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Guan L, Wang Y, Lin L, Zou Y, Qiu L. Variations in Blood Copper and Possible Mechanisms During Pregnancy. Biol Trace Elem Res 2024; 202:429-441. [PMID: 37777692 DOI: 10.1007/s12011-023-03716-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/09/2023] [Accepted: 05/24/2023] [Indexed: 10/02/2023]
Abstract
Copper (Cu), an essential trace element, is crucial for both the mother and fetus. Currently, an increasing number of studies have focused on blood copper levels during pregnancy. Studies have found that blood copper levels in pregnant women are higher than those in reproductive-age women, but the trend, mainly in the 2nd and 3rd trimester, is still controversial. Most studies showed that blood copper levels gradually increased during pregnancy, while some studies found that blood copper levels remained stable or even decreased in the 3rd trimester. The possible mechanisms of variations in blood copper during pregnancy include the influence of estrogen (hepatic uptake and excretion, ceruloplasmin synthesis, maternal-fetal transport, etc.), the interaction of other trace elements (Fe, Zn, etc.) and other factors. Among them, maternal-fetal copper transport caused by elevated estrogen may be the main reason for the inconsistencies observed in the 2nd and 3rd trimester during pregnancy. However, there are some mechanisms require further investigation. In the future, the trend and mechanisms of blood copper during pregnancy should be explored more deeply to help doctors better monitor copper status and detect copper abnormalities in time.
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Affiliation(s)
- Lihua Guan
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, 100730, People's Republic of China
| | - Yifei Wang
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, 100730, People's Republic of China
| | - Liling Lin
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, 100730, People's Republic of China
| | - Yutong Zou
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, 100730, People's Republic of China
| | - Ling Qiu
- Department of Laboratory Medicine, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, 100730, People's Republic of China.
- State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Peking Union Medical College & Chinese Academy of Medical Science, Beijing, 100730, People's Republic of China.
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2
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Chen Z, Li YY, Liu X. Copper homeostasis and copper-induced cell death: Novel targeting for intervention in the pathogenesis of vascular aging. Biomed Pharmacother 2023; 169:115839. [PMID: 37976889 DOI: 10.1016/j.biopha.2023.115839] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Revised: 10/25/2023] [Accepted: 11/01/2023] [Indexed: 11/19/2023] Open
Abstract
Copper-induced cell death, also known as cuproptosis, is distinct from other types of cell death such as apoptosis, necrosis, and ferroptosis. It can trigger the accumulation of lethal reactive oxygen species, leading to the onset and progression of aging. The significant increases in copper ion levels in the aging populations confirm a close relationship between copper homeostasis and vascular aging. On the other hand, vascular aging is also closely related to the occurrence of various cardiovascular diseases throughout the aging process. However, the specific causes of vascular aging are not clear, and different living environments and stress patterns can lead to individualized vascular aging. By exploring the correlations between copper-induced cell death and vascular aging, we can gain a novel perspective on the pathogenesis of vascular aging and enhance the prognosis of atherosclerosis. This article aims to provide a comprehensive review of the impacts of copper homeostasis on vascular aging, including their effects on endothelial cells, smooth muscle cells, oxidative stress, ferroptosis, intestinal flora, and other related factors. Furthermore, we intend to discuss potential strategies involving cuproptosis and provide new insights for copper-related vascular aging.
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Affiliation(s)
- Zhuoying Chen
- Department of Geriatrics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430077, China
| | - Yuan-Yuan Li
- Department of Nursing, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430077, China.
| | - Xiangjie Liu
- Department of Geriatrics, Liyuan Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan 430077, China.
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Ross MO, Xie Y, Owyang RC, Ye C, Zbihley ONP, Lyu R, Wu T, Wang P, Karginova O, Olopade OI, Zhao M, He C. PTPN2 copper-sensing rapidly relays copper level fluctuations into EGFR/CREB activation and associated CTR1 transcriptional repression. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.08.29.555401. [PMID: 37693440 PMCID: PMC10491225 DOI: 10.1101/2023.08.29.555401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/12/2023]
Abstract
Fluxes in human intra- and extracellular copper levels recently garnered attention for roles in cellular signaling, including affecting levels of the signaling molecule cyclic adenosine monophosphate (cAMP). We herein applied an unbiased temporal evaluation of the whole-genome transcriptional activities modulated by fluctuations in copper levels to identify the copper sensor proteins responsible for driving these activities. We found that fluctuations in physiologically-relevant copper levels rapidly modulate EGFR/MAPK/ERK signal transduction and activation of the transcription factor cAMP response element-binding protein (CREB). Both intracellular and extracellular assays support Cu 1+ inhibition of the EGFR-phosphatase PTPN2 (and potentially the homologous PTPN1)-via direct ligation to the PTPN2 active site cysteine side chain-as the underlying mechanism of copper-stimulated EGFR signal transduction activation. Depletion of copper represses this signaling pathway. We additionally show i ) copper supplementation drives transcriptional repression of the copper importer CTR1 and ii ) CREB activity is inversely correlated with CTR1 expression. In summary, our study reveals PTPN2 as a physiological copper sensor and defines a regulatory mechanism linking feedback control of copper-stimulated MAPK/ERK/CREB-signaling and CTR1 expression, thereby uncovering a previously unrecognized link between copper levels and cellular signal transduction.
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4
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Tai P, Wang Z, Chen X, Chen A, Gong L, Cheng Y, Cao K. Multi-omics analysis of the oncogenic value of copper Metabolism-Related protein COMMD2 in human cancers. Cancer Med 2022. [PMID: 36205192 DOI: 10.1002/cam4.5320] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2022] [Revised: 08/31/2022] [Accepted: 09/20/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND The copper metabolism MURR1 domain (COMMD) protein family is involved in tumorigenicity of malignant tumors. However, as the member of COMMD, the role of COMMD2 in human tumors remains unknown. METHODS We used The Cancer Genome Atlas (TCGA), Genotype Tissue Expression (GTEx), Human Protein Atlas (HPA) database, Cancer Cell Line Encyclopedia (CCLE) platform, univariate Cox regression analysis, Kaplan-Meier curve, cBioPortal, UALCAN database, Sangerbox online platform, GSCA database gene set enrichment analysis (GSEA), and GeneMANIA to analyze the expression of COMMD2, its prognostic values, genomic alteration patterns, and the correlation with tumor stemness, tumor mutational burden (TMB), microsatellite instability (MSI), and immune infiltrates, drug sensitivity, and gene function enrichment in pan-cancer. qRT-PCR, CCK-8, EdU, wound healing, and transwell migration assays were performed to confirm the function of COMMD2. RESULTS COMMD2 was strongly expressed in most cancer types. Elevated COMMD2 expression affects the prognosis, clinicopathological stage, and molecular or immune subtypes of various tumors. Moreover, promoter hypomethylation and mutations in the COMMD2 gene may be associated with its high expression and poor survival. Additionally, we discovered that COMMD2 expression was linked to tumor stemness, TMB, MSI, immune cell infiltration, immune-checkpoint inhibitors, and drug sensitivity in pan-cancer. Furthermore, the COMMD2 gene co-expression network is constructed with GSEA analysis, displaying significant interaction of COMMD2 with E2F targets, G2-M checkpoint, and mitotic spindle in bladder cancer (BLCA). Finally, RNA interference data showed suppression of COMMD2 prevented proliferation and migration of BLCA and uterine corpus endometrial carcinoma (UCEC) cells. CONCLUSION Our findings shed light on the COMMD2 functions in human cancers and demonstrate that it is a promising prognostic biomarker and therapeutic target in pan-cancer.
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Affiliation(s)
- Panpan Tai
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha, China
| | - Zhanwang Wang
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha, China
| | - Xinyu Chen
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha, China
| | - Aiyan Chen
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha, China
| | - Lian Gong
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha, China
| | - Yaxin Cheng
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha, China
| | - Ke Cao
- Department of Oncology, Third Xiangya Hospital of Central South University, Changsha, China
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5
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Yang M, Wu X, Hu J, Wang Y, Wang Y, Zhang L, Huang W, Wang X, Li N, Liao L, Chen M, Xiao N, Dai Y, Liang H, Huang W, Yuan L, Pan H, Li L, Chen L, Liu L, Liang L, Guan J. COMMD10 inhibits HIF1α/CP loop to enhance ferroptosis and radiosensitivity by disrupting Cu-Fe balance in hepatocellular carcinoma. J Hepatol 2022; 76:1138-1150. [PMID: 35101526 DOI: 10.1016/j.jhep.2022.01.009] [Citation(s) in RCA: 86] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2020] [Revised: 12/20/2021] [Accepted: 01/05/2022] [Indexed: 01/18/2023]
Abstract
BACKGROUND & AIMS Copper (Cu) is an essential trace element whose serum levels have been reported to act as an effective indicator of the efficacy of radiotherapy. However, little is known about the role of Cu in radiotherapy. In this study we aimed to determine this role and investigate the precise mechanism by which Cu or Cu-related proteins regulate the radiosensitivity of hepatocellular carcinoma (HCC). METHODS The expression and function of Cu and copper metabolism MURR1 domain 10 (COMMD10) were assessed via a Cu detection assay, immunostaining, real-time PCR, western blot, a radiation clonogenic assay and a 5-ethynyl-2'-deoxyuridine assay. Ferroptosis was determined by detecting glutathione, lipid peroxidation, malondialdehyde and ferrous ion (Fe) levels. The in vivo effects of Cu and COMMD10 were examined with Cu/Cu chelator treatment or lentivirus modification of COMMD10 expression in radiated mouse models. RESULTS We identified a novel role of Cu in promoting the radioresistance of HCC cells. Ionizing radiation (IR) induced a reduction of COMMD10, which increased intracellular Cu and led to radioresistance of HCC. COMMD10 enhanced ferroptosis and radiosensitivity in vitro and in vivo. Mechanistically, low expression of COMMD10 induced by IR inhibited the ubiquitin degradation of HIF1α (by inducing Cu accumulation) and simultaneously impaired its combination with HIF1α, promoting HIF1α nuclear translocation and the transcription of ceruloplasmin (CP) and SLC7A11, which jointly inhibited ferroptosis in HCC cells. In addition, elevated CP promoted HIF1α expression by reducing Fe, forming a positive feedback loop. CONCLUSIONS COMMD10 inhibits the HIF1α/CP loop to enhance ferroptosis and radiosensitivity by disrupting Cu-Fe homeostasis in HCC. This work provides new targets and treatment strategies for overcoming radioresistance in HCC. LAY SUMMARY Radiotherapy benefits patients with unresectable or advanced hepatocellular carcinoma (HCC), but its effectiveness is hampered by radioresistance. Herein, we uncovered a novel role for copper in promoting the radioresistance of HCCs. This work has revealed new targets and potential treatment strategies that could be used to sensitize HCC to radiotherapy.
