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Töpf A, Cox D, Zaharieva IT, Di Leo V, Sarparanta J, Jonson PH, Sealy IM, Smolnikov A, White RJ, Vihola A, Savarese M, Merteroglu M, Wali N, Laricchia KM, Venturini C, Vroling B, Stenton SL, Cummings BB, Harris E, Marini-Bettolo C, Diaz-Manera J, Henderson M, Barresi R, Duff J, England EM, Patrick J, Al-Husayni S, Biancalana V, Beggs AH, Bodi I, Bommireddipalli S, Bönnemann CG, Cairns A, Chiew MT, Claeys KG, Cooper ST, Davis MR, Donkervoort S, Erasmus CE, Fassad MR, Genetti CA, Grosmann C, Jungbluth H, Kamsteeg EJ, Lornage X, Löscher WN, Malfatti E, Manzur A, Martí P, Mongini TE, Muelas N, Nishikawa A, O'Donnell-Luria A, Ogonuki N, O'Grady GL, O'Heir E, Paquay S, Phadke R, Pletcher BA, Romero NB, Schouten M, Shah S, Smuts I, Sznajer Y, Tasca G, Taylor RW, Tuite A, Van den Bergh P, VanNoy G, Voermans NC, Wanschitz JV, Wraige E, Yoshimura K, Oates EC, Nakagawa O, Nishino I, Laporte J, Vilchez JJ, MacArthur DG, Sarkozy A, Cordell HJ, Udd B, Busch-Nentwich EM, Muntoni F, Straub V. Digenic inheritance involving a muscle-specific protein kinase and the giant titin protein causes a skeletal muscle myopathy. Nat Genet 2024; 56:395-407. [PMID: 38429495 PMCID: PMC10937387 DOI: 10.1038/s41588-023-01651-0] [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: 03/29/2021] [Accepted: 12/19/2023] [Indexed: 03/03/2024]
Abstract
In digenic inheritance, pathogenic variants in two genes must be inherited together to cause disease. Only very few examples of digenic inheritance have been described in the neuromuscular disease field. Here we show that predicted deleterious variants in SRPK3, encoding the X-linked serine/argenine protein kinase 3, lead to a progressive early onset skeletal muscle myopathy only when in combination with heterozygous variants in the TTN gene. The co-occurrence of predicted deleterious SRPK3/TTN variants was not seen among 76,702 healthy male individuals, and statistical modeling strongly supported digenic inheritance as the best-fitting model. Furthermore, double-mutant zebrafish (srpk3-/-; ttn.1+/-) replicated the myopathic phenotype and showed myofibrillar disorganization. Transcriptome data suggest that the interaction of srpk3 and ttn.1 in zebrafish occurs at a post-transcriptional level. We propose that digenic inheritance of deleterious changes impacting both the protein kinase SRPK3 and the giant muscle protein titin causes a skeletal myopathy and might serve as a model for other genetic diseases.
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Affiliation(s)
- Ana Töpf
- John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK.
| | - Dan Cox
- John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Irina T Zaharieva
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health & Great Ormond Street Hospital, London, UK
| | - Valeria Di Leo
- John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
- Department of Life Sciences, University of Trieste, Trieste, Italy
| | - Jaakko Sarparanta
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Per Harald Jonson
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Ian M Sealy
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Department of Medicine, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
| | - Andrei Smolnikov
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Richard J White
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Department of Medicine, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
| | - Anna Vihola
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, Finland
- Neuromuscular Research Centre, Tampere University and University Hospital, Tampere, Finland
| | - Marco Savarese
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Munise Merteroglu
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK
- Laboratory of Angiogenesis and Cancer Metabolism, Department of Biology, University of Padua, Padua, Italy
| | - Neha Wali
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Kristen M Laricchia
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Analytic and Translational Genetics Unit, Massachusetts General Hospital, Boston, MA, USA
| | - Cristina Venturini
- Division of Infection and Immunity, University College London, London, UK
| | | | - Sarah L Stenton
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of Genetics & Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, MA, USA
| | - Beryl B Cummings
- Laboratory of Angiogenesis and Cancer Metabolism, Department of Biology, University of Padua, Padua, Italy
| | - Elizabeth Harris
- John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
- Northern Genetics Service, Institute of Genetics Medicine, Newcastle upon Tyne, UK
| | - Chiara Marini-Bettolo
- John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Jordi Diaz-Manera
- John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Matt Henderson
- Muscle Immunoanalysis Unit, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | | | - Jennifer Duff
- John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Eleina M England
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Jane Patrick
- Wellcome Sanger Institute, Wellcome Genome Campus, Hinxton, UK
| | - Sundos Al-Husayni
- The Manton Center for Orphan Disease Research, Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Valerie Biancalana
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U1258, Cnrs UMR7104, Université de Strasbourg, Illkirch, France
| | - Alan H Beggs
- The Manton Center for Orphan Disease Research, Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Istvan Bodi
- Department of Clinical Neuropathology, King's College Hospital NHS Foundation Trust, London, UK
| | - Shobhana Bommireddipalli
- Kids Neuroscience Centre, the Children's Hospital at Westmead, the University of Sydney and the Children's Medical Research Institute, Westmead, New South Wales, Australia
| | - Carsten G Bönnemann
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Anita Cairns
- Neurosciences Department, Queensland Children's Hospital, Brisbane, Queensland, Australia
| | - Mei-Ting Chiew
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, Perth, Western Australia, Australia
| | - Kristl G Claeys
- Department of Neurology, University Hospitals Leuven, Leuven, Belgium
- Laboratory for Muscle Diseases and Neuropathies, Department of Neurosciences, KU Leuven, Leuven, Belgium
| | - Sandra T Cooper
- Kids Neuroscience Centre, the Children's Hospital at Westmead, the University of Sydney and the Children's Medical Research Institute, Westmead, New South Wales, Australia
| | - Mark R Davis
- Department of Diagnostic Genomics, PathWest Laboratory Medicine, Perth, Western Australia, Australia
| | - Sandra Donkervoort
- Neuromuscular and Neurogenetic Disorders of Childhood Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD, USA
| | - Corrie E Erasmus
- Department of Paediatric Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Centre, Amalia Children's Hospital, Nijmegen, The Netherlands
| | - Mahmoud R Fassad
- Wellcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- NHS Highly Specialised Service for Rare Mitochondrial Disorders, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Casie A Genetti
- The Manton Center for Orphan Disease Research, Division of Genetics and Genomics, Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Carla Grosmann
- Department of Neurology, Rady Children's Hospital University of California San Diego, San Diego, CA, USA
| | - Heinz Jungbluth
- Department of Paediatric Neurology, Neuromuscular Service, Evelina's Children Hospital, Guy's & St. Thomas' Hospital NHS Foundation Trust, London, UK
- Randall Centre for Cell and Molecular Biophysics, Muscle Signalling Section, Faculty of Life Sciences and Medicine (FoLSM), King's College London, London, UK
| | - Erik-Jan Kamsteeg
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Xavière Lornage
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U1258, Cnrs UMR7104, Université de Strasbourg, Illkirch, France
| | - Wolfgang N Löscher
- Department of Neurology, Medical University Innsbruck, Innsbruck, Austria
| | - Edoardo Malfatti
- APHP, Neuromuscular Reference Center Nord-Est-Ile-de-France, Henri Mondor Hospital, Université Paris Est, U955, INSERM, Creteil, France
| | - Adnan Manzur
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health & Great Ormond Street Hospital, London, UK
| | - Pilar Martí
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- Neuromuscular Research Group, IIS La Fe, Valencia, Spain
| | - Tiziana E Mongini
- Department of Neurosciences Rita Levi Montalcini, Università degli Studi di Torino, Torino, Italy
| | - Nuria Muelas
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- Neuromuscular Research Group, IIS La Fe, Valencia, Spain
- Department of Medicine, Universitat de Valencia, Valencia, Spain
- Neuromuscular Diseases Unit, Neurology Department, Hospital Universitari I Politècnic La Fe, Valencia, Spain
| | - Atsuko Nishikawa
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Anne O'Donnell-Luria
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Division of Genetics & Genomics, Department of Pediatrics, Boston Children's Hospital, Boston, MA, USA
| | | | - Gina L O'Grady
- Starship Children's Health, Auckland District Health Board, Auckland, New Zealand
| | - Emily O'Heir
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Stéphanie Paquay
- Cliniques Universitaires St-Luc, Centre de Référence Neuromusculaire, Université de Louvain, Brussels, Belgium
| | - Rahul Phadke
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health & Great Ormond Street Hospital, London, UK
| | - Beth A Pletcher
- Division of Clinical Genetics, Department of Pediatrics, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Norma B Romero
- Neuromuscular Morphology Unit, Myology Institute, Sorbonne Université, Centre de Référence de Pathologie Neuromusculaire Nord/Est/Ile-de-France (APHP), GH Pitié-Salpêtrière, Paris, France
| | - Meyke Schouten
- Department of Human Genetics, Radboud University Medical Center, Nijmegen, The Netherlands
| | - Snehal Shah
- Department of Neurology, Perth Children's Hospital, Nedlands, Western Australia, Australia
| | - Izelle Smuts
- Department of Paediatrics, Steve Biko Academic Hospital, University of Pretoria, Pretoria, South Africa
| | - Yves Sznajer
- Center for Human Genetic, Cliniques Universitaires Saint Luc, UCLouvain, Brussels, Belgium
| | - Giorgio Tasca
- John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Robert W Taylor
- Wellcome Centre for Mitochondrial Research, Translational and Clinical Research Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
- NHS Highly Specialised Service for Rare Mitochondrial Disorders, Newcastle upon Tyne Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK
| | - Allysa Tuite
- Division of Clinical Genetics, Department of Pediatrics, Rutgers New Jersey Medical School, Newark, NJ, USA
| | - Peter Van den Bergh
- Cliniques Universitaires St-Luc, Centre de Référence Neuromusculaire, Université de Louvain, Brussels, Belgium
| | - Grace VanNoy
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
| | - Nicol C Voermans
- Department of Neurology, Donders Institute for Brain, Cognition and Behavior, Radboud University Medical Centre, Nijmegen, The Netherlands
| | - Julia V Wanschitz
- Department of Neurology, Medical University Innsbruck, Innsbruck, Austria
| | - Elizabeth Wraige
- Evelina's Children Hospital, Guy's & St. Thomas' Hospital NHS Foundation Trust, London, UK
| | | | - Emily C Oates
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, New South Wales, Australia
| | - Osamu Nakagawa
- Department of Molecular Physiology, National Cerebral and Cardiovascular Center Research Institute, Osaka, Japan
| | - Ichizo Nishino
- Department of Neuromuscular Research, National Institute of Neuroscience, National Center of Neurology and Psychiatry, Tokyo, Japan
| | - Jocelyn Laporte
- Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), Inserm U1258, Cnrs UMR7104, Université de Strasbourg, Illkirch, France
| | - Juan J Vilchez
- Centro de Investigación Biomédica en Red de Enfermedades Raras (CIBERER), Madrid, Spain
- Neuromuscular Research Group, IIS La Fe, Valencia, Spain
| | - Daniel G MacArthur
- Program in Medical and Population Genetics, Broad Institute of MIT and Harvard, Cambridge, MA, USA
- Centre for Population Genomics, Garvan Institute of Medical Research and UNSW, Sydney, New South Wales, Australia
- Centre for Population Genomics, Murdoch Children's Research Institute, Melbourne, Victoria, Australia
| | - Anna Sarkozy
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health & Great Ormond Street Hospital, London, UK
| | - Heather J Cordell
- Population Health Sciences Institute, Faculty of Medical Sciences, Newcastle University, Newcastle upon Tyne, UK
| | - Bjarne Udd
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical and Clinical Genetics, Medicum, University of Helsinki, Helsinki, Finland
- Neuromuscular Research Centre, Tampere University and University Hospital, Tampere, Finland
| | - Elisabeth M Busch-Nentwich
- School of Biological and Behavioural Sciences, Queen Mary University of London, London, UK
- Cambridge Institute of Therapeutic Immunology & Infectious Disease (CITIID), Department of Medicine, Jeffrey Cheah Biomedical Centre, University of Cambridge, Cambridge, UK
| | - Francesco Muntoni
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health & Great Ormond Street Hospital, London, UK
- NIHR Great Ormond Street Hospital Biomedical Research Centre, Great Ormond Street Institute of Child Health, UCL & Great Ormond Street Hospital Trust, London, UK
| | - Volker Straub
- John Walton Muscular Dystrophy Research Centre, Translational and Clinical Research Institute, Newcastle University and Newcastle Hospitals NHS Foundation Trust, Newcastle upon Tyne, UK.
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2
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Wyatt LE, Hewan PA, Hogeveen J, Spreng RN, Turner GR. Exploration versus exploitation decisions in the human brain: A systematic review of functional neuroimaging and neuropsychological studies. Neuropsychologia 2024; 192:108740. [PMID: 38036246 DOI: 10.1016/j.neuropsychologia.2023.108740] [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: 01/28/2023] [Revised: 10/15/2023] [Accepted: 11/21/2023] [Indexed: 12/02/2023]
Abstract
Thoughts and actions are often driven by a decision to either explore new avenues with unknown outcomes, or to exploit known options with predictable outcomes. Yet, the neural mechanisms underlying this exploration-exploitation trade-off in humans remain poorly understood. This is attributable to variability in the operationalization of exploration and exploitation as psychological constructs, as well as the heterogeneity of experimental protocols and paradigms used to study these choice behaviours. To address this gap, here we present a comprehensive review of the literature to investigate the neural basis of explore-exploit decision-making in humans. We first conducted a systematic review of functional magnetic resonance imaging (fMRI) studies of exploration-versus exploitation-based decision-making in healthy adult humans during foraging, reinforcement learning, and information search. Eleven fMRI studies met inclusion criterion for this review. Adopting a network neuroscience framework, synthesis of the findings across these studies revealed that exploration-based choice was associated with the engagement of attentional, control, and salience networks. In contrast, exploitation-based choice was associated with engagement of default network brain regions. We interpret these results in the context of a network architecture that supports the flexible switching between externally and internally directed cognitive processes, necessary for adaptive, goal-directed behaviour. To further investigate potential neural mechanisms underlying the exploration-exploitation trade-off we next surveyed studies involving neurodevelopmental, neuropsychological, and neuropsychiatric disorders, as well as lifespan development, and neurodegenerative diseases. We observed striking differences in patterns of explore-exploit decision-making across these populations, again suggesting that these two decision-making modes are supported by independent neural circuits. Taken together, our review highlights the need for precision-mapping of the neural circuitry and behavioural correlates associated with exploration and exploitation in humans. Characterizing exploration versus exploitation decision-making biases may offer a novel, trans-diagnostic approach to assessment, surveillance, and intervention for cognitive decline and dysfunction in normal development and clinical populations.
