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Gaudó P, de Tomás-Mateo E, Garrido-Pérez N, Santana A, Ruiz-Pesini E, Montoya J, Bayona-Bafaluy P. "ATAD3C regulates ATAD3A assembly and function in the mitochondrial membrane". Free Radic Biol Med 2024; 211:114-126. [PMID: 38092275 DOI: 10.1016/j.freeradbiomed.2023.12.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2023] [Revised: 11/28/2023] [Accepted: 12/07/2023] [Indexed: 12/21/2023]
Abstract
Mitochondrial ATAD3A is an ATPase Associated with diverse cellular Activities (AAA) domain containing enzyme, involved in the structural organization of the inner mitochondrial membrane and of increasing importance in childhood disease. In humans, two ATAD3A paralogs arose by gene duplication during evolution: ATAD3B and ATAD3C. Here we investigate the cellular activities of the ATAD3C paralog that has been considered a pseudogene. We detected unique ATAD3C peptides in HEK 293T cells, with expression similar to that in human tissues, and showed that it is an integral membrane protein that exposes its carboxy-terminus to the intermembrane space. Overexpression of ATAD3C, but not of ATAD3A, in fibroblasts caused a decrease in cell proliferation and oxygen consumption rate, and an increase of cellular ROS. This was due to the incorporation of ATAD3C monomers in ATAD3A complex in the mitochondrial membrane reducing its size. Consistent with a negative regulation of ATAD3A function in mitochondrial membrane organization, ATAD3C expression led to increased accumulation of respiratory chain dimeric CIII in the inner membrane, to the detriment to that assembled in respiratory supercomplexes. Our results demonstrate a negative dominant role of the ATAD3C paralog with implications for mitochondrial OXPHOS function and suggest that its expression regulates ATAD3A in the cell.
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Affiliation(s)
- Paula Gaudó
- Biochemistry and Molecular Biology Department. Universidad de Zaragoza, 50009- and 50013, Zaragoza, Spain
| | - Elena de Tomás-Mateo
- Biochemistry and Molecular Biology Department. Universidad de Zaragoza, 50009- and 50013, Zaragoza, Spain
| | - Nuria Garrido-Pérez
- Biochemistry and Molecular Biology Department. Universidad de Zaragoza, 50009- and 50013, Zaragoza, Spain; Institute for Health Research (IIS) de Aragón, 50009, Zaragoza, Spain; Rare Diseases Networking Biomedical Research Centre (CIBERER), 28029, Madrid, Spain; Institute for Biocomputation and Physics of Complex Systems, University of Zaragoza, 50018, Zaragoza, Spain
| | - Alfredo Santana
- Research Institute of Biomedical and Health Sciences (IUIBS), University of Las Palmas de Gran Canaria, 35001, Las Palmas de Gran Canaria, Spain; Clinical Genetics Unit, Complejo Hospitarlario Universitario Insular-Materno Infantil de Las Palamas de Gran Canaria, 35016, Las Palmas de Gran Canaria, Spain
| | - Eduardo Ruiz-Pesini
- Institute for Health Research (IIS) de Aragón, 50009, Zaragoza, Spain; Rare Diseases Networking Biomedical Research Centre (CIBERER), 28029, Madrid, Spain.
| | - Julio Montoya
- Biochemistry and Molecular Biology Department. Universidad de Zaragoza, 50009- and 50013, Zaragoza, Spain; Institute for Health Research (IIS) de Aragón, 50009, Zaragoza, Spain; Rare Diseases Networking Biomedical Research Centre (CIBERER), 28029, Madrid, Spain
| | - Pilar Bayona-Bafaluy
- Biochemistry and Molecular Biology Department. Universidad de Zaragoza, 50009- and 50013, Zaragoza, Spain; Institute for Health Research (IIS) de Aragón, 50009, Zaragoza, Spain; Rare Diseases Networking Biomedical Research Centre (CIBERER), 28029, Madrid, Spain; Institute for Biocomputation and Physics of Complex Systems, University of Zaragoza, 50018, Zaragoza, Spain.
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2
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Xenotopic expression of alternative oxidase (AOX) to study mechanisms of mitochondrial disease. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2023; 1864:148947. [PMID: 36481273 DOI: 10.1016/j.bbabio.2022.148947] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 11/17/2022] [Accepted: 11/28/2022] [Indexed: 12/12/2022]
Abstract
The mitochondrial respiratory chain or electron transport chain (ETC) facilitates redox reactions which ultimately lead to the reduction of oxygen to water (respiration). Energy released by this process is used to establish a proton electrochemical gradient which drives ATP formation (oxidative phosphorylation, OXPHOS). It also plays an important role in vital processes beyond ATP formation and cellular metabolism, such as heat production, redox and ion homeostasis. Dysfunction of the ETC can thus impair cellular and organismal viability and is thought to be the underlying cause of a heterogeneous group of so-called mitochondrial diseases. Plants, yeasts, and many lower organisms, but not insects and vertebrates, possess an enzymatic mechanism that confers resistance to respiratory stress conditions, i.e., the alternative oxidase (AOX). Even in cells that naturally lack AOX, it is autonomously imported into the mitochondrial compartment upon xenotopic expression, where it refolds and becomes catalytically engaged when the cytochrome segment of the ETC is blocked. AOX was therefore proposed as a tool to study disease etiologies. To this end, AOX has been xenotopically expressed in mammalian cells and disease models of the fruit fly and mouse. Surprisingly, AOX showed remarkable rescue effects in some cases, whilst in others it had no effect or even exacerbated a condition. Here we summarize what has been learnt from the use of AOX in various disease models and discuss issues which still need to be addressed in order to understand the role of the ETC in health and disease.
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3
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Transgenic NADH dehydrogenase restores oxygen regulation of breathing in mitochondrial complex I-deficient mice. Nat Commun 2023; 14:1172. [PMID: 36859533 PMCID: PMC9977773 DOI: 10.1038/s41467-023-36894-2] [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: 05/25/2022] [Accepted: 02/22/2023] [Indexed: 03/03/2023] Open
Abstract
The hypoxic ventilatory response (HVR) is a life-saving reflex, triggered by the activation of chemoreceptor glomus cells in the carotid body (CB) connected with the brainstem respiratory center. The molecular mechanisms underlying glomus cell acute oxygen (O2) sensing are unclear. Genetic disruption of mitochondrial complex I (MCI) selectively abolishes the HVR and glomus cell responsiveness to hypoxia. However, it is unknown what functions of MCI (metabolic, proton transport, or signaling) are essential for O2 sensing. Here we show that transgenic mitochondrial expression of NDI1, a single-molecule yeast NADH/quinone oxidoreductase that does not directly contribute to proton pumping, fully recovers the HVR and glomus cell sensitivity to hypoxia in MCI-deficient mice. Therefore, maintenance of mitochondrial NADH dehydrogenase activity and the electron transport chain are absolutely necessary for O2-dependent regulation of breathing. NDI1 expression also rescues other systemic defects caused by MCI deficiency. These data explain the role of MCI in acute O2 sensing by arterial chemoreceptors and demonstrate the optimal recovery of complex organismal functions by gene therapy.
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Viscomi C, Zeviani M. Experimental therapy for mitochondrial diseases. HANDBOOK OF CLINICAL NEUROLOGY 2023; 194:259-277. [PMID: 36813318 DOI: 10.1016/b978-0-12-821751-1.00013-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Mitochondrial diseases are extremely heterogeneous genetic disorders due to faulty oxidative phosphorylation (OxPhos). No cure is currently available for these conditions, beside supportive interventions aimed at relieving complications. Mitochondria are under a double genetic control carried out by the mitochondrial DNA (mtDNA) and by nuclear DNA. Thus, not surprisingly, mutations in either genome can cause mitochondrial disease. Although mitochondria are usually associated with respiration and ATP synthesis, they play fundamental roles in a large number of other biochemical, signaling, and execution pathways, each being a potential target for therapeutic interventions. These can be classified as general therapies, i.e., potentially applicable to a number of different mitochondrial conditions, or therapies tailored to a single disease, i.e., personalized approaches, such as gene therapy, cell therapy, and organ replacement. Mitochondrial medicine is a particularly lively research field, and the last few years witnessed a steady increase in the number of clinical applications. This chapter will present the most recent therapeutic attempts emerged from preclinical work and an update of the currently ongoing clinical applications. We think that we are starting a new era in which the etiologic treatment of these conditions is becoming a realistic option.
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Affiliation(s)
- Carlo Viscomi
- Department of Biomedical Sciences, University of Padova, Padova, Italy.
| | - Massimo Zeviani
- Department of Neurosciences, University of Padova, Padova, Italy; Venetian Institute of Molecular Medicine, Padova, Italy.
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5
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Hernansanz-Agustín P, Enríquez JA. Alternative respiratory oxidases to study the animal electron transport chain. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2023; 1864:148936. [PMID: 36395975 DOI: 10.1016/j.bbabio.2022.148936] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Revised: 10/05/2022] [Accepted: 11/06/2022] [Indexed: 11/16/2022]
Abstract
Oxidative phosphorylation is a common process to most organisms in which the main function is to generate an electrochemical gradient across the inner mitochondrial membrane (IMM) and to make energy available to the cell. However, plants, many fungi and some animals maintain non-energy conserving oxidases which serve as a bypass to coupled respiration. Namely, the alternative NADH:ubiquinone oxidoreductase NDI1, present in the complex I (CI)-lacking Saccharomyces cerevisiae, and the alternative oxidase, ubiquinol:oxygen oxidoreductase AOX, present in many organisms across different kingdoms. In the last few years, these alternative oxidases have been used to dissect previously indivisible processes in bioenergetics and have helped to discover, understand, and corroborate important processes in mitochondria. Here, we review how the use of alternative oxidases have contributed to the knowledge in CI stability, bioenergetics, redox biology, and the implications of their use in current and future research.
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Affiliation(s)
- Pablo Hernansanz-Agustín
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain; Centro de Investigaciones Biomédicas en Red en Fragilidad y Envejecimiento saludable (CIBERFES), 28029 Madrid, Spain.
| | - José Antonio Enríquez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), 28029 Madrid, Spain; Centro de Investigaciones Biomédicas en Red en Fragilidad y Envejecimiento saludable (CIBERFES), 28029 Madrid, Spain.
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6
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El-Khoury R, Rak M, Bénit P, Jacobs HT, Rustin P. Cyanide resistant respiration and the alternative oxidase pathway: A journey from plants to mammals. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2022; 1863:148567. [PMID: 35500614 DOI: 10.1016/j.bbabio.2022.148567] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2021] [Revised: 04/06/2022] [Accepted: 04/18/2022] [Indexed: 12/19/2022]
Abstract
In a large number of organisms covering all phyla, the mitochondrial respiratory chain harbors, in addition to the conventional elements, auxiliary proteins that confer adaptive metabolic plasticity. The alternative oxidase (AOX) represents one of the most studied auxiliary proteins, initially identified in plants. In contrast to the standard respiratory chain, the AOX mediates a thermogenic cyanide-resistant respiration; a phenomenon that has been of great interest for over 2 centuries in that energy is not conserved when electrons flow through it. Here we summarize centuries of studies starting from the early observations of thermogenicity in plants and the identification of cyanide resistant respiration, to the fascinating discovery of the AOX and its current applications in animals under normal and pathological conditions.
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Affiliation(s)
- Riyad El-Khoury
- American University of Beirut Medical Center, Pathology and Laboratory Medicine Department, Cairo Street, Hamra, Beirut, Lebanon
| | - Malgorzata Rak
- Université Paris Cité, Inserm, Maladies neurodéveloppementales et neurovasculaires, F-75019 Paris, France
| | - Paule Bénit
- Université Paris Cité, Inserm, Maladies neurodéveloppementales et neurovasculaires, F-75019 Paris, France
| | - Howard T Jacobs
- Faculty of Medicine and Health Technology, FI-33014, Tampere University, Finland; Institute of Biotechnology, University of Helsinki, Helsinki, Finland.
| | - Pierre Rustin
- Université Paris Cité, Inserm, Maladies neurodéveloppementales et neurovasculaires, F-75019 Paris, France.
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7
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Hamann A, Osiewacz HD. To die or not to die - How mitochondrial processes affect lifespan of Podospora anserina. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2022; 1863:148568. [PMID: 35533726 DOI: 10.1016/j.bbabio.2022.148568] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2022] [Revised: 04/12/2022] [Accepted: 05/02/2022] [Indexed: 12/22/2022]
Abstract
The filamentous ascomycete Podospora anserina is a well-established model system to study organismic aging. Its senescence syndrome has been investigated for more than fifty years and turned out to have a strong mitochondrial etiology. Several different mitochondrial pathways were demonstrated to affect aging and lifespan. Here, we present an update of the literature focusing on the cooperative interplay between different processes.
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Affiliation(s)
- Andrea Hamann
- Institute of Molecular Biosciences, J. W. Goethe University, Frankfurt am Main, Germany.
| | - Heinz D Osiewacz
- Institute of Molecular Biosciences, J. W. Goethe University, Frankfurt am Main, Germany.
