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Jang ES, Choi HY, Ki M, Kim BH, Kim KA, Jeong SH. Prevalence, Incidence, and Treatment Pattern of Wilson's Disease Using National Health Insurance Data From 2010-2020, Korea. J Korean Med Sci 2024; 39:e115. [PMID: 38565173 PMCID: PMC10985507 DOI: 10.3346/jkms.2024.39.e115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 02/26/2024] [Indexed: 04/04/2024] Open
Abstract
BACKGROUND Wilson's disease (WD) is an autosomal recessive disorder in which copper (Cu) accumulates in organs, particularly in the liver and central nervous system. This study aimed to investigate the prevalence, incidence, and treatment patterns of WD patients in Korea. METHODS National Health Insurance System (NHIS) claims data from 2010 to 2020 were analyzed. patients with WD as a primary or additional diagnosis at least once were identified using the International Classification of Diseases (ICD)-10 disease code E83.0 and a record for a registration program for rare intractable diseases in Korea. RESULTS The average age- and sex-adjusted prevalence and incidence of WD between 2010 and 2020 were 3.06/100,000 and 0.11/100,000, respectively. The mean age of the patients with newly diagnosed WD was 21.0 ± 15.9 years. Among the 622 WD incident cases during the study period, 19.3% of the patients had liver cirrhosis and 9.2% had received liver transplantation. Psychological and neurological diseases were present in 40.7% and 48.1% of the patients, respectively. Regarding the diagnosis of WD, liver biopsy was performed in only 51.6% of new cases. D-penicillamine, trientine, or zinc were prescribed in 81.5% of the incident cases, and the treatment uptake rates decreased with increasing age. CONCLUSION The prevalence of WD in Korea is 3.06/100,000 and approximately 1,800 patients use medical services annually. A significant proportion of patients are diagnosed at the cirrhotic stage and not treated with Cu-chelating therapeutics, suggesting the need for early diagnosis and adequate treatment to improve prognosis.
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Affiliation(s)
- Eun Sun Jang
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Hwa Young Choi
- Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Moran Ki
- Department of Cancer Control and Population Health, Graduate School of Cancer Science and Policy, National Cancer Center, Goyang, Korea
| | - Bo Hyun Kim
- Center for Liver and Pancreatobiliary Cancer, Division of Gastroenterology, National Cancer Center, Goyang, Korea
| | - Kyung-Ah Kim
- Department of Internal Medicine, Inje University Ilsan Paik Hospital, Goyang, Korea
| | - Sook-Hyang Jeong
- Department of Internal Medicine, Seoul National University College of Medicine, Seoul National University Bundang Hospital, Seongnam, Korea.
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Ruturaj, Mishra M, Saha S, Maji S, Rodriguez-Boulan E, Schreiner R, Gupta A. Regulation of the apico-basolateral trafficking polarity of the homologous copper-ATPases ATP7A and ATP7B. J Cell Sci 2024; 137:jcs261258. [PMID: 38032054 PMCID: PMC10729821 DOI: 10.1242/jcs.261258] [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: 04/19/2023] [Accepted: 10/05/2023] [Indexed: 12/01/2023] Open
Abstract
The homologous P-type copper-ATPases (Cu-ATPases) ATP7A and ATP7B are the key regulators of copper homeostasis in mammalian cells. In polarized epithelia, upon copper treatment, ATP7A and ATP7B traffic from the trans-Golgi network (TGN) to basolateral and apical membranes, respectively. We characterized the sorting pathways of Cu-ATPases between TGN and the plasma membrane and identified the machinery involved. ATP7A and ATP7B reside on distinct domains of TGN in limiting copper conditions, and in high copper, ATP7A traffics to basolateral membrane, whereas ATP7B traverses common recycling, apical sorting and apical recycling endosomes en route to apical membrane. Mass spectrometry identified regulatory partners of ATP7A and ATP7B that include the adaptor protein-1 complex. Upon knocking out pan-AP-1, sorting of both Cu-ATPases is disrupted. ATP7A loses its trafficking polarity and localizes on both apical and basolateral surfaces in high copper. By contrast, ATP7B loses TGN retention but retained its trafficking polarity to the apical domain, which became copper independent. Using isoform-specific knockouts, we found that the AP-1A complex provides directionality and TGN retention for both Cu-ATPases, whereas the AP-1B complex governs copper-independent trafficking of ATP7B solely. Trafficking phenotypes of Wilson disease-causing ATP7B mutants that disrupts putative ATP7B-AP1 interaction further substantiates the role of AP-1 in apical sorting of ATP7B.
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Affiliation(s)
- Ruturaj
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Monalisa Mishra
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Soumyendu Saha
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Saptarshi Maji
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
| | - Enrique Rodriguez-Boulan
- Department of Ophthalmology, Margaret Dyson Vision Research Institute, Weill Cornell Medicine, New York, NY 10021, USA
| | - Ryan Schreiner
- Division of Regenerative Medicine, Department of Medicine, Weill Cornell Medicine, New York, NY 10021, USA
| | - Arnab Gupta
- Department of Biological Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India
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3
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Toader C, Eva L, Covache-Busuioc RA, Costin HP, Glavan LA, Corlatescu AD, Ciurea AV. Unraveling the Multifaceted Role of the Golgi Apparatus: Insights into Neuronal Plasticity, Development, Neurogenesis, Alzheimer's Disease, and SARS-CoV-2 Interactions. Brain Sci 2023; 13:1363. [PMID: 37891732 PMCID: PMC10605100 DOI: 10.3390/brainsci13101363] [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: 08/01/2023] [Revised: 09/16/2023] [Accepted: 09/20/2023] [Indexed: 10/29/2023] Open
Abstract
This article critically evaluates the multifunctional role of the Golgi apparatus within neurological paradigms. We succinctly highlight its influence on neuronal plasticity, development, and the vital trafficking and sorting mechanisms for proteins and lipids. The discourse further navigates to its regulatory prominence in neurogenesis and its implications in Alzheimer's Disease pathogenesis. The emerging nexus between the Golgi apparatus and SARS-CoV-2 underscores its potential in viral replication processes. This consolidation accentuates the Golgi apparatus's centrality in neurobiology and its intersections with both neurodegenerative and viral pathologies. In essence, understanding the Golgi's multifaceted functions harbors profound implications for future therapeutic innovations in neurological and viral afflictions.
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Affiliation(s)
- Corneliu Toader
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.T.); (H.P.C.); (L.-A.G.); (A.D.C.); (A.V.C.)
- Department of Vascular Neurosurgery, National Institute of Neurology and Neurovascular Diseases, 077160 Bucharest, Romania
| | - Lucian Eva
- Faculty of Medicine, “Dunarea de Jos” University of Galati, 800201 Galați, Romania
- Emergency Clinical Hospital “Prof. dr. N. Oblu”, 700309 Iasi, Romania
| | - Razvan-Adrian Covache-Busuioc
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.T.); (H.P.C.); (L.-A.G.); (A.D.C.); (A.V.C.)
| | - Horia Petre Costin
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.T.); (H.P.C.); (L.-A.G.); (A.D.C.); (A.V.C.)
| | - Luca-Andrei Glavan
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.T.); (H.P.C.); (L.-A.G.); (A.D.C.); (A.V.C.)
| | - Antonio Daniel Corlatescu
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.T.); (H.P.C.); (L.-A.G.); (A.D.C.); (A.V.C.)
| | - Alexandru Vlad Ciurea
- Department of Neurosurgery, “Carol Davila” University of Medicine and Pharmacy, 020021 Bucharest, Romania; (C.T.); (H.P.C.); (L.-A.G.); (A.D.C.); (A.V.C.)
- Neurosurgery Department, Sanador Clinical Hospital, 010991 Bucharest, Romania
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Karpenko MN, Muruzheva ZM, Ilyechova EY, Babich PS, Puchkova LV. Abnormalities in Copper Status Associated with an Elevated Risk of Parkinson's Phenotype Development. Antioxidants (Basel) 2023; 12:1654. [PMID: 37759957 PMCID: PMC10525645 DOI: 10.3390/antiox12091654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2023] [Revised: 08/10/2023] [Accepted: 08/16/2023] [Indexed: 09/29/2023] Open
Abstract
In the last 15 years, among the many reasons given for the development of idiopathic forms of Parkinson's disease (PD), copper imbalance has been identified as a factor, and PD is often referred to as a copper-mediated disorder. More than 640 papers have been devoted to the relationship between PD and copper status in the blood, which include the following markers: total copper concentration, enzymatic ceruloplasmin (Cp) concentration, Cp protein level, and non-ceruloplasmin copper level. Most studies measure only one of these markers. Therefore, the existence of a correlation between copper status and the development of PD is still debated. Based on data from the published literature, meta-analysis, and our own research, it is clear that there is a connection between the development of PD symptoms and the number of copper atoms, which are weakly associated with the ceruloplasmin molecule. In this work, the link between the risk of developing PD and various inborn errors related to copper metabolism, leading to decreased levels of oxidase ceruloplasmin in the circulation and cerebrospinal fluid, is discussed.
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Affiliation(s)
- Marina N. Karpenko
- I.P. Pavlov Department of Physiology, Research Institute of Experimental Medicine, 197376 St. Petersburg, Russia; (M.N.K.); (Z.M.M.)
- Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia;
| | - Zamira M. Muruzheva
- I.P. Pavlov Department of Physiology, Research Institute of Experimental Medicine, 197376 St. Petersburg, Russia; (M.N.K.); (Z.M.M.)
- State Budgetary Institution of Health Care “Leningrad Regional Clinical Hospital”, 194291 St. Petersburg, Russia
| | - Ekaterina Yu. Ilyechova
- Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia;
- Research Center of Advanced Functional Materials and Laser Communication Systems, ADTS Institute, ITMO University, 197101 St. Petersburg, Russia
- Department of Molecular Genetics, Research Institute of Experimental Medicine, 197376 St. Petersburg, Russia
| | - Polina S. Babich
- Department of Zoology and Genetics, Faculty of Biology, Herzen State Pedagogical University of Russia, 191186 St. Petersburg, Russia;
| | - Ludmila V. Puchkova
- Institute of Biomedical Systems and Biotechnology, Peter the Great St. Petersburg Polytechnic University, 195251 St. Petersburg, Russia;
- Research Center of Advanced Functional Materials and Laser Communication Systems, ADTS Institute, ITMO University, 197101 St. Petersburg, Russia
- Department of Molecular Genetics, Research Institute of Experimental Medicine, 197376 St. Petersburg, Russia
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5
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Yin F, Nian M, Wang N, Wu H, Wu H, Zhao W, Cao S, Wu P, Zhou A. Protective Mechanism of Gandou Decoction in a Copper-Laden Hepatolenticular Degeneration Model: In Vitro Pharmacology and Cell Metabolomics. Front Pharmacol 2022; 13:848897. [PMID: 35401189 PMCID: PMC8984159 DOI: 10.3389/fphar.2022.848897] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2022] [Accepted: 02/17/2022] [Indexed: 01/09/2023] Open
Abstract
Gandou decoction (GDD) is a classic prescription for the treatment of hepatolenticular degeneration (HLD) in China; however, the liver-protecting mechanism of this prescription needs further evaluation. In the present study, we explored the protective mechanisms of GDD in a copper-laden HLD model using integrated pharmacology and cellular metabolomics in vitro. The results revealed that GDD could significantly promote copper excretion in copper-laden HLD model cells and improve the ultrastructural changes in hepatocytes. In addition, GDD could decrease the extent of lipid peroxidation, levels of reactive oxygen species, and the release rate of lactate dehydrogenase while increasing the activity of superoxide dismutase and the ratio of glutathione to oxidized glutathione in the copper-laden HLD model cells. On conducting statistical analysis of significant metabolic changes, 47 biomarkers and 30 related metabolic pathways were screened as pharmacological reactions induced by GDD in HLD model cells. d-glutamate and d-glutamine metabolic pathways showed the highest importance and significance among the 30 metabolic pathways, and the differential expression levels of the glutamine synthetase (GS) and the renal type and liver type GLS (GLS1 and GLS2) proteins were verified by Western blotting. Collectively, our data established the underlying mechanism of GDD therapy, such as the promotion of copper excretion and improvement in oxidative stress by regulating the expressions of GS, GLS1, and GLS2 protein to protect hepatocytes from injury.