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Affiliation(s)
- Mi Yang
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xixi Wu
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Jinlong Hu
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangzhou, Guangdong, China; Department of Pathology, Sun Yat-sen University Cancer Center, Guangzhou, Guangdong, China; Sun Yat-sen University Cancer Center, State Key Laboratory of Oncology in South China, Collaborative Innovation Center for Cancer Medicine, Guangzhou, Guangdong, China
| | - Yingqiao Wang
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Yin Wang
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Longshan Zhang
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Weiqiang Huang
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Xiaoqing Wang
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Nan Li
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Liwei Liao
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Min Chen
- Department of Radiation Oncology, Peking University Shenzhen Hospital, Shenzhen, China
| | - Nanjie Xiao
- Department of Radiation Oncology, National Cancer Center/National Clinical Research Center for Cancer/Cancer Hospital & Shenzhen Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Shenzhen, China
| | - Yongmei Dai
- Department of Oncology, Provincial Clinical College of Fujian Medical University, Fujian Provincial Hospital, Fujian, China
| | - Huazhen Liang
- The First Tumor Department, Maoming People's Hospital, Maoming, China
| | - Wenqi Huang
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Lu Yuan
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Hua Pan
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Lu Li
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Longhua Chen
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China
| | - Laiyu Liu
- Chronic Airways Diseases Laboratory, Department of Respiratory and Critical Care Medicine, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
| | - Li Liang
- Department of Pathology, Nanfang Hospital and Basic Medical College, Southern Medical University, Guangzhou, Guangdong, China; Guangdong Province Key Laboratory of Molecular Tumor Pathology, Guangzhou, Guangdong, China.
| | - Jian Guan
- Department of Radiation Oncology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong, China.
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6
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Díez-Tercero L, Delgado LM, Perez RA. Modulation of Macrophage Response by Copper and Magnesium Ions in Combination with Low Concentrations of Dexamethasone. Biomedicines 2022; 10:biomedicines10040764. [PMID: 35453514 PMCID: PMC9030383 DOI: 10.3390/biomedicines10040764] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/09/2022] [Accepted: 03/22/2022] [Indexed: 12/16/2022] Open
Abstract
Macrophages have been deemed crucial for correct tissue regeneration, which is a complex process with multiple overlapping phases, including inflammation. Previous studies have suggested that divalent ions are promising cues that can induce an anti-inflammatory response, since they are stable cues that can be released from biomaterials. However, their immunomodulatory potential is limited in a pro-inflammatory environment. Therefore, we investigated whether copper and magnesium ions combined with low concentrations of the anti-inflammatory drug, dexamethasone (dex), could have a synergistic effect in macrophage, with or without pro-inflammatory stimulus, in terms of morphology, metabolic activity and gene expression. Our results showed that the combination of copper and dex strongly decreased the expression of pro-inflammatory markers, while the combination with magnesium upregulated the expression of IL-10. Moreover, in the presence of a pro-inflammatory stimulus, the combination of copper and dex induced a strong TNF-α response, suggesting an impairment of the anti-inflammatory actions of dex. The combination of magnesium and dex in the presence of a pro-inflammatory stimulus did not promote any improvement in comparison to dex alone. The results obtained in this study could be relevant for tissue engineering applications and in the design of platforms with a dual release of divalent ions and small molecules.
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Affiliation(s)
- Leire Díez-Tercero
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Sant Cugat del Vallès, 08195 Barcelona, Spain;
- Basic Science Department, Universitat Internacional de Catalunya, Sant Cugat del Vallès, 08195 Barcelona, Spain
| | - Luis M. Delgado
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Sant Cugat del Vallès, 08195 Barcelona, Spain;
- Basic Science Department, Universitat Internacional de Catalunya, Sant Cugat del Vallès, 08195 Barcelona, Spain
- Correspondence: (L.M.D.); (R.A.P.); Tel.: +34-935042000 (L.M.D. & R.A.P.)
| | - Roman A. Perez
- Bioengineering Institute of Technology, Universitat Internacional de Catalunya, Sant Cugat del Vallès, 08195 Barcelona, Spain;
- Basic Science Department, Universitat Internacional de Catalunya, Sant Cugat del Vallès, 08195 Barcelona, Spain
- Correspondence: (L.M.D.); (R.A.P.); Tel.: +34-935042000 (L.M.D. & R.A.P.)
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7
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Voli F, Valli E, Lerra L, Kimpton K, Saletta F, Giorgi FM, Mercatelli D, Rouaen JRC, Shen S, Murray JE, Ahmed-Cox A, Cirillo G, Mayoh C, Beavis PA, Haber M, Trapani JA, Kavallaris M, Vittorio O. Intratumoral Copper Modulates PD-L1 Expression and Influences Tumor Immune Evasion. Cancer Res 2020; 80:4129-4144. [PMID: 32816860 DOI: 10.1158/0008-5472.can-20-0471] [Citation(s) in RCA: 146] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2020] [Revised: 06/19/2020] [Accepted: 08/03/2020] [Indexed: 11/16/2022]
Abstract
Therapeutic checkpoint antibodies blocking programmed death receptor 1/programmed death ligand 1 (PD-L1) signaling have radically improved clinical outcomes in cancer. However, the regulation of PD-L1 expression on tumor cells is still poorly understood. Here we show that intratumoral copper levels influence PD-L1 expression in cancer cells. Deep analysis of the The Cancer Genome Atlas database and tissue microarrays showed strong correlation between the major copper influx transporter copper transporter 1 (CTR-1) and PD-L1 expression across many cancers but not in corresponding normal tissues. Copper supplementation enhanced PD-L1 expression at mRNA and protein levels in cancer cells and RNA sequencing revealed that copper regulates key signaling pathways mediating PD-L1-driven cancer immune evasion. Conversely, copper chelators inhibited phosphorylation of STAT3 and EGFR and promoted ubiquitin-mediated degradation of PD-L1. Copper-chelating drugs also significantly increased the number of tumor-infiltrating CD8+ T and natural killer cells, slowed tumor growth, and improved mouse survival. Overall, this study reveals an important role for copper in regulating PD-L1 and suggests that anticancer immunotherapy might be enhanced by pharmacologically reducing intratumor copper levels. SIGNIFICANCE: These findings characterize the role of copper in modulating PD-L1 expression and contributing to cancer immune evasion, highlighting the potential for repurposing copper chelators as enhancers of antitumor immunity. GRAPHICAL ABSTRACT: http://cancerres.aacrjournals.org/content/canres/80/19/4129/F1.large.jpg.
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Affiliation(s)
- Florida Voli
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia.,School of Women's and Children's Health, UNSW Sydney, Sydney, Australia
| | - Emanuele Valli
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia.,School of Women's and Children's Health, UNSW Sydney, Sydney, Australia
| | - Luigi Lerra
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia
| | - Kathleen Kimpton
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, UNSW Sydney, New South Wales, Sydney, Australia
| | - Federica Saletta
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia.,Children's Cancer Research Unit, Kids Research Institute, The Children's Hospital at Westmead, Westmead, New South Wales, Australia
| | - Federico M Giorgi
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Daniele Mercatelli
- Department of Pharmacy and Biotechnology, University of Bologna, Bologna, Italy
| | - Jourdin R C Rouaen
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia
| | - Sylvie Shen
- Cord & Marrow Transplant Facility, Kids Cancer Centre, Sydney Children's Hospital, Sydney, Australia
| | - Jayne E Murray
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia
| | - Aria Ahmed-Cox
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia.,School of Women's and Children's Health, UNSW Sydney, Sydney, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, UNSW Sydney, New South Wales, Sydney, Australia
| | - Giuseppe Cirillo
- Department of Pharmacy, Health and Nutritional Sciences, University of Calabria, Rende, Italy
| | - Chelsea Mayoh
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia.,School of Women's and Children's Health, UNSW Sydney, Sydney, Australia
| | - Paul A Beavis
- Rosie Lew Cancer Immunology Program, Peter MacCallum Cancer Centre, Melbourne, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Australia
| | - Michelle Haber
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia
| | - Joseph A Trapani
- Rosie Lew Cancer Immunology Program, Peter MacCallum Cancer Centre, Melbourne, Australia.,Sir Peter MacCallum Department of Oncology, The University of Melbourne, Parkville, Australia
| | - Maria Kavallaris
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia. .,School of Women's and Children's Health, UNSW Sydney, Sydney, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, UNSW Sydney, New South Wales, Sydney, Australia
| | - Orazio Vittorio
- Children's Cancer Institute, Lowy Cancer Research Centre, UNSW Sydney, Randwick, New South Wales, Australia. .,School of Women's and Children's Health, UNSW Sydney, Sydney, Australia.,ARC Centre of Excellence in Convergent Bio-Nano Science and Technology, Australian Centre for NanoMedicine, UNSW Sydney, New South Wales, Sydney, Australia
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8
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Copper Homeostasis in Mammals, with Emphasis on Secretion and Excretion. A Review. Int J Mol Sci 2020; 21:ijms21144932. [PMID: 32668621 PMCID: PMC7403968 DOI: 10.3390/ijms21144932] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/05/2020] [Accepted: 07/07/2020] [Indexed: 01/17/2023] Open
Abstract
One of the hallmarks of Cu metabolism in mammals is that tissue and fluid levels are normally maintained within a very narrow range of concentrations. This results from the ability of the organism to respond to variations in intake from food and drink by balancing excretion, which occurs mainly via the bile and feces. Although this sounds straightforward and we have already learned a great deal about aspects of this process, the balance between overall intake and excretion occurs over a high background of Cu recycling, which has generally been ignored. In fact, most of the Cu absorbed from the GI tract actually comes from digestive fluids and is constantly “re-used”. A great deal more recycling of Cu probably occurs in the interior, between cells of individual tissues and the fluid of the blood and interstitium. This review presents what is known that is pertinent to understanding these complexities of mammalian Cu homeostasis and indicates where further studies are needed.
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9
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Kennedy E, Everson TM, Punshon T, Jackson BP, Hao K, Lambertini L, Chen J, Karagas MR, Marsit CJ. Copper associates with differential methylation in placentae from two US birth cohorts. Epigenetics 2020; 15:215-230. [PMID: 31462129 PMCID: PMC7028322 DOI: 10.1080/15592294.2019.1661211] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Revised: 08/19/2019] [Accepted: 08/23/2019] [Indexed: 12/11/2022] Open
Abstract
Copper is an essential trace nutrient and an enzymatic cofactor necessary for diverse physiological and biological processes. Copper metabolism is uniquely controlled in the placenta and changes to copper metabolism have been linked with adverse birth outcomes. We investigated associations between patterns of DNA methylation (DNAm; measured at >485 k CpG sites) and copper concentration measured from placentae in two independent mother-infant cohorts: the New Hampshire Birth Cohort Study (NHBCS, n = 306) and the Rhode Island Child Health Study (RICHS, n = 141). We identified nine copper-associated differentially methylated regions (DMRs; adjusted P < 0.05) and 15 suggestive CpGs (raw P < 1e-5). One of the most robust variably methylated CpGs associated with the expression of the antioxidant, GSTP1. Our most robust DMR negatively associates with the expression of the zinc-finger gene, ZNF197 (FDR = 4.5e-11). Genes co-expressed with ZNF197, a transcription factor, are enriched for genes that associate with birth weight in RICHS (OR = 2.9, P = 2.6e-6, N = 194), genes that are near a ZNF197 consensus binding motif (OR = 1.34, P = 0.01, N = 194), and for those classified in GO biological processes growth hormone secretion (P = 3.4e-4), multicellular organism growth (P = 3.8e-4), and molecular functions related to lipid biosynthesis (P = 1.9e-4). Further, putative transcriptional targets for ZNF197 include genes involved in copper metabolism and placentation. Our results suggest that copper metabolism is tied to DNAm in the placenta and that copper-associated patterns in DNAm may mediate normal placentation and foetal development.
