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Aguilar K, Jakubek P, Zorzano A, Wieckowski MR. Primary mitochondrial diseases: The intertwined pathophysiology of bioenergetic dysregulation, oxidative stress and neuroinflammation. Eur J Clin Invest 2024; 54:e14217. [PMID: 38644687 DOI: 10.1111/eci.14217] [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: 02/27/2024] [Revised: 04/02/2024] [Accepted: 04/03/2024] [Indexed: 04/23/2024]
Abstract
OBJECTIVES AND SCOPE Primary mitochondrial diseases (PMDs) are rare genetic disorders resulting from mutations in genes crucial for effective oxidative phosphorylation (OXPHOS) that can affect mitochondrial function. In this review, we examine the bioenergetic alterations and oxidative stress observed in cellular models of primary mitochondrial diseases (PMDs), shedding light on the intricate complexity between mitochondrial dysfunction and cellular pathology. We explore the diverse cellular models utilized to study PMDs, including patient-derived fibroblasts, induced pluripotent stem cells (iPSCs) and cybrids. Moreover, we also emphasize the connection between oxidative stress and neuroinflammation. INSIGHTS The central nervous system (CNS) is particularly vulnerable to mitochondrial dysfunction due to its dependence on aerobic metabolism and the correct functioning of OXPHOS. Similar to other neurodegenerative diseases affecting the CNS, individuals with PMDs exhibit several neuroinflammatory hallmarks alongside neurodegeneration, a pattern also extensively observed in mouse models of mitochondrial diseases. Based on histopathological analysis of postmortem human brain tissue and findings in mouse models of PMDs, we posit that neuroinflammation is not merely a consequence of neurodegeneration but a potential pathogenic mechanism for disease progression that deserves further investigation. This recognition may pave the way for novel therapeutic strategies for this group of devastating diseases that currently lack effective treatments. SUMMARY In summary, this review provides a comprehensive overview of bioenergetic alterations and redox imbalance in cellular models of PMDs while underscoring the significance of neuroinflammation as a potential driver in disease progression.
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Affiliation(s)
- Kevin Aguilar
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona, Spain
| | - Patrycja Jakubek
- Laboratory of Mitochondrial Biology and Metabolism, Nencki Institute of Experimental Biology PAS, Warsaw, Poland
| | - Antonio Zorzano
- Institute for Research in Biomedicine (IRB Barcelona), Barcelona, Spain
- Departament de Bioquímica i Biomedicina Molecular, Universitat de Barcelona, Barcelona, Spain
- CIBER de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
| | - Mariusz R Wieckowski
- Laboratory of Mitochondrial Biology and Metabolism, Nencki Institute of Experimental Biology PAS, Warsaw, Poland
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Lhuissier C, Desquiret-Dumas V, Girona A, Alban J, Faure J, Cassereau J, Codron P, Lenaers G, Baris OR, Gueguen N, Chevrollier A. Mitochondrial F0F1-ATP synthase governs the induction of mitochondrial fission. iScience 2024; 27:109808. [PMID: 38741710 PMCID: PMC11089353 DOI: 10.1016/j.isci.2024.109808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2023] [Revised: 12/22/2023] [Accepted: 04/22/2024] [Indexed: 05/16/2024] Open
Abstract
Mitochondrial dynamics is a process that balances fusion and fission events, the latter providing a mechanism for segregating dysfunctional mitochondria. Fission is controlled by the mitochondrial membrane potential (ΔΨm), optic atrophy 1 (OPA1) cleavage, and DRP1 recruitment. It is thought that this process is closely linked to the activity of the mitochondrial respiratory chain (MRC). However, we report here that MRC inhibition does not decrease ΔΨm nor increase fission, as evidenced by hyperconnected mitochondria. Conversely, blocking F0F1-ATP synthase activity induces fragmentation. We show that the F0F1-ATP synthase is sensing the inhibition of MRC activity by immediately promoting its reverse mode of action to hydrolyze matrix ATP and restoring ΔΨm, thus preventing fission. While this reverse mode is expected to be inhibited by the ATPase inhibitor ATPIF1, we show that this sensing is independent of this factor. We have unraveled an unexpected role of F0F1-ATP synthase in controlling the induction of fission by sensing and maintaining ΔΨm.
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Affiliation(s)
- Charlène Lhuissier
- University Angers, MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers, France
| | - Valérie Desquiret-Dumas
- University Angers, MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers, France
- Departments of Biochemistry and Molecular Biology, University Hospital Angers, Angers, France
| | - Anaïs Girona
- University Angers, MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers, France
| | - Jennifer Alban
- Departments of Biochemistry and Molecular Biology, University Hospital Angers, Angers, France
| | - Justine Faure
- Departments of Biochemistry and Molecular Biology, University Hospital Angers, Angers, France
| | - Julien Cassereau
- University Angers, MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers, France
- Department of Neurology, Angers University Hospital, Angers, France
| | - Philippe Codron
- University Angers, MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers, France
- Department of Neurology, Angers University Hospital, Angers, France
| | - Guy Lenaers
- University Angers, MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers, France
- Department of Neurology, Angers University Hospital, Angers, France
| | - Olivier R. Baris
- University Angers, MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers, France
| | - Naïg Gueguen
- University Angers, MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers, France
- Departments of Biochemistry and Molecular Biology, University Hospital Angers, Angers, France
| | - Arnaud Chevrollier
- University Angers, MitoLab Team, MitoVasc Unit, CNRS UMR6015, INSERM U1083, SFR ICAT, Angers, France
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Richard J, Beauvillain C, Benoit M, Barth M, Aubert C, Rolley C, Bellal S, Bourreau J, Ferragu M, Lebdai S, Chevrollier A, Henrion D, Procaccio V, Bigot P. Ketogenic diet enhances the anti-cancer effects of PD-L1 blockade in renal cell carcinoma. Front Endocrinol (Lausanne) 2024; 15:1344891. [PMID: 38846490 PMCID: PMC11154604 DOI: 10.3389/fendo.2024.1344891] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/28/2023] [Accepted: 04/30/2024] [Indexed: 06/09/2024] Open
Abstract
Introduction Clear cell renal cell carcinoma (ccRCC) is characterized by a predominant metabolic reprogramming triggering energy production by anaerobic glycolysis at the expense of oxydative phosphorylation. Ketogenic diet (KD), which consists of high fat and low carbohydrate intake, could bring required energy substrates to healthy cells while depriving tumor cells of glucose. Our objective was to evaluate the effect of KD on renal cancer cell tumor metabolism and growth proliferation. Methods Growth cell proliferation and mitochondrial metabolism of ACHN and Renca renal carcinoma cells were evaluated under ketone bodies (KB) exposure. In vivo studies were performed with mice (nude or Balb/c) receiving a xenograft of ACHN cells or Renca cells, respectively, and were then split into 2 feeding groups, fed either with standard diet or a 2:1 KD ad libitum. To test the effect of KD associated to immunotherapy, Balb/c mice were treated with anti-PDL1 mAb. Tumor growth was monitored. Results In vitro, KB exposure was associated with a significant reduction of ACHN and Renca cell proliferation and viability, while increasing mitochondrial metabolism. In mice, KD was associated with tumor growth reduction and PDL-1 gene expression up-regulation. In Balb/c mice adjuvant KD was associated to a better response to anti-PDL-1 mAb treatment. Conclusion KB reduced the renal tumor cell growth proliferation and improved mitochondrial respiration and biogenesis. KD also slowed down tumor growth of ACHN and Renca in vivo. We observed that PDL-1 was significantly overexpressed in tumor in mice under KD. Response to anti-PDL-1 mAb was improved in mice under KD. Further studies are needed to confirm the therapeutic benefit of adjuvant KD combined with immunotherapy in patients with kidney cancer.
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Affiliation(s)
- Jeremy Richard
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
| | - Céline Beauvillain
- Univ Angers, Nantes Université, CHU Angers, Inserm, CNRS, CRCI2NA, SFR ICAT, Angers, France
| | - Maxime Benoit
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
- Urology Department, Angers University Hospital, Angers, France
| | - Magalie Barth
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
- Departement de Pédiatrie, CHU d’Angers, Angers, France
| | - Cécile Aubert
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
- Urology Department, Angers University Hospital, Angers, France
| | - Cyrielle Rolley
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
- Urology Department, Angers University Hospital, Angers, France
| | - Sarah Bellal
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
- Department of Pathology, Angers University Hospital, Angers, France
| | - Jennifer Bourreau
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
| | | | - Souhil Lebdai
- Urology Department, Angers University Hospital, Angers, France
| | - Arnaud Chevrollier
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
| | - Daniel Henrion
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
| | - Vincent Procaccio
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
| | - Pierre Bigot
- MITOVASC, SFR ICAT, Univ Angers, CHU Angers, Inserm, CNRS, Angers, France
- Urology Department, Angers University Hospital, Angers, France
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Li Y, Zhang Y, Jiang G, Wang Y, He C, Zhao X, Liu L, Li L. Case report: novel mutations of NDUFS6 and NHLRC2 genes potentially cause the quick postnatal death of a Chinese Hani minority neonate with mitochondrial complex I deficiency and FINCA syndrome. Medicine (Baltimore) 2022; 101:e29239. [PMID: 35801790 PMCID: PMC9259100 DOI: 10.1097/md.0000000000029239] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
INTRODUCTION Mitochondrial complex I deficiency (MCID) and abbFINCA syndrome are lethal congenital diseases and cases in the neonatal period are rarely reported. Here, we identified a Chinese Hani minority neonate with rare MCID and FINCA syndrome. This study was to analyze the clinical manifestations and pathogenic gene variations, and to investigate causes of quick postnatal death of patient and possible molecular pathogenic mechanisms. PATIENT CONCERNS A 17-day-old patient had reduced muscle tension, diminished primitive reflexes, significantly abnormal blood gas analysis, and progressively increased blood lactate and blood glucose. Imaging studies revealed pneumonia, pulmonary hypertension, and brain abnormalities. DIAGNOSIS Whole-exome sequencing revealed that the NDUFS6 gene of the patient carried c. 344G > T (p.C115F) novel homozygous variation, and the NHLRC2 gene carried c. 1749C > G (p.F583L) and c. 2129C > T (p.T710M) novel compound heterozygous variation. INTERVENTIONS AND OUTCOMES The patient was given endotracheal intubation, respiratory support, high-frequency ventilation, antishock therapy, as well as iNO and Alprostadil to reduce pulmonary hypertension and maintain homeostatic equilibrium. However, the patient was critically ill and died in 27 days. CONCLUSION The patient has MCID due to a novel mutation in NDUFS6 and FINCA syndrome due to novel mutations in NHLRC2, which is the main reason for the rapid onset and quick death of the patient.
