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Sailer J, Nagel J, Akdogan B, Jauch AT, Engler J, Knolle PA, Zischka H. Deadly excess copper. Redox Biol 2024; 75:103256. [PMID: 38959622 DOI: 10.1016/j.redox.2024.103256] [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: 04/27/2024] [Revised: 06/13/2024] [Accepted: 06/23/2024] [Indexed: 07/05/2024] Open
Abstract
Higher eukaryotes' life is impossible without copper redox activity and, literally, every breath we take biochemically demonstrates this. However, this dependence comes at a considerable price to ensure target-oriented copper action. Thereto its uptake, distribution but also excretion are executed by specialized proteins with high affinity for the transition metal. Consequently, malfunction of copper enzymes/transporters, as is the case in hereditary Wilson disease that affects the intracellular copper transporter ATP7B, comes with serious cellular damage. One hallmark of this disease is the progressive copper accumulation, primarily in liver but also brain that becomes deadly if left untreated. Such excess copper toxicity may also result from accidental ingestion or attempted suicide. Recent research has shed new light into the cell-toxic mechanisms and primarily affected intracellular targets and processes of such excess copper that may even be exploited with respect to cancer therapy. Moreover, new therapies are currently under development to fight against deadly toxic copper.
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Affiliation(s)
- Judith Sailer
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine and Health, Munich, Germany
| | - Judith Nagel
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine and Health, Munich, Germany
| | - Banu Akdogan
- Institute of Molecular Toxicology and Pharmacology, Helmholtz Munich, German Research Center for Environmental Health, Neuherberg, Germany
| | - Adrian T Jauch
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine and Health, Munich, Germany
| | - Jonas Engler
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine and Health, Munich, Germany
| | - Percy A Knolle
- Institute of Molecular Immunology and Experimental Oncology, Technical University Munich, School of Medicine and Health, Munich, Germany
| | - Hans Zischka
- Institute of Toxicology and Environmental Hygiene, Technical University Munich, School of Medicine and Health, Munich, Germany; Institute of Molecular Toxicology and Pharmacology, Helmholtz Munich, German Research Center for Environmental Health, Neuherberg, Germany.
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Physical exercise positively modulates DOX-induced hepatic oxidative stress, mitochondrial dysfunction and quality control signaling. Mitochondrion 2019; 47:103-113. [DOI: 10.1016/j.mito.2019.05.008] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Revised: 01/31/2019] [Accepted: 05/30/2019] [Indexed: 01/28/2023]
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Campo DS, Nayak V, Srinivasamoorthy G, Khudyakov Y. Entropy of mitochondrial DNA circulating in blood is associated with hepatocellular carcinoma. BMC Med Genomics 2019; 12:74. [PMID: 31167647 PMCID: PMC6551242 DOI: 10.1186/s12920-019-0506-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
Background Ultra-Deep Sequencing (UDS) enabled identification of specific changes in human genome occurring in malignant tumors, with current approaches calling for the detection of specific mutations associated with certain cancers. However, such associations are frequently idiosyncratic and cannot be generalized for diagnostics. Mitochondrial DNA (mtDNA) has been shown to be functionally associated with several cancer types. Here, we study the association of intra-host mtDNA diversity with Hepatocellular Carcinoma (HCC). Results UDS mtDNA exome data from blood of patients with HCC (n = 293) and non-cancer controls (NC, n = 391) were used to: (i) measure the genetic heterogeneity of nucleotide sites from the entire population of intra-host mtDNA variants rather than to detect specific mutations, and (ii) apply machine learning algorithms to develop a classifier for HCC detection. Average total entropy of HCC mtDNA is 1.24-times lower than of NC mtDNA (p = 2.84E-47). Among all polymorphic sites, 2.09% had a significantly different mean entropy between HCC and NC, with 0.32% of the HCC mtDNA sites having greater (p < 0.05) and 1.77% of the sites having lower mean entropy (p < 0.05) as compared to NC. The entropy profile of each sample was used to further explore the association between mtDNA heterogeneity and HCC by means of a Random Forest (RF) classifier The RF-classifier separated 232 HCC and 232 NC patients with accuracy of up to 99.78% and average accuracy of 92.23% in the 10-fold cross-validation. The classifier accurately separated 93.08% of HCC (n = 61) and NC (n = 159) patients in a validation dataset that was not used for the RF parameter optimization. Conclusions Polymorphic sites contributing most to the mtDNA association with HCC are scattered along the mitochondrial genome, affecting all mitochondrial genes. The findings suggest that application of heterogeneity profiles of intra-host mtDNA variants from blood may help overcome barriers associated with the complex association of specific mutations with cancer, enabling the development of accurate, rapid, inexpensive and minimally invasive diagnostic detection of cancer.