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8
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Targeting the alternative oxidase (AOX) for human health and food security, a pharmaceutical and agrochemical target or a rescue mechanism? Biochem J 2022; 479:1337-1359. [PMID: 35748702 PMCID: PMC9246349 DOI: 10.1042/bcj20180192] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2022] [Revised: 05/23/2022] [Accepted: 06/07/2022] [Indexed: 11/25/2022]
Abstract
Some of the most threatening human diseases are due to a blockage of the mitochondrial electron transport chain (ETC). In a variety of plants, fungi, and prokaryotes, there is a naturally evolved mechanism for such threats to viability, namely a bypassing of the blocked portion of the ETC by alternative enzymes of the respiratory chain. One such enzyme is the alternative oxidase (AOX). When AOX is expressed, it enables its host to survive life-threatening conditions or, as in parasites, to evade host defenses. In vertebrates, this mechanism has been lost during evolution. However, we and others have shown that transfer of AOX into the genome of the fruit fly and mouse results in a catalytically engaged AOX. This implies that not only is the AOX a promising target for combating human or agricultural pathogens but also a novel approach to elucidate disease mechanisms or, in several cases, potentially a therapeutic cure for human diseases. In this review, we highlight the varying functions of AOX in their natural hosts and upon xenotopic expression, and discuss the resulting need to develop species-specific AOX inhibitors.
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9
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Roy A, Kandettu A, Ray S, Chakrabarty S. Mitochondrial DNA replication and repair defects: Clinical phenotypes and therapeutic interventions. BIOCHIMICA ET BIOPHYSICA ACTA. BIOENERGETICS 2022; 1863:148554. [PMID: 35341749 DOI: 10.1016/j.bbabio.2022.148554] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/19/2021] [Revised: 03/06/2022] [Accepted: 03/16/2022] [Indexed: 12/15/2022]
Abstract
Mitochondria is a unique cellular organelle involved in multiple cellular processes and is critical for maintaining cellular homeostasis. This semi-autonomous organelle contains its circular genome - mtDNA (mitochondrial DNA), that undergoes continuous cycles of replication and repair to maintain the mitochondrial genome integrity. The majority of the mitochondrial genes, including mitochondrial replisome and repair genes, are nuclear-encoded. Although the repair machinery of mitochondria is quite efficient, the mitochondrial genome is highly susceptible to oxidative damage and other types of exogenous and endogenous agent-induced DNA damage, due to the absence of protective histones and their proximity to the main ROS production sites. Mutations in replication and repair genes of mitochondria can result in mtDNA depletion and deletions subsequently leading to mitochondrial genome instability. The combined action of mutations and deletions can result in compromised mitochondrial genome maintenance and lead to various mitochondrial disorders. Here, we review the mechanism of mitochondrial DNA replication and repair process, key proteins involved, and their altered function in mitochondrial disorders. The focus of this review will be on the key genes of mitochondrial DNA replication and repair machinery and the clinical phenotypes associated with mutations in these genes.
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Affiliation(s)
- Abhipsa Roy
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Amoolya Kandettu
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India
| | - Swagat Ray
- Department of Life Sciences, School of Life and Environmental Sciences, University of Lincoln, Lincoln LN6 7TS, United Kingdom
| | - Sanjiban Chakrabarty
- Department of Cell and Molecular Biology, Manipal School of Life Sciences, Manipal Academy of Higher Education, Manipal 576104, Karnataka, India.
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10
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Experimental Setup for Investigation of Acute Mitochondrial Oxygen Sensing in Primary Cells. Methods Mol Biol 2022; 2497:301-311. [PMID: 35771451 DOI: 10.1007/978-1-0716-2309-1_20] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The ability to sense and respond to acute changes in oxygen is essential for the viability of cells and organisms. To study molecular mechanisms of acute oxygen sensing, we established a setup for the adjustment of acute hypoxic conditions in cultured cells, exemplified here for the use of primary pulmonary arterial smooth muscle cells (PASMCs). The mitochondrial electron transport chain (ETC) is the main consumer of oxygen but recently also emerged as essential oxygen sensor suggesting that the ETC itself adapts its electron flux to oxygen availability. To test this assumption and to experimentally manipulate electron flux through the ETC, we used alternative oxidase (AOX), which bypasses the cytochrome pathway of the ETC when blocked. The described combination of our experimental setup and AOX allowed us in previous publications unprecedented insights into the role of the ETC in cellular oxygen sensing and cellular response mechanisms in living cells. Against this background, we here describe and discuss this method in detail, which will allow transfer to other cell types and research questions.
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11
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Measuring the Mitochondrial Ubiquinone (Q) Pool Redox State in Isolated Respiring Mitochondria. Methods Mol Biol 2022; 2497:291-299. [PMID: 35771450 DOI: 10.1007/978-1-0716-2309-1_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The ubiquinone (Q) pool represents a node in the mitochondrial electron transport chain (ETC) onto which the electrons of all respiratory dehydrogenases converge. The redox state of the Q pool correlates closely with the electron flux through the ETC and is thus a parameter of great metabolic value for both the mitochondrial and cellular metabolism. Here, we describe the simultaneous measurement of respiratory rates of isolated mouse heart mitochondria and the redox state of their Q pool using a custom-made combination of a Clark-type oxygen electrode and a Q electrode.
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12
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Alternative oxidase encoded by sequence-optimized and chemically-modified RNA transfected into mammalian cells is catalytically active. Gene Ther 2022; 29:655-664. [PMID: 33664504 PMCID: PMC9750868 DOI: 10.1038/s41434-021-00235-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2020] [Revised: 01/06/2021] [Accepted: 01/26/2021] [Indexed: 01/09/2023]
Abstract
Plants and other organisms, but not insects or vertebrates, express the auxiliary respiratory enzyme alternative oxidase (AOX) that bypasses mitochondrial respiratory complexes III and/or IV when impaired. Persistent expression of AOX from Ciona intestinalis in mammalian models has previously been shown to be effective in alleviating some metabolic stresses produced by respiratory chain inhibition while exacerbating others. This implies that chronic AOX expression may modify or disrupt metabolic signaling processes necessary to orchestrate adaptive remodeling, suggesting that its potential therapeutic use may be confined to acute pathologies, where a single course of treatment would suffice. One possible route for administering AOX transiently is AOX-encoding nucleic acid constructs. Here we demonstrate that AOX-encoding chemically-modified RNA (cmRNA), sequence-optimized for expression in mammalian cells, was able to support AOX expression in immortalized mouse embryonic fibroblasts (iMEFs), human lung carcinoma cells (A549) and primary mouse pulmonary arterial smooth muscle cells (PASMCs). AOX protein was detectable as early as 3 h after transfection, had a half-life of ~4 days and was catalytically active, thus supporting respiration and protecting against respiratory inhibition. Our data demonstrate that AOX-encoding cmRNA optimized for use in mammalian cells represents a viable route to investigate and possibly treat mitochondrial respiratory disorders.
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13
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Spinelli JB, Rosen PC, Sprenger HG, Puszynska AM, Mann JL, Roessler JM, Cangelosi AL, Henne A, Condon KJ, Zhang T, Kunchok T, Lewis CA, Chandel NS, Sabatini DM. Fumarate is a terminal electron acceptor in the mammalian electron transport chain. Science 2021; 374:1227-1237. [PMID: 34855504 PMCID: PMC8803114 DOI: 10.1126/science.abi7495] [Citation(s) in RCA: 90] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
For electrons to continuously enter and flow through the mitochondrial electron transport chain (ETC), they must ultimately land on a terminal electron acceptor (TEA), which is known to be oxygen in mammals. Paradoxically, we find that complex I and dihydroorotate dehydrogenase (DHODH) can still deposit electrons into the ETC when oxygen reduction is impeded. Cells lacking oxygen reduction accumulate ubiquinol, driving the succinate dehydrogenase (SDH) complex in reverse to enable electron deposition onto fumarate. Upon inhibition of oxygen reduction, fumarate reduction sustains DHODH and complex I activities. Mouse tissues display varying capacities to use fumarate as a TEA, most of which net reverse the SDH complex under hypoxia. Thus, we delineate a circuit of electron flow in the mammalian ETC that maintains mitochondrial functions under oxygen limitation.
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Affiliation(s)
- Jessica B. Spinelli
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
- Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Paul C. Rosen
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
- Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Hans-Georg Sprenger
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
- Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Anna M. Puszynska
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
- Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jessica L. Mann
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
- Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Julian M. Roessler
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
- Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Andrew L. Cangelosi
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
- Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Antonia Henne
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
| | - Kendall J. Condon
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
- Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tong Zhang
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
- Howard Hughes Medical Institute, Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Tenzin Kunchok
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
| | - Caroline A. Lewis
- Whitehead Institute for Biomedical Research, Cambridge, MA 02142, USA
| | - Navdeep S. Chandel
- Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - David M. Sabatini
- Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
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14
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Merlin J, Ivanov S, Dumont A, Sergushichev A, Gall J, Stunault M, Ayrault M, Vaillant N, Castiglione A, Swain A, Orange F, Gallerand A, Berton T, Martin JC, Carobbio S, Masson J, Gaisler-Salomon I, Maechler P, Rayport S, Sluimer JC, Biessen EAL, Guinamard RR, Gautier EL, Thorp EB, Artyomov MN, Yvan-Charvet L. Non-canonical glutamine transamination sustains efferocytosis by coupling redox buffering to oxidative phosphorylation. Nat Metab 2021; 3:1313-1326. [PMID: 34650273 PMCID: PMC7611882 DOI: 10.1038/s42255-021-00471-y] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 09/06/2021] [Indexed: 12/04/2022]
Abstract
Macrophages rely on tightly integrated metabolic rewiring to clear dying neighboring cells by efferocytosis during homeostasis and disease. Here we reveal that glutaminase-1-mediated glutaminolysis is critical to promote apoptotic cell clearance by macrophages during homeostasis in mice. In addition, impaired macrophage glutaminolysis exacerbates atherosclerosis, a condition during which, efficient apoptotic cell debris clearance is critical to limit disease progression. Glutaminase-1 expression strongly correlates with atherosclerotic plaque necrosis in patients with cardiovascular diseases. High-throughput transcriptional and metabolic profiling reveals that macrophage efferocytic capacity relies on a non-canonical transaminase pathway, independent from the traditional requirement of glutamate dehydrogenase to fuel ɑ-ketoglutarate-dependent immunometabolism. This pathway is necessary to meet the unique requirements of efferocytosis for cellular detoxification and high-energy cytoskeletal rearrangements. Thus, we uncover a role for non-canonical glutamine metabolism for efficient clearance of dying cells and maintenance of tissue homeostasis during health and disease in mouse and humans.
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Affiliation(s)
- Johanna Merlin
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France
| | - Stoyan Ivanov
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France
| | - Adélie Dumont
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France
| | | | - Julie Gall
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France
| | - Marion Stunault
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France
| | - Marion Ayrault
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France
| | - Nathalie Vaillant
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France
| | - Alexia Castiglione
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France
| | - Amanda Swain
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
| | - Francois Orange
- Université Côte d'Azur, Centre Commun de Microscopie Appliquée (CCMA), Nice, France
| | - Alexandre Gallerand
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France
| | - Thierry Berton
- Centre de Recherche Cardiovasculaire et Nutritionnelle (C2VN), INSERM, Institut National de la Recherche Agricole (INRA), BioMet, Aix-Marseille University, Marseille, France
| | - Jean-Charles Martin
- Centre de Recherche Cardiovasculaire et Nutritionnelle (C2VN), INSERM, Institut National de la Recherche Agricole (INRA), BioMet, Aix-Marseille University, Marseille, France
| | - Stefania Carobbio
- Department of Cell Physiology and Metabolism, University of Geneva Medical Centre, Geneva, Switzerland
- Wellcome Trust Sanger Institute, Wellcome Trust Genome Campus, Hinxton, UK
- Metabolic Research Laboratories, Addenbrooke's Treatment Centre, Institute of Metabolic Science, Addenbrooke's Hospital, University of Cambridge, Cambridge, UK
| | - Justine Masson
- Inserm UMR-S1270, Institut du Fer à Moulin, Sorbonne Université, Paris, France
- Department of Molecular Therapeutics, NYS Psychiatric Institute, New York, NY, USA
| | - Inna Gaisler-Salomon
- Department of Molecular Therapeutics, NYS Psychiatric Institute, New York, NY, USA
- Department of Psychiatry, Columbia University, New York, NY, USA
- SPC-IBBR, University of Haifa, Haifa, Israel
| | - Pierre Maechler
- Department of Cell Physiology and Metabolism, University of Geneva Medical Centre, Geneva, Switzerland
| | - Stephen Rayport
- Department of Molecular Therapeutics, NYS Psychiatric Institute, New York, NY, USA
- Department of Psychiatry, Columbia University, New York, NY, USA
| | - Judith C Sluimer
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Erik A L Biessen
- Department of Pathology, Cardiovascular Research Institute Maastricht, Maastricht University Medical Center, Maastricht, the Netherlands
- Institute for Molecular Cardiovascular Research, RWTH Klinikum Aachen, Aachen, Germany
| | - Rodolphe R Guinamard
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France
| | | | - Edward B Thorp
- Department of Pathology, Northwestern University, Feinberg School of Medicine, Chicago, IL, USA
| | - Maxim N Artyomov
- Department of Pathology and Immunology, Washington University School of Medicine, St. Louis, MO, USA
| | - Laurent Yvan-Charvet
- Institut National de la Santé et de la Recherche Médicale (Inserm) U1065, Université Côte d'Azur, Centre Méditerranéen de Médecine Moléculaire (C3M), Centre National de la Recherche Scientifique (CNRS) (R.G.), Atip-Avenir, Fédération Hospitalo-Universitaire (FHU) Oncoage, Nice, France.