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Affiliation(s)
- Yangfang Li
- Department of Neonatology, Kunming Children’s Hospital, Kunming 650228, Yunnan, China
| | - Yu Zhang
- Kunming Key Laboratory of Children Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics, Kunming Children’s Hospital, Kunming 650228, Yunnan, China
| | - Gengpan Jiang
- Department of Neonatology, Kunming Children’s Hospital, Kunming 650228, Yunnan, China
| | - Yan Wang
- Kunming Key Laboratory of Children Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics, Kunming Children’s Hospital, Kunming 650228, Yunnan, China
| | - Canlin He
- Department of Neonatology, Kunming Children’s Hospital, Kunming 650228, Yunnan, China
| | - Xiaofen Zhao
- Department of Neonatology, Kunming Children’s Hospital, Kunming 650228, Yunnan, China
| | - Ling Liu
- Department of Neonatology, Kunming Children’s Hospital, Kunming 650228, Yunnan, China
| | - Li Li
- Kunming Key Laboratory of Children Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics, Kunming Children’s Hospital, Kunming 650228, Yunnan, China
- *Correspondence: Li Li, Kunming Key Laboratory of Children Infection and Immunity, Yunnan Key Laboratory of Children’s Major Disease Research, Yunnan Institute of Pediatrics, Kunming Children’s Hospital, Kunming 650228, Yunnan, China (e-mail: )
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Kim SH, Ramos SC, Valencia RA, Cho YI, Lee SS. Heat Stress: Effects on Rumen Microbes and Host Physiology, and Strategies to Alleviate the Negative Impacts on Lactating Dairy Cows. Front Microbiol 2022; 13:804562. [PMID: 35295316 PMCID: PMC8919045 DOI: 10.3389/fmicb.2022.804562] [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: 10/29/2021] [Accepted: 01/31/2022] [Indexed: 11/13/2022] Open
Abstract
Heat stress (HS) in dairy cows causes considerable losses in the dairy industry worldwide due to reduced animal performance, increased cases of metabolic disorders, altered rumen microbiome, and other health problems. Cows subjected to HS showed decreased ruminal pH and acetate concentration and an increased concentration of ruminal lactate. Heat-stressed cows have an increased abundance of lactate-producing bacteria such as Streptococcus and unclassified Enterobacteriaceae, and soluble carbohydrate utilizers such as Ruminobacter, Treponema, and unclassified Bacteroidaceae. Cellulolytic bacteria, especially Fibrobacteres, increase during HS due to a high heat resistance. Actinobacteria and Acetobacter, both acetate-producing bacteria, decreased under HS conditions. Rumen fermentation functions, blood parameters, and metabolites are also affected by the physiological responses of the animal during HS. Isoleucine, methionine, myo-inositol, lactate, tryptophan, tyrosine, 1,5-anhydro-D-sorbitol, 3-phenylpropionic acid, urea, and valine decreased under these conditions. These responses affect feed consumption and production efficiency in milk yield, growth rate, and reproduction. At the cellular level, activation of heat shock transcription factor (HSF) (located throughout the nucleus and the cytoplasm) and increased expression of heat shock proteins (HSPs) are the usual responses to cope with homeostasis. HSP70 is the most abundant HSP family responsible for the environmental stress response, while HSF1 is essential for increasing cell temperature. The expression of bovine lymphocyte antigen and histocompatibility complex class II (DRB3) is downregulated during HS, while HSP90 beta I and HSP70 1A are upregulated. HS increases the expression of the cytosolic arginine sensor for mTORC1 subunits 1 and 2, phosphorylation of mammalian target of rapamycin and decreases the phosphorylation of Janus kinase-2 (a signal transducer and activator of transcription factor-5). These changes in physiology, metabolism, and microbiomes in heat-stressed dairy cows require urgent alleviation strategies. Establishing control measures to combat HS can be facilitated by elucidating mechanisms, including proper HS assessment, access to cooling facilities, special feeding and care, efficient water systems, and supplementation with vitamins, minerals, plant extracts, and probiotics. Understanding the relationship between HS and the rumen microbiome could contribute to the development of manipulation strategies to alleviate the influence of HS. This review comprehensively elaborates on the impact of HS in dairy cows and introduces different alleviation strategies to minimize HS.
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Affiliation(s)
- Seon Ho Kim
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon, South Korea
| | - Sonny C. Ramos
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon, South Korea
| | - Raniel A. Valencia
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon, South Korea
- Department of Animal Science, College of Agriculture, Central Luzon State University, Science City of Muñoz, Philippines
| | - Yong Il Cho
- Animal Disease and Diagnostic Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon, South Korea
| | - Sang Suk Lee
- Ruminant Nutrition and Anaerobe Laboratory, Department of Animal Science and Technology, Sunchon National University, Suncheon, South Korea
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Ramasubramanian R, Kalhan R, Jacobs DR, Washko GR, Hou L, Gross MD, Guan W, Thyagarajan B. Gene expression of oxidative stress markers and lung function: A CARDIA lung study. Mol Genet Genomic Med 2021; 9:e1832. [PMID: 34800009 PMCID: PMC8683624 DOI: 10.1002/mgg3.1832] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2021] [Revised: 08/14/2021] [Accepted: 09/14/2021] [Indexed: 11/29/2022] Open
Abstract
BACKGROUND Circulating markers of oxidative stress have been associated with lower lung function. Our objective was to study the association of gene expression levels of oxidative stress pathway genes (ALOX12, ALOX15, ARG2, GSTT1, LPO, MPO, NDUFB3, PLA2G7, and SOD3) and lung function forced expiratory volume in one second (FEV1 ), forced vital capacity (FVC) in Coronary Artery Risk Development in Young Adults study. METHODS Lung function was measured using spirometry and the Nanostring platform was used to estimate gene expression levels. Linear regression models were used to study association of lung function measured at year 30, 10-year decline in lung function and gene expression after adjustment for center, smoking, and BMI, measured at year 25. RESULTS The 10-year decline of FEV1 was faster in highest NDUFB3 quartile compared to the lowest (difference = -2.09%; p = 0.001) after adjustment for multiple comparisons. The 10-year decline in FEV1 and FVC was nominally slower in highest versus lowest quartile of PLA2G7 (difference = 1.14%; p = 0.02, and difference = 1.06%; p = 0.005, respectively). The other genes in the study were not associated with FEV1 or FVC. CONCLUSION Higher gene expression levels in oxidative stress pathway genes are associated with faster 10-year FEV1 decline.
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Affiliation(s)
- Ramya Ramasubramanian
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, Minnesota, USA
| | - Ravi Kalhan
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
- Division of Pulmonary and Critical Care Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - David R Jacobs
- Division of Epidemiology and Community Health, University of Minnesota School of Public Health, Minneapolis, Minnesota, USA
| | - George R Washko
- Division of Pulmonary and Critical Care Medicine, Brigham and Women's Hospital, Boston, Massachusetts, USA
- Applied Chest Imaging Laboratory, Brigham and Women's Hospital, Boston, Massachusetts, USA
| | - Lifang Hou
- Department of Preventive Medicine, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Myron D Gross
- Department of Pathology and Laboratory Medicine, University of Minnesota School of Medicine, Minneapolis, Minnesota, USA
| | - Weihua Guan
- Department of Biostatistics, University of Minnesota School of Public Health, Minneapolis, Minnesota, USA
| | - Bharat Thyagarajan
- Department of Pathology and Laboratory Medicine, University of Minnesota School of Medicine, Minneapolis, Minnesota, USA
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Ahmadpour ST, Desquiret-Dumas V, Yikilmaz U, Dartier J, Domingo I, Wetterwald C, Orre C, Gueguen N, Brisson L, Mahéo K, Dumas JF. Doxorubicin-Induced Autophagolysosome Formation Is Partly Prevented by Mitochondrial ROS Elimination in DOX-Resistant Breast Cancer Cells. Int J Mol Sci 2021; 22:ijms22179283. [PMID: 34502189 PMCID: PMC8431121 DOI: 10.3390/ijms22179283] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Revised: 08/18/2021] [Accepted: 08/24/2021] [Indexed: 01/19/2023] Open
Abstract
Since its discovery, mitophagy has been viewed as a protective mechanism used by cancer cells to prevent the induction of mitochondrial apoptosis. Most cancer treatments directly or indirectly cause mitochondrial dysfunction in order to trigger signals for cell death. Elimination of these dysfunctional mitochondria by mitophagy could thus prevent the initiation of the apoptotic cascade. In breast cancer patients, resistance to doxorubicin (DOX), one of the most widely used cancer drugs, is an important cause of poor clinical outcomes. However, the role played by mitophagy in the context of DOX resistance in breast cancer cells is not well understood. We therefore tried to determine whether an increase in mitophagic flux was associated with the resistance of breast cancer cells to DOX. Our first objective was to explore whether DOX-resistant breast cancer cells were characterized by conditions that favor mitophagy induction. We next tried to determine whether mitophagic flux was increased in DOX-resistant cells in response to DOX treatment. For this purpose, the parental (MCF-7) and DOX-resistant (MCF-7dox) breast cancer cell lines were used. Our results show that mitochondrial reactive oxygen species (ROS) production and hypoxia-inducible factor-1 alpha (HIF-1 alpha) expression are higher in MCF-7dox in a basal condition compared to MCF-7, suggesting DOX-resistant breast cancer cells are prone to stimuli to induce a mitophagy-related event. Our results also showed that, in response to DOX, autophagolysosome formation is induced in DOX-resistant breast cancer cells. This mitophagic step following DOX treatment seems to be partly due to mitochondrial ROS production as autophagolysosome formation is moderately decreased by the mitochondrial antioxidant mitoTEMPO.