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Affiliation(s)
- Lindsay E Wyatt
- Department of Psychology, York University, Toronto, ON, Canada
| | - Patrick A Hewan
- Department of Psychology, York University, Toronto, ON, Canada
| | - Jeremy Hogeveen
- Department of Psychology, The University of New Mexico, Albuquerque, NM, USA
| | - R Nathan Spreng
- Montréal Neurological Institute, Department of Neurology and Neurosurgery, McGill University, Montréal, QC, H3A 2B4, Canada; Department of Psychology, McGill University, Montréal, QC, Canada; Department of Psychiatry, McGill University, Montréal, QC, Canada; McConnell Brain Imaging Centre, Montréal Neurological Institute, McGill University, Montréal, QC, Canada.
| | - Gary R Turner
- Department of Psychology, York University, Toronto, ON, Canada.
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3
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Kuehnemann C, Wiley CD. Senescent cells at the crossroads of aging, disease, and tissue homeostasis. Aging Cell 2024; 23:e13988. [PMID: 37731189 PMCID: PMC10776127 DOI: 10.1111/acel.13988] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/06/2023] [Revised: 08/15/2023] [Accepted: 08/18/2023] [Indexed: 09/22/2023] Open
Abstract
Originally identified as an outcome of continuous culture of primary cells, cellular senescence has moved beyond the culture dish and is now a bona fide driver of aging and disease in animal models, and growing links to human disease. This cellular stress response consists of a stable proliferative arrest coupled to multiple phenotypic changes. Perhaps the most important of these is the senescence-associated secretory phenotype, or senescence-associated secretory phenotype -a complex and variable collection of secreted molecules release by senescent cells with a number of potent biological activities. Senescent cells appear in multiple age-associated conditions in humans and mice, and interventions that eliminate these cells can prevent or even reverse multiple diseases in mouse models. Here, we review salient aspects of senescent cells in the context of human disease and homeostasis. Senescent cells increase in abundance during several diseases that associated with premature aging. Conversely, senescent cells have a key role in beneficial processes such as development and wound healing, and thus can help maintain tissue homeostasis. Finally, we speculate on mechanisms by which deleterious aspects of senescent cells might be targeted while retaining homeostatic aspects in order to improve age-related outcomes.
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Affiliation(s)
- Chisaka Kuehnemann
- Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts UniversityBostonMassachusettsUSA
| | - Christopher D. Wiley
- Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts UniversityBostonMassachusettsUSA
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Huang S, Zhang Y, Zhan Z, Gong S. A subtype of laminopathies: Generalized lipodystrophy-associated progeroid syndrome caused by LMNA gene c.29C>T mutation. J Diabetes Investig 2023; 14:1221-1225. [PMID: 37448194 PMCID: PMC10512909 DOI: 10.1111/jdi.14055] [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: 05/04/2023] [Revised: 06/25/2023] [Accepted: 06/28/2023] [Indexed: 07/15/2023] Open
Abstract
The term laminopathies refers to a group of congenital diseases characterized by accelerated degeneration of human tissues. Mutations in LMNA, LMNB, ZMPSTE24, and other genes lead to structural and functional abnormalities associated with lamins. One subtype of laminopathy is the generalized lipodystrophy-associated progeroid syndrome (GLPS), which occurs in patients with heterozygous mutations of the LMNA gene c.29C>T(p.T10I). This paper reports the first case of GLPS in China and compares the clinical features of other GLPS patients with literature reports. A 16-year-old male patient was treated for diabetic ketoacidosis, presenting with premature aging appearance, systemic lipodystrophy, severe fatty liver, and decreased bone density. After peripheral blood DNA extraction and second-generation sequencing, a heterozygous mutation of exon 1 of the LMNA gene c.29C>T(p.T10I) was detected. This case of GLPS may provide a diagnostic and therapeutic basis for potential patients.
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Affiliation(s)
- Shipeng Huang
- Department of EmergencyFirst Affiliated Hospital of Nanchang UniversityNanchangChina
| | - Yan Zhang
- Department of Endocrinology and MetabolismFirst Affiliated Hospital of Nanchang UniversityNanchangChina
- Jiangxi Clinical Research Center for Endocrine and Metabolic DiseaseNanchangChina
- Jiangxi Branch of National Clinical Research Center for Metabolic DiseaseNanchangChina
| | - Zuan Zhan
- Department of EmergencyFirst Affiliated Hospital of Nanchang UniversityNanchangChina
| | - Shuhao Gong
- Department of EmergencyFirst Affiliated Hospital of Nanchang UniversityNanchangChina
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5
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He L, Liao J, Liu Z, Wang T, Zhou Y, Wang T, Lei B, Zhou G. Multi-omic analysis of mandibuloacral dysplasia type A patient iPSC-derived MSC senescence reveals miR-311 as a novel biomarker for MSC senescence. Hum Mol Genet 2023; 32:2872-2886. [PMID: 37427980 DOI: 10.1093/hmg/ddad111] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2022] [Revised: 06/23/2023] [Accepted: 06/02/2023] [Indexed: 07/11/2023] Open
Abstract
Mandibuloacral dysplasia type A (MADA) is a rare genetic progeroid syndrome associated with lamin A/C (LMNA) mutations. Pathogenic mutations of LMNA result in nuclear structural abnormalities, mesenchymal tissue damage and progeria phenotypes. However, it remains elusive how LMNA mutations cause mesenchymal-derived cell senescence and disease development. Here, we established an in vitro senescence model using induced pluripotent stem cell-derived mesenchymal stem cells (iMSCs) from MADA patients with homozygous LMNA p.R527C mutation. When expanded to passage 13 in vitro, R527C iMSCs exhibited marked senescence and attenuation of stemness potential, accompanied by immunophenotypic changes. Transcriptome and proteome analysis revealed that cell cycle, DNA replication, cell adhesion and inflammation might play important roles in senescence. In-depth evaluation of changes in extracellular vesicle (EV) derived iMSCs during senescence revealed that R527C iMSC-EVs could promote surrounding cell senescence by carrying pro-senescence microRNAs (miRNAs), including a novel miRNA called miR-311, which can serve as a new indicator for detecting chronic and acute mesenchymal stem cell (MSC) senescence and play a role in promoting senescence. Overall, this study advanced our understanding of the impact of LMNA mutations on MSC senescence and provided novel insights into MADA therapy as well as the link between chronic inflammation and aging development.
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Affiliation(s)
- Liangge He
- Guangdong Key Laboratory of Genomic Stability and Disease Prevention, Shenzhen Key Laboratory of Anti-Aging and Regenerative Medicine, Shenzhen Engineering Laboratory of Regenerative Technologies for Orthopedic Diseases, Department of Medical Cell Biology and Genetics, Shenzhen University Medical School, Shenzhen 518060, China
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Jinqi Liao
- Senotherapeutics Ltd, Hangzhou 311100, China
- Lungene Biotech Ltd, Shenzhen 518110, China
| | - Zhen Liu
- Guangdong Key Laboratory of Genomic Stability and Disease Prevention, Shenzhen Key Laboratory of Anti-Aging and Regenerative Medicine, Shenzhen Engineering Laboratory of Regenerative Technologies for Orthopedic Diseases, Department of Medical Cell Biology and Genetics, Shenzhen University Medical School, Shenzhen 518060, China
| | - Ting Wang
- Senotherapeutics Ltd, Hangzhou 311100, China
- Lungene Biotech Ltd, Shenzhen 518110, China
| | - Yan Zhou
- Guangdong Key Laboratory of Genomic Stability and Disease Prevention, Shenzhen Key Laboratory of Anti-Aging and Regenerative Medicine, Shenzhen Engineering Laboratory of Regenerative Technologies for Orthopedic Diseases, Department of Medical Cell Biology and Genetics, Shenzhen University Medical School, Shenzhen 518060, China
- Lungene Biotech Ltd, Shenzhen 518110, China
| | - Tianfu Wang
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Baiying Lei
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, National-Regional Key Technology Engineering Laboratory for Medical Ultrasound, School of Biomedical Engineering, Shenzhen University Medical School, Shenzhen 518060, China
| | - Guangqian Zhou
- Guangdong Key Laboratory of Genomic Stability and Disease Prevention, Shenzhen Key Laboratory of Anti-Aging and Regenerative Medicine, Shenzhen Engineering Laboratory of Regenerative Technologies for Orthopedic Diseases, Department of Medical Cell Biology and Genetics, Shenzhen University Medical School, Shenzhen 518060, China
- Senotherapeutics Ltd, Hangzhou 311100, China
- Lungene Biotech Ltd, Shenzhen 518110, China
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6
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Saadi A, Navarro C, Ozalp O, Lourenco CM, Fayek R, Da Silva N, Chaouch A, Benahmed M, Kubisch C, Munnich A, Lévy N, Roll P, Pacha LA, Chaouch M, Lessel D, De Sandre-Giovannoli A. A recurrent homozygous LMNA missense variant p.Thr528Met causes atypical progeroid syndrome characterized by mandibuloacral dysostosis, severe muscular dystrophy, and skeletal deformities. Am J Med Genet A 2023; 191:2274-2289. [PMID: 37387251 DOI: 10.1002/ajmg.a.63335] [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: 12/21/2022] [Revised: 06/05/2023] [Accepted: 06/12/2023] [Indexed: 07/01/2023]
Abstract
Atypical progeroid syndromes (APS) are premature aging syndromes caused by pathogenic LMNA missense variants, associated with unaltered expression levels of lamins A and C, without accumulation of wild-type or deleted prelamin A isoforms, as observed in Hutchinson-Gilford progeria syndrome (HGPS) or HGPS-like syndromes. A specific LMNA missense variant, (p.Thr528Met), was previously identified in a compound heterozygous state in patients affected by APS and severe familial partial lipodystrophy, whereas heterozygosity was recently identified in patients affected by Type 2 familial partial lipodystrophy. Here, we report four unrelated boys harboring homozygosity for the p.Thr528Met, variant who presented with strikingly homogeneous APS clinical features, including osteolysis of mandibles, distal clavicles and phalanges, congenital muscular dystrophy with elevated creatine kinase levels, and major skeletal deformities. Immunofluorescence analyses of patient-derived primary fibroblasts showed a high percentage of dysmorphic nuclei with nuclear blebs and typical honeycomb patterns devoid of lamin B1. Interestingly, in some protrusions emerin or LAP2α formed aberrant aggregates, suggesting pathophysiology-associated clues. These four cases further confirm that a specific LMNA variant can lead to the development of strikingly homogeneous clinical phenotypes, in these particular cases a premature aging phenotype with major musculoskeletal involvement linked to the homozygous p.Thr528Met variant.
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Affiliation(s)
- Abdelkrim Saadi
- Service de neurologie, Etablissement Hospitalier Specialisé de Ben Aknoun, Université Benyoucef Benkhedda, Algiers, Algeria
- Laboratoire de Neurosciences, Service de neurologie, Centre Hospitalo Universitaire Mustapha Bacha, Université Benyoucef Benkhedda Alger, Algiers, Algeria
| | - Claire Navarro
- INSERM, MMG, Aix Marseille University, Marseille, France
- Neoflow Therapeutics, 61 boulevard des Dames, 13002, Marseille, France
| | - Ozge Ozalp
- Genetic Diagnosis Center, Adana City Training and Research Hospital University of Health Sciences, Adana, Turkey
| | - Charles Marques Lourenco
- Neurogenetics Unit-Inborn Errors of Metabolism Clinics, National Reference Center for Rare Diseases, Faculdade de Medicina de São José do Rio Preto, São José do Rio Preto, Brazil
- Department of Specialized Education, Personalized Medicine Area, DLE/Grupo Pardini, Rio de Janeiro, Brazil
| | - Racha Fayek
- INSERM, MMG, Aix Marseille University, Marseille, France
| | | | - Athmane Chaouch
- Service de neurophysiologie, Etablissement Hospitalier Specialisé, Algiers, Algeria
| | - Meryem Benahmed
- Service d'anatomo-pathologie, Centre Pierre Marie Curie, Algiers, Algeria
| | - Christian Kubisch
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Arnold Munnich
- Department of Clinical Genetics, Institut de Recherche Necker Enfants Malades, Paris, France
| | - Nicolas Lévy
- INSERM, MMG, Aix Marseille University, Marseille, France
- Department of Medical Genetics, La Timone Hospital, APHM, Marseille, France
| | - Patrice Roll
- INSERM, MMG, Aix Marseille University, Marseille, France
- Cell Biology Laboratory, La Timone Hospital, APHM, Marseille, France
| | - Lamia Ali Pacha
- Laboratoire de Neurosciences, Service de neurologie, Centre Hospitalo Universitaire Mustapha Bacha, Université Benyoucef Benkhedda Alger, Algiers, Algeria
| | - Malika Chaouch
- Service de neurologie, Etablissement Hospitalier Specialisé de Ben Aknoun, Université Benyoucef Benkhedda, Algiers, Algeria
| | - Davor Lessel
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
- Institute of Human Genetics, University Hospital of the Paracelsus Medical University Salzburg, Salzburg, Austria
| | - Annachiara De Sandre-Giovannoli
- INSERM, MMG, Aix Marseille University, Marseille, France
- Department of Medical Genetics, La Timone Hospital, APHM, Marseille, France
- Biological Resource Center (CRB-TAC), La Timone Hospital, APHM, Marseille, France
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7
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Pande S, Ghosh DK. Nuclear proteostasis imbalance in laminopathy-associated premature aging diseases. FASEB J 2023; 37:e23116. [PMID: 37498235 DOI: 10.1096/fj.202300878r] [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: 05/02/2023] [Revised: 06/15/2023] [Accepted: 07/13/2023] [Indexed: 07/28/2023]
Abstract
Laminopathies are a group of rare genetic disorders with heterogeneous clinical phenotypes such as premature aging, cardiomyopathy, lipodystrophy, muscular dystrophy, microcephaly, epilepsy, and so on. The cellular phenomena associated with laminopathy invariably show disruption of nucleoskeleton of lamina due to deregulated expression, localization, function, and interaction of mutant lamin proteins. Impaired spatial and temporal tethering of lamin proteins to the lamina or nucleoplasmic aggregation of lamins are the primary molecular events that can trigger nuclear proteotoxicity by modulating differential protein-protein interactions, sequestering quality control proteins, and initiating a cascade of abnormal post-translational modifications. Clearly, laminopathic cells exhibit moderate to high nuclear proteotoxicity, raising the question of whether an imbalance in nuclear proteostasis is involved in laminopathic diseases, particularly in diseases of early aging such as HGPS and laminopathy-associated premature aging. Here, we review nuclear proteostasis and its deregulation in the context of lamin proteins and laminopathies.
