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Locatelli M, Farina C. Role of copper in central nervous system physiology and pathology. Neural Regen Res 2025; 20:1058-1068. [PMID: 38989937 DOI: 10.4103/nrr.nrr-d-24-00110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2024] [Accepted: 04/23/2024] [Indexed: 07/12/2024] Open
Abstract
Copper is a transition metal and an essential element for the organism, as alterations in its homeostasis leading to metal accumulation or deficiency have pathological effects in several organs, including the central nervous system. Central copper dysregulations have been evidenced in two genetic disorders characterized by mutations in the copper-ATPases ATP7A and ATP7B, Menkes disease and Wilson's disease, respectively, and also in multifactorial neurological disorders such as Alzheimer's disease, Parkinson's disease, amyotrophic lateral sclerosis, and multiple sclerosis. This review summarizes current knowledge about the role of copper in central nervous system physiology and pathology, reports about unbalances in copper levels and/or distribution under disease, describes relevant animal models for human disorders where copper metabolism genes are dysregulated, and discusses relevant therapeutic approaches modulating copper availability. Overall, alterations in copper metabolism may contribute to the etiology of central nervous system disorders and represent relevant therapeutic targets to restore tissue homeostasis.
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Affiliation(s)
- Martina Locatelli
- Institute of Experimental Neurology, Division of Neuroscience, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, Milan, Italy
- Vita-Salute San Raffaele University, Milan, Italy
| | - Cinthia Farina
- Institute of Experimental Neurology, Division of Neuroscience, Istituto di Ricovero e Cura a Carattere Scientifico (IRCCS) San Raffaele Scientific Institute, Milan, Italy
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2
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Min JH, Sarlus H, Harris RA. Copper toxicity and deficiency: the vicious cycle at the core of protein aggregation in ALS. Front Mol Neurosci 2024; 17:1408159. [PMID: 39050823 PMCID: PMC11267976 DOI: 10.3389/fnmol.2024.1408159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2024] [Accepted: 06/14/2024] [Indexed: 07/27/2024] Open
Abstract
The pathophysiology of ALS involves many signs of a disruption in copper homeostasis, with both excess free levels and functional deficiency likely occurring simultaneously. This is crucial, as many important physiological functions are performed by cuproenzymes. While it is unsurprising that many ALS symptoms are related to signs of copper deficiency, resulting in vascular, antioxidant system and mitochondrial oxidative respiration deficiencies, there are also signs of copper toxicity such as ROS generation and enhanced protein aggregation. We discuss how copper also plays a key role in proteostasis and interacts either directly or indirectly with many of the key aggregate-prone proteins implicated in ALS, such as TDP-43, C9ORF72, SOD1 and FUS as well as the effect of their aggregation on copper homeostasis. We suggest that loss of cuproprotein function is at the core of ALS pathology, a condition that is driven by a combination of unbound copper and ROS that can either initiate and/or accelerate protein aggregation. This could trigger a positive feedback cycle whereby protein aggregates trigger the aggregation of other proteins in a chain reaction that eventually captures elements of the proteostatic mechanisms in place to counteract them. The end result is an abundance of aggregated non-functional cuproproteins and chaperones alongside depleted intracellular copper stores, resulting in a general lack of cuproenzyme function. We then discuss the possible aetiology of ALS and illustrate how strong risk factors including environmental toxins such as BMAA and heavy metals can functionally behave to promote protein aggregation and disturb copper metabolism that likely drives this vicious cycle in sporadic ALS. From this synthesis, we propose restoration of copper balance using copper delivery agents in combination with chaperones/chaperone mimetics, perhaps in conjunction with the neuroprotective amino acid serine, as a promising strategy in the treatment of this incurable disease.
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Affiliation(s)
- Jin-Hong Min
- Department of Clinical Neuroscience, Karolinska Institutet, Center for Molecular Medicine, Karolinska University Hospital at Solna, Stockholm, Sweden
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3
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Xu M, Li M, Benz F, Merchant M, McClain CJ, Song M. Ileum Proteomics Identifies Distinct Pathways Associated with Different Dietary Doses of Copper-Fructose Interactions: Implications for the Gut-Liver Axis and MASLD. Nutrients 2024; 16:2083. [PMID: 38999831 PMCID: PMC11242941 DOI: 10.3390/nu16132083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2024] [Revised: 06/23/2024] [Accepted: 06/27/2024] [Indexed: 07/14/2024] Open
Abstract
The interactions of different dietary doses of copper with fructose contribute to the development of metabolic dysfunction-associated steatotic liver disease (MASLD) via the gut-liver axis. The underlying mechanisms remain elusive. The aim of this study was to identify the specific pathways leading to gut barrier dysfunction in the ileum using a proteomics approach in a rat model. Male weanling Sprague Dawley rats were fed diets with adequate copper (CuA), marginal copper (CuM), or supplemented copper (CuS) in the absence or presence of fructose supplementation (CuAF, CuMF, and CuSF) for 4 weeks. Ileum protein was extracted and analyzed with an LC-MS. A total of 2847 differentially expressed proteins (DEPs) were identified and submitted to functional enrichment analysis. As a result, the ileum proteome and signaling pathways that were differentially altered were revealed. Of note, the CuAF is characterized by the enrichment of oxidative phosphorylation and ribosome as analyzed with the KEGG; the CuMF is characterized by an enriched arachidonic acid metabolism pathway; and focal adhesion, the regulation of the actin cytoskeleton, and tight junction were significantly enriched by the CuSF. In conclusion, our proteomics analysis identified the specific pathways in the ileum related to the different dietary doses of copper-fructose interactions, suggesting that distinct mechanisms in the gut are involved in the development of MASLD.
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Affiliation(s)
- Manman Xu
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, KY 40202, USA; (M.X.); (C.J.M.)
| | - Ming Li
- Department of Medicine, Division of Nephrology and Hypertension, University of Louisville School of Medicine, Louisville, KY 40202, USA; (M.L.); (M.M.)
- Hepatobiology & Toxicology Center, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Frederick Benz
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA;
| | - Michael Merchant
- Department of Medicine, Division of Nephrology and Hypertension, University of Louisville School of Medicine, Louisville, KY 40202, USA; (M.L.); (M.M.)
- Hepatobiology & Toxicology Center, University of Louisville School of Medicine, Louisville, KY 40202, USA
- University of Louisville Alcohol Research Center, University of Louisville School of Medicine, Louisville, KY 40202, USA
| | - Craig J. McClain
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, KY 40202, USA; (M.X.); (C.J.M.)
- Hepatobiology & Toxicology Center, University of Louisville School of Medicine, Louisville, KY 40202, USA
- Department of Pharmacology and Toxicology, University of Louisville School of Medicine, Louisville, KY 40202, USA;
- University of Louisville Alcohol Research Center, University of Louisville School of Medicine, Louisville, KY 40202, USA
- Robley Rex Louisville VAMC, Louisville, KY 40206, USA
| | - Ming Song
- Department of Medicine, Division of Gastroenterology, Hepatology and Nutrition, University of Louisville School of Medicine, Louisville, KY 40202, USA; (M.X.); (C.J.M.)
- Hepatobiology & Toxicology Center, University of Louisville School of Medicine, Louisville, KY 40202, USA
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4
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Li C, Liu Z, Wei W, Chen C, Zhang L, Wang Y, Zhou B, Liu L, Li X, Zhao C. Exploring the Regulatory Effect of LPJZ-658 on Copper Deficiency Combined with Sugar-Induced MASLD in Middle-Aged Mice Based on Multi-Omics Analysis. Nutrients 2024; 16:2010. [PMID: 38999758 PMCID: PMC11243161 DOI: 10.3390/nu16132010] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2024] [Revised: 06/14/2024] [Accepted: 06/15/2024] [Indexed: 07/14/2024] Open
Abstract
Globally, metabolic dysfunction-associated steatotic liver disease (MASLD), previously termed nonalcoholic fatty liver disease (NAFLD), is one of the most common liver disorders and is strongly associated with copper deficiency. To explore the potential effects and mechanisms of Lactiplantibacillus plantarum LPJZ-658, copper deficiency combined with a high-sugar diet-induced MASLD mouse model was utilized in this study. We fed 40-week-old (middle-aged) male C57BL/6 mice a copper-deficient and high-sugar diet for 16 weeks (CuDS), with supplementary LPJZ-658 for the last 6 weeks (CuDS + LPJZ-658). In this study, we measured body weight, liver weight, and serum biochemical markers. Lipid accumulation, histology, lipidomics, and sphingolipid metabolism-related enzyme expression were investigated to analyze liver function. Untargeted metabolomics was used to analyze the serum and the composition and abundance of intestinal flora. In addition, the correlation between differential liver lipid profiles, serum metabolites, and gut flora at the genus level was measured. The results show that LPJZ-658 significantly improves abnormal liver function and hepatic steatosis. The lipidomics analyses and metabolic pathway analysis identified sphingolipid, retinol, and glycerophospholipid metabolism as the most relevant metabolic pathways that characterized liver lipid dysregulation in the CuDS group. Consistently, RT-qPCR analyses revealed that the enzymes catalyzing sphingolipid metabolism that were significantly upregulated in the CuDS group were downregulated by the LPJZ-658 treatment. In addition, the serum metabolomics results indicated that the linoleic acid, taurine and hypotaurine, and ascorbate and aldarate metabolism pathways were associated with CuDS-induced MASLD. Notably, we found that treatment with LPJZ-658 partially reversed the changes in the differential serum metabolites. Finally, LPJZ-658 effectively regulated intestinal flora abnormalities and was significantly correlated with differential hepatic lipid species and serum metabolites. In conclusion, we elucidated the function and potential mechanisms of LPJZ-658 in alleviating copper deficiency combined with sugar-induced middle-aged MASLD and hope this will provide possible treatment strategies for improving MASLD.
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Affiliation(s)
- Chunhua Li
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin City 132101, China; (C.L.); (Z.L.); (C.C.); (L.Z.); (L.L.)
| | - Ziqi Liu
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin City 132101, China; (C.L.); (Z.L.); (C.C.); (L.Z.); (L.L.)
| | - Wei Wei
- State Key Laboratory of Pathogen and Biosecurity, Beijing Institute of Microbiology and Epidemiology, Beijing 100071, China;
| | - Chen Chen
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin City 132101, China; (C.L.); (Z.L.); (C.C.); (L.Z.); (L.L.)
| | - Lichun Zhang
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin City 132101, China; (C.L.); (Z.L.); (C.C.); (L.Z.); (L.L.)
| | - Yang Wang
- Jilin Ginseng Academy, Changchun University of Chinese Medicine, Changchun 130117, China;
| | - Bo Zhou
- Research Unit of Key Technologies for Prevention and Control of Virus Zoonoses, Changchun Veterinary Research Institute, Chinese Academy of Medical Sciences, Changchun 130122, China;
| | - Liming Liu
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin City 132101, China; (C.L.); (Z.L.); (C.C.); (L.Z.); (L.L.)
| | - Xiao Li
- Research Unit of Key Technologies for Prevention and Control of Virus Zoonoses, Changchun Veterinary Research Institute, Chinese Academy of Medical Sciences, Changchun 130122, China;
- Academician Workstation of Jilin Province, Changchun University of Chinese Medicine, Changchun 130117, China
| | - Cuiqing Zhao
- College of Animal Science and Technology, Jilin Agricultural Science and Technology University, Jilin City 132101, China; (C.L.); (Z.L.); (C.C.); (L.Z.); (L.L.)
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5
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Jiang Q, Wang N, Lu S, Xiong J, Yuan Y, Liu J, Chen S. Targeting hepatic ceruloplasmin mitigates nonalcoholic steatohepatitis by modulating bile acid metabolism. J Mol Cell Biol 2024; 15:mjad060. [PMID: 37771074 PMCID: PMC10993722 DOI: 10.1093/jmcb/mjad060] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2023] [Revised: 09/19/2023] [Accepted: 09/27/2023] [Indexed: 09/30/2023] Open
Abstract
Nonalcoholic steatohepatitis (NASH) is a condition that progresses from nonalcoholic fatty liver disease (NAFLD) and is characterized by hepatic fat accumulation, inflammation, and fibrosis. It has the potential to develop into cirrhosis and liver cancer, and currently no effective pharmacological treatment is available. In this study, we investigate the therapeutic potential of targeting ceruloplasmin (Cp), a copper-containing protein predominantly secreted by hepatocytes, for treating NASH. Our result show that hepatic Cp is remarkedly upregulated in individuals with NASH and the mouse NASH model. Hepatocyte-specific Cp ablation effectively attenuates the onset of dietary-induced NASH by decreasing lipid accumulation, curbing inflammation, mitigating fibrosis, and ameliorating liver damage. By employing transcriptomics and metabolomics approaches, we have discovered that hepatic deletion of Cp brings about remarkable restoration of bile acid (BA) metabolism during NASH. Hepatic deletion of Cp effectively remodels BA metabolism by upregulating Cyp7a1 and Cyp8b1, which subsequently leads to enhanced BA synthesis and notable alterations in BA profiles. In conclusion, our studies elucidate the crucial involvement of Cp in NASH, highlighting its significance as a promising therapeutic target for the treatment of this disease.