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15
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Organization of the Respiratory Supercomplexes in Cells with Defective Complex III: Structural Features and Metabolic Consequences. Life (Basel) 2021; 11:life11040351. [PMID: 33920624 PMCID: PMC8074069 DOI: 10.3390/life11040351] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Revised: 04/12/2021] [Accepted: 04/14/2021] [Indexed: 12/13/2022] Open
Abstract
The mitochondrial respiratory chain encompasses four oligomeric enzymatic complexes (complex I, II, III and IV) which, together with the redox carrier ubiquinone and cytochrome c, catalyze electron transport coupled to proton extrusion from the inner membrane. The protonmotive force is utilized by complex V for ATP synthesis in the process of oxidative phosphorylation. Respiratory complexes are known to coexist in the membrane as single functional entities and as supramolecular aggregates or supercomplexes (SCs). Understanding the assembly features of SCs has relevant biomedical implications because defects in a single protein can derange the overall SC organization and compromise the energetic function, causing severe mitochondrial disorders. Here we describe in detail the main types of SCs, all characterized by the presence of complex III. We show that the genetic alterations that hinder the assembly of Complex III, not just the activity, cause a rearrangement of the architecture of the SC that can help to preserve a minimal energetic function. Finally, the major metabolic disturbances associated with severe SCs perturbation due to defective complex III are discussed along with interventions that may circumvent these deficiencies.
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16
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Scialo F, Sanz A. Coenzyme Q redox signalling and longevity. Free Radic Biol Med 2021; 164:187-205. [PMID: 33450379 DOI: 10.1016/j.freeradbiomed.2021.01.018] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 12/31/2020] [Accepted: 01/06/2021] [Indexed: 12/29/2022]
Abstract
Mitochondria are the powerhouses of the cell. They produce a significant amount of the energy we need to grow, survive and reproduce. The same system that generates energy in the form of ATP also produces Reactive Oxygen Species (ROS). Mitochondrial Reactive Oxygen Species (mtROS) were considered for many years toxic by-products of metabolism, responsible for ageing and many degenerative diseases. Today, we know that mtROS are essential redox messengers required to determine cell fate and maintain cellular homeostasis. Most mtROS are produced by respiratory complex I (CI) and complex III (CIII). How and when CI and CIII produce ROS is determined by the redox state of the Coenzyme Q (CoQ) pool and the proton motive force (pmf) generated during respiration. During ageing, there is an accumulation of defective mitochondria that generate high levels of mtROS. This causes oxidative stress and disrupts redox signalling. Here, we review how mtROS are generated in young and old mitochondria and how CI and CIII derived ROS control physiological and pathological processes. Finally, we discuss why damaged mitochondria amass during ageing as well as methods to preserve mitochondrial redox signalling with age.
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Affiliation(s)
- Filippo Scialo
- Dipartimento di Scienze Mediche Traslazionali, Università della Campania "Luigi Vanvitelli", 80131, Napoli, Italy
| | - Alberto Sanz
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, G12 8QQ, Glasgow, United Kingdom.
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17
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Onyango IG, Bennett JP, Stokin GB. Regulation of neuronal bioenergetics as a therapeutic strategy in neurodegenerative diseases. Neural Regen Res 2021; 16:1467-1482. [PMID: 33433460 PMCID: PMC8323696 DOI: 10.4103/1673-5374.303007] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Neurodegenerative diseases such as Alzheimer's disease, Parkinson's disease, Huntington's disease, and amyotrophic lateral sclerosis are a heterogeneous group of debilitating disorders with multifactorial etiologies and pathogeneses that manifest distinct molecular mechanisms and clinical manifestations with abnormal protein dynamics and impaired bioenergetics. Mitochondrial dysfunction is emerging as an important feature in the etiopathogenesis of these age-related neurodegenerative diseases. The prevalence and incidence of these diseases is on the rise with the increasing global population and average lifespan. Although many therapeutic approaches have been tested, there are currently no effective treatment routes for the prevention or cure of these diseases. We present the current status of our knowledge and understanding of the involvement of mitochondrial dysfunction in these diseases and highlight recent advances in novel therapeutic strategies targeting neuronal bioenergetics as potential approach for treating these diseases.
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Affiliation(s)
- Isaac G Onyango
- Center for Translational Medicine, International Clinical Research Centre (ICRC), St. Anne's University Hospital, Brno, Czech Republic
| | - James P Bennett
- Neurodegeneration Therapeutics, 3050A Berkmar Drive, Charlottesville, VA, USA
| | - Gorazd B Stokin
- Center for Translational Medicine, International Clinical Research Centre (ICRC), St. Anne's University Hospital, Brno, Czech Republic
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18
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Pitceathly RD, Keshavan N, Rahman J, Rahman S. Moving towards clinical trials for mitochondrial diseases. J Inherit Metab Dis 2021; 44:22-41. [PMID: 32618366 PMCID: PMC8432143 DOI: 10.1002/jimd.12281] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 06/22/2020] [Accepted: 06/30/2020] [Indexed: 12/11/2022]
Abstract
Primary mitochondrial diseases represent some of the most common and severe inherited metabolic disorders, affecting ~1 in 4,300 live births. The clinical and molecular diversity typified by mitochondrial diseases has contributed to the lack of licensed disease-modifying therapies available. Management for the majority of patients is primarily supportive. The failure of clinical trials in mitochondrial diseases partly relates to the inefficacy of the compounds studied. However, it is also likely to be a consequence of the significant challenges faced by clinicians and researchers when designing trials for these disorders, which have historically been hampered by a lack of natural history data, biomarkers and outcome measures to detect a treatment effect. Encouragingly, over the past decade there have been significant advances in therapy development for mitochondrial diseases, with many small molecules now transitioning from preclinical to early phase human interventional studies. In this review, we present the treatments and management strategies currently available to people with mitochondrial disease. We evaluate the challenges and potential solutions to trial design and highlight the emerging pharmacological and genetic strategies that are moving from the laboratory to clinical trials for this group of disorders.
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Affiliation(s)
- Robert D.S. Pitceathly
- Department of Neuromuscular DiseasesUCL Queen Square Institute of Neurology and The National Hospital for Neurology and NeurosurgeryLondonUK
| | - Nandaki Keshavan
- Mitochondrial Research GroupUCL Great Ormond Street Institute of Child HealthLondonUK
- Metabolic UnitGreat Ormond Street Hospital for Children NHS Foundation TrustLondonUK
| | - Joyeeta Rahman
- Mitochondrial Research GroupUCL Great Ormond Street Institute of Child HealthLondonUK
| | - Shamima Rahman
- Mitochondrial Research GroupUCL Great Ormond Street Institute of Child HealthLondonUK
- Metabolic UnitGreat Ormond Street Hospital for Children NHS Foundation TrustLondonUK
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19
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Bottani E, Lamperti C, Prigione A, Tiranti V, Persico N, Brunetti D. Therapeutic Approaches to Treat Mitochondrial Diseases: "One-Size-Fits-All" and "Precision Medicine" Strategies. Pharmaceutics 2020; 12:E1083. [PMID: 33187380 PMCID: PMC7696526 DOI: 10.3390/pharmaceutics12111083] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Revised: 11/08/2020] [Accepted: 11/09/2020] [Indexed: 12/11/2022] Open
Abstract
Primary mitochondrial diseases (PMD) refer to a group of severe, often inherited genetic conditions due to mutations in the mitochondrial genome or in the nuclear genes encoding for proteins involved in oxidative phosphorylation (OXPHOS). The mutations hamper the last step of aerobic metabolism, affecting the primary source of cellular ATP synthesis. Mitochondrial diseases are characterized by extremely heterogeneous symptoms, ranging from organ-specific to multisystemic dysfunction with different clinical courses. The limited information of the natural history, the limitations of currently available preclinical models, coupled with the large variability of phenotypical presentations of PMD patients, have strongly penalized the development of effective therapies. However, new therapeutic strategies have been emerging, often with promising preclinical and clinical results. Here we review the state of the art on experimental treatments for mitochondrial diseases, presenting "one-size-fits-all" approaches and precision medicine strategies. Finally, we propose novel perspective therapeutic plans, either based on preclinical studies or currently used for other genetic or metabolic diseases that could be transferred to PMD.
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Affiliation(s)
- Emanuela Bottani
- Department of Diagnostics and Public Health, Section of Pharmacology, University of Verona, 37134 Verona, Italy
| | - Costanza Lamperti
- Medical Genetics and Neurogenetics Unit, Fondazione IRCCS Istituto Neurologico C. Besta, 20126 Milan, Italy; (C.L.); (V.T.)
| | - Alessandro Prigione
- Department of General Pediatrics, Neonatology, and Pediatric Cardiology, University Clinic Düsseldorf (UKD), Heinrich Heine University (HHU), 40225 Dusseldorf, Germany;
| | - Valeria Tiranti
- Medical Genetics and Neurogenetics Unit, Fondazione IRCCS Istituto Neurologico C. Besta, 20126 Milan, Italy; (C.L.); (V.T.)
| | - Nicola Persico
- Department of Clinical Science and Community Health, University of Milan, 20122 Milan, Italy;
- Fetal Medicine and Surgery Service, Fondazione IRCCS Ca’ Granda, Ospedale Maggiore Policlinico, 20122 Milan, Italy
| | - Dario Brunetti
- Medical Genetics and Neurogenetics Unit, Fondazione IRCCS Istituto Neurologico C. Besta, 20126 Milan, Italy; (C.L.); (V.T.)
- Department of Medical Biotechnology and Translational Medicine, University of Milan, 20129 Milan, Italy
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20
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Tort F, Barredo E, Parthasarathy R, Ugarteburu O, Ferrer-Cortès X, García-Villoria J, Gort L, González-Quintana A, Martín MA, Fernández-Vizarra E, Zeviani M, Ribes A. Biallelic mutations in NDUFA8 cause complex I deficiency in two siblings with favorable clinical evolution. Mol Genet Metab 2020; 131:349-357. [PMID: 33153867 DOI: 10.1016/j.ymgme.2020.10.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/09/2020] [Accepted: 10/09/2020] [Indexed: 01/08/2023]
Abstract
Isolated complex I (CI) deficiency is the most common cause of oxidative phosphorylation (OXPHOS) dysfunction. Whole-exome sequencing identified biallelic mutations in NDUFA8 (c.[293G > T]; [293G > T], encoding for an accessory subunit of CI, in two siblings with a favorable clinical evolution. The individuals reported here are practically asymptomatic, with the exception of slight failure to thrive and some language difficulties at the age of 6 and 9 years, respectively. These observations are remarkable since the vast majority of patients with CI deficiency, including the only NDUFA8 patient reported so far, showed an extremely poor clinical outcome. Western blot studies demonstrated that NDUFA8 protein was strongly reduced in the patients' fibroblasts and muscle extracts. In addition, there was a marked and specific decrease in the steady-state levels of CI subunits. BN-PAGE demonstrated an isolated defect in the assembly and the activity of CI with impaired supercomplexes formation and abnormal accumulation of CI subassemblies. Confocal microscopy analysis in fibroblasts showed rounder mitochondria and diminished branching degree of the mitochondrial network. Functional complementation studies demonstrated disease-causality for the identified mutation as lentiviral transduction with wild-type NDUFA8 cDNA restored the steady-state levels of CI subunits and completely recovered the deficient enzymatic activity in immortalized mutant fibroblasts. In summary, we provide additional evidence of the involvement of NDUFA8 as a mitochondrial disease-causing gene associated with altered mitochondrial morphology, CI deficiency, impaired supercomplexes formation, and very mild progression of the disease.
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Affiliation(s)
- Frederic Tort
- Secció d'Errors Congènits del Metabolisme-IBC, Servei de Bioquímica i Genètica Molecular, Hospital Clínic, IDIBAPS, CIBERER, Barcelona, Spain
| | | | | | - Olatz Ugarteburu
- Secció d'Errors Congènits del Metabolisme-IBC, Servei de Bioquímica i Genètica Molecular, Hospital Clínic, IDIBAPS, CIBERER, Barcelona, Spain
| | - Xenia Ferrer-Cortès
- Secció d'Errors Congènits del Metabolisme-IBC, Servei de Bioquímica i Genètica Molecular, Hospital Clínic, IDIBAPS, CIBERER, Barcelona, Spain
| | - Judit García-Villoria
- Secció d'Errors Congènits del Metabolisme-IBC, Servei de Bioquímica i Genètica Molecular, Hospital Clínic, IDIBAPS, CIBERER, Barcelona, Spain
| | - Laura Gort
- Secció d'Errors Congènits del Metabolisme-IBC, Servei de Bioquímica i Genètica Molecular, Hospital Clínic, IDIBAPS, CIBERER, Barcelona, Spain
| | - Adrián González-Quintana
- Laboratorio de Enfermedades Mitocondriales, Servicio de Bioquímica, Instituto de Investigación Hospital, 12 de Octubre (imas12), CIBERER, Madrid, Spain
| | - Miguel A Martín
- Laboratorio de Enfermedades Mitocondriales, Servicio de Bioquímica, Instituto de Investigación Hospital, 12 de Octubre (imas12), CIBERER, Madrid, Spain
| | | | - Massimo Zeviani
- MRC-Mitochondrial Biology Unit, University of Cambridge, Cambridge, UK
| | - Antonia Ribes
- Secció d'Errors Congènits del Metabolisme-IBC, Servei de Bioquímica i Genètica Molecular, Hospital Clínic, IDIBAPS, CIBERER, Barcelona, Spain.
