1
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van Karnebeek CDM, Tarailo-Graovac M, Leen R, Meinsma R, Correard S, Jansen-Meijer J, Prykhozhij SV, Pena IA, Ban K, Schock S, Saxena V, Pras-Raves ML, Drögemöller BI, Grootemaat AE, van der Wel NN, Dobritzsch D, Roseboom W, Schomakers BV, Jaspers YRJ, Zoetekouw L, Roelofsen J, Ferreira CR, van der Lee R, Ross CJ, Kochan J, McIntyre RL, van Klinken JB, van Weeghel M, Kramer G, Weschke B, Labrune P, Willemsen MA, Riva D, Garavaglia B, Moeschler JB, Filiano JJ, Ekker M, Berman JN, Dyment D, Vaz FM, Wasserman WW, Houtkooper RH, van Kuilenburg ABP. CIAO1 and MMS19 deficiency: A lethal neurodegenerative phenotype caused by cytosolic Fe-S cluster protein assembly disorders. Genet Med 2024; 26:101104. [PMID: 38411040 DOI: 10.1016/j.gim.2024.101104] [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: 07/25/2023] [Revised: 02/20/2024] [Accepted: 02/22/2024] [Indexed: 02/28/2024] Open
Abstract
PURPOSE The functionality of many cellular proteins depends on cofactors; yet, they have only been implicated in a minority of Mendelian diseases. Here, we describe the first 2 inherited disorders of the cytosolic iron-sulfur protein assembly system. METHODS Genetic testing via genome sequencing was applied to identify the underlying disease cause in 3 patients with microcephaly, congenital brain malformations, progressive developmental and neurologic impairments, recurrent infections, and a fatal outcome. Studies in patient-derived skin fibroblasts and zebrafish models were performed to investigate the biochemical and cellular consequences. RESULTS Metabolic analysis showed elevated uracil and thymine levels in body fluids but no pathogenic variants in DPYD, encoding dihydropyrimidine dehydrogenase. Genome sequencing identified compound heterozygosity in 2 patients for missense variants in CIAO1, encoding cytosolic iron-sulfur assembly component 1, and homozygosity for an in-frame 3-nucleotide deletion in MMS19, encoding the MMS19 homolog, cytosolic iron-sulfur assembly component, in the third patient. Profound alterations in the proteome, metabolome, and lipidome were observed in patient-derived fibroblasts. We confirmed the detrimental effect of deficiencies in CIAO1 and MMS19 in zebrafish models. CONCLUSION A general failure of cytosolic and nuclear iron-sulfur protein maturation caused pleiotropic effects. The critical function of the cytosolic iron-sulfur protein assembly machinery for antiviral host defense may well explain the recurrent severe infections occurring in our patients.
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Affiliation(s)
- Clara D M van Karnebeek
- Amsterdam UMC location University of Amsterdam, Departments of Pediatrics and Human Genetics, Emma Center for Personalized Medicine, Amsterdam, The Netherlands; Emma Center for Personalized Medicine, Amsterdam UMC, Amsterdam, The Netherlands; Departments of Medical Genetics and Pediatrics, Centre for Molecular Medicine and Therapeutics, Faculty of Pharmaceutical Science, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada; United for Metabolic Diseases, Amsterdam, The Netherlands; Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands
| | - Maja Tarailo-Graovac
- Departments of Medical Genetics and Biochemistry & Molecular Biology, Alberta Children's Hospital Research Institute (ACHRI), Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - René Leen
- Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands; Core Facility Metabolomics, Amsterdam UMC, Amsterdam, The Netherlands
| | - Rutger Meinsma
- Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands
| | - Solenne Correard
- Departments of Medical Genetics and Pediatrics, Centre for Molecular Medicine and Therapeutics, Faculty of Pharmaceutical Science, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Judith Jansen-Meijer
- Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands
| | - Sergey V Prykhozhij
- Faculty of Medicine, CHEO Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Izabella A Pena
- The Picower Institute for Learning and Memory, Massachusetts Institute of Technology-MIT, Boston, MA
| | - Kevin Ban
- Faculty of Medicine, CHEO Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Sarah Schock
- Faculty of Medicine, CHEO Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Vishal Saxena
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Mia L Pras-Raves
- Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands; Core Facility Metabolomics, Amsterdam UMC, Amsterdam, The Netherlands
| | - Britt I Drögemöller
- Rady Faculty of Health Sciences, Department of Biochemistry and Medical Genetics, Children's Hospital Research Institute of Manitoba, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Anita E Grootemaat
- Amsterdam UMC Location University of Amsterdam, Department of Medical Biology, Amsterdam, The Netherlands
| | - Nicole N van der Wel
- Amsterdam UMC Location University of Amsterdam, Department of Medical Biology, Amsterdam, The Netherlands
| | - Doreen Dobritzsch
- Uppsala University, Department of Chemistry, Biomedical Center, Uppsala, Sweden
| | - Winfried Roseboom
- Swammerdam Institute for Life Sciences, University of Amsterdam, Laboratory for Mass Spectrometry of Biomolecules, Amsterdam, The Netherlands
| | - Bauke V Schomakers
- Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands; Core Facility Metabolomics, Amsterdam UMC, Amsterdam, The Netherlands
| | - Yorrick R J Jaspers
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands; Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands
| | - Lida Zoetekouw
- Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands
| | - Jeroen Roelofsen
- Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands
| | - Carlos R Ferreira
- National Human Genome Research Institute, National Institutes of Health, Bethesda, MD
| | - Robin van der Lee
- Departments of Medical Genetics and Pediatrics, Centre for Molecular Medicine and Therapeutics, Faculty of Pharmaceutical Science, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Colin J Ross
- Departments of Medical Genetics and Pediatrics, Centre for Molecular Medicine and Therapeutics, Faculty of Pharmaceutical Science, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Jakub Kochan
- Jagiellonian University, Faculty of Biochemistry, Biophysics and Biotechnology, Department of Cell Biochemistry, Kraków, Poland
| | - Rebecca L McIntyre
- Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands
| | - Jan B van Klinken
- Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands; Core Facility Metabolomics, Amsterdam UMC, Amsterdam, The Netherlands; Department of Human Genetics, Leiden University Medical Center, Leiden, The Netherlands
| | - Michel van Weeghel
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands; Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands; Core Facility Metabolomics, Amsterdam UMC, Amsterdam, The Netherlands
| | - Gertjan Kramer
- Swammerdam Institute for Life Sciences, University of Amsterdam, Laboratory for Mass Spectrometry of Biomolecules, Amsterdam, The Netherlands
| | - Bernhard Weschke
- Department of Neuropediatrics, Charité University Medicine Berlin, Berlin, Germany
| | - Philippe Labrune
- APHP-Université Paris-Saclay, Hôpital Antoine Béclère, Centre de Référence Maladies Héréditaires du Métabolisme Hépatique, Service de Pédiatrie, Clamart, and Paris-Saclay University, and INSERM U 1195, Clamart, France