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Affiliation(s)
- Quanxin Jiang
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Ning Wang
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Sijia Lu
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Jie Xiong
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Yanmei Yuan
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Junli Liu
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Suzhen Chen
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
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6
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Jiayi H, Ziyuan T, Tianhua X, Mingyu Z, Yutong M, Jingyu W, Hongli Z, Li S. Copper homeostasis in chronic kidney disease and its crosstalk with ferroptosis. Pharmacol Res 2024; 202:107139. [PMID: 38484857 DOI: 10.1016/j.phrs.2024.107139] [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: 01/15/2024] [Revised: 03/05/2024] [Accepted: 03/11/2024] [Indexed: 03/27/2024]
Abstract
Chronic kidney disease (CKD) has become a global public health problem with high morbidity and mortality. Renal fibrosis can lead to end-stage renal disease (ESRD). However, there is still no effective treatment to prevent or delay the progression of CKD into ESRD. Therefore, exploring the pathogenesis of CKD is essential for preventing and treating CKD. There are a variety of trace elements in the human body that interact with each other within a complex regulatory network. Iron and copper are both vital trace elements in the body. They are critical for maintaining bodily functions, and the dysregulation of their metabolism can cause many diseases, including kidney disease. Ferroptosis is a new form of cell death characterized by iron accumulation and lipid peroxidation. Studies have shown that ferroptosis is closely related to kidney disease. However, the role of abnormal copper metabolism in kidney disease and its relationship with ferroptosis remains unclear. Here, our current knowledge regarding copper metabolism, its regulatory mechanism, and the role of abnormal copper metabolism in kidney diseases is summarized. In addition, we discuss the relationship between abnormal copper metabolism and ferroptosis to explore the possible pathogenesis and provide a potential therapeutic target for CKD.
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Affiliation(s)
- Huang Jiayi
- Department of Nephrology, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Tong Ziyuan
- China Medical University, Shenyang 110122, People's Republic of China
| | - Xu Tianhua
- Department of Nephrology, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Zhang Mingyu
- Department of Nephrology, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Ma Yutong
- Department of Nephrology, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China
| | - Wang Jingyu
- Renal Division, Peking University First Hospital, Beijing 100034, People's Republic of China
| | - Zhou Hongli
- Department of Nephrology, The First Hospital of Jinzhou Medical University, Jinzhou, Liaoning Province 110004, People's Republic of China
| | - Sun Li
- Department of Nephrology, The First Hospital of China Medical University, Shenyang 110001, People's Republic of China.
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7
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Qiu L, Hu M, Qin X, Song R, Sun Y, Wang X. Intracellular Regulation Limits the Response of Intestinal Ferroportin to Iron Status in Suckling Rats. Mol Nutr Food Res 2024; 68:e2300617. [PMID: 38366942 DOI: 10.1002/mnfr.202300617] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Revised: 11/02/2023] [Indexed: 02/19/2024]
Abstract
SCOPE Iron status is regulated via iron absorption as there is no active iron excretion. Divalent metal-ion transporter-1 (DMT1) and ferroportin (FPN) are two key proteins vital for iron absorption, but the regulation of them in suckling mammals differs from that in adults. This study aims to explore regulation of iron transporters under different iron conditions during suckling. METHODS AND RESULTS This study developed suckling rats under different iron conditions. Unexpectedly, unchanged FPN at different iron status are detected. Since FPN is the only known iron exporter for mammals, unchanged FPN limits iron exported into blood during suckling. Thus, factors regulating FPN at transcriptional, post-transcriptional, and post-translational levels are detected. Results showed that Fpn mRNA is upregulated, while micro RNA-485(miR-485) which could silence Fpn mRNA is upregulated at low iron status limiting translation of Fpn mRNA. Besides, serum hepcidin and liver Hamp mRNA are upregulated, but ring finger protein 217( Rnf217) mRNA remained unchanged at high iron status leading to FPN not downregulated as adults. CONCLUSIONS Overall, this study indicates that translational regulation limits intestinal FPN protein response to iron deficiency and Rnf217 cannot effectively mediate the degradation of FPN at high iron status, which provides a reference for maintaining iron homeostasis during suckling.
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Affiliation(s)
- Lili Qiu
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Mengxiao Hu
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Xiyu Qin
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Rui Song
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, 100083, China
| | - Yanan Sun
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100193, China
- Food Laboratory of Zhongyuan, Luohe, 462300, China
| | - Xiaoyu Wang
- College of Food Science & Nutritional Engineering, China Agricultural University, Beijing, 100083, China
- Key Laboratory of Precision Nutrition and Food Quality, Department of Nutrition and Health, China Agricultural University, Beijing, 100193, China
- Food Laboratory of Zhongyuan, Luohe, 462300, China
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8
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Himoto T, Masaki T. Current Trends on the Involvement of Zinc, Copper, and Selenium in the Process of Hepatocarcinogenesis. Nutrients 2024; 16:472. [PMID: 38398797 PMCID: PMC10892613 DOI: 10.3390/nu16040472] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/31/2024] [Accepted: 02/02/2024] [Indexed: 02/25/2024] Open
Abstract
Numerous nutritional factors increase the risk of hepatocellular carcinoma (HCC) development. The dysregulation of zinc, copper, and selenium homeostasis is associated with the occurrence of HCC. The impairment of the homeostasis of these essential trace elements results in oxidative stress, DNA damage, cell cycle progression, and angiogenesis, finally leading to hepatocarcinogenesis. These essential trace elements can affect the microenvironment in HCC. The carrier proteins for zinc and copper and selenium-containing enzymes play important roles in the prevention or progression of HCC. These trace elements enhance or alleviate the chemosensitivity of anticancer agents in patients with HCC. The zinc, copper, or selenium may affect the homeostasis of other trace elements with each other. Novel types of cell death including ferropotosis and cupropotosis are also associated with hepatocarcinogenesis. Therapeutic strategies for HCC that target these carrier proteins for zinc and copper or selenium-containing enzymes have been developed in in vitro and in vivo studies. The use of zinc-, copper- or selenium-nanoparticles has been considered as novel therapeutic agents for HCC. These results indicate that zinc, copper, and selenium may become promising therapeutic targets in patients with HCC. The clinical application of these agents is an urgent unmet requirement. This review article highlights the correlation between the dysregulation of the homeostasis of these essential trace elements and the development of HCC and summarizes the current trends on the roles of these essential trace elements in the pathogenesis of hepatocarcinogenesis.
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Affiliation(s)
- Takashi Himoto
- Department of Medical Technology, Kagawa Prefectural University of Health Sciences, 281-1, Hara, Mure-cho, Takamatsu 761-0123, Kagawa, Japan
| | - Tsutomu Masaki
- Department of Gastroenterology and Neurology, Faculty of Medicine, Kagawa University, 1750-1, Ikenobe, Miki-cho 761-0793, Kagawa, Japan
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9
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Ban XX, Wan H, Wan XX, Tan YT, Hu XM, Ban HX, Chen XY, Huang K, Zhang Q, Xiong K. Copper Metabolism and Cuproptosis: Molecular Mechanisms and Therapeutic Perspectives in Neurodegenerative Diseases. Curr Med Sci 2024; 44:28-50. [PMID: 38336987 DOI: 10.1007/s11596-024-2832-z] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2023] [Accepted: 12/17/2023] [Indexed: 02/12/2024]
Abstract
Copper is an essential trace element, and plays a vital role in numerous physiological processes within the human body. During normal metabolism, the human body maintains copper homeostasis. Copper deficiency or excess can adversely affect cellular function. Therefore, copper homeostasis is stringently regulated. Recent studies suggest that copper can trigger a specific form of cell death, namely, cuproptosis, which is triggered by excessive levels of intracellular copper. Cuproptosis induces the aggregation of mitochondrial lipoylated proteins, and the loss of iron-sulfur cluster proteins. In neurodegenerative diseases, the pathogenesis and progression of neurological disorders are linked to copper homeostasis. This review summarizes the advances in copper homeostasis and cuproptosis in the nervous system and neurodegenerative diseases. This offers research perspectives that provide new insights into the targeted treatment of neurodegenerative diseases based on cuproptosis.
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Affiliation(s)
- Xiao-Xia Ban
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, 430013, China
| | - Hao Wan
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, 430013, China
| | - Xin-Xing Wan
- Department of Endocrinology, Third Xiangya Hospital, Central South University, Changsha, 430013, China
| | - Ya-Ting Tan
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, 430013, China
| | - Xi-Min Hu
- Department of Dermatology, Xiangya Hospital, Central South University, Changsha, 430013, China
| | - Hong-Xia Ban
- Affiliated Hospital, Inner Mongolia Medical University, Hohhot, 010050, China
| | - Xin-Yu Chen
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, 430013, China
| | - Kun Huang
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, 430013, China
| | - Qi Zhang
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, 430013, China.
- Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, 571199, China.
| | - Kun Xiong
- Department of Human Anatomy and Neurobiology, School of Basic Medical Science, Central South University, Changsha, 430013, China.
- Key Laboratory of Emergency and Trauma of Ministry of Education, Hainan Medical University, Haikou, 571199, China.
- Hunan Key Laboratory of Ophthalmology, Changsha, 430013, China.
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10
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Gao J, Wu X, Huang S, Zhao Z, He W, Song M. Novel insights into anticancer mechanisms of elesclomol: More than a prooxidant drug. Redox Biol 2023; 67:102891. [PMID: 37734229 PMCID: PMC10518591 DOI: 10.1016/j.redox.2023.102891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2023] [Revised: 08/27/2023] [Accepted: 09/14/2023] [Indexed: 09/23/2023] Open
Abstract
As an essential micronutrient for humans, the metabolism of copper is fine-tuned by evolutionarily conserved homeostatic mechanisms. Copper toxicity occurs when its concentration exceeds a certain threshold, which has been exploited in the development of copper ionophores, such as elesclomol, for anticancer treatment. Elesclomol has garnered recognition as a potent anticancer drug and has been evaluated in numerous clinical trials. However, the mechanisms underlying elesclomol-induced cell death remain obscure. The discovery of cuproptosis, a novel form of cell death triggered by the targeted accumulation of copper in mitochondria, redefines the significance of elesclomol in cancer therapy. Here, we provide an overview of copper homeostasis and its associated pathological disorders, especially copper metabolism in carcinogenesis. We summarize our current knowledge of the tumor suppressive mechanisms of elesclomol, with emphasis on cuproptosis. Finally, we discuss the strategies that may contribute to better application of elesclomol in cancer therapy.
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Affiliation(s)
- Jialing Gao
- Institute of Precision Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
| | - Xiaoxue Wu
- Institute of Precision Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China
| | - Shuting Huang
- School of Public Health, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Ziyi Zhao
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China
| | - Weiling He
- Department of Gastrointestinal Surgery, The First Affiliated Hospital of Sun Yat-sen University, Sun Yat-sen University, Guangzhou, Guangdong, 510080, China; Department of Gastrointestinal Surgery, Xiang'an Hospital of Xiamen University, School of Medicine, Xiamen University, Xiamen, Fujian, 361000, China.
| | - Mei Song
- Institute of Precision Medicine, The First Affiliated Hospital of Sun Yat-Sen University, Sun Yat-Sen University, Guangzhou, Guangdong, 510080, China.
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11
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Wang K, Li S, Yang Z, Chen C, Fu Y, Du H, Sun H, Li J, Zhao Q, Du C. L-type lectin receptor-like kinase OsCORK1 as an important negative regulator confers copper stress tolerance in rice. JOURNAL OF HAZARDOUS MATERIALS 2023; 459:132214. [PMID: 37544174 DOI: 10.1016/j.jhazmat.2023.132214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Revised: 07/24/2023] [Accepted: 08/02/2023] [Indexed: 08/08/2023]
Abstract
Copper (Cu) is vital for plant growth but becomes toxic in excess, posing potential threats to human health. Although receptor-like kinases (RLKs) have been studied in plant response to abiotic stresses, their roles in Cu stress response remain poorly understood. Therefore, we aimed to evaluate Cu toxicity effects on rice and elucidate its potential molecular mechanisms. Specifically, rice lectin-type RLK OsCORK1 (Copper-response receptor-like kinase 1) function in Cu stress response was investigated. RNA sequencing and expression assays revealed that OsCORK1 is mainly expressed in roots and leaves, and its expression was significantly induced by Cu stress time- and dose-dependently. Kinase activity assays demonstrated OsCORK1 as a Mn2+-preferred functional kinase. Genetically, OsCORK1 gene-edited mutants exhibited increased tolerance to Cu stress and reduced Cu accumulation compared to the wild type (WT). Conversely, OsCORK1 overexpression compromised the Cu stress tolerance observed in OsCORK1 gene-edited mutants. OsCORK1 gene-edited mutants slightly damaged the root tips compared to the WT under Cu stress. Furthermore, OsCORK1 was demonstrated to modulate Cu stress tolerance by mainly altering cell wall components, particularly lignin, in rice. Overall, OsCORK1 is an important negative regulator of Cu stress tolerance, providing a potential gene target to reduce Cu pollution in rice production.
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Affiliation(s)
- Ke Wang
- Key Laboratory of Henan Rice Biology, Collaborative Innovation Center of Henan Grain Crops, Post-doctoral station in Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Shen Li
- Key Laboratory of Henan Rice Biology, Collaborative Innovation Center of Henan Grain Crops, Post-doctoral station in Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Zhaoyan Yang
- Office of Information Management, Henan Agricultural University, Zhengzhou 450046, China
| | - Cong Chen
- Key Laboratory of Henan Rice Biology, Collaborative Innovation Center of Henan Grain Crops, Post-doctoral station in Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Yihan Fu
- Key Laboratory of Henan Rice Biology, Collaborative Innovation Center of Henan Grain Crops, Post-doctoral station in Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Haitao Du
- Key Laboratory of Henan Rice Biology, Collaborative Innovation Center of Henan Grain Crops, Post-doctoral station in Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Hongzheng Sun
- Key Laboratory of Henan Rice Biology, Collaborative Innovation Center of Henan Grain Crops, Post-doctoral station in Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Junzhou Li
- Key Laboratory of Henan Rice Biology, Collaborative Innovation Center of Henan Grain Crops, Post-doctoral station in Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China
| | - Quanzhi Zhao
- Key Laboratory of Henan Rice Biology, Collaborative Innovation Center of Henan Grain Crops, Post-doctoral station in Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China; Rice Industrial Technology Research Institute, Guizhou University, Guiyang 550025, China
| | - Changqing Du
- Key Laboratory of Henan Rice Biology, Collaborative Innovation Center of Henan Grain Crops, Post-doctoral station in Crop Science, College of Agronomy, Henan Agricultural University, Zhengzhou 450046, China.