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21
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Vadlakonda L, Indracanti M, Kalangi SK, Gayatri BM, Naidu NG, Reddy ABM. The Role of Pi, Glutamine and the Essential Amino Acids in Modulating the Metabolism in Diabetes and Cancer. J Diabetes Metab Disord 2020; 19:1731-1775. [PMID: 33520860 DOI: 10.1007/s40200-020-00566-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 06/04/2020] [Indexed: 02/07/2023]
Abstract
Purpose Re-examine the current metabolic models. Methods Review of literature and gene networks. Results Insulin activates Pi uptake, glutamine metabolism to stabilise lipid membranes. Tissue turnover maintains the metabolic health. Current model of intermediary metabolism (IM) suggests glucose is the source of energy, and anaplerotic entry of fatty acids and amino acids into mitochondria increases the oxidative capacity of the TCA cycle to produce the energy (ATP). The reduced cofactors, NADH and FADH2, have different roles in regulating the oxidation of nutrients, membrane potentials and biosynthesis. Trans-hydrogenation of NADH to NADPH activates the biosynthesis. FADH2 sustains the membrane potential during the cell transformations. Glycolytic enzymes assume the non-canonical moonlighting functions, enter the nucleus to remodel the genetic programmes to affect the tissue turnover for efficient use of nutrients. Glycosylation of the CD98 (4F2HC) stabilises the nutrient transporters and regulates the entry of cysteine, glutamine and BCAA into the cells. A reciprocal relationship between the leucine and glutamine entry into cells regulates the cholesterol and fatty acid synthesis and homeostasis in cells. Insulin promotes the Pi transport from the blood to tissues, activates the mitochondrial respiratory activity, and glutamine metabolism, which activates the synthesis of cholesterol and the de novo fatty acids for reorganising and stabilising the lipid membranes for nutrient transport and signal transduction in response to fluctuations in the microenvironmental cues. Fatty acids provide the lipid metabolites, activate the second messengers and protein kinases. Insulin resistance suppresses the lipid raft formation and the mitotic slippage activates the fibrosis and slow death pathways.
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Affiliation(s)
| | - Meera Indracanti
- Institute of Biotechnology, University of Gondar, Gondar, Ethiopia
| | - Suresh K Kalangi
- Amity Stem Cell Institute, Amity University Haryana, Amity Education Valley Pachgaon, Manesar, Gurugram, HR 122413 India
| | - B Meher Gayatri
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
| | - Navya G Naidu
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
| | - Aramati B M Reddy
- Department of Animal Biology, School of Life Sciences, University of Hyderabad, Hyderabad, 500046 India
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22
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Calvo E, Cogliati S, Hernansanz-Agustín P, Loureiro-López M, Guarás A, Casuso RA, García-Marqués F, Acín-Pérez R, Martí-Mateos Y, Silla-Castro JC, Carro-Alvarellos M, Huertas JR, Vázquez J, Enríquez JA. Functional role of respiratory supercomplexes in mice: SCAF1 relevance and segmentation of the Q pool. SCIENCE ADVANCES 2020; 6:eaba7509. [PMID: 32637615 PMCID: PMC7314541 DOI: 10.1126/sciadv.aba7509] [Citation(s) in RCA: 65] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 05/08/2020] [Indexed: 05/16/2023]
Abstract
Mitochondrial respiratory complexes assemble into supercomplexes (SC). Q-respirasome (III2 + IV) requires the supercomplex assembly factor (SCAF1) protein. The role of this factor in the N-respirasome (I + III2 + IV) and the physiological role of SCs are controversial. Here, we study C57BL/6J mice harboring nonfunctional SCAF1, the full knockout for SCAF1, or the wild-type version of the protein and found that exercise performance is SCAF1 dependent. By combining quantitative data-independent proteomics, 2D Blue native gel electrophoresis, and functional analysis of enriched respirasome fractions, we show that SCAF1 confers structural attachment between III2 and IV within the N-respirasome, increases NADH-dependent respiration, and reduces reactive oxygen species (ROS). Furthermore, the expression of AOX in cells and mice confirms that CI-CIII superassembly segments the CoQ in two pools and modulates CI-NADH oxidative capacity.
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Affiliation(s)
- Enrique Calvo
- Centro Nacional de Investigaciones Cardiovasculares Carlos III. Madrid 28029, Spain
| | - Sara Cogliati
- Centro Nacional de Investigaciones Cardiovasculares Carlos III. Madrid 28029, Spain
- Institute of Nutrition and Food Technology, Biomedical Research Centre, Department of Physiology, University of Granada
| | | | - Marta Loureiro-López
- Centro Nacional de Investigaciones Cardiovasculares Carlos III. Madrid 28029, Spain
| | - Adela Guarás
- Centro Nacional de Investigaciones Cardiovasculares Carlos III. Madrid 28029, Spain
| | - Rafael A. Casuso
- Institute of Nutrition and Food Technology, Biomedical Research Centre, Department of Physiology, University of Granada
| | | | - Rebeca Acín-Pérez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III. Madrid 28029, Spain
| | - Yolanda Martí-Mateos
- Centro Nacional de Investigaciones Cardiovasculares Carlos III. Madrid 28029, Spain
| | - JC. Silla-Castro
- Centro Nacional de Investigaciones Cardiovasculares Carlos III. Madrid 28029, Spain
| | | | - Jesús R. Huertas
- Institute of Nutrition and Food Technology, Biomedical Research Centre, Department of Physiology, University of Granada
| | - Jesús Vázquez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III. Madrid 28029, Spain
- CIBERCV, Madrid, Spain
| | - J. A. Enríquez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III. Madrid 28029, Spain
- CIBERFES, Madrid, Spain
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23
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Viscomi C, Zeviani M. Strategies for fighting mitochondrial diseases. J Intern Med 2020; 287:665-684. [PMID: 32100338 DOI: 10.1111/joim.13046] [Citation(s) in RCA: 42] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Revised: 11/10/2019] [Accepted: 01/24/2020] [Indexed: 12/19/2022]
Abstract
Mitochondrial diseases are extremely heterogeneous genetic conditions characterized by faulty oxidative phosphorylation (OXPHOS). OXPHOS deficiency can be the result of mutation in mtDNA genes, encoding either proteins (13 subunits of the mitochondrial complexes I, III, IV and V) or the tRNA and rRNA components of the in situ mtDNA translation. The remaining mitochondrial disease genes are in the nucleus, encoding proteins with a huge variety of functions, from structural subunits of the mitochondrial complexes, to factors involved in their formation and regulation, components of the mtDNA replication and expression machinery, biosynthetic enzymes for the biosynthesis or incorporation of prosthetic groups, components of the mitochondrial quality control and proteostasis, enzymes involved in the clearance of toxic compounds, factors involved in the formation of the lipid milieu, etc. These different functions represent potential targets for 'general' therapeutic interventions, as they may be adapted to a number of different mitochondrial conditions. This is in contrast with 'tailored', personalized therapeutic approaches, such as gene therapy, cell therapy and organ replacement, that can be useful only for individual conditions. This review will present the most recent concepts emerged from preclinical work and the attempts to translate them into the clinics. The common notion that mitochondrial disorders have no cure is currently challenged by a massive effort of scientists and clinicians, and we do expect that thanks to this intensive investigation work and tangible results for the development of strategies amenable to the treatment of patients with these tremendously difficult conditions are not so far away.
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Affiliation(s)
- C Viscomi
- From the, Department of Biomedical Sciences, University of Padova, Padova, Italy
| | - M Zeviani
- Department of Neurosciences, University of Padova, Padova, Italy.,Venetian Institute of Molecular Medicine, Padova, Italy
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24
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Daehn IS. Mitochondria Matter: A Critical Role of ADCK4 in Stabilizing the CoQ Complex in Podocytes in Steroid-Resistant Nephrotic Syndrome. J Am Soc Nephrol 2020; 31:1167-1169. [PMID: 32381602 DOI: 10.1681/asn.2020040467] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Affiliation(s)
- Ilse S Daehn
- Division of Nephrology, Department of Medicine, Icahn School of Medicine at Mount Sinai, New York City, New York
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25
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Protasoni M, Pérez‐Pérez R, Lobo‐Jarne T, Harbour ME, Ding S, Peñas A, Diaz F, Moraes CT, Fearnley IM, Zeviani M, Ugalde C, Fernández‐Vizarra E. Respiratory supercomplexes act as a platform for complex III-mediated maturation of human mitochondrial complexes I and IV. EMBO J 2020; 39:e102817. [PMID: 31912925 PMCID: PMC6996572 DOI: 10.15252/embj.2019102817] [Citation(s) in RCA: 88] [Impact Index Per Article: 22.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2019] [Revised: 11/02/2019] [Accepted: 11/26/2019] [Indexed: 02/02/2023] Open
Abstract
Mitochondrial respiratory chain (MRC) enzymes associate in supercomplexes (SCs) that are structurally interdependent. This may explain why defects in a single component often produce combined enzyme deficiencies in patients. A case in point is the alleged destabilization of complex I in the absence of complex III. To clarify the structural and functional relationships between complexes, we have used comprehensive proteomic, functional, and biogenetical approaches to analyze a MT-CYB-deficient human cell line. We show that the absence of complex III blocks complex I biogenesis by preventing the incorporation of the NADH module rather than decreasing its stability. In addition, complex IV subunits appeared sequestered within complex III subassemblies, leading to defective complex IV assembly as well. Therefore, we propose that complex III is central for MRC maturation and SC formation. Our results challenge the notion that SC biogenesis requires the pre-formation of fully assembled individual complexes. In contrast, they support a cooperative-assembly model in which the main role of complex III in SCs is to provide a structural and functional platform for the completion of overall MRC biogenesis.
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Affiliation(s)
- Margherita Protasoni
- Medical Research Council‐Mitochondrial Biology UnitUniversity of CambridgeCambridgeUK
| | | | | | - Michael E Harbour
- Medical Research Council‐Mitochondrial Biology UnitUniversity of CambridgeCambridgeUK
| | - Shujing Ding
- Medical Research Council‐Mitochondrial Biology UnitUniversity of CambridgeCambridgeUK
| | - Ana Peñas
- Instituto de Investigación Hospital 12 de Octubre (i+12)MadridSpain
| | - Francisca Diaz
- Department of NeurologyMiller School of MedicineUniversity of MiamiMiamiFLUSA
| | - Carlos T Moraes
- Department of NeurologyMiller School of MedicineUniversity of MiamiMiamiFLUSA
| | - Ian M Fearnley
- Medical Research Council‐Mitochondrial Biology UnitUniversity of CambridgeCambridgeUK
| | - Massimo Zeviani
- Medical Research Council‐Mitochondrial Biology UnitUniversity of CambridgeCambridgeUK
- Department of NeurosciencesUniversity of PadovaPadovaItaly
| | - Cristina Ugalde
- Instituto de Investigación Hospital 12 de Octubre (i+12)MadridSpain
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), U723MadridSpain
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26
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Emperador S, Garrido-Pérez N, Amezcua-Gil J, Gaudó P, Andrés-Sanz JA, Yubero D, Fernández-Marmiesse A, O'Callaghan MM, Ortigoza-Escobar JD, Iriondo M, Ruiz-Pesini E, García-Cazorla A, Gil-Campos M, Artuch R, Montoya J, Bayona-Bafaluy MP. Molecular Characterization of New FBXL4 Mutations in Patients With mtDNA Depletion Syndrome. Front Genet 2020; 10:1300. [PMID: 31969900 PMCID: PMC6960396 DOI: 10.3389/fgene.2019.01300] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2019] [Accepted: 11/26/2019] [Indexed: 12/17/2022] Open
Abstract
Encephalomyopathic mitochondrial DNA (mtDNA) depletion syndrome 13 (MTDPS13) is a rare genetic disorder caused by defects in F-box leucine-rich repeat protein 4 (FBXL4). Although FBXL4 is essential for the bioenergetic homeostasis of the cell, the precise role of the protein remains unknown. In this study, we report two cases of unrelated patients presenting in the neonatal period with hyperlactacidemia and generalized hypotonia. Severe mtDNA depletion was detected in muscle biopsy in both patients. Genetic analysis showed one patient as having in compound heterozygosis a splice site variant c.858+5G>C and a missense variant c.1510T>C (p.Cys504Arg) in FBXL4. The second patient harbored a frameshift novel variant c.851delC (p.Pro284LeufsTer7) in homozygosis. To validate the pathogenicity of these variants, molecular and biochemical analyses were performed using skin-derived fibroblasts. We observed that the mtDNA depletion was less severe in fibroblasts than in muscle. Interestingly, the cells harboring a nonsense variant in homozygosis showed normal mtDNA copy number. Both patient fibroblasts, however, demonstrated reduced mitochondrial transcript quantity leading to diminished steady state levels of respiratory complex subunits, decreased respiratory complex IV (CIV) activity, and finally, low mitochondrial ATP levels. Both patients also revealed citrate synthase deficiency. Genetic complementation assays established that the deficient phenotype was rescued by the canonical version of FBXL4, confirming the pathological nature of the variants. Further analysis of fibroblasts allowed to establish that increased mitochondrial mass, mitochondrial fragmentation, and augmented autophagy are associated with FBXL4 deficiency in cells, but are probably secondary to a primary metabolic defect affecting oxidative phosphorylation.