| | - Michèl A Willemsen
- Department of Pediatric Neurology and Donders Institute for Brain, Cognition and Behaviour, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Daria Riva
- Neurogenetic Syndromes and Autism Spectrum Disorders Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy
| | - Barbara Garavaglia
- Medical Genetics and Neurogenetics Unit, Fondazione IRCCS Istituto Neurologico "Carlo Besta," Milan, Italy
| | - John B Moeschler
- Geisel School of Medicine, Dartmouth College and Departments of Pediatrics, Children's Hospital at Dartmouth, Lebanon, NH
| | - James J Filiano
- Geisel School of Medicine, Dartmouth College and Departments of Pediatrics, Children's Hospital at Dartmouth, Lebanon, NH
| | - Marc Ekker
- Department of Biology, University of Ottawa, Ottawa, ON, Canada
| | - Jason N Berman
- Faculty of Medicine, CHEO Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - David Dyment
- Faculty of Medicine, CHEO Research Institute, University of Ottawa, Ottawa, ON, Canada
| | - Frédéric M Vaz
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands; Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands; Core Facility Metabolomics, Amsterdam UMC, Amsterdam, The Netherlands
| | - Wyeth W Wasserman
- Departments of Medical Genetics and Pediatrics, Centre for Molecular Medicine and Therapeutics, Faculty of Pharmaceutical Science, BC Children's Hospital Research Institute, University of British Columbia, Vancouver, BC, Canada
| | - Riekelt H Houtkooper
- Emma Center for Personalized Medicine, Amsterdam UMC, Amsterdam, The Netherlands; Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands; Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands
| | - André B P van Kuilenburg
- Amsterdam Gastroenterology Endocrinology Metabolism, Amsterdam, The Netherlands; Amsterdam UMC location University of Amsterdam, Department of Clinical Chemistry, Laboratory Genetic Metabolic Diseases, Amsterdam, The Netherlands.
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2
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Dutta D, Kanca O, Byeon SK, Marcogliese PC, Zuo Z, Shridharan RV, Park JH, Lin G, Ge M, Heimer G, Kohler JN, Wheeler MT, Kaipparettu BA, Pandey A, Bellen HJ. A defect in mitochondrial fatty acid synthesis impairs iron metabolism and causes elevated ceramide levels. Nat Metab 2023; 5:1595-1614. [PMID: 37653044 PMCID: PMC11151872 DOI: 10.1038/s42255-023-00873-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2022] [Accepted: 07/21/2023] [Indexed: 09/02/2023]
Abstract
In most eukaryotic cells, fatty acid synthesis (FAS) occurs in the cytoplasm and in mitochondria. However, the relative contribution of mitochondrial FAS (mtFAS) to the cellular lipidome is not well defined. Here we show that loss of function of Drosophila mitochondrial enoyl coenzyme A reductase (Mecr), which is the enzyme required for the last step of mtFAS, causes lethality, while neuronal loss of Mecr leads to progressive neurodegeneration. We observe a defect in Fe-S cluster biogenesis and increased iron levels in flies lacking mecr, leading to elevated ceramide levels. Reducing the levels of either iron or ceramide suppresses the neurodegenerative phenotypes, indicating an interplay between ceramide and iron metabolism. Mutations in human MECR cause pediatric-onset neurodegeneration, and we show that human-derived fibroblasts display similar elevated ceramide levels and impaired iron homeostasis. In summary, this study identifies a role of mecr/MECR in ceramide and iron metabolism, providing a mechanistic link between mtFAS and neurodegeneration.
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Affiliation(s)
- Debdeep Dutta
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Oguz Kanca
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Seul Kee Byeon
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
| | - Paul C Marcogliese
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
- Department of Biochemistry & Medical Genetics, University of Manitoba, Winnipeg, Manitoba, Canada
| | - Zhongyuan Zuo
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Rishi V Shridharan
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Jun Hyoung Park
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Guang Lin
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Ming Ge
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA
| | - Gali Heimer
- Pediatric Neurology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Ramat Gan, Israel
- The Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Jennefer N Kohler
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Matthew T Wheeler
- Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA, USA
| | - Benny A Kaipparettu
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Akhilesh Pandey
- Department of Laboratory Medicine and Pathology, Mayo Clinic, Rochester, MN, USA
- Manipal Academy of Higher Education, Manipal, India
| | - Hugo J Bellen
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA.
- Jan and Dan Duncan Neurological Research Institute, Texas Children's Hospital, Houston, TX, USA.
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3
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Monzel AS, Enríquez JA, Picard M. Multifaceted mitochondria: moving mitochondrial science beyond function and dysfunction. Nat Metab 2023; 5:546-562. [PMID: 37100996 PMCID: PMC10427836 DOI: 10.1038/s42255-023-00783-1] [Citation(s) in RCA: 97] [Impact Index Per Article: 97.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 03/10/2023] [Indexed: 04/28/2023]
Abstract
Mitochondria have cell-type specific phenotypes, perform dozens of interconnected functions and undergo dynamic and often reversible physiological recalibrations. Given their multifunctional and malleable nature, the frequently used terms 'mitochondrial function' and 'mitochondrial dysfunction' are misleading misnomers that fail to capture the complexity of mitochondrial biology. To increase the conceptual and experimental specificity in mitochondrial science, we propose a terminology system that distinguishes between (1) cell-dependent properties, (2) molecular features, (3) activities, (4) functions and (5) behaviours. A hierarchical terminology system that accurately captures the multifaceted nature of mitochondria will achieve three important outcomes. It will convey a more holistic picture of mitochondria as we teach the next generations of mitochondrial biologists, maximize progress in the rapidly expanding field of mitochondrial science, and also facilitate synergy with other disciplines. Improving specificity in the language around mitochondrial science is a step towards refining our understanding of the mechanisms by which this unique family of organelles contributes to cellular and organismal health.
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Affiliation(s)
- Anna S Monzel
- Department of Psychiatry, Division of Behavioral Medicine, Columbia University Irving Medical Center, New York, NY, USA
| | - José Antonio Enríquez
- Centro Nacional de Investigaciones Cardiovasculares Carlos III, Madrid, Spain
- CIBER de Fragilidad y Envejecimiento Saludable (CIBERFES), Madrid, Spain
| | - Martin Picard
- Department of Psychiatry, Division of Behavioral Medicine, Columbia University Irving Medical Center, New York, NY, USA.