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Affiliation(s)
- Shruti Pande
- Department of Medical Genetics, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
| | - Debasish Kumar Ghosh
- Enteric Disease Division, Department of Microbiology, Kasturba Medical College, Manipal, Manipal Academy of Higher Education, Manipal, India
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8
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Ververi A, Babatseva E, Mitsiakos G, Karagiannopoulou G, Malakozi M, Patsatsi A, Diamanti E, Garg A. Restrictive dermopathy due to ZMPSTE24 deficiency. Clin Dysmorphol 2023; 32:92-94. [PMID: 36876346 PMCID: PMC10037671 DOI: 10.1097/mcd.0000000000000453] [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] [Indexed: 03/07/2023]
Abstract
Restrictive dermopathy (RD) (OMIM 275210) is a rare, lethal genodermatosis belonging to the group of laminopathies. It is caused by biallelic variants in ZMPSTE24 , which is involved in lamin A post-translational processing or, less frequently, by monoallelic variants in LMNA , leading to accumulation of truncated prelamin A protein (Navarro et al., 2004 ; Navarro et al., 2005 ). The main characteristics of RD include intrauterine growth retardation (IUGR), reduced fetal movement, premature rupture of membranes, translucent rigid skin, dysmorphic features and joint contractures. The prognosis is poor with all reported cases resulting in stillbirth or neonatal death (Navarro et al., 2014 ). Herein we report a neonate born to healthy, non-consanguineous parents from Greece. The pregnancy was uneventful until the 32nd week, when a routine scan showed severe fetal growth restriction with normal Doppler flows. The female proband was born at 33 weeks of gestation by caesarean section, due to premature rupture of membranes, as well as anhydramnios, IUGR, fetal hypokinesia and distress. Her birth weight was 1.36 kg (5th centile, −1.6SD), length was 41 cm (14th centile) and head circumference was 29 cm (14th centile). Apgar score was 4 and 8 at the 1st and 5th minutes, respectively. She required immediate intubation and admission to the neonatal intensive care unit. She had a large fontanelle, short palpebral fissures, a small pinched nose, low-set dysplastic ears and an open, O-shaped mouth (Fig. 1 ). She had multiple joint contractures. Her skin was rigid and translucent and progressively developed erosions and scaling. She did not have eyebrows or eyelashes. She had severe lung hypoplasia and died of respiratory insufficiency on the 22nd day of life.
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Affiliation(s)
- Athina Ververi
- 2nd Neonatal Department and Neonatal Intensive Care Unit
- Genetic Unit, 1st Department of Obstetrics and Gynecology, School of Medicine, Aristotle University of Thessaloniki, 'Papageorgiou' General Hospital
| | | | | | - Georgia Karagiannopoulou
- Pathology Department, School of Medicine, Aristotle University of Thessaloniki, AHEPA General Hospital
| | | | - Aikaterini Patsatsi
- 2nd Department of Dermatology and Venereology, School of Medicine, Aristotle University of Thessaloniki, 'Papageorgiou' General Hospital
| | | | - Abhimanyu Garg
- Division of Nutrition and Metabolic Diseases, Department of Internal Medicine and the Center for Human Nutrition; UT Southwestern Medical Center, Dallas, Texas, USA
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9
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Restrictive dermopathy: A baby with taut skin, facial dysmorphism, joint contractures, and pulmonary hypoplasia. JAAD Case Rep 2022; 30:41-43. [DOI: 10.1016/j.jdcr.2022.09.033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022] Open
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10
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Primmer SR, Liao CY, Kummert OMP, Kennedy BK. Lamin A to Z in normal aging. Aging (Albany NY) 2022; 14:8150-8166. [PMID: 36260869 DOI: 10.18632/aging.204342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2022] [Accepted: 08/31/2022] [Indexed: 11/25/2022]
Abstract
Almost since the discovery that mutations in the LMNA gene, encoding the nuclear structure components lamin A and C, lead to Hutchinson-Gilford progeria syndrome, people have speculated that lamins may have a role in normal aging. The most common HPGS mutation creates a splice variant of lamin A, progerin, which promotes accelerated aging pathology. While some evidence exists that progerin accumulates with normal aging, an increasing body of work indicates that prelamin A, a precursor of lamin A prior to C-terminal proteolytic processing, accumulates with age and may be a driver of normal aging. Prelamin A shares properties with progerin and is also linked to a rare progeroid disease, restrictive dermopathy. Here, we describe mechanisms underlying changes in prelamin A with aging and lay out the case that this unprocessed protein impacts normative aging. This is important since intervention strategies can be developed to modify this pathway as a means to extend healthspan and lifespan.
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Affiliation(s)
| | - Chen-Yu Liao
- The Buck Institute for Research on Aging, Novato, CA 94945, USA
| | | | - Brian K Kennedy
- Healthy Longevity Translational Research Programme, Yong Loo Lin School of Medicine, National University of Singapore, Singapore.,Centre for Healthy Longevity, National University Health System, Singapore.,Departments of Biochemistry and Physiology, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
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11
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Revertant Mosaicism in Genodermatoses: Natural Gene Therapy Right before Your Eyes. Biomedicines 2022; 10:biomedicines10092118. [PMID: 36140224 PMCID: PMC9495737 DOI: 10.3390/biomedicines10092118] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2022] [Revised: 08/23/2022] [Accepted: 08/23/2022] [Indexed: 11/19/2022] Open
Abstract
Revertant mosaicism (RM) is the intriguing phenomenon in which nature itself has successfully done what medical science is so eagerly trying to achieve: correcting the effect of disease-causing germline variants and thereby reversing the disease phenotype back to normal. RM was molecularly confirmed for the first time in a genodermatosis in 1997, the genetic skin condition junctional epidermolysis bullosa (EB). At that time, RM was considered an extraordinary phenomenon. However, several important discoveries have changed this conception in the past few decades. First, RM has now been identified in all major subtypes of EB. Second, RM has also been identified in many other genodermatoses. Third, a theoretical mathematical exercise concluded that reverse mutations should be expected in all patients with a recessive subtype of EB or any other genodermatosis. This has shifted the paradigm from RM being an extraordinary phenomenon to it being something that every physician working in the field of genodermatoses should be looking for in every patient. It has also raised hope for new treatment options in patients with genodermatoses. In this review, we summarize the current knowledge on RM and discuss the perspectives of RM for the future treatment of patients with genodermatoses.
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12
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Hutson J, Siu VM, Rupar CA. Raisonnement clinique : L’hydramnios comme marqueur d’un syndrome génétique fœtal dans la population des mennonites du Vieil Ordre au Canada. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2022; 44:803-807. [DOI: 10.1016/j.jogc.2022.05.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Accepted: 01/19/2022] [Indexed: 11/29/2022]
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13
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Stiekema M, Houben F, Verheyen F, Borgers M, Menzel J, Meschkat M, van Zandvoort MAMJ, Ramaekers FCS, Broers JLV. The Role of Lamins in the Nucleoplasmic Reticulum, a Pleiomorphic Organelle That Enhances Nucleo-Cytoplasmic Interplay. Front Cell Dev Biol 2022; 10:914286. [PMID: 35784476 PMCID: PMC9243388 DOI: 10.3389/fcell.2022.914286] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 05/24/2022] [Indexed: 12/15/2022] Open
Abstract
Invaginations of the nuclear membrane occur in different shapes, sizes, and compositions. Part of these pleiomorphic invaginations make up the nucleoplasmic reticulum (NR), while others are merely nuclear folds. We define the NR as tubular invaginations consisting of either both the inner and outer nuclear membrane, or only the inner nuclear membrane. Specifically, invaginations of both the inner and outer nuclear membrane are also called type II NR, while those of only the inner nuclear membrane are defined as type I NR. The formation and structure of the NR is determined by proteins associated to the nuclear membrane, which induce a high membrane curvature leading to tubular invaginations. Here we review and discuss the current knowledge of nuclear invaginations and the NR in particular. An increase in tubular invaginations of the nuclear envelope is associated with several pathologies, such as laminopathies, cancer, (reversible) heart failure, and Alzheimer’s disease. Furthermore, viruses can induce both type I and II NR. In laminopathies, the amount of A-type lamins throughout the nucleus is generally decreased or the organization of lamins or lamin-associated proteins is disturbed. Also, lamin overexpression or modulation of lamin farnesylation status impacts NR formation, confirming the importance of lamin processing in NR formation. Virus infections reorganize the nuclear lamina via (de)phosphorylation of lamins, leading to an uneven thickness of the nuclear lamina and in turn lobulation of the nuclear membrane and the formation of invaginations of the inner nuclear membrane. Since most studies on the NR have been performed with cell cultures, we present additional proof for the existence of these structures in vivo, focusing on a variety of differentiated cardiovascular and hematopoietic cells. Furthermore, we substantiate the knowledge of the lamin composition of the NR by super-resolution images of the lamin A/C and B1 organization. Finally, we further highlight the essential role of lamins in NR formation by demonstrating that (over)expression of lamins can induce aberrant NR structures.
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Affiliation(s)
- Merel Stiekema
- Department of Genetics and Cell Biology, Maastricht University Medical Centre, Maastricht, Netherlands
- GROW-School for Oncology and Reproduction, Maastricht University Medical Centre, Maastricht, Netherlands
| | - Frederik Houben
- Department of Genetics and Cell Biology, Maastricht University Medical Centre, Maastricht, Netherlands
- Department of Healthcare, PXL University College, Hasselt, Belgium
| | - Fons Verheyen
- Department of Genetics and Cell Biology, Maastricht University Medical Centre, Maastricht, Netherlands
| | - Marcel Borgers
- Department of Genetics and Cell Biology, Maastricht University Medical Centre, Maastricht, Netherlands
| | | | | | - Marc A. M. J. van Zandvoort
- Department of Genetics and Cell Biology, Maastricht University Medical Centre, Maastricht, Netherlands
- GROW-School for Oncology and Reproduction, Maastricht University Medical Centre, Maastricht, Netherlands
- CARIM-School for Cardiovascular Diseases, Maastricht University Medical Centre, Maastricht, Netherlands
- Institute for Molecular Cardiovascular Research IMCAR, RWTH Aachen University, Aachen, Germany
| | - Frans C. S. Ramaekers
- Department of Genetics and Cell Biology, Maastricht University Medical Centre, Maastricht, Netherlands
- GROW-School for Oncology and Reproduction, Maastricht University Medical Centre, Maastricht, Netherlands
| | - Jos L. V. Broers
- Department of Genetics and Cell Biology, Maastricht University Medical Centre, Maastricht, Netherlands
- GROW-School for Oncology and Reproduction, Maastricht University Medical Centre, Maastricht, Netherlands
- CARIM-School for Cardiovascular Diseases, Maastricht University Medical Centre, Maastricht, Netherlands
- *Correspondence: Jos L. V. Broers,
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14
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Zhang SL, Lin SZ, Zhou YQ, Wang WQ, Li JY, Wang C, Pang QM. Clinical manifestations and gene analysis of Hutchinson-Gilford progeria syndrome: A case report. World J Clin Cases 2022; 10:5018-5024. [PMID: 35801028 PMCID: PMC9198858 DOI: 10.12998/wjcc.v10.i15.5018] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Revised: 01/10/2022] [Accepted: 03/26/2022] [Indexed: 02/06/2023] Open
Abstract
BACKGROUND This case report describes a child with Hutchinson-Gilford progeria syndrome (HGPS, OMIM: 176670) caused by LMNA (OMIM: 150330) gene mutation, and we have previously analyzed the clinical manifestations and imaging characteristics of this case. After 1-year treatment and follow-up, we focus on analyzing the changes in the clinical manifestations and genetic diagnosis of the patient.
CASE SUMMARY In April 2020, a 2-year-old boy with HGPS was found to have an abnormal appearance, and growth and development lagged behind those of children of the same age. The child’s weight did not increase normally, the veins of the head were clearly visible, and he had shallow skin color and sparse yellow hair. Peripheral blood DNA samples obtained from the patient and his parents were sequenced using high-throughput whole-exosome sequencing, which was verified by Sanger sequencing. The results showed that there was a synonymous heterozygous mutation of C.1824 C>T (P. G608G) in the LMNA gene.
CONCLUSION Mutation of the LMNA gene provides a molecular basis for diagnosis of HGPS and genetic counseling of the family.
