1
|
Qiu J, Gu Y. Analysis of the prognostic value of mitochondria-related genes in patients with acute myocardial infarction. BMC Cardiovasc Disord 2024; 24:408. [PMID: 39103773 DOI: 10.1186/s12872-024-04051-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Accepted: 07/15/2024] [Indexed: 08/07/2024] Open
Abstract
BACKGROUND Acute myocardial infarction (AMI) is a leading cause of death worldwide. Mitochondrial dysfunction is a key determinant of cell death post-AMI. Preventing mitochondrial dysfunction is thus a key therapeutic strategy. This study aimed to explore key genes and target compounds related to mitochondrial dysfunction in AMI patients and their association with major adverse cardiovascular events (MACE). METHODS Differentially expressed genes in AMI were identified from the Gene Expression Omnibus (GEO) datasets (GSE166780 and GSE24519), and mitochondria-related genes were obtained from MitoCarta3.0 database. By intersection of the two gene groups, mitochondria-related genes in AMI were identified. Next, the identified genes related to mitochondria were subject to Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) functional enrichment analyses. Protein-protein interaction (PPI) network was constructed, and key genes were screened. Then, targeted drug screening and molecular docking were performed. Blood samples from AMI patients and healthy volunteers were analyzed for the key genes expressions using quantitative real time polymerase chain reaction (qRT-PCR). Later, receiver operating characteristic (ROC) curves assessed the diagnostic value of key genes, and univariate and multivariate COX analyses identified risk factors and protective factors for MACE in AMI patients. RESULTS After screening and identification, 138 mitochondria-related genes were identified, mainly enriched in the processes and pathways of cellular respiration, redox, mitochondrial metabolism, apoptosis, amino acid and fatty acid metabolism. According to the PPI network, 5 key mitochondria-related genes in AMI were obtained: translational activator of cytochrome c oxidase I (TACO1), cytochrome c oxidase subunit Va (COX5A), PTEN-induced putative kinase 1 (PINK1), SURF1, and NDUFA11. Molecular docking showed that Cholic Acid, N-Formylmethionine interacted with COX5A, nicotinamide adenine dinucleotide + hydrogen (NADH) and NDUFA11. Subsequent basic experiments revealed that COX5A and NDUFA11 expressions were significantly lower in the blood of patients with AMI than those in the corresponding healthy volunteers; also, AMI patients with MACE had lower COX5A and NDUFA11 expressions in the blood than those without MACE (P < 0.01). ROC analysis also showed high diagnostic value for COX5A and NDUFA11 [area under the curve (AUC) > 0.85]. In terms of COX results, COX5A, NDUFA11 and left ventricular ejection fraction (LVEF) were protective factors for MACE in AMI, while C-reactive protein (CRP) was a risk factor. CONCLUSION COX5A and NDUFA11, key mitochondria-related genes in AMI, may be used as biomarkers to diagnose AMI and predict MACE.
Collapse
Affiliation(s)
- Jun Qiu
- Department of Emergency Medicine, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China
| | - Yiyang Gu
- Staff Health Center, Affiliated Hospital of Nantong University, Nantong, 226001, Jiangsu, China.
| |
Collapse
|
2
|
Brischigliaro M, Krüger A, Moran JC, Antonicka H, Ahn A, Shoubridge EA, Rorbach J, Barrientos A. The human mitochondrial translation factor TACO1 alleviates mitoribosome stalling at polyproline stretches. Nucleic Acids Res 2024:gkae645. [PMID: 39036954 DOI: 10.1093/nar/gkae645] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2024] [Revised: 07/04/2024] [Accepted: 07/09/2024] [Indexed: 07/23/2024] Open
Abstract
The prokaryotic translation elongation factor P (EF-P) and the eukaryotic/archaeal counterparts eIF5A/aIF5A are proteins that serve a crucial role in mitigating ribosomal stalling during the translation of specific sequences, notably those containing consecutive proline residues (1,2). Although mitochondrial DNA-encoded proteins synthesized by mitochondrial ribosomes also contain polyproline stretches, an EF-P/eIF5A mitochondrial counterpart remains unidentified. Here, we show that the missing factor is TACO1, a protein causative of a juvenile form of neurodegenerative Leigh's syndrome associated with cytochrome c oxidase deficiency, until now believed to be a translational activator of COX1 mRNA. By using a combination of metabolic labeling, puromycin release and mitoribosome profiling experiments, we show that TACO1 is required for the rapid synthesis of the polyproline-rich COX1 and COX3 cytochrome c oxidase subunits, while its requirement is negligible for other mitochondrial DNA-encoded proteins. In agreement with a role in translation efficiency regulation, we show that TACO1 cooperates with the N-terminal extension of the large ribosomal subunit bL27m to provide stability to the peptidyl-transferase center during elongation. This study illuminates the translation elongation dynamics within human mitochondria, a TACO1-mediated biological mechanism in place to mitigate mitoribosome stalling at polyproline stretches during protein synthesis, and the pathological implications of its malfunction.
Collapse
Affiliation(s)
- Michele Brischigliaro
- Department of Neurology, University of Miami Miller School of Medicine, 1600 NW 10th Ave., Miami, FL 33136, USA
| | - Annika Krüger
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
- Max Planck Institute Biology of Ageing-Karolinska Institutet Laboratory, Karolinska Institutet, Stockholm, Sweden
| | - J Conor Moran
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, 1600 NW 10th Ave., Miami, FL 33136, USA
- The University of Miami Medical Scientist Training Program (MSTP), 1600 NW 10th Ave.,Miami, FL33136, USA
| | - Hana Antonicka
- The Neuro and Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Ahram Ahn
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, 1600 NW 10th Ave., Miami, FL 33136, USA
| | - Eric A Shoubridge
- The Neuro and Department of Human Genetics, McGill University, Montreal, QC, Canada
| | - Joanna Rorbach
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
- Max Planck Institute Biology of Ageing-Karolinska Institutet Laboratory, Karolinska Institutet, Stockholm, Sweden
| | - Antoni Barrientos
- Department of Neurology, University of Miami Miller School of Medicine, 1600 NW 10th Ave., Miami, FL 33136, USA
- Department of Biochemistry and Molecular Biology, University of Miami Miller School of Medicine, 1600 NW 10th Ave., Miami, FL 33136, USA
- The Miami Veterans Affairs (VA) Medical System. 1201 NW 16th St, Miami, FL-33125, USA
| |
Collapse
|
3
|
Antolínez-Fernández Á, Esteban-Ramos P, Fernández-Moreno MÁ, Clemente P. Molecular pathways in mitochondrial disorders due to a defective mitochondrial protein synthesis. Front Cell Dev Biol 2024; 12:1410245. [PMID: 38855161 PMCID: PMC11157125 DOI: 10.3389/fcell.2024.1410245] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2024] [Accepted: 05/09/2024] [Indexed: 06/11/2024] Open
Abstract
Mitochondria play a central role in cellular metabolism producing the necessary ATP through oxidative phosphorylation. As a remnant of their prokaryotic past, mitochondria contain their own genome, which encodes 13 subunits of the oxidative phosphorylation system, as well as the tRNAs and rRNAs necessary for their translation in the organelle. Mitochondrial protein synthesis depends on the import of a vast array of nuclear-encoded proteins including the mitochondrial ribosome protein components, translation factors, aminoacyl-tRNA synthetases or assembly factors among others. Cryo-EM studies have improved our understanding of the composition of the mitochondrial ribosome and the factors required for mitochondrial protein synthesis and the advances in next-generation sequencing techniques have allowed for the identification of a growing number of genes involved in mitochondrial pathologies with a defective translation. These disorders are often multisystemic, affecting those tissues with a higher energy demand, and often present with neurodegenerative phenotypes. In this article, we review the known proteins required for mitochondrial translation, the disorders that derive from a defective mitochondrial protein synthesis and the animal models that have been established for their study.
Collapse
Affiliation(s)
- Álvaro Antolínez-Fernández
- Instituto de Investigaciones Biomédicas Sols-Morreale (IIBM), Universidad Autónoma de Madrid-Consejo Superior de Investigaciones Científicas, Madrid, Spain
- Departamento de Bioquímica, Universidad Autónoma de Madrid, Madrid, Spain
| | - Paula Esteban-Ramos
- Instituto de Investigaciones Biomédicas Sols-Morreale (IIBM), Universidad Autónoma de Madrid-Consejo Superior de Investigaciones Científicas, Madrid, Spain
- Departamento de Bioquímica, Universidad Autónoma de Madrid, Madrid, Spain
| | - Miguel Ángel Fernández-Moreno
- Instituto de Investigaciones Biomédicas Sols-Morreale (IIBM), Universidad Autónoma de Madrid-Consejo Superior de Investigaciones Científicas, Madrid, Spain
- Departamento de Bioquímica, Universidad Autónoma de Madrid, Madrid, Spain
| | - Paula Clemente
- Instituto de Investigaciones Biomédicas Sols-Morreale (IIBM), Universidad Autónoma de Madrid-Consejo Superior de Investigaciones Científicas, Madrid, Spain
- Departamento de Bioquímica, Universidad Autónoma de Madrid, Madrid, Spain
| |
Collapse
|
4
|
Kremer LS, Rehling P. Coordinating mitochondrial translation with assembly of the OXPHOS complexes. Hum Mol Genet 2024; 33:R47-R52. [PMID: 38779773 PMCID: PMC11112383 DOI: 10.1093/hmg/ddae025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 01/31/2024] [Accepted: 02/09/2024] [Indexed: 05/25/2024] Open
Abstract
The mitochondrial oxidative phosphorylation (OXPHOS) system produces the majority of energy required by cells. Given the mitochondrion's endosymbiotic origin, the OXPHOS machinery is still under dual genetic control where most OXPHOS subunits are encoded by the nuclear DNA and imported into mitochondria, while a small subset is encoded on the mitochondrion's own genome, the mitochondrial DNA (mtDNA). The nuclear and mtDNA encoded subunits must be expressed and assembled in a highly orchestrated fashion to form a functional OXPHOS system and meanwhile prevent the generation of any harmful assembly intermediates. While several mechanisms have evolved in eukaryotes to achieve such a coordinated expression, this review will focus on how the translation of mtDNA encoded OXPHOS subunits is tailored to OXPHOS assembly.
Collapse
Affiliation(s)
- Laura S Kremer
- Department of Cellular Biochemistry, University Medical Center Göttingen, Humboldtallee 23, Göttingen 37073, Germany
| | - Peter Rehling
- Department of Cellular Biochemistry, University Medical Center Göttingen, Humboldtallee 23, Göttingen 37073, Germany
- Cluster of Excellence “Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells” (MBExC), University of Göttingen, Robert-Koch-Str. 40, Göttingen 37075, Germany
- Fraunhofer Institute for Translational Medicine and Pharmacology, Translational Neuroinflammation and Automated Microscopy, Robert-Koch-Str. 40, Göttingen 37075, Germany
- Max Planck Institute for Multidisciplinary Science, Am Faßberg 11, Göttingen 37077, Germany
| |
Collapse
|
5
|
Hughes LA, Rackham O, Filipovska A. Illuminating mitochondrial translation through mouse models. Hum Mol Genet 2024; 33:R61-R79. [PMID: 38779771 PMCID: PMC11112386 DOI: 10.1093/hmg/ddae020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2023] [Revised: 01/22/2024] [Accepted: 01/31/2024] [Indexed: 05/25/2024] Open
Abstract
Mitochondria are hubs of metabolic activity with a major role in ATP conversion by oxidative phosphorylation (OXPHOS). The mammalian mitochondrial genome encodes 11 mRNAs encoding 13 OXPHOS proteins along with 2 rRNAs and 22 tRNAs, that facilitate their translation on mitoribosomes. Maintaining the internal production of core OXPHOS subunits requires modulation of the mitochondrial capacity to match the cellular requirements and correct insertion of particularly hydrophobic proteins into the inner mitochondrial membrane. The mitochondrial translation system is essential for energy production and defects result in severe, phenotypically diverse diseases, including mitochondrial diseases that typically affect postmitotic tissues with high metabolic demands. Understanding the complex mechanisms that underlie the pathologies of diseases involving impaired mitochondrial translation is key to tailoring specific treatments and effectively targeting the affected organs. Disease mutations have provided a fundamental, yet limited, understanding of mitochondrial protein synthesis, since effective modification of the mitochondrial genome has proven challenging. However, advances in next generation sequencing, cryoelectron microscopy, and multi-omic technologies have revealed unexpected and unusual features of the mitochondrial protein synthesis machinery in the last decade. Genome editing tools have generated unique models that have accelerated our mechanistic understanding of mitochondrial translation and its physiological importance. Here we review the most recent mouse models of disease pathogenesis caused by defects in mitochondrial protein synthesis and discuss their value for preclinical research and therapeutic development.
Collapse
Affiliation(s)
- Laetitia A Hughes
- Telethon Kids Institute, Northern Entrance, Perth Children’s Hospital, 15 Hospital Avenue, Nedlands, WA 6009, Australia
- Harry Perkins Institute of Medical Research, 6 Verdun Street, Nedlands, WA 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, 35 Stirling Highway, Crawley, WA 6009, The University of Western Australia, Crawley, WA 6009, Australia
| | - Oliver Rackham
- Telethon Kids Institute, Northern Entrance, Perth Children’s Hospital, 15 Hospital Avenue, Nedlands, WA 6009, Australia
- Harry Perkins Institute of Medical Research, 6 Verdun Street, Nedlands, WA 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, 35 Stirling Highway, Crawley, WA 6009, The University of Western Australia, Crawley, WA 6009, Australia
- Curtin Medical School, Curtin University, Kent Street, Bentley, WA 6102, Australia
- Curtin Health Innovation Research Institute, Curtin University, Kent Street, Bentley, WA 6102, Australia
| | - Aleksandra Filipovska
- Telethon Kids Institute, Northern Entrance, Perth Children’s Hospital, 15 Hospital Avenue, Nedlands, WA 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, 35 Stirling Highway, Crawley, WA 6009, The University of Western Australia, Crawley, WA 6009, Australia
- Department of Biochemistry and Molecular Biology, Monash Biomedicine Discovery Institute, Monash University, 19 Innovation Walk, Clayton, Clayton, VIC 3168, Australia
| |
Collapse
|
6
|
Wang Y, Feng G, Huang Y. The Schizosaccharomyces pombe DEAD-box protein Mss116 is required for mitoribosome assembly and mitochondrial translation. Mitochondrion 2024; 76:101881. [PMID: 38604460 DOI: 10.1016/j.mito.2024.101881] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 04/02/2024] [Accepted: 04/07/2024] [Indexed: 04/13/2024]
Abstract
DEAD-box helicases are important players in mitochondrial gene expression, which is necessary for mitochondrial respiration. In this study, we characterized Schizosaccharomyces pombe Mss116 (spMss116), a member of the family of DEAD-box RNA helicases. Deletion of spmss116 in a mitochondrial intron-containing background significantly reduced the levels of mitochondrial DNA (mtDNA)-encoded cox1 and cob1 mRNAs and impaired mitochondrial translation, leading to a severe respiratory defect and a loss of cell viability during stationary phase. Deletion of mitochondrial introns restored the levels of cox1 and cob1 mRNAs to wide-type (WT) levels but could not restore mitochondrial translation and respiration in Δspmss116 cells. Furthermore, deletion of spmss116 in both mitochondrial intron-containing and intronless backgrounds impaired mitoribosome assembly and destabilization of mitoribosomal proteins. Our findings suggest that defective mitochondrial translation caused by deletion of spmss116 is most likely due to impaired mitoribosome assembly.