- Department of Neurology, H. Houston Merritt Center, Columbia Translational Neuroscience Initiative, Columbia University Irving Medical Center, New York, NY, USA.
- New York State Psychiatric Institute, New York, NY, USA.
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4
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Kropp PA, Rogers P, Kelly SE, McWhirter R, Goff WD, Levitan IM, Miller DM, Golden A. Patient-specific variants of NFU1/NFU-1 disrupt cholinergic signaling in a model of multiple mitochondrial dysfunctions syndrome 1. Dis Model Mech 2023; 16:286662. [PMID: 36645076 PMCID: PMC9922734 DOI: 10.1242/dmm.049594] [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: 04/04/2022] [Accepted: 01/05/2023] [Indexed: 01/17/2023] Open
Abstract
Neuromuscular dysfunction is a common feature of mitochondrial diseases and frequently presents as ataxia, spasticity and/or dystonia, all of which can severely impact individuals with mitochondrial diseases. Dystonia is one of the most common symptoms of multiple mitochondrial dysfunctions syndrome 1 (MMDS1), a disease associated with mutations in the causative gene (NFU1) that impair iron-sulfur cluster biogenesis. We have generated Caenorhabditis elegans strains that recreated patient-specific point variants in the C. elegans ortholog (nfu-1) that result in allele-specific dysfunction. Each of these mutants, Gly147Arg and Gly166Cys, have altered acetylcholine signaling at neuromuscular junctions, but opposite effects on activity and motility. We found that the Gly147Arg variant was hypersensitive to acetylcholine and that knockdown of acetylcholine release rescued nearly all neuromuscular phenotypes of this variant. In contrast, we found that the Gly166Cys variant caused predominantly postsynaptic acetylcholine hypersensitivity due to an unclear mechanism. These results are important for understanding the neuromuscular conditions of MMDS1 patients and potential avenues for therapeutic intervention.
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Affiliation(s)
- Peter A Kropp
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA.,Biology Department, Kenyon College, Gambier, OH 43022, USA
| | - Philippa Rogers
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Sydney E Kelly
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - Rebecca McWhirter
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37235, USA
| | - Willow D Goff
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA.,Biology Department, Colgate University, Hamilton, NY 13346, USA
| | - Ian M Levitan
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
| | - David M Miller
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37235, USA.,Neuroscience Graduate Program, Vanderbilt University, Nashville, TN 37235, USA
| | - Andy Golden
- Laboratory of Biochemistry and Genetics, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA
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5
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Kaiyrzhanov R, Zaki MS, Lau T, Sen S, Azizimalamiri R, Zamani M, Sayin GY, Hilander T, Efthymiou S, Chelban V, Brown R, Thompson K, Scarano MI, Ganesh J, Koneev K, Gülaçar IM, Person R, Sadykova D, Maidyrov Y, Seifi T, Zadagali A, Bernard G, Allis K, Elloumi HZ, Lindy A, Taghiabadi E, Verma S, Logan R, Kirmse B, Bai R, Khalaf SM, Abdel‐Hamid MS, Sedaghat A, Shariati G, Issa M, Zeighami J, Elbendary HM, Brown G, Taylor RW, Galehdari H, Gleeson JJ, Carroll CJ, Cowan JA, Moreno‐De‐Luca A, Houlden H, Maroofian R. Phenotypic continuum of NFU1-related disorders. Ann Clin Transl Neurol 2022; 9:2025-2035. [PMID: 36256512 PMCID: PMC9735368 DOI: 10.1002/acn3.51679] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/01/2022] [Revised: 09/28/2022] [Accepted: 09/29/2022] [Indexed: 12/14/2022] Open
Abstract
Bi-allelic variants in Iron-Sulfur Cluster Scaffold (NFU1) have previously been associated with multiple mitochondrial dysfunctions syndrome 1 (MMDS1) characterized by early-onset rapidly fatal leukoencephalopathy. We report 19 affected individuals from 10 independent families with ultra-rare bi-allelic NFU1 missense variants associated with a spectrum of early-onset pure to complex hereditary spastic paraplegia (HSP) phenotype with a longer survival (16/19) on one end and neurodevelopmental delay with severe hypotonia (3/19) on the other. Reversible or irreversible neurological decompensation after a febrile illness was common in the cohort, and there were invariable white matter abnormalities on neuroimaging. The study suggests that MMDS1 and HSP could be the two ends of the NFU1-related phenotypic continuum.
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Affiliation(s)
- Rauan Kaiyrzhanov
- Department of Neuromuscular DisordersUCL Queen Square Institute of NeurologyLondonWC1N 3BGUK
| | - Maha S. Zaki
- Human Genetics and Genome Research Division, Clinical Genetics DepartmentNational Research CentreCairoEgypt
| | - Tracy Lau
- Department of Neuromuscular DisordersUCL Queen Square Institute of NeurologyLondonWC1N 3BGUK
| | - Sambuddha Sen
- Department of Chemistry and BiochemistryThe Ohio State University100 West 18th AvenueColumbusOhio43210USA
| | - Reza Azizimalamiri
- Department of Paediatric Neurology, Golestan, Medical, Educational, and Research CenterAhvaz Jundishapur University of Medical SciencesAhvazIran
| | - Mina Zamani
- Department of Biology, Faculty of ScienceShahid Chamran University of AhvazAhvazIran
| | - Gözde Yeşil Sayin
- Department of Medical Genetics, Istanbul Faculty of MedicineIstanbul UniversityIstanbul34098Turkey
| | - Taru Hilander
- Genetics Section, Molecular and Clinical SciencesSt George's, University of LondonLondonUK
| | - Stephanie Efthymiou
- Department of Neuromuscular DisordersUCL Queen Square Institute of NeurologyLondonWC1N 3BGUK
| | - Viorica Chelban
- Department of Neuromuscular DisordersUCL Queen Square Institute of NeurologyLondonWC1N 3BGUK
| | - Ruth Brown
- Oxford Medical Genetics LaboratoriesThe Churchill HospitalOxfordOX3 7LJUK
| | - Kyle Thompson