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Affiliation(s)
- Seyedeh Tayebeh Ahmadpour
- Inserm UMR1069 Nutrition, Croissance et Cancer, Université de Tours, 37032 Tours, France; (U.Y.); (J.D.); (I.D.); (L.B.); (K.M.)
- Correspondence: (S.T.A.); (J.-F.D.); Tel.: +33-247-366-059 (J.-F.D.); Fax: +33-247-366-226 (J.-F.D.)
| | - Valérie Desquiret-Dumas
- MitoLab Team, Institut MitoVasc, CNRS UMR6015, INSERM U1083, Angers University, 49933 Angers, France; (V.D.-D.); (C.O.); (N.G.)
- Department of Biochemistry and Molecular Biology, University Hospital Angers, 49933 Angers, France;
| | - Ulku Yikilmaz
- Inserm UMR1069 Nutrition, Croissance et Cancer, Université de Tours, 37032 Tours, France; (U.Y.); (J.D.); (I.D.); (L.B.); (K.M.)
| | - Julie Dartier
- Inserm UMR1069 Nutrition, Croissance et Cancer, Université de Tours, 37032 Tours, France; (U.Y.); (J.D.); (I.D.); (L.B.); (K.M.)
| | - Isabelle Domingo
- Inserm UMR1069 Nutrition, Croissance et Cancer, Université de Tours, 37032 Tours, France; (U.Y.); (J.D.); (I.D.); (L.B.); (K.M.)
| | - Celine Wetterwald
- Department of Biochemistry and Molecular Biology, University Hospital Angers, 49933 Angers, France;
| | - Charlotte Orre
- MitoLab Team, Institut MitoVasc, CNRS UMR6015, INSERM U1083, Angers University, 49933 Angers, France; (V.D.-D.); (C.O.); (N.G.)
| | - Naïg Gueguen
- MitoLab Team, Institut MitoVasc, CNRS UMR6015, INSERM U1083, Angers University, 49933 Angers, France; (V.D.-D.); (C.O.); (N.G.)
- Department of Biochemistry and Molecular Biology, University Hospital Angers, 49933 Angers, France;
| | - Lucie Brisson
- Inserm UMR1069 Nutrition, Croissance et Cancer, Université de Tours, 37032 Tours, France; (U.Y.); (J.D.); (I.D.); (L.B.); (K.M.)
| | - Karine Mahéo
- Inserm UMR1069 Nutrition, Croissance et Cancer, Université de Tours, 37032 Tours, France; (U.Y.); (J.D.); (I.D.); (L.B.); (K.M.)
| | - Jean-François Dumas
- Inserm UMR1069 Nutrition, Croissance et Cancer, Université de Tours, 37032 Tours, France; (U.Y.); (J.D.); (I.D.); (L.B.); (K.M.)
- Correspondence: (S.T.A.); (J.-F.D.); Tel.: +33-247-366-059 (J.-F.D.); Fax: +33-247-366-226 (J.-F.D.)
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Adult mesenchymal stem cell ageing interplays with depressed mitochondrial Ndufs6. Cell Death Dis 2020; 11:1075. [PMID: 33323934 PMCID: PMC7738680 DOI: 10.1038/s41419-020-03289-w] [Citation(s) in RCA: 40] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2020] [Accepted: 11/25/2020] [Indexed: 02/07/2023]
Abstract
Mesenchymal stem cell (MSC)-based therapy has emerged as a novel strategy to treat many degenerative diseases. Accumulating evidence shows that the function of MSCs declines with age, thus limiting their regenerative capacity. Nonetheless, the underlying mechanisms that control MSC ageing are not well understood. We show that compared with bone marrow-MSCs (BM-MSCs) isolated from young and aged samples, NADH dehydrogenase (ubiquinone) iron-sulfur protein 6 (Ndufs6) is depressed in aged MSCs. Similar to that of Ndufs6 knockout (Ndufs6−/−) mice, MSCs exhibited a reduced self-renewal and differentiation capacity with a tendency to senescence in the presence of an increased p53/p21 level. Downregulation of Ndufs6 by siRNA also accelerated progression of wild-type BM-MSCs to an aged state. In contrast, replenishment of Ndufs6 in Ndufs6−/−-BM-MSCs significantly rejuvenated senescent cells and restored their proliferative ability. Compared with BM-MSCs, Ndufs6−/−-BM-MSCs displayed increased intracellular and mitochondrial reactive oxygen species (ROS), and decreased mitochondrial membrane potential. Treatment of Ndufs6−/−-BM-MSCs with mitochondrial ROS inhibitor Mito-TEMPO notably reversed the cellular senescence and reduced the increased p53/p21 level. We provide direct evidence that impairment of mitochondrial Ndufs6 is a putative accelerator of adult stem cell ageing that is associated with excessive ROS accumulation and upregulation of p53/p21. It also indicates that manipulation of mitochondrial function is critical and can effectively protect adult stem cells against senescence.
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Cellular mechanisms of complex I-associated pathology. Biochem Soc Trans 2020; 47:1963-1969. [PMID: 31769488 DOI: 10.1042/bst20191042] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 11/08/2019] [Accepted: 11/08/2019] [Indexed: 11/17/2022]
Abstract
Mitochondria control vitally important functions in cells, including energy production, cell signalling and regulation of cell death. Considering this, any alteration in mitochondrial metabolism would lead to cellular dysfunction and the development of a disease. A large proportion of disorders associated with mitochondria are induced by mutations or chemical inhibition of the mitochondrial complex I - the entry point to the electron transport chain. Subunits of the enzyme NADH: ubiquinone oxidoreductase, are encoded by both nuclear and mitochondrial DNA and mutations in these genes lead to cardio and muscular pathologies and diseases of the central nervous system. Despite such a clear involvement of complex I deficiency in numerous disorders, the molecular and cellular mechanisms leading to the development of pathology are not very clear. In this review, we summarise how lack of activity of complex I could differentially change mitochondrial and cellular functions and how these changes could lead to a pathology, following discrete routes.
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Bittle J, Menezes EC, McCormick ML, Spitz DR, Dailey M, Stevens HE. The Role of Redox Dysregulation in the Effects of Prenatal Stress on Embryonic Interneuron Migration. Cereb Cortex 2019; 29:5116-5130. [PMID: 30877797 PMCID: PMC7199998 DOI: 10.1093/cercor/bhz052] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2018] [Revised: 02/18/2019] [Accepted: 02/22/2019] [Indexed: 01/09/2023] Open
Abstract
Maternal stress during pregnancy is associated with increased risk of psychiatric disorders in offspring, but embryonic brain mechanisms disrupted by prenatal stress are not fully understood. Our lab has shown that prenatal stress delays inhibitory neural progenitor migration. Here, we investigated redox dysregulation as a mechanism for embryonic cortical interneuron migration delay, utilizing direct manipulation of pro- and antioxidants and a mouse model of maternal repetitive restraint stress starting on embryonic day 12. Time-lapse, live-imaging of migrating GAD67GFP+ interneurons showed that normal tangential migration of inhibitory progenitor cells was disrupted by the pro-oxidant, hydrogen peroxide. Interneuron migration was also delayed by in utero intracerebroventricular rotenone. Prenatal stress altered glutathione levels and induced changes in activity of antioxidant enzymes and expression of redox-related genes in the embryonic forebrain. Assessment of dihydroethidium (DHE) fluorescence after prenatal stress in ganglionic eminence (GE), the source of migrating interneurons, showed increased levels of DHE oxidation. Maternal antioxidants (N-acetylcysteine and astaxanthin) normalized DHE oxidation levels in GE and ameliorated the migration delay caused by prenatal stress. Through convergent redox manipula-tions, delayed interneuron migration after prenatal stress was found to critically involve redox dysregulation. Redox biology during prenatal periods may be a target for protecting brain development.