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Affiliation(s)
- Fengxia Yin
- The Experimental Research Center, Anhui University of Chinese Medicine, Hefei, China
| | - Mengnan Nian
- The Experimental Research Center, Anhui University of Chinese Medicine, Hefei, China
| | - Na Wang
- The Experimental Research Center, Anhui University of Chinese Medicine, Hefei, China
| | - Hongfei Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, China
| | - Huan Wu
- School of Pharmacy, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, China
| | - Wenchen Zhao
- Department of Pharmaceutical Sciences, School of Pharmacy, University of Pittsburgh, Pittsburgh, PA, United States
| | - Shijian Cao
- The First Affiliated Hospital of Anhui University of Chinese Medicine, Hefei, China
| | - Peng Wu
- Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, China
| | - An Zhou
- The Experimental Research Center, Anhui University of Chinese Medicine, Hefei, China
- Anhui Province Key Laboratory of Research and Development of Chinese Medicine, Anhui Province Key Laboratory of Chinese Medicinal Formula, Hefei, China
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Zou J, Wang YH, Wang L, Chen RC. Liver Failure of Wilson's Disease With Manifestations Similar to Porphyria and Uncommon ATP7B Gene Mutation: A Case Report and Literature Review. Front Med (Lausanne) 2021; 8:702312. [PMID: 34381801 PMCID: PMC8350053 DOI: 10.3389/fmed.2021.702312] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2021] [Accepted: 06/28/2021] [Indexed: 11/17/2022] Open
Abstract
Background: Wilson's disease (WD) is a rare condition; its diagnosis is challenging owing to a wide spectrum of ATP7B genotypes and variable clinical phenotypes, along with environmental factors. Few cases of WD with presentation of skin lesions and acute neurovisceral symptoms have been reported in the literature. To our knowledge, this is the first reported case of WD with an uncommon ATP7B gene mutation and rare symptoms of photosensitivity, sensation abnormality, and skin eruption occurring in a 19-year-old woman. Case presentation: We report the case of a 19-year-old woman with WD presenting with liver failure, skin manifestations, and acute neurovisceral symptoms.The rare mutation in intron 1 of ATP7B (c.51+2T > G) was further confirmed by gene sequencing. The patients' symptoms improved after administration of penicillamine and zinc therapy combined with plasma exchange. She received long-term penicillamine treatment, and her liver function was within the normal range at 1 year after discharge. However, she underwent liver transplantation at 1.5 years after discharge. Conclusions: We present a case of WD with a novel ATP7B gene mutation that may serve as a reference to generalists and specialists in hepatology or neurology of the rare clinical characteristics of WD, to prevent misdiagnosis and aid in the early diagnosis and treatment of the condition.
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Affiliation(s)
- Ju Zou
- Department of Infectious Disease, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Ying-Hao Wang
- Department of Ophthalmology, The Second Xiangya Hospital, Central South University, Changsha, China
| | - Ling Wang
- Department of Infectious Disease, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
| | - Ruo-Chan Chen
- Department of Infectious Disease, Xiangya Hospital, Central South University, Changsha, China
- Hunan Key Laboratory of Viral Hepatitis, Xiangya Hospital, Central South University, Changsha, China
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7
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Collins CJ, Yi F, Dayuha R, Duong P, Horslen S, Camarata M, Coskun AK, Houwen RHJ, Pop TL, Zoller H, Yoo HW, Jung SW, Weiss KH, Schilsky ML, Ferenci P, Hahn SH. Direct Measurement of ATP7B Peptides Is Highly Effective in the Diagnosis of Wilson Disease. Gastroenterology 2021; 160:2367-2382.e1. [PMID: 33640437 PMCID: PMC8243898 DOI: 10.1053/j.gastro.2021.02.052] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 02/09/2021] [Accepted: 02/21/2021] [Indexed: 02/08/2023]
Abstract
BACKGROUND & AIMS Both existing clinical criteria and genetic testing have significant limitations for the diagnosis of Wilson disease (WD), often creating ambiguities in patient identification and leading to delayed diagnosis and ineffective management. ATP7B protein concentration, indicated by direct measurement of surrogate peptides from patient dried blood spot samples, could provide primary evidence of WD. ATP7B concentrations were measured in patient samples from diverse backgrounds, diagnostic potential is determined, and results are compared with biochemical and genetic results from individual patients. METHODS Two hundred and sixty-four samples from biorepositories at 3 international and 2 domestic academic centers and 150 normal controls were obtained after Institutional Review Board approval. Genetically or clinically confirmed WD patients with a Leipzig score >3 and obligate heterozygote (carriers) from affected family members were included. ATP7B peptide measurements were made by immunoaffinity enrichment mass spectrometry. RESULTS Two ATP7B peptides were used to measure ATP7B protein concentration. Receiver operating characteristics curve analysis generates an area under the curve of 0.98. ATP7B peptide analysis of the sequence ATP7B 887 was found to have a sensitivity of 91.2%, specificity of 98.1%, positive predictive value of 98.0%, and a negative predictive value of 91.5%. In patients with normal ceruloplasmin concentrations (>20 mg/dL), 14 of 16 (87.5%) were ATP7B-deficient. In patients without clear genetic results, 94% were ATP7B-deficient. CONCLUSIONS Quantification of ATP7B peptide effectively identified WD patients in 92.1% of presented cases and reduced ambiguities resulting from ceruloplasmin and genetic analysis. Clarity is brought to patients with ambiguous genetic results, significantly aiding in noninvasive diagnosis. A proposed diagnostic score and algorithm incorporating ATP7B peptide concentrations can be rapidly diagnostic and supplemental to current Leipzig scoring systems.
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Affiliation(s)
| | - Fan Yi
- Seattle Children's Research Institute, Seattle, Washington
| | | | - Phi Duong
- Seattle Children's Research Institute, Seattle, Washington
| | - Simon Horslen
- University of Washington School of Medicine, Seattle, Washington
| | | | - Ayse K Coskun
- Yale University School of Medicine, New Haven, Connecticut
| | - Roderick H J Houwen
- Wilhelmina Children's Hospital, University Medical Center, Utrecht, The Netherlands
| | - Tudor L Pop
- Second Pediatric Clinic, University of Medicine and Pharmacy, Iuliu Hatieganu, Cluj-Napoca, Romania
| | - Heinz Zoller
- Medical University of Innsbruck, Innsbruck, Austria
| | | | - Sung Won Jung
- Gachon University School of Medicine, Incheon, Korea
| | - Karl H Weiss
- Heidelberg University Hospital, Heidelberg, Germany
| | | | | | - Si Houn Hahn
- Seattle Children's Research Institute, Seattle, Washington; University of Washington School of Medicine, Seattle, Washington.
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Stremmel W, Weiskirchen R. Therapeutic strategies in Wilson disease: pathophysiology and mode of action. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:732. [PMID: 33987430 PMCID: PMC8106045 DOI: 10.21037/atm-20-3090] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Wilson disease is a copper overload disease treatable with the chelators D-penicillamine and trientine to enhance urinary excretion or with zinc which predominantly inhibits absorption. By lifelong treatment a normal life expectancy and significant improvement of hepatic injury as well as neurologic manifestation is achievable. Here we evaluate the mode of action for effective therapy of Wilson disease. We postulate that there is no quantitative removal of copper from the liver possible. The therapeutic goal is the removal of toxic free copper (non-ceruloplasmin, but albumin bound copper). This is achievable by the induction of metallothionein which is accomplished by chelators and in particular by zinc. For control of therapy the option of a direct measurement of free copper would be preferable over the less reliable calculation of this fraction. A therapeutic challenge is still the full restoration of neurological deficits which can hardly be reached by the available chelators. Whether bis-choline-tetrathiomolybdate as intracellular copper chelator is an option has to be awaited. It is concluded that the goal of actual drug therapy in Wilson disease is the normalization of free copper in serum.
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Affiliation(s)
- Wolfgang Stremmel
- Department of Gastroenterology, Medical Center Baden-Baden, Baden-Baden, Germany
| | - Ralf Weiskirchen
- Institute of Molecular Pathobiochemistry, Experimental Gene Therapy and Clinical Chemistry, RWTH University Hospital Aachen, Aachen, Germany
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9
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Toxic milk mice models of Wilson's disease. Mol Biol Rep 2021; 48:1903-1914. [PMID: 33590415 PMCID: PMC7925478 DOI: 10.1007/s11033-021-06192-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2020] [Accepted: 01/28/2021] [Indexed: 10/24/2022]
Abstract
Wilson's disease (WD) is a rare genetic disorder inherited as an autosomal recessive trait. The signs and symptoms of this disease are related to dysfunctional ATP7B protein which leads to copper accumulation and cellular damage. The organs that are most commonly affected by WD are the liver and brain. The dysfunctional ATP7B homolog has previously been identified in many different species, including two naturally occurring murine models called toxic milk mice. The aim of this paper was to compare the toxic milk mouse described by Rauch (tx) to that from Jackson Laboratory (txJ) through a review of studies on these two groups of mice. The two mice strains differ in the type of carried mutation and the phenotype of the disease. The data of the studies showed that the tx mice developed mild chronic hepatitis but suffered severe organ destruction with faster progression to full-liver cirrhosis. No changes were noted in the neurological and behavioral status of this strain despite the described toxic accumulation of copper and neuronal destruction in their brain. On the other hand, though the Jackson toxic milk mice (txJ) also presented chronic hepatitis, the condition was a bit milder with slower progression to end-stage disease. Moreover, hepatocyte suitable to perform neurobehavioral research as their phenotype characterized by tremors and locomotor disabilities better corresponds with the cliniconeurological picture of the humans.
