jules Verne, 80039 Amiens Cedex 1, France.
| | - Johana Chicher
- Plateforme Protéomique Strasbourg Esplanade, CNRS FRC 1589, Institut de Biologie Moléculaire et Cellulaire, 67084 Strasbourg Cedex, France.
| | - Christelle Caplat
- UMR BOREA, UCBN, MNHN, UPMC, CNRS-7208, IRD-207, Institut de Biologie Fondamentale et Appliquée, Normandie Université, UNICAEN, 14032 Caen Cedex 5, France.
| | - Régis Kevin Gallon
- Institut National des Sciences et Techniques de la Mer, Conservatoire National des Arts et Métiers, 50103 Cherbourg en Cotentin Cedex, France; Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130 Cherbourg en Cotentin, France.
| | - Martine Bertrand
- Institut National des Sciences et Techniques de la Mer, Conservatoire National des Arts et Métiers, 50103 Cherbourg en Cotentin Cedex, France; Laboratoire Universitaire des Sciences Appliquées de Cherbourg, EA4253, Normandie Université, UNICAEN, 50130 Cherbourg en Cotentin, France.
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Mierek-Adamska A, Dąbrowska GB, Blindauer CA. The type 4 metallothionein from Brassica napus seeds folds in a metal-dependent fashion and favours zinc over other metals. Metallomics 2018; 10:1430-1443. [DOI: 10.1039/c8mt00161h] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rapeseed MT4 only folds properly in the presence of Zn2+ and thus may serve as a selectivity filter for metal accumulation in plant embryos.
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Affiliation(s)
- Agnieszka Mierek-Adamska
- Department of Genetics
- Faculty of Biology and Environmental Protection
- Nicolaus Copernicus University
- 87-100 Toruń
- Poland
| | - Grażyna B. Dąbrowska
- Department of Genetics
- Faculty of Biology and Environmental Protection
- Nicolaus Copernicus University
- 87-100 Toruń
- Poland
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Arévalo-Gardini E, Arévalo-Hernández CO, Baligar VC, He ZL. Heavy metal accumulation in leaves and beans of cacao (Theobroma cacao L.) in major cacao growing regions in Peru. THE SCIENCE OF THE TOTAL ENVIRONMENT 2017; 605-606:792-800. [PMID: 28683423 DOI: 10.1016/j.scitotenv.2017.06.122] [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: 04/04/2017] [Revised: 06/14/2017] [Accepted: 06/15/2017] [Indexed: 05/17/2023]
Abstract
Peru is one of the leading exporters of organic cacao beans in the world. However, the accumulation of heavy metals in cacao beans represents a problem for cocoa bean export and chocolate quality. The aim of this study was to investigate the distribution and accumulation of heavy metals in cacao leaves and cocoa beans in three major cacao growing regions of Peru. The study was conducted in cacao plantations of 10 to 15years old in three regions of Peru: North (Regions of Tumbes, Piura, Cajamarca, and Amazonas); Center (Regions of Huánuco and San Martin) and South (Junin and Cuzco). Samples of leaf and cacao beans were collected from 70 cacao plantations, and the nature of cacao clone or genotype sampled was recorded. The concentrations of heavy metals such as Cd, Cr, Cu, Fe, Mn, Ni, Pb and Zn in leaves and beans were determined using atomic absorption spectrophotometer. Overall, concentrations of heavy metals were below the critical limits; however, the presence of high levels of Cd in cacao grown in Amazonas, Piura, and Tumbes regions is of primary concern. Plantations of cacao with different cacao clones show differences in Cd accumulation both in leaves and cocoa beans. Therefore, it is promising to screen low Cd accumulator cacao genotypes for safe production of cacao on lightly to moderately Cd contaminated soils. Also, synergism between Zn and Cd present both in plant and soil suggests that Zn has a direct effect on Cd accumulation in cacao.