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12
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Evcan E, Gulec S. Comparison of apical and basolateral Cu treatment for iron-related gene regulation during deferoxamine induced iron deficiency. GENES & NUTRITION 2022; 17:16. [PMID: 36494833 PMCID: PMC9733202 DOI: 10.1186/s12263-022-00717-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/22/2021] [Accepted: 11/10/2022] [Indexed: 12/13/2022]
Abstract
BACKGROUND Intestinal copper transporter (Atp7a) mutant-brindled mice with systemic Cu deficiency had elevated Cu levels in enterocyte cells without any perturbation of iron-regulating genes, suggesting that blood Cu level might be important for intestinal iron homeostasis during iron deficiency (ID). We hypothesized that the blood Cu level and polarization (apical and basolateral) of enterocyte cells might be important regulators for the compensatory response on the regulation of genes in enterocyte cells during iron deficiency. METHODS We grew Caco-2 cells on a bicameral cell culture plate to mimic the human intestine system and on a regular tissue culture plate. Iron deficiency was induced by deferoxamine (DFO). The cells were treated with Cu and Cu with Fe following mRNA expressions of DMT1, FPN, TFR, and ANKRD37 were analyzed. RESULTS Our main finding was that basolateral treatment of Cu significantly reduced mRNA expressions of iron-regulated genes, including DMT1, FPN, TFR, and ANKRD37, compared to DFO-treated and DFO with apical Cu-treated groups in both bicameral and regular tissue culture plates. CONCLUSIONS Cu level in the basolateral side of Caco-2 cells significantly influenced the intracellular gene regulation in DFO-induced iron-deficient condition, and polarization of the cells might be important factor gene regulation in enterocyte cells.
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Affiliation(s)
- Ezgi Evcan
- grid.419609.30000 0000 9261 240Xİzmir Institute of Technology, Faculty of Engineering, Department of Food Engineering, Molecular Nutrition and Human Physiology Laboratory, Urla, 35430 İzmir, Turkey
| | - Sukru Gulec
- grid.419609.30000 0000 9261 240Xİzmir Institute of Technology, Faculty of Engineering, Department of Food Engineering, Molecular Nutrition and Human Physiology Laboratory, Urla, 35430 İzmir, Turkey
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13
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Xie L, Yuan Y, Xu S, Lu S, Gu J, Wang Y, Wang Y, Zhang X, Chen S, Li J, Lu J, Sun H, Hu R, Piao H, Wang W, Wang C, Wang J, Li N, White MF, Han L, Jia W, Miao J, Liu J. Downregulation of hepatic ceruloplasmin ameliorates NAFLD via SCO1-AMPK-LKB1 complex. Cell Rep 2022; 41:111498. [PMID: 36261001 PMCID: PMC10153649 DOI: 10.1016/j.celrep.2022.111498] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 06/29/2022] [Accepted: 09/21/2022] [Indexed: 11/17/2022] Open
Abstract
Copper deficiency has emerged to be associated with various lipid metabolism diseases, including non-alcoholic fatty liver disease (NAFLD). However, the mechanisms that dictate the association between copper deficiency and metabolic diseases remain obscure. Here, we reveal that copper restoration caused by hepatic ceruloplasmin (Cp) ablation enhances lipid catabolism by promoting the assembly of copper-load SCO1-LKB1-AMPK complex. Overnutrition-mediated Cp elevation results in hepatic copper loss, whereas Cp ablation restores copper content to the normal level without eliciting detectable hepatotoxicity and ameliorates NAFLD in mice. Mechanistically, SCO1 constitutively interacts with LKB1 even in the absence of copper, and copper-loaded SCO1 directly tethers LKB1 to AMPK, thereby activating AMPK and consequently promoting mitochondrial biogenesis and fatty acid oxidation. Therefore, this study reveals a mechanism by which copper, as a signaling molecule, improves hepatic lipid catabolism, and it indicates that targeting copper-SCO1-AMPK signaling pathway ameliorates NAFLD development by modulating AMPK activity.
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Affiliation(s)
- Liping Xie
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Yanmei Yuan
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Simiao Xu
- Division of Endocrinology, Boston Children's Hospital, Boston, MA 02215, USA; Division of Endocrinology, Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Branch of National Clinical Research Center for Metabolic Disease, Wuhan, Hubei 430030, China
| | - Sijia Lu
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Jinyang Gu
- Department of Transplantation, Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200042, China
| | - Yanping Wang
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Yibing Wang
- School of Kinesiology, Shanghai University of Sports, Shanghai 200438, China
| | - Xianjing Zhang
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Suzhen Chen
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Jian Li
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Junxi Lu
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Honglin Sun
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Ruixiang Hu
- Division of Endocrinology, Boston Children's Hospital, Boston, MA 02215, USA; Department of Gastrointestinal Surgery, the First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510630, China
| | - Hailong Piao
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Wen Wang
- CAS Key Laboratory of Separation Science for Analytical Chemistry, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, Liaoning 116023, China
| | - Cunchuan Wang
- Department of Gastrointestinal Surgery, the First Affiliated Hospital of Jinan University, Guangzhou, Guangdong 510630, China
| | - Jing Wang
- State Key Laboratory of Natural and Biomimetic Drugs Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Na Li
- State Key Laboratory of Natural and Biomimetic Drugs Department of Chemical Biology, School of Pharmaceutical Sciences, Peking University, Beijing 100191, China
| | - Morris F White
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA
| | - Liu Han
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Weiping Jia
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China
| | - Ji Miao
- Division of Endocrinology, Boston Children's Hospital, Boston, MA 02215, USA; Department of Pediatrics, Harvard Medical School, Boston, MA 02115, USA.
| | - Junli Liu
- Shanghai Diabetes Institute, Department of Endocrinology and Metabolism, Shanghai Key Laboratory of Diabetes Mellitus, Shanghai Sixth People's Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai 200233, China.
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14
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Ma C, Han L, Zhu Z, Heng Pang C, Pan G. Mineral metabolism and ferroptosis in non-alcoholic fatty liver diseases. Biochem Pharmacol 2022; 205:115242. [PMID: 36084708 DOI: 10.1016/j.bcp.2022.115242] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2022] [Revised: 08/28/2022] [Accepted: 08/30/2022] [Indexed: 11/02/2022]
Abstract
Nonalcoholic fatty liver disease (NAFLD) has become the most prevalent chronic liver disease worldwide. Minerals including iron, copper, zinc, and selenium, fulfil an essential role in various biochemical processes. Moreover, the identification of ferroptosis and cuproptosis further underscores the importance of intracellular mineral homeostasis. However, perturbation of minerals has been frequently reported in patients with NAFLD and related diseases. Interestingly, studies have attempted to establish an association between mineral disorders and NAFLD pathological features, including oxidative stress, mitochondrial dysfunction, inflammatory response, and fibrogenesis. In this review, we aim to provide an overview of the current understanding of mineral metabolism (i.e., absorption, utilization, and transport) and mineral interactions in the pathogenesis of NAFLD. More importantly, this review highlights potential therapeutic strategies, challenges, future directions for targeting mineral metabolism in the treatment of NAFLD.
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Affiliation(s)
- Chenhui Ma
- Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, China; Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Li Han
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China
| | - Zheying Zhu
- Division of Molecular Therapeutics & Formulation, School of Pharmacy, The University of Nottingham, University Park Campus, Nottingham NG7 2RD, UK.
| | - Cheng Heng Pang
- Department of Chemical and Environmental Engineering, University of Nottingham Ningbo China, Ningbo 315100, China.
| | - Guoyu Pan
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China; University of Chinese Academy of Sciences, Beijing 100049, China.
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15
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Ferroptosis as a mechanism of non-ferrous metal toxicity. Arch Toxicol 2022; 96:2391-2417. [PMID: 35727353 DOI: 10.1007/s00204-022-03317-y] [Citation(s) in RCA: 37] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/11/2022] [Indexed: 11/02/2022]
Abstract
Ferroptosis is a recently discovered form of regulated cell death, implicated in multiple pathologies. Given that the toxicity elicited by some metals is linked to alterations in iron metabolism and induction of oxidative stress and lipid peroxidation, ferroptosis might be involved in such toxicity. Although direct evidence is insufficient, certain pioneering studies have demonstrated a crosstalk between metal toxicity and ferroptosis. Specifically, the mechanisms underlying metal-induced ferroptosis include induction of ferritinophagy, increased DMT-1 and TfR cellular iron uptake, mitochondrial dysfunction and mitochondrial reactive oxygen species (mitoROS) generation, inhibition of Xc-system and glutathione peroxidase 4 (GPX4) activity, altogether resulting in oxidative stress and lipid peroxidation. In addition, there is direct evidence of the role of ferroptosis in the toxicity of arsenic, cadmium, zinc, manganese, copper, and aluminum exposure. In contrast, findings on the impact of cobalt and nickel on ferroptosis are scant and nearly lacking altogether for mercury and especially lead. Other gaps in the field include limited studies on the role of metal speciation in ferroptosis and the critical cellular targets. Although further detailed studies are required, it seems reasonable to propose even at this early stage that ferroptosis may play a significant role in metal toxicity, and its modulation may be considered as a potential therapeutic tool for the amelioration of metal toxicity.
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16
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Kochoni E, Aharchaou I, Ohlund L, Rosabal M, Sleno L, Fortin C. New insights in copper handling strategies in the green alga Chlamydomonas reinhardtii under low-iron condition. Metallomics 2022; 14:6582230. [PMID: 35524697 DOI: 10.1093/mtomcs/mfac033] [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: 10/20/2021] [Accepted: 04/14/2022] [Indexed: 11/13/2022]
Abstract
Copper (Cu) is a redox-active transition element critical to various metabolic processes. These functions are accomplished in tandem with Cu binding ligands, mainly proteins. The main goal of this work was to understand the mechanisms that govern the intracellular fate of Cu in the freshwater green alga, Chlamydomonas reinhardtii, and more specifically to understand the mechanisms underlying Cu detoxification by algal cells in low-Fe conditions. We show that Cu accumulation was up to 51-fold greater for algae exposed to Cu in low-Fe medium as compared to the replete-Fe growth medium. Using the stable isotope 65Cu as a tracer, we studied the subcellular distribution of Cu within the various cell compartments of C. reinhardtii. These data were coupled with metallomic and proteomic approaches to identify potential Cu-binding ligands in the heat-stable protein and peptide fractions of the cytosol. Cu was mostly found in the organelles (78%), and in the heat-stable proteins and peptides (21%) fractions. The organelle fraction appeared to also be the main target compartment of Cu accumulation in Fe-depleted cells. As Fe levels in the medium were shown to influence Cu homeostasis, we found that C. reinhardtii can cope with this additional stress by utilizing different Cu-binding ligands. Indeed, in addition to expected Cu-binding ligands such as glutathione and phytochelatins, 25 proteins were detected that may also play a role in the Cu detoxification processes in C. reinhardtii. Our results shed new light on the coping mechanisms of C. reinhardtii when exposed to environmental conditions that induce high rates of Cu accumulation.
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Affiliation(s)
- Emeric Kochoni
- Institut national de la recherche scientifique, Centre Eau Terre Environnement, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada.,EcotoQ, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada
| | - Imad Aharchaou
- Institut national de la recherche scientifique, Centre Eau Terre Environnement, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada.,EcotoQ, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada
| | - Leanne Ohlund
- Département de Chimie, Université du Québec à Montréal (UQAM), 2101, rue Jeanne-Mance, Montréal, QC, H2×2J6, Canada
| | - Maikel Rosabal
- EcotoQ, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada.,Département des Sciences biologiques, Université du Québec à Montréal (UQAM), 141 Avenue du Président-Kennedy, Montréal, QC, H2×1Y4, Canada
| | - Lekha Sleno
- EcotoQ, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada.,Département de Chimie, Université du Québec à Montréal (UQAM), 2101, rue Jeanne-Mance, Montréal, QC, H2×2J6, Canada
| | - Claude Fortin
- Institut national de la recherche scientifique, Centre Eau Terre Environnement, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada.,EcotoQ, 490, rue de la Couronne, Québec, QC, G1K 9A9, Canada
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17
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Grechnikova M, Arbon D, Ženíšková K, Malych R, Mach J, Krejbichová L, Šimáčková A, Sutak R. Elucidation of iron homeostasis in Acanthamoeba castellanii. Int J Parasitol 2022; 52:497-508. [PMID: 35533729 DOI: 10.1016/j.ijpara.2022.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 03/21/2022] [Accepted: 03/27/2022] [Indexed: 11/25/2022]
Abstract
Acanthamoeba castellanii is a ubiquitously distributed amoeba that can be found in soil, dust, natural and tap water, air conditioners, hospitals, contact lenses and other environments. It is an amphizoic organism that can cause granulomatous amoebic encephalitis, an infrequent fatal disease of the central nervous system, and amoebic keratitis, a severe corneal infection that can lead to blindness. These diseases are extremely hard to treat; therefore, a more comprehensive understanding of this pathogen's metabolism is essential for revealing potential therapeutic targets. To propagate successfully in human tissues, the parasites must resist the iron depletion caused by nutritional immunity. The aim of our study is to elucidate the mechanisms underlying iron homeostasis in A. castellanii. Using a comparative whole-cell proteomic analysis of cells grown under different degrees of iron availability, we identified the primary proteins involved in Acanthamoeba iron acquisition. Our results suggest a two-step reductive mechanism of iron acquisition by a ferric reductase from the STEAP family and a divalent metal transporter from the NRAMP family. Both proteins are localized to the membranes of acidified digestive vacuoles where endocytosed medium and bacteria are trafficked. The expression levels of these proteins are significantly higher under iron-limited conditions, which allows Acanthamoeba to increase the efficiency of iron uptake despite the observed reduced pinocytosis rate. We propose that excessive iron gained while grown under iron-rich conditions is removed from the cytosol into the vacuoles by an iron transporter homologous to VIT/Ccc1 proteins. Additionally, we identified a novel protein that may participate in iron uptake regulation, the overexpression of which leads to increased iron acquisition.