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Affiliation(s)
- Elizabeth Kennedy
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Todd M. Everson
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
| | - Tracy Punshon
- Department of Biological Sciences, Dartmouth College, Hanover, NH, USA
| | - Brian P. Jackson
- Department of Earth Sciences, Dartmouth College, Hanover, NH, USA
| | - Ke Hao
- Department of Genetics and Genome Sciences, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Luca Lambertini
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Jia Chen
- Department of Environmental Medicine and Public Health, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Margaret R. Karagas
- Department of Epidemiology, Geisel School of Medicine, Dartmouth College, Lebanon, NH, USA
- Children’s Environmental Health and Disease Prevention Research Center at Dartmouth, Dartmouth College, Lebanon, NH, USA
| | - Carmen J. Marsit
- Department of Environmental Health, Rollins School of Public Health, Emory University, Atlanta, GA, USA
- Children’s Environmental Health and Disease Prevention Research Center at Dartmouth, Dartmouth College, Lebanon, NH, USA
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10
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High Sensitivity Detection of Copper Ions in Oysters Based on the Fluorescence Property of Cadmium Selenide Quantum Dots. CHEMOSENSORS 2019. [DOI: 10.3390/chemosensors7040047] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Cadmium selenide (CdSe) quantum dots (QDs) were synthesized by water phase synthesis method using 3-mercaptopropionic acid (3-MPA) as a stabilizer, and they were applied to the detection of copper ions (Cu2+). The results showed that CdSe QDs have excellent selectivity and sensitivity toward Cu2+. The fluorescence intensity of CdSe QDs decreased with the increase of Cu2+ concentration. The linear range was from 30 nM to 3 μM, and the detection limit was 30 nM. Furthermore, CdSe QDs were used for detecting the concentration of Cu2+ in oysters. The content of Cu2+ was 40.91 mg/kg, which was close to the one measured via flame atomic absorption spectrometry (FAAS), and the relative error was 1.81%. Therefore, CdSe QDs have a wide application prospect in the rapid detection of copper ions in food.
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11
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Latorre M, Burkhead JL, Hodar C, Arredondo M, González M, Araya M. Chronic copper treatment prevents the liver critical balance transcription response induced by acetaminophen. J Trace Elem Med Biol 2019; 53:113-119. [PMID: 30910193 DOI: 10.1016/j.jtemb.2019.02.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/31/2018] [Revised: 01/31/2019] [Accepted: 02/17/2019] [Indexed: 02/01/2023]
Abstract
The independent toxic effects of copper and acetaminophen are among the most studied topics in liver toxicity. Here, in an animal model of Cebus capucinus chronically exposed to high dietary copper, we assessed clinical and global transcriptional adaptations of the liver induced by a single high dose of acetaminophen. The experiment conditions were chosen to resemble a close to human real-life situation of exposure to both toxic stimuli. The clinical parameters and histological analyses indicated that chronic copper administration does not induce liver damage and may have a protective effect in acetaminophen challenge. Acetaminophen administration in previously non-exposed animals induced down-regulation of a complex network of gene regulators, highlighting the putative participation of the families of gene regulators HNF, FOX, PPAR and NRF controlling this process. This gene response was not observed in animals that previously received chronic oral copper, suggesting that this metal induces a transcriptional adaptation that may protect against acetaminophen toxicity, a classical adaptation response termed preconditioning of the liver.
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Affiliation(s)
- Mauricio Latorre
- Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, El Líbano 5524, Macul, Santiago, Chile; Center for Genome Regulation (Fondap 15090007), Universidad de Chile, Blanco Encalada 2085, Santiago, Chile; Mathomics, Center for Mathematical Modeling, Universidad de Chile, Beauchef 851, 7th Floor, Santiago, Chile; Instituto de Ciencias de la Ingeniería, Universidad de O'Higgins, Av. Viel 1497, Rancagua, Chile.
| | - Jason L Burkhead
- Department of Biological Sciences Anchorage, University of Alaska Anchorage, Anchorage, Alaska, United States
| | - Christian Hodar
- Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, El Líbano 5524, Macul, Santiago, Chile; Center for Genome Regulation (Fondap 15090007), Universidad de Chile, Blanco Encalada 2085, Santiago, Chile
| | - Miguel Arredondo
- Micronutrients Laboratory, INTA, Universidad de Chile, El Líbano 5524, Macul, Santiago, Chile
| | - Mauricio González
- Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, El Líbano 5524, Macul, Santiago, Chile; Center for Genome Regulation (Fondap 15090007), Universidad de Chile, Blanco Encalada 2085, Santiago, Chile
| | - Magdalena Araya
- Gastroenterología y Nutrición, INTA, Universidad de Chile, El Líbano 5524, Macul, Santiago, Chile.
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12
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Polishchuk EV, Merolla A, Lichtmannegger J, Romano A, Indrieri A, Ilyechova EY, Concilli M, De Cegli R, Crispino R, Mariniello M, Petruzzelli R, Ranucci G, Iorio R, Pietrocola F, Einer C, Borchard S, Zibert A, Schmidt HH, Di Schiavi E, Puchkova LV, Franco B, Kroemer G, Zischka H, Polishchuk RS. Activation of Autophagy, Observed in Liver Tissues From Patients With Wilson Disease and From ATP7B-Deficient Animals, Protects Hepatocytes From Copper-Induced Apoptosis. Gastroenterology 2019; 156:1173-1189.e5. [PMID: 30452922 DOI: 10.1053/j.gastro.2018.11.032] [Citation(s) in RCA: 132] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/14/2018] [Revised: 10/23/2018] [Accepted: 11/10/2018] [Indexed: 12/22/2022]
Abstract
BACKGROUND & AIMS Wilson disease (WD) is an inherited disorder of copper metabolism that leads to copper accumulation and toxicity in the liver and brain. It is caused by mutations in the adenosine triphosphatase copper transporting β gene (ATP7B), which encodes a protein that transports copper from hepatocytes into the bile. We studied ATP7B-deficient cells and animals to identify strategies to decrease copper toxicity in patients with WD. METHODS We used RNA-seq to compare gene expression patterns between wild-type and ATP7B-knockout HepG2 cells exposed to copper. We collected blood and liver tissues from Atp7b-/- and Atp7b+/- (control) rats (LPP) and mice; some mice were given 5 daily injections of an autophagy inhibitor (spautin-1) or vehicle. We obtained liver biopsies from 2 patients with WD in Italy and liver tissues from patients without WD (control). Liver tissues were analyzed by immunohistochemistry, immunofluorescence, cell viability, apoptosis assays, and electron and confocal microscopy. Proteins were knocked down in cell lines using small interfering RNAs. Levels of copper were measured in cell lysates, blood samples, liver homogenates, and subcellular fractions by spectroscopy. RESULTS After exposure to copper, ATP7B-knockout cells had significant increases in the expression of 103 genes that regulate autophagy (including MAP1LC3A, known as LC3) compared with wild-type cells. Electron and confocal microscopy visualized more autophagic structures in the cytoplasm of ATP7B-knockout cells than wild-type cells after copper exposure. Hepatocytes in liver tissues from patients with WD and from Atp7b-/- mice and rats (but not controls) had multiple autophagosomes. In ATP7B-knockout cells, mammalian target of rapamycin (mTOR) had decreased activity and was dissociated from lysosomes; this resulted in translocation of the mTOR substrate transcription factor EB to the nucleus and activation of autophagy-related genes. In wild-type HepG2 cells (but not ATP7B-knockout cells), exposure to copper and amino acids induced recruitment of mTOR to lysosomes. Pharmacologic inhibitors of autophagy or knockdown of autophagy proteins ATG7 and ATG13 induced and accelerated the death of ATP7B-knockout HepG2 cells compared with wild-type cells. Autophagy protected ATP7B-knockout cells from copper-induced death. CONCLUSION ATP7B-deficient hepatocytes, such as in those in patients with WD, activate autophagy in response to copper overload to prevent copper-induced apoptosis. Agents designed to activate this autophagic pathway might decrease copper toxicity in patients with WD.
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Affiliation(s)
- Elena V Polishchuk
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy; ITMO University, St. Petersburg, Russia; Institute of Biosciences and Bioresources CNR, Italy
| | - Assunta Merolla
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy
| | - Josef Lichtmannegger
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Alessia Romano
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy
| | - Alessia Indrieri
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy; Department of Translational Medical Science, "Federico II" University of Naples, Naples, Italy
| | - Ekaterina Y Ilyechova
- ITMO University, St. Petersburg, Russia; Department of Molecular Genetics, Institute of Experimental Medicine, St. Petersburg, Russia
| | - Mafalda Concilli
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy
| | - Rossella De Cegli
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy
| | - Roberta Crispino
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy
| | - Marta Mariniello
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy
| | | | - Giusy Ranucci
- Division of Metabolism, IRCCS Bambino Gesù Children's Hospital, Rome, Italy
| | - Raffaele Iorio
- Department of Translational Medical Science, "Federico II" University of Naples, Naples, Italy
| | - Federico Pietrocola
- Equipe 11 labellisée Ligue Nationale Contre le Cancer, Centre de Recherche des Cordeliers, Paris, France; Institut National de la Santé et de la Recherche Médicale, UMR1138, Equipe labellisée Ligue Nationale Contre le Cancer, Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France; Université Pierre et Marie Curie, Paris, France; Cell Biology and Metabolomics Platforms, Gustave Roussy Cancer Campus, Villejuif, France
| | - Claudia Einer
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Sabine Borchard
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Andree Zibert
- Klinik für Transplantationsmedizin, Universitätsklinikum Münster, Münster, Germany
| | - Hartmut H Schmidt
- Klinik für Transplantationsmedizin, Universitätsklinikum Münster, Münster, Germany
| | | | | | - Brunella Franco
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy; Department of Translational Medical Science, "Federico II" University of Naples, Naples, Italy
| | - Guido Kroemer
- Equipe 11 labellisée Ligue Nationale Contre le Cancer, Centre de Recherche des Cordeliers, Paris, France; Institut National de la Santé et de la Recherche Médicale, UMR1138, Equipe labellisée Ligue Nationale Contre le Cancer, Paris, France; Université Paris Descartes, Sorbonne Paris Cité, Paris, France; Université Pierre et Marie Curie, Paris, France; Cell Biology and Metabolomics Platforms, Gustave Roussy Cancer Campus, Villejuif, France; Pôle de Biologie, Hôpital Européen Georges Pompidou, AP-HP, Paris, France; Department of Women's and Children's Health, Karolinska University Hospital, Stockholm, Sweden
| | - Hans Zischka
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Center Munich, German Research Center for Environmental Health, Neuherberg, Germany; Institute of Toxicology and Environmental Hygiene, Technical University Munich, Munich, Germany
| | - Roman S Polishchuk
- Telethon Institute of Genetics and Medicine (TIGEM), Pozzuoli, Naples, Italy.