Collapse
Affiliation(s)
- Yirong Wang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, School of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China
| | - Gang Feng
- Jiangsu Key Laboratory for Microbes and Functional Genomics, School of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China.
| | - Ying Huang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, School of Life Sciences, Nanjing Normal University, 1 Wenyuan Road, Nanjing 210023, China.
| |
Collapse
|
7
|
Wang Y, Jin T, Huang Y. Sls1 and Mtf2 mediate the assembly of the Mrh5C complex required for activation of cox1 mRNA translation. J Biol Chem 2024; 300:107176. [PMID: 38499152 PMCID: PMC11015131 DOI: 10.1016/j.jbc.2024.107176] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Revised: 03/06/2024] [Accepted: 03/09/2024] [Indexed: 03/20/2024] Open
Abstract
Mitochondrial translation depends on mRNA-specific activators. In Schizosaccharomyces pombe, DEAD-box protein Mrh5, pentatricopeptide repeat (PPR) protein Ppr4, Mtf2, and Sls1 form a stable complex (designated Mrh5C) required for translation of mitochondrial DNA (mtDNA)-encoded cox1 mRNA, the largest subunit of the cytochrome c oxidase complex. However, how Mrh5C is formed and what role Mrh5C plays in cox1 mRNA translation have not been reported. To address these questions, we investigated the role of individual Mrh5C subunits in the assembly and function of Mrh5C. Our results revealed that Mtf2 and Sls1 form a subcomplex that serves as a scaffold to bring Mrh5 and Ppr4 together. Mrh5C binds to the small subunit of the mitoribosome (mtSSU), but each subunit could not bind to the mtSSU independently. Importantly, Mrh5C is required for the association of cox1 mRNA with the mtSSU. Finally, we investigated the importance of the signature DEAD-box in Mrh5. We found that the DEAD-box of Mrh5 is required for the association of Mrh5C and cox1 mRNA with the mtSSU. Unexpectedly, this motif is also required for the interaction of Mrh5 with other Mrh5C subunits. Altogether, our results suggest that Mrh5 and Ppr4 cooperate in activating the translation of cox1 mRNA. Our results also suggest that Mrh5C activates the translation of cox1 mRNA by promoting the recruitment of cox1 mRNA to the mtSSU.
Collapse
Affiliation(s)
- Yirong Wang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Nanjing Normal University, Nanjing, China
| | - Ting Jin
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Nanjing Normal University, Nanjing, China
| | - Ying Huang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, Nanjing Normal University, Nanjing, China.
| |
Collapse
|
8
|
Rimoldi M, Magri F, Antognozzi S, Ripolone M, Salani S, Piga D, Bertolasi L, Zanotti S, Ciscato P, Fortunato F, Moggio M, Corti S, Comi GP, Ronchi D. Prominent muscle involvement in a familial form of mitochondrial disease due to a COA8 variant. Front Genet 2023; 14:1278572. [PMID: 38098475 PMCID: PMC10720436 DOI: 10.3389/fgene.2023.1278572] [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: 08/16/2023] [Accepted: 11/20/2023] [Indexed: 12/17/2023] Open
Abstract
Isolated mitochondrial respiratory chain Complex IV (Cytochrome c Oxidase or COX) deficiency is the second most frequent isolated respiratory chain defect. Causative mutations are mainly identified in structural COX subunits or in proteins involved in the maturation and assembly of the COX holocomplex. We describe an Italian familial case of mitochondrial myopathy due to a variant in the COX assembly factor 8 gene (COA8). Patient 1 is a 52-year-old woman who presented generalized epilepsy and retinitis pigmentosa at 10 years of age. From her early adulthood she complained about cramps and myalgia after exercise, and bilateral hearing loss emerged. Last neurological examination (52 years of age) showed bilateral ptosis, muscle weakness, peripheral neuropathy, mild dysarthria and dysphonia, cognitive impairment. Muscle biopsy had shown the presence of ragged-red fibers. Patient 2 (Patient 1's sister) is a 53-year-old woman presenting fatigability, myalgia, and hearing loss. Neurological examination showed ptosis and muscle weakness. Muscle biopsy displayed a diffuse reduction of COX activity staining and ragged-red fibers. Both sisters presented secondary amenorrhea. After ruling out mtDNA mutations, Whole Exome Sequencing analysis identified the novel homozygous COA8 defect c.170_173dupGACC, p.(Pro59fs) in the probands. Loss-of-function COA8 mutations have been associated with cavitating leukoencephalopathy with COX deficiency in 9 reported individuals. Disease course shows an early-onset rapid clinical deterioration, affecting both cognitive and motor functions over months, followed by stabilization and slow improvement over several years. Our findings expand the clinical spectrum of COA8-related disease. We confirm the benign course of this rare disorder, highlighting its (intrafamilial) clinical variability.
Collapse
Affiliation(s)
- Martina Rimoldi
- Neuromuscular and Rare Diseases Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Francesca Magri
- Neurology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Sara Antognozzi
- Neurology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Michela Ripolone
- Neuromuscular and Rare Diseases Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Sabrina Salani
- Neurology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Daniela Piga
- Neurology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Letizia Bertolasi
- Neurology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Simona Zanotti
- Neuromuscular and Rare Diseases Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Patrizia Ciscato
- Neuromuscular and Rare Diseases Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Francesco Fortunato
- Neurology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Maurizio Moggio
- Neuromuscular and Rare Diseases Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
| | - Stefania Corti
- Neuromuscular and Rare Diseases Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Giacomo Pietro Comi
- Neurology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| | - Dario Ronchi
- Neurology Unit, Fondazione IRCCS Ca’ Granda Ospedale Maggiore Policlinico, Milan, Italy
- Dino Ferrari Center, Department of Pathophysiology and Transplantation, University of Milan, Milan, Italy
| |
Collapse
|
9
|
Speck SL, Bhatt DP, Zhang Q, Adak S, Yin L, Dong G, Feng C, Zhang W, Ben Major M, Wei X, Semenkovich CF. Hepatic palmitoyl-proteomes and acyl-protein thioesterase protein proximity networks link lipid modification and mitochondria. Cell Rep 2023; 42:113389. [PMID: 37925639 PMCID: PMC10872372 DOI: 10.1016/j.celrep.2023.113389] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2023] [Revised: 08/24/2023] [Accepted: 10/23/2023] [Indexed: 11/07/2023] Open
Abstract
Acyl-protein thioesterases 1 and 2 (APT1 and APT2) reverse S-acylation, a potential regulator of systemic glucose metabolism in mammals. Palmitoylation proteomics in liver-specific knockout mice shows that APT1 predominates over APT2, primarily depalmitoylating mitochondrial proteins, including proteins linked to glutamine metabolism. miniTurbo-facilitated determination of the protein-protein proximity network of APT1 and APT2 in HepG2 cells reveals APT proximity networks encompassing mitochondrial proteins including the major translocases Tomm20 and Timm44. APT1 also interacts with Slc1a5 (ASCT2), the only glutamine transporter known to localize to mitochondria. High-fat-diet-fed male mice with dual (but not single) hepatic deletion of APT1 and APT2 have insulin resistance, fasting hyperglycemia, increased glutamine-driven gluconeogenesis, and decreased liver mass. These data suggest that APT1 and APT2 regulation of hepatic glucose metabolism and insulin signaling is functionally redundant. Identification of substrates and protein-protein proximity networks for APT1 and APT2 establishes a framework for defining mechanisms underlying metabolic disease.
Collapse
Affiliation(s)
- Sarah L Speck
- Division of Endocrinology, Metabolism & Lipid Research, Washington University, St. Louis, MO 63110, USA
| | - Dhaval P Bhatt
- Department of Cell Biology & Physiology, Washington University, St. Louis, MO 63110, USA
| | - Qiang Zhang
- Division of Endocrinology, Metabolism & Lipid Research, Washington University, St. Louis, MO 63110, USA
| | - Sangeeta Adak
- Division of Endocrinology, Metabolism & Lipid Research, Washington University, St. Louis, MO 63110, USA
| | - Li Yin
- Division of Endocrinology, Metabolism & Lipid Research, Washington University, St. Louis, MO 63110, USA
| | - Guifang Dong
- Division of Endocrinology, Metabolism & Lipid Research, Washington University, St. Louis, MO 63110, USA; Hubei Key Laboratory of Animal Nutrition and Feed Science, Wuhan Polytechnic University, Wuhan 430023, China
| | - Chu Feng
- Division of Endocrinology, Metabolism & Lipid Research, Washington University, St. Louis, MO 63110, USA
| | - Wei Zhang
- Division of Endocrinology, Metabolism & Lipid Research, Washington University, St. Louis, MO 63110, USA
| | - M Ben Major
- Department of Cell Biology & Physiology, Washington University, St. Louis, MO 63110, USA; Department of Otolaryngology, Washington University, St. Louis, MO 63110, USA
| | - Xiaochao Wei
- Division of Endocrinology, Metabolism & Lipid Research, Washington University, St. Louis, MO 63110, USA.
| | - Clay F Semenkovich
- Division of Endocrinology, Metabolism & Lipid Research, Washington University, St. Louis, MO 63110, USA; Department of Cell Biology & Physiology, Washington University, St. Louis, MO 63110, USA.
| |
Collapse
|
10
|
Baleva MV, Piunova UE, Chicherin IV, Levitskii SA, Kamenski PA. Diversity and Evolution of Mitochondrial Translation Apparatus. BIOCHEMISTRY. BIOKHIMIIA 2023; 88:1832-1843. [PMID: 38105202 DOI: 10.1134/s0006297923110135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/18/2023] [Revised: 09/25/2023] [Accepted: 09/26/2023] [Indexed: 12/19/2023]
Abstract
The evolution of mitochondria has proceeded independently in different eukaryotic lines, which is reflected in the diversity of mitochondrial genomes and mechanisms of their expression in eukaryotic species. Mitochondria have lost most of bacterial ancestor genes by transferring them to the nucleus or eliminating them. However, mitochondria of almost all eukaryotic cells still retain relatively small genomes, as well as their replication, transcription, and translation apparatuses. The dependence on the nuclear genome, specific features of mitochondrial transcripts, and synthesis of highly hydrophobic membrane proteins in the mitochondria have led to significant changes in the translation apparatus inherited from the bacterial ancestor, which retained the basic structure necessary for protein synthesis but became more specialized and labile. In this review, we discuss specific properties of translation initiation in the mitochondria and how the evolution of mitochondria affected the functions of main factors initiating protein biosynthesis in these organelles.
Collapse
Affiliation(s)
- Mariya V Baleva
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Ulyana E Piunova
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Ivan V Chicherin
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Sergey A Levitskii
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Piotr A Kamenski
- Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.
| |
Collapse
|
11
|
Sun Q, Shi L, Li S, Li J, Zhang R, Huang X, Shao Y, Feng Z, Peng Y, Yang Z, Liu J, Liu H, Long J. PET117 assembly factor stabilizes translation activator TACO1 thereby upregulates mitochondria-encoded cytochrome C oxidase 1 synthesis. Free Radic Biol Med 2023; 205:13-24. [PMID: 37247699 DOI: 10.1016/j.freeradbiomed.2023.05.023] [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: 03/12/2023] [Revised: 05/19/2023] [Accepted: 05/19/2023] [Indexed: 05/31/2023]
Abstract
Cytochrome c oxidase, also known as complex IV, facilitates the transfer of electrons from cytochrome c to molecular oxygen, resulting in the production of ATP. The assembly of complex IV is a tightly regulated and intricate process that entails the coordinated synthesis and integration of subunits encoded by the mitochondria and nucleus into a functional complex. Accurate regulation of translation is crucial for maintaining proper mitochondrial function, and defects in this process can lead to a wide range of mitochondrial disorders and diseases. However, the mechanisms governing mRNA translation by mitoribosomes in mammals remain largely unknown. In this study, we elucidate the critical role of PET117, a chaperone protein involved in complex IV assembly, in the regulation of mitochondria-encoded cytochrome c oxidase 1 (COX1) protein synthesis in human cells. Depletion of PET117 reduced mitochondrial oxygen consumption rate and impaired mitochondrial function. PET117 was found to interact with and stabilize translational activator of COX1 (TACO1) and prevent its ubiquitination. TACO1 overexpression rescued the inhibitory effects on mitochondria caused by PET117 deficiency. These findings provide evidence for a novel PET117-TACO1 axis in the regulation of mitochondrial protein expression, and revealed a previously unknown role of PET117 in human cells.
Collapse
Affiliation(s)
- Qiong Sun
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Le Shi
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Shuaijun Li
- School of Basic Medical Sciences, Key Laboratory of Environment and Genes Related to Diseases of Ministry of Education, Xi'an Jiaotong University, Xi'an, Shaanxi, 710061, China
| | - Jialu Li
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Ruifen Zhang
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Xinghuai Huang
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Yongping Shao
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Zhihui Feng
- Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Yunhua Peng
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Zhiwei Yang
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, School of Physics, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China
| | - Jiankang Liu
- School of Health and Life Sciences, University of Health and Rehabilitation Sciences, Qingdao, Shandong, 266071, China
| | - Huadong Liu
- School of Health and Life Sciences, University of Health and Rehabilitation Sciences, Qingdao, Shandong, 266071, China.
| | - Jiangang Long
- Center for Mitochondrial Biology and Medicine, The Key Laboratory of Biomedical Information Engineering of Ministry of Education, School of Life Science and Technology, Xi'an Jiaotong University, Xi'an, Shaanxi, 710049, China.
| |
Collapse
|
12
|
Ma J, Sun L, Gao W, Li Y, Dong D. RNA binding protein: coordinated expression between the nuclear and mitochondrial genomes in tumors. J Transl Med 2023; 21:512. [PMID: 37507746 PMCID: PMC10386658 DOI: 10.1186/s12967-023-04373-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2023] [Accepted: 07/18/2023] [Indexed: 07/30/2023] Open
Abstract
Mitochondria are the only organelles regulated by two genomes. The coordinated translation of nuclear DNA (nDNA) and mitochondrial DNA (mtDNA), which together co-encode the subunits of the oxidative phosphorylation (OXPHOS) complex, is critical for determining the metabolic plasticity of tumor cells. RNA-binding protein (RBP) is a post-transcriptional regulatory factor that plays a pivotal role in determining the fate of mRNA. RBP rapidly and effectively reshapes the mitochondrial proteome in response to intracellular and extracellular stressors, mediating the cytoplasmic and mitochondrial translation balance to adjust mitochondrial respiratory capacity and provide energy for tumor cells to adapt to different environmental pressures and growth needs. This review highlights the ability of RBPs to use liquid-liquid phase separation (LLPS) as a platform for translation regulation, integrating nuclear-mitochondrial positive and retrograde signals to coordinate cross-department translation, reshape mitochondrial energy metabolism, and promote the development and survival of tumor cells.