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Affiliation(s)
- Jada Bittle
- Department of Psychiatry, University of Iowa Carver College of Medicine, 1310 PBDB, 169 Newton Rd, Iowa City, IA, USA
- Interdisciplinary Graduate Program in Neuroscience, University of Iowa, 356 Medical Research Center, Iowa City, IA, USA
| | - Edenia C Menezes
- Department of Psychiatry, University of Iowa Carver College of Medicine, 1310 PBDB, 169 Newton Rd, Iowa City, IA, USA
| | - Michael L McCormick
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, University of Iowa Carver College of Medicine, B180 Medical Laboratories, Iowa City, IA, USA
| | - Douglas R Spitz
- Free Radical and Radiation Biology Program, Department of Radiation Oncology, University of Iowa Carver College of Medicine, B180 Medical Laboratories, Iowa City, IA, USA
| | - Michael Dailey
- Interdisciplinary Graduate Program in Neuroscience, University of Iowa, 356 Medical Research Center, Iowa City, IA, USA
- Iowa Neuroscience Institute, University of Iowa, 2312 PBDB, 169 Newton Rd, Iowa City, IA, USA
| | - Hanna E Stevens
- Department of Psychiatry, University of Iowa Carver College of Medicine, 1310 PBDB, 169 Newton Rd, Iowa City, IA, USA
- Interdisciplinary Graduate Program in Neuroscience, University of Iowa, 356 Medical Research Center, Iowa City, IA, USA
- Iowa Neuroscience Institute, University of Iowa, 2312 PBDB, 169 Newton Rd, Iowa City, IA, USA
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11
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Cassereau J, Chevrollier A, Codron P, Goizet C, Gueguen N, Verny C, Reynier P, Bonneau D, Lenaers G, Procaccio V. Oxidative stress contributes differentially to the pathophysiology of Charcot-Marie-Tooth disease type 2K. Exp Neurol 2019; 323:113069. [PMID: 31655048 DOI: 10.1016/j.expneurol.2019.113069] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2019] [Revised: 09/12/2019] [Accepted: 09/19/2019] [Indexed: 12/20/2022]
Abstract
Charcot-Marie-Tooth (CMT) disease is a common inherited peripheral neuropathy. The CMT2K axonal form is associated with GDAP1 dominant mutations, which according to the affected domain cause a gradient of severity. Indeed, the p.C240Y mutation, located within GDAP1 glutathione S-transferase (GST) domain and associated to a mitochondrial complex I defect, is related to a faster disease progression, compared to other mutations, such as the p.R120W located outside the GST domain. Here, we analysed the pathophysiology of six CMT2K fibroblast cell lines, carrying either the p.C240Y or p.R120W mutations. We show that complex I deficiency leads to a redox potential alteration and a significant reduction of sirtuin 1 (SIRT1) expression, a major deacetylase sensitive to the cellular redox state, and NRF1 the downstream target of SIRT1. In addition, we disclosed that the p.C240Y mutation is associated with a greater mitochondrial oxidative stress than the p.R120W mutation. Moreover, complex I activity is further restored in CMT2K mutant cell lines exposed to resveratrol. Together, these results suggest that the reduction of oxidative stress may constitute a promising therapeutic strategy for CMT2K.
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Affiliation(s)
- Julien Cassereau
- MitoLab, UMR CNRS 6015-INSERM 1083, MitoVasc Institute, University of Angers, Angers, France; University Hospital of Angers, Department of Neurology, F-49100 Angers, France.
| | - Arnaud Chevrollier
- MitoLab, UMR CNRS 6015-INSERM 1083, MitoVasc Institute, University of Angers, Angers, France
| | - Philippe Codron
- MitoLab, UMR CNRS 6015-INSERM 1083, MitoVasc Institute, University of Angers, Angers, France; University Hospital of Angers, Department of Neurology, F-49100 Angers, France
| | - Cyril Goizet
- Centre de Référence Neurogénétique, Service de Génétique, Hôpital Pellegrin, University Hospital of Bordeaux and Laboratoire, MRGM, INSERM U1211, University of Bordeaux, F-33000 Bordeaux, France
| | - Naïg Gueguen
- MitoLab, UMR CNRS 6015-INSERM 1083, MitoVasc Institute, University of Angers, Angers, France; University Hospital of Angers, Department of Biochemistry and Genetics, F-49100 Angers, France
| | - Christophe Verny
- MitoLab, UMR CNRS 6015-INSERM 1083, MitoVasc Institute, University of Angers, Angers, France; University Hospital of Angers, Department of Neurology, F-49100 Angers, France
| | - Pascal Reynier
- MitoLab, UMR CNRS 6015-INSERM 1083, MitoVasc Institute, University of Angers, Angers, France; University Hospital of Angers, Department of Biochemistry and Genetics, F-49100 Angers, France
| | - Dominique Bonneau
- MitoLab, UMR CNRS 6015-INSERM 1083, MitoVasc Institute, University of Angers, Angers, France; University Hospital of Angers, Department of Biochemistry and Genetics, F-49100 Angers, France
| | - Guy Lenaers
- MitoLab, UMR CNRS 6015-INSERM 1083, MitoVasc Institute, University of Angers, Angers, France
| | - Vincent Procaccio
- MitoLab, UMR CNRS 6015-INSERM 1083, MitoVasc Institute, University of Angers, Angers, France; University Hospital of Angers, Department of Biochemistry and Genetics, F-49100 Angers, France
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12
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Ni Y, Hagras MA, Konstantopoulou V, Mayr JA, Stuchebrukhov AA, Meierhofer D. Mutations in NDUFS1 Cause Metabolic Reprogramming and Disruption of the Electron Transfer. Cells 2019; 8:cells8101149. [PMID: 31557978 PMCID: PMC6829531 DOI: 10.3390/cells8101149] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2019] [Revised: 09/10/2019] [Accepted: 09/20/2019] [Indexed: 01/07/2023] Open
Abstract
Complex I (CI) is the first enzyme of the mitochondrial respiratory chain and couples the electron transfer with proton pumping. Mutations in genes encoding CI subunits can frequently cause inborn metabolic errors. We applied proteome and metabolome profiling of patient-derived cells harboring pathogenic mutations in two distinct CI genes to elucidate underlying pathomechanisms on the molecular level. Our results indicated that the electron transfer within CI was interrupted in both patients by different mechanisms. We showed that the biallelic mutations in NDUFS1 led to a decreased stability of the entire N-module of CI and disrupted the electron transfer between two iron–sulfur clusters. Strikingly interesting and in contrast to the proteome, metabolome profiling illustrated that the pattern of dysregulated metabolites was almost identical in both patients, such as the inhibitory feedback on the TCA cycle and altered glutathione levels, indicative for reactive oxygen species (ROS) stress. Our findings deciphered pathological mechanisms of CI deficiency to better understand inborn metabolic errors.
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Affiliation(s)
- Yang Ni
- Mass Spectrometry Facility, Max Planck Institute for Molecular Genetics, 14195 Berlin, Germany;
- Department of Biology, Chemistry and Pharmacy, Freie Universität Berlin, 14195 Berlin, Germany
- Present address: Laboratory of Angiogenesis and Vascular Metabolism, VIB-KU Leuven Center for Cancer Biology, 3000 Leuven, Belgium
| | - Muhammad A. Hagras
- Department of Chemistry, University of California Davis, Davis, CA 95616, USA; (M.A.H.); (A.A.S.)
- Present address: Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Vassiliki Konstantopoulou
- Department of Pediatrics and Adolescent Medicine, Medical University of Vienna, 1090 Vienna, Austria;
| | - Johannes A. Mayr
- Department of Pediatrics, Paracelsus Medical University Salzburg, 5020 Salzburg, Austria;
| | - Alexei A. Stuchebrukhov
- Department of Chemistry, University of California Davis, Davis, CA 95616, USA; (M.A.H.); (A.A.S.)
| | - David Meierhofer
- Mass Spectrometry Facility, Max Planck Institute for Molecular Genetics, 14195 Berlin, Germany;
- Correspondence: ; Tel.: +49-30-8413-1567
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13
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Branco CS, Duong A, Machado AK, Wu A, Scola G, Andreazza AC, Salvador M. Araucaria angustifolia (Bertol.) Kuntze has neuroprotective action through mitochondrial modulation in dopaminergic SH-SY5Y cells. Mol Biol Rep 2019; 46:6013-6025. [PMID: 31452047 DOI: 10.1007/s11033-019-05037-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2019] [Accepted: 08/20/2019] [Indexed: 12/22/2022]
Abstract
Brain disorders (BD) including neuropsychiatric and neurodegenerative diseases, are often associated with impairments in mitochondrial function and oxidative damage that can lead to neuronal injury. The mitochondrial complex I enzyme is one of the main sites of ROS generation and is implicated in many BD pathophysiologies. Despite advances in therapeutics for BD management, conventional pharmacotherapy still cannot efficiently control neuronal redox imbalance and mitochondrial dysfunction. Araucaria angustifolia is one of the main pine species in South America and presents a notable therapeutic history in folk medicine. A. angustifolia extract (AAE), obtained from the natural waste named bracts, is rich in flavonoids; molecules able to regulate cell redox metabolism. We examined the effects of AAE on rotenone-induced mitochondrial complex I dysfunction in human dopaminergic SH-SY5Y cells. AAE restored complex I assembly and activity mainly through overexpression of NDUFS7 protein and NDUFV2 gene levels. These findings were accompanied by a reduction in the generation of neuronal reactive oxygen species and lipid peroxidation. Our data demonstrates, for the first time, that AAE exerts in vitro neuroprotective effects, thus making it an interesting source for future drug development in BD-associated mitochondrial dysfunctions.