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Chalana A, Karri R, Das R, Kumar B, Rai RK, Saxena H, Gupta A, Banerjee M, Jha KK, Roy G. Copper-Driven Deselenization: A Strategy for Selective Conversion of Copper Ion to Nanozyme and Its Implication for Copper-Related Disorders. ACS APPLIED MATERIALS & INTERFACES 2019; 11:4766-4776. [PMID: 30644707 DOI: 10.1021/acsami.8b16786] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Synthetic organic molecules, which can selectively convert excess intracellular copper (Cu) ions to nanozymes with an ability to protect cells from oxidative stress, are highly significant in developing therapeutic agents against Cu-related disorder like Wilson's disease. Here, we report 1,3-bis(2-hydroxyethyl)-1 H-benzoimidazole-2-selenone (1), which shows a remarkable ability to remove Cu ion from glutathione, a major cytosolic Cu-binding ligand, and thereafter converts it into copper selenide (CuSe) nanozyme that exhibits remarkable glutathione peroxidase-like activity, at cellular level of H2O2 concentration, with excellent cytoprotective effect against oxidative stress in hepatocyte. Cu-driven deselenization of 1, under physiologically relevant conditions, occurred in two steps. The activation of C═Se bond by metal ion is the crucial first step, followed by cleavage of the metal-activated C═Se bond, initiated by the OH group of N-(CH2)2OH substituent through neighboring group participation (deselenization step), resulted in the controlled synthesis of various types of Cu2-xSe nanocrystals (NCs) (nanodisks, nanocubes, and nanosheets) and tetragonal Cu3Se2 NCs, depending upon the oxidation state of the Cu ion used to activate the C═Se bond. Deselenization of 1 is highly metal-selective. Except Cu, other essential metal ions, including Mn2+, Fe2+, Co2+, Ni2+, or Zn2+, failed to produce metal selenide under identical reaction conditions. Moreover, no significant change in the expression level of Cu-metabolism-related genes, including metallothioneines MT1A, is observed in liver cells co-treated with Cu and 1, as opposed to the large increase in the concentrations of these genes observed in cells treated with Cu alone, suggesting the participation of 1 in Cu homeostasis in hepatocyte.
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14
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Zang X, Huang H, Zhuang Z, Chen R, Xie Z, Xu C, Mo X. The association between serum copper concentrations and cardiovascular disease risk factors in children and adolescents in NHANES. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2018; 25:16951-16958. [PMID: 29623647 DOI: 10.1007/s11356-018-1816-6] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/09/2017] [Accepted: 03/19/2018] [Indexed: 06/08/2023]
Abstract
Copper is an essential element in human beings, alterations in serum copper levels could potentially have effect on human health. To date, no data are available regarding how serum copper affects cardiovascular disease (CVD) risk factors in children and adolescents. We examined the association between serum copper levels and CVD risk factors in children and adolescents. We analyzed data consisting of 1427 subjects from a nationally representative sample of the US population in the National Health and Nutrition Examination Survey (NHANES) from 2011 to 2014. The CVD risk factors included total cholesterol, HDL-cholesterol, LDL-cholesterol, triglycerides, fasting glucose, glycohemoglobin, fasting insulin, and blood pressure. Multivariate and generalized linear regressions were performed to investigate associations adjusted for age, gender, ethnicity, poverty:income ratio (PIR), BMI, energy intake, and physical activity. We found significant associations between serum copper and total cholesterol (coefficient = 0.132; 95% CI 0.081, 0.182; P for trend < 0.001), glycohemoglobin (coefficient = 0.044; 95% CI 0.020, 0.069; P < 0.001), and fasting insulin (coefficient = 0.730; 95% CI 0.410, 1.050; P < 0.001) among the included participants. Moreover, in the generalized linear models, subjects with the highest copper levels demonstrated a 0.83% (95% CI 0.44%, 1.24%) greater increase in serum total cholesterol (p for trend < 0.001) when compared to participants with the lowest copper concentrations. Our results provide the first epidemiological evidence that serum copper concentrations are associated with total cholesterol concentrations in children and adolescents. However, the underlying mechanisms still need further exploration.
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Affiliation(s)
- Xiaodong Zang
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, China
| | - Hesuyuan Huang
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, China
| | - Zhulun Zhuang
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, China
| | - Runsen Chen
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, China
| | - Zongyun Xie
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, China
| | - Cheng Xu
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, China
| | - Xuming Mo
- Department of Cardiothoracic Surgery, Children's Hospital of Nanjing Medical University, 72 Guangzhou Road, Nanjing, 210008, China.
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15
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Riera‐Romo M. COMMD1: A Multifunctional Regulatory Protein. J Cell Biochem 2017; 119:34-51. [DOI: 10.1002/jcb.26151] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 05/19/2017] [Indexed: 12/14/2022]
Affiliation(s)
- Mario Riera‐Romo
- Department of PharmacologyInstitute of Marine SciencesHavanaCuba
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16
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Chevallet M, Veronesi G, Fuchs A, Mintz E, Michaud-Soret I, Deniaud A. Impact of labile metal nanoparticles on cellular homeostasis. Current developments in imaging, synthesis and applications. Biochim Biophys Acta Gen Subj 2017; 1861:1566-1577. [DOI: 10.1016/j.bbagen.2016.12.012] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2016] [Revised: 12/11/2016] [Accepted: 12/15/2016] [Indexed: 12/26/2022]
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17
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Dirksen K, Spee B, Penning LC, van den Ingh TSGAM, Burgener IA, Watson AL, Groot Koerkamp M, Rothuizen J, van Steenbeek FG, Fieten H. Gene expression patterns in the progression of canine copper-associated chronic hepatitis. PLoS One 2017; 12:e0176826. [PMID: 28459846 PMCID: PMC5411060 DOI: 10.1371/journal.pone.0176826] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2016] [Accepted: 04/18/2017] [Indexed: 12/26/2022] Open
Abstract
Copper is an essential trace element, but can become toxic when present in abundance. The severe effects of copper-metabolism imbalance are illustrated by the inherited disorders Wilson disease and Menkes disease. The Labrador retriever dog breed is a novel non-rodent model for copper-storage disorders carrying mutations in genes known to be involved in copper transport. Besides disease initiation and progression of copper accumulation, the molecular mechanisms and pathways involved in progression towards copper-associated chronic hepatitis still remain unclear. Using expression levels of targeted candidate genes as well as transcriptome micro-arrays in liver tissue of Labrador retrievers in different stages of copper-associated hepatitis, pathways involved in progression of the disease were studied. At the initial phase of increased hepatic copper levels, transcriptomic alterations in livers mainly revealed enrichment for cell adhesion, developmental, inflammatory, and cytoskeleton pathways. Upregulation of targeted MT1A and COMMD1 mRNA shows the liver's first response to rising intrahepatic copper concentrations. In livers with copper-associated hepatitis mainly an activation of inflammatory pathways is detected. Once the hepatitis is in the chronic stage, transcriptional differences are found in cell adhesion adaptations and cytoskeleton remodelling. In view of the high similarities in copper-associated hepatopathies between men and dog extrapolation of these dog data into human biomedicine seems feasible.
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Affiliation(s)
- Karen Dirksen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Bart Spee
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Louis C. Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | | | - Iwan A. Burgener
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
- Department für Kleintiere und Pferde, Veterinärmedizinische Universität Wien, Vienna, Austria
| | | | | | - Jan Rothuizen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Frank G. van Steenbeek
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
| | - Hille Fieten
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands
- * E-mail:
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18
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Chevallet M, Gallet B, Fuchs A, Jouneau PH, Um K, Mintz E, Michaud-Soret I. Metal homeostasis disruption and mitochondrial dysfunction in hepatocytes exposed to sub-toxic doses of zinc oxide nanoparticles. NANOSCALE 2016; 8:18495-18506. [PMID: 27782264 DOI: 10.1039/c6nr05306h] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Increased production and use of zinc oxide nanoparticles (ZnO-NPs) in consumer products has prompted the scientific community to investigate their potential toxicity, and understand their impact on the environment and organisms. Molecular mechanisms involved in ZnO-NP toxicity are still under debate and focus essentially on high dose expositions. In our study, we chose to evaluate the effect of sub-toxic doses of ZnO-NPs on human hepatocytes (HepG2) with a focus on metal homeostasis and redox balance disruptions. We showed massive dissolution of ZnO-NPs outside the cell, transport and accumulation of zinc ions inside the cell but no evidence of nanoparticle entry, even when analysed by high resolution TEM microscopy coupled with EDX. Gene expression analysis highlighted zinc homeostasis disruptions as shown by metallothionein 1X and zinc transporter 1 and 2 (ZnT1, ZnT2) over-expression. Major oxidative stress response genes, such as superoxide dismutase 1, 2 and catalase were not induced. Phase 2 enzymes in term of antioxidant response, such as heme oxygenase 1 (HMOX1) and the regulating subunit of the glutamate-cysteine ligase (GCLM) were slightly upregulated, but these observations may be linked solely to metal homeostasis disruptions, as these actors are involved in both metal and ROS responses. Finally, we observed abnormal mitochondria morphologies and autophagy vesicles in response to ZnO-NPs, indicating a potential role of mitochondria in storing and protecting cells from zinc excess but ultimately causing cell death at higher doses.
