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Chesneau B, Calvas P, Cassagne M, Varenne F, Rozet JM, Bonneville F, Chassaing N, Fournié P, Fares-Taie L, Plaisancié J. ITPR1: The missing gene in miosis-ataxia syndrome? Am J Med Genet A 2024:e63655. [PMID: 38711238 DOI: 10.1002/ajmg.a.63655] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2024] [Revised: 03/23/2024] [Accepted: 04/26/2024] [Indexed: 05/08/2024]
Abstract
The association of early-onset non-progressive ataxia and miosis is an extremely rare phenotypic entity occasionally reported in the literature. To date, only one family (two siblings and their mother) has benefited from a genetic diagnosis by the identification of a missense heterozygous variant (p.Arg36Cys) in the ITPR1 gene. This gene encodes the inositol 1,4,5-trisphosphate receptor type 1, an intracellular channel that mediates calcium release from the endoplasmic reticulum. Deleterious variants in this gene are known to be associated with two types of spinocerebellar ataxia, SCA15 and SCA29, and with Gillespie syndrome that is associated with ataxia, partial iris hypoplasia, and intellectual disability. In this work, we describe a novel individual carrying a heterozygous missense variant (p.Arg36Pro) at the same position in the N-terminal suppressor domain of ITPR1 as the family previously reported, with the same phenotype associating early-onset non-progressive ataxia and miosis. This second report confirms the implication of ITPR1 in the miosis-ataxia syndrome and therefore broadens the clinical spectrum of the gene. Moreover, the high specificity of the phenotype makes it a recognizable syndrome of genetic origin.
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Affiliation(s)
- Bertrand Chesneau
- Laboratoire de Référence (LBMR) des anomalies malformatives de l'œil, Institut Fédératif de Biologie (IFB), CHU Toulouse, Toulouse, France
- Centre de Référence des Affections Rares en Génétique Ophtalmologique, CARGO, site constitutif, CHU Toulouse, Toulouse, France
- Molecular, Cellular and Developmental Biology Unit (MCD), Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
| | - Patrick Calvas
- Centre de Référence des Affections Rares en Génétique Ophtalmologique, CARGO, site constitutif, CHU Toulouse, Toulouse, France
| | | | - Fanny Varenne
- Centre de Référence des Affections Rares en Génétique Ophtalmologique, CARGO, site constitutif, CHU Toulouse, Toulouse, France
- Service d'Ophtalmologie, Hôpital Purpan, Toulouse, France
| | - Jean-Michel Rozet
- Laboratoire de Génétique Ophtalmologique, INSERM U1163, Institut Imagine, Paris, France
| | - Fabrice Bonneville
- Département de Neuroradiologie, Centre Hospitalier Universitaire de Toulouse, Toulouse, France
| | - Nicolas Chassaing
- Laboratoire de Référence (LBMR) des anomalies malformatives de l'œil, Institut Fédératif de Biologie (IFB), CHU Toulouse, Toulouse, France
- Centre de Référence des Affections Rares en Génétique Ophtalmologique, CARGO, site constitutif, CHU Toulouse, Toulouse, France
| | - Pierre Fournié
- Service d'Ophtalmologie, Hôpital Purpan, Toulouse, France
| | - Lucas Fares-Taie
- Laboratoire de Génétique Ophtalmologique, INSERM U1163, Institut Imagine, Paris, France
| | - Julie Plaisancié
- Laboratoire de Référence (LBMR) des anomalies malformatives de l'œil, Institut Fédératif de Biologie (IFB), CHU Toulouse, Toulouse, France
- Centre de Référence des Affections Rares en Génétique Ophtalmologique, CARGO, site constitutif, CHU Toulouse, Toulouse, France
- Molecular, Cellular and Developmental Biology Unit (MCD), Centre de Biologie Intégrative (CBI), Université de Toulouse, CNRS, UPS, Toulouse, France
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Dodd DO, Mechaussier S, Yeyati PL, McPhie F, Anderson JR, Khoo CJ, Shoemark A, Gupta DK, Attard T, Zariwala MA, Legendre M, Bracht D, Wallmeier J, Gui M, Fassad MR, Parry DA, Tennant PA, Meynert A, Wheway G, Fares-Taie L, Black HA, Mitri-Frangieh R, Faucon C, Kaplan J, Patel M, McKie L, Megaw R, Gatsogiannis C, Mohamed MA, Aitken S, Gautier P, Reinholt FR, Hirst RA, O'Callaghan C, Heimdal K, Bottier M, Escudier E, Crowley S, Descartes M, Jabs EW, Kenia P, Amiel J, Bacci GM, Calogero C, Palazzo V, Tiberi L, Blümlein U, Rogers A, Wambach JA, Wegner DJ, Fulton AB, Kenna M, Rosenfeld M, Holm IA, Quigley A, Hall EA, Murphy LC, Cassidy DM, von Kriegsheim A, Papon JF, Pasquier L, Murris MS, Chalmers JD, Hogg C, Macleod KA, Urquhart DS, Unger S, Aitman TJ, Amselem S, Leigh MW, Knowles MR, Omran H, Mitchison HM, Brown A, Marsh JA, Welburn JPI, Ti SC, Horani A, Rozet JM, Perrault I, Mill P. Ciliopathy patient variants reveal organelle-specific functions for TUBB4B in axonemal microtubules. Science 2024; 384:eadf5489. [PMID: 38662826 DOI: 10.1126/science.adf5489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Accepted: 03/20/2024] [Indexed: 05/03/2024]
Abstract
Tubulin, one of the most abundant cytoskeletal building blocks, has numerous isotypes in metazoans encoded by different conserved genes. Whether these distinct isotypes form cell type- and context-specific microtubule structures is poorly understood. Based on a cohort of 12 patients with primary ciliary dyskinesia as well as mouse mutants, we identified and characterized variants in the TUBB4B isotype that specifically perturbed centriole and cilium biogenesis. Distinct TUBB4B variants differentially affected microtubule dynamics and cilia formation in a dominant-negative manner. Structure-function studies revealed that different TUBB4B variants disrupted distinct tubulin interfaces, thereby enabling stratification of patients into three classes of ciliopathic diseases. These findings show that specific tubulin isotypes have distinct and nonredundant subcellular functions and establish a link between tubulinopathies and ciliopathies.