- Wellcome Centre for Mitochondrial Research, Translational and Clinical Research InstituteFaculty of Medical Sciences Newcastle UniversityNewcastle upon TyneNE2 4HHUK
| | - Maria Irene Scarano
- Division of Genetics, Cooper Health SystemChildren's Regional HospitalSheridan Pavilion CamdenNew Jersy08103USA
| | - Jaya Ganesh
- Department of Genetics and Genomic SciencesIcahn School of Medicine at Mount SinaiNew YorkNew YorkUSA
| | - Kairgali Koneev
- Department of Neurology and NeurosurgeryAsfendiyarov Kazakh National Medical UniversityAlmaty050000Kazakhstan
| | - Ismail Musab Gülaçar
- Department of Medical Genetics, Istanbul Faculty of MedicineIstanbul UniversityIstanbul34098Turkey
- Department of GeneticsInstitute of Graduate Studies in Health Sciences, Istanbul UniversityIstanbul34098Turkey
| | | | | | - Yerdan Maidyrov
- Department of Neurology and NeurosurgeryAsfendiyarov Kazakh National Medical UniversityAlmaty050000Kazakhstan
| | - Tahereh Seifi
- Department of Biology, Faculty of ScienceShahid Chamran University of AhvazAhvazIran
| | - Aizhan Zadagali
- L.N. Gumilyov Eurasian National UniversityNur‐SultanKazakhstan
| | - Geneviève Bernard
- Departments of Neurology and Neurosurgery, Pediatrics and Human GeneticsMcGill UniversityMontrealCanada
- Division of Medical Genetics, Department Specialized MedicineMcGill University Health CentreMontrealCanada
- Child Health and Human Development ProgramResearch Institute of the McGill University Health CentreMontrealCanada
| | | | | | | | - Ehsan Taghiabadi
- Skin and Stem Cell Research Center, Tehran University of Medical SciencesTehranIran
| | - Sumit Verma
- Department of NeurologyEmory University School of MedicineGeorgiaAtlantaUSA
| | - Rachel Logan
- Division of NeurosciencesChildren's Healthcare of AtlantaAtlantaGeorgiaUSA
| | - Brian Kirmse
- Division of GeneticsUniversity of Mississippi Medical CenterJacksonMississippiUSA
| | | | | | - Mohamed S. Abdel‐Hamid
- Medical Molecular Genetics DepartmentHuman Genetics and Genome Research Institute, National Research CentreCairoEgypt
| | - Alireza Sedaghat
- Health Research Institute, Diabetes Research CenterAhvaz Jundishapur University of Medical SciencesAhvazIran
| | - Gholamreza Shariati
- Department of Medical Genetics, Faculty of MedicineAhvaz Jundishapur University of Medical SciencesAhvazIran
- Narges Medical Genetics and Prenatal Diagnosis LaboratoryEast Mihan Ave., KianparsAhvazIran
| | - Mahmoud Issa
- Human Genetics and Genome Research Division, Clinical Genetics DepartmentNational Research CentreCairoEgypt
| | - Jawaher Zeighami
- Narges Medical Genetics and Prenatal Diagnosis LaboratoryEast Mihan Ave., KianparsAhvazIran
| | - Hasnaa M. Elbendary
- Human Genetics and Genome Research Division, Clinical Genetics DepartmentNational Research CentreCairoEgypt
| | - Garry Brown
- Oxford Medical Genetics LaboratoriesThe Churchill HospitalOxfordOX3 7LJUK
| | - Robert W. Taylor
- Wellcome Centre for Mitochondrial Research, Translational and Clinical Research InstituteFaculty of Medical Sciences Newcastle UniversityNewcastle upon TyneNE2 4HHUK
- NHS Highly Specialised Service for Rare Mitochondrial DisordersNewcastle upon Tyne Hospitals NHS Foundation TrustNewcastle upon TyneNE1 4LPUK
| | - Hamid Galehdari
- Department of Biology, Faculty of ScienceShahid Chamran University of AhvazAhvazIran
| | - Joseph J. Gleeson
- Department of NeurosciencesUniversity of California, San DiegoLa JollaCalifornia92093USA
- Rady Children's Institute for Genomic MedicineSan DiegoCalifornia92025USA
| | - Christopher J. Carroll
- Genetics Section, Molecular and Clinical SciencesSt George's, University of LondonLondonUK
| | - James A. Cowan
- Department of Chemistry and BiochemistryThe Ohio State University100 West 18th AvenueColumbusOhio43210USA
| | - Andres Moreno‐De‐Luca
- Department of RadiologyAutism & Developmental Medicine Institute, Genomic Medicine InstituteGeisingerDanvillePennsylvania17822USA
| | - Henry Houlden
- Department of Neuromuscular DisordersUCL Queen Square Institute of NeurologyLondonWC1N 3BGUK
| | - Reza Maroofian
- Department of Neuromuscular DisordersUCL Queen Square Institute of NeurologyLondonWC1N 3BGUK
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6
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Yang JH, Friederich MW, Ellsworth KA, Frederick A, Foreman E, Malicki D, Dimmock D, Lenberg J, Prasad C, Yu AC, Rupar CA, Hegele RA, Manickam K, Koboldt DC, Crist E, Choi SS, Farhan SM, Harvey H, Sattar S, Karp N, Wong T, Haas R, Van Hove JL, Wigby K. Expanding the phenotypic and molecular spectrum of NFS1-related disorders that cause functional deficiencies in mitochondrial and cytosolic iron-sulfur cluster containing enzymes. Hum Mutat 2022; 43:305-315. [PMID: 35026043 PMCID: PMC8863643 DOI: 10.1002/humu.24330] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2021] [Revised: 12/11/2021] [Accepted: 01/10/2022] [Indexed: 11/11/2022]
Abstract
Iron-sulfur cluster proteins are involved in critical functions for gene expression regulation and mitochondrial bioenergetics including the oxidative phosphorylation system. The c.215G>A p.(Arg72Gln) variant in NFS1 has been previously reported to cause infantile mitochondrial complex II and III deficiency. We describe three additional unrelated patients with the same missense variant. Two infants with the same homozygous variant presented with hypotonia, weakness and lactic acidosis, and one patient with compound heterozygous p.(Arg72Gln) and p.(Arg412His) variants presented as a young adult with gastrointestinal symptoms and fatigue. Skeletal muscle biopsy from patients 1 and 3 showed abnormal mitochondrial morphology, and functional analyses demonstrated decreased activity in respiratory chain complex II and variably in complexes I and III. We found decreased mitochondrial and cytosolic aconitase activities but only mildly affected lipoylation of pyruvate dehydrogenase and 2-oxoglutarate dehydrogenase enzymes. Our studies expand the phenotypic spectrum and provide further evidence for the pathogenicity and functional sequelae of NFS1-related disorders with disturbances in both mitochondrial and cytosolic iron-sulfur cluster containing enzymes.