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Affiliation(s)
- M Chevallet
- CNRS, Laboratoire de Chimie et Biologie des Métaux (LCBM), UMR 5249, Grenoble, France. and CEA, BIG, LCBM, Grenoble, France. and Université Grenoble Alpes, LCBM, Grenoble, France
| | - B Gallet
- Université Grenoble Alpes, IBS, Grenoble, France and CNRS, IBS, Grenoble, France and CEA, IBS, Grenoble, France
| | - A Fuchs
- CEA, BIG, DIR, Grenoble, France
| | - P H Jouneau
- CEA, INAC, Minatec campus, Grenoble, France and Université Grenoble Alpes, INAC-MEM-LEMMA, Grenoble, France
| | - K Um
- CNRS, Laboratoire de Chimie et Biologie des Métaux (LCBM), UMR 5249, Grenoble, France. and CEA, BIG, LCBM, Grenoble, France. and Université Grenoble Alpes, LCBM, Grenoble, France
| | - E Mintz
- CNRS, Laboratoire de Chimie et Biologie des Métaux (LCBM), UMR 5249, Grenoble, France. and CEA, BIG, LCBM, Grenoble, France. and Université Grenoble Alpes, LCBM, Grenoble, France
| | - I Michaud-Soret
- CNRS, Laboratoire de Chimie et Biologie des Métaux (LCBM), UMR 5249, Grenoble, France. and CEA, BIG, LCBM, Grenoble, France. and Université Grenoble Alpes, LCBM, Grenoble, France
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19
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Modulation of hepatic copper-ATPase activity by insulin and glucagon involves protein kinase A (PKA) signaling pathway. Biochim Biophys Acta Mol Basis Dis 2016; 1862:2086-2097. [DOI: 10.1016/j.bbadis.2016.08.008] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 07/25/2016] [Accepted: 08/09/2016] [Indexed: 11/23/2022]
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20
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Dirksen K, Roelen YS, van Wolferen ME, Kruitwagen HS, Penning LC, Burgener IA, Spee B, Fieten H. Erythrocyte copper chaperone for superoxide dismutase and superoxide dismutase as biomarkers for hepatic copper concentrations in Labrador retrievers. Vet J 2016; 218:1-6. [PMID: 27938702 DOI: 10.1016/j.tvjl.2016.10.007] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2016] [Revised: 09/26/2016] [Accepted: 10/22/2016] [Indexed: 11/19/2022]
Abstract
Hereditary hepatic copper accumulation in Labrador retrievers leads to hepatitis with fibrosis and eventually cirrhosis. The development of a non-invasive blood-based biomarker for copper status in dogs could be helpful in identifying dogs at risk and to monitor copper concentrations during treatment. In this study, two cellular copper metabolism proteins, Cu/Zn superoxide dismutase (SOD1) and its chaperone (copper chaperone for SOD1, CCS) were measured in erythrocytes and tested for association with hepatic copper concentrations in 15 Labrador retrievers with normal or increased hepatic copper concentrations. Antibodies against CCS and SOD1 were applicable for use in canine specimens. This was demonstrated by the loss of immune-reactive bands for CCS and SOD1 in siRNA treated canine bile duct epithelial cells. Erythrocyte CCS and CCS/SOD1 ratios were decreased 2.37 (P <0.001) and 3.29 (P <0.001) fold in the high copper group compared to the normal copper group. Erythrocyte CCS and CCS/SOD1 ratio are potential new biomarkers for hepatic copper concentrations in Labrador retrievers and could facilitate early diagnosis and treatment monitoring for copper-associated hepatitis in dogs.
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Affiliation(s)
- K Dirksen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, Utrecht 3584 CM, Netherlands
| | - Y S Roelen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, Utrecht 3584 CM, Netherlands
| | - M E van Wolferen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, Utrecht 3584 CM, Netherlands
| | - H S Kruitwagen
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, Utrecht 3584 CM, Netherlands
| | - L C Penning
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, Utrecht 3584 CM, Netherlands
| | - I A Burgener
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, Utrecht 3584 CM, Netherlands
| | - B Spee
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, Utrecht 3584 CM, Netherlands
| | - H Fieten
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, Utrecht 3584 CM, Netherlands.
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21
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Ostrakhovitch EA, Song YP, Cherian MG. Basal and copper-induced expression of metallothionein isoform 1,2 and 3 genes in epithelial cancer cells: The role of tumor suppressor p53. J Trace Elem Med Biol 2016; 35:18-29. [PMID: 27049123 DOI: 10.1016/j.jtemb.2016.01.008] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/29/2015] [Revised: 01/14/2016] [Accepted: 01/14/2016] [Indexed: 12/13/2022]
Abstract
Metallothioneins (MTs) are a ubiquitous low-molecular weight, cysteine rich proteins with a high affinity for metal ions. The expression and induction of MTs have been associated with protection against DNA damage, oxidative stress, and apoptosis. Our past research had shown that p53 is an important factor in metal regulation of MTs. The present study was undertaken to explore further the interrelationship between p53 and MTs. We investigated whether silencing of p53 could affect expression pattern of basal and copper induced metallothioneins. The silencing of wild-type p53 (wt-p53) in epithelial breast cancer MCF7 cells affected the basal level of MT-2A RNA, whereas the levels of MT-1A and MT-1X RNA remained largely unchanged. The expression of MT-3 was undetectable in MCF7 with either functional or silenced p53. MCF7 cells with silenced wt-p53 failed to upregulate MT-2A in response to copper and showed a reduced sensitivity toward copper induced cell apoptotic death. Similarly in MCF7-E6 and MDA-MB-231 cells, the presence of inactive/mutated p53 halted MT-1A and MT-2A gene expression in response to copper. Constitutive expression of MT-3 RNA was detectable in the presence of mutated p53 (mtp53). Transient transfection of MDA-MB-231 cells with wt-p53 enabled copper induced upregulation of both MT-1A and MT-2A but not basal level of MT-2A, MT-1E, MT-1X and MT-3. Inactivation of p53 in HepG2 cells amplified the basal expression of studied MT isoforms, including MT-3, as well as copper-induced mRNA expression of MTs except MT-1H and MT-3. Presented data demonstrate a direct relation between p53 and MT-1A and MT-2A and they also indicate that wt-p53 might be a negative regulator of MT-3 in epithelial cancer cells.
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Affiliation(s)
- E A Ostrakhovitch
- Department of Pathology, University of Western Ontario, Canada; Department of Chemistry, University of Western Ontario, Canada.
| | - Y P Song
- Department of Pathology, University of Western Ontario, Canada; Department of Chemistry, University of Western Ontario, Canada
| | - M G Cherian
- Department of Pathology, University of Western Ontario, Canada; Department of Chemistry, University of Western Ontario, Canada
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Electric Pulse Stimulation of Myotubes as an In Vitro Exercise Model: Cell-Mediated and Non-Cell-Mediated Effects. Sci Rep 2015; 5:10944. [PMID: 26091097 PMCID: PMC4473537 DOI: 10.1038/srep10944] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2015] [Accepted: 04/27/2015] [Indexed: 01/05/2023] Open
Abstract
Regular exercise has emerged as one of the best therapeutic strategies to prevent and treat type-2-diabetes. Exercise-induced changes in the muscle secretome, consisting of myokines and metabolites, may underlie the inter-organ communication between muscle and other organs. To investigate this crosstalk, we developed an in vitro system in which mouse C2C12 myotubes underwent electric pulse stimulation (EPS) to induce contraction. Subsequently the effects of EPS-conditioned media (EPS-CM) on hepatocytes were investigated. Here, we demonstrate that EPS-CM induces Metallothionein 1/2 and Slc30a2 gene expression and reduces Cyp2a3 gene expression in rat hepatocytes. When testing EPS-CM that was generated in the absence of C2C12 myotubes (non-cell EPS-CM) no decrease in Cyp2a3 expression was detected. However, similar inductions in hepatic Mt1/2 and Slc30a2 expression were observed. Non-cell EPS-CM were also applied to C2C12 myotubes and compared to C2C12 myotubes that underwent EPS: here changes in AMPK phosphorylation and myokine secretion largely depended on EPS-induced contraction. Taken together, these findings indicate that EPS can alter C2C12 myotube function and thereby affect gene expression in cells subjected to EPS-CM (Cyp2a3). However, EPS can also generate non-cell-mediated changes in cell culture media, which can affect gene expression in cells subjected to EPS-CM too. While EPS clearly represents a valuable tool in exercise research, care should be taken in experimental design to control for non-cell-mediated effects.
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Dudakova L, Liskova P, Jirsova K. Is copper imbalance an environmental factor influencing keratoconus development? Med Hypotheses 2015; 84:518-24. [PMID: 25758858 DOI: 10.1016/j.mehy.2015.02.017] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Accepted: 02/25/2015] [Indexed: 12/15/2022]
Affiliation(s)
- L Dudakova
- Laboratory of the Biology and Pathology of the Eye, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic.
| | - P Liskova
- Laboratory of the Biology and Pathology of the Eye, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic; Department of Ophthalmology, General Teaching Hospital and First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - K Jirsova
- Laboratory of the Biology and Pathology of the Eye, Institute of Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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24
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Transcriptional response to copper excess and identification of genes involved in heavy metal tolerance in the extremophilic microalga Chlamydomonas acidophila. Extremophiles 2015; 19:657-72. [DOI: 10.1007/s00792-015-0746-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2014] [Accepted: 03/23/2015] [Indexed: 01/05/2023]
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25
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Quiroz N, Rivas N, del Pozo T, Burkhead J, Suazo M, González M, Latorre M. Transcriptional activation of glutathione pathways and role of glucose homeostasis during copper imbalance. Biometals 2015; 28:321-8. [DOI: 10.1007/s10534-015-9834-z] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2014] [Accepted: 02/05/2015] [Indexed: 12/18/2022]
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26
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O'Hara A, Simpson J, Morin P, Loveridge CJ, Williams AC, Novo SM, Stark LA. p300-mediated acetylation of COMMD1 regulates its stability, and the ubiquitylation and nucleolar translocation of the RelA NF-κB subunit. J Cell Sci 2014; 127:3659-65. [PMID: 25074812 PMCID: PMC4150058 DOI: 10.1242/jcs.149328] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/02/2022] Open
Abstract
Nucleolar sequestration of the RelA subunit of nuclear factor (NF)-κB is an important mechanism for regulating NF-κB transcriptional activity. Ubiquitylation, facilitated by COMMD1 (also known as MURR1), acts as a crucial nucleolar-targeting signal for RelA, but how this ubiquitylation is regulated, and how it differs from cytokine-mediated ubiquitylation, which causes proteasomal degradation of RelA, is poorly understood. Here, we report a new role for p300 (also known as EP300) in controlling stimulus-specific ubiquitylation of RelA, through modulation of COMMD1. We show that p300 is required for stress-mediated ubiquitylation and nucleolar translocation of RelA, but that this effect is indirect. We also demonstrate that COMMD1 is acetylated by p300 and that acetylation protects COMMD1 from XIAP-mediated proteosomal degradation. Furthermore, we demonstrate that COMMD1 acetylation is enhanced by aspirin-mediated stress, and that this acetylation is absolutely required for the protein to bind RelA under these conditions. In contrast, tumour necrosis factor (TNF) has no effect on COMMD1 acetylation. Finally, we demonstrate these findings have relevance in a whole tissue setting. These data offer a new paradigm for the regulation of NF-κB transcriptional activity, and the multiple other pathways controlled by COMMD1.