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Affiliation(s)
- Maria Grechnikova
- Department of Parasitology, Charles University, Faculty of Science, BIOCEV, Průmyslová 595, 252 50 Vestec, Czech Republic
| | - Dominik Arbon
- Department of Parasitology, Charles University, Faculty of Science, BIOCEV, Průmyslová 595, 252 50 Vestec, Czech Republic
| | - Kateřina Ženíšková
- Department of Parasitology, Charles University, Faculty of Science, BIOCEV, Průmyslová 595, 252 50 Vestec, Czech Republic
| | - Ronald Malych
- Department of Parasitology, Charles University, Faculty of Science, BIOCEV, Průmyslová 595, 252 50 Vestec, Czech Republic
| | - Jan Mach
- Department of Parasitology, Charles University, Faculty of Science, BIOCEV, Průmyslová 595, 252 50 Vestec, Czech Republic
| | - Lucie Krejbichová
- Department of Parasitology, Charles University, Faculty of Science, BIOCEV, Průmyslová 595, 252 50 Vestec, Czech Republic
| | - Aneta Šimáčková
- Department of Parasitology, Charles University, Faculty of Science, BIOCEV, Průmyslová 595, 252 50 Vestec, Czech Republic
| | - Robert Sutak
- Department of Parasitology, Charles University, Faculty of Science, BIOCEV, Průmyslová 595, 252 50 Vestec, Czech Republic.
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18
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Guo L, Zhang D, Tang W, Dong Z, Zhang Y, Wang S, Yin Y, Wan D. Correlations of gestational hemoglobin level, placental trace elements content, and reproductive performances in pregnant sows. J Anim Sci 2022; 100:6503612. [PMID: 35022729 PMCID: PMC8903142 DOI: 10.1093/jas/skac010] [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: 10/13/2021] [Accepted: 01/10/2022] [Indexed: 01/13/2023] Open
Abstract
The iron status of sows has a great influence on reproductive performance. Iron deficiency reduces reproductive performance and newborn piglet survival rate of sow. The hemoglobin is a potential predictor for the iron status of sows and is convenient for rapid detection in pig farms. However, the relationship between iron status, hemoglobin, placental trace elements, and reproductive performance remains unclear. In this study, the hemoglobin and reproductive performance of more than 500 sows with first to sixth parities at different gestation stages (25, 55, 75, 95, and 110 d of gestation) in two large-scale sow farms were collected, and the content of placental Fe, Zn, Mn, and Cu was analyzed. The results show that hemoglobin levels of sows during pregnancy (days 75, 95, and 110) decreased significantly (P < 0.001). As the parity increases, the hemoglobin levels of sows at days 25 and 55 of gestation and placental mineral element contents including Fe, Zn, Mn, and Cu at delivery decreased (P < 0.05), while the litter size, birth alive, and litter weights increased gradually (P < 0.001). Furthermore, hemoglobin during pregnancy had a negative linear correlation with litter weight and average weight (P < 0.05), and higher hemoglobin at day 25 of gestation may reduce the number of stillbirths (P = 0.05), but higher hemoglobin at day 110 of gestation may tend to be a benefit for the birth (P = 0.01). And there was a significant positive linear correlation between hemoglobin at day 110 of gestation and placental Fe and Mn levels (P = 0.002, P = 0.013). There was also a significant positive linear correlation among Fe, Zn, Mn, and Cu in the placenta (P < 0.001). The levels of Fe, Zn, and Mn in the placental at delivery were positively related to the average weight of the fetus (P = 0.048, P = 0.027, P = 0.047), and placental Cu was linearly correlated with litter size (P = 0.029). Our research revealed that the requirements for iron during gestation were varied in different gestation periods and parities. The feeds should be adjusted according to the gestation periods, parities, or iron status to meet the iron requirements of sows and fetal pigs.
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Affiliation(s)
- Liu Guo
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China,University of Chinese Academy of Sciences, Beijing 101408, China
| | - Dongming Zhang
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China
| | - Wenjie Tang
- Animal Breeding and Genetics Key Laboratory of Sichuan Province, Livestock and Poultry Biological Products Key Laboratory of Sichuan Province, Sichuan Animal Science Academy, Chengdu, Sichuan 610066, China
| | - Zhenglin Dong
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China
| | - Yawei Zhang
- Changsha Xinjia Bio-Engineering Co., Ltd., Changsha, Hunan 410000, China
| | - Shangchu Wang
- Changsha Xinjia Bio-Engineering Co., Ltd., Changsha, Hunan 410000, China
| | - Yulong Yin
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China,University of Chinese Academy of Sciences, Beijing 101408, China
| | - Dan Wan
- Laboratory of Animal Nutritional Physiology and Metabolic Process, Key Laboratory of Agro-ecological Processes in Subtropical Region, Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha, Hunan 410125, China,Corresponding author:
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19
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Liu Z, Wang M, Zhang C, Zhou S, Ji G. Molecular Functions of Ceruloplasmin in Metabolic Disease Pathology. Diabetes Metab Syndr Obes 2022; 15:695-711. [PMID: 35264864 PMCID: PMC8901420 DOI: 10.2147/dmso.s346648] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/28/2021] [Accepted: 02/04/2022] [Indexed: 12/12/2022] Open
Abstract
Ceruloplasmin (CP) is a multicopper oxidase and antioxidant that is mainly produced in the liver. CP not only plays a crucial role in the metabolic balance of copper and iron through its oxidase function but also exhibits antioxidant activity. In addition, CP is an acute-phase protein. In addition to being associated with aceruloplasminemia and neurodegenerative diseases such as Wilson's disease, Alzheimer's disease, and Parkinson's disease, CP also plays an important role in metabolic diseases, which are caused by metabolic disorders and vigorous metabolism, mainly including diabetes, obesity, hyperlipidemia, etc. Based on the physiological functions of CP, we provide an overview of the association of type 2 diabetes, obesity, hyperlipidemia, coronary heart disease, CP oxidative stress, inflammation, and metabolism of copper and iron. Studies have shown that metabolic diseases are closely related to systemic inflammation, oxidative stress, and disorders of copper and iron metabolism. Therefore, we conclude that CP, which can reduce the formation of free radicals in tissues, can be induced during inflammation and infection, and can correct the metabolic disorder of copper and iron, has protective and diagnostic effects on metabolic diseases.
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Affiliation(s)
- Zhidong Liu
- Department of Internal Medicine of Traditional Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, People’s Republic of China
| | - Miao Wang
- Department of Internal Medicine of Traditional Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, People’s Republic of China
| | - Chunbo Zhang
- School of Pharmacy, Nanchang University, Nanchang, Jiangxi, 330031, People’s Republic of China
| | - Shigao Zhou
- Department of Internal Medicine of Traditional Chinese Medicine, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, People’s Republic of China
| | - Guang Ji
- Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, People’s Republic of China
- Correspondence: Guang Ji, Institute of Digestive Diseases, Longhua Hospital, Shanghai University of Traditional Chinese Medicine, 725 South Wanping Road, Shanghai, 200032, People’s Republic of China, Tel +86 18156416071, Fax +86 21-64385700, Email
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20
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Smethurst DGJ, Shcherbik N. Interchangeable utilization of metals: New perspectives on the impacts of metal ions employed in ancient and extant biomolecules. J Biol Chem 2021; 297:101374. [PMID: 34732319 PMCID: PMC8633580 DOI: 10.1016/j.jbc.2021.101374] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 10/25/2021] [Accepted: 10/28/2021] [Indexed: 02/08/2023] Open
Abstract
Metal ions provide considerable functionality across biological systems, and their utilization within biomolecules has adapted through changes in the chemical environment to maintain the activity they facilitate. While ancient earth's atmosphere was rich in iron and manganese and low in oxygen, periods of atmospheric oxygenation significantly altered the availability of certain metal ions, resulting in ion replacement within biomolecules. This adaptation mechanism has given rise to the phenomenon of metal cofactor interchangeability, whereby contemporary proteins and nucleic acids interact with multiple metal ions interchangeably, with different coordinated metals influencing biological activity, stability, and toxic potential. The ability of extant organisms to adapt to fluctuating metal availability remains relevant in a number of crucial biomolecules, including the superoxide dismutases of the antioxidant defense systems and ribonucleotide reductases. These well-studied and ancient enzymes illustrate the potential for metal interchangeability and adaptive utilization. More recently, the ribosome has also been demonstrated to exhibit interchangeable interactions with metal ions with impacts on function, stability, and stress adaptation. Using these and other examples, here we review the biological significance of interchangeable metal ions from a new angle that combines both biochemical and evolutionary viewpoints. The geochemical pressures and chemical properties that underlie biological metal utilization are discussed in the context of their impact on modern disease states and treatments.
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Affiliation(s)
- Daniel G J Smethurst
- Department for Cell Biology and Neuroscience, School of Osteopathic Medicine, Rowan University, Stratford, New Jersey, USA.
| | - Natalia Shcherbik
- Department for Cell Biology and Neuroscience, School of Osteopathic Medicine, Rowan University, Stratford, New Jersey, USA.
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21
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Giordano G, Napolitano M, Di Battista V, Lucchesi A. Oral high-dose sucrosomial iron vs intravenous iron in sideropenic anemia patients intolerant/refractory to iron sulfate: a multicentric randomized study. Ann Hematol 2021; 100:2173-2179. [PMID: 33263170 PMCID: PMC8357646 DOI: 10.1007/s00277-020-04361-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2020] [Accepted: 11/23/2020] [Indexed: 01/01/2023]
Abstract
Iron deficiency anemia is among the most frequent causes of disability. Intravenous iron is the quickest way to correct iron deficiency, bypassing the bottleneck of iron intestinal absorption, the only true mechanism of iron balance regulation in human body. Intravenous iron administration is suggested in patients who are refractory/intolerant to oral iron sulfate. However, the intravenous way of iron administration requires several precautions; as the in-hospital administration requires a resuscitation service, as imposed in Europe by the European Medicine Agency, it is very expensive and negatively affects patient's perceived quality of life. A new oral iron formulation, Sucrosomial iron, bypassing the normal way of absorption, seems to be cost-effective in correcting iron deficiency anemia at doses higher than those usually effective with other oral iron formulations. In this multicentric randomized study, we analyze the cost-effectiveness of intravenous sodium ferrigluconate vs oral Sucrosomial iron in patients with iron deficiency anemia refractory/intolerant to oral iron sulfate without other interfering factors on iron absorption.
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Affiliation(s)
- Giulio Giordano
- Division of Internal Medicine, Hematology Service, Regional Hospital "A. Cardarelli", Campobasso, Italy
| | - Mariasanta Napolitano
- Department of Health Promotion, Mother and Child Care, Internal Medicine and Medical Specialties (PROMISE), Haematology Unit, University Hospital "P. Giaccone", University of Palermo, Via del Vespro 127, 90127, Palermo, Italy.
| | - Valeria Di Battista
- Hematology Unit, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
| | - Alessandro Lucchesi
- Hematology Unit, Istituto Scientifico Romagnolo per lo Studio e la Cura dei Tumori (IRST) IRCCS, Meldola, Italy
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22
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Martín Giménez VM, Bergam I, Reiter RJ, Manucha W. Metal ion homeostasis with emphasis on zinc and copper: Potential crucial link to explain the non-classical antioxidative properties of vitamin D and melatonin. Life Sci 2021; 281:119770. [PMID: 34197883 DOI: 10.1016/j.lfs.2021.119770] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2021] [Revised: 06/11/2021] [Accepted: 06/21/2021] [Indexed: 12/21/2022]
Abstract
Metal ion homeostasis is an essential physiological mechanism necessary for achieving an adequate balance of these ions' concentrations in the different cellular compartments. This fact is of great importance because both an excess and a deficiency of cellular metal ion levels are usually equally harmful due to the exacerbated increase in oxidative stress that may occur in both cases. Metal ion homeostasis ensures an equilibrium among multiple functions associated with the body's antioxidative defense network controlled by metallic micronutrients such as zinc and copper, some of the central regulators of redox processes. These micronutrients significantly modulate the activity of some isoforms of superoxide dismutase (SOD) and other enzymes such as metallothioneins (MTs) and ceruloplasmin (CP), which are directly or indirectly involved in the regulation of redox homeostasis. Although it is well known that both melatonin (MEL) and vitamin D have important roles as natural antioxidants, often some of these effects are related to their actions on antioxidative processes dependent on metal ions. Thus, in addition to their classical antioxidative properties usually associated with mitochondrial effects, it is known that MEL and vitamin D modulate the expression and activity of Cu/Zn-dependent SOD isoforms, MTs and CP; function as copper chelators and regulate genomic and non-genomic mechanisms related to the zinc transport. This review summarizes the main findings related to the crucial participation of zinc and copper in physiological antioxidative status and their relationship with the non-classical antioxidant effects of MEL and vitamin D, suggesting a potential synergism among these four micronutrients.
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Affiliation(s)
- Virna M Martín Giménez
- Instituto de Investigaciones en Ciencias Químicas, Facultad de Ciencias Químicas y Tecnológicas, Universidad Católica de Cuyo, Sede San Juan, Argentina
| | - Ivana Bergam
- CROATIA Osiguranje Pension Company for Voluntary Pension Fund Management D.O.O., Zagreb, Croatia
| | - Russel J Reiter
- Department of Cell Systems and Anatomy, UT Health San Antonio, Long School of Medicine, San Antonio, TX, USA
| | - Walter Manucha
- Laboratorio de Farmacología Experimental Básica y Traslacional, Área de Farmacología, Departamento de Patología, Facultad de Ciencias Médicas, Universidad Nacional de Cuyo, Mendoza, Argentina; Instituto de Medicina y Biología Experimental de Cuyo, Consejo Nacional de Investigación Científica y Tecnológica (IMBECU-CONICET), Argentina.