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Gromadzka G, Wierzbicka D, Litwin T, Przybyłkowski A. Iron metabolism is disturbed and anti-copper treatment improves but does not normalize iron metabolism in Wilson's disease. Biometals 2021; 34:407-414. [PMID: 33555495 PMCID: PMC7940312 DOI: 10.1007/s10534-021-00289-x] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Accepted: 01/26/2021] [Indexed: 12/23/2022]
Abstract
Wilson's disease (WD) is a rare hereditary disorder of copper metabolism. Some data suggest that iron metabolism is disturbed in WD and this may affect the course of the disease. The current study aimed to determine whether anti-copper treatment could affect iron metabolism in WD. One hundred thirty-eight WD patients and 102 controls were examined. Serum ceruloplasmin and copper were measured by colorimetric enzyme assay or atomic adsorption spectroscopy, respectively. Routine and non-routine parameters of iron metabolism were measured by standard laboratory methods or enzyme immunoassay, respectively. WD patients, both newly diagnosed and treated, had less serum copper and ceruloplasmin than controls (90.0, 63.0, 22.0 mg/dL, respectively, p < 0.001); in the treated patients blood copper and ceruloplasmin were lower than in untreated patients (p < 0.001). Untreated patients (n = 39) had a higher median blood iron (126.0 vs 103.5 ug/dL, p < 0.05), ferritin (158.9 vs 47.5 ng/mL, p < 0.001), hepcidin (32, 6 vs 12.1 ng/mL, p < 0.001) and sTfR (0.8 vs. 0.7 ug/mL, p < 0.001) and lower blood transferrin (2.4 vs. 2.7 g/L, p < 0.001), TIBC (303.0 vs 338.0 ug/dL, p < 0.001), hemoglobin (13.1 vs 13.9 g/dL, p < 0.01) and RBC (4.3 vs. 4.6, p < 0.002) than controls. Treated patients (n = 99) had a significantly lower median iron (88.0 vs. 126.0 ug/dL, p < 0.001), ferritin (77.0 vs. 158.9 ng/mL, p < 0.005) and hepcidin (16.7 vs. 32.6 ng/mL, p < 001) and higher transferrin (2.8 vs. 2.4 g/L, p < 0.005), TIBC (336.0 vs 303.0 ug/dL, p < 0.001), RBC (4.8 vs. 4.3 M/L, p < 0.001) and hemoglobin (14.4 vs. 13.1 g/dL, p < 0.001) than untreated; the median iron (p < 0.005) was lower, and ferritin (p < 0.005), RBC (p < 0.005) and hepcidin (p < 0.002) were higher in them than in the control group. Changes in copper metabolism are accompanied by changes in iron metabolism in WD. Anti-copper treatment improves but does not normalize iron metabolism.
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Affiliation(s)
- Grażyna Gromadzka
- Faculty of Medicine, Collegium Medicum, Cardinal Stefan Wyszyński University in Warsaw, Wóycickiego Str. 1/3, 01-938, Warsaw, Poland
| | - Diana Wierzbicka
- Second Department of Neurology, Institute of Psychiatry and Neurology, Sobieskiego Str. 9, 02-957, Warsaw, Poland
| | - Tomasz Litwin
- Second Department of Neurology, Institute of Psychiatry and Neurology, Sobieskiego Str. 9, 02-957, Warsaw, Poland
| | - Adam Przybyłkowski
- Department of Gastroenterology and Internal Medicine, Medical University of Warsaw, Banacha Str. 1a, 02-097, Warsaw, Poland.
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11
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Masi L, Ferrari S, Javaid MK, Papapoulos S, Pierroz DD, Brandi ML. Bone fragility in patients affected by congenital diseases non skeletal in origin. Orphanet J Rare Dis 2021; 16:11. [PMID: 33407701 PMCID: PMC7789665 DOI: 10.1186/s13023-020-01611-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2020] [Accepted: 11/10/2020] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Bone tissue represents a large systemic compartment of the human body, with an active metabolism, that controls mineral deposition and removal, and where several factors may play a role. For these reasons, several non-skeletal diseases may influence bone metabolism. It is of a crucial importance to classify these disorders in order to facilitate diagnosis and clinical management. This article reports a taxonomic classification of non-skeletal rare congenital disorders, which have an impact on bone metabolism METHODS: The International Osteoporosis Foundation (IOF) Skeletal Rare Diseases Working Group (SRD-WG), comprised of basic and clinical scientists, has decided to review the taxonomy of non-skeletal rare disorders that may alter bone physiology. RESULTS The taxonomy of non-skeletal rare congenital disorders which impact bone comprises a total of 6 groups of disorders that may influence the activity of bone cells or the characteristics of bone matrix. CONCLUSIONS This paper provides the first comprehensive taxonomy of non-skeletal rare congenital disorders with impact on bone physiology.
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Affiliation(s)
- L Masi
- Metabolic Bone Diseases Unit, University Hospital of Florence, AOU-Careggi, Florence, Italy
| | - S Ferrari
- Division of Bone Diseases, Faculty of Medicine, Geneva University Hospital, Geneva, Switzerland
| | - M K Javaid
- Oxford NIHR Musculoskeletal Biomedical Research Unit, University of Oxford, Oxford, UK
| | - S Papapoulos
- Center for Bone Quality, Leiden University Medical Center, Leiden, The Netherlands
| | - D D Pierroz
- International Osteoporosis Foundation (IOF), Rue Juste-Olivier 9, 1260, Nyon, Switzerland
| | - M L Brandi
- Fondazione Italiana Ricerca sulle Malattie dell'Osso, Florence, Italy.
- Department of Biomedical, Experimental and Clinical Sciences, University of Florence, Florence, Italy.
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12
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Gromadzka G, Wierzbicka D, Litwin T, Przybyłkowski A. Difference in iron metabolism may partly explain sex-related variability in the manifestation of Wilson's disease. J Trace Elem Med Biol 2020; 62:126637. [PMID: 32937238 DOI: 10.1016/j.jtemb.2020.126637] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2020] [Revised: 08/05/2020] [Accepted: 08/26/2020] [Indexed: 01/07/2023]
Abstract
BACKGROUND/AIM Wilson's disease (WD) is a hereditary disorder characterized by abnormal metabolism of copper. For unknown reasons, the clinical picture of this disease appears to be sex-dependent. Because the metabolism of copper and iron is interrelated, we aimed to evaluate whether the variability in the clinical picture of WD could be explained by the sex difference in iron metabolism. METHODS A total of 138 WD patients were examined in this study: 39 newly diagnosed, treatment naive patients and 99 individuals already treated with decoppering drugs. The serum concentration of ceruloplasmin (Cp) and copper were measured using an enzymatic colorimetric assay and by atomic absorption spectroscopy, respectively. The parameters of iron metabolism were determined by using standard laboratory methods and enzyme immunoassays. RESULTS In the treatment naive group men had a higher median serum concentration of ferritin (290.5 vs. 81.0 ng/mL, p < 10-4), and hepcidin (Hepc) (55.4 vs. 22.8 ng/mL, p < 10-3) compared to women, and tended to have higher concentration of iron, hemoglobin (HGB) and number of red blood cells (RBC). In the treated group men had higher median ferritin (122.0 vs. 46.0 ng/mL, p < 10-4), Hepc (23.5 vs. 10.8 ng/mL, p < 10-4), iron (102.5 vs. 68.0 μg/dL, p < 10-4), HGB (15.0 vs. 13.2 g/dL, p < 10-4), and RBC (5.0 vs. 4.5 M/L, p < 10-4) than women. CONCLUSION Iron metabolism differs between men and women with WD, which may partly explain the sex difference noted in the disease manifestation.
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Affiliation(s)
- Grażyna Gromadzka
- Cardinal Stefan Wyszyński University, Faculty of Medical Science, Collegium Medicum, Warsaw, Poland
| | - Diana Wierzbicka
- Institute of Psychiatry and Neurology, Second Department of Neurology, Warsaw, Poland
| | - Tomasz Litwin
- Institute of Psychiatry and Neurology, Second Department of Neurology, Warsaw, Poland
| | - Adam Przybyłkowski
- Medical University in Warsaw, Department of Gastroenterology and Internal Medicine, Warsaw, Poland.
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13
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Tanaka YK, Ogra Y. Evaluation of copper metabolism in neonatal rats by speciation analysis using liquid chromatography hyphenated to ICP mass spectrometry. Metallomics 2020; 11:1679-1686. [PMID: 31417989 DOI: 10.1039/c9mt00158a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
It is known that copper (Cu) is highly accumulated in several organs in the perinatal period, suggesting changes in Cu metabolism with development, although the precise mechanisms are still unclear. To elucidate the mechanisms underlying Cu accumulation in the organs of neonatal rats, we performed speciation analysis using high-performance liquid chromatography hyphenated to inductively coupled plasma mass spectrometry. In the neonatal rat liver immediately after birth, the Cu concentration was elevated 10-fold compared to that in the juvenile rat liver. Most of the accumulated Cu was bound to metallothionein, although Cu in Cu, zinc-superoxide dismutase (SOD) was reduced. Contrary to the hepatic Cu accumulation, the serum Cu concentrations in the neonatal rats were low due to the decreased amount of Cu bound to ceruloplasmin. The mRNA expression of antioxidant protein 1 (Atox1), a Cu chaperone that transports Cu to Atp7b, remained low up to two weeks after birth. These results suggest that Cu accumulation in the neonatal rat liver is caused by the low expression of Atox1, and the accumulation is useful to distribute Cu to Cu-containing anti-oxidative enzymes (e.g., SOD and Atox1) after respiration starts.
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Affiliation(s)
- Yu-Ki Tanaka
- Graduate School of Pharmaceutical Sciences, Chiba University, 1-8-1 Inohana, Chuo, Chiba 260-8675, Japan.
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14
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Kakuda M, Matsuzaki S, Ueda Y, Shiomi M, Matsuzaki S, Kimura T, Fujita M, Egawa-Takata T, Kobayashi E, Serada S, Yoshino K, Naka T, Kimura T. Copper ions are novel therapeutic agents for uterine leiomyosarcoma. Am J Obstet Gynecol 2020; 222:64.e1-64.e16. [PMID: 31351063 DOI: 10.1016/j.ajog.2019.07.030] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2019] [Revised: 07/12/2019] [Accepted: 07/18/2019] [Indexed: 12/30/2022]
Abstract
BACKGROUND Multidrug resistance is a major concern in uterine leiomyosarcoma treatment. Development of effective chemotherapies and management of drug resistance in patients is necessary. The copper efflux transporter adenosine triphosphatase copper transporting beta is a member of the P-type adenosine triphosphatase family and is also known as a strong platinum efflux transporter. Various reports have shown the association between adenosine triphosphatase copper transporting beta and platinum resistance; however, suitable inhibitors or methods for inhibiting platinum efflux via adenosine triphosphatase copper transporting beta are not developed. OBJECTIVE Our study focused on platinum resistance in uterine leiomyosarcoma. The role of adenosine triphosphatase copper transporting beta in uterine leiomyosarcoma resistance to platinum drugs was investigated both in vitro and in vivo. STUDY DESIGN Adenosine triphosphatase copper transporting beta expression was investigated by Western blotting and the efficacy of copper sulfate pretreatment and cisplatin administration in adenosine triphosphatase copper transporting beta-expressing cells was investigated both in vitro and in vivo. RESULTS Western blot analysis of SK-LMS-1 cells (uterine leiomyosarcoma cell line) revealed strong adenosine triphosphatase copper transporting beta expression. A permanent SK-LMS-ATPase copper transporting beta-suppressed cell line (SK-LMS-7B cells) was generated, and cisplatin exhibited a significant antitumor effect in SK-LMS-7B cells, both in vitro (SK-LMS-1 cells, half-maximal inhibitory concentration, 17.2 μM; SK-LMS-7B cells, half-maximal inhibitory concentration, 4.2 μM, P < .01) and in xenografts compared with that in SK-LMS-1 cells (5.8% vs 62.8%, P < .01). Copper sulfate was identified as a preferential inhibitor of platinum efflux via adenosine triphosphatase copper transporting beta. In SK-LMS-1 cells pretreated with 15 μM copper sulfate for 3 hours, the cisplatin half-maximal inhibitory concentration decreased significantly compared with that in untreated cells and resulted in significantly increased intracellular platinum accumulation (1.9 pg/cell vs 8.6 pg/cell, P < .01). The combination of copper sulfate pretreatment with cisplatin administration was also effective in vivo and caused cisplatin to exhibit significantly increased antitumor effects in mice with SK-LMS-1 xenografts (3.1% vs 62.7%, P < .01). CONCLUSION Our study demonstrates that adenosine triphosphatase copper transporting beta is overexpressed in uterine leiomyosarcoma cells and that copper sulfate, which acts as an inhibitor of platinum efflux via adenosine triphosphatase copper transporting beta, may be a therapeutic agent in the treatment of uterine leiomyosarcoma.