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Affiliation(s)
- Catia Santos Branco
- Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, RS, 95070 560, Brazil.
| | - Angela Duong
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | | | - Abbie Wu
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada
| | - Gustavo Scola
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Centre for Addiction and Mental Health - CAMH, Toronto, ON, Canada
| | - Ana Cristina Andreazza
- Department of Pharmacology and Toxicology, University of Toronto, Toronto, ON, Canada.,Department of Psychiatry, University of Toronto, Toronto, ON, Canada.,Centre for Addiction and Mental Health - CAMH, Toronto, ON, Canada
| | - Mirian Salvador
- Institute of Biotechnology, University of Caxias do Sul, Caxias do Sul, RS, 95070 560, Brazil
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14
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Warburg-like effect is a hallmark of complex I assembly defects. Biochim Biophys Acta Mol Basis Dis 2019; 1865:2475-2489. [PMID: 31121247 DOI: 10.1016/j.bbadis.2019.05.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2018] [Revised: 05/13/2019] [Accepted: 05/15/2019] [Indexed: 01/17/2023]
Abstract
Due to its pivotal role in NADH oxidation and ATP synthesis, mitochondrial complex I (CI) emerged as a crucial regulator of cellular metabolism. A functional CI relies on the sequential assembly of nuclear- and mtDNA-encoded subunits; however, whether CI assembly status is involved in the metabolic adaptations in CI deficiency still remains largely unknown. Here, we investigated the relationship between CI functions, its structure and the cellular metabolism in 29 patient fibroblasts representative of most CI mitochondrial diseases. Our results show that, contrary to the generally accepted view, a complex I deficiency does not necessarily lead to a glycolytic switch, i.e. the so-called Warburg effect, but that this particular metabolic adaptation is a feature of CI assembly defect. By contrast, a CI functional defect without disassembly induces a higher catabolism to sustain the oxidative metabolism. Mechanistically, we demonstrate that reactive oxygen species overproduction by CI assembly intermediates and subsequent AMPK-dependent Pyruvate Dehydrogenase inactivation are key players of this metabolic reprogramming. Thus, this study provides a two-way-model of metabolic responses to CI deficiencies that are central not only in defining therapeutic strategies for mitochondrial diseases, but also in all pathophysiological conditions involving a CI deficiency.
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15
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Ma L, Yang Y, Zhao X, Wang F, Gao S, Bu D. Heat stress induces proteomic changes in the liver and mammary tissue of dairy cows independent of feed intake: An iTRAQ study. PLoS One 2019; 14:e0209182. [PMID: 30625175 PMCID: PMC6326702 DOI: 10.1371/journal.pone.0209182] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2018] [Accepted: 11/30/2018] [Indexed: 01/17/2023] Open
Abstract
Heat stress decreases milk yield and deleteriously alters milk composition. Reduced feed intake partially explains some of the consequences of heat stress, but metabolic changes in the mammary tissue and liver associated with milk synthesis have not been thoroughly evaluated. In the current study, changes of protein abundance in the mammary tissue and liver between heat-stressed cows with ad libitum intake and pair-fed thermal neutral cows were investigated using the iTRAQ proteomic approach. Most of the differentially expressed proteins from mammary tissue and liver between heat-stressed and pair-fed cows were involved in Gene Ontology category of protein metabolic process. Pathway analysis indicated that differentially expressed proteins in the mammary tissue were related to pyruvate, glyoxylate and dicarboxylate metabolism pathways, while those in the liver participated in oxidative phosphorylation and antigen processing and presentation pathways. Several heat shock proteins directly interact with each other and were considered as central “hubs” in the protein interaction network. These findings provide new insights to understand the turnover of protein biosynthesis pathways within hepatic and mammary tissue that likely contribute to changes in milk composition from heat-stressed cows.
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Affiliation(s)
- Lu Ma
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Yongxin Yang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
- Institute of Animal Science and Veterinary Medicine, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Xiaowei Zhao
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
- Institute of Animal Science and Veterinary Medicine, Anhui Academy of Agricultural Sciences, Hefei, China
| | - Fang Wang
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Shengtao Gao
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
| | - Dengpan Bu
- State Key Laboratory of Animal Nutrition, Institute of Animal Science, Chinese Academy of Agricultural Sciences, Beijing, China
- CAAS-ICRAF Joint Lab on Agroforestry and Sustainable Animal Husbandry, World Agroforestry Centre, East and Central Asia, Beijing, China
- Hunan Co-Innovation Center of Animal Production Safety, CICAPS, Changsha, Hunan, China
- * E-mail:
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16
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Limphaibool N, Iwanowski P, Holstad MJV, Perkowska K. Parkinsonism in Inherited Metabolic Disorders: Key Considerations and Major Features. Front Neurol 2018; 9:857. [PMID: 30369906 PMCID: PMC6194353 DOI: 10.3389/fneur.2018.00857] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2018] [Accepted: 09/24/2018] [Indexed: 12/18/2022] Open
Abstract
Parkinson's Disease (PD) is a common neurodegenerative disorder manifesting as reduced facilitation of voluntary movements. Extensive research over recent decades has expanded our insights into the pathogenesis of the disease, where PD is indicated to result from multifactorial etiological factors involving environmental contributions in genetically predisposed individuals. There has been considerable interest in the association between neurological manifestations in PD and in inherited metabolic disorders (IMDs), which are genetic disorders characterized by a deficient activity in the pathways of intermediary metabolism leading to multiple-system manifestations. In addition to the parallel in various clinical features, there is increasing evidence for the notion that genetic mutations underlying IMDs may increase the risk of PD development. This review highlights the recent advances in parkinsonism in patients with IMDs, with the primary objective to improve the understanding of the overlapping pathogenic pathways and clinical presentations in both disorders. We discuss the genetic convergence and disruptions in biochemical mechanisms which may point to clues surrounding pathogenesis-targeted treatment and other promising therapeutic strategies in the future.
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Affiliation(s)
| | - Piotr Iwanowski
- Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
| | | | - Katarzyna Perkowska
- Department of Neurology, Poznan University of Medical Sciences, Poznan, Poland
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17
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Cueto R, Zhang L, Shan HM, Huang X, Li X, Li YF, Lopez J, Yang WY, Lavallee M, Yu C, Ji Y, Yang X, Wang H. Identification of homocysteine-suppressive mitochondrial ETC complex genes and tissue expression profile - Novel hypothesis establishment. Redox Biol 2018; 17:70-88. [PMID: 29679893 PMCID: PMC6006524 DOI: 10.1016/j.redox.2018.03.015] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Accepted: 03/22/2018] [Indexed: 12/13/2022] Open
Abstract
Hyperhomocysteinemia (HHcy) is an independent risk factor for cardiovascular disease (CVD) which has been implicated in matochondrial (Mt) function impairment. In this study, we characterized Hcy metabolism in mouse tissues by using LC-ESI-MS/MS analysis, established tissue expression profiles for 84 nuclear-encoded Mt electron transport chain complex (nMt-ETC-Com) genes in 20 human and 19 mouse tissues by database mining, and modeled the effect of HHcy on Mt-ETC function. Hcy levels were high in mouse kidney/lung/spleen/liver (24-14 nmol/g tissue) but low in brain/heart (~5 nmol/g). S-adenosylhomocysteine (SAH) levels were high in the liver/kidney (59-33 nmol/g), moderate in lung/heart/brain (7-4 nmol/g) and low in spleen (1 nmol/g). S-adenosylmethionine (SAM) was comparable in all tissues (42-18 nmol/g). SAM/SAH ratio was as high as 25.6 in the spleen but much lower in the heart/lung/brain/kidney/liver (7-0.6). The nMt-ETC-Com genes were highly expressed in muscle/pituitary gland/heart/BM in humans and in lymph node/heart/pancreas/brain in mice. We identified 15 Hcy-suppressive nMt-ETC-Com genes whose mRNA levels were negatively correlated with tissue Hcy levels, including 11 complex-I, one complex-IV and two complex-V genes. Among the 11 Hcy-suppressive complex-I genes, 4 are complex-I core subunits. Based on the pattern of tissue expression of these genes, we classified tissues into three tiers (high/mid/low-Hcy responsive), and defined heart/eye/pancreas/brain/kidney/liver/testis/embryonic tissues as tier 1 (high-Hcy responsive) tissues in both human and mice. Furthermore, through extensive literature mining, we found that most of the Hcy-suppressive nMt-ETC-Com genes were suppressed in HHcy conditions and related with Mt complex assembly/activity impairment in human disease and experimental models. We hypothesize that HHcy inhibits Mt complex I gene expression leading to Mt dysfunction.
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Affiliation(s)
- Ramon Cueto
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA
| | - Lixiao Zhang
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA
| | - Hui Min Shan
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA
| | - Xiao Huang
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA
| | - Xinyuan Li
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA
| | - Ya-Feng Li
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA
| | - Jahaira Lopez
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA
| | - William Y Yang
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA
| | - Muriel Lavallee
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA
| | - Catherine Yu
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA; The Geisinger Commonwealth School of Medicine, Scranton, PA, USA
| | - Yong Ji
- Key Laboratory of Cardiovascular Disease and Molecular Intervention, Nanjing Medical University, Nanjing 210029, China.
| | - Xiaofeng Yang
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA; Department of Pharmacology, Temple University - Lewis Katz School of Medicine, Philadelphia, PA, USA; Thrombosis Research Center, Temple University - Lewis Katz School of Medicine, Philadelphia, PA, USA; Cardiovascular Research Center, Temple University - Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Hong Wang
- Center for Metabolic Disease Research, Temple University - Lewis Katz School of Medicine, 3500 North Broad Street, Philadelphia, PA 19140, USA; Department of Pharmacology, Temple University - Lewis Katz School of Medicine, Philadelphia, PA, USA; Thrombosis Research Center, Temple University - Lewis Katz School of Medicine, Philadelphia, PA, USA; Cardiovascular Research Center, Temple University - Lewis Katz School of Medicine, Philadelphia, PA, USA.