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23
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Collins JF. Copper nutrition and biochemistry and human (patho)physiology. ADVANCES IN FOOD AND NUTRITION RESEARCH 2021; 96:311-364. [PMID: 34112357 DOI: 10.1016/bs.afnr.2021.01.005] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The essential trace mineral copper plays important roles in human physiology and pathophysiology. Disruption of copper homeostasis may underlie the development of ischemic heart disease, and connective tissue and neurodegenerative disorders. Copper also likely participates in the host response to bacterial infection and is further implicated more broadly in regulating immunity. Recent studies further associate copper with disruption of lipid homeostasis, as is frequently seen in, for example, non-alcoholic fatty liver disease (NAFLD). Moreover, continuing investigation of copper chaperones has revealed new roles for these intracellular copper-binding proteins. Despite these (and many other) significant advances, many questions related to copper biology remain unanswered. For example, what are the most sensitive and specific biomarkers of copper status, and which ones are useful in marginal (or "sub-clinical" copper deficiency)? Further research on this topic is required to inform future investigations of copper metabolism in humans (so the copper status of study participants can be fully appreciated). Also, are current recommendations for copper intake adequate? Recent studies suggest that overt copper deficiency is more common than once thought, and further, some have suggested that the copper RDAs for adults may be too low. Additional human balance and interventional studies are necessary and could provide the impetus for reconsidering the copper RDAs in the future. These and myriad other unresolved aspects of copper nutrition will undoubtedly be the focus of future investigation.
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Affiliation(s)
- James F Collins
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL, United States.
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24
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ATP7A-Regulated Enzyme Metalation and Trafficking in the Menkes Disease Puzzle. Biomedicines 2021; 9:biomedicines9040391. [PMID: 33917579 PMCID: PMC8067471 DOI: 10.3390/biomedicines9040391] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2021] [Revised: 04/01/2021] [Accepted: 04/02/2021] [Indexed: 12/12/2022] Open
Abstract
Copper is vital for numerous cellular functions affecting all tissues and organ systems in the body. The copper pump, ATP7A is critical for whole-body, cellular, and subcellular copper homeostasis, and dysfunction due to genetic defects results in Menkes disease. ATP7A dysfunction leads to copper deficiency in nervous tissue, liver, and blood but accumulation in other tissues. Site-specific cellular deficiencies of copper lead to loss of function of copper-dependent enzymes in all tissues, and the range of Menkes disease pathologies observed can now be explained in full by lack of specific copper enzymes. New pathways involving copper activated lysosomal and steroid sulfatases link patient symptoms usually related to other inborn errors of metabolism to Menkes disease. Additionally, new roles for lysyl oxidase in activation of molecules necessary for the innate immune system, and novel adapter molecules that play roles in ERGIC trafficking of brain receptors and other proteins, are emerging. We here summarize the current knowledge of the roles of copper enzyme function in Menkes disease, with a focus on ATP7A-mediated enzyme metalation in the secretory pathway. By establishing mechanistic relationships between copper-dependent cellular processes and Menkes disease symptoms in patients will not only increase understanding of copper biology but will also allow for the identification of an expanding range of copper-dependent enzymes and pathways. This will raise awareness of rare patient symptoms, and thus aid in early diagnosis of Menkes disease patients.
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25
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Dietary Iron Intake in Excess of Requirements Impairs Intestinal Copper Absorption in Sprague Dawley Rat Dams, Causing Copper Deficiency in Suckling Pups. Biomedicines 2021; 9:biomedicines9040338. [PMID: 33801587 PMCID: PMC8065423 DOI: 10.3390/biomedicines9040338] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Revised: 03/13/2021] [Accepted: 03/23/2021] [Indexed: 12/21/2022] Open
Abstract
Physiologically relevant iron-copper interactions have been frequently documented. For example, excess enteral iron inhibits copper absorption in laboratory rodents and humans. Whether this also occurs during pregnancy and lactation, when iron supplementation is frequently recommended, is, however, unknown. Here, the hypothesis that high dietary iron will perturb copper homeostasis in pregnant and lactating dams and their pups was tested. We utilized a rat model of iron-deficiency/iron supplementation during pregnancy and lactation to assess this possibility. Rat dams were fed low-iron diets early in pregnancy, and then switched to one of 5 diets with normal (1×) to high iron (20×) until pups were 14 days old. Subsequently, copper and iron homeostasis, and intestinal copper absorption (by oral, intragastric gavage with 64Cu), were assessed. Copper depletion/deficiency occurred in the dams and pups as dietary iron increased, as evidenced by decrements in plasma ceruloplasmin (Cp) and superoxide dismutase 1 (SOD1) activity, depletion of hepatic copper, and liver iron loading. Intestinal copper transport and tissue 64Cu accumulation were lower in dams consuming excess iron, and tissue 64Cu was also low in suckling pups. In some cases, physiological disturbances were noted when dietary iron was only ~3-fold in excess, while for others, effects were observed when dietary iron was 10–20-fold in excess. Excess enteral iron thus antagonizes the absorption of dietary copper, causing copper depletion in dams and their suckling pups. Low milk copper is a likely explanation for copper depletion in the pups, but experimental proof of this awaits future experimentation.
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26
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Bernal M, Krämer U. Involvement of Arabidopsis Multi-Copper Oxidase-Encoding LACCASE12 in Root-to-Shoot Iron Partitioning: A Novel Example of Copper-Iron Crosstalk. FRONTIERS IN PLANT SCIENCE 2021; 12:688318. [PMID: 34707625 PMCID: PMC8544784 DOI: 10.3389/fpls.2021.688318] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 08/23/2021] [Indexed: 05/17/2023]
Abstract
Numerous central biological processes depend on the participation of the essential elements iron (Fe) or copper (Cu), including photosynthesis, respiration, cell wall remodeling and oxidative stress protection. Yet, both Fe and Cu metal cations can become toxic when accumulated in excess. Because of the potent ligand-binding and redox chemistries of these metals, there is a need for the tight and combined homeostatic control of their uptake and distribution. Several known examples pinpoint an inter-dependence of Fe and Cu homeostasis in eukaryotes, mostly in green algae, yeast and mammals, but this is less well understood in multicellular plants to date. In Arabidopsis, Cu deficiency causes secondary Fe deficiency, and this is associated with reduced in vitro ferroxidase activity and decreased root-to-shoot Fe translocation. Here we summarize the current knowledge of the cross-talk between Cu and Fe homeostasis and present a partial characterization of LACCASE12 (LAC12) that encodes a member of the multicopper oxidase (MCO) protein family in Arabidopsis. LAC12 transcript levels increase under Fe deficiency. The phenotypic characterization of two mutants carrying T-DNA insertions suggests a role of LAC12 in root-to-shoot Fe partitioning and in maintaining growth on Fe-deficient substrates. A molecular understanding of the complex interactions between Fe and Cu will be important for combating Fe deficiency in crops and for advancing biofortification approaches.
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Affiliation(s)
- María Bernal
- Department of Molecular Genetics and Physiology of Plants, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
- Department of Plant Nutrition, Estación Experimental de Aula Dei-CSIC, Zaragoza, Spain
- *Correspondence: María Bernal,
| | - Ute Krämer
- Department of Molecular Genetics and Physiology of Plants, Faculty of Biology and Biotechnology, Ruhr University Bochum, Bochum, Germany
- Ute Krämer,
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27
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Zhou J, Liu C, Francis M, Sun Y, Ryu MS, Grider A, Ye K. The Causal Effects of Blood Iron and Copper on Lipid Metabolism Diseases: Evidence from Phenome-Wide Mendelian Randomization Study. Nutrients 2020; 12:E3174. [PMID: 33080795 PMCID: PMC7603077 DOI: 10.3390/nu12103174] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Revised: 10/13/2020] [Accepted: 10/14/2020] [Indexed: 02/07/2023] Open
Abstract
Blood levels of iron and copper, even within their normal ranges, have been associated with a wide range of clinical outcomes. The available epidemiological evidence for these associations is often inconsistent and suffers from confounding and reverse causation. This study aims to examine the causal clinical effects of blood iron and copper with Mendelian randomization (MR) analyses. Genetic instruments for the blood levels of iron and copper were curated from existing genome-wide association studies. Candidate clinical outcomes were identified based on a phenome-wide association study (PheWAS) between these genetic instruments and a wide range of phenotypes in 310,999 unrelated individuals of European ancestry from the UK Biobank. All signals passing stringent correction for multiple testing were followed by MR analyses, with replication in independent data sources where possible. We found that genetically predicted higher blood levels of iron and copper are both associated with lower risks of iron deficiency anemia (odds ratio (OR) = 0.75, 95% confidence interval (CI): 0.67-0.85, p = 1.90 × 10-6 for iron; OR = 0.88, 95% CI: 0.78-0.98, p = 0.032 for copper), lipid metabolism disorders, and its two subcategories, hyperlipidemia (OR = 0.90, 95% CI: 0.85-0.96, p = 6.44 × 10-4; OR = 0.92, 95% CI: 0.87-0.98, p = 5.51 × 10-3) and hypercholesterolemia (OR = 0.90, 95% CI: 0.84-0.95, p = 5.34 × 10-4; OR = 0.93, 95% CI: 0.89-0.99, p = 0.022). Consistently, they are also associated with lower blood levels of total cholesterol and low-density lipoprotein cholesterol. Multiple sensitivity tests were applied to assess the presence of pleiotropy and the robustness of causal estimates. Regardless of the approaches, consistent evidence was obtained. Moreover, the unique clinical effects of each blood mineral were identified. Notably, genetically predicated higher blood iron is associated with an enhanced risk of varicose veins (OR = 1.28, 95% CI: 1.15-1.42, p = 4.34 × 10-6), while blood copper is positively associated with the risk of osteoarthrosis (OR = 1.07, 95% CI: 1.02-1.13, p = 0.010). Sex-stratified MR analysis further revealed some degree of sex differences in their clinical effects. Our comparative PheWAS-MR study of iron and copper comprehensively characterized their shared and unique clinical effects, highlighting their potential causal roles in hyperlipidemia and hypercholesterolemia. Given the modifiable nature of blood mineral status and the potential for clinical intervention, these findings warrant further investigation.
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Affiliation(s)
- Jingqi Zhou
- Department of Genetics, University of Georgia, Athens, GA 30602, USA; (J.Z.); (C.L.); (Y.S.)
- School of Public Health, Shanghai Jiao Tong University School of Medicine, Shanghai 200025, China
| | - Chang Liu
- Department of Genetics, University of Georgia, Athens, GA 30602, USA; (J.Z.); (C.L.); (Y.S.)
- College of Life Sciences, Wuhan University, Wuhan 430072, China
| | - Michael Francis
- Institute of Bioinformatics, University of Georgia, Athens, GA 30602, USA;
| | - Yitang Sun
- Department of Genetics, University of Georgia, Athens, GA 30602, USA; (J.Z.); (C.L.); (Y.S.)
| | - Moon-Suhn Ryu
- Department of Food Science and Nutrition, University of Minnesota, St. Paul, MN 55108, USA;
| | - Arthur Grider
- Department of Foods and Nutrition, University of Georgia, Athens, GA 30602, USA;
| | - Kaixiong Ye
- Department of Genetics, University of Georgia, Athens, GA 30602, USA; (J.Z.); (C.L.); (Y.S.)
- Institute of Bioinformatics, University of Georgia, Athens, GA 30602, USA;
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28
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Grzeszczak K, Kwiatkowski S, Kosik-Bogacka D. The Role of Fe, Zn, and Cu in Pregnancy. Biomolecules 2020; 10:E1176. [PMID: 32806787 PMCID: PMC7463674 DOI: 10.3390/biom10081176] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2020] [Revised: 08/05/2020] [Accepted: 08/05/2020] [Indexed: 12/15/2022] Open
Abstract
Iron (Fe), copper (Cu), and zinc (Zn) are microelements essential for the proper functioning of living organisms. These elements participatein many processes, including cellular metabolism and antioxidant and anti-inflammatory defenses, and also influence enzyme activity, regulate gene expression, and take part in protein synthesis. Fe, Cu, and Zn have a significant impact on the health of pregnant women and in the development of the fetus, as well as on the health of the newborn. A proper concentration of these elements in the body of women during pregnancy reduces the risk of complications such as anemia, induced hypertension, low birth weight, preeclampsia, and postnatal complications. The interactions between Fe, Cu, and Zn influence their availability due to their similar physicochemical properties. This most often occurs during intestinal absorption, where metal ions compete for binding sites with transport compounds. Additionally, the relationships between these ions have a great influence on the course of reactions in the tissues, as well as on their excretion, which can be stimulated or delayed. This review aims to summarize reports on the influence of Fe, Cu, and Zn on the course of single and multiple pregnancies, and to discuss the interdependencies and mechanisms occurring between Fe, Cu, and Zn.
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Affiliation(s)
- Konrad Grzeszczak
- Department of Biology and Medical Parasitology, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland;
| | - Sebastian Kwiatkowski
- Department of Obstetrics and Gynecology, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland;
| | - Danuta Kosik-Bogacka
- Independent Laboratory of Pharmaceutical Botany, Pomeranian Medical University in Szczecin, Powstańców Wielkopolskich 72, 70-111 Szczecin, Poland
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29
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Tsuji Y. Transmembrane protein western blotting: Impact of sample preparation on detection of SLC11A2 (DMT1) and SLC40A1 (ferroportin). PLoS One 2020; 15:e0235563. [PMID: 32645092 PMCID: PMC7347119 DOI: 10.1371/journal.pone.0235563] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Accepted: 06/18/2020] [Indexed: 12/24/2022] Open
Abstract
Western blotting has been widely used for investigation of protein expression, posttranslational modifications, and interactions. Because western blotting usually involves heat-denaturation of samples prior to gel loading, clarification of detailed procedures for sample preparation have been omitted or neglected in many publications. We show here the case that even excellent primary antibodies failed to detect a specific protein of interest due to a routine heating practice of protein samples. We performed western blotting for transmembrane iron transporter proteins; SLC11A2 (divalent metal transporter 1, DMT1), SLC40A1 (ferroportin 1, Fpn1), and transferrin receptor-1 (TfR1), along with cytoplasmic iron storage protein ferritin H. Our results in 12 human culture cell lysates indicated that only unheated samples prior to gel loading gave rise to clear resolution of DMT1 protein, while heated samples (95°C, 5min) caused the loss of resolution due to DMT1 protein aggregates. Unheated samples also resulted in better resolution for Fpn1 and TfR1 western blots. Conversely, only heated samples allowed to detect ferritin H, otherwise ferritin polymers failed to get into the gel. Neither different lysis/sample loading buffers nor sonication improved the resolution of DMT1 and Fpn1 western blots. Thus, heating samples most critically affected the outcome of western blotting, suggesting the similar cases for thousands of other transmembrane and heat-sensitive proteins.