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Affiliation(s)
- Mamoru Kakuda
- Department of Obstetrics and Gynecology, Osaka University, Osaka, Japan; Department of Obstetrics and Gynecology, Sakai Medical Center, Osaka, Japan
| | - Shinya Matsuzaki
- Department of Obstetrics and Gynecology, Osaka University, Osaka, Japan.
| | - Yutaka Ueda
- Department of Obstetrics and Gynecology, Osaka University, Osaka, Japan.
| | - Mayu Shiomi
- Department of Obstetrics and Gynecology, Osaka University, Osaka, Japan
| | | | - Toshihiro Kimura
- Department of Gynecology, Osaka International Cancer Institute, Osaka, Japan
| | - Masami Fujita
- Department of Obstetrics and Gynecology, Osaka University, Osaka, Japan
| | - Tomomi Egawa-Takata
- Department of Obstetrics and Gynecology, Osaka Keisatsu Hospital, Osaka, Japan
| | - Eiji Kobayashi
- Department of Obstetrics and Gynecology, Osaka University, Osaka, Japan
| | - Satoshi Serada
- Center for Intractable Immune Disease, Kochi Medical School, Kochi University, Kochi, Japan
| | - Kiyoshi Yoshino
- Department of Obstetrics and Gynecology, Osaka University, Osaka, Japan; Department of Obstetrics and Gynecology, University of Occupational and Environmental Health, Fukuoka, Japan
| | - Tetsuji Naka
- Center for Intractable Immune Disease, Kochi Medical School, Kochi University, Kochi, Japan
| | - Tadashi Kimura
- Department of Obstetrics and Gynecology, Osaka University, Osaka, Japan
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15
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Liu WL, Li F, Liu L, Chen W, He ZX, Gu H, Ai R. A novel gross deletion and breakpoint junction sequence analysis of ATP7B in a Chinese family with Wilson disease using next‑generation sequencing and Sanger sequencing. Mol Med Rep 2019; 21:517-523. [PMID: 31746411 PMCID: PMC6896306 DOI: 10.3892/mmr.2019.10830] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Accepted: 10/15/2019] [Indexed: 11/15/2022] Open
Abstract
Wilson disease (WD) is a rare autosomal recessive genetic disorder that causes abnormal copper metabolism, resulting in pathological accumulation of copper in the liver, brain and other organs. Mutations in the ATPase copper transporter 7B (ATP7B) gene, which encodes a membrane P-type adenosine triphosphatase, have been identified as being responsible for WD. The present study analyzed clinical data and collected DNA samples from a pediatric patient with WD and her healthy parents. Mutation screening for ATP7B was performed using direct sequencing, multiplex ligation-dependent probe amplification(MLPA), next-generation sequencing (NGS) and Sanger sequencing of the breakpoint junction sequence. The patient (age, 2.7 years) presented with early-onset hepatic disease. The present study identified compound heterozygous mutations of ATP7B, including a heterozygous mutation (p.Arg1,041Trp) and a novel heterozygous gross deletion of a 57,771 bp fragment (chr13: 52490972-52548742) (GRCh37) from partial exon2- exon21 to external ATP7B sequence (15.833bp) in the patient. Analysis of the family members of the patient showed that the missense mutation and the gross deletion mutation were inherited from her mother and father, respectively. Microhomology and inverted repeat sequences, which may mediate the deletion mutation, were identified through sequence analysis on both sides of the breakpoints of this deletion. The present study provided additional information on the genotypic spectrum of the ATP7B gene, particularly with regard to early onset hepatic disease, as observed in the present patient with WD. The identification of the precise breakpoint junction sequence warrants further investigation of DNA break and recombination mechanisms. In detecting precise deletions, the NGS associated with Sanger sequencing of breakpoint junction sequence have been found to have more advantages than MLPA.
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Affiliation(s)
- Wei-Liang Liu
- Department of Pediatrics, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Fang Li
- Department of Ophthalmology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Lu Liu
- Department of Ophthalmology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Wei Chen
- Department of Ophthalmology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Zhi-Xu He
- Department of Pediatrics, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Hao Gu
- Department of Ophthalmology, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
| | - Rong Ai
- Department of Pediatrics, Affiliated Hospital of Guizhou Medical University, Guiyang, Guizhou 550004, P.R. China
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16
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Li J, Song J, Guo F. miR-186 reverses cisplatin resistance and inhibits the formation of the glioblastoma-initiating cell phenotype by degrading Yin Yang 1 in glioblastoma. Int J Mol Med 2018; 43:517-524. [PMID: 30365062 DOI: 10.3892/ijmm.2018.3940] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2016] [Accepted: 10/08/2018] [Indexed: 11/05/2022] Open
Abstract
Glioblastoma multiforme (GBM) is among the most devastating types of cancer, with a median survival of <1 year. Despite the development of new surgical and radiation techniques, and the use of multiple anti‑neoplastic drugs, effective treatment strategies for malignant gliomas have not yet been developed. The limited efficacy of current treatments reflects the resistance of glioblastoma cells to cytotoxic agents. In this study, using western blot analysis, we found that Yin Yang 1 (YY1) expression was increased in cisplatin‑resistant glioblastoma U87MG cells (U87MG‑CR). We observed that the silencing of YY1 sensitized the U87MG‑CR cells to cisplatin and that the overexpression of YY1 promoted the resistance of LN‑229 glioblastoma cells to cisplatin, as shown by MTT assay. Using sphere formation assay, we also found that the silencing of YY1 inhibited the formation of the glioblastoma‑initiating cell (GIC) phenotype in the U87MG‑CR cells. In addition, the results of RT‑qPCR revealed that miR‑186 expression was decreased in U87MG‑CR cells. Using RT‑PCR and western blot analysis, we observed that overexpression of miR‑186 inhibited YY1 expression in U87MG‑CR cells. The overexpression of miR‑186 also reversed cisplatin resistance and the formation of the GIC phenotype in glioblastoma cells. On the whole, the findings of this study demonstrate that miR‑186 reverses cisplatin resistance and inhibits the formation of the GIC phenotype by degrading YY1 in glioblastoma.
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Affiliation(s)
- Jian Li
- Department of Neurosurgery, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
| | - Jie Song
- Department of Neurosurgery, Yishui Central Hospital, Yishui, Shandong 276400, P.R. China
| | - Feng Guo
- Department of Neurosurgery, Linyi People's Hospital, Linyi, Shandong 276003, P.R. China
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17
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Hunsaker JJ, La'ulu SL, Wyness SP, Genzen JR. Lipemic interference of ceruloplasmin assays – An evaluation of lipid removal methods. Clin Chim Acta 2018; 480:71-78. [DOI: 10.1016/j.cca.2018.01.037] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2017] [Revised: 12/21/2017] [Accepted: 01/20/2018] [Indexed: 11/26/2022]
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18
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Genetic analysis of 55 northern Vietnamese patients with Wilson disease: seven novel mutations in ATP7B. J Genet 2017; 96:933-939. [DOI: 10.1007/s12041-017-0857-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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19
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Katerji M, Barada K, Jomaa M, Kobeissy F, Makkawi AK, Abou-Kheir W, Usta J. Chemosensitivity of U251 Cells to the Co-treatment of D-Penicillamine and Copper: Possible Implications on Wilson Disease Patients. Front Mol Neurosci 2017; 10:10. [PMID: 28197071 PMCID: PMC5281637 DOI: 10.3389/fnmol.2017.00010] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2016] [Accepted: 01/09/2017] [Indexed: 11/24/2022] Open
Abstract
D-Penicillamine (PA), a copper chelator, and one of the recommended drugs for treatment of Wilson disease (WD) has been reported to worsen the symptoms of patients with neurologic presentations. However, the cause of this paradoxical response has not been fully elucidated and requires further investigations. Accordingly, we have studied the in vitro effect of Copper (Cu) and/or PA treatment on human glioblastoma U251 cells as an in vitro model of Cu cytotoxicity. Treatment of U251 cells with either Cu or PA exerted no significant effect on their morphology, viability or ROS level. In contrast, co-treatment with Cu-PA caused a decrease in viability, altered glutathione and ceruloplasmin expression coupled with marked increase in ROS; depolarization of mitochondrial membrane potential; and an increase in Sub G0 phase; along with alpha-Fodrin proteolysis. These findings along with the absence of LDH release in these assays, suggest that combined Cu-PA exposure induced apoptosis in U251 cells. In addition, pre-/or co-treatment with antioxidants showed a protective effect, with catalase being more effective than N-acetyl cysteine or trolox in restoring viability and reducing generated ROS levels. By comparison, a similar analysis using other cell lines showed that rat PC12 cells were resistant to Cu and/or PA treatment, while the neuroblastoma cell line SH-SY5Y was sensitive to either compound alone, resulting in decreased viability and increased ROS level. Taken together, this study shows that glioblastoma U251 cells provide a model for Cu-PA cytotoxicity mediated by H2O2. We postulate that PA oxidation in presence of Cu yields H2O2 which in turn permeates the plasma membrane and induced apoptosis. However, other cell lines exhibited different responses to these treatments, potentially providing a model for cell type- specific cytotoxic responses in the nervous system. The sensitivity of different neural and glial cell types to Cu-PA treatment may therefore underlie the neurologic worsening occurring in some PA-treated WD patients. Our results also raise the possibility that the side effects of PA treatment might be reduced or prevented by administering antioxidants.
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Affiliation(s)
- Meghri Katerji
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut Beirut, Lebanon
| | - Kassem Barada
- Department of Internal Medicine, American University of Beirut Medical Center Beirut, Lebanon
| | - Mustapha Jomaa
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut Beirut, Lebanon
| | - Firas Kobeissy
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut Beirut, Lebanon
| | - Ahmad-Kareem Makkawi
- Department of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut Beirut, Lebanon
| | - Wassim Abou-Kheir
- Department of Anatomy, Cell Biology and Physiological Sciences, Faculty of Medicine, American University of Beirut Beirut, Lebanon
| | - Julnar Usta
- Department of Biochemistry and Molecular Genetics, Faculty of Medicine, American University of Beirut Beirut, Lebanon
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20
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Greenough MA, Ramírez Munoz A, Bush AI, Opazo CM. Metallo-pathways to Alzheimer's disease: lessons from genetic disorders of copper trafficking. Metallomics 2016; 8:831-9. [PMID: 27397642 DOI: 10.1039/c6mt00095a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Copper is an essential metal ion that provides catalytic function to numerous enzymes and also regulates neurotransmission and intracellular signaling. Conversely, a deficiency or excess of copper can cause chronic disease in humans. Menkes and Wilson disease are two rare heritable disorders of copper transport that are characterized by copper deficiency and copper overload, respectively. Changes to copper status are also a common feature of several neurodegenerative disorders including Alzheimer's disease (AD), Parkinson's disease (PD) and Amyotrophic lateral sclerosis (ALS). In the case of AD, which is characterized by brain copper depletion, changes in the distribution of copper has been linked with various aspects of the disease process; protein aggregation, defective protein degradation, oxidative stress, inflammation and mitochondrial dysfunction. Although AD is a multifactorial disease that is likely caused by a breakdown in multiple cellular pathways, copper and other metal ions such as iron and zinc play a central role in many of these cellular processes. Pioneering work by researchers who have studied relatively rare copper transport diseases has shed light on potential metal ion related disease mechanisms in other forms of neurodegeneration such as AD.
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Affiliation(s)
- M A Greenough
- The Florey Institute of Neuroscience and Mental Health, The University of Melbourne, Melbourne, Victoria 3010, Australia.