Collapse
Affiliation(s)
- Jiaoyan Ma
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China
| | - Liankun Sun
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China
| | - Weinan Gao
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China
| | - Yang Li
- Department of Physiology, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China
| | - Delu Dong
- Department of Pathophysiology, College of Basic Medical Sciences, Jilin University, Changchun, 130021, China.
| |
Collapse
|
13
|
Nadler F, Richter-Dennerlein R. Translation termination in human mitochondria - substrate specificity of mitochondrial release factors. Biol Chem 2023; 404:769-779. [PMID: 37377370 DOI: 10.1515/hsz-2023-0127] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Accepted: 06/19/2023] [Indexed: 06/29/2023]
Abstract
Mitochondria are the essential players in eukaryotic ATP production by oxidative phosphorylation, which relies on the maintenance and accurate expression of the mitochondrial genome. Even though the basic principles of translation are conserved due to the descendance from a bacterial ancestor, some deviations regarding translation factors as well as mRNA characteristics and the applied genetic code are present in human mitochondria. Together, these features are certain challenges during translation the mitochondrion has to handle. Here, we discuss the current knowledge regarding mitochondrial translation focusing on the termination process and the associated quality control mechanisms. We describe how mtRF1a resembles bacterial RF1 mechanistically and summarize in vitro and recent in vivo data leading to the conclusion of mtRF1a being the major mitochondrial release factor. On the other hand, we discuss the ongoing debate about the function of the second codon-dependent mitochondrial release factor mtRF1 regarding its role as a specialized termination factor. Finally, we link defects in mitochondrial translation termination to the activation of mitochondrial rescue mechanisms highlighting the importance of ribosome-associated quality control for sufficient respiratory function and therefore for human health.
Collapse
Affiliation(s)
- Franziska Nadler
- Department of Cellular Biochemistry, University Medical Center Göttingen, D-37073 Göttingen, Germany
| | - Ricarda Richter-Dennerlein
- Department of Cellular Biochemistry, University Medical Center Göttingen, D-37073 Göttingen, Germany
- Cluster of Excellence "Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells" (MBExC), University of Göttingen, D-37075 Göttingen, Germany
- Goettingen Center for Molecular Biosciences, University of Göttingen, D-37077 Göttingen, Germany
| |
Collapse
|
14
|
Hughes LA, Rudler DL, Siira SJ, McCubbin T, Raven SA, Browne JM, Ermer JA, Rientjes J, Rodger J, Marcellin E, Rackham O, Filipovska A. Copy number variation in tRNA isodecoder genes impairs mammalian development and balanced translation. Nat Commun 2023; 14:2210. [PMID: 37072429 PMCID: PMC10113395 DOI: 10.1038/s41467-023-37843-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2023] [Accepted: 03/29/2023] [Indexed: 04/20/2023] Open
Abstract
The number of tRNA isodecoders has increased dramatically in mammals, but the specific molecular and physiological reasons for this expansion remain elusive. To address this fundamental question we used CRISPR editing to knockout the seven-membered phenylalanine tRNA gene family in mice, both individually and combinatorially. Using ATAC-Seq, RNA-seq, ribo-profiling and proteomics we observed distinct molecular consequences of single tRNA deletions. We show that tRNA-Phe-1-1 is required for neuronal function and its loss is partially compensated by increased expression of other tRNAs but results in mistranslation. In contrast, the other tRNA-Phe isodecoder genes buffer the loss of each of the remaining six tRNA-Phe genes. In the tRNA-Phe gene family, the expression of at least six tRNA-Phe alleles is required for embryonic viability and tRNA-Phe-1-1 is most important for development and survival. Our results reveal that the multi-copy configuration of tRNA genes is required to buffer translation and viability in mammals.
Collapse
Affiliation(s)
- Laetitia A Hughes
- Harry Perkins Institute of Medical Research, Perth, WA, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, WA, 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, WA, 6009, Australia
| | - Danielle L Rudler
- Harry Perkins Institute of Medical Research, Perth, WA, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, WA, 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, WA, 6009, Australia
| | - Stefan J Siira
- Harry Perkins Institute of Medical Research, Perth, WA, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, WA, 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, WA, 6009, Australia
| | - Tim McCubbin
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, 4072, QLD, Australia
| | - Samuel A Raven
- Harry Perkins Institute of Medical Research, Perth, WA, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, WA, 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, WA, 6009, Australia
| | - Jasmin M Browne
- Harry Perkins Institute of Medical Research, Perth, WA, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, WA, 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, WA, 6009, Australia
| | - Judith A Ermer
- Harry Perkins Institute of Medical Research, Perth, WA, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, WA, 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, WA, 6009, Australia
| | - Jeanette Rientjes
- Monash Genome Modification Platform, Monash University, 35 Rainforest Walk, Clayton, VIC, 3800, Australia
| | - Jennifer Rodger
- School of Biological Sciences (Physiology), The University of Western Australia, Crawley, WA, 6009, Australia
- Perron Institute for Neurological and Translational Sciences, Nedlands, WA, 6009, Australia
| | - Esteban Marcellin
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, WA, 6009, Australia
- Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Brisbane, 4072, QLD, Australia
- Queensland Metabolomics and Proteomics (Q-MAP), The University of Queensland, Brisbane, 4072, QLD, Australia
| | - Oliver Rackham
- Harry Perkins Institute of Medical Research, Perth, WA, Australia.
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, WA, 6009, Australia.
- Curtin Medical School, Curtin University, Bentley, WA, 6102, Australia.
- Curtin Health Innovation Research Institute, Curtin University, Bentley, WA, 6102, Australia.
- Telethon Kids Institute, Northern Entrance, Perth Children's Hospital, 15 Hospital Avenue, Nedlands, WA, Australia.
| | - Aleksandra Filipovska
- Harry Perkins Institute of Medical Research, Perth, WA, Australia.
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, WA, 6009, Australia.
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, WA, 6009, Australia.
- Telethon Kids Institute, Northern Entrance, Perth Children's Hospital, 15 Hospital Avenue, Nedlands, WA, Australia.
| |
Collapse
|
15
|
Rubalcava-Gracia D, García-Villegas R, Larsson NG. No role for nuclear transcription regulators in mammalian mitochondria? Mol Cell 2023; 83:832-842. [PMID: 36182692 DOI: 10.1016/j.molcel.2022.09.010] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2022] [Revised: 08/17/2022] [Accepted: 09/08/2022] [Indexed: 10/14/2022]
Abstract
Although the mammalian mtDNA transcription machinery is simple and resembles bacteriophage systems, there are many reports that nuclear transcription regulators, as exemplified by MEF2D, MOF, PGC-1α, and hormone receptors, are imported into mammalian mitochondria and directly interact with the mtDNA transcription machinery. However, the supporting experimental evidence for this concept is open to alternate interpretations, and a main issue is the difficulty in distinguishing indirect regulation of mtDNA transcription, caused by altered nuclear gene expression, from direct intramitochondrial effects. We provide a critical discussion and experimental guidelines to stringently assess roles of intramitochondrial factors implicated in direct regulation of mammalian mtDNA transcription.
Collapse
Affiliation(s)
- Diana Rubalcava-Gracia
- Division of Molecular Metabolism, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Rodolfo García-Villegas
- Division of Molecular Metabolism, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Nils-Göran Larsson
- Division of Molecular Metabolism, Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden.
| |
Collapse
|
16
|
RNAseq Analysis of FABP4 Knockout Mouse Hippocampal Transcriptome Suggests a Role for WNT/β-Catenin in Preventing Obesity-Induced Cognitive Impairment. Int J Mol Sci 2023; 24:ijms24043381. [PMID: 36834799 PMCID: PMC9961923 DOI: 10.3390/ijms24043381] [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: 12/22/2022] [Revised: 02/02/2023] [Accepted: 02/06/2023] [Indexed: 02/10/2023] Open
Abstract
Microglial fatty-acid binding protein 4 (FABP4) is a regulator of neuroinflammation. We hypothesized that the link between lipid metabolism and inflammation indicates a role for FABP4 in regulating high fat diet (HFD)-induced cognitive decline. We have previously shown that obese FABP4 knockout mice exhibit decreased neuroinflammation and cognitive decline. FABP4 knockout and wild type mice were fed 60% HFD for 12 weeks starting at 15 weeks old. Hippocampal tissue was dissected and RNA-seq was performed to measure differentially expressed transcripts. Reactome molecular pathway analysis was utilized to examine differentially expressed pathways. Results showed that HFD-fed FABP4 knockout mice have a hippocampal transcriptome consistent with neuroprotection, including associations with decreased proinflammatory signaling, ER stress, apoptosis, and cognitive decline. This is accompanied by an increase in transcripts upregulating neurogenesis, synaptic plasticity, long-term potentiation, and spatial working memory. Pathway analysis revealed that mice lacking FABP4 had changes in metabolic function that support reduction in oxidative stress and inflammation, and improved energy homeostasis and cognitive function. Analysis suggested a role for WNT/β-Catenin signaling in the protection against insulin resistance, alleviating neuroinflammation and cognitive decline. Collectively, our work shows that FABP4 represents a potential target in alleviating HFD-induced neuroinflammation and cognitive decline and suggests a role for WNT/β-Catenin in this protection.
Collapse
|
17
|
Hubble KA, Henry MF. DPC29 promotes post-initiation mitochondrial translation in Saccharomyces cerevisiae. Nucleic Acids Res 2023; 51:1260-1276. [PMID: 36620885 PMCID: PMC9943650 DOI: 10.1093/nar/gkac1229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2022] [Revised: 12/07/2022] [Accepted: 12/09/2022] [Indexed: 01/10/2023] Open
Abstract
Mitochondrial ribosomes synthesize essential components of the oxidative phosphorylation (OXPHOS) system in a tightly regulated process. In the yeast Saccharomyces cerevisiae, mitochondrial mRNAs require specific translational activators, which orchestrate protein synthesis by recognition of their target gene's 5'-untranslated region (UTR). Most of these yeast genes lack orthologues in mammals, and only one such gene-specific translational activator has been proposed in humans-TACO1. The mechanism by which TACO1 acts is unclear because mammalian mitochondrial mRNAs do not have significant 5'-UTRs, and therefore must promote translation by alternative mechanisms. In this study, we examined the role of the TACO1 orthologue in yeast. We found this 29 kDa protein to be a general mitochondrial translation factor, Dpc29, rather than a COX1-specific translational activator. Its activity was necessary for the optimal expression of OXPHOS mtDNA reporters, and mutations within the mitoribosomal large subunit protein gene MRP7 produced a global reduction of mitochondrial translation in dpc29Δ cells, indicative of a general mitochondrial translation factor. Northern-based mitoribosome profiling of dpc29Δ cells showed higher footprint frequencies at the 3' ends of mRNAs, suggesting a role in translation post-initiation. Additionally, human TACO1 expressed at native levels rescued defects in dpc29Δ yeast strains, suggesting that the two proteins perform highly conserved functions.
Collapse
Affiliation(s)
- Kyle A Hubble
- Department of Molecular Biology, Rowan University School of Osteopathic Medicine, Stratford, NJ 08084, USA,Graduate School of Biomedical Sciences, Rowan University, Stratford, NJ 08084, USA
| | - Michael F Henry
- To whom correspondence should be addressed. Tel: +1 856 566 6970; Fax: +1 856 566 6291; E-mail:
| |
Collapse
|
18
|
Chrzanowska-Lightowlers ZM, Lightowlers RN. Translation in Mitochondrial Ribosomes. Methods Mol Biol 2023; 2661:53-72. [PMID: 37166631 DOI: 10.1007/978-1-0716-3171-3_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/12/2023]
Abstract
Mitochondrial protein synthesis is essential for the life of aerobic eukaryotes. Without it, oxidative phosphorylation cannot be coupled. Evolution has shaped a battery of factors and machinery that are key to production of just a handful of critical proteins. In this general concept chapter, we attempt to briefly summarize our current knowledge of the overall process in mitochondria from a variety of species, breaking this down to the four parts of translation: initiation, elongation, termination, and recycling. Where appropriate, we highlight differences between species and emphasize gaps in our understanding. Excitingly, with the current revolution in cryoelectron microscopy and mitochondrial genome editing, it is highly likely that many of these gaps will be resolved in the near future. However, the absence of a faithful in vitro reconstituted system to study mitochondrial translation is still problematic.
Collapse
Affiliation(s)
- Zofia M Chrzanowska-Lightowlers
- Wellcome Centre for Mitochondrial Research, Newcastle University Biosciences Institute, Faculty of Medical Sciences, Newcastle upon Tyne, UK.
| | - Robert N Lightowlers
- Wellcome Centre for Mitochondrial Research, Newcastle University Biosciences Institute, Faculty of Medical Sciences, Newcastle upon Tyne, UK
| |
Collapse
|
19
|
Bennett CF, Latorre-Muro P, Puigserver P. Mechanisms of mitochondrial respiratory adaptation. Nat Rev Mol Cell Biol 2022; 23:817-835. [PMID: 35804199 PMCID: PMC9926497 DOI: 10.1038/s41580-022-00506-6] [Citation(s) in RCA: 82] [Impact Index Per Article: 41.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/31/2022] [Indexed: 02/07/2023]
Abstract
Mitochondrial energetic adaptations encompass a plethora of conserved processes that maintain cell and organismal fitness and survival in the changing environment by adjusting the respiratory capacity of mitochondria. These mitochondrial responses are governed by general principles of regulatory biology exemplified by changes in gene expression, protein translation, protein complex formation, transmembrane transport, enzymatic activities and metabolite levels. These changes can promote mitochondrial biogenesis and membrane dynamics that in turn support mitochondrial respiration. The main regulatory components of mitochondrial energetic adaptation include: the transcription coactivator peroxisome proliferator-activated receptor-γ (PPARγ) coactivator 1α (PGC1α) and associated transcription factors; mTOR and endoplasmic reticulum stress signalling; TOM70-dependent mitochondrial protein import; the cristae remodelling factors, including mitochondrial contact site and cristae organizing system (MICOS) and OPA1; lipid remodelling; and the assembly and metabolite-dependent regulation of respiratory complexes. These adaptive molecular and structural mechanisms increase respiration to maintain basic processes specific to cell types and tissues. Failure to execute these regulatory responses causes cell damage and inflammation or senescence, compromising cell survival and the ability to adapt to energetically demanding conditions. Thus, mitochondrial adaptive cellular processes are important for physiological responses, including to nutrient availability, temperature and physical activity, and their failure leads to diseases associated with mitochondrial dysfunction such as metabolic and age-associated diseases and cancer.
Collapse
Affiliation(s)
- Christopher F Bennett
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Pedro Latorre-Muro
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA
| | - Pere Puigserver
- Department of Cell Biology, Harvard Medical School, Boston, MA, USA.