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Affiliation(s)
- Jennifer H. Yang
- Department of Neurosciences, University of California San Diego, San Diego, CA 92093, USA,Division of Child Neurology, Rady Children’s Hospital, San Diego, CA 92123, USA,These authors contributed equally to this work
| | - Marisa W. Friederich
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, Aurora, CO 80045, USA,Department of Pathology and Laboratory Medicine, Children’s Hospital Colorado, 13121 East 16th Avenue, Aurora, CO 80045, USA,These authors contributed equally to this work
| | | | - Aliya Frederick
- Department of Neurosciences, University of California San Diego, San Diego, CA 92093, USA,Division of Child Neurology, Rady Children’s Hospital, San Diego, CA 92123, USA
| | - Emily Foreman
- Division of Pediatrics, University of California San Diego, San Diego, CA 92093, USA
| | - Denise Malicki
- Department of Pathology, University of California San Diego, San Diego, CA 92093, USA
| | - David Dimmock
- Rady Children’s Institute for Genomic Medicine, San Diego, CA 92123, USA
| | - Jerica Lenberg
- Rady Children’s Institute for Genomic Medicine, San Diego, CA 92123, USA
| | - Chitra Prasad
- Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5C1, Canada,Department of Pediatrics, Division of Medical Genetics, Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5K8, Canada
| | - Andrea C. Yu
- Division of Metabolics and Newborn Screening, Department of Pediatrics, Children’s Hospital of Eastern Ontario, Ottawa, ON, K1H 8L1, Canada
| | - C. Anthony Rupar
- Department of Pathology, London Health Science Centre, London, Ontario N6A 5A5, Canada,London Health Sciences Centre, Children’s Health Research Institute London, Ontario N6C 2V5, Canada
| | - Robert A. Hegele
- Robarts Research Institute, Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5K8, Canada,Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5C1, Canada
| | - Kandamurugu Manickam
- Division of Genetics and Genomics, Nationwide Children’s Hospital, Columbus, OH 43205 USA
| | - Daniel C. Koboldt
- The Institute for Genomic Medicine, Nationwide Children’s Hospital, Columbus, OH 43205, USA
| | - Erin Crist
- The Institute for Genomic Medicine, Nationwide Children’s Hospital, Columbus, OH 43205, USA
| | - Samantha S. Choi
- The Institute for Genomic Medicine, Nationwide Children’s Hospital, Columbus, OH 43205, USA
| | - Sali M.K. Farhan
- Departments of Neurology and Neurosurgery, and Human Genetics, the Montreal Neurological Institute and Hospital, McGill University, 3801 Rue University, Montréal, QC H3A 2B4, Canada
| | - Helen Harvey
- Division of Pediatrics, University of California San Diego, San Diego, CA 92093, USA
| | - Shifteh Sattar
- Department of Neurosciences, University of California San Diego, San Diego, CA 92093, USA,Division of Child Neurology, Rady Children’s Hospital, San Diego, CA 92123, USA
| | - Natalya Karp
- Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5C1, Canada,Department of Pediatrics, Division of Medical Genetics, Schulich School of Medicine and Dentistry, Western University, London, Ontario N6A 5K8, Canada
| | - Terence Wong
- Rady Children’s Institute for Genomic Medicine, San Diego, CA 92123, USA
| | - Richard Haas
- Department of Neurosciences, University of California San Diego, San Diego, CA 92093, USA,Division of Child Neurology, Rady Children’s Hospital, San Diego, CA 92123, USA,These authors contributed equally to this work
| | - Johan L.K. Van Hove
- Department of Pediatrics, Section of Clinical Genetics and Metabolism, University of Colorado, Aurora, CO 80045, USA,Department of Pathology and Laboratory Medicine, Children’s Hospital Colorado, 13121 East 16th Avenue, Aurora, CO 80045, USA,These authors contributed equally to this work
| | - Kristen Wigby
- Rady Children’s Institute for Genomic Medicine, San Diego, CA 92123, USA,Division of Pediatrics, University of California San Diego, San Diego, CA 92093, USA,These authors contributed equally to this work
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GLRX5-associated [Fe-S] cluster biogenesis disorder: further characterisation of the neurological phenotype and long-term outcome. Orphanet J Rare Dis 2021; 16:465. [PMID: 34732213 PMCID: PMC8565018 DOI: 10.1186/s13023-021-02073-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2021] [Accepted: 10/10/2021] [Indexed: 11/11/2022] Open
Abstract
Background Identification and characterisation of monogenic causes of complex neurological phenotypes are important for genetic counselling and prognostication. Bi-allelic pathogenic variants in the gene encoding GLRX5, a protein involved in the early steps of Fe-S cluster biogenesis, are rare and cause two distinct phenotypes: isolated sideroblastic anemia and a neurological phenotype with variant non-ketotic hyperglycinemia. In this study, we analysed the evolution of clinical and MRI findings and long-term outcome of patients with GLRX5 mutations. Methods Four patients from three Australian families of Lebanese descent were identified. All patients presented in childhood and were followed up into adult life through multiple clinical assessments. All were prescribed sodium benzoate. Results All patients (all females, age range 18–56 years) showed a complex neurological phenotype characterised by varying combinations of spastic paraparesis, length-dependent motor/sensory-motor axonal polyneuropathy, and psychiatric disturbances with variable intellectual disability. All had non-ketotic hyperglycinemia and a homozygous pathogenic c.151_153delAAG (p.K51del) change in GLRX5. Motor disability gradually progressed reaching moderate disability during adolescence and moderately severe disability during adult life. The major MRI finding was the upper cervical spinal cord signal changes with contrast enhancement noted in all and additional leukoencephalopathy in one. On follow up MRI, the white matter lesions diminished on a subsequent scan and then remained static over time. The spinal cord showed gliotic changes. Two patients have previously demonstrated low pyruvate dehydrogenase complex deficiency but none had plasma lactate elevation, nor biochemical evidence of branch-chain keto-dehydrogenase deficiency. Glycine levels reduced in patients that tolerated sodium benzoate, possibly stabilising clinical manifestations. Conclusions This report demonstrates that the p.K51del GLRX5 variant causes a distinct and predictable neurological phenotype. The clinical assessments spanning from childhood to adult life enable physicians to infer the natural history of GLRX5 related neurological disorder. There may be widespread metabolic consequences, and optimal management is unknown.
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Selvanathan A, Parayil Sankaran B. Mitochondrial iron-sulfur cluster biogenesis and neurological disorders. Mitochondrion 2021; 62:41-49. [PMID: 34687937 DOI: 10.1016/j.mito.2021.10.004] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Revised: 08/26/2021] [Accepted: 10/18/2021] [Indexed: 12/20/2022]
Abstract
Iron-sulfur clusters (ISCs) are highly conserved moieties embedded into numerous crucial proteins in almost all bacteria, plants and mammals. As such, ISC biosynthesis is critical to cellular function. The pathway was first characterized in bacteria by the late 1990s, and over the subsequent 20 years there has been increasing understanding of its components in humans. Defects in the ISC pathway are now associated with many different human disease states, such as Friedreich ataxia and ISCU myopathy. Whilst the disorders have variable clinical features, most involve neurological phenotypes. There are common biochemical signatures in most of these conditions, as a lack of ISCs causes deficiencies of target proteins including Complex I, II and III, aconitase and lipoic acid. This review focuses on the disorders of ISC biogenesis that have been described in the literature to-date. Key clinical, biochemical and neuroradiological features will be discussed, providing a reference point for clinicians diagnosing and managing these patients. Therapies are mostly supportive at this stage. However, the improved understanding of the pathophysiology of these conditions could pave the way for disease-modifying therapies in the near future.