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Affiliation(s)
- Su-Li Zhang
- Department of Neuroscience, Hainan Women and Children's Medical Center, Haikou 570100, Hainan Province, China
| | - Shuang-Zhu Lin
- Diagnosis and Treatment Center for Children, First Affiliated Hospital to Changchun University of Chinese Medicine, Changchun 130021, Jilin Province, China
| | - Yan-Qiu Zhou
- Diagnosis and Treatment Center for Children, First Affiliated Hospital to Changchun University of Chinese Medicine, Changchun 130021, Jilin Province, China
| | - Wan-Qi Wang
- Changchun University of Chinese Medicine, Changchun 130000, Jilin Province, China
| | - Jia-Yi Li
- Changchun University of Chinese Medicine, Changchun 130000, Jilin Province, China
| | - Cui Wang
- Department of Neuroscience, Hainan Women and Children's Medical Center, Haikou 570100, Hainan Province, China
| | - Qi-Ming Pang
- Department of Neuroscience, Hainan Women and Children's Medical Center, Haikou 570100, Hainan Province, China
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15
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Hsu T, Yu P, Chang Y, Guevara BEK, Tsai M, Yang M, Tsai P, Lee JY, Chao S, Hsu C. Novel compound heterozygous indel
ZMPSTE24
mutations in a Taiwanese male infant with restrictive dermopathy. J Dermatol 2022; 49:e280-e282. [DOI: 10.1111/1346-8138.16404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Revised: 03/28/2022] [Accepted: 04/08/2022] [Indexed: 11/30/2022]
Affiliation(s)
- Tzu‐Chien Hsu
- Department of Dermatology, College of Medicine National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
| | - Pei‐Hsiu Yu
- Department of Obstetrics and Gynecology, College of Medicine National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
- Department of Obstetrics and Gynecology Kuo General Hospital Tainan Taiwan
| | - Yi‐Han Chang
- Department of Dermatology, College of Medicine National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
- International Research Center of Wound Repair and Regeneration (iWRR) National Cheng Kung University Tainan Taiwan
| | - Bryan Edgar K. Guevara
- Department of Dermatology, College of Medicine National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
- Department of Dermatology Southern Philippines Medical Center Davao Philippines
| | - Meng‐Che Tsai
- Department of Pediatrics, College of Medicine National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
| | - Mei‐Hui Yang
- Department of Dermatology, College of Medicine National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
| | - Pei‐Yin Tsai
- Department of Obstetrics and Gynecology, College of Medicine National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
| | - Julia Yu‐Yun Lee
- Department of Dermatology, College of Medicine National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
| | - Sheau‐Chiou Chao
- Department of Dermatology, College of Medicine National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
| | - Chao‐Kai Hsu
- Department of Dermatology, College of Medicine National Cheng Kung University Hospital, National Cheng Kung University Tainan Taiwan
- International Research Center of Wound Repair and Regeneration (iWRR) National Cheng Kung University Tainan Taiwan
- College of Medicine, Institute of Clinical Medicine National Cheng Kung University Tainan Taiwan
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16
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Rai M, Curley M, Coleman Z, Demontis F. Contribution of proteases to the hallmarks of aging and to age-related neurodegeneration. Aging Cell 2022; 21:e13603. [PMID: 35349763 PMCID: PMC9124314 DOI: 10.1111/acel.13603] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2022] [Revised: 03/10/2022] [Accepted: 03/13/2022] [Indexed: 12/20/2022] Open
Abstract
Protein quality control ensures the degradation of damaged and misfolded proteins. Derangement of proteostasis is a primary cause of aging and age-associated diseases. The ubiquitin-proteasome and autophagy-lysosome play key roles in proteostasis but, in addition to these systems, the human genome encodes for ~600 proteases, also known as peptidases. Here, we examine the role of proteases in aging and age-related neurodegeneration. Proteases are present across cell compartments, including the extracellular space, and their substrates encompass cellular constituents, proteins with signaling functions, and misfolded proteins. Proteolytic processing by proteases can lead to changes in the activity and localization of substrates or to their degradation. Proteases cooperate with the autophagy-lysosome and ubiquitin-proteasome systems but also have independent proteolytic roles that impact all hallmarks of cellular aging. Specifically, proteases regulate mitochondrial function, DNA damage repair, cellular senescence, nutrient sensing, stem cell properties and regeneration, protein quality control and stress responses, and intercellular signaling. The capacity of proteases to regulate cellular functions translates into important roles in preserving tissue homeostasis during aging. Consequently, proteases influence the onset and progression of age-related pathologies and are important determinants of health span. Specifically, we examine how certain proteases promote the progression of Alzheimer's, Huntington's, and/or Parkinson's disease whereas other proteases protect from neurodegeneration. Mechanistically, cleavage by proteases can lead to the degradation of a pathogenic protein and hence impede disease pathogenesis. Alternatively, proteases can generate substrate byproducts with increased toxicity, which promote disease progression. Altogether, these studies indicate the importance of proteases in aging and age-related neurodegeneration.
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Affiliation(s)
- Mamta Rai
- Department of Developmental NeurobiologySt. Jude Children’s Research HospitalMemphisTennesseeUSA
| | - Michelle Curley
- Department of Developmental NeurobiologySt. Jude Children’s Research HospitalMemphisTennesseeUSA
| | - Zane Coleman
- Department of Developmental NeurobiologySt. Jude Children’s Research HospitalMemphisTennesseeUSA
| | - Fabio Demontis
- Department of Developmental NeurobiologySt. Jude Children’s Research HospitalMemphisTennesseeUSA
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17
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Pradeep I, Gowrishankar K, Shanmugasundaram L. Lethal Restrictive Dermopathy with ZMPSTE24 Mutation. Pediatr Dev Pathol 2022; 25:327-329. [PMID: 34961372 DOI: 10.1177/10935266211065316] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Lethal restrictive dermopathy is genodermatoses associated with lamin protein defects resulting in connective tissue abnormalities of skin, musculoskeletal, and adipose tissue. We report one such case with a mutation in the ZMPSTE24 gene which is involved in lamin protein synthesis, resulting in fetal akinesia or hypokinesia deformation sequence. Early recognition in the perinatal period of distinctive clinical and skin histological features followed by molecular diagnosis enabled genetic counseling for the affected family.
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Affiliation(s)
- Immanuel Pradeep
- Department of Pathology and Laboratory Medicine, 596687A.I.I.M.S Bibinagar, Hyderabad, India
| | - Kalpana Gowrishankar
- Department of Medical Genetics, 29981Kanchi Kamakoti Childs Trust Hospital, Chennai, India
| | - Lakshmi Shanmugasundaram
- Department of Obstetrics and Gynaecology, Institute of Reproductive Medicine, 29848Madras Medical Mission, Chennai, India
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18
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González-Blanco C, Marqués P, Burillo J, Jiménez B, García G, Benito M, Guillén C. Cell immortalization facilitates prelamin A clearance by increasing both cell proliferation and autophagic flux. Aging (Albany NY) 2022; 14:2047-2061. [PMID: 35306483 PMCID: PMC8954962 DOI: 10.18632/aging.203943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2021] [Accepted: 01/25/2022] [Indexed: 12/03/2022]
Abstract
Hutchinson-Gilford Progeria Syndrome is an ultrarare disease which is characterized by an accelerated senescence phenotype with deleterious consequences to people suffering this pathology. The production of an abnormal protein derived from lamin A, called progerin, presents a farnesylated domain, which is not eliminated by the causal mutation of the disease, and accumulates in the interior of the nucleus, provoking a disruption of nuclear membrane, chromatin organization and an altered gene expression. The mutation in these patients occurs in a single nucleotide change, which creates a de novo splicing site, producing a shorter version of the protein. Apart from this mutation, an alteration in the metalloproteinase Zmpste24, involved in the maturation of lamin A, causing a similar alteration than in progeria. However, in this case, patients accumulate a protein, called prelamin A, which generates similar alterations in the nucleus than progerin. The reduction of prelamin A protein levels facilitates the recovery of the phenotype in different mice models of the disease, reducing the aging process. Different strategies have been studied for eliminating this toxic protein. Here, we report that immortalization of primary cells derived from the Zmpste24 KO mice, facilitates prelamin A degradation by different mechanisms, being essential, the enhancing proliferative capacity that the immortalized cells present. Then, these data suggest that using different treatments for increasing proliferative capacity of these cells, potentially could have a beneficial effect, facilitating prelamin A toxicity.
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Affiliation(s)
| | - Patricia Marqués
- Department of Biochemistry, Complutense University, Madrid, Spain
| | - Jesús Burillo
- Department of Biochemistry, Complutense University, Madrid, Spain
- Mechanisms of Insulin Resistance (MOIR2), General Direction of Universities and Investigation (CCMM), Madrid, Spain
| | - Beatriz Jiménez
- Department of Biochemistry, Complutense University, Madrid, Spain
| | - Gema García
- Department of Biochemistry, Complutense University, Madrid, Spain
| | - Manuel Benito
- Department of Biochemistry, Complutense University, Madrid, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
- Mechanisms of Insulin Resistance (MOIR2), General Direction of Universities and Investigation (CCMM), Madrid, Spain
| | - Carlos Guillén
- Department of Biochemistry, Complutense University, Madrid, Spain
- Centro de Investigación Biomédica en Red (CIBER) de Diabetes y Enfermedades Metabólicas Asociadas (CIBERDEM), Madrid, Spain
- Mechanisms of Insulin Resistance (MOIR2), General Direction of Universities and Investigation (CCMM), Madrid, Spain
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19
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Clinical Conundrum: Polyhydramnios as a marker for a fetal genetic syndrome in the Canadian Old Order Mennonite population. JOURNAL OF OBSTETRICS AND GYNAECOLOGY CANADA 2022; 44:798-802. [DOI: 10.1016/j.jogc.2022.01.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 01/17/2022] [Accepted: 01/19/2022] [Indexed: 10/19/2022]
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20
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Scott JB, Yanes AF, Vivar KL, Yun D, Wagner A, Kruse L, Mancini AJ. Restrictive dermopathy: Three new patients with ZMPSTE24 mutations and a review of the literature. Pediatr Dermatol 2021; 38:1535-1540. [PMID: 34647350 DOI: 10.1111/pde.14822] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Restrictive dermopathy (RD) is a rare and lethal laminopathy caused by mutations in LMNA or ZMPSTE24. This series reports 3 patients with RD and reviews the literature of the 113 previously reported cases, including highlights of the unique constellation of clinical findings in RD, as well as histologic, radiographic, and genetic features. Early recognition of these characteristic features is vital to establish a prompt diagnosis and provide adequate family counseling for this terminal condition.
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Affiliation(s)
- Jennifer B Scott
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Arianna F Yanes
- Department of Dermatology, University of Pennsylvania, Philadelphia, PA, USA
| | - Karina L Vivar
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.,Division of Dermatology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Duri Yun
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.,Division of Dermatology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Annette Wagner
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.,Division of Dermatology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Lacey Kruse
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.,Division of Dermatology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
| | - Anthony J Mancini
- Department of Dermatology, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA.,Division of Dermatology, Ann & Robert H. Lurie Children's Hospital of Chicago, Chicago, IL, USA.,Department of Pediatrics, Feinberg School of Medicine, Northwestern University, Chicago, IL, USA
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21
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Preclinical Advances of Therapies for Laminopathies. J Clin Med 2021; 10:jcm10214834. [PMID: 34768351 PMCID: PMC8584472 DOI: 10.3390/jcm10214834] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2021] [Revised: 10/19/2021] [Accepted: 10/19/2021] [Indexed: 11/29/2022] Open
Abstract
Laminopathies are a group of rare disorders due to mutation in LMNA gene. Depending on the mutation, they may affect striated muscles, adipose tissues, nerves or are multisystemic with various accelerated ageing syndromes. Although the diverse pathomechanisms responsible for laminopathies are not fully understood, several therapeutic approaches have been evaluated in patient cells or animal models, ranging from gene therapies to cell and drug therapies. This review is focused on these therapies with a strong focus on striated muscle laminopathies and premature ageing syndromes.
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22
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Nuclear Dynamics and Chromatin Structure: Implications for Pancreatic Cancer. Cells 2021; 10:cells10102624. [PMID: 34685604 PMCID: PMC8534098 DOI: 10.3390/cells10102624] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2021] [Revised: 09/20/2021] [Accepted: 09/27/2021] [Indexed: 12/14/2022] Open
Abstract
Changes in nuclear shape have been extensively associated with the dynamics and functionality of cancer cells. In most normal cells, nuclei have a regular ellipsoid shape and minimal variation in nuclear size; however, an irregular nuclear contour and abnormal nuclear size is often observed in cancer, including pancreatic cancer. Furthermore, alterations in nuclear morphology have become the 'gold standard' for tumor staging and grading. Beyond the utility of altered nuclear morphology as a diagnostic tool in cancer, the implications of altered nuclear structure for the biology and behavior of cancer cells are profound as changes in nuclear morphology could impact cellular responses to physical strain, adaptation during migration, chromatin organization, and gene expression. Here, we aim to highlight and discuss the factors that regulate nuclear dynamics and their implications for pancreatic cancer biology.
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23
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Abstract
The cell nucleus is best known as the container of the genome. Its envelope provides a barrier for passive macromolecule diffusion, which enhances the control of gene expression. As its largest and stiffest organelle, the nucleus also defines the minimal space requirements of a cell. Internal or external pressures that deform a cell to its physical limits cause a corresponding nuclear deformation. Evidence is consolidating that the nucleus, in addition to its genetic functions, serves as a physical sensing device for critical cell body deformation. Nuclear mechanotransduction allows cells to adapt their acute behaviors, mechanical stability, paracrine signaling, and fate to their physical surroundings. This review summarizes the basic chemical and mechanical properties of nuclear components, and how these properties are thought to be utilized for mechanosensing. Expected final online publication date for the Annual Review of Cell and Developmental Biology, Volume 37 is October 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.
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Affiliation(s)
- Philipp Niethammer
- Cell Biology Program, Memorial Sloan Kettering Cancer Center, New York, NY 10065, USA;
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24
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Coppedè F. Mutations Involved in Premature-Ageing Syndromes. APPLICATION OF CLINICAL GENETICS 2021; 14:279-295. [PMID: 34103969 PMCID: PMC8180271 DOI: 10.2147/tacg.s273525] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/18/2021] [Accepted: 05/17/2021] [Indexed: 12/12/2022]
Abstract
Premature-ageing syndromes are a heterogeneous group of rare genetic disorders resembling features of accelerated ageing and resulting from mutations in genes coding for proteins required for nuclear lamina architecture, DNA repair and maintenance of genome stability, mitochondrial function and other cellular processes. Hutchinson–Gilford progeria syndrome (HGPS) and Werner syndrome (WS) are two of the best-characterized progeroid syndromes referred to as childhood- and adulthood-progeria, respectively. This article provides an updated overview of the mutations leading to HGPS, WS, and to the spectrum of premature-ageing laminopathies ranging in severity from congenital restrictive dermopathy (RD) to adult-onset atypical WS, including RD-like laminopathies, typical and atypical HGPS, more and less severe forms of mandibuloacral dysplasia (MAD), Néstor-Guillermo progeria syndrome (NGPS), atypical WS, and atypical progeroid syndromes resembling features of HGPS and/or MAD but resulting from impaired DNA repair or mitochondrial functions, including mandibular hypoplasia, deafness, progeroid features, and lipodystrophy (MDPL) syndrome and mandibuloacral dysplasia associated to MTX2 (MADaM). The overlapping signs and symptoms among different premature-ageing syndromes, resulting from both a large genetic heterogeneity and shared pathological pathways underlying these conditions, require an expert clinical evaluation in specialized centers paralleled by next-generation sequencing of panels of genes involved in these disorders in order to establish as early as possible an accurate clinical and molecular diagnosis for a proper patient management.