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21
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Shoshan MS, Tshuva EY. Effective Inhibition of Cellular ROS Production by MXCXXC-Type Peptides: Potential Therapeutic Applications in Copper-Homeostasis Disorders. Chemistry 2016; 22:9077-81. [DOI: 10.1002/chem.201601017] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2016] [Indexed: 01/23/2023]
Affiliation(s)
- Michal S. Shoshan
- Institute of Chemistry; The Hebrew University of Jerusalem; 9190401 Jerusalem Israel
| | - Edit Y. Tshuva
- Institute of Chemistry; The Hebrew University of Jerusalem; 9190401 Jerusalem Israel
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22
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Shoshan MS, Lehman Y, Goch W, Bal W, Tshuva EY, Metanis N. Selenocysteine containing analogues of Atx1-based peptides protect cells from copper ion toxicity. Org Biomol Chem 2016; 14:6979-84. [DOI: 10.1039/c6ob00849f] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Seleno-substituted model peptides of copper metallochaperone proteins display particularly high Cu(i) affinity andin vitroanti-oxidative reactivity.
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Affiliation(s)
| | - Yonat Lehman
- The Hebrew University of Jerusalem
- Jerusalem 9190401
- Israel
| | - Wojciech Goch
- Institute of Biochemistry and Biophysics
- Polish Academy of Sciences
- Warszawa 02106
- Poland
| | - Wojciech Bal
- Institute of Biochemistry and Biophysics
- Polish Academy of Sciences
- Warszawa 02106
- Poland
| | - Edit Y. Tshuva
- The Hebrew University of Jerusalem
- Jerusalem 9190401
- Israel
| | - Norman Metanis
- The Hebrew University of Jerusalem
- Jerusalem 9190401
- Israel
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23
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Wei Z, Huang Y, Liu A, Diao S, Yu Q, Peng Z, Hong M. Mutational characterization of ATP7B gene in 103 Wilson's disease patients from Southern China: identification of three novel mutations. Neuroreport 2014; 25:1075-80. [PMID: 25089800 DOI: 10.1097/wnr.0000000000000216] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Wilson's disease (WD) is an autosomal recessive inheritance disorder of copper metabolism due to mutations in the ATP7B gene. The distribution of ATP7B gene mutations is diverse in different population. This study aimed to examine the genotypes of the ATP7B mutant alleles in WD patients from Southern China. Genomic DNA was extracted from 103 WD patients and 60 healthy patients. Mutations were screened and detected by DNA sequencing. A total of 51 different ATP7B mutations were identified in WD patients, including six homozygous, 51 compound heterozygous, and 39 single heterozygotes. Three mutations were found to be novel, including one missense mutation (c.2549C>T) and two frameshift mutations (c.3851_3876del and c.1057delC). The most frequent mutations are Arg778Leu (18.93%), Ile1148Thr (8.74%), and Pro992Leu (4.37%). Different from the published results of early studies, Ile1148Thr was found to be the second common mutation in our cohort. The highest mutation detection rate was on exon 8 (43.69%), followed by exon 16 (24.27%), and exon 12 (17.48%). The total mutation detection rate on exon 8, 12, and 16 was 85.44%. No ATP7B gene mutation was found in healthy patients. In conclusion, we identified three novel mutations and Ile1148Thr as another hotspot mutation in WD patients from Southern China. Most of the mutations can be detected by screening exon 8, 12, and 16. Our research has further enriched the mutation spectrum of the ATP7B gene in Chinese and may help to develop genetic screening strategies of WD.
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Affiliation(s)
- Zhisheng Wei
- Department of Neurology, The First Affiliated Hospital of Guangdong Pharmaceutical University, Guangzhou, People's Republic of China
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24
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Li XP, Yin JY, Wang Y, He H, Li X, Gong WJ, Chen J, Qian CY, Zheng Y, Li F, Yin T, Gong ZC, Zhou BT, Zhang Y, Xiao L, Zhou HH, Liu ZQ. The ATP7B genetic polymorphisms predict clinical outcome to platinum-based chemotherapy in lung cancer patients. Tumour Biol 2014; 35:8259-65. [PMID: 24852429 DOI: 10.1007/s13277-014-2072-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2014] [Accepted: 05/06/2014] [Indexed: 01/04/2023] Open
Abstract
This study aims to investigate the influence of ATP7B genetic polymorphism to platinum-based chemotherapy in Chinese Han lung cancer patients. A total of 338 Chinese Han lung cancer patients were enrolled in this study. All patients underwent at least two cycles of platinum-based chemotherapy. Four tag SNPs of ATP7B (rs1061472, rs9535826, rs7999812, and rs9535828) were selected to evaluate their impacts to platinum-based chemotherapy in these patients. ATP7B rs9535828 and rs9535826 were found to be associated with platinum resistance in Chinese Han lung cancer patients. Patients with A allele in ATP7B rs9535828 presented an increased susceptibility to platinum drugs (OR 1.96, 95 % CI 1.17-3.30, p < 0.01). Patients with G allele in ATP7B rs9535826 had the highest susceptibility to platinum drugs (OR 2.05, 95 % CI 1.19-3.52, p < 0.01). Our findings suggest that ATP7B genetic polymorphisms could affect the therapeutic efficacy of platinum-based chemotherapy, and ATP7B gene might be considered as predictive markers for the efficacy evaluation of platinum-based chemotherapy in Chinese Han lung cancer patients.
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Affiliation(s)
- Xiang-Ping Li
- Department of Clinical Pharmacology, Xiangya Hospital, Central South University, 410008, Changsha, People's Republic of China
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25
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Treatment with D-penicillamine or zinc sulphate affects copper metabolism and improves but not normalizes antioxidant capacity parameters in Wilson disease. Biometals 2013; 27:207-15. [PMID: 24368744 PMCID: PMC3905172 DOI: 10.1007/s10534-013-9694-3] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2013] [Accepted: 12/11/2013] [Indexed: 12/31/2022]
Abstract
Copper accumulation in tissues due to a biallelic pathogenic mutation of the gene: ATP7B results in a clinical phenotype known as Wilson disease (WD). Aberrations in copper homeostasis can create favourable conditions for superoxide-yielding redox cycling and oxidative tissue damage. Drugs used in WD treatment aim to remove accumulated copper and normalise the free copper concentration in the blood. In the current study the effect of decoppering treatment on copper metabolism and systemic antioxidant capacity parameters was analyzed. Treatment naïve WD patients (TNWD) (n = 33), those treated with anti-copper drugs (TWD) (n = 99), and healthy controls (n = 99) were studied. Both TNWD and TWD patients characterised with decreased copper metabolism parameters, as well as decreased total antioxidant potential (AOP), glutathione (GSH) level, activity of catalase, glutathione peroxidase (GPx), and S-transferase glutathione, compared to controls. TWD patients had significantly lower copper metabolism parameters, higher total AOP and higher levels of GSH than TWD individuals; however, no difference was observed between these two patient groups with respect to the rest of the antioxidant capacity parameters. Patients who had undergone treatment with D-penicillamine or zinc sulphate did not differ with respect to copper metabolism or antioxidant capacity parameters, with the exception of GPx that was lower in D-penicillamine treated individuals. These data suggest that anti-copper treatment affects copper metabolism as well as improves, but does not normalize, natural antioxidant capacity in patients with WD. We propose to undertake studies aimed to evaluate the usefulness of antioxidants as well as selenium as a supplemental therapy in WD.
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Sorbello O, Riccio D, Sini M, Carta M, Demelia L. Resolved Psychosis after Liver Transplantation in a Patient with Wilson's Disease. Clin Pract Epidemiol Ment Health 2011; 7:182-4. [PMID: 22291850 PMCID: PMC3263441 DOI: 10.2174/1745017901107010182] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2010] [Revised: 08/21/2011] [Accepted: 10/08/2011] [Indexed: 12/27/2022]
Abstract
A psychiatric involvement is frequently present in Wilson’s disease. Psychiatric symptoms are sometimes the first and only manifestation of Wilson’s disease. More often a psychiatric involvement is present beside a neurologic or hepatic disease. We describe the case of a 18 years-old male patient who shows a clinic and laboratoristic pattern of cirrhosis and an history of subchronic hallucinatory psychosis, behavioral symptoms and mood disturbances with depressed mood. He hadn’t familiar history of liver or psychiatric disease. Laboratory and imaging tests confirmed the diagnosis of Wilson’s disease with psichiatric involvement. After liver transplantation copper metabolism and liver function normalised and we noticed no recurrency of the psichiatric illness. Very few cases of psychiatric improvement after orthotopic liver transplantation (OLT) has been described until now.
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Affiliation(s)
- Orazio Sorbello
- Reparto di Gastroenterologia Azienda Ospedaliero Universitaria , Cagliari, Italy
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Wang LH, Huang YQ, Shang X, Su QX, Xiong F, Yu QY, Lin HP, Wei ZS, Hong MF, Xu XM. Mutation analysis of 73 southern Chinese Wilson's disease patients: identification of 10 novel mutations and its clinical correlation. J Hum Genet 2011; 56:660-5. [PMID: 21796144 DOI: 10.1038/jhg.2011.76] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
This study was designed to investigate the molecular basis and the correlation between genotype and phenotype in the southern Chinese patients with Wilson's disease (WD). Genotypes of the ATP7B gene in 73 WD patients were examined by denaturing high-performance liquid chromatography (DHPLC) and DNA sequencing. A total of 38 different disease-causing mutations were identified, including 10 novel mutations: missense mutations (p.Gln707Arg, p.Cys1079Phe, p.Gly1149Glu, p.Ser855Tyr, p.Ala874Pro and p.Ser921Arg), nonsense mutation (p.Arg1228Stop), splice-site mutations (2121+3A>T and 3244-2A>G) and frameshift mutation (1875_1876insAATT). We found that a pair of siblings carried the same genotype but different clinical type, and two patients were found to have three mutations. In addition, we compared the clinical data for p.Arg778Leu homozygotes and compound heterozygotes. Our research has enriched the mutation spectrum of the ATP7B gene in the Chinese population and can serve as the basis for genetic counseling and clinical/prenatal diagnosis to prevent WD in China.
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Affiliation(s)
- Li-Hua Wang
- Department of Medical Genetics, School of Basic Medical Sciences, Southern Medical University, Guangzhou, Guangdong, China
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Abstract
In the almost 100 years since Wilson's description of the illness that now bears his name, tremendous advances have been made in our understanding of this disorder. The genetic basis for Wilson's disease - mutation within the ATP7B gene - has been identified. The pathophysiologic basis for the damage resulting from the inability to excrete copper via the biliary system with its consequent gradual accumulation, first in the liver and ultimately in the brain and other organs and tissues, is now known. This has led to the development of effective diagnostic and treatment modalities that, although they may not eliminate the disorder, do provide the means for efficient diagnosis and effective amelioration if carried out in a dedicated and persistent fashion. Nevertheless, Wilson's disease remains both a diagnostic and treatment challenge for physician and patient. Its protean clinical manifestations make diagnosis difficult. Appropriate diagnostic evaluations to confirm the diagnosis and institute treatment can be confusing. In this chapter, the clinical manifestations, diagnostic evaluation, and treatment approaches for Wilson's disease are discussed.
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Affiliation(s)
- Ronald F Pfeiffer
- Department of Neurology, University of Tennessee Health Science Center, Memphis, TN 38163, USA.