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Affiliation(s)
| | | | - Virupax C Baligar
- U.S. Department of Agriculture/Agricultural Research Service, Beltsville Agricultural Research Center, Beltsville, MD 20705, USA.
| | - Zhenli L He
- Department of Soil and Water Sciences, Indian River Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, Fort Pierce, FL 34945, USA
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Benáková M, Ahmadi H, Dučaiová Z, Tylová E, Clemens S, Tůma J. Effects of Cd and Zn on physiological and anatomical properties of hydroponically grown Brassica napus plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2017; 24:20705-20716. [PMID: 28714046 DOI: 10.1007/s11356-017-9697-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2016] [Accepted: 07/04/2017] [Indexed: 06/07/2023]
Abstract
Clarifying the connection between metal exposure and anatomical changes represents an important challenge for a better understanding of plant phytoextraction potential. A hydroponic screening experiment was carried out to evaluate the effects of combined interactions of Cd and Zn on mineral uptake (Mg, K, Ca, Na) and on the physiological and anatomical characteristics of Brassica napus L cv. Cadeli, Viking, and Navajo. Plants were exposed to 5 μM Cd (CdCl2), 10 μM Zn (ZnSO4), or both Cd + Zn, for 14 days. Cadmium exposure led to a significant reduction in root growth, shoot biomass, and chlorophyll content. After Cd-only and Cd + Zn treatment, primary root tips became thicker and pericycle cells were enlarged compared to the control and Zn-only treatment. No differences between metals were observed under UV excitation, where all treatments showed more intensive autofluorescence connected with lignin/suberin accumulation compared to control conditions. The highest concentrations of Cd and Zn were found in the roots of all tested plants, and translocation factors did not exceed the threshold of 1.0. The root mineral composition was not affected by any treatment. In the shoots, the Mg concentration slightly increased after Cd-only and Cd + Zn treatments, whereas Zn-only treatment caused a sharp decrease in Ca content. Slight increases in K were seen after the addition of Zn. Significantly higher concentrations of Na were induced by Cd- or Zn-only treatment.
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Affiliation(s)
- Martina Benáková
- Department of Biology, Faculty of Science, University of Hradec Králové, Rokitanského 62, 500 03, Hradec Králové, Czech Republic.
| | - Hassan Ahmadi
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Zuzana Dučaiová
- Department of Biology, Faculty of Science, University of Hradec Králové, Rokitanského 62, 500 03, Hradec Králové, Czech Republic
| | - Edita Tylová
- Department of Experimental Plant Biology, Charles University, Prague, Czech Republic
| | - Stephan Clemens
- Department of Plant Physiology, University of Bayreuth, Bayreuth, Germany
| | - Jiří Tůma
- Department of Biology, Faculty of Science, University of Hradec Králové, Rokitanského 62, 500 03, Hradec Králové, Czech Republic
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Jacobson T, Priya S, Sharma SK, Andersson S, Jakobsson S, Tanghe R, Ashouri A, Rauch S, Goloubinoff P, Christen P, Tamás MJ. Cadmium Causes Misfolding and Aggregation of Cytosolic Proteins in Yeast. Mol Cell Biol 2017; 37:e00490-16. [PMID: 28606932 PMCID: PMC5559669 DOI: 10.1128/mcb.00490-16] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2016] [Revised: 10/05/2016] [Accepted: 05/31/2017] [Indexed: 12/22/2022] Open
Abstract
Cadmium is a highly poisonous metal and is classified as a human carcinogen. While its toxicity is undisputed, the underlying in vivo molecular mechanisms are not fully understood. Here, we demonstrate that cadmium induces aggregation of cytosolic proteins in living Saccharomyces cerevisiae cells. Cadmium primarily targets proteins in the process of synthesis or folding, probably by interacting with exposed thiol groups in not-yet-folded proteins. On the basis of in vitro and in vivo data, we show that cadmium-aggregated proteins form seeds that increase the misfolding of other proteins. Cells that cannot efficiently protect the proteome from cadmium-induced aggregation or clear the cytosol of protein aggregates are sensitized to cadmium. Thus, protein aggregation may contribute to cadmium toxicity. This is the first report on how cadmium causes misfolding and aggregation of cytosolic proteins in vivo The proposed mechanism might explain not only the molecular basis of the toxic effects of cadmium but also the suggested role of this poisonous metal in the pathogenesis of certain protein-folding disorders.