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Affiliation(s)
- Fabio Coppedè
- Department of Translational Research and of New Surgical and Medical Technologies, University of Pisa, Pisa, Italy
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25
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Schnabel F, Kornak U, Wollnik B. Premature aging disorders: A clinical and genetic compendium. Clin Genet 2020; 99:3-28. [PMID: 32860237 DOI: 10.1111/cge.13837] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2020] [Revised: 08/21/2020] [Accepted: 08/24/2020] [Indexed: 12/22/2022]
Abstract
Progeroid disorders make up a heterogeneous group of very rare hereditary diseases characterized by clinical signs that often mimic physiological aging in a premature manner. Apart from Hutchinson-Gilford progeria syndrome, one of the best-investigated progeroid disorders, a wide spectrum of other premature aging phenotypes exist, which differ significantly in their clinical presentation and molecular pathogenesis. Next-generation sequencing (NGS)-based approaches have made it feasible to determine the molecular diagnosis in the early stages of a disease. Nevertheless, a broad clinical knowledge on these disorders and their associated symptoms is still fundamental for a comprehensive patient management and for the interpretation of variants of unknown significance from NGS data sets. This review provides a detailed overview on characteristic clinical features and underlying molecular genetics of well-known as well as only recently identified premature aging disorders and also highlights novel findings towards future therapeutic options.
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Affiliation(s)
- Franziska Schnabel
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Uwe Kornak
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany
| | - Bernd Wollnik
- Institute of Human Genetics, University Medical Center Göttingen, Göttingen, Germany.,Cluster of Excellence "Multiscale Bioimaging: From Molecular Machines to Networks of Excitable cells" (MBExC), University of Göttingen, Göttingen, Germany
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26
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Marcelot A, Worman HJ, Zinn-Justin S. Protein structural and mechanistic basis of progeroid laminopathies. FEBS J 2020; 288:2757-2772. [PMID: 32799420 DOI: 10.1111/febs.15526] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2020] [Accepted: 07/30/2020] [Indexed: 12/14/2022]
Abstract
Progeroid laminopathies are characterized by the premature appearance of certain signs of physiological aging in a subset of tissues. They are caused by mutations in genes coding for A-type lamins or lamin-binding proteins. Here, we review how different mutations causing progeroid laminopathies alter protein structure or protein-protein interactions and how these impact on mechanisms that protect cell viability and function. One group of progeroid laminopathies, which includes Hutchinson-Gilford progeria syndrome, is characterized by accumulation of unprocessed prelamin A or variants. These are caused by mutations in the A-type lamin gene (LMNA), altering prelamin A itself, or in ZMPSTE24, encoding an endoprotease involved in its processing. The abnormally expressed farnesylated proteins impact on various cellular processes that may contribute to progeroid phenotypes. Other LMNA mutations lead to the production of nonfarnesylated A-type lamin variants with amino acid substitutions in solvent-exposed hot spots located mainly in coil 1B and the immunoglobulin fold domain. Dominant missense mutations might reinforce interactions between lamin domains, thus giving rise to excessively stabilized filament networks. Recessive missense mutations in A-type lamins and barrier-to-autointegration factor (BAF) causing progeroid disorders are found at the interface between these interacting proteins. The amino acid changes decrease the binding affinity of A-type lamins for BAF, which may contribute to lamina disorganization, as well as defective repair of mechanically induced nuclear envelope rupture. Targeting these molecular alterations in A-type lamins and associated proteins identified through structural biology studies could facilitate the design of therapeutic strategies to treat patients with rare but severe progeroid laminopathies.
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Affiliation(s)
- Agathe Marcelot
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Uni Paris-Sud, Uni Paris-Saclay, Gif-sur-Yvette Cedex, France
| | - Howard J Worman
- Department of Medicine and Department of Pathology and Cell Biology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY, USA
| | - Sophie Zinn-Justin
- Institute for Integrative Biology of the Cell (I2BC), CEA, CNRS, Uni Paris-Sud, Uni Paris-Saclay, Gif-sur-Yvette Cedex, France
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27
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Cenni V, Capanni C, Mattioli E, Schena E, Squarzoni S, Bacalini MG, Garagnani P, Salvioli S, Franceschi C, Lattanzi G. Lamin A involvement in ageing processes. Ageing Res Rev 2020; 62:101073. [PMID: 32446955 DOI: 10.1016/j.arr.2020.101073] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Revised: 03/05/2020] [Accepted: 04/11/2020] [Indexed: 12/29/2022]
Abstract
Lamin A, a main constituent of the nuclear lamina, is the major splicing product of the LMNA gene, which also encodes lamin C, lamin A delta 10 and lamin C2. Involvement of lamin A in the ageing process became clear after the discovery that a group of progeroid syndromes, currently referred to as progeroid laminopathies, are caused by mutations in LMNA gene. Progeroid laminopathies include Hutchinson-Gilford Progeria, Mandibuloacral Dysplasia, Atypical Progeria and atypical-Werner syndrome, disabling and life-threatening diseases with accelerated ageing, bone resorption, lipodystrophy, skin abnormalities and cardiovascular disorders. Defects in lamin A post-translational maturation occur in progeroid syndromes and accumulated prelamin A affects ageing-related processes, such as mTOR signaling, epigenetic modifications, stress response, inflammation, microRNA activation and mechanosignaling. In this review, we briefly describe the role of these pathways in physiological ageing and go in deep into lamin A-dependent mechanisms that accelerate the ageing process. Finally, we propose that lamin A acts as a sensor of cell intrinsic and environmental stress through transient prelamin A accumulation, which triggers stress response mechanisms. Exacerbation of lamin A sensor activity due to stably elevated prelamin A levels contributes to the onset of a permanent stress response condition, which triggers accelerated ageing.
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Affiliation(s)
- Vittoria Cenni
- CNR Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Cristina Capanni
- CNR Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Elisabetta Mattioli
- CNR Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Elisa Schena
- CNR Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Stefano Squarzoni
- CNR Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | | | - Paolo Garagnani
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy; Clinical Chemistry, Department of Laboratory Medicine, Karolinska Institutet at Huddinge, University Hospital, Stockholm, Sweden
| | - Stefano Salvioli
- Department of Experimental, Diagnostic and Specialty Medicine (DIMES), University of Bologna, Bologna, Italy; Interdepartmental Center Alma Mater Research Institute on Global Challenges and Climate Changes, University of Bologna, Bologna, Italy
| | - Claudio Franceschi
- Lobachevsky State University of Nizhny Novgorod, Nizhny Novgorod, Russia
| | - Giovanna Lattanzi
- CNR Institute of Molecular Genetics "Luigi Luca Cavalli-Sforza", Unit of Bologna, Bologna, Italy; IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy.
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28
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Xiong L, Zhao K, Cao Y, Guo HH, Pan JX, Yang X, Ren X, Mei L, Xiong WC. Linking skeletal muscle aging with osteoporosis by lamin A/C deficiency. PLoS Biol 2020; 18:e3000731. [PMID: 32479501 PMCID: PMC7310860 DOI: 10.1371/journal.pbio.3000731] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2019] [Revised: 06/23/2020] [Accepted: 05/14/2020] [Indexed: 01/19/2023] Open
Abstract
The nuclear lamina protein lamin A/C is a key component of the nuclear envelope. Mutations in the lamin A/C gene (LMNA) are identified in patients with various types of laminopathy-containing diseases, which have features of accelerated aging and osteoporosis. However, the underlying mechanisms for laminopathy-associated osteoporosis remain largely unclear. Here, we provide evidence that loss of lamin A/C in skeletal muscles, but not osteoblast (OB)-lineage cells, results in not only muscle aging-like deficit but also trabecular bone loss, a feature of osteoporosis. The latter is due in large part to elevated bone resorption. Further cellular studies show an increase of osteoclast (OC) differentiation in cocultures of bone marrow macrophages/monocytes (BMMs) and OBs after treatment with the conditioned medium (CM) from lamin A/C-deficient muscle cells. Antibody array screening analysis of the CM proteins identifies interleukin (IL)-6, whose expression is markedly increased in lamin A/C-deficient muscles. Inhibition of IL-6 by its blocking antibody in BMM-OB cocultures diminishes the increase of osteoclastogenesis. Knockout (KO) of IL-6 in muscle lamin A/C-KO mice diminishes the deficits in trabecular bone mass but not muscle. Further mechanistic studies reveal an elevation of cellular senescence marked by senescence-associated beta-galactosidase (SA-β-gal), p16Ink4a, and p53 in lamin A/C-deficient muscles and C2C12 muscle cells, and the p16Ink4a may induce senescence-associated secretory phenotype (SASP) and IL-6 expression. Taken together, these results suggest a critical role for skeletal muscle lamin A/C to prevent cellular senescence, IL-6 expression, hyperosteoclastogenesis, and trabecular bone loss, uncovering a pathological mechanism underlying the link between muscle aging/senescence and osteoporosis.
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Affiliation(s)
- Lei Xiong
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio, United States of America
- Louis Stoke VA Medical Center, Cleveland, Ohio, United States of America
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - Kai Zhao
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio, United States of America
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - Yu Cao
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - Hao-Han Guo
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio, United States of America
| | - Jin-Xiu Pan
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio, United States of America
- Louis Stoke VA Medical Center, Cleveland, Ohio, United States of America
| | - Xiao Yang
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - Xiao Ren
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio, United States of America
| | - Lin Mei
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio, United States of America
- Louis Stoke VA Medical Center, Cleveland, Ohio, United States of America
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, United States of America
| | - Wen-Cheng Xiong
- Department of Neurosciences, School of Medicine, Case Western Reserve University, Cleveland, Ohio, United States of America
- Louis Stoke VA Medical Center, Cleveland, Ohio, United States of America
- Department of Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, Georgia, United States of America
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29
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Lamin A/C Mechanotransduction in Laminopathies. Cells 2020; 9:cells9051306. [PMID: 32456328 PMCID: PMC7291067 DOI: 10.3390/cells9051306] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 05/20/2020] [Accepted: 05/22/2020] [Indexed: 12/14/2022] Open
Abstract
Mechanotransduction translates forces into biological responses and regulates cell functionalities. It is implicated in several diseases, including laminopathies which are pathologies associated with mutations in lamins and lamin-associated proteins. These pathologies affect muscle, adipose, bone, nerve, and skin cells and range from muscular dystrophies to accelerated aging. Although the exact mechanisms governing laminopathies and gene expression are still not clear, a strong correlation has been found between cell functionality and nuclear behavior. New theories base on the direct effect of external force on the genome, which is indeed sensitive to the force transduced by the nuclear lamina. Nuclear lamina performs two essential functions in mechanotransduction pathway modulating the nuclear stiffness and governing the chromatin remodeling. Indeed, A-type lamin mutation and deregulation has been found to affect the nuclear response, altering several downstream cellular processes such as mitosis, chromatin organization, DNA replication-transcription, and nuclear structural integrity. In this review, we summarize the recent findings on the molecular composition and architecture of the nuclear lamina, its role in healthy cells and disease regulation. We focus on A-type lamins since this protein family is the most involved in mechanotransduction and laminopathies.
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30
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Lessel I, Chen MJ, Lüttgen S, Arndt F, Fuchs S, Meien S, Thiele H, Jones JR, Shaw BR, Crossman DK, Nürnberg P, Korf BR, Kubisch C, Lessel D. Two novel cases further expand the phenotype of TOR1AIP1-associated nuclear envelopathies. Hum Genet 2020; 139:483-498. [PMID: 32055997 PMCID: PMC7078146 DOI: 10.1007/s00439-019-02105-6] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2019] [Accepted: 12/22/2019] [Indexed: 12/19/2022]
Abstract
Biallelic variants in TOR1AIP1, encoding the integral nuclear membrane protein LAP1 (lamina-associated polypeptide 1) with two functional isoforms LAP1B and LAP1C, have initially been linked to muscular dystrophies with variable cardiac and neurological impairment. Furthermore, a recurrent homozygous nonsense alteration, resulting in loss of both LAP1 isoforms, was identified in seven likely related individuals affected by multisystem anomalies with progeroid-like appearance and lethality within the 1st decade of life. Here, we have identified compound heterozygosity in TOR1AIP1 affecting both LAP1 isoforms in two unrelated individuals affected by congenital bilateral hearing loss, ventricular septal defect, bilateral cataracts, mild to moderate developmental delay, microcephaly, mandibular hypoplasia, short stature, progressive muscular atrophy, joint contractures and severe chronic heart failure, with much longer survival. Cellular characterization of primary fibroblasts of one affected individual revealed absence of both LAP1B and LAP1C, constitutively low lamin A/C levels, aberrant nuclear morphology including nuclear cytoplasmic channels, and premature senescence, comparable to findings in other progeroid forms of nuclear envelopathies. We additionally observed an abnormal activation of the extracellular signal-regulated kinase 1/2 (ERK 1/2). Ectopic expression of wild-type TOR1AIP1 mitigated these cellular phenotypes, providing further evidence for the causal role of identified genetic variants. Altogether, we thus further expand the TOR1AIP1-associated phenotype by identifying individuals with biallelic loss-of-function variants who survived beyond the 1st decade of life and reveal novel molecular consequences underlying the TOR1AIP1-associated disorders.
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Affiliation(s)
- Ivana Lessel
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Mei-Jan Chen
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, 36394, USA
| | - Sabine Lüttgen
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Florian Arndt
- Department for Pediatric Cardiology, University Heart Center Hamburg, University Medical Center Hamburg-Eppendorf, 20246, Hamburg, Germany
| | - Sigrid Fuchs
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Stefanie Meien
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Holger Thiele
- Cologne Center for Genomics, University of Cologne, 50931, Cologne, Germany
| | - Julie R Jones
- Molecular Diagnostic Laboratory, Greenwood Genetic Center, Greenwood, SC, 29646, USA
| | - Brandon R Shaw
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, 36394, USA
| | - David K Crossman
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, 36394, USA
| | - Peter Nürnberg
- Cologne Center for Genomics, University of Cologne, 50931, Cologne, Germany.,Center for Molecular Medicine Cologne, University of Cologne, 50931, Cologne, Germany.,Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases, University of Cologne, 50931, Cologne, Germany
| | - Bruce R Korf
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL, 36394, USA
| | - Christian Kubisch
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany
| | - Davor Lessel
- Institute of Human Genetics, University Medical Center Hamburg-Eppendorf, Martinistrasse 52, 20246, Hamburg, Germany.