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Affiliation(s)
- Sonia Emperador
- Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, Zaragoza, Spain.,Instituto de Investigación Sanitaria de Aragón (IIS-Aragón), Zaragoza, Spain.,Fundación ARAID, Universidad de Zaragoza, Zaragoza, Spain
| | - Nuria Garrido-Pérez
- Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, Zaragoza, Spain.,Instituto de Investigación Sanitaria de Aragón (IIS-Aragón), Zaragoza, Spain.,Fundación ARAID, Universidad de Zaragoza, Zaragoza, Spain
| | - Javier Amezcua-Gil
- Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, Zaragoza, Spain
| | - Paula Gaudó
- Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, Zaragoza, Spain
| | | | - Delia Yubero
- Clinical Biochemistry, Genetics, Pediatric Neurology and Neonatalogy Departments, Institut de Recerca Sant Joan de Déu, Barcelona, Spain.,Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Ana Fernández-Marmiesse
- Genomes&Disease Group, Molecular Medicine and Chronic Diseases Research Centre (CiMUS), Santiago de Compostela University-IDIS, Santiago de Compostela, Spain
| | - Maria M O'Callaghan
- Clinical Biochemistry, Genetics, Pediatric Neurology and Neonatalogy Departments, Institut de Recerca Sant Joan de Déu, Barcelona, Spain.,Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Juan D Ortigoza-Escobar
- Clinical Biochemistry, Genetics, Pediatric Neurology and Neonatalogy Departments, Institut de Recerca Sant Joan de Déu, Barcelona, Spain.,Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Marti Iriondo
- Clinical Biochemistry, Genetics, Pediatric Neurology and Neonatalogy Departments, Institut de Recerca Sant Joan de Déu, Barcelona, Spain.,Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Eduardo Ruiz-Pesini
- Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, Zaragoza, Spain.,Instituto de Investigación Sanitaria de Aragón (IIS-Aragón), Zaragoza, Spain.,Fundación ARAID, Universidad de Zaragoza, Zaragoza, Spain.,Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Angels García-Cazorla
- Clinical Biochemistry, Genetics, Pediatric Neurology and Neonatalogy Departments, Institut de Recerca Sant Joan de Déu, Barcelona, Spain.,Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Mercedes Gil-Campos
- Metabolism Unit, Reina Sofia University Clinical Hospital, Institute Maimónides of Biomedicine Investigation of Córdoba (IMIBIC), University of Córdoba, Córdoba, Spain.,CIBEROBN (Physiopathology of Obesity and Nutrition CB12/03/30038), Madrid, Spain
| | - Rafael Artuch
- Clinical Biochemistry, Genetics, Pediatric Neurology and Neonatalogy Departments, Institut de Recerca Sant Joan de Déu, Barcelona, Spain.,Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - Julio Montoya
- Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, Zaragoza, Spain.,Instituto de Investigación Sanitaria de Aragón (IIS-Aragón), Zaragoza, Spain.,Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), Madrid, Spain
| | - María Pilar Bayona-Bafaluy
- Departamento de Bioquímica, Biología Molecular y Celular, Universidad de Zaragoza, Zaragoza, Spain.,Instituto de Investigación Sanitaria de Aragón (IIS-Aragón), Zaragoza, Spain.,Centro de Investigaciones Biomédicas en Red de Enfermedades Raras (CIBERER), Madrid, Spain
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27
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Gospodaryov DV, Strilbytska OM, Semaniuk UV, Perkhulyn NV, Rovenko BM, Yurkevych IS, Barata AG, Dick TP, Lushchak OV, Jacobs HT. Alternative NADH dehydrogenase extends lifespan and increases resistance to xenobiotics in Drosophila. Biogerontology 2019; 21:155-171. [PMID: 31749111 PMCID: PMC7056681 DOI: 10.1007/s10522-019-09849-8] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2019] [Accepted: 11/11/2019] [Indexed: 01/03/2023]
Abstract
Mitochondrial alternative NADH dehydrogenase (aNDH) was found to extend lifespan when expressed in the fruit fly. We have found that fruit flies expressing aNDH from Ciona intestinalis (NDX) had 17–71% lifespan prolongation on media with different protein-tocarbohydrate ratios except NDX-expressing males that had 19% shorter lifespan than controls on a high protein diet. NDX-expressing flies were more resistant to organic xenobiotics, 2,4-dichlorophenoxyacetic acid and alloxan, and inorganic toxicant potassium iodate, and partially to sodium molybdate treatments. On the other hand, NDX-expressing flies were more sensitive to catechol and sodium chromate. Enzymatic analysis showed that NDX-expressing males had higher glucose 6-phosphate dehydrogenase activity, whilst both sexes showed increased glutathione S-transferase activity.
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Affiliation(s)
- Dmytro V Gospodaryov
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine.
- Department of Biochemistry and Biotechnology, Faculty of Natural Sciences, Vasyl Stefanyk Precarpathian National University, 57 Shevchenko Str, Ivano-Frankivsk, 76018, Ukraine.
| | - Olha M Strilbytska
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Uliana V Semaniuk
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Natalia V Perkhulyn
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Bohdana M Rovenko
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
- Faculty of Biological and Environmental Sciences, and Institute of Biotechnology, University of Helsinki, Helsinki, Finland
| | - Ihor S Yurkevych
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Ana G Barata
- Division of Redox Regulation, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Tobias P Dick
- Division of Redox Regulation, DKFZ-ZMBH Alliance, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Oleh V Lushchak
- Department of Biochemistry and Biotechnology, Vasyl Stefanyk Precarpathian National University, Ivano-Frankivsk, Ukraine
| | - Howard T Jacobs
- Faculty of Medicine and Health Technology, Tampere University, Tampere, Finland
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28
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Infectious stress triggers a POLG-related mitochondrial disease. Neurogenetics 2019; 21:19-27. [PMID: 31655921 DOI: 10.1007/s10048-019-00593-2] [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: 06/03/2019] [Accepted: 09/22/2019] [Indexed: 01/22/2023]
Abstract
A 3-year-old girl presented with severe epilepsy in the context of Borrelia infection. After ceftriaxone/lidocaine administration, she showed secondarily generalized focal crises that led to neurological and motor sequelae. Genetic studies identified in the patient two heterozygous POLG mutations (c.2591A>G; p.Asn864Ser and c.3649G>C; p.Ala1217Pro). Through analysis of POLG activity in cultured fibroblasts, we confirmed that the mutations altered the mtDNA turnover. Moreover, patient fibroblasts were more sensitive than controls in the presence of a mitochondrial replication-affecting drug, the antiretroviral azidothymidine. To test if ceftriaxone treatment could worsen the deleterious effect of the patient mutations, toxicity assays were performed. Cell toxicity, without direct effect on mitochondrial respiratory function, was detected at different antibiotic concentrations. The clinical outcome, together with the different in vitro sensitivity to ceftriaxone among patient and control cells, suggested that the mitochondrial disease symptoms were hastened by the infection and were possibly worsened by the pharmacological treatment. This study underscores the benefit of early genetic diagnosis of the patients with mitochondrial diseases, since they may be a target group of patients especially vulnerable to environmental factors.
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29
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Affiliation(s)
- SeungHye Han
- 1 Department of Medicine Northwestern University Chicago, Illinois
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30
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Alternative NAD(P)H dehydrogenase and alternative oxidase: Proposed physiological roles in animals. Mitochondrion 2019; 45:7-17. [DOI: 10.1016/j.mito.2018.01.009] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2017] [Revised: 11/01/2017] [Accepted: 01/26/2018] [Indexed: 12/12/2022]
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31
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Bajzikova M, Kovarova J, Coelho AR, Boukalova S, Oh S, Rohlenova K, Svec D, Hubackova S, Endaya B, Judasova K, Bezawork-Geleta A, Kluckova K, Chatre L, Zobalova R, Novakova A, Vanova K, Ezrova Z, Maghzal GJ, Magalhaes Novais S, Olsinova M, Krobova L, An YJ, Davidova E, Nahacka Z, Sobol M, Cunha-Oliveira T, Sandoval-Acuña C, Strnad H, Zhang T, Huynh T, Serafim TL, Hozak P, Sardao VA, Koopman WJH, Ricchetti M, Oliveira PJ, Kolar F, Kubista M, Truksa J, Dvorakova-Hortova K, Pacak K, Gurlich R, Stocker R, Zhou Y, Berridge MV, Park S, Dong L, Rohlena J, Neuzil J. Reactivation of Dihydroorotate Dehydrogenase-Driven Pyrimidine Biosynthesis Restores Tumor Growth of Respiration-Deficient Cancer Cells. Cell Metab 2019; 29:399-416.e10. [PMID: 30449682 PMCID: PMC7484595 DOI: 10.1016/j.cmet.2018.10.014] [Citation(s) in RCA: 168] [Impact Index Per Article: 33.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/15/2017] [Revised: 08/04/2018] [Accepted: 10/24/2018] [Indexed: 12/29/2022]
Abstract
Cancer cells without mitochondrial DNA (mtDNA) do not form tumors unless they reconstitute oxidative phosphorylation (OXPHOS) by mitochondria acquired from host stroma. To understand why functional respiration is crucial for tumorigenesis, we used time-resolved analysis of tumor formation by mtDNA-depleted cells and genetic manipulations of OXPHOS. We show that pyrimidine biosynthesis dependent on respiration-linked dihydroorotate dehydrogenase (DHODH) is required to overcome cell-cycle arrest, while mitochondrial ATP generation is dispensable for tumorigenesis. Latent DHODH in mtDNA-deficient cells is fully activated with restoration of complex III/IV activity and coenzyme Q redox-cycling after mitochondrial transfer, or by introduction of an alternative oxidase. Further, deletion of DHODH interferes with tumor formation in cells with fully functional OXPHOS, while disruption of mitochondrial ATP synthase has little effect. Our results show that DHODH-driven pyrimidine biosynthesis is an essential pathway linking respiration to tumorigenesis, pointing to inhibitors of DHODH as potential anti-cancer agents.
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Affiliation(s)
- Martina Bajzikova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Jaromira Kovarova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic.
| | - Ana R Coelho
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Stepana Boukalova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Sehyun Oh
- College of Pharmacy, Natural Product Research Institute, Seoul National University, Seoul 08826, Korea
| | - Katerina Rohlenova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - David Svec
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Sona Hubackova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Berwini Endaya
- School of Medical Science, Griffith University, Southport, QLD 4222, Australia
| | - Kristyna Judasova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | | | - Katarina Kluckova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Laurent Chatre
- Department of Developmental and Stem Cell Biology, Institut Pasteur, 75015 Paris, France; CNRS UMR 3738, Team Stability of Nuclear and Mitochondrial DNA, 75015 Paris, France
| | - Renata Zobalova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Anna Novakova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Katerina Vanova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Zuzana Ezrova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Ghassan J Maghzal
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia; St Vincent's Clinical School, UNSW Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Silvia Magalhaes Novais
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Marie Olsinova
- Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Linda Krobova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Yong Jin An
- College of Pharmacy, Natural Product Research Institute, Seoul National University, Seoul 08826, Korea
| | - Eliska Davidova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Zuzana Nahacka
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Margarita Sobol
- Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Teresa Cunha-Oliveira
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Cristian Sandoval-Acuña
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Hynek Strnad
- Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Tongchuan Zhang
- Institute for Glycomics, Griffith University, Southport, 4222 QLD, Australia
| | - Thanh Huynh
- Eunice Kennedy Shriver Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Teresa L Serafim
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Pavel Hozak
- Institute of Molecular Genetics, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Vilma A Sardao
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Werner J H Koopman
- Department of Biochemistry (286), Radboud Institute for Molecular Life Sciences, Radboud University Medical Centre, 6525 Nijmegen, the Netherlands
| | - Miria Ricchetti
- Department of Developmental and Stem Cell Biology, Institut Pasteur, 75015 Paris, France; CNRS UMR 3738, Team Stability of Nuclear and Mitochondrial DNA, 75015 Paris, France
| | - Paulo J Oliveira
- CNC - Center for Neuroscience and Cell Biology, University of Coimbra, UC-Biotech, Biocant Park, 3060-197 Cantanhede, Portugal
| | - Frantisek Kolar
- Institute of Physiology, Czech Academy of Sciences, 142 20 Prague, Czech Republic
| | - Mikael Kubista
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Jaroslav Truksa
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic
| | - Katerina Dvorakova-Hortova
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; Faculty of Science, Charles University, 128 44 Prague, Czech Republic
| | - Karel Pacak
- Eunice Kennedy Shriver Child Health and Human Development, National Institutes of Health, Bethesda, MD, USA
| | - Robert Gurlich
- Third Faculty Hospital, Charles University, Prague, Czech Republic
| | - Roland Stocker
- Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia; St Vincent's Clinical School, UNSW Medicine, University of New South Wales, Sydney, NSW 2052, Australia
| | - Yaoqi Zhou
- Institute for Glycomics, Griffith University, Southport, 4222 QLD, Australia
| | | | - Sunghyouk Park
- College of Pharmacy, Natural Product Research Institute, Seoul National University, Seoul 08826, Korea.
| | - Lanfeng Dong
- School of Medical Science, Griffith University, Southport, QLD 4222, Australia.
| | - Jakub Rohlena
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic.
| | - Jiri Neuzil
- Institute of Biotechnology, Czech Academy of Sciences, 252 50, Vestec, Prague-West, Czech Republic; School of Medical Science, Griffith University, Southport, QLD 4222, Australia.