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Affiliation(s)
- Therese Jacobson
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Smriti Priya
- Systems Toxicology and Health Risk Assessment Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Sandeep K Sharma
- Nanotherapeutics and Nanomaterial Toxicology Group, CSIR-Indian Institute of Toxicology Research, Lucknow, Uttar Pradesh, India
| | - Stefanie Andersson
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Sofia Jakobsson
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Robbe Tanghe
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Arghavan Ashouri
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
| | - Sebastien Rauch
- Water Environment Technology, Department of Civil and Environmental Engineering, Chalmers University of Technology, Gothenburg, Sweden
| | - Pierre Goloubinoff
- Department of Plant Molecular Biology, Lausanne University, Lausanne, Switzerland
| | - Philipp Christen
- Department of Biochemistry, University of Zurich, Zurich, Switzerland
| | - Markus J Tamás
- Department of Chemistry and Molecular Biology, University of Gothenburg, Gothenburg, Sweden
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Bonaventura P, Lamboux A, Albarède F, Miossec P. Regulatory effects of zinc on cadmium-induced cytotoxicity in chronic inflammation. PLoS One 2017; 12:e0180879. [PMID: 28742830 PMCID: PMC5526586 DOI: 10.1371/journal.pone.0180879] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 06/22/2017] [Indexed: 02/01/2023] Open
Abstract
OBJECTIVES Zinc (Zn) has major effects on immune system activation while Cadmium (Cd) has anti-inflammatory and anti-proliferative effects in several chronic inflammatory contexts. The aim of this work was to investigate by which mechanisms Zn could compete with Cd and eventually counteract its deleterious effects. Rheumatoid arthritis (RA) synoviocytes exposed to cytokines were used as a model of chronic inflammation; osteoarthritis (OA) synoviocytes were used as control. METHODS Cell/medium fractionation constants were analyzed for different metals by inductively-coupled-plasma mass-spectrometry by comparison to the 70Zn spike. Interleukin-17 (IL-17) and tumor necrosis factor-alpha (TNF-α) were used to mimic inflammation. Gene expression of ZIP-8 importer, metallothioneins-1 (MT-1s) and the ratio between metalloprotease-3 and the tissue inhibitor of metalloproteinases (MMP-3)/TIMP-1) were evaluated after pre-exposure to cytokines and Cd, with or without the addition of exogenous Zn (0.9 ppm). Cell viability was measured by neutral red assay and IL-6 production by ELISA. RESULTS Synoviocytes selectively absorbed and retained Cd in comparison to Zn. Metal import increased with IL-17/TNF-α exposure, through the enhanced ZIP-8 expression. Zn did not modify ZIP-8 expression, while Cd reduced it (p<0.05). Zn induced a reduction of Cd-induced MT-1s expression, in particular of MT-1X (3-fold), and subsequently the final intra-cellular content of Cd. By reducing Cd accumulation in cells, Zn reversed Cd anti-proliferative and anti-inflammatory effects but preserved the low MMP-3/TIMP-1 ratio induced by Cd, which was enhanced by inflammatory conditions. CONCLUSION Zinc counteracts the deleterious effect of Cd by reducing its import and accumulation in the cell, without the reactivation of destructive pathways such as MMPs.
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Affiliation(s)
- Paola Bonaventura
- Department of Immunology and Rheumatology, Immunogenomics and inflammation research Unit EA 4130, University of Lyon, Edouard Herriot Hospital, Lyon, France
| | - Aline Lamboux
- Geology Laboratory–Department of Earth Sciences, Ecole Normale Supérieure de Lyon and CNRS Lyon, Lyon, France
| | - Francis Albarède
- Geology Laboratory–Department of Earth Sciences, Ecole Normale Supérieure de Lyon and CNRS Lyon, Lyon, France
| | - Pierre Miossec
- Department of Immunology and Rheumatology, Immunogenomics and inflammation research Unit EA 4130, University of Lyon, Edouard Herriot Hospital, Lyon, France
- * E-mail:
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Protective effect of low dose intra-articular cadmium on inflammation and joint destruction in arthritis. Sci Rep 2017; 7:2415. [PMID: 28546541 PMCID: PMC5445071 DOI: 10.1038/s41598-017-02611-5] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/25/2017] [Accepted: 04/06/2017] [Indexed: 11/09/2022] Open
Abstract
Synovium hyperplasia characterizes joint diseases, such as rheumatoid arthritis (RA). The cytotoxic effect of low-dose Cadmium (Cd) was tested in vitro and ex vivo on synoviocytes, the mesenchymal key effector cells of inflammation and proliferation in arthritis. The anti-inflammatory and anti-proliferative effects of Cd were tested in vivo by intra-articular injection in the adjuvant induced arthritis rat joints, where the clinical scores and the consequences of arthritis were evaluated. Cell death through apoptosis was highly induced by Cd in inflammatory synoviocytes (80% reduction of cell viability, p < 0.01). TNF plus IL-17 cytokine combination induced a two-fold increase of Cd cell content by enhancing the ZIP-8 importer and the MT-1 homeostasis regulator expression. Addition of Cd reduced IL-6 production in TNF plus IL-17-activated synoviocytes (up to 83%, p < 0.05) and in ex-vivo synovium biopsies (up to 94%, p < 0.01). Cd-injection in rat joints improved arthritis, reducing clinical scores (arthritic score reduced from 4 to 2, p < 0.01), inflammatory cell recruitment (up to 50%, p < 0.01) and protecting from bone/cartilage destruction. This proof of concept study is supported by the limited Cd spread in body reservoirs, with low-dose Cd providing a safe risk/benefit ratio, without toxic effects on other cell types and organs.