- Department of Cancer Biology, Dana-Farber Cancer Institute, Boston, MA, USA.
| |
Collapse
|
20
|
Wang Y, Luo Y, Huang Y. Schizosaccharomyces pombe
Sls1 is primarily required for
cox1
mRNA translation. Yeast 2022; 39:521-534. [DOI: 10.1002/yea.3813] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2022] [Revised: 07/26/2022] [Accepted: 09/08/2022] [Indexed: 11/10/2022] Open
Affiliation(s)
- Yirong Wang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, School of Life SciencesNanjing Normal University1 Wenyuan RoadNanjing210023China
| | - Ying Luo
- Jiangsu Key Laboratory for Microbes and Functional Genomics, School of Life SciencesNanjing Normal University1 Wenyuan RoadNanjing210023China
| | - Ying Huang
- Jiangsu Key Laboratory for Microbes and Functional Genomics, School of Life SciencesNanjing Normal University1 Wenyuan RoadNanjing210023China
| |
Collapse
|
21
|
Mitochondrial rRNA Methylation by Mettl15 Contributes to the Exercise and Learning Capability in Mice. Int J Mol Sci 2022; 23:ijms23116056. [PMID: 35682734 PMCID: PMC9181494 DOI: 10.3390/ijms23116056] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2022] [Revised: 05/22/2022] [Accepted: 05/26/2022] [Indexed: 02/01/2023] Open
Abstract
Mitochondrial translation is a unique relic of the symbiotic origin of the organelle. Alterations of its components cause a number of severe human diseases. Hereby we report a study of mice devoid of Mettl15 mitochondrial 12S rRNA methyltransferase, responsible for the formation of m4C839 residue (human numbering). Homozygous Mettl15−/− mice appeared to be viable in contrast to other mitochondrial rRNA methyltransferase knockouts reported earlier. The phenotype of Mettl15−/− mice is much milder than that of other mutants of mitochondrial translation apparatus. In agreement with the results obtained earlier for cell cultures with an inactivated Mettl15 gene, we observed accumulation of the RbfA factor, normally associated with the precursor of the 28S subunit, in the 55S mitochondrial ribosome fraction of knockout mice. A lack of Mettl15 leads to a lower blood glucose level after physical exercise relative to that of the wild-type mice. Mettl15−/− mice demonstrated suboptimal muscle performance and lower levels of Cox3 protein synthesized by mitoribosomes in the oxidative soleus muscles. Additionally, we detected decreased learning capabilities in the Mettl15−/− knockout mice in the tests with both positive and negative reinforcement. Such properties make Mettl15−/− knockout mice a suitable model for mild mitochondriopathies.
Collapse
|
22
|
Organization and expression of the mammalian mitochondrial genome. Nat Rev Genet 2022; 23:606-623. [PMID: 35459860 DOI: 10.1038/s41576-022-00480-x] [Citation(s) in RCA: 47] [Impact Index Per Article: 23.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/21/2022] [Indexed: 02/07/2023]
Abstract
The mitochondrial genome encodes core subunits of the respiratory chain that drives oxidative phosphorylation and is, therefore, essential for energy conversion. Advances in high-throughput sequencing technologies and cryoelectron microscopy have shed light on the structure and organization of the mitochondrial genome and revealed unique mechanisms of mitochondrial gene regulation. New animal models of impaired mitochondrial protein synthesis have shown how the coordinated regulation of the cytoplasmic and mitochondrial translation machineries ensures the correct assembly of the respiratory chain complexes. These new technologies and disease models are providing a deeper understanding of mitochondrial genome organization and expression and of the diseases caused by impaired energy conversion, including mitochondrial, neurodegenerative, cardiovascular and metabolic diseases. They also provide avenues for the development of treatments for these conditions.
Collapse
|
23
|
Molina‐Berenguer M, Vila‐Julià F, Pérez‐Ramos S, Salcedo‐Allende MT, Cámara Y, Torres‐Torronteras J, Martí R. Dysfunctional mitochondrial translation and combined oxidative phosphorylation deficiency in a mouse model of hepatoencephalopathy due to
Gfm1
mutations. FASEB J 2021; 36:e22091. [DOI: 10.1096/fj.202100819rrr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/28/2021] [Revised: 11/19/2021] [Accepted: 11/23/2021] [Indexed: 11/11/2022]
Affiliation(s)
- Miguel Molina‐Berenguer
- Research Group on Neuromuscular and Mitochondrial Diseases Vall d'Hebron Research Institute Universitat Autònoma de Barcelona Barcelona Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER) Instituto de Salud Carlos III Madrid Spain
| | - Ferran Vila‐Julià
- Research Group on Neuromuscular and Mitochondrial Diseases Vall d'Hebron Research Institute Universitat Autònoma de Barcelona Barcelona Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER) Instituto de Salud Carlos III Madrid Spain
| | - Sandra Pérez‐Ramos
- Research Group on Neuromuscular and Mitochondrial Diseases Vall d'Hebron Research Institute Universitat Autònoma de Barcelona Barcelona Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER) Instituto de Salud Carlos III Madrid Spain
| | - Maria Teresa Salcedo‐Allende
- Pathology Department Vall d'Hebron Research Institute Hospital Universitari Vall d'Hebron Universitat Autònoma de Barcelona Barcelona Spain
| | - Yolanda Cámara
- Research Group on Neuromuscular and Mitochondrial Diseases Vall d'Hebron Research Institute Universitat Autònoma de Barcelona Barcelona Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER) Instituto de Salud Carlos III Madrid Spain
| | - Javier Torres‐Torronteras
- Research Group on Neuromuscular and Mitochondrial Diseases Vall d'Hebron Research Institute Universitat Autònoma de Barcelona Barcelona Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER) Instituto de Salud Carlos III Madrid Spain
| | - Ramon Martí
- Research Group on Neuromuscular and Mitochondrial Diseases Vall d'Hebron Research Institute Universitat Autònoma de Barcelona Barcelona Spain
- Biomedical Network Research Centre on Rare Diseases (CIBERER) Instituto de Salud Carlos III Madrid Spain
| |
Collapse
|
24
|
Rossetti G, Ermer JA, Stentenbach M, Siira SJ, Richman TR, Milenkovic D, Perks KL, Hughes LA, Jamieson E, Xiafukaiti G, Ward NC, Takahashi S, Gray N, Viola HM, Hool LC, Rackham O, Filipovska A. A common genetic variant of a mitochondrial RNA processing enzyme predisposes to insulin resistance. SCIENCE ADVANCES 2021; 7:eabi7514. [PMID: 34559558 PMCID: PMC8462889 DOI: 10.1126/sciadv.abi7514] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 08/04/2021] [Indexed: 05/31/2023]
Abstract
Mitochondrial energy metabolism plays an important role in the pathophysiology of insulin resistance. Recently, a missense N437S variant was identified in the MRPP3 gene, which encodes a mitochondrial RNA processing enzyme within the RNase P complex, with predicted impact on metabolism. We used CRISPR-Cas9 genome editing to introduce this variant into the mouse Mrpp3 gene and show that the variant causes insulin resistance on a high-fat diet. The variant did not influence mitochondrial gene expression markedly, but instead, it reduced mitochondrial calcium that lowered insulin release from the pancreatic islet β cells of the Mrpp3 variant mice. Reduced insulin secretion resulted in lower insulin levels that contributed to imbalanced metabolism and liver steatosis in the Mrpp3 variant mice on a high-fat diet. Our findings reveal that the MRPP3 variant may be a predisposing factor to insulin resistance and metabolic disease in the human population.
Collapse
Affiliation(s)
- Giulia Rossetti
- Harry Perkins Institute of Medical Research, Nedlands, Western Australia 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Judith A. Ermer
- Harry Perkins Institute of Medical Research, Nedlands, Western Australia 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Maike Stentenbach
- Harry Perkins Institute of Medical Research, Nedlands, Western Australia 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Stefan J. Siira
- Harry Perkins Institute of Medical Research, Nedlands, Western Australia 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Tara R. Richman
- Harry Perkins Institute of Medical Research, Nedlands, Western Australia 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | | | - Kara L. Perks
- Harry Perkins Institute of Medical Research, Nedlands, Western Australia 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Laetitia A. Hughes
- Harry Perkins Institute of Medical Research, Nedlands, Western Australia 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Emma Jamieson
- Faculty of Health and Medical Sciences, Medical School, The Rural Clinical School of Western Australia, The University of Western Australia, Bunbury, Western Australia 6230, Australia
| | - Gulibaikelamu Xiafukaiti
- Department of Anatomy and Embryology, Faculty of Medicine, Laboratory Animal Resource Center (LARC), and Transborder Medical Research Center, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Natalie C. Ward
- Dobney Hypertension Centre, Medical School, The University of Western Australia, Perth, Western Australia, Australia
| | - Satoru Takahashi
- Department of Anatomy and Embryology, Faculty of Medicine, Laboratory Animal Resource Center (LARC), and Transborder Medical Research Center, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki 305-8575, Japan
| | - Nicola Gray
- Australian National Phenome Centre, Centre for Computational and Systems Medicine, Health Futures Institute, Murdoch University, Harry Perkins Building, Perth, Western Australia 6150, Australia
| | - Helena M. Viola
- School of Human Sciences (Physiology), The University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Livia C. Hool
- School of Human Sciences (Physiology), The University of Western Australia, Crawley, Western Australia 6009, Australia
- Victor Chang Cardiac Research Institute, Darlinghurst, Sydney, New South Wales 2010, Australia
| | - Oliver Rackham
- Harry Perkins Institute of Medical Research, Nedlands, Western Australia 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Curtin Medical School, Curtin University, Bentley, Western Australia 6102, Australia
- Curtin Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
- Telethon Kids Institute, Northern Entrance, Perth Children’s Hospital, 15 Hospital Avenue, Nedlands, Western Australia, Australia
| | - Aleksandra Filipovska
- Harry Perkins Institute of Medical Research, Nedlands, Western Australia 6009, Australia
- ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Telethon Kids Institute, Northern Entrance, Perth Children’s Hospital, 15 Hospital Avenue, Nedlands, Western Australia, Australia
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia 6009, Australia
| |
Collapse
|
25
|
Baleva MV, Piunova UE, Chicherin IV, Krasavina DG, Levitskii SA, Kamenski PA. Yeast Translational Activator Mss51p and Human ZMYND17 - Two Proteins with a Common Origin, but Different Functions. BIOCHEMISTRY. BIOKHIMIIA 2021; 86:1151-1161. [PMID: 34565318 DOI: 10.1134/s0006297921090108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 07/19/2021] [Accepted: 07/19/2021] [Indexed: 11/23/2022]
Abstract
Despite its similarity to protein biosynthesis in bacteria, translation in the mitochondria of modern eukaryotes has several unique features, such as the necessity for coordination of translation of mitochondrial mRNAs encoding proteins of the electron transport chain complexes with translation of other protein components of these complexes in the cytosol. In the mitochondria of baker's yeast Saccharomyces cerevisiae, this coordination is carried out by a system of translational activators that predominantly interact with the 5'-untranslated regions of mitochondrial mRNAs. No such system has been found in human mitochondria, except a single identified translational activator, TACO1. Here, we studied the role of the ZMYND17 gene, an ortholog of the yeast gene for the translational activator Mss51p, on the mitochondrial translation in human cells. Deletion of the ZMYND17 gene did not affect translation in the mitochondria, but led to the decrease in the cytochrome c oxidase activity and increase in the amount of free F1 subunit of ATP synthase. We also investigated the evolutionary history of Mss51p and ZMYND17 and suggested a possible mechanism for the divergence of functions of these orthologous proteins.
Collapse
Affiliation(s)
- Maria V Baleva
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Uliyana E Piunova
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Ivan V Chicherin
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Darya G Krasavina
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| | - Sergey A Levitskii
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia.
| | - Piotr A Kamenski
- Department of Molecular Biology, Faculty of Biology, Lomonosov Moscow State University, Moscow, 119234, Russia
| |
Collapse
|
26
|
Human Mitochondrial RNA Processing and Modifications: Overview. Int J Mol Sci 2021; 22:ijms22157999. [PMID: 34360765 PMCID: PMC8348895 DOI: 10.3390/ijms22157999] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2021] [Revised: 07/23/2021] [Accepted: 07/24/2021] [Indexed: 01/29/2023] Open
Abstract
Mitochondria, often referred to as the powerhouses of cells, are vital organelles that are present in almost all eukaryotic organisms, including humans. They are the key energy suppliers as the site of adenosine triphosphate production, and are involved in apoptosis, calcium homeostasis, and regulation of the innate immune response. Abnormalities occurring in mitochondria, such as mitochondrial DNA (mtDNA) mutations and disturbances at any stage of mitochondrial RNA (mtRNA) processing and translation, usually lead to severe mitochondrial diseases. A fundamental line of investigation is to understand the processes that occur in these organelles and their physiological consequences. Despite substantial progress that has been made in the field of mtRNA processing and its regulation, many unknowns and controversies remain. The present review discusses the current state of knowledge of RNA processing in human mitochondria and sheds some light on the unresolved issues.
Collapse
|
27
|
Wang F, Zhang D, Zhang D, Li P, Gao Y. Mitochondrial Protein Translation: Emerging Roles and Clinical Significance in Disease. Front Cell Dev Biol 2021; 9:675465. [PMID: 34277617 PMCID: PMC8280776 DOI: 10.3389/fcell.2021.675465] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2021] [Accepted: 06/09/2021] [Indexed: 12/28/2022] Open
Abstract
Mitochondria are one of the most important organelles in cells. Mitochondria are semi-autonomous organelles with their own genetic system, and can independently replicate, transcribe, and translate mitochondrial DNA. Translation initiation, elongation, termination, and recycling of the ribosome are four stages in the process of mitochondrial protein translation. In this process, mitochondrial protein translation factors and translation activators, mitochondrial RNA, and other regulatory factors regulate mitochondrial protein translation. Mitochondrial protein translation abnormalities are associated with a variety of diseases, including cancer, cardiovascular diseases, and nervous system diseases. Mutation or deletion of various mitochondrial protein translation factors and translation activators leads to abnormal mitochondrial protein translation. Mitochondrial tRNAs and mitochondrial ribosomal proteins are essential players during translation and mutations in genes encoding them represent a large fraction of mitochondrial diseases. Moreover, there is crosstalk between mitochondrial protein translation and cytoplasmic translation, and the imbalance between mitochondrial protein translation and cytoplasmic translation can affect some physiological and pathological processes. This review summarizes the regulation of mitochondrial protein translation factors, mitochondrial ribosomal proteins, mitochondrial tRNAs, and mitochondrial aminoacyl-tRNA synthetases (mt-aaRSs) in the mitochondrial protein translation process and its relationship with diseases. The regulation of mitochondrial protein translation and cytoplasmic translation in multiple diseases is also summarized.
Collapse
Affiliation(s)
- Fei Wang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Deyu Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Dejiu Zhang
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Peifeng Li
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China
| | - Yanyan Gao
- Institute for Translational Medicine, The Affiliated Hospital of Qingdao University, College of Medicine, Qingdao University, Qingdao, China.,Key Laboratory of Nuclear Medicine, Ministry of Health, Jiangsu Key Laboratory of Molecular Nuclear Medicine, Jiangsu Institute of Nuclear Medicine, Wuxi, China
| |
Collapse
|
28
|
Richman TR, Ermer JA, Siira SJ, Kuznetsova I, Brosnan CA, Rossetti G, Baker J, Perks KL, Cserne Szappanos H, Viola HM, Gray N, Larance M, Hool LC, Zuryn S, Rackham O, Filipovska A. Mitochondrial mistranslation modulated by metabolic stress causes cardiovascular disease and reduced lifespan. Aging Cell 2021; 20:e13408. [PMID: 34096683 PMCID: PMC8282274 DOI: 10.1111/acel.13408] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 03/17/2021] [Accepted: 05/08/2021] [Indexed: 12/25/2022] Open
Abstract
Changes in the rate and fidelity of mitochondrial protein synthesis impact the metabolic and physiological roles of mitochondria. Here we explored how environmental stress in the form of a high-fat diet modulates mitochondrial translation and affects lifespan in mutant mice with error-prone (Mrps12ep / ep ) or hyper-accurate (Mrps12ha / ha ) mitochondrial ribosomes. Intriguingly, although both mutations are metabolically beneficial in reducing body weight, decreasing circulating insulin and increasing glucose tolerance during a high-fat diet, they manifest divergent (either deleterious or beneficial) outcomes in a tissue-specific manner. In two distinct organs that are commonly affected by the metabolic disease, the heart and the liver, Mrps12ep / ep mice were protected against heart defects but sensitive towards lipid accumulation in the liver, activating genes involved in steroid and amino acid metabolism. In contrast, enhanced translational accuracy in Mrps12ha / ha mice protected the liver from a high-fat diet through activation of liver proliferation programs, but enhanced the development of severe hypertrophic cardiomyopathy and led to reduced lifespan. These findings reflect the complex transcriptional and cell signalling responses that differ between post-mitotic (heart) and highly proliferative (liver) tissues. We show trade-offs between the rate and fidelity of mitochondrial protein synthesis dictate tissue-specific outcomes due to commonly encountered stressful environmental conditions or aging.