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Affiliation(s)
- Daniel O Dodd
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Sabrina Mechaussier
- Laboratory of Genetics in Ophthalmology, INSERM UMR_1163, Institute of Genetic Diseases, Institut Imagine, Université de Paris, Paris 75015, France
| | - Patricia L Yeyati
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Fraser McPhie
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Jacob R Anderson
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Chen Jing Khoo
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Amelia Shoemark
- Respiratory Research Group, Molecular and Cellular Medicine, University of Dundee, Dundee DD1 9SY, UK
- Respiratory Paediatrics, Royal Brompton Hospital, London SW3 6NP, UK
| | - Deepesh K Gupta
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63130, USA
| | - Thomas Attard
- Wellcome Trust Centre for Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, UK
| | - Maimoona A Zariwala
- Department of Pathology and Laboratory Medicine, Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7248, USA
| | - Marie Legendre
- Molecular Genetics Laboratory, Sorbonne Université, Assistance Publique - Hôpitaux de Paris (AP-HP), Hôpital Armand Trousseau, Paris 75012, France
- Sorbonne Université, INSERM, Childhood Genetic Disorders, Paris 75012, France
| | - Diana Bracht
- Department of General Pediatrics, University Children's Hospital Münster, Münster 48149, Germany
| | - Julia Wallmeier
- Department of General Pediatrics, University Children's Hospital Münster, Münster 48149, Germany
| | - Miao Gui
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Mahmoud R Fassad
- Genetics and Genomic Medicine Department, UCL Institute of Child Health, University College London, London WC1N 1EH, UK
- Department of Human Genetics, Medical Research Institute, Alexandria University, Alexandria 21561, Egypt
| | - David A Parry
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Peter A Tennant
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Alison Meynert
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Gabrielle Wheway
- Faculty of Medicine, University of Southampton, Southampton SO16 6YD, UK
| | - Lucas Fares-Taie
- Laboratory of Genetics in Ophthalmology, INSERM UMR_1163, Institute of Genetic Diseases, Institut Imagine, Université de Paris, Paris 75015, France
| | - Holly A Black
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
- South East of Scotland Genetics Service, Western General Hospital, Edinburgh EH4 2XU, UK
| | - Rana Mitri-Frangieh
- Department of Anatomy, Cytology and Pathology, Hôpital Intercommuncal de Créteil, Créteil 94000, France
- Biomechanics and Respiratory Apparatus, IMRB, U955 INSERM - Université Paris Est Créteil, CNRS ERL 7000, Créteil 94000, France
| | - Catherine Faucon
- Department of Anatomy, Cytology and Pathology, Hôpital Intercommuncal de Créteil, Créteil 94000, France
| | - Josseline Kaplan
- Laboratory of Genetics in Ophthalmology, INSERM UMR_1163, Institute of Genetic Diseases, Institut Imagine, Université de Paris, Paris 75015, France
| | - Mitali Patel
- Genetics and Genomic Medicine Department, UCL Institute of Child Health, University College London, London WC1N 1EH, UK
- MRC Prion Unit, Institute of Prion Diseases, University College London, London W1W 7FF, UK
| | - Lisa McKie
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Roly Megaw
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
- Princess Alexandra Eye Pavilion, Edinburgh EH3 9HA, UK
| | - Christos Gatsogiannis
- Center for Soft Nanoscience and Institute of Medical Physics and Biophysics, Münster 48149, Germany
| | - Mai A Mohamed
- Genetics and Genomic Medicine Department, UCL Institute of Child Health, University College London, London WC1N 1EH, UK
- Biochemistry Division, Chemistry Department, Faculty of Science, Zagazig University, Ash Sharqiyah 44519, Egypt
| | - Stuart Aitken
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Philippe Gautier
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Finn R Reinholt
- Core Facility for Electron Microscopy, Department of Pathology, Oslo University Hospital-Rikshospitalet, Oslo 0372, Norway
| | - Robert A Hirst
- Centre for PCD Diagnosis and Research, Department of Respiratory Sciences, University of Leicester, Leicester LE1 9HN, UK
| | - Chris O'Callaghan
- Centre for PCD Diagnosis and Research, Department of Respiratory Sciences, University of Leicester, Leicester LE1 9HN, UK
| | - Ketil Heimdal
- Department of Medical Genetics, Oslo University Hospital, Oslo 0407, Norway
| | - Mathieu Bottier
- Respiratory Research Group, Molecular and Cellular Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Estelle Escudier
- Sorbonne Université, INSERM, Childhood Genetic Disorders, Paris 75012, France
- Department of Anatomy, Cytology and Pathology, Hôpital Intercommuncal de Créteil, Créteil 94000, France
| | - Suzanne Crowley
- Paediatric Department of Allergy and Lung Diseases, Oslo University Hospital, Oslo 0407, Norway
| | - Maria Descartes
- Department of Genetics, University of Alabama at Birmingham, Birmingham, AL 35294-0024, USA
| | - Ethylin W Jabs
- Department of Genetics and Genomic Sciences, Icahn School of Medicine at Mount Sinai, New York 10029-6504, New York, USA
- Department of Clinical Genomics, Mayo Clinic, Rochester, NY 55905, USA
| | - Priti Kenia
- Department of Paediatric Respiratory Medicine, Birmingham Women's and Children's Hospital NHS Foundation Trust, Birmingham B15 2TG, UK
| | - Jeanne Amiel
- Département de Génétique, Hôpital Necker-Enfants Malades, Assistance Publique Hôpitaux de Paris (AP-HP), Paris 75015, France