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31
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Saxena S, Kumar S. Pharmacotherapy to gene editing: potential therapeutic approaches for Hutchinson-Gilford progeria syndrome. GeroScience 2020; 42:467-494. [PMID: 32048129 DOI: 10.1007/s11357-020-00167-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2019] [Accepted: 02/04/2020] [Indexed: 12/11/2022] Open
Abstract
Hutchinson-Gilford progeria syndrome (HGPS), commonly called progeria, is an extremely rare disorder that affects only one child per four million births. It is characterized by accelerated aging in affected individuals leading to premature death at an average age of 14.5 years due to cardiovascular complications. The main cause of HGPS is a sporadic autosomal dominant point mutation in LMNA gene resulting in differently spliced lamin A protein known as progerin. Accumulation of progerin under nuclear lamina and activation of its downstream effectors cause perturbation in cellular morphology and physiology which leads to a systemic disorder that mainly impairs the cardiovascular system, bones, skin, and overall growth. Till now, no cure has been found for this catastrophic disorder; however, several therapeutic strategies are under development. The current review focuses on the overall progress in the field of therapeutic approaches for the management/cure of HGPS. We have also discussed the new disease models that have been developed for the study of this rare disorder. Moreover, we have highlighted the therapeutic application of extracellular vesicles derived from stem cells against aging and aging-related disorders and, therefore, suggest the same for the treatment of HGPS.
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Affiliation(s)
- Saurabh Saxena
- Department of Medical Laboratory Sciences, Lovely Professional University, Jalandhar - Delhi G.T. Road, Phagwara, Punjab, 144411, India.
| | - Sanjeev Kumar
- Faculty of Technology and Sciences, Lovely Professional University, Jalandhar - Delhi G.T. Road, Phagwara, Punjab, 144411, India
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32
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Viraraghavan VR, Sanke S, Mendiratta V, Dewan A, Kumar A, Pangti R. Restrictive Dermopathy - A Rare Congenital Skin Disorder. Indian J Dermatol 2020; 65:519-521. [PMID: 33487711 PMCID: PMC7810072 DOI: 10.4103/ijd.ijd_554_18] [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] [Indexed: 11/06/2022] Open
Abstract
Restrictive dermopathy is a rare, autosomal recessive, lethal congenital skin disorder. This congenital genodermatosis could be mistaken for various other similar skin disorders. Diagnosis is a must in the context of genetic counseling for the subsequent pregnancy. We herein report a preterm male neonate with restrictive dermopathy, with additional feature of multiple bone fractures.
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Affiliation(s)
- V R Viraraghavan
- Department of Neonatology, Kalawati Saran Children Hospital and Lady Hardinge Medical College, New Delhi, India
| | - Sarita Sanke
- Department of Dermatology, Lady Hardinge Medical College, New Delhi, India
| | - Vibhu Mendiratta
- Department of Dermatology, Lady Hardinge Medical College, New Delhi, India
| | - Aditi Dewan
- Department of Pathology, Govind Ballabh Pant Institute of Post Graduate Medical Education and Research, New Delhi, India
| | - Ajay Kumar
- Department of Neonatology, Kalawati Saran Children Hospital and Lady Hardinge Medical College, New Delhi, India
| | - Rashi Pangti
- Department of Dermatology, Lady Hardinge Medical College, New Delhi, India
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Grelet M, Blanck V, Sigaudy S, Philip N, Giuliano F, Khachnaoui K, Morel G, Grotto S, Sophie J, Poirsier C, Lespinasse J, Alric L, Calvas P, Chalhoub G, Layet V, Molin A, Colson C, Marsili L, Edery P, Lévy N, De Sandre-Giovannoli A. Outcomes of 4 years of molecular genetic diagnosis on a panel of genes involved in premature aging syndromes, including laminopathies and related disorders. Orphanet J Rare Dis 2019; 14:288. [PMID: 31829210 PMCID: PMC6907233 DOI: 10.1186/s13023-019-1189-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2019] [Accepted: 08/30/2019] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Segmental progeroid syndromes are a heterogeneous group of rare and often severe genetic disorders that have been studied since the twentieth century. These progeroid syndromes are defined as segmental because only some of the features observed during natural aging are accelerated. METHODS Since 2015, the Molecular Genetics Laboratory in Marseille La Timone Hospital proposes molecular diagnosis of premature aging syndromes including laminopathies and related disorders upon NGS sequencing of a panel of 82 genes involved in these syndromes. We analyzed the results obtained in 4 years on 66 patients issued from France and abroad. RESULTS Globally, pathogenic or likely pathogenic variants (ACMG class 5 or 4) were identified in about 1/4 of the cases; among these, 9 pathogenic variants were novel. On the other hand, the diagnostic yield of our panel was over 60% when the patients were addressed upon a nosologically specific clinical suspicion, excepted for connective tissue disorders, for which clinical diagnosis may be more challenging. Prenatal testing was proposed to 3 families. We additionally detected 16 variants of uncertain significance and reclassified 3 of them as benign upon segregation analysis in first degree relatives. CONCLUSIONS High throughput sequencing using the Laminopathies/ Premature Aging disorders panel allowed molecular diagnosis of rare disorders associated with premature aging features and genetic counseling for families, representing an interesting first-level analysis before whole genome sequencing may be proposed, as a future second step, by the National high throughput sequencing platforms ("Medicine France Genomics 2025" Plan), in families without molecular diagnosis.
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Affiliation(s)
- Maude Grelet
- Department of Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille Univ, INSERM, MMG, Marseille, France
| | - Véronique Blanck
- Department of Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France
| | - Sabine Sigaudy
- Department of Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille Univ, INSERM, MMG, Marseille, France
| | - Nicole Philip
- Department of Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille Univ, INSERM, MMG, Marseille, France
| | | | | | - Godelieve Morel
- Hospices Civils de Lyon, Genetic Department and National HHT Reference Center, Femme-Mère-Enfants Hospital, F-69677, Bron, France.,Université Claude Bernard Lyon 1, F-69100, Villeurbanne, France
| | - Sarah Grotto
- Genetics Department, AP-HP, Robert-Debré University Hospital, Paris, France
| | - Julia Sophie
- Department of Medical Genetics, CHU Toulouse, Purpan Hospital, 31059, Toulouse, France
| | - Céline Poirsier
- Department of Genetics, Reims University Hospital, Reims, France
| | - James Lespinasse
- Department of Genetics, Centre Hospitalier de Chambéry- Hôtel-dieu, Chambery, France
| | - Laurent Alric
- Internal Medicine, CHU Toulouse, Rangueil Hospital, Toulouse 3 University Hospital Center, Toulouse, France
| | - Patrick Calvas
- Department of Medical Genetics, CHU Toulouse, Purpan Hospital, 31059, Toulouse, France
| | | | - Valérie Layet
- Department of Genetics, Le Havre Hospital, F76600, Le Havre, France
| | - Arnaud Molin
- Department of Genetics, CHU de Caen, Avenue de la Cote de Nacre, 14000, Caen, France
| | - Cindy Colson
- Department of Genetics, CHU de Caen, Avenue de la Cote de Nacre, 14000, Caen, France
| | - Luisa Marsili
- Department of Clinical Genetics, Lille University Hospital, CHU, Lille, France
| | - Patrick Edery
- Hospices Civils de Lyon, Genetic Department and National HHT Reference Center, Femme-Mère-Enfants Hospital, F-69677, Bron, France.,Université Claude Bernard Lyon 1, F-69100, Villeurbanne, France
| | - Nicolas Lévy
- Department of Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France.,Aix Marseille Univ, INSERM, MMG, Marseille, France.,CRB-TAC (Biological Ressource Center-Tissues, DNA, Cells), Assistance Publique Hopitaux de Marseille, Marseille, France
| | - Annachiara De Sandre-Giovannoli
- Department of Medical Genetics, Assistance Publique Hopitaux de Marseille, Marseille, France. .,Aix Marseille Univ, INSERM, MMG, Marseille, France. .,CRB-TAC (Biological Ressource Center-Tissues, DNA, Cells), Assistance Publique Hopitaux de Marseille, Marseille, France.
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34
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Varjú C, Kumánovics G, Czirják L, Matucci-Cerinic M, Minier T. Sclerodermalike syndromes: Great imitators. Clin Dermatol 2019; 38:235-249. [PMID: 32513403 DOI: 10.1016/j.clindermatol.2019.10.010] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Sclerodermalike syndromes (SLSs) comprise diseases with mucin deposition (eg, scleromyxedema, scleredema), with eosinophilia (eg, eosinophilic fasciitis), metabolic or biochemical abnormalities (eg, nephrogenic systemic fibrosis), or endocrine disorders (eg, POEMS syndrome, or polyneuropathy, organomegaly, endocrinopathy, monoclonal lymphoproliferative disorder, and hypothyroidism). Chronic graft-versus-host disease may also show sclerodermalike skin changes. Inherited progeria syndromes with early aging (eg, Werner syndrome) and a heterogeneous group of hereditary disorders with either skin thickening (eg, stiff skin syndrome) or atrophy and tightening (eg, acrogeria) can also imitate classic systemic sclerosis (SSc). In addition, SLSs can be provoked by several drugs, chemicals, or even physical injury (eg, trauma, vibration stress, radiation). In SLSs, the distribution of skin involvement seems to be atypical compared with SSc. The acral skin involvement is usually missing, and lack of Raynaud phenomenon, scleroderma-specific antinuclear antibodies, the absence of scleroderma capillary pattern, and internal organ manifestations indicate the presence of an SLS. Skin involvement is sometimes nodular, and the underlying tissues can also be affected. For the differential diagnosis, a skin biopsy of the deeper layers including fascia and muscle is required. Histology does not always allow differentiation between SSc and SLSs; therefore, the diagnosis is often based on the distribution, quality of cutaneous involvement, and other accompanying clinical features.
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Affiliation(s)
- Cecília Varjú
- Department of Rheumatology and Immunology, University of Pécs Clinical Center, Pecs, Hungary
| | - Gábor Kumánovics
- Department of Rheumatology and Immunology, University of Pécs Clinical Center, Pecs, Hungary
| | - László Czirják
- Department of Rheumatology and Immunology, University of Pécs Clinical Center, Pecs, Hungary
| | - Marco Matucci-Cerinic
- Department of Experimental and Clinical Medicine, Division of Rheumatology, Florence, Italy
| | - Tünde Minier
- Department of Rheumatology and Immunology, University of Pécs Clinical Center, Pecs, Hungary.
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35
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Foo MXR, Ong PF, Dreesen O. Premature aging syndromes: From patients to mechanism. J Dermatol Sci 2019; 96:58-65. [PMID: 31727429 DOI: 10.1016/j.jdermsci.2019.10.003] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2019] [Revised: 10/15/2019] [Accepted: 10/18/2019] [Indexed: 12/24/2022]
Abstract
Aging is an inevitable consequence of human life resulting in a gradual deterioration of cell, tissue and organismal function and an increased risk to develop chronic ailments. Premature aging syndromes, also known as progeroid syndromes, recapitulate many clinical features of normal aging and offer a unique opportunity to elucidate fundamental mechanisms that contribute to human aging. Progeroid syndromes can be broadly classified into those caused by perturbations of the nuclear lamina, a meshwork of proteins located underneath the inner nuclear membrane (laminopathies); and a second group that is caused by mutations that directly impair DNA replication and repair. We will focus mainly on laminopathies caused by incorrect processing of lamin A, an intermediate filament protein that resides at the nuclear periphery. Hutchinson-Gilford Progeria (HGPS) is an accelerated aging syndrome caused by a mutation in lamin A and one of the best studied laminopathies. HGPS patients exhibit clinical characteristics of premature aging, including alopecia, aberrant pigmentation, loss of subcutaneous fat and die in their teens as a result of atherosclerosis and cardiovascular complications. Here we summarize how cell- and mouse-based disease models provided mechanistic insights into human aging and discuss experimental strategies under consideration for the treatment of these rare genetic disorders.
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Affiliation(s)
- Mattheus Xing Rong Foo
- Cell Aging Laboratory, Skin Research Institute of Singapore, 8A Biomedical Grove, #06-06 Immunos, 138648 Singapore; Nanyang Technological University, Singapore
| | - Peh Fern Ong
- Cell Aging Laboratory, Skin Research Institute of Singapore, 8A Biomedical Grove, #06-06 Immunos, 138648 Singapore
| | - Oliver Dreesen
- Cell Aging Laboratory, Skin Research Institute of Singapore, 8A Biomedical Grove, #06-06 Immunos, 138648 Singapore; Nanyang Technological University, Singapore.
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36
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Jiang Z, Chen W, Zhou J, Peng Q, Zheng H, Yuan Y, Cui H, Zhao W, Sun X, Zhou Z, Liu X. Identification of COMMD1 as a novel lamin A binding partner. Mol Med Rep 2019; 20:1790-1796. [PMID: 31257505 PMCID: PMC6625409 DOI: 10.3892/mmr.2019.10419] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2018] [Accepted: 05/20/2019] [Indexed: 01/28/2023] Open
Abstract
Lamin A, which is encoded by the LMNA gene, regulates gene expression and genome stability through interactions with a variety of proteins. Mutations in LMNA lead to a diverse set of inherited human diseases, collectively referred to as laminopathies. To gain insight into the protein interactions of lamin A, a yeast two-hybrid screen was conducted using the carboxy-terminus of lamin A. The screen identified copper metabolism MURR1 domain-containing 1 (COMMD1) as a novel lamin A binding partner. Colocalization experiments using fluorescent confocal microscopy revealed that COMMD1 colocalized with lamin A in 293 cells. Furthermore, the COMMD1-lamin A protein interaction was also demonstrated in co-immunoprecipitation experiments. Collectively, the present study demonstrated a physical interaction between COMMD1 and lamin A, which may aid to elucidate the mechanisms of lamin A in the aging process.