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18
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Krylova TD, Tsygankova PG, Itkis YS, Sheremet NL, Nevinitsyna TA, Mikhaylova SV, Zakharova EY. High-Resolution Respirometry in Diagnostics of Mitochondrial Diseases Caused by Mitochondrial Complex I Deficiency. BIOCHEMISTRY (MOSCOW), SUPPLEMENT SERIES B: BIOMEDICAL CHEMISTRY 2018. [DOI: 10.1134/s1990750818010080] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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19
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The accumulation of assembly intermediates of the mitochondrial complex I matrix arm is reduced by limiting glucose uptake in a neuronal-like model of MELAS syndrome. Biochim Biophys Acta Mol Basis Dis 2018; 1864:1596-1608. [PMID: 29454073 DOI: 10.1016/j.bbadis.2018.02.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Revised: 02/07/2018] [Accepted: 02/08/2018] [Indexed: 02/06/2023]
Abstract
Ketogenic diet (KD) which combined carbohydrate restriction and the addition of ketone bodies has emerged as an alternative metabolic intervention used as an anticonvulsant therapy or to treat different types of neurological or mitochondrial disorders including MELAS syndrome. MELAS syndrome is a severe mitochondrial disease mainly due to the m.3243A > G mitochondrial DNA mutation. The broad success of KD is due to multiple beneficial mechanisms with distinct effects of very low carbohydrates and ketones. To evaluate the metabolic part of carbohydrate restriction, transmitochondrial neuronal-like cybrid cells carrying the m.3243A > G mutation, shown to be associated with a severe complex I deficiency was exposed during 3 weeks to glucose restriction. Mitochondrial enzyme defects were combined with an accumulation of complex I (CI) matrix intermediates in the untreated mutant cells, leading to a drastic reduction in CI driven respiration. The severe reduction of CI was also paralleled in post-mortem brain tissue of a MELAS patient carrying high mutant load. Importantly, lowering significantly glucose concentration in cell culture improved CI assembly with a significant reduction of matrix assembly intermediates and respiration capacities were restored in a sequential manner. In addition, OXPHOS protein expression and mitochondrial DNA copy number were significantly increased in mutant cells exposed to glucose restriction. The accumulation of CI matrix intermediates appeared as a hallmark of MELAS pathophysiology highlighting a critical pathophysiological mechanism involving CI disassembly, which can be alleviated by lowering glucose fuelling and the induction of mitochondrial biogenesis, emphasizing the usefulness of metabolic interventions in MELAS syndrome.
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20
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Skibiel AL, Zachut M, do Amaral BC, Levin Y, Dahl GE. Liver proteomic analysis of postpartum Holstein cows exposed to heat stress or cooling conditions during the dry period. J Dairy Sci 2018; 101:705-716. [DOI: 10.3168/jds.2017-13258] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 09/19/2017] [Indexed: 12/25/2022]
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21
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Bris C, Rouaud T, Desquiret-Dumas V, Gueguen N, Goudenege D, Barth M, Bonneau D, Amati-Bonneau P, Lenaers G, Reynier P, Lebre AS, Procaccio V. Novel NDUFS4 gene mutation in an atypical late-onset mitochondrial form of multifocal dystonia. NEUROLOGY-GENETICS 2017; 3:e205. [PMID: 29264396 PMCID: PMC5733248 DOI: 10.1212/nxg.0000000000000205] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Accepted: 09/26/2017] [Indexed: 12/04/2022]
Affiliation(s)
- Celine Bris
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Tiphaine Rouaud
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Valerie Desquiret-Dumas
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Naig Gueguen
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - David Goudenege
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Magalie Barth
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Dominique Bonneau
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Patrizia Amati-Bonneau
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Guy Lenaers
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Pascal Reynier
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Anne-Sophie Lebre
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
| | - Vincent Procaccio
- UMR CNRS 6015-INSERM U1083 (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), Mitovasc Institute, Angers University, France; Department of Biochemistry and Genetics (C.B., V.D.-D., N.G., D.G., M.B., D.B., P.A.-B., G.L., P.R., V.P.), University Hospital of Angers, France; Department of Neurology (T.R.), University Hospital of Nantes, France; and CHU Reims (A.-S.L.), Hôpital Maison Blanche, Pole de biologie, Service de génétique, France
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22
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Ahmed ST, Alston CL, Hopton S, He L, Hargreaves IP, Falkous G, Oláhová M, McFarland R, Turnbull DM, Rocha MC, Taylor RW. Using a quantitative quadruple immunofluorescent assay to diagnose isolated mitochondrial Complex I deficiency. Sci Rep 2017; 7:15676. [PMID: 29142257 PMCID: PMC5688115 DOI: 10.1038/s41598-017-14623-2] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Accepted: 10/12/2017] [Indexed: 11/21/2022] Open
Abstract
Isolated Complex I (CI) deficiency is the most commonly observed mitochondrial respiratory chain biochemical defect, affecting the largest OXPHOS component. CI is genetically heterogeneous; pathogenic variants affect one of 38 nuclear-encoded subunits, 7 mitochondrial DNA (mtDNA)-encoded subunits or 14 known CI assembly factors. The laboratory diagnosis relies on the spectrophotometric assay of enzyme activity in mitochondrially-enriched tissue homogenates, requiring at least 50 mg skeletal muscle, as there is no reliable histochemical method for assessing CI activity directly in tissue cryosections. We have assessed a validated quadruple immunofluorescent OXPHOS (IHC) assay to detect CI deficiency in the diagnostic setting, using 10 µm transverse muscle sections from 25 patients with genetically-proven pathogenic CI variants. We observed loss of NDUFB8 immunoreactivity in all patients with mutations affecting nuclear-encoding structural subunits and assembly factors, whilst only 3 of the 10 patients with mutations affecting mtDNA-encoded structural subunits showed loss of NDUFB8, confirmed by BN-PAGE analysis of CI assembly and IHC using an alternative, commercially-available CI (NDUFS3) antibody. The IHC assay has clear diagnostic potential to identify patients with a CI defect of Mendelian origins, whilst highlighting the necessity of complete mitochondrial genome sequencing in the diagnostic work-up of patients with suspected mitochondrial disease.
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Affiliation(s)
- Syeda T Ahmed
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle Upon Tyne, UK
| | - Charlotte L Alston
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle Upon Tyne, UK.,NHS Highly Specialised Mitochondrial Diagnostic Laboratory, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Sila Hopton
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle Upon Tyne, UK.,NHS Highly Specialised Mitochondrial Diagnostic Laboratory, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Langping He
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle Upon Tyne, UK.,NHS Highly Specialised Mitochondrial Diagnostic Laboratory, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Iain P Hargreaves
- The National Hospital for Neurology and Neurosurgery, University College London Hospitals NHS Foundation Trust, London, UK.,School of Pharmacy and Biomolecular Sciences, Liverpool John Moores University, Byrom Street, Liverpool, L3 3AF, UK
| | - Gavin Falkous
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle Upon Tyne, UK.,NHS Highly Specialised Mitochondrial Diagnostic Laboratory, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Monika Oláhová
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle Upon Tyne, UK
| | - Robert McFarland
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle Upon Tyne, UK
| | - Doug M Turnbull
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle Upon Tyne, UK
| | - Mariana C Rocha
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle Upon Tyne, UK.,BHF Centre of Research Excellence, The James Black Centre, King's College London, University of London, 125 Coldharbour Lane, London, SE5 9NU, UK
| | - Robert W Taylor
- Wellcome Centre for Mitochondrial Research, Institute of Neuroscience, Newcastle University, Newcastle Upon Tyne, UK. .,NHS Highly Specialised Mitochondrial Diagnostic Laboratory, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK.
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23
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A Phenotype-Driven Approach to Generate Mouse Models with Pathogenic mtDNA Mutations Causing Mitochondrial Disease. Cell Rep 2017; 16:2980-2990. [PMID: 27626666 PMCID: PMC5039181 DOI: 10.1016/j.celrep.2016.08.037] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2016] [Revised: 07/18/2016] [Accepted: 08/11/2016] [Indexed: 01/30/2023] Open
Abstract
Mutations of mtDNA are an important cause of human disease, but few animal models exist. Because mammalian mitochondria cannot be transfected, the development of mice with pathogenic mtDNA mutations has been challenging, and the main strategy has therefore been to introduce mutations found in cell lines into mouse embryos. Here, we describe a phenotype-driven strategy that is based on detecting clonal expansion of pathogenic mtDNA mutations in colonic crypts of founder mice derived from heterozygous mtDNA mutator mice. As proof of concept, we report the generation of a mouse line transmitting a heteroplasmic pathogenic mutation in the alanine tRNA gene of mtDNA displaying typical characteristics of classic mitochondrial disease. In summary, we describe a straightforward and technically simple strategy based on mouse breeding and histology to generate animal models of mtDNA-mutation disease, which will be of great importance for studies of disease pathophysiology and preclinical treatment trials. We present a method to isolate and identify pathogenic mtDNA mutations in mice We describe a mouse with a pathogenic mutation in the mitochondrial tRNAALA gene The mice display disrupted mitochondrial translation as a result of the mutation The mice display molecular and histochemical symptoms of human mitochondrial disease
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24
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Koopman WJ, Beyrath J, Fung CW, Koene S, Rodenburg RJ, Willems PH, Smeitink JA. Mitochondrial disorders in children: toward development of small-molecule treatment strategies. EMBO Mol Med 2017; 8:311-27. [PMID: 26951622 PMCID: PMC4818752 DOI: 10.15252/emmm.201506131] [Citation(s) in RCA: 70] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
This review presents our current understanding of the pathophysiology and potential treatment strategies with respect to mitochondrial disease in children. We focus on pathologies due to mutations in nuclear DNA‐encoded structural and assembly factors of the mitochondrial oxidative phosphorylation (OXPHOS) system, with a particular emphasis on isolated mitochondrial complex I deficiency. Following a brief introduction into mitochondrial disease and OXPHOS function, an overview is provided of the diagnostic process in children with mitochondrial disorders. This includes the impact of whole‐exome sequencing and relevance of cellular complementation studies. Next, we briefly present how OXPHOS mutations can affect cellular parameters, primarily based on studies in patient‐derived fibroblasts, and how this information can be used for the rational design of small‐molecule treatment strategies. Finally, we discuss clinical trial design and provide an overview of small molecules that are currently being developed for treatment of mitochondrial disease.