- Laboratory of Embryology and Genetics of Human Malformations, INSERM UMR 1163, Institut Imagine, Université de Paris, Paris 75015, France
| | - Giacomo Maria Bacci
- Pediatric Ophthalmology Unit, Meyer Children's Hospital IRCCS, Florence 50139, Italy
| | - Claudia Calogero
- Pediatric Pulmonary Unit, Meyer Children's Hospital IRCCS, Florence 50139, Italy
| | - Viviana Palazzo
- Medical Genetics Unit, Meyer Children's Hospital IRCCS, Florence 50139, Italy
| | - Lucia Tiberi
- Medical Genetics Unit, Meyer Children's Hospital IRCCS, Florence 50139, Italy
| | | | - Andrew Rogers
- Respiratory Paediatrics, Royal Brompton Hospital, London SW3 6NP, UK
| | - Jennifer A Wambach
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63130, USA
| | - Daniel J Wegner
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63130, USA
| | - Anne B Fulton
- Department of Ophthalmology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Margaret Kenna
- Department of Otolaryngology, Boston Children's Hospital, Boston, MA 02115, USA
| | - Margaret Rosenfeld
- Department of Pediatrics, University of Washington School of Medicine and Seattle Children's Research Institute, Seattle, WA 98015, USA
| | - Ingrid A Holm
- Division of Genetics and Genomics and the Manton Center for Orphan Diseases Research, Boston Children's Hospital, Boston, MA 02115, USA
- Department of Pediatrics, Harvard Medical School, Boston, MA 02115 USA
| | - Alan Quigley
- Department of Paediatric Radiology, Royal Hospital for Children and Young People, Edinburgh EH16 4TJ, UK
| | - Emma A Hall
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Laura C Murphy
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Diane M Cassidy
- Respiratory Research Group, Molecular and Cellular Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Alex von Kriegsheim
- Cancer Research UK Edinburgh Centre, Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Jean-François Papon
- ENT Department, Bicêtre Hospital, Assistance Publique-Hôpitaux de Paris (AP-HP), Paris-Saclay University, Le Kremlin-Bicêtre 94270, France
| | - Laurent Pasquier
- Medical Genetics Department, CHU Pontchaillou, Rennes 35033, France
| | - Marlène S Murris
- Department of Pulmonology, Transplantation, and Cystic Fibrosis Centre, Larrey Hospital, Toulouse 31400, France
| | - James D Chalmers
- Respiratory Research Group, Molecular and Cellular Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Claire Hogg
- Respiratory Paediatrics, Royal Brompton Hospital, London SW3 6NP, UK
| | - Kenneth A Macleod
- Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Children and Young People, Edinburgh EH16 4TJ, UK
| | - Don S Urquhart
- Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Children and Young People, Edinburgh EH16 4TJ, UK
- Department of Child Life and Health, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Stefan Unger
- Department of Paediatric Respiratory and Sleep Medicine, Royal Hospital for Children and Young People, Edinburgh EH16 4TJ, UK
- Department of Child Life and Health, University of Edinburgh, Edinburgh EH16 4TJ, UK
| | - Timothy J Aitman
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Serge Amselem
- Molecular Genetics Laboratory, Sorbonne Université, Assistance Publique - Hôpitaux de Paris (AP-HP), Hôpital Armand Trousseau, Paris 75012, France
- Sorbonne Université, INSERM, Childhood Genetic Disorders, Paris 75012, France
| | - Margaret W Leigh
- Department of Pediatrics, Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7248, USA
| | - Michael R Knowles
- Department of Medicine, Marsico Lung Institute, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599-7248, USA
| | - Heymut Omran
- Department of General Pediatrics, University Children's Hospital Münster, Münster 48149, Germany
| | - Hannah M Mitchison
- Genetics and Genomic Medicine Department, UCL Institute of Child Health, University College London, London WC1N 1EH, UK
| | - Alan Brown
- Department of Biological Chemistry and Molecular Pharmacology, Blavatnik Institute, Harvard Medical School, Boston, MA 02215, USA
| | - Joseph A Marsh
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
| | - Julie P I Welburn
- Wellcome Trust Centre for Cell Biology, School of Biological Sciences, University of Edinburgh, Edinburgh EH9 3BF, UK
| | - Shih-Chieh Ti
- School of Biomedical Sciences, The University of Hong Kong, Hong Kong SAR, China
| | - Amjad Horani
- Department of Pediatrics, Washington University School of Medicine, St. Louis, MO 63130, USA
- Department of Cell Biology and Physiology, Washington University School of Medicine, St. Louis, MO 63110, USA
| | - Jean-Michel Rozet
- Laboratory of Genetics in Ophthalmology, INSERM UMR_1163, Institute of Genetic Diseases, Institut Imagine, Université de Paris, Paris 75015, France
| | - Isabelle Perrault
- Laboratory of Genetics in Ophthalmology, INSERM UMR_1163, Institute of Genetic Diseases, Institut Imagine, Université de Paris, Paris 75015, France
| | - Pleasantine Mill
- MRC Human Genetics Unit, MRC Institute of Genetics and Cancer, University of Edinburgh, Edinburgh EH4 2XU, UK
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Plaisancié J, Chesneau B, Fares-Taie L, Rozet JM, Pechmeja J, Noero J, Gaston V, Bailleul-Forestier I, Calvas P, Chassaing N. Structural Variant Disrupting the Expression of the Remote FOXC1 Gene in a Patient with Syndromic Complex Microphthalmia. Int J Mol Sci 2024; 25:2669. [PMID: 38473917 DOI: 10.3390/ijms25052669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 02/21/2024] [Accepted: 02/23/2024] [Indexed: 03/14/2024] Open
Abstract