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Affiliation(s)
- Zhiwen Jiang
- Institute of Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Weichun Chen
- Institute of Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Jing Zhou
- Institute of Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Qi Peng
- Institute of Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Huiling Zheng
- Institute of Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Yuan Yuan
- Institute of Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Hongjing Cui
- Institute of Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Wei Zhao
- Institute of Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Xuerong Sun
- Institute of Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
| | - Zhongjun Zhou
- Department of Biochemistry, Li Ka Shing Faculty of Medicine, The University of Hong Kong, Hong Kong, SAR, P.R. China
| | - Xinguang Liu
- Institute of Aging Research, Guangdong Provincial Key Laboratory of Medical Molecular Diagnostics, Guangdong Medical University, Dongguan, Guangdong 523808, P.R. China
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37
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The Cutting Edge: The Role of mTOR Signaling in Laminopathies. Int J Mol Sci 2019; 20:ijms20040847. [PMID: 30781376 PMCID: PMC6412338 DOI: 10.3390/ijms20040847] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2019] [Revised: 02/11/2019] [Accepted: 02/12/2019] [Indexed: 12/29/2022] Open
Abstract
The mechanistic target of rapamycin (mTOR) is a ubiquitous serine/threonine kinase that regulates anabolic and catabolic processes, in response to environmental inputs. The existence of mTOR in numerous cell compartments explains its specific ability to sense stress, execute growth signals, and regulate autophagy. mTOR signaling deregulation is closely related to aging and age-related disorders, among which progeroid laminopathies represent genetically characterized clinical entities with well-defined phenotypes. These diseases are caused by LMNA mutations and feature altered bone turnover, metabolic dysregulation, and mild to severe segmental progeria. Different LMNA mutations cause muscular, adipose tissue and nerve pathologies in the absence of major systemic involvement. This review explores recent advances on mTOR involvement in progeroid and tissue-specific laminopathies. Indeed, hyper-activation of protein kinase B (AKT)/mTOR signaling has been demonstrated in muscular laminopathies, and rescue of mTOR-regulated pathways increases lifespan in animal models of Emery-Dreifuss muscular dystrophy. Further, rapamycin, the best known mTOR inhibitor, has been used to elicit autophagy and degradation of mutated lamin A or progerin in progeroid cells. This review focuses on mTOR-dependent pathogenetic events identified in Emery-Dreifuss muscular dystrophy, LMNA-related cardiomyopathies, Hutchinson-Gilford Progeria, mandibuloacral dysplasia, and type 2 familial partial lipodystrophy. Pharmacological application of mTOR inhibitors in view of therapeutic strategies is also discussed.
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38
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Sui T, Liu D, Liu T, Deng J, Chen M, Xu Y, Song Y, Ouyang H, Lai L, Li Z. LMNA-mutated Rabbits: A Model of Premature Aging Syndrome with Muscular Dystrophy and Dilated Cardiomyopathy. Aging Dis 2019; 10:102-115. [PMID: 30705772 PMCID: PMC6345340 DOI: 10.14336/ad.2018.0209] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Accepted: 02/09/2018] [Indexed: 12/13/2022] Open
Abstract
Premature aging syndromes are rare genetic disorders mimicking clinical and molecular features of aging. Products of the LMNA gene, primarily lamin A and C, are major components of the nuclear lamina. A recently identified group of premature aging syndromes was related to mutations of the LMNA gene. Although LMNA disorders have been identified in premature aging syndromes, affect specifically the skeletal muscles, cardiac muscles, and lipodystrophy, understanding the pathogenic mechanisms still need to be elucidated. Here, to establish a rabbit knockout (KO) model of premature aging syndromes, we performed precise LMNA targeting in rabbits via co-injection of Cas9/sgRNA mRNA into zygotes. The LMNA-KO rabbits exhibited reduced locomotion activity with abnormal stiff walking posture and a shortened stature, all of them died within 22 days. In addition, cardiomyopathy, muscular dystrophy, bone and joint abnormalities, as well as lipodystrophy were observed in LMNA-KO rabbits. In conclusion, the novel rabbit LMNA-KO model, displayed typical features of histopathological defects that are observed in premature aging syndromes, and may be utilized as a valuable resource for understanding the pathophysiological mechanisms of premature aging syndromes and elucidating mysteries of the normal process of aging in humans.
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Affiliation(s)
- Tingting Sui
- 1Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Di Liu
- 1Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Tingjun Liu
- 1Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Jichao Deng
- 1Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Mao Chen
- 1Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Yuanyuan Xu
- 1Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Yuning Song
- 1Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Hongsheng Ouyang
- 1Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
| | - Liangxue Lai
- 1Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China.,2Key Laboratory of Regenerative Biology, and Guangdong Provincial Key Laboratory of Stem Cells and Regenerative Medicine, South China Institute for Stem Cell Biology and Regenerative Medicine, Guangzhou Institutes of Biomedicine and Health, Chinese Academy of Sciences, Guangzhou, Guangdong 510530, China
| | - Zhanjun Li
- 1Jilin Provincial Key Laboratory of Animal Embryo Engineering, Jilin University, Changchun 130062, China
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39
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Hutchinson-Gilford Progeria Syndrome-Current Status and Prospects for Gene Therapy Treatment. Cells 2019; 8:cells8020088. [PMID: 30691039 PMCID: PMC6406247 DOI: 10.3390/cells8020088] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Revised: 01/18/2019] [Accepted: 01/19/2019] [Indexed: 12/13/2022] Open
Abstract
Hutchinson-Gilford progeria syndrome (HGPS) is one of the most severe disorders among laminopathies—a heterogeneous group of genetic diseases with a molecular background based on mutations in the LMNA gene and genes coding for interacting proteins. HGPS is characterized by the presence of aging-associated symptoms, including lack of subcutaneous fat, alopecia, swollen veins, growth retardation, age spots, joint contractures, osteoporosis, cardiovascular pathology, and death due to heart attacks and strokes in childhood. LMNA codes for two major, alternatively spliced transcripts, give rise to lamin A and lamin C proteins. Mutations in the LMNA gene alone, depending on the nature and location, may result in the expression of abnormal protein or loss of protein expression and cause at least 11 disease phenotypes, differing in severity and affected tissue. LMNA gene-related HGPS is caused by a single mutation in the LMNA gene in exon 11. The mutation c.1824C > T results in activation of the cryptic donor splice site, which leads to the synthesis of progerin protein lacking 50 amino acids. The accumulation of progerin is the reason for appearance of the phenotype. In this review, we discuss current knowledge on the molecular mechanisms underlying the development of HGPS and provide a critical analysis of current research trends in this field. We also discuss the mouse models available so far, the current status of treatment of the disease, and future prospects for the development of efficient therapies, including gene therapy for HGPS.
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40
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Diociaiuti A, D'Amico P, Pisaneschi E, Giancristoforo S, Pappalardo MG, Di Guardo V, Zambruno G, El Hachem M. Teledermatology diagnosis of the first Italian patient affected with restrictive dermopathy due to ZMPSTE24 homozygous mutation. J Eur Acad Dermatol Venereol 2018; 33:e139-e140. [PMID: 30461078 DOI: 10.1111/jdv.15351] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- A Diociaiuti
- Dermatology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - P D'Amico
- Neonatology and NICU, Cannizzaro Hospital, Catania, Italy
| | - E Pisaneschi
- Medical Genetics Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - S Giancristoforo
- Dermatology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - M G Pappalardo
- Neonatology and NICU, Cannizzaro Hospital, Catania, Italy
| | - V Di Guardo
- Neonatology and NICU, Cannizzaro Hospital, Catania, Italy
| | - G Zambruno
- Istituto Dermopatico dell'Immacolata, IRCCS, Rome, Italy
| | - M El Hachem
- Dermatology Unit, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
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41
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Jiang Y, Ji JY. Understanding lamin proteins and their roles in aging and cardiovascular diseases. Life Sci 2018; 212:20-29. [DOI: 10.1016/j.lfs.2018.09.026] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2018] [Revised: 09/12/2018] [Accepted: 09/14/2018] [Indexed: 02/04/2023]
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Frankel D, Delecourt V, Harhouri K, De Sandre-Giovannoli A, Lévy N, Kaspi E, Roll P. MicroRNAs in hereditary and sporadic premature aging syndromes and other laminopathies. Aging Cell 2018; 17:e12766. [PMID: 29696758 PMCID: PMC6052405 DOI: 10.1111/acel.12766] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/19/2018] [Indexed: 12/11/2022] Open
Abstract
Hereditary and sporadic laminopathies are caused by mutations in genes encoding lamins, their partners, or the metalloprotease ZMPSTE24/FACE1. Depending on the clinical phenotype, they are classified as tissue‐specific or systemic diseases. The latter mostly manifest with several accelerated aging features, as in Hutchinson–Gilford progeria syndrome (HGPS) and other progeroid syndromes. MicroRNAs are small noncoding RNAs described as powerful regulators of gene expression, mainly by degrading target mRNAs or by inhibiting their translation. In recent years, the role of these small RNAs has become an object of study in laminopathies using in vitro or in vivo murine models as well as cells/tissues of patients. To date, few miRNAs have been reported to exert protective effects in laminopathies, including miR‐9, which prevents progerin accumulation in HGPS neurons. The recent literature has described the potential implication of several other miRNAs in the pathophysiology of laminopathies, mostly by exerting deleterious effects. This review provides an overview of the current knowledge of the functional relevance and molecular insights of miRNAs in laminopathies. Furthermore, we discuss how these discoveries could help to better understand these diseases at the molecular level and could pave the way toward identifying new potential therapeutic targets and strategies based on miRNA modulation.
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Affiliation(s)
- Diane Frankel
- Aix Marseille Univ; INSERM; MMG; Marseille France
- APHM, Hôpital la Timone; Service de Biologie Cellulaire; Marseille France
| | | | | | - Annachiara De Sandre-Giovannoli
- Aix Marseille Univ; INSERM; MMG; Marseille France
- APHM, Hôpital la Timone; Département de Génétique Médicale; Marseille France
| | - Nicolas Lévy
- Aix Marseille Univ; INSERM; MMG; Marseille France
- APHM, Hôpital la Timone; Département de Génétique Médicale; Marseille France
| | - Elise Kaspi
- Aix Marseille Univ; INSERM; MMG; Marseille France
- APHM, Hôpital la Timone; Service de Biologie Cellulaire; Marseille France
| | - Patrice Roll
- Aix Marseille Univ; INSERM; MMG; Marseille France
- APHM, Hôpital la Timone; Service de Biologie Cellulaire; Marseille France
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Meinke P, Hintze S, Limmer S, Schoser B. Myotonic Dystrophy-A Progeroid Disease? Front Neurol 2018; 9:601. [PMID: 30140252 PMCID: PMC6095001 DOI: 10.3389/fneur.2018.00601] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2018] [Accepted: 07/06/2018] [Indexed: 12/27/2022] Open
Abstract
Myotonic dystrophies (DM) are slowly progressing multisystemic disorders caused by repeat expansions in the DMPK or CNBP genes. The multisystemic involvement in DM patients often reflects the appearance of accelerated aging. This is partly due to visible features such as cataracts, muscle weakness, and frontal baldness, but there are also less obvious features like cardiac arrhythmia, diabetes or hypogammaglobulinemia. These aging features suggest the hypothesis that DM could be a segmental progeroid disease. To identify the molecular cause of this characteristic appearance of accelerated aging we compare clinical features of DM to “typical” segmental progeroid disorders caused by mutations in DNA repair or nuclear envelope proteins. Furthermore, we characterize if this premature aging effect is also reflected on the cellular level in DM and investigate overlaps with “classical” progeroid disorders. To investigate the molecular similarities at the cellular level we use primary DM and control cell lines. This analysis reveals many similarities to progeroid syndromes linked to the nuclear envelope. Our comparison on both clinical and molecular levels argues for qualification of DM as a segmental progeroid disorder.
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Affiliation(s)
- Peter Meinke
- Friedrich-Baur-Institute at the Department of Neurology, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Stefan Hintze
- Friedrich-Baur-Institute at the Department of Neurology, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Sarah Limmer
- Friedrich-Baur-Institute at the Department of Neurology, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
| | - Benedikt Schoser
- Friedrich-Baur-Institute at the Department of Neurology, University Hospital, Ludwig-Maximilians-University Munich, Munich, Germany
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44
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Burla R, La Torre M, Merigliano C, Vernì F, Saggio I. Genomic instability and DNA replication defects in progeroid syndromes. Nucleus 2018; 9:368-379. [PMID: 29936894 PMCID: PMC7000143 DOI: 10.1080/19491034.2018.1476793] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
Progeroid syndromes induced by mutations in lamin A or in its interactors – named progeroid laminopathies – are model systems for the dissection of the molecular pathways causing physiological and premature aging. A large amount of data, based mainly on the Hutchinson Gilford Progeria syndrome (HGPS), one of the best characterized progeroid laminopathy, has highlighted the role of lamins in multiple DNA activities, including replication, repair, chromatin organization and telomere function. On the other hand, the phenotypes generated by mutations affecting genes directly acting on DNA function, as mutations in the helicases WRN and BLM or in the polymerase polδ, share many of the traits of progeroid laminopathies. These evidences support the hypothesis of a concerted implication of DNA function and lamins in aging. We focus here on these aspects to contribute to the comprehension of the driving forces acting in progeroid syndromes and premature aging.