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Affiliation(s)
- Yoshiaki Tsuji
- Department of Biological Sciences, Toxicology Program, North Carolina State University, Raleigh, NC, United States of America
- * E-mail:
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30
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Serra M, Columbano A, Ammarah U, Mazzone M, Menga A. Understanding Metal Dynamics Between Cancer Cells and Macrophages: Competition or Synergism? Front Oncol 2020; 10:646. [PMID: 32426284 PMCID: PMC7203474 DOI: 10.3389/fonc.2020.00646] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2019] [Accepted: 04/07/2020] [Indexed: 12/13/2022] Open
Abstract
Metal ions, such as selenium, copper, zinc, and iron are naturally present in the environment (air, drinking water, and food) and are vital for cellular functions at chemical, molecular, and biological levels. These trace elements are involved in various biochemical reactions by acting as cofactors for many enzymes and control important biological processes by binding to the receptors and transcription factors. Moreover, they are essential for the stabilization of the cellular structures and for the maintenance of genome stability. A body of preclinical and clinical evidence indicates that dysregulation of metal homeostasis, both at intracellular and tissue level, contributes to the pathogenesis of many different types of cancer. These trace minerals play a crucial role in preventing or accelerating neoplastic cell transformation and in modulating the inflammatory and pro-tumorigenic response in immune cells, such as macrophages, by controlling a plethora of metabolic reactions. In this context, macrophages and cancer cells interact in different manners and some of these interactions are modulated by availability of metals. The current review discusses the new findings and focuses on the involvement of these micronutrients in metabolic and cellular signaling mechanisms that influence macrophage functions, onset of cancer and its progression. An improved understanding of "metallic" cross-talk between macrophages and cancer cells may pave the way for innovative pharmaceutical or dietary interventions in order to restore the balance of these trace elements and also strengthen the chemotherapeutic treatment.
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Affiliation(s)
- Marina Serra
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium
| | - Amedeo Columbano
- Department of Biomedical Sciences, University of Cagliari, Cagliari, Italy
| | - Ummi Ammarah
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center – MBC, University of Torino, Turin, Italy
| | - Massimiliano Mazzone
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center – MBC, University of Torino, Turin, Italy
| | - Alessio Menga
- Laboratory of Tumor Inflammation and Angiogenesis, Center for Cancer Biology (CCB), VIB, Leuven, Belgium
- Department of Molecular Biotechnology and Health Sciences, Molecular Biotechnology Center – MBC, University of Torino, Turin, Italy
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31
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Shang Y, Luo M, Yao F, Wang S, Yuan Z, Yang Y. Ceruloplasmin suppresses ferroptosis by regulating iron homeostasis in hepatocellular carcinoma cells. Cell Signal 2020; 72:109633. [PMID: 32283255 DOI: 10.1016/j.cellsig.2020.109633] [Citation(s) in RCA: 103] [Impact Index Per Article: 25.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Revised: 04/08/2020] [Accepted: 04/08/2020] [Indexed: 02/06/2023]
Abstract
Ferroptosis is a regulated form of cell death characterized by the iron-dependent accumulation of lipid hydroperoxides. Ceruloplasmin (CP) is a glycoprotein that plays an essential role in iron homeostasis. However, whether CP regulates ferroptosis has not been reported. Here, we show that CP suppresses ferroptosis by regulating iron homeostasis in hepatocellular carcinoma (HCC) cells. Depletion of CP promoted erastin- and RSL3-induced ferroptotic cell death and resulted in the accumulation of intracellular ferrous iron (Fe2+) and lipid reactive oxygen species (ROS). Moreover, overexpression of CP suppressed erastin- and RSL3-induced ferroptosis in HCC cells. In addition, a novel frameshift mutation (c.1192-1196del, p.leu398serfs) of CP gene newly identified in patients with iron accumulation and neurodegenerative diseases lost its ability to regulate iron homeostasis and thus failed to participate in the regulation of ferroptosis. Collectively, these data suggest that CP plays an indispensable role in ferroptosis by regulating iron metabolism and indicate a potential therapeutic approach for hepatocellular carcinoma.
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Affiliation(s)
- Yuxue Shang
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China; The Brain Science Center, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Meiying Luo
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Fengping Yao
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China
| | - Shukun Wang
- The Brain Science Center, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Zengqiang Yuan
- The Brain Science Center, Beijing Institute of Basic Medical Sciences, Beijing 100850, China
| | - Yongfei Yang
- School of Life Science, Beijing Institute of Technology, Beijing 100081, China.
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32
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Pilozzi A, Yu Z, Carreras I, Cormier K, Hartley D, Rogers J, Dedeoglu A, Huang X. A Preliminary Study of Cu Exposure Effects upon Alzheimer's Amyloid Pathology. Biomolecules 2020; 10:E408. [PMID: 32155778 PMCID: PMC7175127 DOI: 10.3390/biom10030408] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/02/2020] [Accepted: 03/04/2020] [Indexed: 01/25/2023] Open
Abstract
A large body of evidence indicates that dysregulation of cerebral biometals (Fe, Cu, Zn) and their interactions with amyloid precursor protein (APP) and Aβ amyloid may contribute to the Alzheimer's disease (AD) Aβ amyloid pathology. However, the molecular underpinnings associated with the interactions are still not fully understood. Herein we have further validated the exacerbation of Aβ oligomerization by Cu and H2O2 in vitro. We have also reported that Cu enhanced APP translations via its 5' untranslated region (5'UTR) of mRNA in SH-SY5Y cells, and increased Aβ amyloidosis and expression of associated pro-inflammatory cytokines such as MCP-5 in Alzheimer's APP/PS1 doubly transgenic mice. This preliminary study may further unravel the pathogenic role of Cu in Alzheimer's Aβ amyloid pathogenesis, warranting further investigation.
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Affiliation(s)
- Alexander Pilozzi
- Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA; (A.P.); (J.R.)
| | - Zhanyang Yu
- Neuroprotection Research Laboratory, Departments of Radiology and Neurology, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA;
| | - Isabel Carreras
- Department of Veterans Affairs, VA Medical Center, Bedford, MA 01730, USA; (I.C.); (K.C.); (A.D.)
- Department of Neurology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Kerry Cormier
- Department of Veterans Affairs, VA Medical Center, Bedford, MA 01730, USA; (I.C.); (K.C.); (A.D.)
- Department of Neurology, Boston University School of Medicine, Boston, MA 02118, USA
| | | | - Jack Rogers
- Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA; (A.P.); (J.R.)
| | - Alpaslan Dedeoglu
- Department of Veterans Affairs, VA Medical Center, Bedford, MA 01730, USA; (I.C.); (K.C.); (A.D.)
- Department of Neurology, Boston University School of Medicine, Boston, MA 02118, USA
| | - Xudong Huang
- Neurochemistry Laboratory, Department of Psychiatry, Massachusetts General Hospital and Harvard Medical School, Charlestown, MA 02129, USA; (A.P.); (J.R.)
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Perea-García A, Andrés-Bordería A, Vera-Sirera F, Pérez-Amador MA, Puig S, Peñarrubia L. Deregulated High Affinity Copper Transport Alters Iron Homeostasis in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2020; 11:1106. [PMID: 32793263 PMCID: PMC7390907 DOI: 10.3389/fpls.2020.01106] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/24/2020] [Accepted: 07/06/2020] [Indexed: 05/08/2023]
Abstract
The present work describes the effects on iron homeostasis when copper transport was deregulated in Arabidopsis thaliana by overexpressing high affinity copper transporters COPT1 and COPT3 (COPTOE ). A genome-wide analysis conducted on COPT1OE plants, highlighted that iron homeostasis gene expression was affected under both copper deficiency and excess. Among the altered genes were those encoding the iron uptake machinery and their transcriptional regulators. Subsequently, COPTOE seedlings contained less iron and were more sensitive than controls to iron deficiency. The deregulation of copper (I) uptake hindered the transcriptional activation of the subgroup Ib of basic helix-loop-helix (bHLH-Ib) factors under copper deficiency. Oppositely, copper excess inhibited the expression of the master regulator FIT but activated bHLH-Ib expression in COPTOE plants, in both cases leading to the lack of an adequate iron uptake response. As copper increased in the media, iron (III) was accumulated in roots, and the ratio iron (III)/iron (II) was increased in COPTOE plants. Thus, iron (III) overloading in COPTOE roots inhibited local iron deficiency responses, aimed to metal uptake from soil, leading to a general lower iron content in the COPTOE seedlings. These results emphasized the importance of appropriate spatiotemporal copper uptake for iron homeostasis under non-optimal copper supply. The understanding of the role of copper uptake in iron metabolism could be applied for increasing crops resistance to iron deficiency.
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Affiliation(s)
- Ana Perea-García
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de Alimentos (IATA), Consejo Superior de Investigaciones Científicas (CSIC), Paterna, Valencia, Spain
| | - Amparo Andrés-Bordería
- Departament de Bioquímica i Biologia Molecular and Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universitat de València, Burjassot, Valencia, Spain
| | - Francisco Vera-Sirera
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC)—Universidad Politécnica de Valencia (UPV), Valencia, Spain
| | - Miguel Angel Pérez-Amador
- Instituto de Biología Molecular y Celular de Plantas (IBMCP), Consejo Superior de Investigaciones Científicas (CSIC)—Universidad Politécnica de Valencia (UPV), Valencia, Spain
| | - Sergi Puig
- Departamento de Biotecnología, Instituto de Agroquímica y Tecnología de Alimentos (IATA), Consejo Superior de Investigaciones Científicas (CSIC), Paterna, Valencia, Spain
| | - Lola Peñarrubia
- Departament de Bioquímica i Biologia Molecular and Estructura de Recerca Interdisciplinar en Biotecnologia i Biomedicina (ERI BIOTECMED), Universitat de València, Burjassot, Valencia, Spain
- *Correspondence: Lola Peñarrubia,
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Copper physiology in ruminants: trafficking of systemic copper, adaptations to variation in nutritional supply and thiomolybdate challenge. Nutr Res Rev 2019; 33:43-49. [PMID: 31533870 DOI: 10.1017/s0954422419000180] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Ruminants are recognised to suffer from Cu-responsive disorders. Present understanding of Cu transport and metabolism is limited and inconsistent across vets and veterinary professionals. There has been much progress from the studies of the 1980s and early 1990s in cellular Cu transport and liver metabolism which has not been translated into agricultural practice. Cu metabolism operates in regulated pathways of Cu trafficking rather than in pools of Cu lability. Cu in the cell is chaperoned to enzyme production, retention within metallothionein or excretion via the Golgi into the blood. The hepatocyte differs in that Cu-containing caeruloplasmin can be synthesised to provide systemic Cu supply and excess Cu is excreted via bile. The aim of the present review is to improve understanding and highlight the relevant progress in relation to ruminants through the translation of newer findings from medicine and non-ruminant animal models into ruminants.
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Wang B, Wang XP. Does Ceruloplasmin Defend Against Neurodegenerative Diseases? Curr Neuropharmacol 2019; 17:539-549. [PMID: 29737252 PMCID: PMC6712297 DOI: 10.2174/1570159x16666180508113025] [Citation(s) in RCA: 53] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 04/10/2018] [Accepted: 05/04/2018] [Indexed: 12/11/2022] Open
Abstract
Ceruloplasmin (CP) is the major copper transport protein in plasma, mainly produced by the liver. Glyco-sylphosphatidylinositol-linked CP (GPI-CP) is the predominant form expressed in astrocytes of the brain. A growing body of evidence has demonstrated that CP is an essential protein in the body with multiple functions such as regulating the home-ostasis of copper and iron ions, ferroxidase activity, oxidizing organic amines, and preventing the formation of free radicals. In addition, as an acute-phase protein, CP is induced during inflammation and infection. The fact that patients with genetic disorder aceruloplasminemia do not suffer from tissue copper deficiency, but rather from disruptions in iron metabolism shows essential roles of CP in iron metabolism rather than copper. Furthermore, abnormal metabolism of metal ions and ox-idative stress are found in other neurodegenerative diseases, such as Wilson’s disease, Alzheimer’s disease and Parkinson’s disease. Brain iron accumulation and decreased activity of CP have been shown to be associated with neurodegeneration. We hypothesize that CP may play a protective role in neurodegenerative diseases. However, whether iron accumulation is a cause or a result of neurodegeneration remains unclear. Further research on molecular mechanisms is required before a con-sensus can be reached regarding a neuroprotective role for CP in neurodegeneration. This review article summarizes
the main physiological functions of CP and the current knowledge of its role in neurodegenerative diseases.