Ocular malformations (OMs) arise from early defects during embryonic eye development. Despite the identification of over 100 genes linked to this heterogeneous group of disorders, the genetic cause remains unknown for half of the individuals following Whole-Exome Sequencing. Diagnosis procedures are further hampered by the difficulty of studying samples from clinically relevant tissue, which is one of the main obstacles in OMs. Whole-Genome Sequencing (WGS) to screen for non-coding regions and structural variants may unveil new diagnoses for OM individuals. In this study, we report a patient exhibiting a syndromic OM with a de novo 3.15 Mb inversion in the 6p25 region identified by WGS. This balanced structural variant was located 100 kb away from the FOXC1 gene, previously associated with ocular defects in the literature. We hypothesized that the inversion disrupts the topologically associating domain of FOXC1 and impairs the expression of the gene. Using a new type of samples to study transcripts, we were able to show that the patient presented monoallelic expression of FOXC1 in conjunctival cells, consistent with the abolition of the expression of the inverted allele. This report underscores the importance of investigating structural variants, even in non-coding regions, in individuals affected by ocular malformations.
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Affiliation(s)
- Julie Plaisancié
- Laboratoire de Référence des Anomalies Malformatives de l'Œil, Institut Fédératif de Biologie, Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
- Centre de Référence des Affections Rares en Génétique Ophtalmologique (CARGO), Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
- Molecular, Cellular and Developmental Biology Unit (MCD), Centre de Biologie Intégrative (CBI), (CNRS), Université Toulouse III Paul Sabatier (UPS), Université de Toulouse, 31062 Toulouse, France
| | - Bertrand Chesneau
- Laboratoire de Référence des Anomalies Malformatives de l'Œil, Institut Fédératif de Biologie, Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
- Centre de Référence des Affections Rares en Génétique Ophtalmologique (CARGO), Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
- Molecular, Cellular and Developmental Biology Unit (MCD), Centre de Biologie Intégrative (CBI), (CNRS), Université Toulouse III Paul Sabatier (UPS), Université de Toulouse, 31062 Toulouse, France
| | - Lucas Fares-Taie
- Laboratoire de Génétique Ophtalmologique, Institut national de la Santé et de la Recherche Médicale (INSERM) U1163, Institut Imagine, 75015 Paris, France
| | - Jean-Michel Rozet
- Laboratoire de Génétique Ophtalmologique, Institut national de la Santé et de la Recherche Médicale (INSERM) U1163, Institut Imagine, 75015 Paris, France
| | - Jacmine Pechmeja
- Centre de Référence des Affections Rares en Génétique Ophtalmologique (CARGO), Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
- Service d'Ophtalmologie, Hôpital Purpan, Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
| | - Julien Noero
- Laboratoire de Référence des Anomalies Malformatives de l'Œil, Institut Fédératif de Biologie, Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
- Molecular, Cellular and Developmental Biology Unit (MCD), Centre de Biologie Intégrative (CBI), (CNRS), Université Toulouse III Paul Sabatier (UPS), Université de Toulouse, 31062 Toulouse, France
| | - Véronique Gaston
- Laboratoire de Référence des Anomalies Malformatives de l'Œil, Institut Fédératif de Biologie, Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
| | | | - Patrick Calvas
- Laboratoire de Référence des Anomalies Malformatives de l'Œil, Institut Fédératif de Biologie, Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
- Centre de Référence des Affections Rares en Génétique Ophtalmologique (CARGO), Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
| | - Nicolas Chassaing
- Laboratoire de Référence des Anomalies Malformatives de l'Œil, Institut Fédératif de Biologie, Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
- Centre de Référence des Affections Rares en Génétique Ophtalmologique (CARGO), Centre Hospitalier Universitaire de Toulouse, 31300 Toulouse, France
- Laboratoire AURAGEN, 69003 Lyon, France
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Rakotomamonjy J, Rylaarsdam L, Fares-Taie L, McDermott S, Davies D, Yang G, Fagbemi F, Epstein M, Fairbanks-Santana M, Rozet JM, Guemez-Gamboa A. PCDH12 loss results in premature neuronal differentiation and impeded migration in a cortical organoid model. Cell Rep 2023; 42:112845. [PMID: 37480564 PMCID: PMC10521973 DOI: 10.1016/j.celrep.2023.112845] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2022] [Revised: 05/15/2023] [Accepted: 07/06/2023] [Indexed: 07/24/2023] Open
Abstract
Protocadherins (PCDHs) are cell adhesion molecules that regulate many essential neurodevelopmental processes related to neuronal maturation, dendritic arbor formation, axon pathfinding, and synaptic plasticity. Biallelic loss-of-function variants in PCDH12 are associated with several neurodevelopmental disorders (NDDs). Despite the highly deleterious outcome resulting from loss of PCDH12, little is known about its role during brain development and disease. Here, we show that PCDH12 loss severely impairs cerebral organoid development, with reduced proliferative areas and disrupted laminar organization. 2D models further show that neural progenitor cells lacking PCDH12 prematurely exit the cell cycle and differentiate earlier when compared with wild type. Furthermore, we show that PCDH12 regulates neuronal migration and suggest that this could be through a mechanism requiring ADAM10-mediated ectodomain shedding and/or membrane recruitment of cytoskeleton regulators. Our results demonstrate a critical involvement of PCDH12 in cortical organoid development, suggesting a potential cause for the pathogenic mechanisms underlying PCDH12-related NDDs.