Collapse
Affiliation(s)
- Tara R. Richman
- Harry Perkins Institute of Medical Research QEII Medical Centre Nedlands WA Australia
- ARC Centre of Excellence in Synthetic Biology QEII Medical Centre Nedlands WA Australia
- Centre for Medical Research QEII Medical Centre, The University of Western Australia Nedlands WA Australia
| | - Judith A. Ermer
- Harry Perkins Institute of Medical Research QEII Medical Centre Nedlands WA Australia
- ARC Centre of Excellence in Synthetic Biology QEII Medical Centre Nedlands WA Australia
- Centre for Medical Research QEII Medical Centre, The University of Western Australia Nedlands WA Australia
| | - Stefan J. Siira
- Harry Perkins Institute of Medical Research QEII Medical Centre Nedlands WA Australia
- ARC Centre of Excellence in Synthetic Biology QEII Medical Centre Nedlands WA Australia
- Centre for Medical Research QEII Medical Centre, The University of Western Australia Nedlands WA Australia
| | - Irina Kuznetsova
- Harry Perkins Institute of Medical Research QEII Medical Centre Nedlands WA Australia
- ARC Centre of Excellence in Synthetic Biology QEII Medical Centre Nedlands WA Australia
- Centre for Medical Research QEII Medical Centre, The University of Western Australia Nedlands WA Australia
| | - Christopher A. Brosnan
- Clem Jones Centre for Ageing Dementia Research Queensland Brain Institute The University of Queensland Brisbane Qld Australia
| | - Giulia Rossetti
- Harry Perkins Institute of Medical Research QEII Medical Centre Nedlands WA Australia
- ARC Centre of Excellence in Synthetic Biology QEII Medical Centre Nedlands WA Australia
- Centre for Medical Research QEII Medical Centre, The University of Western Australia Nedlands WA Australia
- Telethon Kids Institute Perth Children's Hospital Nedlands WA Australia
| | - Jessica Baker
- Harry Perkins Institute of Medical Research QEII Medical Centre Nedlands WA Australia
- ARC Centre of Excellence in Synthetic Biology QEII Medical Centre Nedlands WA Australia
- Centre for Medical Research QEII Medical Centre, The University of Western Australia Nedlands WA Australia
- Telethon Kids Institute Perth Children's Hospital Nedlands WA Australia
| | - Kara L. Perks
- Harry Perkins Institute of Medical Research QEII Medical Centre Nedlands WA Australia
- ARC Centre of Excellence in Synthetic Biology QEII Medical Centre Nedlands WA Australia
- Centre for Medical Research QEII Medical Centre, The University of Western Australia Nedlands WA Australia
- Telethon Kids Institute Perth Children's Hospital Nedlands WA Australia
- School of Pharmacy and Biomedical Sciences Curtin University Bentley WA Australia
| | | | - Helena M. Viola
- School of Human Sciences The University of Western Australia Nedlands WA Australia
| | - Nicola Gray
- Australian National Phenome Centre Centre for Computational and Systems Medicine Health Futures Institute Murdoch University Perth WA Australia
| | - Mark Larance
- Charles Perkins Centre School of Life and Environmental Sciences University of Sydney Sydney NSW Australia
| | - Livia C. Hool
- School of Human Sciences The University of Western Australia Nedlands WA Australia
- Victor Chang Cardiac Research Institute Sydney NSW Australia
| | - Steven Zuryn
- Clem Jones Centre for Ageing Dementia Research Queensland Brain Institute The University of Queensland Brisbane Qld Australia
| | - Oliver Rackham
- Harry Perkins Institute of Medical Research QEII Medical Centre Nedlands WA Australia
- ARC Centre of Excellence in Synthetic Biology QEII Medical Centre Nedlands WA Australia
- Centre for Medical Research QEII Medical Centre, The University of Western Australia Nedlands WA Australia
- Telethon Kids Institute Perth Children's Hospital Nedlands WA Australia
- School of Pharmacy and Biomedical Sciences Curtin University Bentley WA Australia
| | - Aleksandra Filipovska
- Harry Perkins Institute of Medical Research QEII Medical Centre Nedlands WA Australia
- ARC Centre of Excellence in Synthetic Biology QEII Medical Centre Nedlands WA Australia
- Centre for Medical Research QEII Medical Centre, The University of Western Australia Nedlands WA Australia
- Telethon Kids Institute Perth Children's Hospital Nedlands WA Australia
- Victor Chang Cardiac Research Institute Sydney NSW Australia
| |
Collapse
|
29
|
Shen Y, Wang X, Yuan R, Pan X, Yang X, Cai J, Li Y, Yin A, Xiao Q, Ji Q, Li Y, He B, Shen L. Prostaglandin E1 attenuates AngII-induced cardiac hypertrophy via EP3 receptor activation and Netrin-1upregulation. J Mol Cell Cardiol 2021; 159:91-104. [PMID: 34147480 DOI: 10.1016/j.yjmcc.2021.06.009] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2021] [Revised: 05/27/2021] [Accepted: 06/13/2021] [Indexed: 01/09/2023]
Abstract
AIMS Pathological cardiac hypertrophy induced by activation of the renin-angiotensin-aldosterone system (RAAS) is one of the leading causes of heart failure. However, in current clinical practice, the strategy for targeting the RAAS is not sufficient to reverse hypertrophy. Here, we investigated the effect of prostaglandin E1 (PGE1) on angiotensin II (AngII)-induced cardiac hypertrophy and potential molecular mechanisms underlying the effect. METHODS AND RESULTS Adult male C57 mice were continuously infused with AngII or saline and treated daily with PGE1 or vehicle for two weeks. Neonatal rat cardiomyocytes were cultured to detect AngII-induced hypertrophic responses. We found that PGE1 ameliorated AngII-induced cardiac hypertrophy both in vivo and in vitro. The RNA sequencing (RNA-seq) and expression pattern analysis results suggest that Netrin-1 (Ntn1) is the specific target gene of PGE1. The protective effect of PGE1 was eliminated after knockdown of Ntn1. Moreover, Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis showed that the PGE1-mediated signaling pathway changes are associated with the mitogen-activated protein kinase (MAPK) pathway. PGE1 suppressed AngII-induced activation of the MAPK signaling pathway, and such an effect was attenuated by Ntn1 knockdown. Blockade of MAPK signaling rescued the phenotype of cardiomyocytes caused by Ntn1 knockdown, indicating that MAPK signaling may act as the downstream effector of Ntn1. Furthermore, inhibition of the E-prostanoid (EP) 3 receptor, as opposed to the EP1, EP2, or EP4 receptor, in cardiomyocytes reversed the effect of PGE1, and activation of EP3 by sulprostone, a specific agonist, mimicked the effect of PGE1. CONCLUSION In conclusion, PGE1 ameliorates AngII-induced cardiac hypertrophy through activation of the EP3 receptor and upregulation of Ntn1, which inhibits the downstream MAPK signaling pathway. Thus, targeting EP3, as well as the Ntn1-MAPK axis, may represent a novel approach for treating pathological cardiac hypertrophy.
Collapse
Affiliation(s)
- Yejiao Shen
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xia Wang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Ruosen Yuan
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xin Pan
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Xiaoxiao Yang
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Jiali Cai
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yi Li
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Anwen Yin
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Qingqing Xiao
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Qingqi Ji
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Yanjie Li
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China
| | - Ben He
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China.
| | - Linghong Shen
- Department of Cardiology, Shanghai Chest Hospital, Shanghai Jiao Tong University, Shanghai, China.
| |
Collapse
|
30
|
Luo Y, Wang Y, Huang Y. Schizosaccharomyces pombe Ppr10 and Mpa1 together mediate mitochondrial translational initiation. J Biol Chem 2021; 297:100869. [PMID: 34119521 PMCID: PMC8258696 DOI: 10.1016/j.jbc.2021.100869] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Revised: 06/04/2021] [Accepted: 06/09/2021] [Indexed: 12/26/2022] Open
Abstract
Pentatricopeptide repeat (PPR) proteins are a large family of proteins that act primarily at different posttranscriptional steps of organellar gene expression. We have previously found that the Schizosaccharomyces pombe PPR protein mpal10 interacts with mitochondrial translational activator Mpa1, and both are essential for mitochondrial protein synthesis. However, it is unclear how these two proteins function in mitochondrial protein synthesis in S. pombe. In this study, we further investigated the role of Ppr10 and Mpa1 in mitochondrial protein synthesis. Mitochondrial translational initiation requires two initiation factors, Mti2 and Mti3, which bind to the small subunit of the mitochondrial ribosome (mt-SSU) during the formation of the mitochondrial translational initiation complex. Using sucrose gradient sedimentation analysis, we found that disruption of ppr10, mpa1, or the PPR motifs in Ppr10 impairs the association of Mti2 and Mti3 with the mt-SSU, suggesting that both Ppr10 and Mpa1 may be required for the interaction of Mti2 and Mti3 with the mt-SSU during the assembly of mitochondrial translational initiation complex. Loss of Ppr10 perturbs the association of mitochondrially encoded cytochrome b (cob1) and cytochrome c oxidase subunit 1 (cox1) mRNAs with assembled mitochondrial ribosomes. Proteomic analysis revealed that a fraction of Ppr10 and Mpa1 copurified with a subset of mitoribosomal proteins. The PPR motifs of Ppr10 are necessary for its interaction with Mpa1 and that disruption of these PPR motifs impairs mitochondrial protein synthesis. Our results suggest that Ppr10 and Mpa1 function together to mediate mitochondrial translational initiation.
Collapse
Affiliation(s)
- Ying Luo
- Jiangsu Key Laboratory for Microbes and Genomics, School of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Yirong Wang
- Jiangsu Key Laboratory for Microbes and Genomics, School of Life Sciences, Nanjing Normal University, Nanjing, China
| | - Ying Huang
- Jiangsu Key Laboratory for Microbes and Genomics, School of Life Sciences, Nanjing Normal University, Nanjing, China.
| |
Collapse
|
31
|
Aretz I, Jakubke C, Osman C. Power to the daughters - mitochondrial and mtDNA transmission during cell division. Biol Chem 2021; 401:533-546. [PMID: 31812944 DOI: 10.1515/hsz-2019-0337] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/08/2019] [Indexed: 11/15/2022]
Abstract
Mitochondria supply virtually all eukaryotic cells with energy through ATP production by oxidative phosphoryplation (OXPHOS). Accordingly, maintenance of mitochondrial function is fundamentally important to sustain cellular health and various diseases have been linked to mitochondrial dysfunction. Biogenesis of OXPHOS complexes crucially depends on mitochondrial DNA (mtDNA) that encodes essential subunits of the respiratory chain and is distributed in multiple copies throughout the mitochondrial network. During cell division, mitochondria, including mtDNA, need to be accurately apportioned to daughter cells. This process requires an intimate and coordinated interplay between the cell cycle, mitochondrial dynamics and the replication and distribution of mtDNA. Recent years have seen exciting advances in the elucidation of the mechanisms that facilitate these processes and essential key players have been identified. Moreover, segregation of qualitatively distinct mitochondria during asymmetric cell division is emerging as an important quality control step, which secures the maintenance of a healthy cell population.
Collapse
Affiliation(s)
- Ina Aretz
- Department of Biology II, Ludwig-Maximilians-University Munich, Großhaderner Str. 2, 82152Planegg-Martinsried, Germany
| | - Christopher Jakubke
- Department of Biology II, Ludwig-Maximilians-University Munich, Großhaderner Str. 2, 82152Planegg-Martinsried, Germany
| | - Christof Osman
- Department of Biology II, Ludwig-Maximilians-University Munich, Großhaderner Str. 2, 82152Planegg-Martinsried, Germany
| |
Collapse
|
32
|
Gonzalez-Franquesa A, Stocks B, Chubanava S, Hattel HB, Moreno-Justicia R, Peijs L, Treebak JT, Zierath JR, Deshmukh AS. Mass-spectrometry-based proteomics reveals mitochondrial supercomplexome plasticity. Cell Rep 2021; 35:109180. [PMID: 34038727 DOI: 10.1016/j.celrep.2021.109180] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2021] [Revised: 01/29/2021] [Accepted: 05/04/2021] [Indexed: 11/26/2022] Open
Abstract
Mitochondrial respiratory complex subunits assemble in supercomplexes. Studies of supercomplexes have typically relied upon antibody-based quantification, often limited to a single subunit per respiratory complex. To provide a deeper insight into mitochondrial and supercomplex plasticity, we combine native electrophoresis and mass spectrometry to determine the supercomplexome of skeletal muscle from sedentary and exercise-trained mice. We quantify 422 mitochondrial proteins within 10 supercomplex bands in which we show the debated presence of complexes II and V. Exercise-induced mitochondrial biogenesis results in non-stoichiometric changes in subunits and incorporation into supercomplexes. We uncover the dynamics of supercomplex-related assembly proteins and mtDNA-encoded subunits after exercise. Furthermore, exercise affects the complexing of Lactb, an obesity-associated mitochondrial protein, and ubiquinone biosynthesis proteins. Knockdown of ubiquinone biosynthesis proteins leads to alterations in mitochondrial respiration. Our approach can be applied to broad biological systems. In this instance, comprehensively analyzing respiratory supercomplexes illuminates previously undetectable complexity in mitochondrial plasticity.
Collapse
Affiliation(s)
- Alba Gonzalez-Franquesa
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen 2200, Denmark
| | - Ben Stocks
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen 2200, Denmark
| | - Sabina Chubanava
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen 2200, Denmark
| | - Helle B Hattel
- Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Copenhagen 2200, Denmark
| | - Roger Moreno-Justicia
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen 2200, Denmark
| | - Lone Peijs
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen 2200, Denmark
| | - Jonas T Treebak
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen 2200, Denmark
| | - Juleen R Zierath
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen 2200, Denmark; Department of Physiology and Pharmacology, Karolinska Institutet, Stockholm 17177, Sweden; Department of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm 17177, Sweden
| | - Atul S Deshmukh
- Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Copenhagen 2200, Denmark; Novo Nordisk Foundation Center for Protein Research, University of Copenhagen, Copenhagen 2200, Denmark.
| |
Collapse
|
33
|
Chiu CF, Chang HY, Huang CY, Mau CZ, Kuo TT, Lee HC, Huang SY. Betulinic Acid Affects the Energy-Related Proteomic Profiling in Pancreatic Ductal Adenocarcinoma Cells. Molecules 2021; 26:molecules26092482. [PMID: 33923185 PMCID: PMC8123215 DOI: 10.3390/molecules26092482] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2021] [Revised: 04/21/2021] [Accepted: 04/21/2021] [Indexed: 01/14/2023] Open
Abstract
Pancreatic ductal adenocarcinoma (PDAC) is an aggressive disease with a 5-year survival rate of <8%. Therefore, finding new treatment strategies against PDAC cells is an imperative issue. Betulinic acid (BA), a plant-derived natural compound, has shown great potential to combat cancer owing to its versatile physiological functions. In this study, we observed the impacts of BA on the cell viability and migratory ability of PDAC cell lines, and screened differentially expressed proteins (DEPs) by an LC-MS/MS-based proteomics analysis. Our results showed that BA significantly inhibited the viability and migratory ability of PDAC cells under a relatively low dosage without affecting normal pancreatic cells. Moreover, a functional analysis revealed that BA-induced downregulation of protein clusters that participate in mitochondrial complex 1 activity and oxidative phosphorylation, which was related to decreased expressions of RNA polymerase mitochondrial (POLRMT) and translational activator of cytochrome c oxidase (TACO1), suggesting that the influence on mitochondrial function explains the effect of BA on PDAC cell growth and migration. In addition, BA also dramatically increased Apolipoprotein A1 (APOA1) expression and decreased NLR family CARD domain-containing protein 4 (NLRC4) expression, which may be involved in the dampening of PDAC migration. Notably, altered expression patterns of APOA1 and NLRC4 indicated a favorable clinical prognosis of PDAC. Based on these findings, we identified potential proteins and pathways regulated by BA from a proteomics perspective, which provides a therapeutic window for PDAC.