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Affiliation(s)
- Andrew O'Hara
- Edinburgh Cancer Research Centre, IGMM, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - James Simpson
- Edinburgh Cancer Research Centre, IGMM, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - Pierre Morin
- Edinburgh Cancer Research Centre, IGMM, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - Carolyn J Loveridge
- Edinburgh Cancer Research Centre, IGMM, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - Ann C Williams
- Colorectal Tumour Biology Group, School of Cellular and Molecular Medicine, University of Bristol, Bristol BS8 1TH, UK
| | - Sonia M Novo
- Edinburgh Cancer Research Centre, IGMM, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
| | - Lesley A Stark
- Edinburgh Cancer Research Centre, IGMM, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK
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27
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García-Niño WR, Pedraza-Chaverrí J. Protective effect of curcumin against heavy metals-induced liver damage. Food Chem Toxicol 2014; 69:182-201. [PMID: 24751969 DOI: 10.1016/j.fct.2014.04.016] [Citation(s) in RCA: 222] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2014] [Revised: 04/05/2014] [Accepted: 04/08/2014] [Indexed: 02/06/2023]
Abstract
Occupational or environmental exposures to heavy metals produce several adverse health effects. The common mechanism determining their toxicity and carcinogenicity is the generation of oxidative stress that leads to hepatic damage. In addition, oxidative stress induced by metal exposure leads to the activation of the nuclear factor (erythroid-derived 2)-like 2/Kelch-like ECH-associated protein 1/antioxidant response elements (Nrf2/Keap1/ARE) pathway. Since antioxidant and chelating agents are generally used for the treatment of heavy metals poisoning, this review is focused on the protective role of curcumin against liver injury induced by heavy metals. Curcumin has shown, in clinical and preclinical studies, numerous biological activities including therapeutic efficacy against various human diseases and anti-hepatotoxic effects against environmental or occupational toxins. Curcumin reduces the hepatotoxicity induced by arsenic, cadmium, chromium, copper, lead and mercury, prevents histological injury, lipid peroxidation and glutathione (GSH) depletion, maintains the liver antioxidant enzyme status and protects against mitochondrial dysfunction. The preventive effect of curcumin on the noxious effects induced by heavy metals has been attributed to its scavenging and chelating properties, and/or to the ability to induce the Nrf2/Keap1/ARE pathway. However, additional research is needed in order to propose curcumin as a potential protective agent against liver damage induced by heavy metals.
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Affiliation(s)
- Wylly Ramsés García-Niño
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), University City, 04510 D.F., Mexico
| | - José Pedraza-Chaverrí
- Department of Biology, Faculty of Chemistry, National Autonomous University of Mexico (UNAM), University City, 04510 D.F., Mexico.
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28
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Banni M, Hajer A, Sforzini S, Oliveri C, Boussetta H, Viarengo A. Transcriptional expression levels and biochemical markers of oxidative stress in Mytilus galloprovincialis exposed to nickel and heat stress. Comp Biochem Physiol C Toxicol Pharmacol 2014; 160:23-9. [PMID: 24291086 DOI: 10.1016/j.cbpc.2013.11.005] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/20/2013] [Revised: 11/16/2013] [Accepted: 11/18/2013] [Indexed: 11/20/2022]
Abstract
The present study aims to evaluate transcriptional expression levels and biochemical markers of oxidative stress responses to nickel (Ni) exposure along with heat stress gradient in a mussel (Mytilus galloprovincialis). For this purpose, we investigated the response of oxidative stress markers, metallothionein accumulation and gene expression in digestive gland of mussels exposed to a sublethal concentration of Ni (2.5μM) along with a temperature gradient (18°C, 22°C, and 26°C) for 24h and 72h. Ni digestive gland uptake was evaluated after the exposure periods. Co-exposure to Ni and higher temperature (26°C) for 72h significantly decreased the antioxidant enzyme activities termed as catalase (CAT), superoxide dismutase (SOD) and glutathione-S-transferase (GST) and caused a pronounced increase of lipofuscin and neutral lipid (NL) accumulation. Ni-uptake was different with respect to the exposure periods and temperatures in Ni-exposed mussels. Sod, cat, gst, mt-10 and mt20 gene expression levels showed a substantial increased pattern in animals exposed for one day to heat stress compared to the control condition (18°C). The same pattern but with highest level was registered in animals co-exposed to Ni and temperatures within one day. Three days exposure to 18°C, 22°C and 26°C, resulted in a significant decrease in mRNA abundance of cat, gst and sod and a significant down-regulation of mts targets (22°C and 26°C). Our data provide new insights into the importance of the early protective response of oxidative stress related-gene expression and regulation in mussels challenging heat stress and sublethal Ni concentration.
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Affiliation(s)
- Mohamed Banni
- Department of Environmental and Life Sciences, University of Piemonte Orientale Amedeo Avogadro, Via Bellini 25G, 15100 Alessandria, Italy; Laboratory of Biochemistry and Environmental Toxicology, ISA, Chott-Mariem, 4042 Sousse, Tunisia.
| | - Attig Hajer
- Laboratory of Biochemistry and Environmental Toxicology, ISA, Chott-Mariem, 4042 Sousse, Tunisia
| | - Suzanna Sforzini
- Department of Environmental and Life Sciences, University of Piemonte Orientale Amedeo Avogadro, Via Bellini 25G, 15100 Alessandria, Italy
| | - Caterina Oliveri
- Department of Environmental and Life Sciences, University of Piemonte Orientale Amedeo Avogadro, Via Bellini 25G, 15100 Alessandria, Italy
| | - Hamadi Boussetta
- Laboratory of Biochemistry and Environmental Toxicology, ISA, Chott-Mariem, 4042 Sousse, Tunisia
| | - Aldo Viarengo
- Department of Environmental and Life Sciences, University of Piemonte Orientale Amedeo Avogadro, Via Bellini 25G, 15100 Alessandria, Italy
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29
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Fedoseienko A, Bartuzi P, van de Sluis B. Functional understanding of the versatile protein copper metabolism MURR1 domain 1 (COMMD1) in copper homeostasis. Ann N Y Acad Sci 2014; 1314:6-14. [PMID: 24697840 DOI: 10.1111/nyas.12353] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Copper is an important cofactor in numerous biological processes in all living organisms. However, excessive copper can be extremely toxic, so it is vital that the copper level within a cell is tightly regulated. The damaging effect of copper is seen in several hereditary forms of copper toxicity in humans and animals. At present, Wilson's disease is the best-described and best-studied copper-storage disorder in humans; it is caused by mutations in the ATP7B gene. In dogs, a mutation in the COMMD1 gene has been found to be associated with copper toxicosis. Using a liver-specific Commd1 knockout mouse, the biological role of Commd1 in copper homeostasis has been confirmed. Yet, the exact mechanism by which COMMD1 regulates copper homeostasis is still unknown. Here, we give an overview of the current knowledge and perspectives on the molecular function of COMMD1 in copper homeostasis.
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Affiliation(s)
- Alina Fedoseienko
- University of Groningen, University Medical Center Groningen, Molecular Genetics section, Groningen, the Netherlands
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30
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Yuk IH, Zhang JD, Ebeling M, Berrera M, Gomez N, Werz S, Meiringer C, Shao Z, Swanberg JC, Lee KH, Luo J, Szperalski B. Effects of copper on CHO cells: Insights from gene expression analyses. Biotechnol Prog 2014; 30:429-42. [DOI: 10.1002/btpr.1868] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2013] [Revised: 12/18/2013] [Indexed: 12/11/2022]
Affiliation(s)
- Inn H. Yuk
- Early Stage Cell Culture; Genentech, 1 DNA Way; South San Francisco CA 94080
| | | | | | | | - Natalia Gomez
- Early Stage Cell Culture; Genentech, 1 DNA Way; South San Francisco CA 94080
| | - Silke Werz
- Pharma Technical Development Europe; Roche Penzberg 82377 Germany
| | | | - Zhixin Shao
- Pharma Technical Development Europe; Roche Penzberg 82377 Germany
| | - Jeffrey C. Swanberg
- Delaware Biotechnology Inst., University of Delaware; 15 Innovation Way Newark DE 19711
| | - Kelvin H. Lee
- Delaware Biotechnology Inst., University of Delaware; 15 Innovation Way Newark DE 19711
| | - Jun Luo
- Vacaville Manufacturing Sciences and Technology; Genentech, 1000 New Horizons Way Vacaville CA 95688
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31
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Sandoval IT, Manos EJ, Van Wagoner RM, Delacruz RGC, Edes K, Winge DR, Ireland CM, Jones DA. Juxtaposition of chemical and mutation-induced developmental defects in zebrafish reveal a copper-chelating activity for kalihinol F. ACTA ACUST UNITED AC 2014; 20:753-63. [PMID: 23790486 DOI: 10.1016/j.chembiol.2013.05.008] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2012] [Revised: 05/10/2013] [Accepted: 05/13/2013] [Indexed: 12/17/2022]
Abstract
A major hurdle in using complex systems for drug screening is the difficulty of defining the mechanistic targets of small molecules. The zebrafish provides an excellent model system for juxtaposing developmental phenotypes with mechanism discovery using organism genetics. We carried out a phenotype-based screen of uncharacterized small molecules in zebrafish that produced a variety of chemically induced phenotypes with potential genetic parallels. Specifically, kalihinol F caused an undulated notochord, defects in pigment formation, hematopoiesis, and neural development. These phenotypes were strikingly similar to the zebrafish mutant, calamity, an established model of copper deficiency. Further studies into the mechanism of action of kalihinol F revealed a copper-chelating activity. Our data support this mechanism of action for kalihinol F and the utility of zebrafish as an effective system for identifying therapeutic and target pathways.
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Affiliation(s)
- Imelda T Sandoval
- Department of Oncological Sciences, University of Utah, Salt Lake City, UT 84112, USA
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32
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Argüello G, Martinez P, Peña J, Chen O, Platt F, Zanlungo S, González M. Hepatic metabolic response to restricted copper intake in a Niemann–Pick C murine model. Metallomics 2014; 6:1527-39. [DOI: 10.1039/c4mt00056k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Niemann–Pick C disease (NPC) is a vesicular trafficking disorder primarily caused by mutations in theNpc1gene and characterized by liver dysfunction and neuropathology.