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Affiliation(s)
- Werner Jh Koopman
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands Centre for Systems Biology and Bioenergetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | | | - Cheuk-Wing Fung
- Department of Pediatrics, Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, Nijmegen, The Netherlands Department of Paediatrics and Adolescent Medicine, Li Ka Shing Faculty of Medicine, Queen Mary Hospital, University of Hong Kong, Hong Kong
| | - Saskia Koene
- Department of Pediatrics, Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Richard J Rodenburg
- Department of Pediatrics, Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Peter Hgm Willems
- Department of Biochemistry, Radboud Institute for Molecular Life Sciences, Radboud University Medical Center, Nijmegen, The Netherlands Centre for Systems Biology and Bioenergetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Jan Am Smeitink
- Centre for Systems Biology and Bioenergetics, Radboud University Medical Center, Nijmegen, The Netherlands Khondrion BV, Nijmegen, The Netherlands Department of Pediatrics, Radboud Center for Mitochondrial Medicine, Radboud University Medical Center, Nijmegen, The Netherlands
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25
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Krylova TD, Tsygankova PG, Itkis YS, Sheremet NL, Nevinitsyna TA, Mikhaylova SV, Zakharova EY. [High resolution respirometry in diagnostic of mitochondrial disorders caused by mitochondrial complex I deficiency]. BIOMEDIT︠S︡INSKAI︠A︡ KHIMII︠A︡ 2017; 63:327-333. [PMID: 28862604 DOI: 10.18097/pbmc20176304327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Complex I (CI) deficiency is one of the most common defects in the OXPHOS system; it represents more than 30% cases of mitochondrial diseases. The group is characterized by clinical and genetic heterogeneity and comprise several nosological forms. The most prevalent phenotypes for CI are LHON and Leigh syndrome. In this study we have analyzed skin fibroblasts from 11 patients with mutations in mtDNA, which cause LHON or Leigh-like phenotypes: m.11778 G>A (n=3), m.3460 A>G (n=2), m.3635 G>A (n=1), m.3308 T>G (n=2), m.3472 T>C (n=1) and 2 patients with earlier unknown substitutions m.3945 C>A and m.14441T>C. High-resolution respirometry (HRR) on the Oxygraph-2k instrument ("Oroboros corp.", Austria) was performed for complex analysis of the mitochondrial respiratory function in intact and permeabilized fibroblasts of patients and healthy controls. Flux control rations in intact cells R/E, (R-L)/E (p<0.05) were raised compared to the control. Rates of R, E, L normalized on the CS were statistically varied between patients and controls. In permeabilized fibroblasts we observed differences in CII/E, Rot/E, R/CII, CI/CII (p<0.05) between groups. These data highlight the dysfunction of the OXPHOS system and particularly CI. Increased citrate synthase level and decreased CI/CII ratio indicate compensatory metabolic response to respiratory chain dysfunction. Our results show applicability of HRR in revealing the biochemical abnormalities of complex I in fibroblasts of patients with LHON and Leigh-like syndrome. We also suggest HRR to be a useful method for inspection of other mutations causing complex I deficiency.
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Affiliation(s)
- T D Krylova
- Research Centre for Medical Genetics, Moscow, Russia
| | | | - Yu S Itkis
- Research Centre for Medical Genetics, Moscow, Russia
| | - N L Sheremet
- Research Institute of Eye Diseases, Moscow, Russia
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26
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Pohjoismäki JL, Goffart S. The role of mitochondria in cardiac development and protection. Free Radic Biol Med 2017; 106:345-354. [PMID: 28216385 DOI: 10.1016/j.freeradbiomed.2017.02.032] [Citation(s) in RCA: 54] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 01/27/2017] [Accepted: 02/14/2017] [Indexed: 12/31/2022]
Abstract
Mitochondria are essential for the development as well as maintenance of the myocardium, the most energy consuming tissue in the human body. Mitochondria are not only a source of ATP energy but also generators of reactive oxygen species (ROS), that cause oxidative damage, but also regulate physiological processes such as the switch from hyperplastic to hypertrophic growth after birth. As excess ROS production and oxidative damage are associated with cardiac pathology, it is not surprising that much of the research focused on the deleterious aspects of free radicals. However, cardiomyocytes are naturally highly adapted against repeating oxidative insults, with evidence suggesting that moderate and acute ROS exposure has beneficial consequences for mitochondrial maintenance and cardiac health. Antioxidant defenses, mitochondrial quality control, mtDNA maintenance mechanisms as well as mitochondrial fusion and fission improve mitochondrial function and cardiomyocyte survival under stress conditions. As these adaptive processes can be induced, promoting mitohormesis or mitochondrial biogenesis using controlled ROS exposure could provide a promising strategy to increase cardiomyocyte survival and prevent pathological remodeling of the myocardium.
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Affiliation(s)
- Jaakko L Pohjoismäki
- University of Eastern Finland, Department of Environmental and Biological Sciences, P.O. Box 111, 80101 Joensuu, Finland.
| | - Steffi Goffart
- University of Eastern Finland, Department of Environmental and Biological Sciences, P.O. Box 111, 80101 Joensuu, Finland
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27
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Fedotcheva NI, Litvinova EG, Zakharchenko MV, Khunderyakova NV, Fadeev RS, Teplova VV, Fedotcheva TA, Beloborodova NV, Kondrashova MN. Substrate-Specific Reduction of Tetrazolium Salts by Isolated Mitochondria, Tissues, and Leukocytes. BIOCHEMISTRY (MOSCOW) 2017; 82:192-204. [PMID: 28320303 DOI: 10.1134/s0006297917020110] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Tetrazolium salts are commonly used in cytochemical and biochemical studies as indicators of metabolic activity of cells. Formazans, formed by reduction of tetrazolium salts, behave as pseudo-solutions during initial incubation, which allows monitoring their optical density throughout incubation. The criteria and conditions for measuring oxidative activity of mitochondria and dehydrogenase activity in reduction of nitroblue tetrazolium (NBT) and methyl thiazolyl tetrazolium (MTT) in suspensions of isolated mitochondria, tissue homogenates, and leukocytes were investigated in this work. We found that the reduction of these two acceptors depended on the oxidized substrate - NBT was reduced more readily during succinate oxidation, while MTT - during oxidation of NAD-dependent substrates. Reduction of both acceptors was more sensitive to dehydrogenase inhibitors that to respiratory chain inhibitors. The reduction of NBT in isolated mitochondria, in leukocytes in the presence of digitonin, and in liver and kidney homogenates was completely blocked by succinate dehydrogenase inhibitors - malonate and TTFA. Based on these criteria, activation of succinate oxidation was revealed from the increase in malonate-sensitive fraction of the reduced NBT under physiological stress. The effect of progesterone and its synthetic analogs on oxidation of NAD-dependent substrates by mitochondria was investigated using MTT. Both acceptors are also reduced by superoxide anion; the impact of this reaction is negligible or completely absent under physiological conditions, but can become detectable on generation of superoxide induced by inhibitors of individual enzyme complexes or in the case of mitochondrial dysfunction. The results indicate that the recording of optical density of reduced NBT and MTT is a highly sensitive method for evaluation of metabolic activity of mitochondria applicable for different incubation conditions, it offers certain advantages in comparison with other methods (simultaneous incubation of a large set of probes in spectral cuvettes or plates); moreover, it allows determination of activity of separate redox-dependent enzymes when selective inhibitors are available.
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Affiliation(s)
- N I Fedotcheva
- Institute of Theoretical and Experimental Biophysics, Russian Academy of Sciences, Pushchino, Moscow Region, 142290, Russia.
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28
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Friederich MW, Erdogan AJ, Coughlin CR, Elos MT, Jiang H, O’Rourke CP, Lovell MA, Wartchow E, Gowan K, Chatfield KC, Chick WS, Spector EB, Van Hove JL, Riemer J. Mutations in the accessory subunit NDUFB10 result in isolated complex I deficiency and illustrate the critical role of intermembrane space import for complex I holoenzyme assembly. Hum Mol Genet 2017; 26:702-716. [PMID: 28040730 PMCID: PMC6251674 DOI: 10.1093/hmg/ddw431] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2016] [Revised: 11/27/2016] [Accepted: 12/16/2016] [Indexed: 12/17/2022] Open
Abstract
An infant presented with fatal infantile lactic acidosis and cardiomyopathy, and was found to have profoundly decreased activity of respiratory chain complex I in muscle, heart and liver. Exome sequencing revealed compound heterozygous mutations in NDUFB10, which encodes an accessory subunit located within the PD part of complex I. One mutation resulted in a premature stop codon and absent protein, while the second mutation replaced the highly conserved cysteine 107 with a serine residue. Protein expression of NDUFB10 was decreased in muscle and heart, and less so in the liver and fibroblasts, resulting in the perturbed assembly of the holoenzyme at the 830 kDa stage. NDUFB10 was identified together with three other complex I subunits as a substrate of the intermembrane space oxidoreductase CHCHD4 (also known as Mia40). We found that during its mitochondrial import and maturation NDUFB10 transiently interacts with CHCHD4 and acquires disulfide bonds. The mutation of cysteine residue 107 in NDUFB10 impaired oxidation and efficient mitochondrial accumulation of the protein and resulted in degradation of non-imported precursors. Our findings indicate that mutations in NDUFB10 are a novel cause of complex I deficiency associated with a late stage assembly defect and emphasize the role of intermembrane space proteins for the efficient assembly of complex I.