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Tang L, Yao A, Tang Y, Liu J, Liu X, Qiu R. Transcriptional up-regulation of genes involved in photosynthesis of the Zn/Cd hyperaccumulator Sedum alfredii in response to zinc and cadmium. CHEMOSPHERE 2016; 164:190-200. [PMID: 27591370 DOI: 10.1016/j.chemosphere.2016.08.026] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 07/25/2016] [Accepted: 08/04/2016] [Indexed: 05/09/2023]
Abstract
Zinc (Zn) and cadmium (Cd) are two closely related chemical elements with very different biological roles in photosynthesis. Zinc plays unique biochemical functions in photosynthesis. Previous studies suggested that in some Zn/Cd hyperaccumulators, many steps in photosynthesis may be Cd tolerant or even Cd stimulated. Using RNA-seq data, we found not only that Cd and Zn both up-regulated the CA1 gene, which encodes a β class carbonic anhydrase (CA) in chloroplasts, but that a large number of other Zn up-regulated genes in the photosynthetic pathway were also significantly up-regulated by Cd in leaves of the Zn/Cd hyperaccumulator Sedum alfredii. These genes also include chloroplast genes involved in transcription and translation (rps18 and rps14), electron transport and ATP synthesis (atpF and ccsA), Photosystem II (PSBI, PSBM, PSBK, PSBZ/YCF9, PSBO-1, PSBQ, LHCB1.1, LHCB1.4, LHCB2.1, LHCB4.3 and LHCB6) and Photosystem I (PSAE-1, PSAF, PSAH2, LHCA1 and LHCA4). Cadmium and Zn also up-regulated the VAR1 gene, which encodes the ATP-dependent zinc metalloprotease FTSH 5 (a member of the FtsH family), and the DAG gene, which influences chloroplast differentiation and plastid development, and the CP29 gene, which supports RNA processing in chloroplasts and has a potential role in signal-dependent co-regulation of chloroplast genes. Further morphological parameters (dry biomass, cross-sectional thickness, chloroplast size, chlorophyll content) and chlorophyll fluorescence parameters confirmed that leaf photosynthesis of S. alfredii responded to Cd much as it did to Zn, which will contribute to our understanding of the positive effects of Zn and Cd on growth of this plant.
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Affiliation(s)
- Lu Tang
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, PR China
| | - Aijun Yao
- Department of Land Resource and Environment, School of Geography and Planning, Sun Yat-Sen University, Guangzhou, PR China
| | - Yetao Tang
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, PR China; Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou, PR China.
| | - Jian Liu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou, PR China
| | - Xi Liu
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, PR China
| | - Rongliang Qiu
- School of Environmental Science and Engineering, Sun Yat-Sen University, Guangzhou, PR China; Guangdong Provincial Key Lab of Environmental Pollution Control and Remediation Technology (Sun Yat-sen University), Guangzhou, PR China.