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Affiliation(s)
- Graciela Argüello
- INTA
- Laboratorio de Bioinformática y Expresión Génica
- Universidad de Chile
- Santiago, Chile
- FONDAP-Center of Genome Regulation (CGR)
| | - Pablo Martinez
- Departamento de Gastroenterología
- Facultad de Medicina
- Pontificia Universidad Católica de Chile
- Santiago, Chile
| | - Juan Peña
- INTA
- Laboratorio de Bioinformática y Expresión Génica
- Universidad de Chile
- Santiago, Chile
| | - Oscar Chen
- Department of Pharmacology
- University of Oxford
- Oxford OX1 3QT, UK
| | - Frances Platt
- Department of Pharmacology
- University of Oxford
- Oxford OX1 3QT, UK
| | - Silvana Zanlungo
- FONDAP-Center of Genome Regulation (CGR)
- Santiago, Chile
- Departamento de Gastroenterología
- Facultad de Medicina
- Pontificia Universidad Católica de Chile
| | - Mauricio González
- INTA
- Laboratorio de Bioinformática y Expresión Génica
- Universidad de Chile
- Santiago, Chile
- FONDAP-Center of Genome Regulation (CGR)
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33
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Cuillel M, Chevallet M, Charbonnier P, Fauquant C, Pignot-Paintrand I, Arnaud J, Cassio D, Michaud-Soret I, Mintz E. Interference of CuO nanoparticles with metal homeostasis in hepatocytes under sub-toxic conditions. NANOSCALE 2014; 6:1707-1715. [PMID: 24343273 DOI: 10.1039/c3nr05041f] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Copper oxide nanoparticles (CuO-NP) were studied for their toxicity and mechanism of action on hepatocytes (HepG2), in relation to Cu homeostasis disruption. Indeed, hepatocytes, in the liver, are responsible for the whole body Cu balance and should be a major line of defence in the case of exposure to CuO-NP. We investigated the early responses to sub-toxic doses of CuO-NP and compared them to equivalent doses of Cu added as salt to see if there is a specific nano-effect related to Cu homeostasis in hepatocytes. The expression of the genes encoding the Cu-ATPase ATP7B, metallothionein 1X, heme oxygenase 1, heat shock protein 70, superoxide dismutase 1, glutamate cysteine ligase modifier subunit, metal responsive element-binding transcription factor 1 and zinc transporter 1 was analyzed by qRT-PCR. These genes are known to be involved in response to Cu, Zn and/or oxidative stresses. Except for MTF1, ATP7B and SOD1, we clearly observed an up regulation of these genes expression in CuO-NP treated cells, as compared to CuCl2. In addition, ATP7B trafficking from the Golgi network to the bile canaliculus membrane was observed in WIF-B9 cells, showing a need for Cu detoxification. This shows an increase in the intracellular Cu concentration, probably due to Cu release from endosomal CuO-NP solubilisation. Our data show that CuO-NP enter hepatic cells, most probably by endocytosis, bypassing the cellular defence mechanism against Cu, thus acting as a Trojan horse. Altogether, this study suggests that sub-toxic CuO-NP treatments induce successively a Cu overload, a Cu-Zn exchange on metallothioneins and MTF1 regulation on both Cu and Zn homeostasis.
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34
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Gutiérrez-García R, del Pozo T, Suazo M, Cambiazo V, González M. Physiological copper exposure in Jurkat cells induces changes in the expression of genes encoding cholesterol biosynthesis proteins. Biometals 2013; 26:1033-40. [PMID: 24170205 DOI: 10.1007/s10534-013-9680-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2013] [Accepted: 10/17/2013] [Indexed: 10/26/2022]
Abstract
Copper is an essential micronutrient that functions as an enzymatic cofactor in a wide range of cellular processes. Although adequate Cu levels are essential for normal metabolism, excess Cu can be toxic to cells. Cellular responses to copper deficiency and overload involve changes in the expression of genes directly and indirectly involved in copper metabolism. However little is known on the effect of physiological copper concentration on gene expression changes. In the current study we aimed to establish whether the expression of genes encoding enzymes related to cholesterol (hmgcs1, hmgcr, fdft) and fatty acid biosynthesis and LDL receptor can be induced by an iso-physiological copper concentration. The iso-physiological copper concentration was determined as the bioavailable plasmatic copper in a healthy adult population. In doing so, two blood cell lines (Jurkat and THP-1) were exposed for 6 or 24 h to iso- or supraphysiological copper concentrations. Our results indicated that in cells exposed to an iso-physiological copper concentration the early induction of genes involved in lipid metabolism was not mediated by copper itself but by the modification of the cellular redox status. Thus our results contributed to understand the involvement of copper in the regulation of cholesterol metabolism under physiological conditions.
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Affiliation(s)
- Ricardo Gutiérrez-García
- Laboratorio de Bioinformática y Expresión Génica, INTA, Universidad de Chile, El Líbano 5524, Macul, Santiago, Chile
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35
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Tuning NF-κB activity: a touch of COMMD proteins. Biochim Biophys Acta Mol Basis Dis 2013; 1832:2315-21. [PMID: 24080195 DOI: 10.1016/j.bbadis.2013.09.014] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2013] [Revised: 09/06/2013] [Accepted: 09/23/2013] [Indexed: 12/28/2022]
Abstract
NF-κB is an important regulator of immunity and inflammation, and its activation pathway has been studied extensively. The mechanisms that downregulate the activity of NF-κB have also received a lot of attention, particularly since its activity needs to be terminated to prevent chronic inflammation and subsequent tissue damage. The COMMD family has been identified as a new group of proteins involved in NF-κB termination. All ten COMMD members share the structurally conserved carboxy-terminal motif, the COMM domain, and are ubiquitously expressed. They seem to play distinct and non-redundant roles in various physiological processes, including NF-κB signaling. In this review, we describe the mechanisms and proteins involved in the termination of canonical NF-κB signaling, with a specific focus on the role of the COMMD family in the down-modulation of NF-κB.
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36
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Scheiber IF, Dringen R. Astrocyte functions in the copper homeostasis of the brain. Neurochem Int 2012; 62:556-65. [PMID: 22982300 DOI: 10.1016/j.neuint.2012.08.017] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2012] [Revised: 08/16/2012] [Accepted: 08/30/2012] [Indexed: 12/18/2022]
Abstract
Copper is an essential element that is required for a variety of important cellular functions. Since not only copper deficiency but also excess of copper can seriously affect cellular functions, the cellular copper metabolism is tightly regulated. In brain, astrocytes appear to play a pivotal role in the copper metabolism. With their strategically important localization between capillary endothelial cells and neuronal structures they are ideally positioned to transport copper from the blood-brain barrier to parenchymal brain cells. Accordingly, astrocytes have the capacity to efficiently take up, store and to export copper. Cultured astrocytes appear to be remarkably resistant against copper-induced toxicity. However, copper exposure can lead to profound alterations in the metabolism of these cells. This article will summarize the current knowledge on the copper metabolism of astrocytes, will describe copper-induced alterations in the glucose and glutathione metabolism of astrocytes and will address the potential role of astrocytes in the copper metabolism of the brain in diseases that have been connected with disturbances in brain copper homeostasis.
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Affiliation(s)
- Ivo F Scheiber
- Center for Biomolecular Interactions Bremen, University of Bremen, P.O. Box 330440, D-28334 Bremen, Germany
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37
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Urso E, Manno D, Serra A, Buccolieri A, Rizzello A, Danieli A, Acierno R, Salvato B, Maffia M. Role of the Cellular Prion Protein in the Neuron Adaptation Strategy to Copper Deficiency. Cell Mol Neurobiol 2012; 32:989-1001. [DOI: 10.1007/s10571-012-9815-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2011] [Accepted: 02/07/2012] [Indexed: 01/15/2023]
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38
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Fieten H, Leegwater PAJ, Watson AL, Rothuizen J. Canine models of copper toxicosis for understanding mammalian copper metabolism. Mamm Genome 2012; 23:62-75. [PMID: 22147205 PMCID: PMC3275736 DOI: 10.1007/s00335-011-9378-7] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2011] [Accepted: 11/11/2011] [Indexed: 01/13/2023]
Abstract
Hereditary forms of copper toxicosis exist in man and dogs. In man, Wilson's disease is the best studied disorder of copper overload, resulting from mutations in the gene coding for the copper transporter ATP7B. Forms of copper toxicosis for which no causal gene is known yet are recognized as well, often in young children. Although advances have been made in unraveling the genetic background of disorders of copper metabolism in man, many questions regarding disease mechanisms and copper homeostasis remain unanswered. Genetic studies in the Bedlington terrier, a dog breed affected with copper toxicosis, identified COMMD1, a gene that was previously unknown to be involved in copper metabolism. Besides the Bedlington terrier, a number of other dog breeds suffer from hereditary copper toxicosis and show similar phenotypes to humans with copper storage disorders. Unlike the heterogeneity of most human populations, the genetic structure within a purebred dog population is homogeneous, which is advantageous for unraveling the molecular genetics of complex diseases. This article reviews the work that has been done on the Bedlington terrier, summarizes what was learned from studies into COMMD1 function, describes hereditary copper toxicosis phenotypes in other dog breeds, and discusses the opportunities for genome-wide association studies on copper toxicosis in the dog to contribute to the understanding of mammalian copper metabolism and copper metabolism disorders in man.
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Affiliation(s)
- Hille Fieten
- Department of Clinical Sciences of Companion Animals, Faculty of Veterinary Medicine, Utrecht University, Yalelaan 108, 3584 CM Utrecht, The Netherlands.
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39
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Araya M, Núñez H, Pavez L, Arredondo M, Méndez M, Cisternas F, Pizarro F, Sierralta W, Uauy R, González M. Administration of high doses of copper to capuchin monkeys does not cause liver damage but induces transcriptional activation of hepatic proliferative responses. J Nutr 2012; 142:233-7. [PMID: 22223567 DOI: 10.3945/jn.111.140103] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Liver cells respond to copper loading upregulating protective mechanisms. However, to date, except for liver content, there are no good indicators that identify individuals with excess liver copper. We hypothesized that administering high doses of copper to young (5.5 mg Cu · kg⁻¹ . d⁻¹) and adult (7.5 mg Cu · kg⁻¹ . d⁻¹) capuchin monkeys would induce detectable liver damage. Study groups included adult monkeys (2 females, 2 males) 3-3.5 y old at enrollment treated with copper for 36 mo (ACu); age-matched controls (1 female, 3 males) that did not receive additional copper (AC); young monkeys (2 female, 2 males) treated from birth with copper for 36 mo (YCu); and young age-matched controls (2 female, 2 males) that did not receive additional copper (YC). We periodically assessed clinical, blood biochemical, and liver histological indicators and at 36 mo the hepatic mRNA abundance of MT2a, APP, DMT1, CTR1, HGF, TGFβ, and NFκΒ only in adult monkeys. After 36 mo, the liver copper concentration was 4-5 times greater in treated monkeys relative to controls. All monkeys remained healthy with normal routine serum biochemical indices and there was no evidence of liver tissue damage. Relative mRNA abundance of HGF, TGFβ and NFκB was significantly greater in ACu than in AC monkeys. In conclusion, capuchin monkeys exposed to copper at doses up to 50 times the current upper level enhanced expression of genes related to inflammation and injury without clinical, blood biochemical, or histological evidence of liver damage.
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Affiliation(s)
- Magdalena Araya
- Institute of Nutrition and Food Technology, Universidad de Chile, Santiago, Chile.