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Affiliation(s)
- Bo Wang
- Shanghai General Hospital of Nanjing Medical University, Shanghai, 200080, China.,Department of Neurology Baoshan Branch, Shanghai General Hospital, Shanghai, 200940, China
| | - Xiao-Ping Wang
- Shanghai General Hospital of Nanjing Medical University, Shanghai, 200080, China.,Department of Neurology, Shanghai Tong- Ren Hospital, Shanghai Jiao-Tong University School of Medicine, Shanghai, 200080, China
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Jeyasingh PD, Pulkkinen K. Does differential iron supply to algae affect Daphnia life history? An ionome-wide study. Oecologia 2019; 191:51-60. [PMID: 31428869 DOI: 10.1007/s00442-019-04482-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 08/05/2019] [Indexed: 11/26/2022]
Abstract
The availability of iron (Fe) varies considerably among diet items, as well as ecosystems. Availability of Fe has also changed due to anthropogenic environmental changes in oceanic as well as inland ecosystems. We know little about its role in the nutrition of ecologically important consumers, particularly in inland ecosystems. Physiological studies in several taxa indicate marked effects of dietary Fe on oogenesis. We predicted that differential Fe supply to algae will impact algal Fe concentration with consequences on the life history of the freshwater grazer, Daphnia magna. We found that algal Fe concentration increased with Fe supply, but did not affect algal growth, indicating that the majority of experimental Fe additions were likely adsorbed to, or stored in algal cells. Regardless, data indicate that algal Fe impacted the reproductive traits (age and size at maturity) but not juvenile growth rate of Daphnia. A subsequent experiment revealed that Fe concentration in eggs was significantly higher than the rest of Daphnia. These results indicate that the concentration of Fe in or on algal cells may vary considerably among ecosystems overlying distinct geological formations differing in Fe, possibly with important implications for zooplankton life histories. Understanding the mechanisms underlying this response is unlikely to be accomplished by a strict focus on Fe because we found correlated shifts in the algal ionome, with concomitant ionome-wide adjustments in Daphnia. Information on ionome-wide responses may be useful in better understanding the responses of biota to changes in the supply of any one element.
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Affiliation(s)
- Punidan D Jeyasingh
- Department of Biological and Environmental Science, University of Jyväskylä, P. O. Box 35, 40014, Jyväskylä, Finland.
- Department of Integrative Biology, Oklahoma State University, 501 Life Sciences West, Stillwater, OK, 74078, USA.
| | - Katja Pulkkinen
- Department of Biological and Environmental Science, University of Jyväskylä, P. O. Box 35, 40014, Jyväskylä, Finland
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Maternal copper status and neuropsychological development in infants and preschool children. Int J Hyg Environ Health 2019; 222:503-512. [PMID: 30713056 DOI: 10.1016/j.ijheh.2019.01.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Revised: 12/17/2018] [Accepted: 01/17/2019] [Indexed: 12/16/2022]
Abstract
INTRODUCTION Copper (Cu) is an essential element involved in biological processes; however, excessive Cu could be harmful because of its reactive nature. Very few studies have evaluated its potential neurotoxic effects. We aimed to evaluate the association between maternal Cu levels and children's neuropsychological development. METHODS Study subjects were mother-child pairs from the Spanish INMA (i.e. Childhood and Environment) Project. Cu was measured by inductively coupled plasma mass spectrometry in serum samples taken at the first trimester of pregnancy (2003-2005). Neuropsychological development was assessed using the Bayley Scales of Infant Development (BSID) at 12 months (n = 651) and the McCarthy Scales of Children's Abilities (MSCA) at 5 years of age (n = 490). Covariates were obtained by questionnaires during pregnancy and childhood. Multivariate linear and non-linear models were built in order to study the association between maternal Cu and child neuropsychological development. RESULTS The mean ± standard deviation of maternal Cu concentrations was 1606 ± 272 μg/L. In the multivariate analysis, a negative linear association was found between maternal Cu concentrations and both the BSID mental scale (beta = -0.051; 95% confidence intervals [CI]: -0.102, -0.001) and the MSCA verbal scale (beta = -0.044; 95%CI:-0.094, 0.006). Boys obtained poorer scores than girls, with increasing Cu at 12 months (interaction p-value = 0.040 for the mental scale and 0.074 for the psychomotor scale). This effect modification disappeared at 5 years of age. The association between Cu and the MSCA scores (verbal, perceptive performance, global memory and motor, general cognitive, and executive function scales) was negative for those children with lowest maternal iron concentrations (<938μg/L). CONCLUSION The Cu concentrations observed in our study were within the reference range established for healthy pregnant women in previous studies. The results of this study contribute to the body of scientific knowledge with important information on the possible neurotoxic capability of Cu during pregnancy.
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Ramírez-Ojeda A, Moreno-Rojas R, Cámara-Martos F. Mineral and trace element content in legumes (lentils, chickpeas and beans): Bioaccesibility and probabilistic assessment of the dietary intake. J Food Compost Anal 2018. [DOI: 10.1016/j.jfca.2018.07.007] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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39
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Ortiz ML, Cámara-Martos F. Bioaccessibility and total content of iron, zinc, copper, and manganese in rice varieties (Oryza sativa
L.): A probabilistic assessment to evaluate their contribution to dietary reference intake. Cereal Chem 2018. [DOI: 10.1002/cche.10094] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- María Laura Ortiz
- Departamento de Ciencias Básicas; Facultad de Ciencias Veterinarias; Universidad Nacional del Nordeste; Corrientes Argentina
| | - Fernando Cámara-Martos
- Departamento de Bromatología y Tecnología de los Alimentos; Universidad de Córdoba; Córdoba España
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40
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Doguer C, Ha JH, Collins JF. Intersection of Iron and Copper Metabolism in the Mammalian Intestine and Liver. Compr Physiol 2018; 8:1433-1461. [PMID: 30215866 DOI: 10.1002/cphy.c170045] [Citation(s) in RCA: 91] [Impact Index Per Article: 15.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Iron and copper have similar physiochemical properties; thus, physiologically relevant interactions seem likely. Indeed, points of intersection between these two essential trace minerals have been recognized for many decades, but mechanistic details have been lacking. Investigations in recent years have revealed that copper may positively influence iron homeostasis, and also that iron may antagonize copper metabolism. For example, when body iron stores are low, copper is apparently redistributed to tissues important for regulating iron balance, including enterocytes of upper small bowel, the liver, and blood. Copper in enterocytes may positively influence iron transport, and hepatic copper may enhance biosynthesis of a circulating ferroxidase, ceruloplasmin, which potentiates iron release from stores. Moreover, many intestinal genes related to iron absorption are transactivated by a hypoxia-inducible transcription factor, hypoxia-inducible factor-2α (HIF2α), during iron deficiency. Interestingly, copper influences the DNA-binding activity of the HIF factors, thus further exemplifying how copper may modulate intestinal iron homeostasis. Copper may also alter the activity of the iron-regulatory hormone hepcidin. Furthermore, copper depletion has been noted in iron-loading disorders, such as hereditary hemochromatosis. Copper depletion may also be caused by high-dose iron supplementation, raising concerns particularly in pregnancy when iron supplementation is widely recommended. This review will cover the basic physiology of intestinal iron and copper absorption as well as the metabolism of these minerals in the liver. Also considered in detail will be current experimental work in this field, with a focus on molecular aspects of intestinal and hepatic iron-copper interplay and how this relates to various disease states. © 2018 American Physiological Society. Compr Physiol 8:1433-1461, 2018.
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Affiliation(s)
- Caglar Doguer
- Food Science and Human Nutrition Department, University of Florida, Florida, Gainesville, USA.,Nutrition and Dietetics Department, Namık Kemal University, Tekirdag, Turkey
| | - Jung-Heun Ha
- Food Science and Human Nutrition Department, University of Florida, Florida, Gainesville, USA.,Department of Food and Nutrition, Chosun University Note: Caglar Doguer and Jung-Heun Ha have contributed equally to this work., Gwangju, Korea
| | - James F Collins
- Food Science and Human Nutrition Department, University of Florida, Florida, Gainesville, USA
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Wang X, Flores SRL, Ha JH, Doguer C, Woloshun RR, Xiang P, Grosche A, Vidyasagar S, Collins JF. Intestinal DMT1 Is Essential for Optimal Assimilation of Dietary Copper in Male and Female Mice with Iron-Deficiency Anemia. J Nutr 2018; 148:1244-1252. [PMID: 30137476 PMCID: PMC6074787 DOI: 10.1093/jn/nxy111] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Accepted: 05/02/2018] [Indexed: 12/14/2022] Open
Abstract
Background Divalent metal-ion transporter 1 (DMT1) may transport copper, but studies to date on this topic have been equivocal. Previously, an ex vivo experiment showed that intestinal copper transport was impaired in Dmt1-mutant Belgrade rats. Objective In this study, we tested the hypothesis that intestinal DMT1 transports copper in vivo. Methods Intestine-specific Dmt1 knockout (Dmt1int/int) mice and normal (control) littermates (Dmt1fl/fl) were used. In study 1, intestinal copper absorption was assessed in 7-wk-old mice of both sexes and genotypes by oral-intragastric gavage of 64Cu under normal and iron-deficiency anemia (IDA) conditions. In study 2, both sexes and genotypes of 8-wk-old mice were fed diets with adequate iron concentrations [72 parts per million (ppm)] plus adequate (9 ppm) or excessive (183 ppm) copper concentrations for 4 wk. Iron- and copper-related physiologic variables were subsequently assessed. Results Study 1 showed that intestinal copper transport was enhanced in normal (∼11% increase in males, 35% in females) and anemic (∼42% increase in males, 35% in females) Dmt1int/int mice. Study 2 showed that, with adequate copper intakes, serum ceruloplasmin (Cp) activity was decreased (by ∼29% in males and 20% in females) and spleens were enlarged (by 3-fold in both sexes) in Dmt1int/int mice. Higher dietary copper increased hepatic copper concentrations (by ∼3.3-fold in males and 1.5-fold in females), restored serum Cp activity, and mitigated the noted splenomegaly in Dmt1int/int mice. Conclusions Copper homeostasis was disrupted in Dmt1int/int mice, particularly during IDA, despite the noted increases in intestinal copper transport. This was exemplified by the fact that extra dietary copper was required to restore serum Cp activity (a biomarker of copper status) and reduce the severity of the noted splenomegaly (which could reflect changes in erythropoietic demand) in Dmt1int/int mice. Collectively, these observations show that intestinal DMT1 is essential for the assimilation of sufficient quantities of dietary copper to maintain systemic copper homeostasis during IDA.
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Affiliation(s)
- Xiaoyu Wang
- Departments of Food Science and Human Nutrition, University of Florida, Gainesville, FL
| | - Shireen RL Flores
- Departments of Food Science and Human Nutrition, University of Florida, Gainesville, FL
| | - Jung-Heun Ha
- Departments of Food Science and Human Nutrition, University of Florida, Gainesville, FL
| | - Caglar Doguer
- Departments of Food Science and Human Nutrition, University of Florida, Gainesville, FL
| | - Regina R Woloshun
- Departments of Food Science and Human Nutrition, University of Florida, Gainesville, FL
| | - Ping Xiang
- Departments of Food Science and Human Nutrition, University of Florida, Gainesville, FL,State Key Lab of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Nanjing, China
| | - Astrid Grosche
- Departments of Radiation Oncology, University of Florida, Gainesville, FL
| | | | - James F Collins
- Departments of Food Science and Human Nutrition, University of Florida, Gainesville, FL,Address correspondence to JFC (e-mail: )
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Wang T, Xiang P, Ha JH, Wang X, Doguer C, Flores SRL, Kang YJ, Collins JF. Copper supplementation reverses dietary iron overload-induced pathologies in mice. J Nutr Biochem 2018; 59:56-63. [PMID: 29960117 DOI: 10.1016/j.jnutbio.2018.05.006] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Revised: 04/16/2018] [Accepted: 05/10/2018] [Indexed: 02/05/2023]
Abstract
Dietary iron overload in rodents impairs growth and causes cardiac hypertrophy, serum and tissue copper depletion, depression of serum ceruloplasmin (Cp) activity and anemia. Notably, increasing dietary copper content to ~25-fold above requirements prevents the development of these physiological perturbations. Whether copper supplementation can reverse these high-iron-related abnormalities has, however, not been established. The current investigation was thus undertaken to test the hypothesis that supplemental copper will mitigate negative outcomes associated with dietary iron loading. Weanling mice were thus fed AIN-93G-based diets with high (>100-fold in excess) or adequate (~80 ppm) iron content. To establish the optimal experimental conditions, we first defined the time course of iron loading, and assessed the impact of supplemental copper (provided in drinking water) on the development of high-iron-related pathologies. Copper supplementation (20 mg/L) for the last 3 weeks of a 7-week high-iron feeding period reversed the anemia, normalized serum copper levels and Cp activity, and restored tissue copper concentrations. Growth rates, cardiac copper concentrations and heart size, however, were only partially normalized by copper supplementation. Furthermore, high dietary iron intake reduced intestinal 64Cu absorption (~60%) from a transport solution provided to mice by oral, intragastric gavage. Copper supplementation of iron-loaded mice enhanced intestinal 64Cu transport, thus allowing sufficient assimilation of dietary copper to correct many of the noted high-iron-related physiological perturbations. We therefore conclude that high- iron intake increases the requirement for dietary copper (to overcome the inhibition of intestinal copper absorption).
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Affiliation(s)
- Tao Wang
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, China; Food Science and Human Nutrition Department, University of Florida, Gainesville, FL, USA
| | - Ping Xiang
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL, USA; School of the Environment, Nanjing University, Nanjing, China
| | - Jung-Heun Ha
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL, USA
| | - Xiaoyu Wang
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL, USA
| | - Caglar Doguer
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL, USA
| | - Shireen R L Flores
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL, USA
| | - Yujian James Kang
- Regenerative Medicine Research Center, West China Hospital, Sichuan University, Chengdu, China
| | - James F Collins
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL, USA.