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32
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Signes A, Cerutti R, Dickson AS, Benincá C, Hinchy EC, Ghezzi D, Carrozzo R, Bertini E, Murphy MP, Nathan JA, Viscomi C, Fernandez-Vizarra E, Zeviani M. APOPT1/COA8 assists COX assembly and is oppositely regulated by UPS and ROS. EMBO Mol Med 2019; 11:e9582. [PMID: 30552096 PMCID: PMC6328941 DOI: 10.15252/emmm.201809582] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2018] [Revised: 11/20/2018] [Accepted: 11/21/2018] [Indexed: 02/02/2023] Open
Abstract
Loss-of-function mutations in APOPT1, a gene exclusively found in higher eukaryotes, cause a characteristic type of cavitating leukoencephalopathy associated with mitochondrial cytochrome c oxidase (COX) deficiency. Although the genetic association of APOPT1 pathogenic variants with isolated COX defects is now clear, the biochemical link between APOPT1 function and COX has remained elusive. We investigated the molecular role of APOPT1 using different approaches. First, we generated an Apopt1 knockout mouse model which shows impaired motor skills, e.g., decreased motor coordination and endurance, associated with reduced COX activity and levels in multiple tissues. In addition, by achieving stable expression of wild-type APOPT1 in control and patient-derived cultured cells we ruled out a role of this protein in apoptosis and established instead that this protein is necessary for proper COX assembly and function. On the other hand, APOPT1 steady-state levels were shown to be controlled by the ubiquitination-proteasome system (UPS). Conversely, in conditions of increased oxidative stress, APOPT1 is stabilized, increasing its mature intramitochondrial form and thereby protecting COX from oxidatively induced degradation.
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Affiliation(s)
- Alba Signes
- MRC-Mitochondrial Biology Unit, University of Cambridge, Cambridge, UK
| | - Raffaele Cerutti
- MRC-Mitochondrial Biology Unit, University of Cambridge, Cambridge, UK
| | - Anna S Dickson
- Department of Medicine, Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK
| | - Cristiane Benincá
- MRC-Mitochondrial Biology Unit, University of Cambridge, Cambridge, UK
| | | | - Daniele Ghezzi
- Unit of Medical Genetics and Neurogenetics, Fondazione IRCCS Istituto Neurologico "Carlo Besta", Milan, Italy
- Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Rosalba Carrozzo
- Unit of Neuromuscular and Neurodegenerative Disorders, Bambino Gesù Children's Research Hospital, IRCCS, Rome, Italy
| | - Enrico Bertini
- Unit of Neuromuscular and Neurodegenerative Disorders, Bambino Gesù Children's Research Hospital, IRCCS, Rome, Italy
| | - Michael P Murphy
- MRC-Mitochondrial Biology Unit, University of Cambridge, Cambridge, UK
| | - James A Nathan
- Department of Medicine, Cambridge Institute for Medical Research, University of Cambridge, Cambridge, UK
| | - Carlo Viscomi
- MRC-Mitochondrial Biology Unit, University of Cambridge, Cambridge, UK
| | | | - Massimo Zeviani
- MRC-Mitochondrial Biology Unit, University of Cambridge, Cambridge, UK
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33
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Diebold LP, Gil HJ, Gao P, Martinez CA, Weinberg SE, Chandel NS. Mitochondrial complex III is necessary for endothelial cell proliferation during angiogenesis. Nat Metab 2019; 1:158-171. [PMID: 31106291 PMCID: PMC6521885 DOI: 10.1038/s42255-018-0011-x] [Citation(s) in RCA: 131] [Impact Index Per Article: 26.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Endothelial cells (ECs) require glycolysis for proliferation and migration during angiogenesis; however, the necessity for the mitochondrial respiratory chain during angiogenesis is not known. Here we report that inhibition of respiratory chain complex III impairs proliferation, but not migration of ECs in vitro by decreasing the NAD+/NADH ratio. To determine whether mitochondrial respiration is necessary for angiogenesis in vivo, we conditionally ablate a subunit of the respiratory chain complex III (QPC) in ECs. Loss of QPC decreases respiration, resulting in diminished EC proliferation, and impairment in retinal and tumor angiogenesis. Loss of QPC does not decrease genes associated with anabolism or nucleotides levels in ECs, but diminishes amino acid levels. Our findings indicate that mitochondrial respiration is necessary for angiogenesis, and that the primary role of mitochondria in ECs is to serve as biosynthetic organelles for cell proliferation.
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Affiliation(s)
- Lauren P. Diebold
- Departments of Medicine and Robert H. Lurie Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Hyea Jin Gil
- Center for Vascular and Developmental Biology, Feinberg Cardiovascular Research Institute, Northwestern University, Chicago, IL 60611
| | - Peng Gao
- Robert H. Lurie Cancer Center Metabolomics Core, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Carlos A. Martinez
- Department of Biochemistry and Molecular Genetics, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Samuel E. Weinberg
- Departments of Medicine and Robert H. Lurie Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
| | - Navdeep S. Chandel
- Departments of Medicine and Robert H. Lurie Cancer Center, Northwestern University Feinberg School of Medicine, Chicago, IL 60611
- Corresponding author:
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Antos-Krzeminska N, Jarmuszkiewicz W. Alternative Type II NAD(P)H Dehydrogenases in the Mitochondria of Protists and Fungi. Protist 2018; 170:21-37. [PMID: 30553126 DOI: 10.1016/j.protis.2018.11.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2018] [Revised: 10/12/2018] [Accepted: 11/04/2018] [Indexed: 01/11/2023]
Abstract
Plants, fungi, and some protists possess a more branched electron transport chain in their mitochondria compared to canonical one. In these organisms, the electron transport chain contains several rotenone-insensitive NAD(P)H dehydrogenases. Some are located on the outer surface, and others are located on the inner surface of the inner mitochondrial membrane. The putative role of these enzymes still remains elusive, but they may prevent the overreduction of the electron transport chain components and decrease the production of reaction oxygen species as a consequence. The last two decades resulted in the discovery of alternative rotenone-insensitive NAD(P)H dehydrogenases present in representatives of fungi and protozoa. The aim of this review is to gather and focus on current information concerning molecular and functional properties, regulation, and the physiological role of fungal and protozoan alternative NAD(P)H dehydrogenases.
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Affiliation(s)
- Nina Antos-Krzeminska
- Department of Bioenergetics, Adam Mickiewicz University, Umultowska 89, 61-614 Poznan, Poland.
| | - Wieslawa Jarmuszkiewicz
- Department of Bioenergetics, Adam Mickiewicz University, Umultowska 89, 61-614 Poznan, Poland
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35
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Madak JT, Bankhead A, Cuthbertson CR, Showalter HD, Neamati N. Revisiting the role of dihydroorotate dehydrogenase as a therapeutic target for cancer. Pharmacol Ther 2018; 195:111-131. [PMID: 30347213 DOI: 10.1016/j.pharmthera.2018.10.012] [Citation(s) in RCA: 112] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Identified as a hallmark of cancer, metabolic reprogramming allows cancer cells to rapidly proliferate, resist chemotherapies, invade, metastasize, and survive a nutrient-deprived microenvironment. Rapidly growing cells depend on sufficient concentrations of nucleotides to sustain proliferation. One enzyme essential for the de novo biosynthesis of pyrimidine-based nucleotides is dihydroorotate dehydrogenase (DHODH), a known therapeutic target for multiple diseases. Brequinar, leflunomide, and teriflunomide, all of which are potent DHODH inhibitors, have been clinically evaluated but failed to receive FDA approval for the treatment of cancer. Inhibition of DHODH depletes intracellular pyrimidine nucleotide pools and results in cell cycle arrest in S-phase, sensitization to current chemotherapies, and differentiation in neural crest cells and acute myeloid leukemia (AML). Furthermore, DHODH is a synthetic lethal susceptibility in several oncogenic backgrounds. Therefore, DHODH-targeted therapy has potential value as part of a combination therapy for the treatment of cancer. In this review, we focus on the de novo pyrimidine biosynthesis pathway as a target for cancer therapy, and in particular, DHODH. In the first part, we provide a comprehensive overview of this pathway and its regulation in cancer. We further describe the relevance of DHODH as a target for cancer therapy using bioinformatic analyses. We then explore the preclinical and clinical results of pharmacological strategies to target the de novo pyrimidine biosynthesis pathway, with an emphasis on DHODH. Finally, we discuss potential strategies to harness DHODH as a target for the treatment of cancer.
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Affiliation(s)
- Joseph T Madak
- Department of Medicinal Chemistry, University of Michigan College of Pharmacy, Rogel Cancer Center, Ann Arbor, MI 48109, USA
| | - Armand Bankhead
- Department of Biostatistics, University of Michigan School of Public Health, Ann Arbor, MI 48109, USA; Department of Computational Medicine and Bioinformatics, University of Michigan Medical School, Ann Arbor, MI 48109, USA
| | - Christine R Cuthbertson
- Department of Medicinal Chemistry, University of Michigan College of Pharmacy, Rogel Cancer Center, Ann Arbor, MI 48109, USA
| | - Hollis D Showalter
- Department of Medicinal Chemistry, University of Michigan College of Pharmacy, Rogel Cancer Center, Ann Arbor, MI 48109, USA.
| | - Nouri Neamati
- Department of Medicinal Chemistry, University of Michigan College of Pharmacy, Rogel Cancer Center, Ann Arbor, MI 48109, USA.
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36
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Emerging therapies for mitochondrial diseases. Essays Biochem 2018; 62:467-481. [PMID: 29980632 DOI: 10.1042/ebc20170114] [Citation(s) in RCA: 94] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2018] [Revised: 05/20/2018] [Accepted: 05/23/2018] [Indexed: 12/25/2022]
Abstract
For the vast majority of patients with mitochondrial diseases, only supportive and symptomatic therapies are available. However, in the last decade, due to extraordinary advances in defining the causes and pathomechanisms of these diverse disorders, new therapies are being developed in the laboratory and are entering human clinical trials. In this review, we highlight the current use of dietary supplement and exercise therapies as well as emerging therapies that may be broadly applicable across multiple mitochondrial diseases or tailored for specific disorders. Examples of non-tailored therapeutic targets include: activation of mitochondrial biogenesis, regulation of mitophagy and mitochondrial dynamics, bypass of biochemical defects, mitochondrial replacement therapy, and hypoxia. In contrast, tailored therapies are: scavenging of toxic compounds, deoxynucleoside and deoxynucleotide treatments, cell replacement therapies, gene therapy, shifting mitochondrial DNA mutation heteroplasmy, and stabilization of mutant mitochondrial transfer RNAs.
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37
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Pacheu-Grau D, Rucktäschel R, Deckers M. Mitochondrial dysfunction and its role in tissue-specific cellular stress. Cell Stress 2018; 2:184-199. [PMID: 31225486 PMCID: PMC6551628 DOI: 10.15698/cst2018.07.147] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022] Open
Abstract
Mitochondrial bioenergetics require the coordination of two different and independent genomes. Mutations in either genome will affect mitochondrial functionality and produce different sources of cellular stress. Depending on the kind of defect and stress, different tissues and organs will be affected, leading to diverse pathological conditions. There is no curative therapy for mitochondrial diseases, nevertheless, there are strategies described that fight the various stress forms caused by the malfunctioning organelles. Here, we will revise the main kinds of stress generated by mutations in mitochondrial genes and outline several ways of fighting this stress.
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Affiliation(s)
- David Pacheu-Grau
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
| | - Robert Rucktäschel
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
| | - Markus Deckers
- Department of Cellular Biochemistry, University Medical Center Göttingen, Germany
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38
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Toward a therapy for mitochondrial disease. Biochem Soc Trans 2017; 44:1483-1490. [PMID: 27911730 PMCID: PMC5095900 DOI: 10.1042/bst20160085] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2016] [Revised: 06/14/2016] [Accepted: 06/28/2016] [Indexed: 01/08/2023]
Abstract
Mitochondrial disorders are a group of genetic diseases affecting the energy-converting process of oxidative phosphorylation. The extreme variability of symptoms, organ involvement, and clinical course represent a challenge to the development of effective therapeutic interventions. However, new possibilities have recently been emerging from studies in model organisms and awaiting verification in humans. I will discuss here the most promising experimental approaches and the challenges we face to translate them into the clinics. The current clinical trials will also be briefly reviewed.