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Affiliation(s)
- Jennifer Rakotomamonjy
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Lauren Rylaarsdam
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Lucas Fares-Taie
- Laboratory of Genetics in Ophthalmology (LGO), INSERM UMR1163, Institute of Genetic Diseases, Imagine and Paris Descartes University, 75015 Paris, France
| | - Sean McDermott
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Devin Davies
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - George Yang
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Fikayo Fagbemi
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Maya Epstein
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Martín Fairbanks-Santana
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA
| | - Jean-Michel Rozet
- Laboratory of Genetics in Ophthalmology (LGO), INSERM UMR1163, Institute of Genetic Diseases, Imagine and Paris Descartes University, 75015 Paris, France
| | - Alicia Guemez-Gamboa
- Department of Neuroscience, Feinberg School of Medicine, Northwestern University, Chicago, IL 60611, USA.
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Rakotomamonjy J, Rylaarsdam L, Fares-Taie L, McDermott S, Davies D, Yang G, Fagbemi F, Epstein M, Guemez-Gamboa A. Impaired migration and premature differentiation underlie the neurological phenotype associated with PCDH12 loss of function. bioRxiv 2023:2023.01.05.522934. [PMID: 36711630 PMCID: PMC9881913 DOI: 10.1101/2023.01.05.522934] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Protocadherins (PCDHs) are cell adhesion molecules that regulate many essential neurodevelopmental processes related to neuronal maturation, dendritic arbor formation, axon pathfinding, and synaptic plasticity. Bi-allelic loss-of-function variants in PCDH12 are associated with several neurodevelopmental disorders (NDDs) such as diencephalic-mesencephalic dysplasia syndrome, cerebral palsy, cerebellar ataxia, and microcephaly. Despite the highly deleterious outcome resulting from loss of PCDH12, little is known about its role during brain development and disease. Here, we show that PCDH12 loss severely impairs cerebral organoid development with reduced proliferative areas and disrupted laminar organization. 2D models further show that neural progenitor cells lacking PCDH12 prematurely exit cell cycle and differentiate earlier when compared to wildtype. Furthermore, we show that PCDH12 regulates neuronal migration through a mechanism requiring ADAM10-mediated ectodomain shedding and membrane recruitment of cytoskeleton regulators. Our data demonstrate a critical and broad involvement of PCDH12 in cortical development, revealing the pathogenic mechanisms underlying PCDH12-related NDDs.
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6
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Chesneau B, Aubert-Mucca M, Fremont F, Pechmeja J, Soler V, Isidor B, Nizon M, Dollfus H, Kaplan J, Fares-Taie L, Rozet JM, Busa T, Lacombe D, Naudion S, Amiel J, Rio M, Attie-Bitach T, Lesage C, Thouvenin D, Odent S, Morel G, Vincent-Delorme C, Boute O, Vanlerberghe C, Dieux A, Boussion S, Faivre L, Pinson L, Laffargue F, Le Guyader G, Le Meur G, Prieur F, Lambert V, Laudier B, Cottereau E, Ayuso C, Corton-Pérez M, Bouneau L, Le Caignec C, Gaston V, Jeanton-Scaramouche C, Dupin-Deguine D, Calvas P, Chassaing N, Plaisancié J. First evidence of SOX2 mutations in Peters' anomaly: lessons from molecular screening of 95 patients. Clin Genet 2022; 101:494-506. [PMID: 35170016 DOI: 10.1111/cge.14123] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2021] [Revised: 02/10/2022] [Accepted: 02/12/2022] [Indexed: 11/30/2022]
Abstract
Peters' anomaly (PA) is a rare anterior segment dysgenesis characterized by central corneal opacity and irido-lenticulo-corneal adhesions. Several genes are involved in syndromic or isolated PA (B3GLCT, PAX6, PITX3, FOXE3, CYP1B1). Some Copy Number Variations (CNVs) have also been occasionally reported. Despite this genetic heterogeneity, most of patients remain without genetic diagnosis. We retrieved a cohort of 95 individuals with PA and performed genotyping using a combination of Comparative genomic hybridization, whole genome, exome and targeted sequencing of 119 genes associated with ocular development anomalies. Causative genetic defects involving 12 genes and CNVs were identified for 1/3 of patients. Unsurprisingly, B3GLCT and PAX6 were the most frequently implicated genes, respectively in syndromic and isolated PA. Unexpectedly, the third gene involved in our cohort was SOX2, the major gene of micro-anophthalmia. Four unrelated patients with PA (isolated or with microphthalmia) were carrying pathogenic variants in this gene that was never associated with PA before. Here we described the largest cohort of PA patients ever reported. The genetic bases of PA are still to be explored as genetic diagnosis was unavailable for 2/3 of patients. Nevertheless, we showed here for the first time the involvement of SOX2 in PA, offering new evidence for its role in corneal transparency and anterior segment development. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Bertrand Chesneau
- Génétique Médicale, Hôpital Purpan, CHU, Toulouse, France.,Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), CHU, Toulouse, France
| | | | - Félix Fremont
- Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), CHU, Toulouse, France.,Service d'ophtalmologie, Hôpital Purpan, CHU Toulouse, France