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Bucossi S, Mariani S, Ventriglia M, Polimanti R, Gennarelli M, Bonvicini C, Pasqualetti P, Scrascia F, Migliore S, Vernieri F, Rossini PM, Squitti R. Association between the c. 2495 A>G ATP7B Polymorphism and Sporadic Alzheimer's Disease. Int J Alzheimers Dis 2011; 2011:973692. [PMID: 21760992 PMCID: PMC3132548 DOI: 10.4061/2011/973692] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Accepted: 04/01/2011] [Indexed: 01/23/2023] Open
Abstract
Nonceruloplasmin-bound copper (“free”) is reported to be elevated in Alzheimer's disease (AD). In Wilson's disease (WD) Cu-ATPase 7B protein tightly controls free copper body levels. To explore whether the ATP7B gene harbours susceptibility loci for AD, we screened 180 AD chromosomes for sequence changes in exons 2, 5, 8, 10, 14, and 16, where most of the Mediterranean WD-causing mutations lie. No WD mutation, but sequence changes corresponding to c.1216 T>G Single-Nucleotide Polymorphism (SNP) and c.2495 A>G SNP were found. Thereafter, we genotyped 190 AD patients and 164 controls for these SNPs frequencies estimation. Logistic regression analyses revealed either a trend for the c.1216 SNP (P = .074) or a higher frequency for c.2495 SNP of the GG genotype in patients, increasing the probability of AD by 74% (P = .028). Presence of the GG genotype in ATP7B c.2495 could account for copper dysfunction in AD which has been shown to raise the probability of the disease.
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Affiliation(s)
- Serena Bucossi
- Department of Neurology, Campus Bio-Medico University of Rome, 00128 Rome, Italy
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Clinical presentation and mutations in Danish patients with Wilson disease. Eur J Hum Genet 2011; 19:935-41. [PMID: 21610751 DOI: 10.1038/ejhg.2011.80] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023] Open
Abstract
This study describes the clinical presentation and diagnosis in all Danish patients (49, 41 unrelated) with Wilson disease (WND). On the basis of the number of diagnosed patients from 1990-2008, the prevalence was estimated to be 1:49 500. Among routinely used diagnostic tests, none were consistently indicative of WND, with the exception of the 24-h urine-Cu test, which is always outside the normal range. Mutations were identified in 100% of the screened ATP7B alleles (70 unrelated), including five novel mutations: p.1021K; p.G1158V; p.L1304F; IVS20-2A>G; Ex5_6del. In all, 70% of mutations were found in exons 8, 14, 17, 18, and 20. The most frequent mutation, p.H1069Q, comprised 18%. We propose a new and simple model that correlates genotype and age of onset. By assuming that the milder of two mutations is 'functionally dominant' and determines the age of onset, we classified 25/27 mutations as either severe (age of onset <20 years) or moderate (age of onset >20 years), and correctly predicted the age of onset in 37/39 patients. This method should be tested in other Wilson populations.
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Shoshan MS, Tshuva EY. The MXCXXC class of metallochaperone proteins: model studies. Chem Soc Rev 2011; 40:5282-92. [DOI: 10.1039/c1cs15086c] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Abstract
Aerobic organisms are faced with a dilemma. Environmental iron is found primarily in the relatively inert Fe(III) form, whereas the more metabolically active ferrous form is a strong pro-oxidant. This conundrum is solved by the redox cycling of iron between Fe(III) and Fe(II) at every step in the iron metabolic pathway. As a transition metal ion, iron can be "metabolized" only by this redox cycling, which is catalyzed in aerobes by the coupled activities of ferric iron reductases (ferrireductases) and ferrous iron oxidases (ferroxidases).
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Affiliation(s)
- Daniel J Kosman
- Department of Biochemistry, School of Medicine and Biomedical Sciences, University at Buffalo, Buffalo, New York 14214.
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Homozygous mutations in the conserved ATP hinge region of the Wilson disease gene: association with liver disease. J Clin Gastroenterol 2010; 44:432-9. [PMID: 20485189 DOI: 10.1097/mcg.0b013e3181ce5138] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
OBJECTIVE To determine whether any correlation exists between the phenotype and genotype of 2 Lebanese families with members affected with Wilson disease (WD). BACKGROUND WD is an autosomal-recessive disorder of copper transport with significant phenotypic diversity. Most patients are compound heterozygous making it difficult to establish a clear link between phenotype and genotype. STUDY We investigated 14 members from 2 Lebanese families (H and Z) with 5 members affected with WD. Mutation analysis of the ATP7B gene, and clinical assessments were carried out for both families. We also performed a literature search retrieving reported phenotypes of all patients homozygous to mutations in any of the 21 exons of the ATP7B. RESULTS Patients of the H and Z-families were found homozygous for the respective Asn1270Ser and Pro1273Leu mutations in the adenosine triphosphate (ATP) hinge region of exon 18. Of the healthy members, 6 were heterozygous and 3 had normal sequences. Clinically, 4 patients had liver cirrhosis and 1 had asymptomatic transaminitis. One of the patients also had neurologic symptoms. Screening the literature for patients homozygous for mutations in the ATP hinge region identified 25 patients including ours. The overall prevalence of the hepatic phenotype among patients homozygous for mutation in exon 18 was 80% and was significantly higher than those in exons 7, 14, and 21. CONCLUSIONS We hereby report the association of liver disease with homozygous mutations in the conserved ATP hinge region of exon 18 of the ATP7B gene.
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Inoue Y, Matsumoto H, Yamada S, Kawai K, Suemizu H, Gika M, Takanami I, Nakamura M, Iwazaki M. ATP7B expression is associated with in vitro sensitivity to cisplatin in non-small cell lung cancer. Oncol Lett 2010; 1:279-282. [PMID: 22966294 DOI: 10.3892/ol_00000049] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2009] [Accepted: 08/31/2009] [Indexed: 11/05/2022] Open
Abstract
Copper-transporting P-type adenosine triphosphatase (ATP7B) is reportedly associated with platinum drug resistance in various solid tumors. However, the impact of ATP7B on platinum drug resistance in non-small cell lung cancer (NSCLC) remains unclear. We investigated in vitro cisplatin (CDDP) sensitivity using the collagen gel-droplet embedded culture drug sensitivity test. The ATP7B mRNA expression level in each specimen was also examined using real-time polymerase chain reaction. The relationship between ATP7B expression and in vitro CDDP sensitivity was then evaluated. The ATP7B mRNA expression levels in CDDP-resistant tumors were significantly higher than those in the CDDP-sensitive group (p=0.015; Mann-Whitney U test). Our results suggested that ATP7B expression is a promising chemoresistance marker for cisplatin.
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Affiliation(s)
- Yoshimasa Inoue
- Department of General Thoracic Surgery, Tokai University Hachioji Hospital, Tokyo 192-0032
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Rodriguez-Granillo A, Crespo A, Wittung-Stafshede P. Interdomain Interactions Modulate Collective Dynamics of the Metal-Binding Domains in the Wilson Disease Protein. J Phys Chem B 2010; 114:1836-48. [DOI: 10.1021/jp909450x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Agustina Rodriguez-Granillo
- Department of Biochemistry and Cell Biology, Rice University, Houston, Texas 77251, Department of Bioengineering, Rice University, Houston, Texas 77005, and Department of Chemistry, Umeå University, 901 87 Umeå, Sweden
| | - Alejandro Crespo
- Department of Biochemistry and Cell Biology, Rice University, Houston, Texas 77251, Department of Bioengineering, Rice University, Houston, Texas 77005, and Department of Chemistry, Umeå University, 901 87 Umeå, Sweden
| | - Pernilla Wittung-Stafshede
- Department of Biochemistry and Cell Biology, Rice University, Houston, Texas 77251, Department of Bioengineering, Rice University, Houston, Texas 77005, and Department of Chemistry, Umeå University, 901 87 Umeå, Sweden
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Rodriguez-Granillo A, Crespo A, Wittung-Stafshede P. Conformational Dynamics of Metal-Binding Domains in Wilson Disease Protein: Molecular Insights into Selective Copper Transfer. Biochemistry 2009; 48:5849-63. [DOI: 10.1021/bi900235g] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | - Alejandro Crespo
- Department of Bioengineering, Rice University, Houston, 77005 Texas
| | - Pernilla Wittung-Stafshede
- Department of Biochemistry and Cell Biology, Rice University, Houston, 77251 Texas
- Department of Chemistry, Umeå University, 901 87 Umeå, Sweden
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The role of copper in drug-resistant murine and human tumors. Biometals 2008; 22:377-84. [PMID: 18956143 DOI: 10.1007/s10534-008-9174-3] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2008] [Accepted: 10/14/2008] [Indexed: 10/21/2022]
Abstract
Multidrug resistance (MDR) is still a major threat to successful clinical application of cancer chemotherapy. Copper plays an important role in biological systems, and copper is also involved in carcinogenesis. In the present investigation, we addressed the question whether metal copper might be involved in drug resistance of murine and human tumors. By means of atomic absorption spectroscopy, we determined serum copper concentrations. We found that the blood serum of tumor-bearing mice contained higher amounts of copper than healthy mice with tumors. Secondly, mice bearing doxorubicin-resistant Ehrlich ascites carcinoma- or cyclophosphamide-resistant Lewis lung carcinoma contained more copper in their serum than mice bearing the corresponding drug-sensitive parental tumors. Furthermore, the analysis of patients with breast cancer, colon carcinoma or lung cancer showed that the serum copper contents were higher in patients not responding to chemotherapy when compared to patients whose tumors responded to treatment. The copper levels in serum of healthy volunteers were lower than in cancer patients irrespective of their response to chemotherapy. Our results imply that the level of serum copper may be considered as a biomarker for treatment response.
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Squitti R, Quattrocchi CC, Salustri C, Rossini PM. Ceruloplasmin fragmentation is implicated in 'free' copper deregulation of Alzheimer's disease. Prion 2008; 2:23-7. [PMID: 19164917 DOI: 10.4161/pri.2.1.6297] [Citation(s) in RCA: 37] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
A dysfunction in copper homeostasis seems to occur in Alzheimer's disease (AD). We recently demonstrated that an excess of non-ceruloplasmin-copper (i.e., 'free' copper) correlates with the main functional and anatomical deficits as well as the cerebrospinal markers of the disease, thus suggesting that copper contributes to AD neurodegeneration. Aim of this study was to investigate the profile of serum ceruloplasmin isoforms immunoreactive protein in relation to copper dysfunction in AD. Twenty-five AD patients and 25 controls were included in the study. All subjects underwent individual measurements of serum ceruloplasmin and copper concentrations, and the amount of 'free' copper was computed for each copper and ceruloplasmin pair. Serum samples were also pooled and analyzed by two dimensional polyacrylamide gel electrophoresis (2-D PAGE) and western blot analysis. The mean concentration of 'free' copper resulted higher in AD patients than in controls. Ceruloplasmin 2-D PAGE western blot analysis of pooled sera showed in the AD samples low-molecular-weight spots in the <50 kDa range that were not detected in controls' pooled sera (p < 0.029). Our data indicate a ceruloplasmin fragmentation in the serum of AD patients, possibly related to 'free' copper deregulation in this disease.
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Affiliation(s)
- Rosanna Squitti
- AfaR, Department of Neuroscience, Fatebenefratelli Hospital, Isola Tiberina, Rome, Italy.