Collapse
Affiliation(s)
- Ching-Feng Chiu
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan; (C.-F.C.); (H.-Y.C.); (C.-Z.M.)
- Nutrition Research Center, Taipei Medical University Hospital, Taipei 11031, Taiwan
- TMU Research Center of Cancer Translational Medicine, Taipei Medical University, Taipei 11031, Taiwan
| | - Hsin-Yi Chang
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan; (C.-F.C.); (H.-Y.C.); (C.-Z.M.)
- Graduate Institute of Cancer Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University, Taipei 11031, Taiwan
- Master Program in Clinical Pharmacogenomics and Pharmacoproteomics, College of Pharmacy, Taipei Medical University, Taipei 11031, Taiwan
| | - Chun-Yine Huang
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan;
| | - Chen-Zou Mau
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan; (C.-F.C.); (H.-Y.C.); (C.-Z.M.)
| | - Tzu-Ting Kuo
- Ph.D. Program for Cancer Molecular Biology and Drug Discovery, College of Medical Science and Technology, Taipei Medical University and Academia Sinica, Taipei 11031, Taiwan;
| | - Hsiu-Chuan Lee
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan;
- Correspondence: (H.-C.L.); (S.-Y.H.)
| | - Shih-Yi Huang
- Graduate Institute of Metabolism and Obesity Sciences, Taipei Medical University, Taipei 11031, Taiwan; (C.-F.C.); (H.-Y.C.); (C.-Z.M.)
- Nutrition Research Center, Taipei Medical University Hospital, Taipei 11031, Taiwan
- School of Nutrition and Health Sciences, Taipei Medical University, Taipei 11031, Taiwan;
- Correspondence: (H.-C.L.); (S.-Y.H.)
| |
Collapse
|
34
|
Sferruzza G, Del Bondio A, Citterio A, Vezzulli P, Guerrieri S, Radaelli M, Martinelli Boneschi F, Filippi M, Maltecca F, Bassi MT, Scarlato M. U-Fiber Leukoencephalopathy Due to a Novel Mutation in the TACO1 Gene. NEUROLOGY-GENETICS 2021; 7:e573. [PMID: 33709035 PMCID: PMC7943219 DOI: 10.1212/nxg.0000000000000573] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2020] [Accepted: 01/12/2021] [Indexed: 11/30/2022]
Affiliation(s)
- Giacomo Sferruzza
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| | - Andrea Del Bondio
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| | - Andrea Citterio
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| | - Paolo Vezzulli
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| | - Simone Guerrieri
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| | - Marta Radaelli
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| | - Filippo Martinelli Boneschi
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| | - Massimo Filippi
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| | - Francesca Maltecca
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| | - Maria Teresa Bassi
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| | - Marina Scarlato
- Department of Neurology (G.S., S.G., M.F., M.S.), and Mitochondrial Dysfunctions in Neurodegeneration Unit (A.D.B., F.M.), Division of Neuroscience, IRCCS San Raffaele Scientific Institute, Milan; Laboratory of Molecular Biology (A.C., M.T.B.), Scientific Institute IRCCS E. Medea, Bosisio Parini, Lecco; Department of Neuroradiology (P.V.), IRCCS San Raffaele Scientific Institute, Milan; Department of Neurology (M.R.), Papa Giovanni XXIII, Bergamo; Dino Ferrari Centre (F.M.B.), Neuroscience Section, Department of Pathophysiology and Transplantation (DEPT), University of Milan; and Fondazione IRCCS Ca' Granda Ospedale Maggiore Policlinico (F.M.B.), Neurology Unit and Multiple Sclerosis Center, Milan, Italy
| |
Collapse
|
35
|
Oktay Y, Güngör S, Zeltner L, Wiethoff S, Schöls L, Sonmezler E, Yilmaz E, Munro B, Bender B, Kernstock C, Kaemereit S, Liepelt I, Töpf A, Yis U, Laurie S, Yaramis A, Zuchner S, Hiz S, Lochmüller H, Schüle R, Horvath R. Confirmation of TACO1 as a Leigh Syndrome Disease Gene in Two Additional Families. J Neuromuscul Dis 2021; 7:301-308. [PMID: 32444556 PMCID: PMC7458500 DOI: 10.3233/jnd-200510] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Background: In 2009, we identified TACO1 as a novel mitochondrial disease gene in a single family, however no second family has been described to confirm the role of TACO1 in mitochondrial disease. Objective: In this report, we describe two independent consanguineous families carrying pathogenic variants in TACO1, confirming the phenotype. Methods: Detailed clinical investigations and whole exome sequencing with haplotype analysis have been performed in several members of the two reported families. Results: Clinical phenotype of the patients confirms the originally reported phenotype of a childhood-onset progressive cerebellar and pyramidal syndrome with optic atrophy and learning difficulties. Brain MRI showed periventricular white matter lesions with multiple cystic defects, suggesting leukoencephalopathy in both patients. One patient carried the previously described homozygous TACO1 variant (p.His158ProfsTer8) and haplotype analysis suggested that this variant is a rare founder mutation. The second patient from another family carried a homozygous novel frame shift variant (p.Cys85PhefsTer15). Conclusions: The identification of two Turkish families with similar characteristic clinical presentation and an additional homozygous nonsense mutation confirms that TACO1 is a human mitochondrial disease gene. Although most patients with this clinical presentation undergo next generation sequencing analysis, screening for selected founder mutations in the Turkish population based on the precise clinical presentation may reduce time and cost of finding the genetic diagnosis even in the era of massively parallel sequencing.
Collapse
Affiliation(s)
- Yavuz Oktay
- Izmir Biomedicine and Genome Center, Dokuz Eylul University Health Campus, Izmir, Turkey.,Izmir International Biomedicine and Genome Institute, Dokuz Eylul University, Izmir, Turkey
| | - Serdal Güngör
- Inonu University, Faculty of Medicine, Turgut Ozal Research Center, Department of Paediatric Neurology, Malatya, Turkey
| | - Lena Zeltner
- Department of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, Tübingen, Germany
| | - Sarah Wiethoff
- Department of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, Tübingen, Germany
| | - Ludger Schöls
- Department of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, Tübingen, Germany.,German Center for Neurodegenerative Diseases (DZNE), University of Tübingen, Tübingen, Germany
| | - Ece Sonmezler
- Izmir Biomedicine and Genome Center, Dokuz Eylul University Health Campus, Izmir, Turkey.,Izmir International Biomedicine and Genome Institute, Dokuz Eylul University, Izmir, Turkey
| | - Elmasnur Yilmaz
- Izmir Biomedicine and Genome Center, Dokuz Eylul University Health Campus, Izmir, Turkey.,Izmir International Biomedicine and Genome Institute, Dokuz Eylul University, Izmir, Turkey
| | - Benjamin Munro
- Department of Clinical Neurosciences, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, UK
| | - Benjamin Bender
- Diagnostic and Interventional Neuroradiology, Radiologic Clinics, University of Tübingen, Tübingen, Germany
| | - Christoph Kernstock
- Centre for Ophthalmology, University Eye Hospital Tübingen, University of Tübingen, Tübingen, Germany
| | - Sofie Kaemereit
- Department of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, Tübingen, Germany
| | - Inga Liepelt
- Department of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, Tübingen, Germany.,German Center for Neurodegenerative Diseases (DZNE), University of Tübingen, Tübingen, Germany
| | - Ana Töpf
- John Waltom Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University, Newcastle upon Tyne, UK
| | - Uluc Yis
- Dokuz Eylul University, School of Medicine, Department of Paediatric Neurology, Izmir, Turkey
| | - Steven Laurie
- CNAG-CRG, Centre for Genomic Regulation, Barcelona Institute of Science and Technology, Barcelona, Spain
| | - Ahmet Yaramis
- Pediatric Neurology Clinic, Private Office, Diyarbakir, Turkey
| | - Stephan Zuchner
- Department of Human Genetics and Hussman Institute for Human Genomics, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Semra Hiz
- Izmir Biomedicine and Genome Center, Dokuz Eylul University Health Campus, Izmir, Turkey.,Dokuz Eylul University, School of Medicine, Department of Paediatric Neurology, Izmir, Turkey
| | - Hanns Lochmüller
- CNAG-CRG, Centre for Genomic Regulation, Barcelona Institute of Science and Technology, Barcelona, Spain.,Department of Neuropediatrics and Muscle Disorders, Medical Center-University of Freiburg, Faculty of Medicine, Freiburg, Germany.,Children's Hospital of Eastern Ontario Research Institute; Division of Neurology, Department of Medicine, The Ottawa Hospital; and Brain and Mind Research Institute, University of Ottawa, Canada
| | - Rebecca Schüle
- Department of Neurodegenerative Diseases, Hertie-Institute for Clinical Brain Research and Center of Neurology, University of Tübingen, Tübingen, Germany.,German Center for Neurodegenerative Diseases (DZNE), University of Tübingen, Tübingen, Germany
| | - Rita Horvath
- Department of Clinical Neurosciences, University of Cambridge School of Clinical Medicine, Cambridge Biomedical Campus, Cambridge, UK
| |
Collapse
|
36
|
Blackout in the powerhouse: clinical phenotypes associated with defects in the assembly of OXPHOS complexes and the mitoribosome. Biochem J 2021; 477:4085-4132. [PMID: 33151299 PMCID: PMC7657662 DOI: 10.1042/bcj20190767] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 09/29/2020] [Accepted: 10/05/2020] [Indexed: 12/26/2022]
Abstract
Mitochondria produce the bulk of the energy used by almost all eukaryotic cells through oxidative phosphorylation (OXPHOS) which occurs on the four complexes of the respiratory chain and the F1–F0 ATPase. Mitochondrial diseases are a heterogenous group of conditions affecting OXPHOS, either directly through mutation of genes encoding subunits of OXPHOS complexes, or indirectly through mutations in genes encoding proteins supporting this process. These include proteins that promote assembly of the OXPHOS complexes, the post-translational modification of subunits, insertion of cofactors or indeed subunit synthesis. The latter is important for all 13 of the proteins encoded by human mitochondrial DNA, which are synthesised on mitochondrial ribosomes. Together the five OXPHOS complexes and the mitochondrial ribosome are comprised of more than 160 subunits and many more proteins support their biogenesis. Mutations in both nuclear and mitochondrial genes encoding these proteins have been reported to cause mitochondrial disease, many leading to defective complex assembly with the severity of the assembly defect reflecting the severity of the disease. This review aims to act as an interface between the clinical and basic research underpinning our knowledge of OXPHOS complex and ribosome assembly, and the dysfunction of this process in mitochondrial disease.
Collapse
|
37
|
Mechanisms and regulation of protein synthesis in mitochondria. Nat Rev Mol Cell Biol 2021; 22:307-325. [PMID: 33594280 DOI: 10.1038/s41580-021-00332-2] [Citation(s) in RCA: 154] [Impact Index Per Article: 51.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2021] [Indexed: 02/06/2023]
Abstract
Mitochondria are cellular organelles responsible for generation of chemical energy in the process called oxidative phosphorylation. They originate from a bacterial ancestor and maintain their own genome, which is expressed by designated, mitochondrial transcription and translation machineries that differ from those operating for nuclear gene expression. In particular, the mitochondrial protein synthesis machinery is structurally and functionally very different from that governing eukaryotic, cytosolic translation. Despite harbouring their own genetic information, mitochondria are far from being independent of the rest of the cell and, conversely, cellular fitness is closely linked to mitochondrial function. Mitochondria depend heavily on the import of nuclear-encoded proteins for gene expression and function, and hence engage in extensive inter-compartmental crosstalk to regulate their proteome. This connectivity allows mitochondria to adapt to changes in cellular conditions and also mediates responses to stress and mitochondrial dysfunction. With a focus on mammals and yeast, we review fundamental insights that have been made into the biogenesis, architecture and mechanisms of the mitochondrial translation apparatus in the past years owing to the emergence of numerous near-atomic structures and a considerable amount of biochemical work. Moreover, we discuss how cellular mitochondrial protein expression is regulated, including aspects of mRNA and tRNA maturation and stability, roles of auxiliary factors, such as translation regulators, that adapt mitochondrial translation rates, and the importance of inter-compartmental crosstalk with nuclear gene expression and cytosolic translation and how it enables integration of mitochondrial translation into the cellular context.
Collapse
|
38
|
Fernandez-Vizarra E, Zeviani M. Mitochondrial disorders of the OXPHOS system. FEBS Lett 2020; 595:1062-1106. [PMID: 33159691 DOI: 10.1002/1873-3468.13995] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 10/21/2020] [Accepted: 11/01/2020] [Indexed: 12/13/2022]
Abstract
Mitochondrial disorders are among the most frequent inborn errors of metabolism, their primary cause being the dysfunction of the oxidative phosphorylation system (OXPHOS). OXPHOS is composed of the electron transport chain (ETC), formed by four multimeric enzymes and two mobile electron carriers, plus an ATP synthase [also called complex V (cV)]. The ETC performs the redox reactions involved in cellular respiration while generating the proton motive force used by cV to synthesize ATP. OXPHOS biogenesis involves multiple steps, starting from the expression of genes encoded in physically separated genomes, namely the mitochondrial and nuclear DNA, to the coordinated assembly of components and cofactors building each individual complex and eventually the supercomplexes. The genetic cause underlying around half of the diagnosed mitochondrial disease cases is currently known. Many of these cases result from pathogenic variants in genes encoding structural subunits or additional factors directly involved in the assembly of the ETC complexes. Here, we review the historical and most recent findings concerning the clinical phenotypes and the molecular pathological mechanisms underlying this particular group of disorders.