| | - Jacmine Pechmeja
- Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), CHU, Toulouse, France.,Service d'ophtalmologie, Hôpital Purpan, CHU Toulouse, France
| | - Vincent Soler
- Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), CHU, Toulouse, France.,Service d'ophtalmologie, Hôpital Purpan, CHU Toulouse, France
| | - Bertrand Isidor
- Génétique Médicale, Institut du thorax, INSERM, CNRS, UNIV Nantes, Nantes, France
| | - Mathilde Nizon
- Génétique Médicale, Institut du thorax, INSERM, CNRS, UNIV Nantes, Nantes, France
| | - Hélène Dollfus
- Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), Hôpitaux Universitaires, Strasbourg, France
| | - Josseline Kaplan
- Laboratoire de Génétique Ophtalmologique, INSERM U1163, Institut Imagine, Paris, France
| | - Lucas Fares-Taie
- Laboratoire de Génétique Ophtalmologique, INSERM U1163, Institut Imagine, Paris, France
| | - Jean-Michel Rozet
- Laboratoire de Génétique Ophtalmologique, INSERM U1163, Institut Imagine, Paris, France
| | - Tiffany Busa
- Génétique Clinique, AP- HM CHU Timone Enfants, Marseille, France
| | - Didier Lacombe
- Département de Génétique Médicale, CHU Bordeaux, Bordeaux, France
| | - Sophie Naudion
- Département de Génétique Médicale, CHU Bordeaux, Bordeaux, France
| | - Jeanne Amiel
- Service de Génétique Médicale, Hôpital Necker-Enfants Malades, AP-HP, Paris, France
| | - Marlène Rio
- Service de Génétique Médicale, Hôpital Necker-Enfants Malades, AP-HP, Paris, France
| | - Tania Attie-Bitach
- Service d'Histologie-Embryologie-Cytogénétique, Hôpital Necker-Enfants Malades, AP-, HP, Paris, France
| | | | | | - Sylvie Odent
- Service de Génétique Clinique, Centre Labellisé pour les Anomalies du Développement Ouest, CHU Rennes; Institut de Génétique et Développement de Rennes, CNRS, UMR 6290, Université de Rennes, ERN ITHACA, France
| | - Godelieve Morel
- Service de Génétique Clinique, Centre Labellisé pour les Anomalies du Développement Ouest, CHU Rennes; Institut de Génétique et Développement de Rennes, CNRS, UMR 6290, Université de Rennes, ERN ITHACA, France
| | | | | | | | | | | | - Laurence Faivre
- Centre de Référence Anomalies du Développement et Syndromes Malformatifs, FHU TRANSLAD, CHU, Dijon, France
| | - Lucile Pinson
- Département de Génétique Médicale, Maladies Rares et Médecine Personnalisée, CHU de Montpellier, France
| | | | | | | | | | - Victor Lambert
- Service d'ophtalmologie, Hôpital Nord, Saint-Etienne, France
| | | | | | - Carmen Ayuso
- Genetics & Genomics Department, Jiménez Díaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD-UAM). Centre for Biomedical Network Research on Rare Diseases (CIBERER), Madrid, Spain
| | - Marta Corton-Pérez
- Genetics & Genomics Department, Jiménez Díaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD-UAM). Centre for Biomedical Network Research on Rare Diseases (CIBERER), Madrid, Spain
| | | | | | | | | | | | - Patrick Calvas
- Génétique Médicale, Hôpital Purpan, CHU, Toulouse, France.,Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), CHU, Toulouse, France
| | - Nicolas Chassaing
- Génétique Médicale, Hôpital Purpan, CHU, Toulouse, France.,Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), CHU, Toulouse, France
| | - Julie Plaisancié
- Génétique Médicale, Hôpital Purpan, CHU, Toulouse, France.,Centre de Référence pour les Affections Rares en Génétique Ophtalmologique (CARGO), CHU, Toulouse, France.,INSERM U1214, ToNIC, Université Toulouse III, France
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7
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Kalantari S, Carlston C, Alsaleh N, Abdel-Salam GMH, Alkuraya F, Kato M, Matsumoto N, Miyatake S, Yamamoto T, Fares-Taie L, Rozet JM, Chassaing N, Vincent-Delorme C, Kang-Bellin A, McWalter K, Bupp C, Palen E, Wagner MD, Niceta M, Cesario C, Milone R, Kaplan J, Wadman E, Dobyns WB, Filges I. Expanding the KIF4A-associated phenotype. Am J Med Genet A 2021; 185:3728-3739. [PMID: 34346154 PMCID: PMC9291479 DOI: 10.1002/ajmg.a.62443] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2021] [Revised: 07/12/2021] [Accepted: 07/14/2021] [Indexed: 01/30/2023]
Abstract
Kinesin super family (KIF) genes encode motor kinesins, a family of evolutionary conserved proteins, involved in intracellular trafficking of various cargoes. These proteins are critical for various physiological processes including neuron function and survival, ciliary function and ciliogenesis, and cell‐cycle progression. Recent evidence suggests that alterations in motor kinesin genes can lead to a variety of human diseases, including monogenic disorders. Neuropathies, impaired higher brain functions, structural brain abnormalities and multiple congenital anomalies (i.e., renal, urogenital, and limb anomalies) can result from pathogenic variants in many KIF genes. We expand the phenotype associated with KIF4A variants from developmental delay and intellectual disability with or without epilepsy to a congenital anomaly phenotype with hydrocephalus and various brain anomalies at the more severe end of phenotypic manifestations. Additional anomalies of the kidneys and urinary tract, congenital lymphedema, eye, and dental anomalies seem to be variably associated and overlap with clinical signs observed in other kinesinopathies. Caution still applies to missense variants, but hopefully, future work will further establish genotype–phenotype correlations in a larger number of patients and functional studies may give further insights into the complex function of KIF4A.