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Safaei R, Otani S, Larson BJ, Rasmussen ML, Howell SB. Transport of cisplatin by the copper efflux transporter ATP7B. Mol Pharmacol 2007; 73:461-8. [PMID: 17978167 DOI: 10.1124/mol.107.040980] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
ATP7B is a P-type ATPase that mediates the efflux of copper. Recent studies have demonstrated that ATP7B regulates the cellular efflux of cisplatin (DDP) and controls sensitivity to the cytotoxic effects of this drug. To determine whether DDP is a substrate for ATP7B, DDP transport was assayed in vesicles isolated from Sf9 cells infected with a baculovirus that expressed either the wild-type ATP7B or a mutant ATP7B that was unable to transport copper as a result of conversion of the transmembrane metal binding CPC motif to CPA. Only the wild-type ATP7B-expressing vesicles exhibited copper-dependent ATPase activity, copper-induced acyl-phosphate formation, and ATP-dependent transport of copper. The amount of DDP that became bound was higher for vesicles expressing either type of ATP7B than for those not expressing either form of ATP7B, but only the vesicles expressing wild-type ATP7B mediated ATP-dependent accumulation of the drug. At pH 4.6, the vesicles expressing the wild-type ATP7B exhibited ATP-dependent accumulation of DDP with an apparent K(m) of 1.2 +/- 0.5 (S.E.M.) muM and V(max) of 0.03 +/- 0.002 (S.E.M.) nmol/mg of protein/min. DDP also induced the acyl-phosphorylation of ATP7B but at a much slower rate than copper. Copper and DDP each inhibited the ATP-dependent transport of the other. These results establish that DDP is a substrate for ATP7B but is transported at a much slower rate than copper.
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Affiliation(s)
- Roohangiz Safaei
- Department of Medicine, University of California, San Diego, 3855 Health Sciences Drive, La Jolla, CA 92093-0819, USA.
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Gromadzka G, Schmidt HHJ, Genschel J, Bochow B, Rodo M, Tarnacka B, Litwin T, Chabik G, Członkowska A. Frameshift and nonsense mutations in the gene for ATPase7B are associated with severe impairment of copper metabolism and with an early clinical manifestation of Wilson's disease. Clin Genet 2006; 68:524-32. [PMID: 16283883 DOI: 10.1111/j.1399-0004.2005.00528.x] [Citation(s) in RCA: 108] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Wilson's disease (WD) is an autosomal recessive disorder of copper metabolism. The clinical phenotype of the disease is varied. It is proposed that this variation may be a result of differential functional disruption of ATPase7B (ATP7B) resulting from mutations in the gene ATP7B. We aimed to assess the relationship between specific mutational defects in ATP7B and divergence in the phenotypic expression of WD. One hundred and forty-two patients with clinically, biochemically and genetically diagnosed WD were included in the study. The phenotypic expression of WD was compared between patients with different types of mutations in ATP7B, detected by direct sequencing of exons 1-21 of the gene. Twenty-six mutations were identified in ATP7B; eleven of them were mutations predicted to result in the absence of a full-length normal protein [frameshift/nonsense mutations; classified as 'severe' mutations (SMs)], 14 were missense mutations (MMs) and one was a splice site mutation. Patients with one or two SMs on their alleles had lower serum copper and ceruloplasmin and were younger when the first symptoms of the disease appeared, compared with individuals with two MMs. The effect of SMs on the WD phenotype was dose-dependent. It is concluded that mutations within ATP7B are very heterogeneous. Frameshift and nonsense mutations are associated with a severe phenotype of WD.
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Affiliation(s)
- G Gromadzka
- Institute of Psychiatry and Neurology, Second Department of Neurology, Warsaw, Poland.
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Ahn TB, Cho SS, Kim DW, Jeon BS. Absence of nigrostriatal degeneration in LEC rats up to 20 weeks of age. Neurol Res 2005; 27:409-11. [PMID: 15949239 DOI: 10.1179/016164105x48851] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Abstract
BACKGROUND Long-Evans Cinnamon (LEC) rat has a genetic defect of copper metabolism that is similar to human Wilson's disease. We studied the pathological changes in the nigrostriatal system of the LEC rat to examine the feasibility of using the LEC rat as a model of neurological Wilson's disease. METHODS LEC and Long-Evans Agouti (LEA) rats were killed at 12 and 20 weeks of age. FluoroJade B staining and immunohistochemistry were performed and Western blot compared the amount of tyrosine hydroxylase (TH) protein. RESULTS Degenerating neurons were not found in the substantia nigra (SN) and striatum. Dopaminergic neurons were of the same number in the SN of both LEC and LEA rats. Gliosis was of a similar degree in both animals. Western blot showed the same amount of TH protein in both animals. DISCUSSION There was no evidence of neurodegeneration in the nigrostriatal system of the LEC rat up to developmental age 20 weeks. The LEC rat is not a suitable model for deposition of copper in the brain in human Wilson's disease.
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Affiliation(s)
- Tae-Beom Ahn
- Department of Neurology, Kyung Hee University Hospital, Seoul, South Korea
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Myari A, Hadjiliadis N, Fatemi N, Sarkar B. Copper(I) interaction with model peptides of WD6 and TM6 domains of Wilson ATPase: regulatory and mechanistic implications. J Inorg Biochem 2005; 98:1483-94. [PMID: 15337600 DOI: 10.1016/j.jinorgbio.2004.05.013] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2004] [Revised: 05/13/2004] [Accepted: 05/20/2004] [Indexed: 11/20/2022]
Abstract
With the aim to investigate the mechanism of Cu(I) transport by Wilson ATPase (ATP7B), we have studied the interaction of the peptides 2K10p (CH(3)CO-Lys-Gly-Met-Thr-Cys-Ala-Ser-Cys-Val-His-Asn-Lys-CONH(2)), and 2K8p (CH(3)CO-Lys-Leu-Cys-Ile-Ala-Cys-Pro-Cys-Ser-Lys-CONH(2)), part of the sixth metal binding domain (WD6) and the sixth transmembrane segment (TM6) of Wilson ATPase, respectively, by means of CD, NMR spectroscopy and homology modeling. In addition, the interaction of Cu(I) with the 2K8p mutants 1s (CH(3)CO-Lys-Leu-Ser-Ile-Ala-Cys-Pro-Cys-Ser-Lys-CONH(2)), 2s (CH(3)CO-Lys-Leu-Cys-Ile-Ala-Ser-Pro-Cys-Ser-Lys-CONH(2)) and 3s (CH(3)CO-Lys-Leu-Cys-Ile-Ala-Cys-Pro-Ser-Ser-Lys-CONH(2)), containing two cysteines in various positions, have been studied with the same methods, in order to understand the role of each cysteine in copper binding. Our studies show that the three cysteine thiolates present in the 2K8p peptide sequence act mainly as bridging ligands for Cu(I) binding, and dithiothreitol acts as an important ligand in Cu(I) ligation by 2K10p and the 2K8p mutants. Formation of oligomeric species has been evidenced for all peptides except 2s. Shift of the equilibrium between the various oligomeric species has been accomplished by reducing the Cu(I):peptide ratio. Significant shifts of proline protons upon interaction with Cu(I) have been observed for all proline containing peptides implying a possible role of proline in facilitating Cu(I) binding. These findings have been further discussed with respect to the molecular basis of copper trafficking and intermolecular interactions.
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Affiliation(s)
- Alexandra Myari
- Department of Chemistry, University of Ioannina, Ioannina 45110, Greece
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Aida T, Takebayashi Y, Shimizu T, Okamura C, Higasimoto M, Kanzaki A, Nakayama K, Terada K, Sugiyama T, Miyazaki K, Ito K, Takenoshita S, Yaegashi N. Expression of copper-transporting P-type adenosine triphosphatase (ATP7B) as a prognostic factor in human endometrial carcinoma. Gynecol Oncol 2005; 97:41-5. [PMID: 15790435 DOI: 10.1016/j.ygyno.2004.12.042] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2004] [Indexed: 11/24/2022]
Abstract
OBJECTIVE Copper-transporting P-type adenosine triphosphate (ATP7B) has been reported to be associated with cisplatin resistance in vitro. However, the clinical significance of this transporter has not previously been addressed in endometrial carcinoma. Our goal was to investigate if ATP7B is expressed in endometrial carcinoma and whether its expression correlates with prognosis. METHODS We performed immunohistochemical analysis of ATP7B using a monoclonal antibody against ATP7B in 51 endometrial endometrioid adenocarcinomas. 27 of 51 patients were treated with cisplatin-based chemotherapy after surgery. RESULTS Cytoplasmic staining of tumor cells was observed in 37.3% (19/51 cases) of the analyzed carcinomas and no staining was observed in adjacent non-neoplastic cells. ATP7B positivity in the degree of differentiation of G2 and G3 carcinoma was significantly higher than that of G1 carcinoma (P = 0.019). The patients with ATP7B-positive tumors had a worse prognosis than that with ATP7B-negative tumors in overall survival and disease-free survival, respectively (P < 0.01). CONCLUSIONS These findings suggest that overexpression of ATP7B expression in endometrial carcinoma is correlated with unfavorable clinical outcome in patients treated with cisplatin-based chemotherapy. ATP7B expression could be considered as a prognostic factor in patients with endometrial carcinoma.
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Affiliation(s)
- Takeshi Aida
- Department of Surgery II, Fukushima Medical University, Fukushima, Hikarigaoka 1, 960-1295, Japan
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Marcellini M, Di Ciommo V, Callea F, Devito R, Comparcola D, Sartorelli MR, Carelli G, Carelli F, Nobili V. Treatment of Wilson’s disease with zinc from the time of diagnosis in pediatric patients: A single-hospital, 10-year follow-up study. ACTA ACUST UNITED AC 2005; 145:139-43. [PMID: 15871305 DOI: 10.1016/j.lab.2005.01.007] [Citation(s) in RCA: 91] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Wilson's disease (WD) is an inherited disorder of copper metabolism characterized by a failure of the liver to excrete copper, leading to its accumulation in the liver, brain, cornea, and kidney, with resulting chronic degenerative changes. It is generally accepted that "presymptomatic" patients--in whom WD is diagnosed in childhood and who are defined as those who, although still asymptomatic, do have liver disease, as indicated by increased serum concentrations of transaminases--should be treated prophylactically. Here we report our results in 22 children treated with continuous oral zinc therapy for 10 years. Zinc sulfate was administered at a dosage of 25 mg elemental zinc twice a day until the age of 6 years, 25 mg three times a day between the ages of 7 and 16 years or until the child attained a body weight of 125 lb, and 50 mg three times a day thereafter. Five years after the start of zinc treatment, we noted highly significant decreases in alanine aminotransferase (ALT), aspartate aminotransferase (AST), and urinary copper excretion, but white blood cell counts did not vary significantly. Six of 22 patients continued to demonstrate greater-than-normal ALT concentrations and only 1 patient demonstrated an ALT concentration more than 1.5 times the upper normal limit. Further decreases in ALT, AST, and urinary copper excretion were observed at the end of the 10-year follow-up, but these decreases were not statistically significant. Only 1 patient continued to demonstrate abnormal ALT levels. Again, white blood cells showed no significant variations. All histologic scores (steatosis, inflammation, and fibrosis) were significantly decreased after treatment. Hepatic copper content was also significantly decreased, although it remained higher than normal in all patients. The removal of toxic copper was confirmed by disappearance of Kayser-Fleischer rings in 3 patients. Zinc did not have adverse effects on growth. The efficacy of zinc in WD in presymptomatic pediatric patients has been established in previous studies, and our study adds considerably to the earlier findings because it includes a large number of very young children, as many as 11 younger than 6 years and 20 younger than 10. The excellent clinical results in all patients, coupled with the improvement in hepatic histologic findings in the vast majority, indicate convincingly that zinc treatment can control the disease effectively and safely, preventing its progression over the course of 10 years. Histologic findings reportedly improved in 3 patients treated in an earlier study, but our data are numerically much more relevant. Notably, histologic study of the liver revealed that copper concentration was reduced by treatment, suggesting that oral zinc was able not only to prevent further accumulation of copper but also to promote, at least in part, the depletion of its stores. The lack of adverse effects of zinc on growth suggests that our patients received enough anticopper therapy to prevent damage resulting from copper toxicity but an adequate amount of copper for proper growth and development. In conclusion, our findings indicate that zinc is the treatment of choice in presymptomatic pediatric patients with WD.