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Affiliation(s)
- Arthavan Selvanathan
- Genetic Metabolic Disorders Service, The Children's Hospital at Westmead, Locked Bag 4001, Westmead, NSW, Australia
| | - Bindu Parayil Sankaran
- Genetic Metabolic Disorders Service, The Children's Hospital at Westmead, Locked Bag 4001, Westmead, NSW, Australia; Children's Hospital at Westmead Clinical School, Faculty of Medicine and Health, The University of Sydney, Australia.
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9
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Jain A, Singh A, Maio N, Rouault TA. Assembly of the [4Fe-4S] cluster of NFU1 requires the coordinated donation of two [2Fe-2S] clusters from the scaffold proteins, ISCU2 and ISCA1. Hum Mol Genet 2021; 29:3165-3182. [PMID: 32776106 DOI: 10.1093/hmg/ddaa172] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 07/09/2020] [Accepted: 07/29/2020] [Indexed: 02/01/2023] Open
Abstract
NFU1, a late-acting iron-sulfur (Fe-S) cluster carrier protein, has a key role in the pathogenesis of the disease, multiple mitochondrial dysfunctions syndrome. In this work, using genetic and biochemical approaches, we identified the initial scaffold protein, mitochondrial ISCU (ISCU2) and the secondary carrier, ISCA1, as the direct donors of Fe-S clusters to mitochondrial NFU1, which appears to dimerize and reductively mediate the formation of a bridging [4Fe-4S] cluster, aided by ferredoxin 2. By monitoring the abundance of target proteins that acquire their Fe-S clusters from NFU1, we characterized the effects of several novel pathogenic NFU1 mutations. We observed that NFU1 directly interacts with each of the Fe-S cluster scaffold proteins known to ligate [2Fe-2S] clusters, ISCU2 and ISCA1, and we mapped the site of interaction to a conserved hydrophobic patch of residues situated at the end of the C-terminal alpha-helix of NFU1. Furthermore, we showed that NFU1 lost its ability to acquire its Fe-S cluster when mutagenized at the identified site of interaction with ISCU2 and ISCA1, which thereby adversely affected biochemical functions of proteins that are thought to acquire their Fe-S clusters directly from NFU1, such as lipoic acid synthase, which supports the Fe-S-dependent process of lipoylation of components of multiple key enzyme complexes, including pyruvate dehydrogenase, alpha-ketoglutarate dehydrogenase and the glycine cleavage complex.
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Affiliation(s)
- Anshika Jain
- Molecular Medicine Program, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Anamika Singh
- Molecular Medicine Program, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Nunziata Maio
- Molecular Medicine Program, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tracey A Rouault
- Molecular Medicine Program, Eunice Kennedy Shriver National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, MD 20892, USA
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10
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Braymer JJ, Freibert SA, Rakwalska-Bange M, Lill R. Mechanistic concepts of iron-sulfur protein biogenesis in Biology. BIOCHIMICA ET BIOPHYSICA ACTA-MOLECULAR CELL RESEARCH 2020; 1868:118863. [PMID: 33007329 DOI: 10.1016/j.bbamcr.2020.118863] [Citation(s) in RCA: 98] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 09/14/2020] [Accepted: 09/17/2020] [Indexed: 02/08/2023]
Abstract
Iron-sulfur (Fe/S) proteins are present in virtually all living organisms and are involved in numerous cellular processes such as respiration, photosynthesis, metabolic reactions, nitrogen fixation, radical biochemistry, protein synthesis, antiviral defense, and genome maintenance. Their versatile functions may go back to the proposed role of their Fe/S cofactors in the origin of life as efficient catalysts and electron carriers. More than two decades ago, it was discovered that the in vivo synthesis of cellular Fe/S clusters and their integration into polypeptide chains requires assistance by complex proteinaceous machineries, despite the fact that Fe/S proteins can be assembled chemically in vitro. In prokaryotes, three Fe/S protein biogenesis systems are known; ISC, SUF, and the more specialized NIF. The former two systems have been transferred by endosymbiosis from bacteria to mitochondria and plastids, respectively, of eukaryotes. In their cytosol, eukaryotes use the CIA machinery for the biogenesis of cytosolic and nuclear Fe/S proteins. Despite the structural diversity of the protein constituents of these four machineries, general mechanistic concepts underlie the complex process of Fe/S protein biogenesis. This review provides a comprehensive and comparative overview of the various known biogenesis systems in Biology, and summarizes their common or diverging molecular mechanisms, thereby illustrating both the conservation and diverse adaptions of these four machineries during evolution and under different lifestyles. Knowledge of these fundamental biochemical pathways is not only of basic scientific interest, but is important for the understanding of human 'Fe/S diseases' and can be used in biotechnology.
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Affiliation(s)
- Joseph J Braymer
- Institut für Zytobiologie, Philipps-Universität Marburg, Robert-Koch-Str. 6, 35032 Marburg, Germany
| | - Sven A Freibert
- Institut für Zytobiologie, Philipps-Universität Marburg, Robert-Koch-Str. 6, 35032 Marburg, Germany
| | | | - Roland Lill
- Institut für Zytobiologie, Philipps-Universität Marburg, Robert-Koch-Str. 6, 35032 Marburg, Germany; SYNMIKRO Center for Synthetic Microbiology, Philipps-Universität Marburg, Hans-Meerwein-Strasse, 35043 Marburg, Germany.
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11
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Kastaniotis AJ, Autio KJ, R Nair R. Mitochondrial Fatty Acids and Neurodegenerative Disorders. Neuroscientist 2020; 27:143-158. [PMID: 32644907 DOI: 10.1177/1073858420936162] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Fatty acids in mitochondria, in sensu stricto, arise either as β-oxidation substrates imported via the carnitine shuttle or through de novo synthesis by the mitochondrial fatty acid synthesis (mtFAS) pathway. Defects in mtFAS or processes involved in the generation of the mtFAS product derivative lipoic acid (LA), including iron-sulfur cluster synthesis required for functional LA synthase, have emerged only recently as etiology for neurodegenerative disease. Intriguingly, mtFAS deficiencies very specifically affect CNS function, while LA synthesis and attachment defects have a pleiotropic presentation beyond neurodegeneration. Typical mtFAS defect presentations include optical atrophy, as well as basal ganglia defects associated with dystonia. The phenotype display of patients with mtFAS defects can resemble the presentation of disorders associated with coenzyme A (CoA) synthesis. A recent publication links these processes together based on the requirement of CoA for acyl carrier protein maturation. MtFAS defects, CoA synthesis- as well as Fe-S cluster-deficiencies share lack of LA as a common symptom.