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Affiliation(s)
- Silvia Kalantari
- Medical Genetics, Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland.,Department of Clinical Research, University Hospital Basel, Basel, Switzerland
| | - Colleen Carlston
- Division of Medical Genetics, Department of Pediatrics, Boston Children's Hospital, Boston, Massachusetts, USA
| | - Norah Alsaleh
- Division of Medical Genetics and Metabolic Medicine, Department of Pediatrics, Prince Sultan Military Medical City, Riyadh, Saudi Arabia
| | - Ghada M H Abdel-Salam
- Department of Clinical Genetics, Human Genetics and Genome Research Division, National Research Centre, Cairo, Egypt
| | - Fowzan Alkuraya
- Department of Translational Genomics, Center for Genomic Medicine, King Faisal Specialist Hospital and Research Center, Riyadh, Saudi Arabia
| | - Mitsuhiro Kato
- Department of Pediatrics, Showa University School of Medicine, Shinagawa-ku, Japan
| | - Naomichi Matsumoto
- Department of Human Genetics, Yokohama City University, Graduate School of Medicine, Yokohama, Japan
| | - Satoko Miyatake
- Department of Human Genetics, Yokohama City University, Graduate School of Medicine, Yokohama, Japan
| | - Tatsuya Yamamoto
- Department of Pediatrics, Hirosaki University School of Medicine, Hirosaki, Japan
| | - Lucas Fares-Taie
- INSERM UMR1163, Imagine - Institute of Genetic Diseases, Paris Descartes University, Paris, France
| | - Jean-Michel Rozet
- INSERM UMR1163, Imagine - Institute of Genetic Diseases, Paris Descartes University, Paris, France
| | - Nicolas Chassaing
- Department of Medical Genetics, CHU Toulouse, Purpan Hospital, Toulouse, France
| | | | | | | | - Caleb Bupp
- Spectrum Health, Grand Rapids, Michigan, USA
| | - Emily Palen
- Autism & Developmental Medicine Institute, Danville, Pennsylvania, USA
| | - Monisa D Wagner
- Autism & Developmental Medicine Institute, Danville, Pennsylvania, USA
| | - Marcello Niceta
- Genetics and Rare Diseases Research Division, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Claudia Cesario
- Laboratory of Medical Genetics, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Roberta Milone
- Department of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Calambrone, Pisa, Italy
| | - Julie Kaplan
- Division of Genetics, Department of Pediatrics, Nemours/Alfred I. DuPont Hospital for Children, Wilmington, Delaware, USA
| | - Erin Wadman
- Division of Genetics, Department of Pediatrics, Nemours/Alfred I. DuPont Hospital for Children, Wilmington, Delaware, USA
| | - William B Dobyns
- Division of Genetics, Department of Pediatrics, University of Minnesota, Minneapolis, Minnesota, USA
| | - Isabel Filges
- Medical Genetics, Institute of Medical Genetics and Pathology, University Hospital Basel, Basel, Switzerland.,Department of Clinical Research, University Hospital Basel, Basel, Switzerland.,University of Basel, Basel, Switzerland
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8
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Plaisancié J, Tarilonte M, Ramos P, Jeanton-Scaramouche C, Gaston V, Dollfus H, Aguilera D, Kaplan J, Fares-Taie L, Blanco-Kelly F, Villaverde C, Francannet C, Goldenberg A, Arroyo I, Rozet JM, Ayuso C, Chassaing N, Calvas P, Corton M. Implication of non-coding PAX6 mutations in aniridia. Hum Genet 2018; 137:831-846. [PMID: 30291432 DOI: 10.1007/s00439-018-1940-x] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2018] [Accepted: 09/23/2018] [Indexed: 01/14/2023]
Abstract
There is an increasing implication of non-coding regions in pathological processes of genetic origin. This is partly due to the emergence of sophisticated techniques that have transformed research into gene expression by allowing a more global understanding of the genome, both at the genomic, epigenomic and chromatin levels. Here, we implemented the analysis of PAX6, whose coding loss-of-function variants are mainly implied in aniridia, by studying its non-coding regions (untranslated regions, introns and cis-regulatory sequences). In particular, we have taken advantage of the development of high-throughput approaches to screen the upstream and downstream regulatory regions of PAX6 in 47 aniridia patients without identified mutation in the coding sequence. This was made possible through the use of custom targeted resequencing and/or CGH array to analyze the entire PAX6 locus on 11p13. We found candidate variants in 30 of the 47 patients. 9/30 correspond to the well-known described 3' deletions encompassing SIMO and other enhancer elements. In addition, we identified numerous different variants in various non-coding regions, in particular untranslated regions. Among these latter, most of them demonstrated an in vitro functional effect using a minigene strategy, and 12/21 are thus considered as causative mutations or very likely to explain the phenotypes. This new analysis strategy brings molecular diagnosis to more than 90% of our aniridia patients. This study revealed an outstanding mutation pattern in non-coding PAX6 regions confirming that PAX6 remains the major gene for aniridia.