Collapse
Affiliation(s)
- Erika Fernandez-Vizarra
- Institute of Molecular, Cell and Systems Biology, College of Medical, Veterinary and Life Sciences, University of Glasgow, UK
| | - Massimo Zeviani
- Venetian Institute of Molecular Medicine, Padova, Italy.,Department of Neurosciences, University of Padova, Italy
| |
Collapse
|
39
|
Cytochrome c oxidase deficiency. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2020; 1862:148335. [PMID: 33171185 DOI: 10.1016/j.bbabio.2020.148335] [Citation(s) in RCA: 57] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 09/10/2020] [Revised: 10/31/2020] [Accepted: 11/03/2020] [Indexed: 12/23/2022]
Abstract
Cytochrome c oxidase (COX) deficiency is characterized by a high degree of genetic and phenotypic heterogeneity, partly reflecting the extreme structural complexity, multiple post-translational modification, variable, tissue-specific composition, and the high number of and intricate connections among the assembly factors of this enzyme. In fact, decreased COX specific activity can manifest with different degrees of severity, affect the whole organism or specific tissues, and develop a wide spectrum of disease natural history, including disease onsets ranging from birth to late adulthood. More than 30 genes have been linked to COX deficiency, but the list is still incomplete and in fact constantly updated. We here discuss the current knowledge about COX in health and disease, focusing on genetic aetiology and link to clinical manifestations. In addition, information concerning either fundamental biological features of the enzymes or biochemical signatures of its defects have been provided by experimental in vivo models, including yeast, fly, mouse and fish, which expanded our knowledge on the functional features and the phenotypical consequences of different forms of COX deficiency.
Collapse
|
40
|
Saneto RP. Mitochondrial diseases: expanding the diagnosis in the era of genetic testing. JOURNAL OF TRANSLATIONAL GENETICS AND GENOMICS 2020; 4:384-428. [PMID: 33426505 PMCID: PMC7791531 DOI: 10.20517/jtgg.2020.40] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Mitochondrial diseases are clinically and genetically heterogeneous. These diseases were initially described a little over three decades ago. Limited diagnostic tools created disease descriptions based on clinical, biochemical analytes, neuroimaging, and muscle biopsy findings. This diagnostic mechanism continued to evolve detection of inherited oxidative phosphorylation disorders and expanded discovery of mitochondrial physiology over the next two decades. Limited genetic testing hampered the definitive diagnostic identification and breadth of diseases. Over the last decade, the development and incorporation of massive parallel sequencing has identified approximately 300 genes involved in mitochondrial disease. Gene testing has enlarged our understanding of how genetic defects lead to cellular dysfunction and disease. These findings have expanded the understanding of how mechanisms of mitochondrial physiology can induce dysfunction and disease, but the complete collection of disease-causing gene variants remains incomplete. This article reviews the developments in disease gene discovery and the incorporation of gene findings with mitochondrial physiology. This understanding is critical to the development of targeted therapies.
Collapse
Affiliation(s)
- Russell P. Saneto
- Center for Integrative Brain Research, Neuroscience Institute, Seattle, WA 98101, USA
- Department of Neurology/Division of Pediatric Neurology, Seattle Children’s Hospital/University of Washington, Seattle, WA 98105, USA
| |
Collapse
|
41
|
Rudler DL, Hughes LA, Viola HM, Hool LC, Rackham O, Filipovska A. Fidelity and coordination of mitochondrial protein synthesis in health and disease. J Physiol 2020; 599:3449-3462. [PMID: 32710561 DOI: 10.1113/jp280359] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Accepted: 07/07/2020] [Indexed: 12/12/2022] Open
Abstract
The evolutionary acquisition of mitochondria has given rise to the diversity of eukaryotic life. Mitochondria have retained their ancestral α-proteobacterial traits through the maintenance of double membranes and their own circular genome. Their genome varies in size from very large in plants to the smallest in animals and their parasites. The mitochondrial genome encodes essential genes for protein synthesis and has to coordinate its expression with the nuclear genome from which it sources most of the proteins required for mitochondrial biogenesis and function. The mitochondrial protein synthesis machinery is unique because it is encoded by both the nuclear and mitochondrial genomes thereby requiring tight regulation to produce the respiratory complexes that drive oxidative phosphorylation for energy production. The fidelity and coordination of mitochondrial protein synthesis are essential for ATP production. Here we compare and contrast the mitochondrial translation mechanisms in mammals and fungi to bacteria and reveal that their diverse regulation can have unusual impacts on the health and disease of these organisms. We highlight that in mammals the rate of protein synthesis is more important than the fidelity of translation, enabling coordinated biogenesis of the mitochondrial respiratory chain with respiratory chain proteins synthesised by cytoplasmic ribosomes. Changes in mitochondrial protein fidelity can trigger the activation of the diverse cellular signalling networks in fungi and mammals to combat dysfunction in energy conservation. The physiological consequences of altered fidelity of protein synthesis can range from liver regeneration to the onset and development of cardiomyopathy.
Collapse
Affiliation(s)
- Danielle L Rudler
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia.,ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia.,Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia
| | - Laetitia A Hughes
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia.,ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia.,Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia
| | - Helena M Viola
- School of Human Sciences, University of Western Australia, 35 Stirling Highway, Nedlands, Western Australia, 6009, Australia
| | - Livia C Hool
- School of Human Sciences, University of Western Australia, 35 Stirling Highway, Nedlands, Western Australia, 6009, Australia.,Victor Chang Cardiac Research Institute, Sydney, NSW, Australia
| | - Oliver Rackham
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia.,ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia.,School of Pharmacy and Biomedical Sciences, Curtin University, Bentley, Western Australia, 6102, Australia.,Curtin Health Innovation Research Institute, Curtin University, Bentley, Western Australia, 6102, Australia.,Telethon Kids Institute, Northern Entrance, Perth Children's Hospital, 15 Hospital Avenue, Nedlands, Western Australia, Australia
| | - Aleksandra Filipovska
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia.,ARC Centre of Excellence in Synthetic Biology, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia.,Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia, 6009, Australia.,Telethon Kids Institute, Northern Entrance, Perth Children's Hospital, 15 Hospital Avenue, Nedlands, Western Australia, Australia.,School of Molecular Sciences, University of Western Australia, Crawley, Western Australia, 6009, Australia
| |
Collapse
|
42
|
Yokokawa T, Mori R, Suga T, Isaka T, Hayashi T, Fujita S. Muscle denervation reduces mitochondrial biogenesis and mitochondrial translation factor expression in mice. Biochem Biophys Res Commun 2020; 527:146-152. [DOI: 10.1016/j.bbrc.2020.04.062] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 04/13/2020] [Indexed: 11/30/2022]
|
43
|
Mitochondrial OXPHOS Biogenesis: Co-Regulation of Protein Synthesis, Import, and Assembly Pathways. Int J Mol Sci 2020; 21:ijms21113820. [PMID: 32481479 PMCID: PMC7312649 DOI: 10.3390/ijms21113820] [Citation(s) in RCA: 69] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/01/2020] [Revised: 05/21/2020] [Accepted: 05/25/2020] [Indexed: 02/07/2023] Open
Abstract
The assembly of mitochondrial oxidative phosphorylation (OXPHOS) complexes is an intricate process, which—given their dual-genetic control—requires tight co-regulation of two evolutionarily distinct gene expression machineries. Moreover, fine-tuning protein synthesis to the nascent assembly of OXPHOS complexes requires regulatory mechanisms such as translational plasticity and translational activators that can coordinate mitochondrial translation with the import of nuclear-encoded mitochondrial proteins. The intricacy of OXPHOS complex biogenesis is further evidenced by the requirement of many tightly orchestrated steps and ancillary factors. Early-stage ancillary chaperones have essential roles in coordinating OXPHOS assembly, whilst late-stage assembly factors—also known as the LYRM (leucine–tyrosine–arginine motif) proteins—together with the mitochondrial acyl carrier protein (ACP)—regulate the incorporation and activation of late-incorporating OXPHOS subunits and/or co-factors. In this review, we describe recent discoveries providing insights into the mechanisms required for optimal OXPHOS biogenesis, including the coordination of mitochondrial gene expression with the availability of nuclear-encoded factors entering via mitochondrial protein import systems.
Collapse
|
44
|
Abstract
Mitochondria are essential organelles in eukaryotes. Most mitochondrial proteins are encoded by the nuclear genome and translated in the cytosol. Nuclear-encoded mitochondrial proteins need to be imported, processed, folded, and assembled into their functional states. To maintain protein homeostasis (proteostasis), mitochondria are equipped with a distinct set of quality control machineries. Deficiencies in such systems lead to mitochondrial dysfunction, which is a hallmark of aging and many human diseases, such as neurodegenerative diseases, cardiovascular diseases, and cancer. In this review, we discuss the unique challenges and solutions of proteostasis in mitochondria. The import machinery coordinates with mitochondrial proteases and chaperones to maintain the mitochondrial proteome. Moreover, mitochondrial proteostasis depends on cytosolic protein quality control mechanisms during crises. In turn, mitochondria facilitate cytosolic proteostasis. Increasing evidence suggests that enhancing mitochondrial proteostasis may hold therapeutic potential to protect against protein aggregation-associated cellular defects.
Collapse
Affiliation(s)
- Linhao Ruan
- Center for Cell Dynamics, Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA; , , , , ,
- Biochemistry, Cellular and Molecular Biology (BCMB) Graduate Program, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Yuhao Wang
- Center for Cell Dynamics, Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA; , , , , ,
- Biochemistry, Cellular and Molecular Biology (BCMB) Graduate Program, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Xi Zhang
- Center for Cell Dynamics, Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA; , , , , ,
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Alexis Tomaszewski
- Center for Cell Dynamics, Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA; , , , , ,
- Biochemistry, Cellular and Molecular Biology (BCMB) Graduate Program, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Joshua T McNamara
- Center for Cell Dynamics, Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA; , , , , ,
- Biochemistry, Cellular and Molecular Biology (BCMB) Graduate Program, Johns Hopkins University School of Medicine, Baltimore, Maryland 21287, USA
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
| | - Rong Li
- Center for Cell Dynamics, Department of Cell Biology, Johns Hopkins University School of Medicine, Baltimore, Maryland 21205, USA; , , , , ,
- Department of Chemical and Biomolecular Engineering, Whiting School of Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA
| |
Collapse
|
45
|
Ferreira N, Andoniou CE, Perks KL, Ermer JA, Rudler DL, Rossetti G, Periyakaruppiah A, Wong JKY, Rackham O, Noakes PG, Degli-Esposti MA, Filipovska A. Murine cytomegalovirus infection exacerbates complex IV deficiency in a model of mitochondrial disease. PLoS Genet 2020; 16:e1008604. [PMID: 32130224 PMCID: PMC7055822 DOI: 10.1371/journal.pgen.1008604] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2019] [Accepted: 01/10/2020] [Indexed: 11/30/2022] Open
Abstract
The influence of environmental insults on the onset and progression of mitochondrial diseases is unknown. To evaluate the effects of infection on mitochondrial disease we used a mouse model of Leigh Syndrome, where a missense mutation in the Taco1 gene results in the loss of the translation activator of cytochrome c oxidase subunit I (TACO1) protein. The mutation leads to an isolated complex IV deficiency that mimics the disease pathology observed in human patients with TACO1 mutations. We infected Taco1 mutant and wild-type mice with a murine cytomegalovirus and show that a common viral infection exacerbates the complex IV deficiency in a tissue-specific manner. We identified changes in neuromuscular morphology and tissue-specific regulation of the mammalian target of rapamycin pathway in response to viral infection. Taken together, we report for the first time that a common stress condition, such as viral infection, can exacerbate mitochondrial dysfunction in a genetic model of mitochondrial disease. Mitochondrial diseases are the most commonly inherited metabolic disorders that are heterogenic and have varied disease onset and progression. Acquired infections and the associated inflammatory responses are known triggers for mitochondrial disease in the clinic and can cause progressive deterioration in patients with mitochondrial disease. Knowledge of how an infection causes and contributes to the progression of mitochondrial disease is completely lacking and has never before been investigated. Here we examined the effects of a viral infection in a model of energy dysfunction and identified that cytomegalovirus can worsen the progression of mitochondrial disease symptoms.
Collapse
Affiliation(s)
- Nicola Ferreira
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia
- Centre for Medical Research, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Christopher E. Andoniou
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Perth, Western Australia, Australia
| | - Kara L. Perks
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia
- Centre for Medical Research, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Judith A. Ermer
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia
- Centre for Medical Research, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Danielle L. Rudler
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia
- Centre for Medical Research, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Giulia Rossetti
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia
- Centre for Medical Research, The University of Western Australia, Nedlands, Western Australia, Australia
| | - Ambika Periyakaruppiah
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland, Australia
| | - Jamie K. Y. Wong
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland, Australia
| | - Oliver Rackham
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia
- School of Pharmacy and Biomedical Sciences, Curtin University, Bentley, Western Australia, Australia
- Curtin Health Innovation Research Institute, Curtin University, Bentley, Western Australia, Australia
- Telethon Kids Institute, QEII Medical Centre, Nedlands, Western Australia, Australia
| | - Peter G. Noakes
- School of Biomedical Sciences, The University of Queensland, St. Lucia, Queensland, Australia
- Queensland Brain Institute, The University of Queensland, St. Lucia, Queensland, Australia
| | - Mariapia A. Degli-Esposti
- Infection and Immunity Program and Department of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, Victoria, Australia
- Centre for Experimental Immunology, Lions Eye Institute, Perth, Western Australia, Australia
| | - Aleksandra Filipovska
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia, Australia
- Centre for Medical Research, The University of Western Australia, Nedlands, Western Australia, Australia
- Telethon Kids Institute, QEII Medical Centre, Nedlands, Western Australia, Australia
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia, Australia
- * E-mail:
| |
Collapse
|
46
|
Salvatori R, Kehrein K, Singh AP, Aftab W, Möller-Hergt BV, Forne I, Imhof A, Ott M. Molecular Wiring of a Mitochondrial Translational Feedback Loop. Mol Cell 2020; 77:887-900.e5. [DOI: 10.1016/j.molcel.2019.11.019] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2019] [Revised: 09/03/2019] [Accepted: 11/25/2019] [Indexed: 11/16/2022]
|
47
|
Ferreira N, Perks KL, Rossetti G, Rudler DL, Hughes LA, Ermer JA, Scott LH, Kuznetsova I, Richman TR, Narayana VK, Abudulai LN, Shearwood AJ, Cserne Szappanos H, Tull D, Yeoh GC, Hool LC, Filipovska A, Rackham O. Stress signaling and cellular proliferation reverse the effects of mitochondrial mistranslation. EMBO J 2019; 38:e102155. [PMID: 31721250 PMCID: PMC6912024 DOI: 10.15252/embj.2019102155] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 09/17/2019] [Accepted: 09/20/2019] [Indexed: 12/12/2022] Open
Abstract
Translation fidelity is crucial for prokaryotes and eukaryotic nuclear-encoded proteins; however, little is known about the role of mistranslation in mitochondria and its potential effects on metabolism. We generated yeast and mouse models with error-prone and hyper-accurate mitochondrial translation, and found that translation rate is more important than translational accuracy for cell function in mammals. Specifically, we found that mitochondrial mistranslation causes reduced overall mitochondrial translation and respiratory complex assembly rates. In mammals, this effect is compensated for by increased mitochondrial protein stability and upregulation of the citric acid cycle. Moreover, this induced mitochondrial stress signaling, which enables the recovery of mitochondrial translation via mitochondrial biogenesis, telomerase expression, and cell proliferation, and thereby normalizes metabolism. Conversely, we show that increased fidelity of mitochondrial translation reduces the rate of protein synthesis without eliciting a mitochondrial stress response. Consequently, the rate of translation cannot be recovered and this leads to dilated cardiomyopathy in mice. In summary, our findings reveal mammalian-specific signaling pathways that respond to changes in the fidelity of mitochondrial protein synthesis and affect metabolism.