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Affiliation(s)
| | - Kaija J Autio
- Faculty of Biochemistry and Molecular Medicine, University of Oulu, Oulu, Finland
| | - Remya R Nair
- Mammalian Genetics Unit, MRC Harwell Institute, Oxfordshire, UK
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12
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Hartman TG, Yosovich K, Michaeli HG, Blumkin L, Ben-Sira L, Lev D, Lerman-Sagie T, Zerem A. Expanding the genotype-phenotype spectrum of ISCA2-related multiple mitochondrial dysfunction syndrome-cavitating leukoencephalopathy and prolonged survival. Neurogenetics 2020; 21:243-249. [PMID: 32424628 DOI: 10.1007/s10048-020-00611-8] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Accepted: 04/01/2020] [Indexed: 12/19/2022]
Abstract
Iron-sulfur cluster assembly 2 (ISCA2)-related multiple mitochondrial dysfunction syndrome 4 (MMDS4) is a fatal autosomal recessive mitochondrial leukoencephalopathy. The disease typically manifests with rapid neurodevelopmental deterioration during the first months of life leading to a vegetative state and early death. MRI demonstrates a demyelinating leukodystrophy. We describe an eleven-year-old boy with a milder phenotype of ISCA2 related disorder manifesting as: normal early development, acute infantile neurologic deterioration leading to stable spastic quadriparesis, optic atrophy and mild cognitive impairment. The first MRI demonstrated a diffuse demyelinating leukodystrophy. A sequential MRI revealed white matter rarefaction with well-delineated cysts. The patient harbors two novel bi-allelic variants (p.Ala2Asp and p.Pro138Arg) in ISCA2 inherited from heterozygous carrier parents. This report expands the clinical spectrum of ISCA2-related disorders to include a milder phenotype with a longer life span and better psychomotor function and cavitating leukodystrophy on MRI. We discuss the possible genetic explanation for the different presentation.
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Affiliation(s)
- Tamar Gur Hartman
- Pediatric Neurology Unit, Wolfson Medical Center, Holon, Israel
- School of Psychological Sciences, Tel Aviv University, Tel Aviv, Israel
| | - Keren Yosovich
- Institute of Medical Genetics, Wolfson Medical Center, Holon, Israel
| | - Hila Gur Michaeli
- Institute of Medical Genetics, Wolfson Medical Center, Holon, Israel
| | - Lubov Blumkin
- Pediatric Neurology Unit, Wolfson Medical Center, Holon, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Liat Ben-Sira
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
- Pediatric Radiology Unit, TASMC, Tel Aviv, Israel
| | - Dorit Lev
- Institute of Medical Genetics, Wolfson Medical Center, Holon, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Tally Lerman-Sagie
- Pediatric Neurology Unit, Wolfson Medical Center, Holon, Israel
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ayelet Zerem
- Pediatric Neurology Unit, Wolfson Medical Center, Holon, Israel.
- Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel.
- Pediatric Neurology Unit, Dana-Dwek Children's Hospital, Tel Aviv Sourasky Medical Center, Tel Aviv, Israel.
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13
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Mitochondria regulation in ferroptosis. Eur J Cell Biol 2019; 99:151058. [PMID: 31810634 DOI: 10.1016/j.ejcb.2019.151058] [Citation(s) in RCA: 300] [Impact Index Per Article: 60.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2019] [Revised: 09/27/2019] [Accepted: 10/29/2019] [Indexed: 12/21/2022] Open
Abstract
Ferroptosis is recognized as a new form of regulated cell death which is initiated by severe lipid peroxidation relying on reactive oxygen species (ROS) generation and iron overload. This iron-dependent cell death manifests evident morphological, biochemical and genetic differences from other forms of regulated cell death, such as apoptosis, autophagy, necrosis and pyroptosis. Ferroptosis was primarily characterized by condensed mitochondrial membrane densities and smaller volume than normal mitochondria, as well as the diminished or vanished of mitochondria crista and outer membrane ruptured. Mitochondria take the center role in iron metabolism, as well as substance and energy metabolism as it's the major organelle in iron utilization, catabolic and anabolic pathways. Interference of key regulators of mitochondrial lipid metabolism (e.g., ASCF2 and CS), iron homeostasis (e.g., ferritin, mitoferrin1/2 and NEET proteins), glutamine metabolism and other signaling pathways make a difference to ferroptotic sensitivity. Targeted induction of ferroptosis was also considered as a potential therapeutic strategy to some oxidative stress diseases, including neurodegenerative disorders, ischemia-reperfusion injury, traumatic spinal cord injury. However, the pertinence between mitochondria and ferroptosis is still in dispute. Here we systematic elucidate the morphological characteristics and metabolic regulation of mitochondria in the regulation of ferroptosis.
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14
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Coelho MP, Correia J, Dias A, Nogueira C, Bandeira A, Martins E, Vilarinho L. Iron-sulfur cluster ISD11 deficiency ( LYRM4 gene) presenting as cardiorespiratory arrest and 3-methylglutaconic aciduria. JIMD Rep 2019; 49:11-16. [PMID: 31497476 PMCID: PMC6718106 DOI: 10.1002/jmd2.12058] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/05/2019] [Revised: 04/23/2019] [Accepted: 05/27/2019] [Indexed: 11/08/2022] Open
Abstract
In the era of genomics, the number of genes linked to mitochondrial disease has been quickly growing, producing massive knowledge on mitochondrial biochemistry. LYRM4 gene codifies for ISD11, a small protein (11 kDa) acting as an iron-sulfur cluster, that has been recently confirmed as a disease-causing gene for mitochondrial disorders. We present a 4-year-old girl patient, born from non-consanguineous healthy parents, with two episodes of cardiorespiratory arrest after respiratory viral illness with progressive decreased activity and lethargy, at the age of 2 and 3 years. She was asymptomatic between crisis with regular growth and normal development. During acute events of illness, she had hyperlactacidemia (maximum lactate 5.2 mmol/L) and urinary excretion of ketone bodies and 3-methylglutaconic acid, which are normalized after recovery. A Next Generation Sequence approach with a broad gene panel designed for mitochondrial disorders revealed a novel probably pathogenic variant in homozygosity in the LYRM4 gene [p.Tyr31Cys (c.92A>G)] with Mendelian segregation. Functional studies in the skeletal muscle confirmed a combined deficiency of the mitochondrial respiratory chain (I, II, and IV complexes). To our knowledge, this is the third case of LYRM4 deficiency worldwide and the first with 3-methylglutaconic aciduria, not reported in any Fe-S cluster deficiency. Remarkably, it appears to be no neurological involvement so far, only with life-threating acute crisis triggered by expectably benign autolimited illnesses. Respiratory chain cofactors and chaperones are a new field of knowledge and can play a remarkable effect in system homeostasis.