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Carra BJ, Till SN, VanGundy RA, Pike RD, Bebout DC. Group 12 complexes of 2,6-bis([(2-pyridinylmethyl)thio]methyl)pyridine: Synthesis and characterization by X-ray crystallography and proton NMR. Polyhedron 2016. [DOI: 10.1016/j.poly.2015.12.038] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Tarasava K, Freisinger E. Investigating the influence of histidine residues on the metal ion binding ability of the wheat metallothionein γ-Ec-1 domain. J Inorg Biochem 2015; 153:197-203. [DOI: 10.1016/j.jinorgbio.2015.08.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2015] [Revised: 07/15/2015] [Accepted: 08/05/2015] [Indexed: 10/23/2022]
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Cai Y, Lee J, Wang W, Yang JM, Qian GY. Effect of Cd2+ on muscle type of creatine kinase: Inhibition kinetics integrating computational simulations. Int J Biol Macromol 2015; 83:233-41. [PMID: 26642840 DOI: 10.1016/j.ijbiomac.2015.11.077] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2015] [Revised: 11/25/2015] [Accepted: 11/26/2015] [Indexed: 12/24/2022]
Abstract
Creatine kinase (EC 2.7.3.2, CK) plays an important role in cellular energy metabolism and homeostasis by catalyzing the transfer of phosphate between ATP and creatine phosphate. We investigated the effects of Cd2+ on muscle type of creatine kinase from Pelodiscus sinensis (PSCKM). Cd2+ conspicuously inactivated the activity of PSCKM (IC50=0.062 mM) in a first-order kinetic process and exhibited non-competitive inhibition with creatine and ATP. A conformational study showed that Cd2+ induced tertiary structure changes in PSCKM with exposure of hydrophobic surfaces. The addition of osmolytes, such as glycine and proline, partially reactivated the Cd2+-mediated inactive PSCKM. Additionally, molecular dynamics and docking simulations between PSCKM and Cd2+ were conducted to show that Cd2+ blocked the entrance of ATP to the active site, and this result is consistent with the experimental results showing Cd2+-induced inactivation of PSCKM. Our study demonstrates the effect of Cd2+ on PSCKM enzymatic function and unfolding, including the protective effects of osmolytes on PSCKM inactivation. This study provides important insights into the changes in the PSCKM metabolic enzyme of ectothermic animals in response to the environment.
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Affiliation(s)
- Yan Cai
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China
| | - Jinhyuk Lee
- Korean Bioinformation Center (KOBIC), Korea Research Institute of Bioscience and Biotechnology, Daejeon, 305-806, Republic of Korea; Department of Nanobiotechnology and Bioinformatics, University of Sciences and Technology, Daejeon, 305-350, Republic of Korea
| | - Wei Wang
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China
| | - Jun-Mo Yang
- Department of Dermatology, Sungkyunkwan University School of Medicine, Samsung Medical Center, Seoul, 135-710, Republic of Korea.
| | - Guo-Ying Qian
- College of Biological and Environmental Sciences, Zhejiang Wanli University, Ningbo, 315100, PR China.
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Impact of Cadmium on Intracellular Zinc Levels in HepG2 Cells: Quantitative Evaluations and Molecular Effects. BIOMED RESEARCH INTERNATIONAL 2015; 2015:949514. [PMID: 26339654 PMCID: PMC4538774 DOI: 10.1155/2015/949514] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/17/2014] [Accepted: 03/02/2015] [Indexed: 01/12/2023]
Abstract
Cadmium is classified as a human carcinogen, and its disturbance in zinc homeostasis has been well established. However, its extent as well as molecular mechanisms involved in cadmium carcinogenesis has yet to be fully clarified. To this end, we used the zinc specific probe Zinquin to visualize and to quantitatively evaluate changes in the concentration of labile zinc, in an in vitro model of human hepatic cells (HepG2) exposed to cadmium. A very large increase (+93%) of intracellular labile zinc, displaced by cadmium from the zinc proteome, was measured when HepG2 were exposed to 10 µM cadmium for 24 hrs. Microarray expression profiling showed that in cells, featuring an increase of labile zinc after cadmium exposure, one of the top regulated genes is Snail1 (+3.6), which is included in the adherens junction pathway and linked to cancer. In the same pathway MET, TGF-βR, and two members of the Rho-family GTPase, Rac, and cdc42 all implicated in the loss of adherence features and acquisition of migratory and cancer properties were regulated, as well. The microRNAs analysis showed a downregulation of miR-34a and miR-200a, both implicated in the epithelial-mesenchymal transition. These microRNAs results support the role played by zinc in affecting gene expression at the posttranscriptional level.
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