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Ning Y, Wang X, Guo X, Zhang P, Qu P, Zhang F, Wang S, Lei Y, Lammi M. Nutrients Other than Selenium Are Important for Promoting Children's Health in Kashin-Beck Disease Areas. Biol Trace Elem Res 2018; 183:233-244. [PMID: 28921450 DOI: 10.1007/s12011-017-1154-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/05/2017] [Accepted: 09/07/2017] [Indexed: 01/05/2023]
Abstract
Overall nutritional status has been proved associated with people's health. The overall nutritional status of children in Kashin-Beck disease (KBD) areas has been overlooked for decades. Therefore, it is worth investigating in the current generation to gather evidence and make suggestions for improvement. A cross-sectional study with three 24-h dietary recalls was conducted to collect raw data on the daily food intake of children. Recorded food was converted into daily nutrient intakes using CDGSS 3.0 software. WHO AnthroPlus software was used to analyse the BMI-for-age z-score (BAZ) for estimating the overall nutrition status of children. All the comparisons and regression analyses were conducted with SPSS 18.0 software. Multiple nutrient intakes among children from the Se-supplemented KBD-endemic were under the estimated average requirement. The protein-to-carbohydrate ratio (P/C ratio) was significantly higher in children from the non-Se-supplemented KBD-endemic area than the other areas (P < 0.001). The children's BAZ was negatively associated with age (B = -0.095, P < 0.001) and the number of KBD relatives (B = -0.277, P = 0.04), and it was positively associated with better housing conditions, receiving colostrum, and daily intakes of niacin and zinc by multivariate regression analysis (F = 10.337, R = 0.609, P < 0.001).Compared to non-Se-supplemented KBD-endemic area and non-endemic areas, children in Se-supplemented KBD-endemic areas have an insufficient intake of multiple nutrients. School breakfast and lunch programmes are recommended, and strict implementation is the key to ensuring a positive effect.
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Affiliation(s)
- Yujie Ning
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, No.76 Yanta West Road, Xi'an, 710061, People's Republic of China
| | - Xi Wang
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, No.76 Yanta West Road, Xi'an, 710061, People's Republic of China
- Xi'an Jiaotong University Global Health Institute, Xi'an, China
| | - Xiong Guo
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, No.76 Yanta West Road, Xi'an, 710061, People's Republic of China.
| | - Pan Zhang
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, No.76 Yanta West Road, Xi'an, 710061, People's Republic of China
| | - Pengfei Qu
- Department of Epidemiology and Health Statistics, School of Public Health, Health Science Center, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Feng Zhang
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, No.76 Yanta West Road, Xi'an, 710061, People's Republic of China
| | - Sen Wang
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, No.76 Yanta West Road, Xi'an, 710061, People's Republic of China
| | - Yanxia Lei
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, No.76 Yanta West Road, Xi'an, 710061, People's Republic of China
| | - Mikko Lammi
- School of Public Health, Health Science Center, Xi'an Jiaotong University, Key Laboratory of Trace Elements and Endemic Diseases, National Health and Family Planning Commission, No.76 Yanta West Road, Xi'an, 710061, People's Republic of China
- Department of Integrative Medical Biology, University of Umeå, 901 87, Umeå, Sweden
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Ha JH, Doguer C, Flores SRL, Wang T, Collins JF. Progressive Increases in Dietary Iron Are Associated with the Emergence of Pathologic Disturbances of Copper Homeostasis in Growing Rats. J Nutr 2018; 148:373-378. [PMID: 29546308 PMCID: PMC6669950 DOI: 10.1093/jn/nxx070] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Accepted: 12/18/2017] [Indexed: 12/27/2022] Open
Abstract
Background Consumption of a high-iron diet causes copper deficiency in weanling rodents; however, the minimum amount of dietary iron that disrupts copper homeostasis has not been established. Objective We tested the hypothesis that dietary iron at only several-fold above physiologic requirements would cause copper depletion. Methods Weanling male Sprague-Dawley rats (n = 6/group) were fed AIN-93G-based diets with adequate (88 µg Fe/g = 1×), or excessive (4×, 9.5×, 18.5×, 38×, or 110×) iron content for 7 wk (110× group, due to notable morbidity) or 8 wk (all other groups). Copper-related physiologic parameters were then assessed. Results A hierarchy of copper-related, pathologic symptoms was noted as dietary iron concentrations increased. All statistical comparisons reported here refer to differences from the 1× (i.e., control) group. The highest iron concentration (110×) impaired growth (final body weights decreased ∼40%; P < 0.0001), and caused anemia (blood hemoglobin and hematocrit decreased ∼65%; P < 0.0001) and hepatic copper depletion (>85% reduction; P < 0.01). Cardiac hypertrophy occurred in the 110× (∼130% increase in mass; P < 0.0001) and 38× (∼25% increase; P < 0.05) groups, whereas cardiac copper content was lower in the 110× (P < 0.01), 38× (P < 0.01), and 18.5× (P < 0.05) groups (∼70% reductions). Splenic copper was also depleted in the 110× (>90% reduction; P < 0.0001), and in the 38× (P < 0.001) and 18.5× (P < 0.01) groups (∼70% reductions). Moreover, serum ceruloplasmin activity was decreased in the 110× and 38× (>90% reductions; P < 0.0001), and 18.5× (P < 0.001) and 9.5× (P < 0.05) (∼50% reductions) groups, typifying moderate to severe copper deficiency. Conclusions Increasing dietary iron intakes to ∼9.5-fold above dietary recommendations caused copper deficiency. Importantly, human iron supplementation is common, and recommended intakes for at-risk individuals may be ≤10-fold above the RDA. Whether these iron intakes perturb copper metabolism is worth considering, especially since copper defi-ciency can impair iron utilization (e.g., by decreasing the ferroxidase activity of ceruloplasmin).
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Affiliation(s)
- Jung-Heun Ha
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL
| | - Caglar Doguer
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL
| | - Shireen RL Flores
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL
| | - Tao Wang
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL,Regenerative Medicine Research Center, Sichuan University, Chengdu, China
| | - James F Collins
- Food Science and Human Nutrition Department, University of Florida, Gainesville, FL,Address correspondence to JFC (e-mail: )
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Arredondo M, González M, Latorre M. Copper. TRACE ELEMENTS AND MINERALS IN HEALTH AND LONGEVITY 2018. [DOI: 10.1007/978-3-030-03742-0_2] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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Current insights on the role of iron and copper dyshomeostasis in the pathogenesis of bilirubin neurotoxicity. Life Sci 2017; 191:34-45. [PMID: 29030087 DOI: 10.1016/j.lfs.2017.10.013] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2017] [Revised: 09/13/2017] [Accepted: 10/09/2017] [Indexed: 01/18/2023]
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Ha JH, Doguer C, Collins JF. Knockdown of copper-transporting ATPase 1 (Atp7a) impairs iron flux in fully-differentiated rat (IEC-6) and human (Caco-2) intestinal epithelial cells. Metallomics 2017; 8:963-972. [PMID: 27714044 DOI: 10.1039/c6mt00126b] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Intestinal iron absorption is highly regulated since no mechanism for iron excretion exists. We previously demonstrated that expression of an intestinal copper transporter (Atp7a) increases in parallel with genes encoding iron transporters in the rat duodenal epithelium during iron deprivation (Am. J. Physiol.: Gastrointest. Liver Physiol., 2005, 288, G964-G971). This led us to postulate that Atp7a may influence intestinal iron flux. Therefore, to test the hypothesis that Atp7a is required for optimal iron transport, we silenced Atp7a in rat IEC-6 and human Caco-2 cells. Iron transport was subsequently quantified in fully-differentiated cells plated on collagen-coated, transwell inserts. Interestingly, 59Fe uptake and efflux were impaired in both cell lines by Atp7a silencing. Concurrent changes in the expression of key iron transport-related genes were also noted in IEC-6 cells. Expression of Dmt1 (the iron importer), Dcytb (an apical membrane ferrireductase) and Fpn1 (the iron exporter) was decreased in Atp7a knockdown (KD) cells. Paradoxically, cell-surface ferrireductase activity increased (>5-fold) in Atp7a KD cells despite decreased Dcytb mRNA expression. Moreover, increased expression (>10-fold) of hephaestin (an iron oxidase involved in iron efflux) was associated with increased ferroxidase activity in KD cells. Increases in ferrireductase and ferroxidase activity may be compensatory responses to increase iron flux. In summary, in these reductionist models of the mammalian intestinal epithelium, Atp7a KD altered expression of iron transporters and impaired iron flux. Since Atp7a is a copper transporter, it is a logical supposition that perturbations in intracellular copper homeostasis underlie the noted biologic changes in these cell lines.
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Affiliation(s)
- Jung-Heun Ha
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida, USA
| | - Caglar Doguer
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida, USA
| | - James F Collins
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida, USA and Food Science & Human Nutrition Department, University of Florida, Gainesville, FL 32611, USA.
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Davies M, Alborough R, Jones L, Davis C, Williams C, Gardner DS. Mineral analysis of complete dog and cat foods in the UK and compliance with European guidelines. Sci Rep 2017; 7:17107. [PMID: 29215022 PMCID: PMC5719410 DOI: 10.1038/s41598-017-17159-7] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2017] [Accepted: 11/17/2017] [Indexed: 12/05/2022] Open
Abstract
Mineral content of complete pet food is regulated to ensure health of the companion animal population. Analysis of adherence to these regulatory guidelines has not been conducted. Here, mineral composition of complete wet (n = 97) and dry (n = 80) canine and feline pet food sold in the UK was measured to assess compliance with EU guidelines. A majority of foods complied with ≥8 of 11 guidelines (99% and 83% for dry and wet food, respectively), but many failed to provide nutritional minimum (e.g. Cu, 20% of wet food) or exceeded nutritional maximum (e.g. Se, 76% of wet food). Only 6% (6/97) of wet and 38% (30/80) of dry food were fully compliant. Some foods (20–30% of all analysed) had mineral imbalance, such as not having the recommended ratio of Ca:P (between 1:1 to 2:1). Foods with high fish content had high levels of undesirable metal elements such as arsenic. This study highlights broad non-compliance of a range of popular pet foods sold in the UK with EU guidelines (94% and 61% of wet and dry foods, respectively). If fed exclusively and over an extended period, a number of these pet foods could impact the general health of companion animals.
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Affiliation(s)
- M Davies
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5AD, United Kingdom. .,Provet Limited, The Old School House, 7 Church lane, Ravenfield, South Yorkshire, S65 4NG, United Kingdom.
| | - R Alborough
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5AD, United Kingdom
| | - L Jones
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5AD, United Kingdom
| | - C Davis
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5AD, United Kingdom
| | - C Williams
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5AD, United Kingdom
| | - D S Gardner
- School of Veterinary Medicine and Science, University of Nottingham, Sutton Bonington Campus, Loughborough, LE12 5AD, United Kingdom.
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Bowley MP, David WS, Cho TA, Dighe AS. Case 35-2017. A 57-Year-Old Woman with Hypoesthesia and Weakness in the Legs and Arms. N Engl J Med 2017; 377:1977-1984. [PMID: 29141163 DOI: 10.1056/nejmcpc1710564] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Affiliation(s)
- Michael P Bowley
- From the Departments of Neurology (M.P.B., W.S.D., T.A.C.) and Pathology (A.S.D.), Massachusetts General Hospital, and the Departments of Neurology (M.P.B., W.S.D., T.A.C.) and Pathology (A.S.D.), Harvard Medical School - both in Boston
| | - William S David
- From the Departments of Neurology (M.P.B., W.S.D., T.A.C.) and Pathology (A.S.D.), Massachusetts General Hospital, and the Departments of Neurology (M.P.B., W.S.D., T.A.C.) and Pathology (A.S.D.), Harvard Medical School - both in Boston
| | - Tracey A Cho
- From the Departments of Neurology (M.P.B., W.S.D., T.A.C.) and Pathology (A.S.D.), Massachusetts General Hospital, and the Departments of Neurology (M.P.B., W.S.D., T.A.C.) and Pathology (A.S.D.), Harvard Medical School - both in Boston
| | - Anand S Dighe
- From the Departments of Neurology (M.P.B., W.S.D., T.A.C.) and Pathology (A.S.D.), Massachusetts General Hospital, and the Departments of Neurology (M.P.B., W.S.D., T.A.C.) and Pathology (A.S.D.), Harvard Medical School - both in Boston
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Ha JH, Doguer C, Collins JF. Consumption of a High-Iron Diet Disrupts Homeostatic Regulation of Intestinal Copper Absorption in Adolescent Mice. Am J Physiol Gastrointest Liver Physiol 2017; 313:G535-G360. [PMID: 28619730 PMCID: PMC5668571 DOI: 10.1152/ajpgi.00169.2017] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2017] [Revised: 06/12/2017] [Accepted: 06/12/2017] [Indexed: 01/31/2023]
Abstract
High-iron feeding of rodents has been commonly used to model human iron-overload disorders. We recently noted that high-iron consumption impaired growth and caused severe systemic copper deficiency in growing rats, but the mechanism by which this occurred could not be determined due to technical limitations. In the current investigation, we thus utilized mice; first to determine if the same phenomenon occurred in another mammalian species, and secondly since we could assess in vivo copper absorption in mice. We hypothesized that excessive dietary iron impaired intestinal copper absorption. Weanling, male mice were thus fed AIN-93G-based diets containing high (HFe) (~8800 ppm) or adequate (AdFe) (~80 ppm) iron in combination with low (~0.9 ppm), adequate (~9 ppm) or high (~180 ppm) copper for several weeks. Iron and copper homeostasis was subsequently assessed. Mice consuming the HFe diets grew slower, were anemic, and had lower hepatic copper levels and serum ceruloplasmin activity. These physiologic perturbations were all prevented by higher dietary copper, demonstrating that copper depletion was the underlying cause. Furthermore, homeostatic regulation of copper absorption was noted in the mice consuming the AdFe diets, with absorption increasing as dietary copper decreased. HFe-fed mice did not have impaired copper absorption (disproving our hypothesis), but homeostatic control of absorption was disrupted. There were also noted perturbations in the tissue distribution of copper in the HFe-fed mice, suggesting that altered storage and thus bioavailability contributed to the noted copper deficiency. Dietary iron loading thus antagonizes copper homeostasis leading to pathological symptoms of severe copper depletion.
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Affiliation(s)
- Jung-Heun Ha
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida
| | - Caglar Doguer
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida
| | - James F. Collins
- Food Science and Human Nutrition Department, University of Florida, Gainesville, Florida
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