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Affiliation(s)
- Margarida Paiva Coelho
- Reference Center for Metabolic DisordersCentro Hospitalar Universitário do PortoPortoPortugal
| | - Joana Correia
- Reference Center for Metabolic DisordersCentro Hospitalar Universitário do PortoPortoPortugal
| | - Aureliano Dias
- Newborn Screening, Metabolism and Genetics Unit, Human Genetics DepartmentNational Institute of Health Doutor Ricardo JorgeLisboaPortugal
| | - Célia Nogueira
- Newborn Screening, Metabolism and Genetics Unit, Human Genetics DepartmentNational Institute of Health Doutor Ricardo JorgeLisboaPortugal
| | - Anabela Bandeira
- Reference Center for Metabolic DisordersCentro Hospitalar Universitário do PortoPortoPortugal
| | - Esmeralda Martins
- Reference Center for Metabolic DisordersCentro Hospitalar Universitário do PortoPortoPortugal
| | - Laura Vilarinho
- Newborn Screening, Metabolism and Genetics Unit, Human Genetics DepartmentNational Institute of Health Doutor Ricardo JorgeLisboaPortugal
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15
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The biogenesis of iron-sulfur proteins: from cellular biology to molecular aspects. J Biol Inorg Chem 2019; 23:493-494. [PMID: 29637286 DOI: 10.1007/s00775-018-1555-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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16
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Kober KM, Olshen A, Conley YP, Schumacher M, Topp K, Smoot B, Mazor M, Chesney M, Hammer M, Paul SM, Levine JD, Miaskowski C. Expression of mitochondrial dysfunction-related genes and pathways in paclitaxel-induced peripheral neuropathy in breast cancer survivors. Mol Pain 2018; 14:1744806918816462. [PMID: 30426838 PMCID: PMC6293373 DOI: 10.1177/1744806918816462] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022] Open
Abstract
Background Paclitaxel is one of the most commonly used drugs to treat breast cancer. Its
major dose-limiting toxicity is paclitaxel-induced peripheral neuropathy
(PIPN). PIPN persists into survivorship and has a negative impact on
patient’s mood, functional status, and quality of life. No interventions are
available to treat PIPN. A critical barrier to the development of
efficacious interventions is the lack of understanding of the mechanisms
that underlie PIPN. Mitochondrial dysfunction has been evaluated in
preclinical studies as a hypothesized mechanism for PIPN, but clinical data
to support this hypothesis are limited. The purpose of this pilot study was
to evaluate for differential gene expression and perturbed pathways between
breast cancer survivors with and without PIPN. Methods Gene expression in peripheral blood was assayed using RNA-seq. Differentially
expressed genes (DEG) and pathways associated with mitochondrial dysfunction
were identified between survivors who received paclitaxel and did (n = 25)
and did not (n = 25) develop PIPN. Results Breast cancer survivors with PIPN were significantly older; more likely to be
unemployed; reported lower alcohol use; had a higher body mass index and
poorer functional status; and had a higher number of lower extremity sites
with loss of light touch, cold, and pain sensations and higher vibration
thresholds. No between-group differences were found in the cumulative dose
of paclitaxel received or in the percentage of patients who had a dose
reduction or delay due to PIPN. Five DEGs and nine perturbed pathways were
associated with mitochondrial dysfunction related to oxidative stress, iron
homeostasis, mitochondrial fission, apoptosis, and autophagy. Conclusions This study is the first to provide molecular evidence that a number of
mitochondrial dysfunction mechanisms identified in preclinical models of
various types of neuropathic pain including chemotherapy-induced peripheral
neuropathy are found in breast cancer survivors with persistent PIPN and
suggest genes for validation and as potential therapeutic targets.
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Affiliation(s)
- Kord M Kober
- 1 School of Nursing, University of California, San Francisco, San Francisco, CA, USA
| | - Adam Olshen
- 2 School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Yvettte P Conley
- 3 School of Nursing, University of Pittsburgh, Pittsburgh, PA, USA
| | - Mark Schumacher
- 2 School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Kimberly Topp
- 2 School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Betty Smoot
- 2 School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Melissa Mazor
- 1 School of Nursing, University of California, San Francisco, San Francisco, CA, USA
| | - Margaret Chesney
- 2 School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Marilyn Hammer
- 4 Department of Nursing, Mount Sinai Medical Center, New York, NY, USA
| | - Steven M Paul
- 1 School of Nursing, University of California, San Francisco, San Francisco, CA, USA
| | - Jon D Levine
- 2 School of Medicine, University of California, San Francisco, San Francisco, CA, USA
| | - Christine Miaskowski
- 1 School of Nursing, University of California, San Francisco, San Francisco, CA, USA
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17
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Human diseases associated with defects in assembly of OXPHOS complexes. Essays Biochem 2018; 62:271-286. [PMID: 30030362 PMCID: PMC6056716 DOI: 10.1042/ebc20170099] [Citation(s) in RCA: 62] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 04/13/2018] [Accepted: 05/02/2018] [Indexed: 02/02/2023]
Abstract
The structural biogenesis and functional proficiency of the multiheteromeric complexes forming the mitochondrial oxidative phosphorylation system (OXPHOS) require the concerted action of a number of chaperones and other assembly factors, most of which are specific for each complex. Mutations in a large number of these assembly factors are responsible for mitochondrial disorders, in most cases of infantile onset, typically characterized by biochemical defects of single specific complexes. In fact, pathogenic mutations in complex-specific assembly factors outnumber, in many cases, the repertoire of mutations found in structural subunits of specific complexes. The identification of patients with specific defects in assembly factors has provided an important contribution to the nosological characterization of mitochondrial disorders, and has also been a crucial means to identify a huge number of these proteins in humans, which play an essential role in mitochondrial bioenergetics. The wide use of next generation sequencing (NGS) has led to and will allow the identifcation of additional components of the assembly machinery of individual complexes, mutations of which are responsible for human disorders. The functional studies on patients' specimens, together with the creation and characterization of in vivo models, are fundamental to better understand the mechanisms of each of them. A new chapter in this field will be, in the near future, the discovery of mechanisms and actions underlying the formation of supercomplexes, molecular structures formed by the physical, and possibly functional, interaction of some of the individual respiratory complexes, particularly complex I (CI), III (CIII), and IV (CIV).
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