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Affiliation(s)
- Marisa W. Friederich
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, School of Medicine, Aurora, CO, USA
| | - Alican J. Erdogan
- Department of Chemistry, Institute of Biochemistry, University of Cologne, Cologne, Germany
| | - Curtis R. Coughlin
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, School of Medicine, Aurora, CO, USA
| | - Mihret T. Elos
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, School of Medicine, Aurora, CO, USA
| | - Hua Jiang
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, School of Medicine, Aurora, CO, USA
| | - Courtney P. O’Rourke
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, School of Medicine, Aurora, CO, USA
| | - Mark A. Lovell
- Department of Pathology, University of Colorado, Aurora, CO, USA
- Department of Pathology, Children’s Hospital of Colorado, Aurora, CO, USA
| | - Eric Wartchow
- Department of Pathology, University of Colorado, Aurora, CO, USA
- Department of Pathology, Children’s Hospital of Colorado, Aurora, CO, USA
| | - Katherine Gowan
- Department of Biochemistry and Molecular Genetics, University of Colorado, Aurora, CO, USA
| | - Kathryn C. Chatfield
- Department of Pediatrics, Section of Cardiology, University of Colorado, School of Medicine, Aurora, CO, USA
| | - Wallace S. Chick
- Department of Cell and Developmental Biology, University of Colorado, Aurora, CO, USA
| | - Elaine B. Spector
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, School of Medicine, Aurora, CO, USA
| | - Johan L.K. Van Hove
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, School of Medicine, Aurora, CO, USA
| | - Jan Riemer
- Department of Chemistry, Institute of Biochemistry, University of Cologne, Cologne, Germany
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29
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Kahlhöfer F, Kmita K, Wittig I, Zwicker K, Zickermann V. Accessory subunit NUYM (NDUFS4) is required for stability of the electron input module and activity of mitochondrial complex I. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2016; 1858:175-181. [PMID: 27871794 DOI: 10.1016/j.bbabio.2016.11.010] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/15/2016] [Revised: 11/15/2016] [Accepted: 11/17/2016] [Indexed: 11/18/2022]
Abstract
Mitochondrial complex I is an intricate 1MDa membrane protein complex with a central role in aerobic energy metabolism. The minimal form of complex I consists of fourteen central subunits that are conserved from bacteria to man. In addition, eukaryotic complex I comprises some 30 accessory subunits of largely unknown function. The gene for the accessory NDUFS4 subunit of human complex I is a hot spot for fatal pathogenic mutations in humans. We have deleted the gene for the orthologous NUYM subunit in the aerobic yeast Yarrowia lipolytica, an established model system to study eukaryotic complex I and complex I linked diseases. We observed assembly of complex I which lacked only subunit NUYM and retained weak interaction with assembly factor N7BML (human NDUFAF2). Absence of NUYM caused distortion of iron sulfur clusters of the electron input domain leading to decreased complex I activity and increased release of reactive oxygen species. We conclude that NUYM has an important stabilizing function for the electron input module of complex I and is essential for proper complex I function.
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Affiliation(s)
- Flora Kahlhöfer
- Structural Bioenergetics Group, Institute of Biochemistry II, Medical School, Goethe-University Frankfurt am Main, Germany
| | - Katarzyna Kmita
- Structural Bioenergetics Group, Institute of Biochemistry II, Medical School, Goethe-University Frankfurt am Main, Germany
| | - Ilka Wittig
- Functional Proteomics, Institute of Biochemistry I, Medical School, Goethe-University Frankfurt am Main, Germany; Cluster of Excellence Frankfurt "Macromolecular Complexes", Goethe-University Frankfurt am Main, Germany
| | - Klaus Zwicker
- Institute of Biochemistry I, Medical School, Goethe University Frankfurt am Main, Germany
| | - Volker Zickermann
- Structural Bioenergetics Group, Institute of Biochemistry II, Medical School, Goethe-University Frankfurt am Main, Germany; Cluster of Excellence Frankfurt "Macromolecular Complexes", Goethe-University Frankfurt am Main, Germany.
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Frey S, Geffroy G, Desquiret-Dumas V, Gueguen N, Bris C, Belal S, Amati-Bonneau P, Chevrollier A, Barth M, Henrion D, Lenaers G, Bonneau D, Reynier P, Procaccio V. The addition of ketone bodies alleviates mitochondrial dysfunction by restoring complex I assembly in a MELAS cellular model. Biochim Biophys Acta Mol Basis Dis 2016; 1863:284-291. [PMID: 27815040 DOI: 10.1016/j.bbadis.2016.10.028] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/30/2016] [Revised: 10/24/2016] [Accepted: 10/29/2016] [Indexed: 02/07/2023]
Abstract
Ketogenic Diet used to treat refractory epilepsy for almost a century may represent a treatment option for mitochondrial disorders for which effective treatments are still lacking. Mitochondrial complex I deficiencies are involved in a broad spectrum of inherited diseases including Mitochondrial Encephalomyopathy, Lactic Acidosis and Stroke-like episodes syndrome leading to recurrent cerebral insults resembling strokes and associated with a severe complex I deficiency caused by mitochondrial DNA (mtDNA) mutations. The analysis of MELAS neuronal cybrid cells carrying the almost homoplasmic m.3243A>G mutation revealed a metabolic switch towards glycolysis with the production of lactic acid, severe defects in respiratory chain activity and complex I disassembly with an accumulation of assembly intermediates. Metabolites, NADH/NAD+ ratio, mitochondrial enzyme activities, oxygen consumption and BN-PAGE analysis were evaluated in mutant compared to control cells. A severe complex I enzymatic deficiency was identified associated with a major complex I disassembly with an accumulation of assembly intermediates of 400kDa. We showed that Ketone Bodies (KB) exposure for 4weeks associated with glucose deprivation significantly restored complex I stability and activity, increased ATP synthesis and reduced the NADH/NAD+ ratio, a key component of mitochondrial metabolism. In addition, without changing the mutant load, mtDNA copy number was significantly increased with KB, indicating that the absolute amount of wild type mtDNA copy number was higher in treated mutant cells. Therefore KB may constitute an alternative and promising therapy for MELAS syndrome, and could be beneficial for other mitochondrial diseases caused by complex I deficiency.
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Affiliation(s)
- Samuel Frey
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Guillaume Geffroy
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Valerie Desquiret-Dumas
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Naig Gueguen
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Celine Bris
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Sophie Belal
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Patrizia Amati-Bonneau
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Arnaud Chevrollier
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Magalie Barth
- Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Daniel Henrion
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Guy Lenaers
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France
| | - Dominique Bonneau
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Pascal Reynier
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France
| | - Vincent Procaccio
- UMR CNRS 6214-INSERM U1083, Mitovasc Institute, Angers University, Angers, France; Biochemistry and Genetics Department, Angers Hospital, F-49000, France.
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Giachin G, Bouverot R, Acajjaoui S, Pantalone S, Soler-López M. Dynamics of Human Mitochondrial Complex I Assembly: Implications for Neurodegenerative Diseases. Front Mol Biosci 2016; 3:43. [PMID: 27597947 PMCID: PMC4992684 DOI: 10.3389/fmolb.2016.00043] [Citation(s) in RCA: 72] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2016] [Accepted: 08/02/2016] [Indexed: 12/14/2022] Open
Abstract
Neurons are extremely energy demanding cells and highly dependent on the mitochondrial oxidative phosphorylation (OXPHOS) system. Mitochondria generate the energetic potential via the respiratory complexes I to IV, which constitute the electron transport chain (ETC), together with complex V. These redox reactions release energy in the form of ATP and also generate reactive oxygen species (ROS) that are involved in cell signaling but can eventually lead to oxidative stress. Complex I (CI or NADH:ubiquinone oxidoreductase) is the largest ETC enzyme, containing 44 subunits and the main contributor to ROS production. In recent years, the structure of the CI has become available and has provided new insights into CI assembly. A number of chaperones have been identified in the assembly and stability of the mature holo-CI, although they are not part of its final structure. Interestingly, CI dysfunction is the most common OXPHOS disorder in humans and defects in the CI assembly process are often observed. However, the dynamics of the events leading to CI biogenesis remain elusive, which precludes our understanding of how ETC malfunctioning affects neuronal integrity. Here, we review the current knowledge of the structural features of CI and its assembly factors and the potential role of CI misassembly in human disorders such as Complex I Deficiencies or Alzheimer's and Parkinson's diseases.
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Affiliation(s)
- Gabriele Giachin
- Structural Biology Group, European Synchrotron Radiation Facility Grenoble, France
| | - Romain Bouverot
- Structural Biology Group, European Synchrotron Radiation Facility Grenoble, France
| | - Samira Acajjaoui
- Structural Biology Group, European Synchrotron Radiation Facility Grenoble, France
| | - Serena Pantalone
- Structural Biology Group, European Synchrotron Radiation Facility Grenoble, France
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