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39
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MR-1S Interacts with PET100 and PET117 in Module-Based Assembly of Human Cytochrome c Oxidase. Cell Rep 2017; 18:1727-1738. [DOI: 10.1016/j.celrep.2017.01.044] [Citation(s) in RCA: 72] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2016] [Revised: 12/06/2016] [Accepted: 01/19/2017] [Indexed: 01/04/2023] Open
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40
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Bianciardi L, Imperatore V, Fernandez-Vizarra E, Lopomo A, Falabella M, Furini S, Galluzzi P, Grosso S, Zeviani M, Renieri A, Mari F, Frullanti E. Exome sequencing coupled with mRNA analysis identifies NDUFAF6 as a Leigh gene. Mol Genet Metab 2016; 119:214-222. [PMID: 27623250 DOI: 10.1016/j.ymgme.2016.09.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/31/2016] [Accepted: 09/01/2016] [Indexed: 01/30/2023]
Abstract
We report here the case of a young male who started to show verbal fluency disturbance, clumsiness and gait anomalies at the age of 3.5years and presented bilateral striatal necrosis. Clinically, the diagnosis was compatible with Leigh syndrome but the underlying molecular defect remained elusive even after exome analysis using autosomal/X-linked recessive or de novo models. Dosage of respiratory chain activity on fibroblasts, but not in muscle, underlined a deficit in complex I. Re-analysis of heterozygous probably pathogenic variants, inherited from one healthy parent, identified the p.Ala178Pro in NDUFAF6, a complex I assembly factor. RNA analysis showed an almost mono-allelic expression of the mutated allele in blood and fibroblasts and puromycin treatment on cultured fibroblasts did not lead to the rescue of the maternal allele expression, not supporting the involvement of nonsense-mediated RNA decay mechanism. Complementation assay underlined a recovery of complex I activity after transduction of the wild-type gene. Since the second mutation was not detected and promoter methylation analysis resulted normal, we hypothesized a non-exonic event in the maternal allele affecting a regulatory element that, in conjunction with the paternal mutation, leads to the autosomal recessive disorder and the different allele expression in various tissues. This paper confirms NDUFAF6 as a genuine morbid gene and proposes the coupling of exome sequencing with mRNA analysis as a method useful for enhancing the exome sequencing detection rate when the simple application of classical inheritance models fails.
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Affiliation(s)
| | | | | | - Angela Lopomo
- Department of Translational Research and New Technologies in Medicine and Surgery, University of Pisa, Pisa, Italy
| | - Micol Falabella
- Mitochondrial Biology Unit, Medical Research Council Cambridge, Cambridge, UK; Department of Biochemical Sciences, Sapienza University, Rome, Italy
| | - Simone Furini
- Department of Medical Biotechnologies, University of Siena, Siena, Italy
| | - Paolo Galluzzi
- Unit of Diagnostic and Therapeutic Neuroradiology, Department of Neurosciences, Azienda Ospedaliera Universitaria Senese, Siena, Italy
| | | | - Massimo Zeviani
- Mitochondrial Biology Unit, Medical Research Council Cambridge, Cambridge, UK
| | - Alessandra Renieri
- Medical Genetics, University of Siena, Siena, Italy; Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena, Italy.
| | - Francesca Mari
- Medical Genetics, University of Siena, Siena, Italy; Genetica Medica, Azienda Ospedaliera Universitaria Senese, Siena, Italy.
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41
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Mills EL, Kelly B, Logan A, Costa ASH, Varma M, Bryant CE, Tourlomousis P, Däbritz JHM, Gottlieb E, Latorre I, Corr SC, McManus G, Ryan D, Jacobs HT, Szibor M, Xavier RJ, Braun T, Frezza C, Murphy MP, O'Neill LA. Succinate Dehydrogenase Supports Metabolic Repurposing of Mitochondria to Drive Inflammatory Macrophages. Cell 2016; 167:457-470.e13. [PMID: 27667687 PMCID: PMC5863951 DOI: 10.1016/j.cell.2016.08.064] [Citation(s) in RCA: 1314] [Impact Index Per Article: 164.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2016] [Revised: 07/20/2016] [Accepted: 08/25/2016] [Indexed: 12/13/2022]
Abstract
Activated macrophages undergo metabolic reprogramming, which drives their pro-inflammatory phenotype, but the mechanistic basis for this remains obscure. Here, we demonstrate that upon lipopolysaccharide (LPS) stimulation, macrophages shift from producing ATP by oxidative phosphorylation to glycolysis while also increasing succinate levels. We show that increased mitochondrial oxidation of succinate via succinate dehydrogenase (SDH) and an elevation of mitochondrial membrane potential combine to drive mitochondrial reactive oxygen species (ROS) production. RNA sequencing reveals that this combination induces a pro-inflammatory gene expression profile, while an inhibitor of succinate oxidation, dimethyl malonate (DMM), promotes an anti-inflammatory outcome. Blocking ROS production with rotenone by uncoupling mitochondria or by expressing the alternative oxidase (AOX) inhibits this inflammatory phenotype, with AOX protecting mice from LPS lethality. The metabolic alterations that occur upon activation of macrophages therefore repurpose mitochondria from ATP synthesis to ROS production in order to promote a pro-inflammatory state.
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Affiliation(s)
- Evanna L Mills
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Beth Kelly
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Angela Logan
- MRC Mitochondrial Biology Unit, Hills Road, Cambridge CB2 0XY, UK
| | - Ana S H Costa
- MRC Cancer Unit, University of Cambridge, Hutchison/MRC Research Centre, Box 197, Cambridge Biomedical Campus, Cambridge CB2 0XZ, UK
| | - Mukund Varma
- Center for Computational and Integrative Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Clare E Bryant
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB23 8AQ, UK
| | - Panagiotis Tourlomousis
- Department of Veterinary Medicine, University of Cambridge, Madingley Road, Cambridge CB23 8AQ, UK
| | - J Henry M Däbritz
- Cancer Metabolism Research Unit, Cancer Research UK, Beatson Institute, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK
| | - Eyal Gottlieb
- Cancer Metabolism Research Unit, Cancer Research UK, Beatson Institute, Garscube Estate, Switchback Road, Bearsden, Glasgow G61 1BD, UK
| | - Isabel Latorre
- Center for Computational and Integrative Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Sinéad C Corr
- Department of Microbiology, Moyne Institute for Preventative Medicine, School of Genetics and Microbiology, Trinity College Dublin, Dublin 2, Ireland
| | - Gavin McManus
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Dylan Ryan
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland
| | - Howard T Jacobs
- Institute of Biotechnology, 00014 University of Helsinki, P.O. Box 56, Helsinki 00014, Finland; BioMediTech and Tampere University Hospital, University of Tampere, Tampere 33014, Finland
| | - Marten Szibor
- Institute of Biotechnology, 00014 University of Helsinki, P.O. Box 56, Helsinki 00014, Finland; BioMediTech and Tampere University Hospital, University of Tampere, Tampere 33014, Finland; Max-Planck-Institute for Heart and Lung Research, Ludwigstrasse 43, 61231 Bad Nauheim, Germany
| | - Ramnik J Xavier
- Center for Computational and Integrative Biology, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA; Gastrointestinal Unit, Center for the Study of Inflammatory Bowel Disease, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA
| | - Thomas Braun
- Max-Planck-Institute for Heart and Lung Research, Ludwigstrasse 43, 61231 Bad Nauheim, Germany
| | - Christian Frezza
- MRC Cancer Unit, University of Cambridge, Hutchison/MRC Research Centre, Box 197, Cambridge Biomedical Campus, Cambridge CB2 0XZ, UK
| | - Michael P Murphy
- MRC Mitochondrial Biology Unit, Hills Road, Cambridge CB2 0XY, UK.
| | - Luke A O'Neill
- School of Biochemistry and Immunology, Trinity Biomedical Sciences Institute, Trinity College Dublin, Dublin 2, Ireland.
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42
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Guarás A, Perales-Clemente E, Calvo E, Acín-Pérez R, Loureiro-Lopez M, Pujol C, Martínez-Carrascoso I, Nuñez E, García-Marqués F, Rodríguez-Hernández MA, Cortés A, Diaz F, Pérez-Martos A, Moraes CT, Fernández-Silva P, Trifunovic A, Navas P, Vazquez J, Enríquez JA. The CoQH2/CoQ Ratio Serves as a Sensor of Respiratory Chain Efficiency. Cell Rep 2016; 15:197-209. [PMID: 27052170 DOI: 10.1016/j.celrep.2016.03.009] [Citation(s) in RCA: 189] [Impact Index Per Article: 23.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2015] [Revised: 02/03/2016] [Accepted: 02/27/2016] [Indexed: 02/01/2023] Open
Abstract
Electrons feed into the mitochondrial electron transport chain (mETC) from NAD- or FAD-dependent enzymes. A shift from glucose to fatty acids increases electron flux through FAD, which can saturate the oxidation capacity of the dedicated coenzyme Q (CoQ) pool and result in the generation of reactive oxygen species. To prevent this, the mETC superstructure can be reconfigured through the degradation of respiratory complex I, liberating associated complex III to increase electron flux via FAD at the expense of NAD. Here, we demonstrate that this adaptation is driven by the ratio of reduced to oxidized CoQ. Saturation of CoQ oxidation capacity induces reverse electron transport from reduced CoQ to complex I, and the resulting local generation of superoxide oxidizes specific complex I proteins, triggering their degradation and the disintegration of the complex. Thus, CoQ redox status acts as a metabolic sensor that fine-tunes mETC configuration in order to match the prevailing substrate profile.
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Affiliation(s)
- Adela Guarás
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Ester Perales-Clemente
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Enrique Calvo
- Laboratorio de Proteómica Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Rebeca Acín-Pérez
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Marta Loureiro-Lopez
- Laboratorio de Proteómica Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Claire Pujol
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany; Institute for Mitochondrial Diseases and Aging, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Isabel Martínez-Carrascoso
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Estefanía Nuñez
- Laboratorio de Proteómica Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Fernando García-Marqués
- Laboratorio de Proteómica Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - María Angeles Rodríguez-Hernández
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC, Sevilla 41013, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras, ISCIII, Sevilla 41013, Spain
| | - Ana Cortés
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC, Sevilla 41013, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras, ISCIII, Sevilla 41013, Spain
| | - Francisca Diaz
- Department of Neurology, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
| | - Acisclo Pérez-Martos
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Carlos T Moraes
- Department of Neurology, Miller School of Medicine, University of Miami, Miami, FL 33136, USA; Department of Cell Biology and Anatomy, Miller School of Medicine, University of Miami, Miami, FL 33136, USA
| | - Patricio Fernández-Silva
- Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, Zaragoza 50009, Spain
| | - Aleksandra Trifunovic
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), University of Cologne, 50931 Cologne, Germany; Institute for Mitochondrial Diseases and Aging, Medical Faculty, University of Cologne, 50931 Cologne, Germany
| | - Plácido Navas
- Centro Andaluz de Biología del Desarrollo, Universidad Pablo de Olavide-CSIC, Sevilla 41013, Spain; Centro de Investigación Biomédica en Red de Enfermedades Raras, ISCIII, Sevilla 41013, Spain
| | - Jesús Vazquez
- Laboratorio de Proteómica Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain
| | - Jose A Enríquez
- Departamento de Desarrollo y Reparación Cardiovascular, Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid 28029, Spain; Departamento de Bioquímica y Biología Molecular y Celular, Facultad de Ciencias, Universidad de Zaragoza, Zaragoza 50009, Spain.
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43
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Rogov AG, Zvyagilskaya RA. Physiological role of alternative oxidase (from yeasts to plants). BIOCHEMISTRY (MOSCOW) 2016; 80:400-7. [PMID: 25869356 DOI: 10.1134/s0006297915040021] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Mitochondria of all so far studied organisms, with the exception of Archaea, mammals, some yeasts, and protists, contain, along with the classical phosphorylating cytochrome pathway, a so-called cyanide-insensitive alternative oxidase (AOX) localized on the matrix side of the mitochondrial inner membrane, and electron transport through which is not coupled with ATP synthesis and energy accumulation. Mechanisms underlying plentiful functions of AOX in organisms at various levels of organization ranging from yeasts to plants are considered. First and foremost, AOX provides a chance of cell survival after inhibiting the terminal components of the main respiratory chain or losing the ability to synthesize these components. The vitally important role of AOX is obvious in thermogenesis of thermogenic plant organs where it becomes the only terminal oxidase with a very high activity, and the energy of substrate oxidation by this respiratory pathway is converted into heat, thus promoting evaporation of volatile substances attracting pollinating insects. AOX plays a fundamentally significant role in alleviating or preventing oxidative stress, thus ensuring the defense against a wide range of stresses and adverse environmental conditions, such as changes in temperature and light intensities, osmotic stress, drought, and attack by incompatible strains of bacterial pathogens, phytopathogens, or their elicitors. Participation of AOX in pathogen survival during its existence inside the host, in antivirus defense, as well as in metabolic rearrangements in plants during embryogenesis and cell differentiation is described. Examples are given to demonstrate that AOX might be an important tool to overcome the adverse aftereffects of restricted activity of the main respiratory chain in cells and whole animals.
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Affiliation(s)
- A G Rogov
- Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow, 119071, Russia.