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Affiliation(s)
- David S Campo
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, GA, USA.
| | - Vishal Nayak
- Office of Advanced Molecular Detection, Centers for Disease Control and Prevention, Atlanta, GA, USA.,CSRA, Inc, Corporate Blvd NE, Atlanta, GA, USA
| | - Ganesh Srinivasamoorthy
- Office of Advanced Molecular Detection, Centers for Disease Control and Prevention, Atlanta, GA, USA.,CSRA, Inc, Corporate Blvd NE, Atlanta, GA, USA
| | - Yury Khudyakov
- Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, GA, USA
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El-Sheikh RM, Mansy SS, Nessim IG, Hosni HN, El Hindawi A, Hassanein MH, AbdelFattah AS. Carbamoyl phosphate synthetase 1 (CPS1) as a prognostic marker in chronic hepatitis C infection. APMIS 2019; 127:93-105. [PMID: 30698308 DOI: 10.1111/apm.12917] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Accepted: 12/08/2018] [Indexed: 12/11/2022]
Abstract
This study aims to assess the value of carbamoyl phosphate synthetase 1 (CPS1), as a non-invasive serum marker, for the evolution of chronic HCV infection and hepatic fibrosis. Seventy-two patients with HCV positive serum RNA and 15 health volunteers were enrolled in this study. Out of 72 patients, 10 patients had decompensated liver with ascites. Quantitative analysis of CPS1 was performed in the harvested sera and corresponding liver biopsies using ELISA and immunohistochemistry techniques respectively. Also, mitochondrial count using electron microscopy, urea analysis and conventional liver tests were done. Patients were grouped into (F1 + F2) and (F3 + F4) representing stages of moderate and severe fibrosis respectively. Tissue and serum CPS1 (s.CPS1) correlated significantly in moderate and severe fibrosis. Patients with severe fibrosis showed significantly higher levels of s.CPS1 (p-value ≤ 0.05) and significantly lower mitochondrial counts (p-value = 0.0065) than those with moderate fibrosis. S.urea positively correlated with s.CPS1 only in the decompensated group, at which s.urea reached maximal levels. In conclusion, s.CPS1 is a potential non-invasive marker for the assessment of severity and progression of HCV in relation to mitochondrial dysfunction. Also, increased s.urea with the progression of the disease is mainly due to a concurrent renal malfunction, which needs further investigation.