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Affiliation(s)
- Matilde Marcellini
- Department of Liver Disease, Children's Hospital Bambino Gesù, P.za S. Onofrio, 4, 00165 Rome
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Nakayama K, Kanzaki A, Terada K, Mutoh M, Ogawa K, Sugiyama T, Takenoshita S, Itoh K, Yaegashi N, Miyazaki K, Neamati N, Takebayashi Y. Prognostic value of the Cu-transporting ATPase in ovarian carcinoma patients receiving cisplatin-based chemotherapy. Clin Cancer Res 2004; 10:2804-11. [PMID: 15102688 DOI: 10.1158/1078-0432.ccr-03-0454] [Citation(s) in RCA: 82] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
PURPOSE A major obstacle in the treatment of ovarian carcinoma is the intrinsic/acquired resistance to cisplatin-based chemotherapy. Cu-transporting ATPase (ATP7B) has been reported to be associated with cisplatin resistance in vitro. However, the clinical significance of this transporter has not previously been addressed. Our goal was to investigate ATP7B expression in ovarian carcinoma and whether its expression correlates with prognosis and reduced responsiveness to cisplatin treatment. EXPERIMENTAL DESIGN We retrospectively examined the expression of ATP7B and p53 in primary ovarian carcinoma and its association with chemotherapeutic effect. Tissues were surgically removed from 104 ovarian carcinomas patients who received cisplatin-based chemotherapy. We performed immunohistochemical analysis of ATP7B and p53 using a monoclonal antibody against ATP7B and DO7 antibody against p53 protein in 104 ovarian carcinomas and adjacent nonneoplastic tissues. The significance of ATP7B and p53 in the prognosis of patients with ovarian carcinomas was also examined in the survival analysis of mortality follow-up data covering the period between 1988 and 2001. Furthermore, mutation analysis at the six Cu-binding domain and ATP-binding domain, which may be important for cisplatin transport, were performed using single-strand conformational polymorphism after reverse transcriptase-PCR. RESULTS A variable degree of cytoplasmic staining of ATP7B in tumor cells was observed in 34.6% (36 of 104 cases) of the analyzed carcinomas. ATP7B expression was not observed in adjacent nonneoplastic tissues. ATP7B positivity in poorly/moderately differentiated carcinoma was significantly higher than that in low malignant potential tumor/well-differentiated carcinoma (P = 0.0276). Patients with ATP7B-positive tumors had a significantly inferior response to chemotherapy compared with the patients with ATP7B-negative tumors (P = 0.025). The multivariate Cox regression analysis revealed that ATP7B expression (hazard ratio, 1.8; 95% confidence interval, 1.0-3.2, P = 0.048), as well as International Federation of Gynecologists and Obstetricians stage (hazard ratio, 2.0; 95% confidence interval, 1.1-3.6, P = 0.018), was prognostic for poor disease outcome after adjustment for p53 expression, grade, and residual tumor. p53 expression was detected in 31.5% (26/104 cases). No mutation was observed on the six Cu-binding domain or ATP-binding domain in human ovarian carcinomas expressing ATP7B gene. CONCLUSIONS This study demonstrates that overexpression of ATP7B in ovarian carcinoma is correlated with unfavorable clinical outcome in patients treated with cisplatin-based chemotherapy. Therefore, ATP7B expression may be considered as a predictive marker of chemoresistance for cisplatin-based chemotherapy in patients with ovarian carcinoma. We further predict that drugs targeting ATP7B might be useful in combination with cisplatin-based regimen for the improvement of patients with ovarian carcinoma.
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Affiliation(s)
- Kentaro Nakayama
- Department of Obstetrics, Shimane Medical University, Izumo, Japan
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Abstract
Wilson disease (WD) is an autosomal recessive disorder of copper metabolism. Since daily copper intake exceeds the body's requirements, effective means of excreting excess copper are essential. These are accomplished by ATP7B, a new member of the cation-transporting p-type ATPase family, which is mainly expressed in the liver and mediates both copper secretion into plasma (coupled with ceruloplasmin synthesis) and its excretion into bile. Thus far, more than 200 mutations of the WD gene have been detected, causing impairment of ATP7B function and, ultimately, copper accumulation. Excess copper, however, induces free-radical reactions and lipid peroxidation. Resultant liver damage leads to steatosis, inflammation, cirrhosis, and, occasionally, fulminant liver failure. The diagnosis of WD is commonly made on the basis of typical clinical and laboratory findings, including low serum ceruloplasmin, increased urinary copper excretion, and increased hepatic copper content. Since liver morphology is non-specific, and copper histochemistry may lead to both false-negative and false-positive results, the pathologist usually only suspects the disease or assists in its confirmation. Although the value of molecular genetic testing is limited due to the high number of possible gene mutations, polymerase chain reaction may be useful for the evaluation of family members of homozygous index patients.
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Affiliation(s)
- Cord Langner
- Institute of Pathology, Medical University of Graz, Auenbruggerplatz 25, 8036 Graz, Austria.
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Miyashita H, Nitta Y, Mori S, Kanzaki A, Nakayama K, Terada K, Sugiyama T, Kawamura H, Sato A, Morikawa H, Motegi K, Takebayashi Y. Expression of copper-transporting P-type adenosine triphosphatase (ATP7B) as a chemoresistance marker in human oral squamous cell carcinoma treated with cisplatin. Oral Oncol 2003; 39:157-62. [PMID: 12509969 DOI: 10.1016/s1368-8375(02)00038-6] [Citation(s) in RCA: 57] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An important clinical problem in the treatment of oral squamous cell carcinoma is the intrinsic/acquired resistance to cisplatin-based chemotherapy. Copper-transporting P-type adenosine triphosphate (ATP7B) has been reported to be associated with cisplatin resistance in vitro (Komatsu et al., Cancer Res 60, 1312-1316,2000). However, the clinical significance of this transporter has not previously been addressed. Our aim of this study was to investigate if ATP7B is expressed in oral squamous cell carcinoma and whether its expression correlates with prognosis and reduced responsiveness to cisplatin treatment. Biopsy tissues were obtained from the tumors of 70 patients with oral SCC, and 51 patients received cisplatin-based preoperative chemotherapy. We performed immunohistochemical analysis of ATP7B using monoclonal antibody against ATP7B in 51 oral SCC and adjacent neoplastic tissues. The significance of ATP7B in the prognosis of patients with oral SCC was also examined in the survival analysis of mortality follow-up data covering the period 1991 through 2000. We retrospectively examined the expression of ATP7B in primary oral SCC carcinoma and its association with chemotherapeutic effect. A variable degree of cytoplasmic staining of tumor cells was observed in 54.9% (28/51 cases) of the analyzed carcinomas. Patients with ATP7B-positive tumors had a significantly inferior response to chemotherapy compared with the patients with ATP7B-negative tumors (P = 0.03). The patients who received cisplatin-based chemotherapy with ATP7B-positive carcinomas had a significantly poorer overall survival than those with ATP7B-negative tumors (P = 0.015). These findings suggest that high levels of ATP7B expression in oral SCC are associated with unfavorable clinical outcome in patients with oral SCCs treated with cisplatin-based chemotherapy. ATP7B expression may be a preoperative indicator for a choice of cisplatin in some patients.
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Affiliation(s)
- Hitoshi Miyashita
- Department of Pathology, Institute of Development, Aging and Cancer, Tohoku University, Aobaku, Seiryomachi 4-1, Sendai 980-8575, Japan
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Ohbu M, Ogawa K, Konno S, Kanzaki A, Terada K, Sugiyama T, Takebayashi Y. Copper-transporting P-type adenosine triphosphatase (ATP7B) is expressed in human gastric carcinoma. Cancer Lett 2003; 189:33-8. [PMID: 12445675 DOI: 10.1016/s0304-3835(02)00462-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
This study describes the first report that a copper-transporting P-type adenosine triphosphatase, ATP7B, is expressed in human gastric carcinomas. Herein, we investigated the hypothesis that ATP7B, which was shown to be associated with cisplatin resistance in vitro, is expressed in certain gastric carcinomas. To test this hypothesis, ATP7B expression level was examined in 51 gastric carcinomas by immunohistochemistry. ATP7B protein could be detected in 41.2% (21/51) of gastric carcinoma by immunohistochemical analysis. In ATP7B-positive tumors, adjacent non-neoplastic tissue was similarly analyzed, revealing that ATP7B is upregulated in gastric carcinoma. ATP7B expression in poorly differentiated/undifferentiated carcinoma was significantly higher than that in well/moderately-differentiated carcinoma (P=0.0278). These findings suggested that ATP7B expression might be a chemoresistance marker against cisplatin in some patients with poorly differentiated/undifferentiated gastric carcinoma.
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Affiliation(s)
- Masahide Ohbu
- Department of Pathology, Institute of Development, Aging and Cancer, Tohoku University, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8570, Japan
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Steveson TC, Ciccotosto GD, Ma XM, Mueller GP, Mains RE, Eipper BA. Menkes protein contributes to the function of peptidylglycine alpha-amidating monooxygenase. Endocrinology 2003; 144:188-200. [PMID: 12488345 DOI: 10.1210/en.2002-220716] [Citation(s) in RCA: 78] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Menkes protein (ATP7A) is a P-type ATPase involved in copper uptake and homeostasis. Disturbed copper homeostasis occurs in patients with Menkes disease, an X-linked disorder characterized by mental retardation, neurodegeneration, connective tissue disorders, and early childhood death. Mutations in ATP7A result in malfunction of copper-requiring enzymes, such as tyrosinase and copper/zinc superoxide dismutase. The first step of the two-step amidation reaction carried out by peptidylglycine alpha-amidating monooxygenase (PAM) also requires copper. We used tissue from wild-type rats and mice and an ATP7A-specific antibody to determine that ATP7A is expressed at high levels in tissues expressing high levels of PAM. ATP7A is largely localized to the trans Golgi network in pituitary endocrine cells. The Atp7a mouse, bearing a mutation in the Atp7a gene, is an excellent model system for examining the consequences of ATP7A malfunction. Despite normal levels of PAM protein, levels of several amidated peptides were reduced in pituitary and brain extracts of Atp7a mice, demonstrating that PAM function is compromised when ATP7A is inactive. Based on these results, we conclude that a reduction in the ability of PAM to produce bioactive end-products involved in neuronal growth and development could contribute to many of the biological effects associated with Menkes disease.
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Affiliation(s)
- Tami C Steveson
- Department of Neuroscience,, University of Connecticut Health Center, Farmington, Connecticut 06030-3401, USA
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Gasser T, Bressman S, Dürr A, Higgins J, Klockgether T, Myers RH. State of the art review: molecular diagnosis of inherited movement disorders. Movement Disorders Society task force on molecular diagnosis. Mov Disord 2003; 18:3-18. [PMID: 12518296 DOI: 10.1002/mds.10338] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022] Open
Abstract
This review is designed to provide practical help for the clinical neurologist to make appropriate use of the possibilities of molecular diagnosis of inherited movement disorders. Huntington's disease, Parkinson's disease and parkinsonian syndromes, ataxias, Wilson disease, essential tremor, dystonias, and other genetic diseases associated with a variety of movement disorders are considered separately.
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Affiliation(s)
- Thomas Gasser
- Department of Neurology, Klinikum Grosshadern, Ludwig-Maximilians-University, Munich, Germany.
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