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Affiliation(s)
- Romina Burla
- a Dipartimento di Biologia e Biotecnologie "C. Darwin" , Sapienza Università di Roma , Roma , Italy.,b Istituto di Biologia e Patologia Molecolari del CNR , Rome , Italy
| | - Mattia La Torre
- a Dipartimento di Biologia e Biotecnologie "C. Darwin" , Sapienza Università di Roma , Roma , Italy.,b Istituto di Biologia e Patologia Molecolari del CNR , Rome , Italy
| | - Chiara Merigliano
- a Dipartimento di Biologia e Biotecnologie "C. Darwin" , Sapienza Università di Roma , Roma , Italy
| | - Fiammetta Vernì
- a Dipartimento di Biologia e Biotecnologie "C. Darwin" , Sapienza Università di Roma , Roma , Italy
| | - Isabella Saggio
- a Dipartimento di Biologia e Biotecnologie "C. Darwin" , Sapienza Università di Roma , Roma , Italy.,b Istituto di Biologia e Patologia Molecolari del CNR , Rome , Italy.,c Istituto Pasteur Fondazione Cenci Bolognetti , Rome , Italy
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Prioritization of Variants Detected by Next Generation Sequencing According to the Mutation Tolerance and Mutational Architecture of the Corresponding Genes. Int J Mol Sci 2018; 19:ijms19061584. [PMID: 29861492 PMCID: PMC6032105 DOI: 10.3390/ijms19061584] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/09/2018] [Accepted: 05/23/2018] [Indexed: 12/27/2022] Open
Abstract
The biggest challenge geneticists face when applying next-generation sequencing technology to the diagnosis of rare diseases is determining which rare variants, from the dozens or hundreds detected, are potentially implicated in the patient’s phenotype. Thus, variant prioritization is an essential step in the process of rare disease diagnosis. In addition to conducting the usual in-silico analyses to predict variant pathogenicity (based on nucleotide/amino-acid conservation and the differences between the physicochemical features of the amino-acid change), three important concepts should be borne in mind. The first is the “mutation tolerance” of the genes in which variants are located. This describes the susceptibility of a given gene to any functional mutation and depends on the strength of purifying selection acting against it. The second is the “mutational architecture” of each gene. This describes the type and location of mutations previously identified in the gene, and their association with different phenotypes or degrees of severity. The third is the mode of inheritance (inherited vs. de novo) of the variants detected. Here, we discuss the importance of each of these concepts for variant prioritization in the diagnosis of rare diseases. Using real data, we show how genes, rather than variants, can be prioritized by calculating a gene-specific mutation tolerance score. We also illustrate the influence of mutational architecture on variant prioritization using five paradigmatic examples. Finally, we discuss the importance of familial variant analysis as final step in variant prioritization.
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Simon DN, Wriston A, Fan Q, Shabanowitz J, Florwick A, Dharmaraj T, Peterson SB, Gruenbaum Y, Carlson CR, Grønning-Wang LM, Hunt DF, Wilson KL. OGT ( O-GlcNAc Transferase) Selectively Modifies Multiple Residues Unique to Lamin A. Cells 2018; 7:E44. [PMID: 29772801 PMCID: PMC5981268 DOI: 10.3390/cells7050044] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 05/11/2018] [Accepted: 05/14/2018] [Indexed: 12/31/2022] Open
Abstract
The LMNA gene encodes lamins A and C with key roles in nuclear structure, signaling, gene regulation, and genome integrity. Mutations in LMNA cause over 12 diseases ('laminopathies'). Lamins A and C are identical for their first 566 residues. However, they form separate filaments in vivo, with apparently distinct roles. We report that lamin A is β-O-linked N-acetylglucosamine-(O-GlcNAc)-modified in human hepatoma (Huh7) cells and in mouse liver. In vitro assays with purified O-GlcNAc transferase (OGT) enzyme showed robust O-GlcNAcylation of recombinant mature lamin A tails (residues 385⁻646), with no detectable modification of lamin B1, lamin C, or 'progerin' (Δ50) tails. Using mass spectrometry, we identified 11 O-GlcNAc sites in a 'sweet spot' unique to lamin A, with up to seven sugars per peptide. Most sites were unpredicted by current algorithms. Double-mutant (S612A/T643A) lamin A tails were still robustly O-GlcNAc-modified at seven sites. By contrast, O-GlcNAcylation was undetectable on tails bearing deletion Δ50, which causes Hutchinson⁻Gilford progeria syndrome, and greatly reduced by deletion Δ35. We conclude that residues deleted in progeria are required for substrate recognition and/or modification by OGT in vitro. Interestingly, deletion Δ35, which does not remove the majority of identified O-GlcNAc sites, does remove potential OGT-association motifs (lamin A residues 622⁻625 and 639⁻645) homologous to that in mouse Tet1. These biochemical results are significant because they identify a novel molecular pathway that may profoundly influence lamin A function. The hypothesis that lamin A is selectively regulated by OGT warrants future testing in vivo, along with two predictions: genetic variants may contribute to disease by perturbing OGT-dependent regulation, and nutrient or other stresses might cause OGT to misregulate wildtype lamin A.
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Affiliation(s)
- Dan N Simon
- Department of Cell Biology, Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA.
| | - Amanda Wriston
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904, USA.
| | - Qiong Fan
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, 0317 Oslo, Norway.
| | - Jeffrey Shabanowitz
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904, USA.
| | - Alyssa Florwick
- Department of Cell Biology, Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA.
| | - Tejas Dharmaraj
- Department of Cell Biology, Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA.
| | - Sherket B Peterson
- Department of Biological Chemistry, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA.
| | - Yosef Gruenbaum
- Department of Genetics, Institute of Life Sciences, Hebrew University of Jerusalem, Givat Ram Jerusalem 91904, Israel.
| | - Cathrine R Carlson
- Institute for Experimental Medical Research, Oslo University Hospital and University of Oslo, 0450 Oslo, Norway.
| | - Line M Grønning-Wang
- Department of Nutrition, Institute of Basic Medical Sciences, University of Oslo, 0317 Oslo, Norway.
| | - Donald F Hunt
- Department of Chemistry, University of Virginia, Charlottesville, VA 22904, USA.
- Department of Pathology, University of Virginia, Charlottesville, VA 22904, USA.
| | - Katherine L Wilson
- Department of Cell Biology, Johns Hopkins University School of Medicine, 725 North Wolfe Street, Baltimore, MD 21205, USA.
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Perovanovic J, Hoffman EP. Mechanisms of allelic and clinical heterogeneity of lamin A/C phenotypes. Physiol Genomics 2018; 50:694-704. [PMID: 29750601 PMCID: PMC6335092 DOI: 10.1152/physiolgenomics.00128.2017] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
Mutations in the lamin A/C (LMNA) gene cause a broad range of clinical syndromes that show tissue-restricted abnormalities of post mitotic tissues, such as muscle, nerve, heart, and adipose tissue. Mutations in other nuclear envelope proteins cause clinically overlapping disorders. The majority of mutations are dominant single amino acid changes (toxic protein produced by the single mutant gene), and patients are heterozygous with both normal and abnormal proteins. Experimental support has been provided for different models of cellular pathogenesis in nuclear envelope diseases, including changes in heterochromatin formation at the nuclear membrane (epigenomics), changes in the timing of steps during terminal differentiation of cells, and structural abnormalities of the nuclear membrane. These models are not mutually exclusive and may be important in different cells at different times of development. Recent experiments using fusion proteins of normal and mutant lamin A/C proteins fused to a bacterial adenine methyltransferase (DamID) provided compelling evidence of mutation-specific perturbation of epigenomic imprinting during terminal differentiation. These gain-of-function properties include lineage-specific ineffective genomic silencing during exit from the cell cycle (heterochromatinization), as well as promiscuous initiation of silencing at incorrect places in the genome. To date, these findings have been limited to a few muscular dystrophy and lipodystrophy LMNA mutations but seem shared with a distinct nuclear envelope disease, emerin-deficient muscular dystrophy. The dominant-negative structural model and gain-of-function epigenomic models for distinct LMNA mutations are not mutually exclusive, and it is likely that both models contribute to aspects of the many complex clinical phenotypes observed.
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Affiliation(s)
- Jelena Perovanovic
- Laboratory of Muscle Stem Cells and Gene Regulation, National Institute of Arthritis, Musculoskeletal, and Skin Diseases, National Institutes of Health , Bethesda, Maryland
| | - Eric P Hoffman
- School of Pharmacy and Pharmaceutical Sciences, Binghamton University, State University of New York , Binghamton New York
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48
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Brady GF, Kwan R, Cunha JB, Elenbaas JS, Omary MB. Lamins and Lamin-Associated Proteins in Gastrointestinal Health and Disease. Gastroenterology 2018; 154:1602-1619.e1. [PMID: 29549040 PMCID: PMC6038707 DOI: 10.1053/j.gastro.2018.03.026] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/26/2018] [Revised: 03/04/2018] [Accepted: 03/06/2018] [Indexed: 02/07/2023]
Abstract
The nuclear lamina is a multi-protein lattice composed of A- and B-type lamins and their associated proteins. This protein lattice associates with heterochromatin and integral inner nuclear membrane proteins, providing links among the genome, nucleoskeleton, and cytoskeleton. In the 1990s, mutations in EMD and LMNA were linked to Emery-Dreifuss muscular dystrophy. Since then, the number of diseases attributed to nuclear lamina defects, including laminopathies and other disorders, has increased to include more than 20 distinct genetic syndromes. Studies of patients and mouse genetic models have pointed to important roles for lamins and their associated proteins in the function of gastrointestinal organs, including liver and pancreas. We review the interactions and functions of the lamina in relation to the nuclear envelope and genome, the ways in which its dysfunction is thought to contribute to human disease, and possible avenues for targeted therapies.
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Affiliation(s)
- Graham F. Brady
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Michigan,Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan,To whom correspondence should be addressed: University of Michigan Medical School, Division of Gastroenterology, Department of Internal Medicine, 1137 Catherine St., Ann Arbor, MI 48109-5622.
| | - Raymond Kwan
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Michigan
| | - Juliana Bragazzi Cunha
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Michigan
| | - Jared S. Elenbaas
- Medical Scientist Training Program, Washington University, St Louis, Missouri
| | - M. Bishr Omary
- Department of Molecular and Integrative Physiology, University of Michigan Medical School, Ann Arbor, Michigan,Department of Internal Medicine, University of Michigan Medical School, Ann Arbor, Michigan,Ǻbo Akademi University, Turku, Finland
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49
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Gargiuli C, Schena E, Mattioli E, Columbaro M, D'Apice MR, Novelli G, Greggi T, Lattanzi G. Lamins and bone disorders: current understanding and perspectives. Oncotarget 2018; 9:22817-22831. [PMID: 29854317 PMCID: PMC5978267 DOI: 10.18632/oncotarget.25071] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2017] [Accepted: 03/22/2018] [Indexed: 12/31/2022] Open
Abstract
Lamin A/C is a major constituent of the nuclear lamina implicated in a number of genetic diseases, collectively known as laminopathies. The most severe forms of laminopathies feature, among other symptoms, congenital scoliosis, osteoporosis, osteolysis or delayed cranial ossification. Importantly, specific bone districts are typically affected in laminopathies. Spine is severely affected in LMNA-linked congenital muscular dystrophy. Mandible, terminal phalanges and clavicles undergo osteolytic processes in progeroid laminopathies and Restrictive Dermopathy, a lethal developmental laminopathy. This specificity suggests that lamin A/C regulates fine mechanisms of bone turnover, as supported by data showing that lamin A/C mutations activate non-canonical pathways of osteoclastogenesis, as the one dependent on TGF beta 2. Here, we review current knowledge on laminopathies affecting bone and LMNA involvement in bone turnover and highlight lamin-dependent mechanisms causing bone disorders. This knowledge can be exploited to identify new therapeutic approaches not only for laminopathies, but also for other rare diseases featuring bone abnormalities.
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Affiliation(s)
- Chiara Gargiuli
- CNR Institute of Molecular Genetics, Unit of Bologna, Bologna, Italy
| | - Elisa Schena
- CNR Institute of Molecular Genetics, Unit of Bologna, Bologna, Italy.,Rizzoli Orthopaedic Institute, Laboratory of Cell Biology, Bologna, Italy
| | - Elisabetta Mattioli
- CNR Institute of Molecular Genetics, Unit of Bologna, Bologna, Italy.,Rizzoli Orthopaedic Institute, Laboratory of Cell Biology, Bologna, Italy
| | - Marta Columbaro
- Rizzoli Orthopaedic Institute, Laboratory of Cell Biology, Bologna, Italy
| | | | - Giuseppe Novelli
- Medical Genetics Unit, Policlinico Tor Vergata University Hospital, Rome, Italy
| | - Tiziana Greggi
- Rizzoli Orthopaedic Institute, Spine Deformity Department, Bologna, Italy
| | - Giovanna Lattanzi
- CNR Institute of Molecular Genetics, Unit of Bologna, Bologna, Italy.,Rizzoli Orthopaedic Institute, Laboratory of Cell Biology, Bologna, Italy
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50
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Del Campo L, Hamczyk MR, Andrés V, Martínez-González J, Rodríguez C. Mechanisms of vascular aging: What can we learn from Hutchinson-Gilford progeria syndrome? CLINICA E INVESTIGACION EN ARTERIOSCLEROSIS 2018; 30:120-132. [PMID: 29602596 DOI: 10.1016/j.arteri.2017.12.007] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/21/2017] [Revised: 12/21/2017] [Accepted: 12/22/2017] [Indexed: 01/07/2023]
Abstract
Aging is the main risk factor for cardiovascular disease (CVD). The increased prevalence of CVD is partly due to the global increase in life expectancy. In this context, it is essential to identify the mechanisms by which aging induces CVD, with the ultimate aim of reducing its incidence. Both atherosclerosis and heart failure significantly contribute to age-associated CVD morbidity and mortality. Hutchinson-Gilford progeria syndrome (HGPS) is a rare genetic disorder caused by the synthesis of progerin, which is noted for accelerated aging and CVD. This mutant form of prelamin A induces generalised atherosclerosis, vascular calcification, and cardiac electrophysiological abnormalities, leading to premature aging and death, mainly due to myocardial infarction and stroke. This review discusses the main vascular structural and functional abnormalities during physiological and premature aging, as well as the mechanisms involved in the exacerbated CVD and accelerated aging induced by the accumulation of progerin and prelamin A. Both proteins are expressed in non-HGPS individuals, and physiological aging shares many features of progeria. Research into HGPS could therefore shed light on novel mechanisms involved in the physiological aging of the cardiovascular system.
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Affiliation(s)
- Lara Del Campo
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, España; CIBER de Enfermedades Cardiovasculares (CIBERCV), España
| | - Magda R Hamczyk
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, España; CIBER de Enfermedades Cardiovasculares (CIBERCV), España
| | - Vicente Andrés
- Centro Nacional de Investigaciones Cardiovasculares Carlos III (CNIC), Madrid, España; CIBER de Enfermedades Cardiovasculares (CIBERCV), España.
| | - José Martínez-González
- CIBER de Enfermedades Cardiovasculares (CIBERCV), España; Instituto de Investigaciones Biomédicas de Barcelona (IIBB-CSIC), IIB-Sant Pau, Barcelona, España
| | - Cristina Rodríguez
- CIBER de Enfermedades Cardiovasculares (CIBERCV), España; Institut de Recerca del Hospital de la Santa Creu i Sant Pau-Programa ICCC, IIB-Sant Pau, Barcelona, España.
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