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Affiliation(s)
- Ranya M El-Sheikh
- Electron Microscopy Research Department (Pathology), Theodor Bilharz Research Institute, Giza, Egypt
| | - Soheir S Mansy
- Electron Microscopy Research Department (Pathology), Theodor Bilharz Research Institute, Giza, Egypt
| | - Iris G Nessim
- Clinical Chemistry Department, Theodor Bilharz Research Institute, Giza, Egypt
| | - Hala N Hosni
- Faculty of Medicine, Pathology Department, Cairo University, Cairo, Egypt
| | - Ali El Hindawi
- Faculty of Medicine, Pathology Department, Cairo University, Cairo, Egypt
| | - Moataz H Hassanein
- Hepatogastroenterology Department, Theodor Bilharz Research Institute, Giza, Egypt
| | - Ahmed S AbdelFattah
- Hepatogastroenterology Department, Theodor Bilharz Research Institute, Giza, Egypt
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Campo DS, Roh HJ, Pearlman BL, Fierer DS, Ramachandran S, Vaughan G, Hinds A, Dimitrova Z, Skums P, Khudyakov Y. Increased Mitochondrial Genetic Diversity in Persons Infected With Hepatitis C Virus. Cell Mol Gastroenterol Hepatol 2016; 2:676-684. [PMID: 28174739 PMCID: PMC5042856 DOI: 10.1016/j.jcmgh.2016.05.012] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2016] [Accepted: 05/15/2016] [Indexed: 12/22/2022]
Abstract
BACKGROUND & AIMS The host genetic environment contributes significantly to the outcomes of hepatitis C virus (HCV) infection and therapy response, but little is known about any effects of HCV infection on the host beyond any changes related to adaptive immune responses. HCV persistence is associated strongly with mitochondrial dysfunction, with liver mitochondrial DNA (mtDNA) genetic diversity linked to disease progression. METHODS We evaluated the genetic diversity of 2 mtDNA genomic regions (hypervariable segments 1 and 2) obtained from sera of 116 persons using next-generation sequencing. RESULTS Results were as follows: (1) the average diversity among cases with seronegative acute HCV infection was 4.2 times higher than among uninfected controls; (2) the diversity level among cases with chronic HCV infection was 96.1 times higher than among uninfected controls; and (3) the diversity was 23.1 times higher among chronic than acute cases. In 2 patients who were followed up during combined interferon and ribavirin therapy, mtDNA nucleotide diversity decreased dramatically after the completion of therapy in both patients: by 100% in patient A after 54 days and by 70.51% in patient B after 76 days. CONCLUSIONS HCV infection strongly affects mtDNA genetic diversity. A rapid decrease in mtDNA genetic diversity observed after therapy-induced HCV clearance suggests that the effect is reversible, emphasizing dynamic genetic relationships between HCV and mitochondria. The level of mtDNA nucleotide diversity can be used to discriminate recent from past infections, which should facilitate the detection of recent transmission events and thus help identify modes of transmission.
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Key Words
- AUC, area under the curve
- Disease Biomarkers
- HCC, hepatocellular carcinoma
- HCV, hepatitis C virus
- HIV, human immunodeficiency virus
- HVS, hypervariable segment
- IFN, interferon
- NGS, next-generation sequencing
- Noninvasive
- PCR, polymerase chain reaction
- ROC, receiver operating characteristic
- mtDNA
- mtDNA, mitochondrial DNA
- pegIFN, peginterferon
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Affiliation(s)
- David S. Campo
- Laboratory of Molecular Epidemiology and Bioinformatics, Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia,Correspondence Address correspondence to: David S. Campo, PhD, Centers for Disease Control and Prevention, 1600 Clifton Road, MS A33, Atlanta, Georgia 30329. fax: (404) 639-1563.Centers for Disease Control and Prevention1600 Clifton RoadMS A33AtlantaGeorgia 30329
| | - Ha-Jung Roh
- Laboratory of Molecular Epidemiology and Bioinformatics, Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Brian L. Pearlman
- Center for Hepatitis C, Atlanta Medical Center, Atlanta, Georgia,Medical College of Georgia, Augusta, Georgia,Emory School of Medicine, Atlanta, Georgia
| | - Daniel S. Fierer
- Division of Infectious Diseases, Icahn School of Medicine at Mount Sinai, New York, New York
| | - Sumathi Ramachandran
- Laboratory of Molecular Epidemiology and Bioinformatics, Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Gilberto Vaughan
- Laboratory of Molecular Epidemiology and Bioinformatics, Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Andrew Hinds
- Center for Hepatitis C, Atlanta Medical Center, Atlanta, Georgia
| | - Zoya Dimitrova
- Laboratory of Molecular Epidemiology and Bioinformatics, Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Pavel Skums
- Laboratory of Molecular Epidemiology and Bioinformatics, Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia
| | - Yury Khudyakov
- Laboratory of Molecular Epidemiology and Bioinformatics, Division of Viral Hepatitis, Centers for Disease Control and Prevention, Atlanta, Georgia
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