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44
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Martínez-Reyes I, Diebold LP, Kong H, Schieber M, Huang H, Hensley CT, Mehta MM, Wang T, Santos JH, Woychik R, Dufour E, Spelbrink JN, Weinberg SE, Zhao Y, DeBerardinis RJ, Chandel NS. TCA Cycle and Mitochondrial Membrane Potential Are Necessary for Diverse Biological Functions. Mol Cell 2015; 61:199-209. [PMID: 26725009 DOI: 10.1016/j.molcel.2015.12.002] [Citation(s) in RCA: 349] [Impact Index Per Article: 38.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/15/2015] [Revised: 10/19/2015] [Accepted: 11/17/2015] [Indexed: 12/24/2022]
Abstract
Mitochondrial metabolism is necessary for the maintenance of oxidative TCA cycle function and mitochondrial membrane potential. Previous attempts to decipher whether mitochondria are necessary for biological outcomes have been hampered by genetic and pharmacologic methods that simultaneously disrupt multiple functions linked to mitochondrial metabolism. Here, we report that inducible depletion of mitochondrial DNA (ρ(ο) cells) diminished respiration, oxidative TCA cycle function, and the mitochondrial membrane potential, resulting in diminished cell proliferation, hypoxic activation of HIF-1, and specific histone acetylation marks. Genetic reconstitution only of the oxidative TCA cycle function specifically in these inducible ρ(ο) cells restored metabolites, resulting in re-establishment of histone acetylation. In contrast, genetic reconstitution of the mitochondrial membrane potential restored ROS, which were necessary for hypoxic activation of HIF-1 and cell proliferation. These results indicate that distinct mitochondrial functions associated with respiration are necessary for cell proliferation, epigenetics, and HIF-1 activation.
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Affiliation(s)
| | - Lauren P Diebold
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Hyewon Kong
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Michael Schieber
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - He Huang
- Ben May Department of Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Christopher T Hensley
- Children Medical Center Research Institute, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Manan M Mehta
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Tianyuan Wang
- Division of Extramural Research and Training, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, NC 27709, USA
| | - Janine H Santos
- Division of Extramural Research and Training, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, NC 27709, USA
| | - Richard Woychik
- Division of Extramural Research and Training, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, NC 27709, USA
| | - Eric Dufour
- BioMediTech and Tampere University Hospital, University of Tampere, Biokatu 8, 33520 Tampere, Finland
| | - Johannes N Spelbrink
- Department of Pediatrics, Nijmegen Center for Mitochondrial Disorders, Radboud University Medical Centre, Geert Grooteplein 10, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - Samuel E Weinberg
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Yingming Zhao
- Ben May Department of Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Ralph J DeBerardinis
- Children Medical Center Research Institute, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Navdeep S Chandel
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
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45
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Rogov AG, Sukhanova EI, Uralskaya LA, Aliverdieva DA, Zvyagilskaya RA. Alternative oxidase: distribution, induction, properties, structure, regulation, and functions. BIOCHEMISTRY (MOSCOW) 2015; 79:1615-34. [PMID: 25749168 DOI: 10.1134/s0006297914130112] [Citation(s) in RCA: 38] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
The respiratory chain in the majority of organisms with aerobic type metabolism features the concomitant existence of the phosphorylating cytochrome pathway and the cyanide- and antimycin A-insensitive oxidative route comprising a so-called alternative oxidase (AOX) as a terminal oxidase. In this review, the history of AOX discovery is described. Considerable evidence is presented that AOX occurs widely in organisms at various levels of organization and is not confined to the plant kingdom. This enzyme has not been found only in Archaea, mammals, some yeasts and protists. Bioinformatics research revealed the sequences characteristic of AOX in representatives of various taxonomic groups. Based on multiple alignments of these sequences, a phylogenetic tree was constructed to infer their possible evolution. The ways of AOX activation, as well as regulatory interactions between AOX and the main respiratory chain are described. Data are summarized concerning the properties of AOX and the AOX-encoding genes whose expression is either constitutive or induced by various factors. Information is presented on the structure of AOX, its active center, and the ubiquinone-binding site. The principal functions of AOX are analyzed, including the cases of cell survival, optimization of respiratory metabolism, protection against excess of reactive oxygen species, and adaptation to variable nutrition sources and to biotic and abiotic stress factors. It is emphasized that different AOX functions complement each other in many instances and are not mutually exclusive. Examples are given to demonstrate that AOX is an important tool to overcome the adverse aftereffects of restricted activity of the main respiratory chain in cells and whole animals. This is the first comprehensive review on alternative oxidases of various organisms ranging from yeasts and protists to vascular plants.
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Affiliation(s)
- A G Rogov
- Bach Institute of Biochemistry, Russian Academy of Sciences, Moscow, 119071, Russia.
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Matus-Ortega MG, Cárdenas-Monroy CA, Flores-Herrera O, Mendoza-Hernández G, Miranda M, González-Pedrajo B, Vázquez-Meza H, Pardo JP. New complexes containing the internal alternative NADH dehydrogenase (Ndi1) in mitochondria of Saccharomyces cerevisiae. Yeast 2015; 32:629-41. [PMID: 26173916 DOI: 10.1002/yea.3086] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2015] [Revised: 06/27/2015] [Accepted: 06/27/2015] [Indexed: 11/07/2022] Open
Abstract
Mitochondria of Saccharomyces cerevisiae lack the respiratory complex I, but contain three rotenone-insensitive NADH dehydrogenases distributed on both the external (Nde1 and Nde2) and internal (Ndi1) surfaces of the inner mitochondrial membrane. These enzymes catalyse the transfer of electrons from NADH to ubiquinone without the translocation of protons across the membrane. Due to the high resolution of the Blue Native PAGE (BN-PAGE) technique combined with digitonin solubilization, several bands with NADH dehydrogenase activity were observed on the gel. The use of specific S. cerevisiae single and double mutants of the external alternative elements (ΔNDE1, ΔNDE2, ΔNDE1/ΔNDE2) showed that the high and low molecular weight complexes contained the Ndi1. Some of the Ndi1 associations took place with complexes III and IV, suggesting the formation of respirasome-like structures. Complex II interacted with other proteins to form a high molecular weight supercomplex with a molecular mass around 600 kDa. We also found that the majority of the Ndi1 was in a dimeric form, which is in agreement with the recently reported three-dimensional structure of the protein.
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Affiliation(s)
- M G Matus-Ortega
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Coyoacán 04510, México, D. F., México
| | - C A Cárdenas-Monroy
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Coyoacán 04510, México, D. F., México
| | - O Flores-Herrera
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Coyoacán 04510, México, D. F., México
| | - G Mendoza-Hernández
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Coyoacán 04510, México, D. F., México
| | - M Miranda
- Department of Biological Sciences, University of Texas, El Paso, TX, USA
| | - B González-Pedrajo
- Departamento de Genética Molecular, Instituto de Fisiología Celular, Universidad Nacional Autónoma de México, Coyoacán 04510, México, D. F., México
| | - H Vázquez-Meza
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Coyoacán 04510, México, D. F., México
| | - J P Pardo
- Departamento de Bioquímica, Facultad de Medicina, Universidad Nacional Autónoma de México, Coyoacán 04510, México, D. F., México
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Viscomi C, Bottani E, Zeviani M. Emerging concepts in the therapy of mitochondrial disease. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2015; 1847:544-57. [PMID: 25766847 DOI: 10.1016/j.bbabio.2015.03.001] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2014] [Revised: 02/15/2015] [Accepted: 03/02/2015] [Indexed: 01/07/2023]
Abstract
Mitochondrial disorders are an important group of genetic conditions characterized by impaired oxidative phosphorylation. Mitochondrial disorders come with an impressive variability of symptoms, organ involvement, and clinical course, which considerably impact the quality of life and quite often shorten the lifespan expectancy. Although the last 20 years have witnessed an exponential increase in understanding the genetic and biochemical mechanisms leading to disease, this has not resulted in the development of effective therapeutic approaches, amenable of improving clinical course and outcome of these conditions to any significant extent. Therapeutic options for mitochondrial diseases still remain focused on supportive interventions aimed at relieving complications. However, new therapeutic strategies have recently been emerging, some of which have shown potential efficacy at the pre-clinical level. This review will present the state of the art on experimental therapy for mitochondrial disorders.
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Affiliation(s)
- Carlo Viscomi
- Unit of Molecular Neurogenetics, The Foundation "Carlo Besta" Institute of Neurology IRCCS, 20133 Milan, Italy; MRC-Mitochondrial Biology Unit, Cambridge CB2 0XY, UK.
| | | | - Massimo Zeviani
- Unit of Molecular Neurogenetics, The Foundation "Carlo Besta" Institute of Neurology IRCCS, 20133 Milan, Italy; MRC-Mitochondrial Biology Unit, Cambridge CB2 0XY, UK.
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Singh HR, Ladurner AG, Kong H, Schieber M, Huang H, Hensley CT, Mehta MM, Wang T, Santos JH, Woychik R, Dufour E, Spelbrink JN, Weinberg SE, Zhao Y, DeBerardinis RJ, Chandel NS. ACF takes the driver's seat. Mol Cell 2014. [PMID: 25105485 DOI: 10.1016/j.molcel] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
ISWI family chromatin remodeling enzymes generate regularly spaced nucleosome arrays. In a recent Nature report, Hwang et al. (2014) describe how ACF gauges the length of linker DNA when deciding to accelerate nucleosome sliding or to put on the brakes.
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Affiliation(s)
- Hari R Singh
- Department of Physiological Chemistry, Butenandt Institute and LMU Biomedical Center, Ludwig-Maximilians-University of Munich, Butenandtstrasse 5, 81377 Munich, Germany
| | - Andreas G Ladurner
- Department of Physiological Chemistry, Butenandt Institute and LMU Biomedical Center, Ludwig-Maximilians-University of Munich, Butenandtstrasse 5, 81377 Munich, Germany; International Max Planck Research School for Molecular and Cellular Life Sciences, Am Klopferspitz 18, 82152 Martinsried, Germany; Center for Integrated Protein Science Munich (CIPSM), 81377 Munich, Germany; Munich Cluster for Systems Neurology (SyNergy), 80336 Munich, Germany.
| | - Hyewon Kong
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Michael Schieber
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - He Huang
- Ben May Department of Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Christopher T Hensley
- Children Medical Center Research Institute, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Manan M Mehta
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Tianyuan Wang
- Division of Extramural Research and Training, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, NC 27709, USA
| | - Janine H Santos
- Division of Extramural Research and Training, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, NC 27709, USA
| | - Richard Woychik
- Division of Extramural Research and Training, National Institute of Environmental Health Sciences (NIEHS), National Institutes of Health (NIH), Department of Health and Human Services (DHHS), Research Triangle Park, NC 27709, USA
| | - Eric Dufour
- BioMediTech and Tampere University Hospital, University of Tampere, Biokatu 8, 33520 Tampere, Finland
| | - Johannes N Spelbrink
- Department of Pediatrics, Nijmegen Center for Mitochondrial Disorders, Radboud University Medical Centre, Geert Grooteplein 10, P.O. Box 9101, 6500 HB, Nijmegen, The Netherlands
| | - Samuel E Weinberg
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA
| | - Yingming Zhao
- Ben May Department of Cancer Research, The University of Chicago, Chicago, IL 60637, USA
| | - Ralph J DeBerardinis
- Children Medical Center Research Institute, University of Texas Southwestern Medical Center, 5323 Harry Hines Boulevard, Dallas, TX 75390, USA
| | - Navdeep S Chandel
- Department of Medicine, Northwestern University Feinberg School of Medicine, Chicago, IL 60611, USA.
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Enriquez JA, Lenaz G. Coenzyme q and the respiratory chain: coenzyme q pool and mitochondrial supercomplexes. Mol Syndromol 2014; 5:119-40. [PMID: 25126045 DOI: 10.1159/000363364] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
Two alternative models of organization of the mitochondrial electron transport chain (mETC) have been alternatively favored or questioned by the accumulation evidences of different sources, the solid model or the random collision model. Both agree in the number of respiratory complexes (I-IV) that participate in the mETC, but while the random collision model proposes that Complexes I-IV do not interact physically and that electrons are transferred between them by coenzyme Q and cytochrome c, the solid model proposes that all complexes super-assemble in the so-called respirasome. Recently, the plasticity model has been developed to incorporate the solid and the random collision model as extreme situations of a dynamic organization, allowing super-assembly free movement of the respiratory complexes. In this review, we evaluate the supporting evidences of each model and the implications of the super-assembly in the physiological role of coenzyme Q.
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Affiliation(s)
| | - Giorgio Lenaz
- Dipartimento di Scienze Biomediche e Neuromotorie, Università di Bologna, Bologna, Italy
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Engineering plant alternative oxidase function in mammalian cells: substitution of the motif-like sequence ENV for QDT diminishes catalytic activity of Arum concinnatum AOX1a expressed in HeLa cells. Appl Biochem Biotechnol 2013; 170:1229-40. [PMID: 23653140 DOI: 10.1007/s12010-013-0235-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2012] [Accepted: 04/09/2013] [Indexed: 10/26/2022]
Abstract
Alternative oxidase (AOX) is a nonproton motive quinol-oxygen oxidoreductase which is a component of the mitochondrial respiratory chain in higher plants. In this study, we have characterized the catalytic activity and regulatory behaviors of Arum concinnatum AOX isoforms, namely AcoAOX1a and AcoAOX1b, and their artificial mutants in HeLa cells. We demonstrated that substitution of the motif-like sequence ENV on the C-terminal half of AcoAOX1a for QDT diminishes its activity and proposed that the innate inactivity of AcoAOX1b in HeLa cells is, at least in part, attributable to its QDT motif. Furthermore, we show that introduction of F130L in the hydrophilic N-terminal extension of AcoAOX1a resulted in greater activity in the presence of pyruvate. This result indicates that functional significance of the N-terminal extension is not particular to the conventional regulatory cysteine. On the basis of these findings, we discuss new insights into the structural integrity of AOX in HeLa cells and the applicability of mammalian cells for functional analysis of this enzyme.
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