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Stathopoulou MG, Kanoni S, Papanikolaou G, Antonopoulou S, Nomikos T, Dedoussis G. Mineral Intake. PROGRESS IN MOLECULAR BIOLOGY AND TRANSLATIONAL SCIENCE 2012; 108:201-36. [DOI: 10.1016/b978-0-12-398397-8.00009-5] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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41
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Tarhan C, Sarikaya A. Does copper stress lead to spindle misposition-dependent cell cycle arrest? GENETICS AND MOLECULAR RESEARCH 2012; 11:3824-34. [DOI: 10.4238/2012.october.25.1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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42
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Roberts EA. Using metalloproteomics to investigate the cellular physiology of copper in hepatocytes. Metallomics 2012; 4:633-40. [DOI: 10.1039/c2mt20019h] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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43
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He K, Chen Z, Ma Y, Pan Y. Identification of high-copper-responsive target pathways in Atp7b knockout mouse liver by GSEA on microarray data sets. Mamm Genome 2011; 22:703-13. [PMID: 21997183 DOI: 10.1007/s00335-011-9359-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2011] [Accepted: 09/22/2011] [Indexed: 01/16/2023]
Affiliation(s)
- Kan He
- School of Agriculture and Biology, Department of Animal Sciences, Shanghai Jiao Tong University, Shanghai, Peoples' Republic of China.
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Burkhead JL, Gray LW, Lutsenko S. Systems biology approach to Wilson's disease. Biometals 2011; 24:455-66. [PMID: 21380607 PMCID: PMC3106420 DOI: 10.1007/s10534-011-9430-9] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2010] [Accepted: 02/19/2011] [Indexed: 12/12/2022]
Abstract
Wilson's disease (WD) is a severe disorder of copper misbalance, which manifests with a wide spectrum of liver pathology and/or neurologic and psychiatric symptoms. WD is caused by mutations in a gene encoding a copper-transporting ATPase ATP7B and is accompanied by accumulation of copper in tissues, especially in the liver. Copper-chelation therapy is available for treatment of WD symptoms and is often successful, however, significant challenges remain with respect to timely diagnostics and treatment of the disease. The lack of genotype-phenotype correlation remains unexplained, the causes of fulminant liver failure are not known, and the treatment of neurologic symptoms is only partially successful, underscoring the need for better understanding of WD mechanisms and factors that influence disease manifestations. Recent gene and protein profiling studies in animal models of WD began to uncover cellular processes that are primarily affected by copper accumulation in the liver. The results of such studies, summarized in this review, revealed new molecular players and pathways (cell cycle and cholesterol metabolism, mRNA splicing and nuclear receptor signaling) linked to copper misbalance. A systems biology approach promises to generate a comprehensive view of WD onset and progression, thus helping with a more fine-tune treatment and monitoring of the disorder.
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Andreani G, Cottignoli S, Perfetti B, Kismali G, Carpenè E, Isani G. Trace elements and metallothionein in liver and kidney of Felis catus. Biol Trace Elem Res 2010; 137:177-89. [PMID: 19946758 DOI: 10.1007/s12011-009-8569-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/13/2009] [Accepted: 11/04/2009] [Indexed: 01/09/2023]
Abstract
Trace metals such as Zn, Cu, and Fe are essential for life; differently, no biochemical function is known for Cd. Changes in dietary metal concentrations can cause deficiency or toxicity. Studies on trace elements in cat are lacking. This paper aimed to analyze Zn, Cu, Fe and Cd concentrations in liver and kidney of pathological domestic cat and to isolate metallothionein (MT) in these tissues. It was not possible to explore a possible correlation between metal concentrations and pathologies because the incidence for each of them was too low. Fe was the most abundant metal; in particular, the liver accumulates average Fe concentrations one order of magnitude higher than Zn and Cu, ranging from 66.75 and 1,444.23 microg/g. Significantly, higher levels of Fe were found in the liver of elder animals. Zn concentrations varied between 26.31 and 84.78 microg/g in the liver whereas in the kidney, ranged between 7.69 and 71.15 microg/g. Cu concentrations were between 2.37 and 112.91 microg/g in liver and between 2.12 and 9.85 microg/g in kidney. Cd was the least abundant metal with the exception of the kidney of the oldest cats where it reached a maximum of 13.71 microg/g. Gel-filtration metal distribution profiles from cytosolic extracts revealed the presence of Cd, Cu, Zn thioneins either in the liver or in the kidney. Because tissue samples were taken from pathological cats from different breed and age, care must be taken to use these data as a baseline profile of trace elements in healthy animals. Our results are indicative that for some specimens the feed levels of Fe and Cu could be higher than the optimal dietary intake and in few cats, there was also an exposure to Cd that was counteracted by MT biosynthesis.
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Affiliation(s)
- Giulia Andreani
- Veterinary Clinical Department, Alma Mater Studiorum, University of Bologna, Via Tolara di Sopra 50, 40064 Ozzano Emilia, Bologna, Italy
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Role of hepatocyte nuclear factor 4α in controlling copper-responsive transcription. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2010; 1813:102-8. [PMID: 20875833 DOI: 10.1016/j.bbamcr.2010.09.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/05/2010] [Revised: 09/07/2010] [Accepted: 09/16/2010] [Indexed: 01/04/2023]
Abstract
Previous global transcriptome and interactome analyses of copper-treated HepG2 cells identified hepatocyte nuclear factor 4α (HNF4α) as a potential master regulator of copper-responsive transcription. Copper exposure caused a decrease in the expression of HNF4α at both mRNA and protein levels, which was accompanied by a decrease in the level of HNF4α binding to its consensus DNA binding sequence. qRT-PCR and RNAi studies demonstrated that changes in HNF4α expression ultimately affected the expressions of its down-stream target genes. Analysis of upstream regulators of HNF4α expression, including p53 and ATF3, showed that copper caused an increase in the steady-state levels of these proteins. These results support a model for copper-responsive transcription in which the metal affects ATF3 expression and stabilizes p53 resulting in the down-regulation of HNF4α expression. In addition, copper may directly affect p53 protein levels. The suppression of HNF4α activity may contribute to the molecular mechanisms underlying the physiological and toxicological consequences of copper toxicity in hepatic-derived cells.
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Bigagli E, Luceri C, Bernardini S, Dei A, Dolara P. Extremely low copper concentrations affect gene expression profiles of human prostate epithelial cell lines. Chem Biol Interact 2010; 188:214-9. [PMID: 20599845 DOI: 10.1016/j.cbi.2010.06.009] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/2010] [Revised: 06/03/2010] [Accepted: 06/14/2010] [Indexed: 11/16/2022]
Abstract
Although cellular copper metabolism is tightly regulated through a variety of copper transport proteins and chaperones, disturbances in copper homeostasis are involved in several pathological disorders. The aim of this study was to evaluate the effects of extremely low copper concentrations on gene expression profiles of a line of human prostate epithelial cells (RWPE) which grows in the absence of fetal calf serum, a source of variable and unpredictable copper. Cells were exposed to copper(II) sulfate for 24h at concentrations varying from 10(-6) to 10(-17)M and untreated reference cells were exposed to the same volume of copper-free water. Relative gene expression variations between copper-treated and control cells were studied with microarray technology using the Whole Human Genome Array from Agilent. Microarray data demonstrated that copper added to the medium varied gene expression at all concentrations tested. Many genes belonging to functional gene families were modulated by copper, some dose-dependently. Amongst these genes metallothioneins (MT1A and MT2A) were over-expressed at all copper concentrations, MT1M was up-regulated between 10(-6) and 10(-9)M, while MT1B, MT1E, MT1G and MT1H were up-regulated between 10(-6) and 10(-14)M. The heat shock protein (HSP) gene family showed similar behavior: some HSP genes were constantly up-regulated by copper (HSP90Ad, HSP90B1 and HSPD1) and others only at higher concentrations (HSP90AB1 and HSPA8). Reverse-transcription-PCR analysis, performed on four different genes on five biological replicates for selected genes, on each copper concentration tested, confirmed the trend observed in microarray results. In conclusion, we unexpectedly observed a modulation of gene expression even at extremely diluted copper concentrations, similar to that induced by toxic concentrations, possibly as a result of very tight control of free copper(II) levels inside the cells.
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Affiliation(s)
- Elisabetta Bigagli
- Department of Pharmacology, University of Florence, Viale Pieraccini 6, 50139, Florence, Italy
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Wang M, Yang F, Zhang X, Zhao H, Wang Q, Pan Y. Comparative analysis of MTF-1 binding sites between human and mouse. Mamm Genome 2010; 21:287-98. [PMID: 20383712 DOI: 10.1007/s00335-010-9257-7] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2009] [Accepted: 03/26/2010] [Indexed: 01/19/2023]
Abstract
MTF-1 is a crucial transcription factor involved in the cellular response to heavy-metal load and other stresses by specifically binding to metal response elements (MREs). Thus far only a handful of direct target genes are known for this transcription factor, limiting our understanding of the biological network it governs. In this article we try to employ a computational strategy based on the generation of literature-based positional weight matrices (PWM) and log-likelihood scoring of the candidate binding sites (BSs) for identification of direct targets of the transcription factor MTF-1 in human and mouse. Through comparisons, we explore the conservation and unique characteristics between two species. Our results show that the numbers of MREs differ dramatically between species and their positions relative to their cognate promoter is also flexible. Importantly, we identify a set of target genes generally well conserved between human and mouse. Finally, by combining expression analysis we provide two putative targets (HMGCR and CYP51A), which regulate lipid metabolism conserved in human and mouse. Overall, interspecies comparison from our study may provide some valuable information for further studying human Wilson disease (WD) using mouse model systems.
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Affiliation(s)
- Minghui Wang
- Department of Animal Sciences, School of Agriculture and Biology, Shanghai Jiao Tong University, Shanghai, People's Republic of China
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del Pozo T, Cambiazo V, González M. Gene expression profiling analysis of copper homeostasis in Arabidopsis thaliana. Biochem Biophys Res Commun 2010; 393:248-52. [DOI: 10.1016/j.bbrc.2010.01.111] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2010] [Accepted: 01/27/2010] [Indexed: 11/26/2022]
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50
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Balesaria S, Ramesh B, McArdle H, Bayele HK, Srai SKS. Divalent metal-dependent regulation of hepcidin expression by MTF-1. FEBS Lett 2010; 584:719-25. [PMID: 20026331 DOI: 10.1016/j.febslet.2009.12.023] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2009] [Revised: 12/11/2009] [Accepted: 12/15/2009] [Indexed: 10/20/2022]
Abstract
Hepcidin is a small acute phase peptide that regulates iron absorption. It is induced by inflammation and infection, but is repressed by anaemia and hypoxia. Here we further reveal that hepcidin transcription also involves interactions between functional metal response elements (MREs) in its promoter, and the MRE-binding transcription factor-1. Analysis of hepcidin mRNA and protein levels in hepatoma cells suggests that its expression may be regulated by divalent metal ions, with zinc inducing maximal effects on hepcidin levels. These data suggest that this peptide may be a pleiotropic sensor of divalent metals, some of which are xenobiotic environmental toxins.
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Affiliation(s)
- Sara Balesaria
- Department of Structural and Molecular Biology, Division of Biosciences, University College London, London, United Kingdom.
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