Collapse
Affiliation(s)
- Nicola Ferreira
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
| | - Kara L Perks
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
| | - Giulia Rossetti
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
| | - Danielle L Rudler
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
| | - Laetitia A Hughes
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
| | - Judith A Ermer
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
| | - Louis H Scott
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
| | - Irina Kuznetsova
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
| | - Tara R Richman
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
| | - Vinod K Narayana
- Metabolomics AustraliaBio21 Institute of Molecular Science and BiotechnologyUniversity of MelbourneParkvilleVic.Australia
| | - Laila N Abudulai
- Centre for Microscopy, Characterisation and AnalysisThe University of Western AustraliaPerthWAAustralia
- School of Molecular SciencesThe University of Western Australia, CrawleyWAAustralia
- The School of Biomedical SciencesThe University of Western AustraliaNedlandsWAAustralia
| | - Anne‐Marie J Shearwood
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
| | | | - Dedreia Tull
- Metabolomics AustraliaBio21 Institute of Molecular Science and BiotechnologyUniversity of MelbourneParkvilleVic.Australia
| | - George C Yeoh
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
| | - Livia C Hool
- School of Human Sciences (Physiology)The University of Western AustraliaCrawleyWAAustralia
- Victor Chang Cardiac Research InstituteDarlinghurstNSWAustralia
| | - Aleksandra Filipovska
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- The University of Western Australia Centre for Medical ResearchCrawleyWAAustralia
- School of Molecular SciencesThe University of Western Australia, CrawleyWAAustralia
| | - Oliver Rackham
- Harry Perkins Institute of Medical ResearchNedlandsWAAustralia
- School of Pharmacy and Biomedical SciencesCurtin UniversityBentleyWAAustralia
- Curtin Health Innovation Research InstituteCurtin UniversityBentleyWAAustralia
| |
Collapse
|
48
|
Rudler DL, Hughes LA, Perks KL, Richman TR, Kuznetsova I, Ermer JA, Abudulai LN, Shearwood AMJ, Viola HM, Hool LC, Siira SJ, Rackham O, Filipovska A. Fidelity of translation initiation is required for coordinated respiratory complex assembly. SCIENCE ADVANCES 2019; 5:eaay2118. [PMID: 31903419 PMCID: PMC6924987 DOI: 10.1126/sciadv.aay2118] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/29/2019] [Accepted: 10/30/2019] [Indexed: 05/22/2023]
Abstract
Mammalian mitochondrial ribosomes are unique molecular machines that translate 11 leaderless mRNAs; however, it is not clear how mitoribosomes initiate translation, since mitochondrial mRNAs lack untranslated regions. Mitochondrial translation initiation shares similarities with prokaryotes, such as the formation of a ternary complex of fMet-tRNAMet, mRNA and the 28S subunit, but differs in the requirements for initiation factors. Mitochondria have two initiation factors: MTIF2, which closes the decoding center and stabilizes the binding of the fMet-tRNAMet to the leaderless mRNAs, and MTIF3, whose role is not clear. We show that MTIF3 is essential for survival and that heart- and skeletal muscle-specific loss of MTIF3 causes cardiomyopathy. We identify increased but uncoordinated mitochondrial protein synthesis in mice lacking MTIF3, resulting in loss of specific respiratory complexes. Ribosome profiling shows that MTIF3 is required for recognition and regulation of translation initiation of mitochondrial mRNAs and for coordinated assembly of OXPHOS complexes in vivo.
Collapse
Affiliation(s)
- Danielle L. Rudler
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Laetitia A. Hughes
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Kara L. Perks
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Tara R. Richman
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Irina Kuznetsova
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Judith A. Ermer
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Laila N. Abudulai
- Centre for Microscopy, Characterisation and Analysis and School of Biomedical Sciences, The University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Anne-Marie J. Shearwood
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Helena M. Viola
- School of Human Sciences (Physiology), The University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Livia C. Hool
- School of Human Sciences (Physiology), The University of Western Australia, Crawley, Western Australia 6009, Australia
- Victor Chang Cardiac Research Institute, Darlinghurst, New South Wales 2010, Australia
| | - Stefan J. Siira
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
| | - Oliver Rackham
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- School of Pharmacy and Biomedical Sciences, Curtin University, Bentley, Western Australia 6102, Australia
- Curtin Health Innovation Research Institute, Curtin University, Bentley, Western Australia 6102, Australia
| | - Aleksandra Filipovska
- Harry Perkins Institute of Medical Research, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- Centre for Medical Research, The University of Western Australia, QEII Medical Centre, Nedlands, Western Australia 6009, Australia
- School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia 6009, Australia
- Corresponding author.
| |
Collapse
|
49
|
Clark DJ, Dhanasekaran SM, Petralia F, Pan J, Song X, Hu Y, da Veiga Leprevost F, Reva B, Lih TSM, Chang HY, Ma W, Huang C, Ricketts CJ, Chen L, Krek A, Li Y, Rykunov D, Li QK, Chen LS, Ozbek U, Vasaikar S, Wu Y, Yoo S, Chowdhury S, Wyczalkowski MA, Ji J, Schnaubelt M, Kong A, Sethuraman S, Avtonomov DM, Ao M, Colaprico A, Cao S, Cho KC, Kalayci S, Ma S, Liu W, Ruggles K, Calinawan A, Gümüş ZH, Geiszler D, Kawaler E, Teo GC, Wen B, Zhang Y, Keegan S, Li K, Chen F, Edwards N, Pierorazio PM, Chen XS, Pavlovich CP, Hakimi AA, Brominski G, Hsieh JJ, Antczak A, Omelchenko T, Lubinski J, Wiznerowicz M, Linehan WM, Kinsinger CR, Thiagarajan M, Boja ES, Mesri M, Hiltke T, Robles AI, Rodriguez H, Qian J, Fenyö D, Zhang B, Ding L, Schadt E, Chinnaiyan AM, Zhang Z, Omenn GS, Cieslik M, Chan DW, Nesvizhskii AI, Wang P, Zhang H. Integrated Proteogenomic Characterization of Clear Cell Renal Cell Carcinoma. Cell 2019; 179:964-983.e31. [PMID: 31675502 PMCID: PMC7331093 DOI: 10.1016/j.cell.2019.10.007] [Citation(s) in RCA: 375] [Impact Index Per Article: 75.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 07/15/2019] [Accepted: 10/07/2019] [Indexed: 02/07/2023]
Abstract
To elucidate the deregulated functional modules that drive clear cell renal cell carcinoma (ccRCC), we performed comprehensive genomic, epigenomic, transcriptomic, proteomic, and phosphoproteomic characterization of treatment-naive ccRCC and paired normal adjacent tissue samples. Genomic analyses identified a distinct molecular subgroup associated with genomic instability. Integration of proteogenomic measurements uniquely identified protein dysregulation of cellular mechanisms impacted by genomic alterations, including oxidative phosphorylation-related metabolism, protein translation processes, and phospho-signaling modules. To assess the degree of immune infiltration in individual tumors, we identified microenvironment cell signatures that delineated four immune-based ccRCC subtypes characterized by distinct cellular pathways. This study reports a large-scale proteogenomic analysis of ccRCC to discern the functional impact of genomic alterations and provides evidence for rational treatment selection stemming from ccRCC pathobiology.
Collapse
Affiliation(s)
- David J Clark
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | | | - Francesca Petralia
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Jianbo Pan
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Xiaoyu Song
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Yingwei Hu
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | | | - Boris Reva
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Tung-Shing M Lih
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Hui-Yin Chang
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Weiping Ma
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Chen Huang
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Christopher J Ricketts
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Lijun Chen
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Azra Krek
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Yize Li
- Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Dmitry Rykunov
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Qing Kay Li
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Lin S Chen
- Department of Public Health Sciences, University of Chicago, Chicago, IL 60637, USA
| | - Umut Ozbek
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Suhas Vasaikar
- Department of Translational Molecular Pathology, MD Anderson Cancer Center, Houston, TX 77030, USA
| | - Yige Wu
- Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Seungyeul Yoo
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Shrabanti Chowdhury
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | | | - Jiayi Ji
- Department of Population Health Science and Policy, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Tisch Cancer Institute, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Michael Schnaubelt
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Andy Kong
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA
| | | | - Dmitry M Avtonomov
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Minghui Ao
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Antonio Colaprico
- Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Song Cao
- Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Kyung-Cho Cho
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Selim Kalayci
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Shiyong Ma
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Wenke Liu
- Institute for Systems Genetics and Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY 10016, USA
| | - Kelly Ruggles
- Department of Medicine, New York University School of Medicine, New York, NY 10016, USA
| | - Anna Calinawan
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Zeynep H Gümüş
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA
| | - Daniel Geiszler
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA
| | - Emily Kawaler
- Institute for Systems Genetics and Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY 10016, USA
| | - Guo Ci Teo
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Bo Wen
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Yuping Zhang
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Sarah Keegan
- Institute for Systems Genetics and Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY 10016, USA
| | - Kai Li
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX 77030, USA
| | - Feng Chen
- Departments of Medicine and Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Nathan Edwards
- Department of Biochemistry and Cellular Biology, Georgetown University, Washington, DC 20007, USA
| | - Phillip M Pierorazio
- Brady Urological Institute and Department of Urology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Xi Steven Chen
- Department of Public Health Sciences, University of Miami Miller School of Medicine, Miami, FL 33136, USA; Sylvester Comprehensive Cancer Center, University of Miami Miller School of Medicine, Miami, FL 33136, USA
| | - Christian P Pavlovich
- Brady Urological Institute and Department of Urology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - A Ari Hakimi
- Department of Surgery, Urology Service, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Gabriel Brominski
- Department of Urology, Poznań University of Medical Sciences, Szwajcarska 3, Poznań 61-285, Poland
| | - James J Hsieh
- Department of Medicine, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Andrzej Antczak
- Department of Urology, Poznań University of Medical Sciences, Szwajcarska 3, Poznań 61-285, Poland
| | - Tatiana Omelchenko
- Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA
| | - Jan Lubinski
- Department of Genetics and Pathology, Pomeranian Medical University, Szczecin 71-252, Poland
| | - Maciej Wiznerowicz
- International Institute for Molecular Oncology, Poznań 60-203, Poland; Poznań University of Medical Sciences, Poznan 60-701, Poland
| | - W Marston Linehan
- Urologic Oncology Branch, Center for Cancer Research, National Cancer Institute, National Institutes of Health, Bethesda, MD 20892, USA
| | - Christopher R Kinsinger
- Office of Cancer Clinical Proteomics Research, National Cancer Institute, Bethesda, MD 20892, USA
| | | | - Emily S Boja
- Office of Cancer Clinical Proteomics Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Mehdi Mesri
- Office of Cancer Clinical Proteomics Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Tara Hiltke
- Office of Cancer Clinical Proteomics Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Ana I Robles
- Office of Cancer Clinical Proteomics Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Henry Rodriguez
- Office of Cancer Clinical Proteomics Research, National Cancer Institute, Bethesda, MD 20892, USA
| | - Jiang Qian
- Department of Ophthalmology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - David Fenyö
- Institute for Systems Genetics and Department of Biochemistry and Molecular Pharmacology, New York University School of Medicine, New York, NY 10016, USA
| | - Bing Zhang
- Lester and Sue Smith Breast Center, Baylor College of Medicine, Houston, TX 77030, USA; Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Li Ding
- Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Eric Schadt
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA; Sema4, Stamford, CT 06902, USA
| | - Arul M Chinnaiyan
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA
| | - Zhen Zhang
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA
| | - Gilbert S Omenn
- Department of Computational Medicine and Bioinformatics, University of Michigan, Ann Arbor, MI 48109, USA; Department of Internal Medicine, Human Genetics, and School of Public Health, University of Michigan, Ann Arbor, MI 48109, USA
| | - Marcin Cieslik
- Department of Pathology, University of Michigan, Ann Arbor, MI 48109, USA.
| | - Daniel W Chan
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA.
| | | | - Pei Wang
- Department of Genetics and Genomic Sciences and Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, New York, NY 10029, USA.
| | - Hui Zhang
- Department of Pathology, Johns Hopkins University, Baltimore, MD 21231, USA.
| |
Collapse
|
50
|
Perks KL, Rossetti G, Kuznetsova I, Hughes LA, Ermer JA, Ferreira N, Busch JD, Rudler DL, Spahr H, Schöndorf T, Shearwood AMJ, Viola HM, Siira SJ, Hool LC, Milenkovic D, Larsson NG, Rackham O, Filipovska A. PTCD1 Is Required for 16S rRNA Maturation Complex Stability and Mitochondrial Ribosome Assembly. Cell Rep 2019; 23:127-142. [PMID: 29617655 DOI: 10.1016/j.celrep.2018.03.033] [Citation(s) in RCA: 47] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 01/31/2018] [Accepted: 03/08/2018] [Indexed: 12/25/2022] Open
Abstract
The regulation of mitochondrial RNA life cycles and their roles in ribosome biogenesis and energy metabolism are not fully understood. We used CRISPR/Cas9 to generate heart- and skeletal-muscle-specific knockout mice of the pentatricopeptide repeat domain protein 1, PTCD1, and show that its loss leads to severe cardiomyopathy and premature death. Our detailed transcriptome-wide and functional analyses of these mice enabled us to identify the molecular role of PTCD1 as a 16S rRNA-binding protein essential for its stability, pseudouridylation, and correct biogenesis of the mitochondrial large ribosomal subunit. We show that impaired mitoribosome biogenesis can have retrograde signaling effects on nuclear gene expression through the transcriptional activation of the mTOR pathway and upregulation of cytoplasmic protein synthesis and pro-survival factors in the absence of mitochondrial translation. Taken together, our data show that impaired assembly of the mitoribosome exerts its consequences via differential regulation of mitochondrial and cytoplasmic protein synthesis.
Collapse
Affiliation(s)
- Kara L Perks
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia
| | - Giulia Rossetti
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia
| | - Irina Kuznetsova
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia
| | - Laetitia A Hughes
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia
| | - Judith A Ermer
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia
| | - Nicola Ferreira
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia
| | - Jakob D Busch
- Department of Mitochondrial Biology, Max Planck Institute for Biology of Ageing, 50931 Cologne, Germany
| | - Danielle L Rudler
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia
| | - Henrik Spahr
- Department of Mitochondrial Biology, Max Planck Institute for Biology of Ageing, 50931 Cologne, Germany
| | - Thomas Schöndorf
- Department of Mitochondrial Biology, Max Planck Institute for Biology of Ageing, 50931 Cologne, Germany
| | - Ann-Marie J Shearwood
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia
| | - Helena M Viola
- School of Human Sciences (Physiology), The University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Stefan J Siira
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia
| | - Livia C Hool
- School of Human Sciences (Physiology), The University of Western Australia, Crawley, Western Australia 6009, Australia; Victor Chang Cardiac Research Institute, Darlinghurst, NSW 2010, Australia
| | - Dusanka Milenkovic
- Department of Mitochondrial Biology, Max Planck Institute for Biology of Ageing, 50931 Cologne, Germany
| | - Nils-Göran Larsson
- Department of Mitochondrial Biology, Max Planck Institute for Biology of Ageing, 50931 Cologne, Germany; Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm 17177, Sweden
| | - Oliver Rackham
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia; School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia 6009, Australia
| | - Aleksandra Filipovska
- Harry Perkins Institute of Medical Research, Centre for Medical Research, QEII Medical Centre, The University of Western Australia, Nedlands, Western Australia 6009, Australia; School of Molecular Sciences, The University of Western Australia, Crawley, Western Australia 6009, Australia.
| |
Collapse
|