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Affiliation(s)
- Julie Plaisancié
- Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan, CHU Toulouse, Place du Dr Baylac, 31059, Toulouse Cedex 9, France.
- INSERM U1056, Université Toulouse III, Toulouse, France.
| | - M Tarilonte
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - P Ramos
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - C Jeanton-Scaramouche
- Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan, CHU Toulouse, Place du Dr Baylac, 31059, Toulouse Cedex 9, France
| | - V Gaston
- Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan, CHU Toulouse, Place du Dr Baylac, 31059, Toulouse Cedex 9, France
| | - H Dollfus
- Centre de Référence pour les affections rares en génétique ophtalmologique, CARGO, Filière SENSGENE, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - D Aguilera
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - J Kaplan
- Laboratoire de Génétique Ophtalmologique INSERM U1163, Institut Imagine, Paris, France
| | - L Fares-Taie
- Laboratoire de Génétique Ophtalmologique INSERM U1163, Institut Imagine, Paris, France
| | - F Blanco-Kelly
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - C Villaverde
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - C Francannet
- Service de Génétique Médicale, CHU Estaing, Clermont-Ferrand, France
| | - A Goldenberg
- Service de Génétique, CHU de Rouen, Centre Normand de Génomique Médicale et Médecine Personnalisée, Rouen, France
| | - I Arroyo
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
- Department of Genetics, Hospital of Cáceres, Cáceres, Spain
| | - J M Rozet
- Laboratoire de Génétique Ophtalmologique INSERM U1163, Institut Imagine, Paris, France
| | - C Ayuso
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
| | - N Chassaing
- Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan, CHU Toulouse, Place du Dr Baylac, 31059, Toulouse Cedex 9, France
- INSERM U1056, Université Toulouse III, Toulouse, France
| | - P Calvas
- Service de Génétique Médicale, Pavillon Lefebvre, Hôpital Purpan, CHU Toulouse, Place du Dr Baylac, 31059, Toulouse Cedex 9, France
- INSERM U1056, Université Toulouse III, Toulouse, France
| | - M Corton
- Department of Genetics, Instituto de Investigacion Sanitaria-Fundacion Jimenez Diaz University Hospital-Universidad Autónoma de Madrid (IIS-FJD, UAM), Madrid, Spain
- Center for Biomedical Network Research on Rare Diseases (CIBERER), ISCIII, Madrid, Spain
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9
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Angebault C, Guichet PO, Talmat-Amar Y, Charif M, Gerber S, Fares-Taie L, Gueguen N, Halloy F, Moore D, Amati-Bonneau P, Manes G, Hebrard M, Bocquet B, Quiles M, Piro-Mégy C, Teigell M, Delettre C, Rossel M, Meunier I, Preising M, Lorenz B, Carelli V, Chinnery PF, Yu-Wai-Man P, Kaplan J, Roubertie A, Barakat A, Bonneau D, Reynier P, Rozet JM, Bomont P, Hamel CP, Lenaers G. Recessive Mutations in RTN4IP1 Cause Isolated and Syndromic Optic Neuropathies. Am J Hum Genet 2015; 97:754-60. [PMID: 26593267 DOI: 10.1016/j.ajhg.2015.09.012] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2015] [Accepted: 09/25/2015] [Indexed: 12/28/2022] Open
Abstract
Autosomal-recessive optic neuropathies are rare blinding conditions related to retinal ganglion cell (RGC) and optic-nerve degeneration, for which only mutations in TMEM126A and ACO2 are known. In four families with early-onset recessive optic neuropathy, we identified mutations in RTN4IP1, which encodes a mitochondrial ubiquinol oxydo-reductase. RTN4IP1 is a partner of RTN4 (also known as NOGO), and its ortholog Rad8 in C. elegans is involved in UV light response. Analysis of fibroblasts from affected individuals with a RTN4IP1 mutation showed loss of the altered protein, a deficit of mitochondrial respiratory complex I and IV activities, and increased susceptibility to UV light. Silencing of RTN4IP1 altered the number and morphogenesis of mouse RGC dendrites in vitro and the eye size, neuro-retinal development, and swimming behavior in zebrafish in vivo. Altogether, these data point to a pathophysiological mechanism responsible for RGC early degeneration and optic neuropathy and linking RTN4IP1 functions to mitochondrial physiology, response to UV light, and dendrite growth during eye maturation.
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Affiliation(s)
- Claire Angebault
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Pierre-Olivier Guichet
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Yasmina Talmat-Amar
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Majida Charif
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France; INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France
| | - Sylvie Gerber
- INSERM U1163, Hôpital Necker Enfants-Malades, 75015 Paris, France
| | - Lucas Fares-Taie
- INSERM U1163, Hôpital Necker Enfants-Malades, 75015 Paris, France
| | - Naig Gueguen
- INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France
| | - François Halloy
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - David Moore
- Institute of Genetic Medicine, Centre for Life, Newcastle University and Wellcome Trust Centre for Mitochondrial Research, NE1 3BZ Newcastle upon Tyne, UK
| | - Patrizia Amati-Bonneau
- INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France
| | - Gael Manes
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Maxime Hebrard
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Béatrice Bocquet
- Centre de Référence pour les Maladies Sensorielles Génétiques, Hôpital Gui de Chauliac, CHRU Montpellier, 34090 Montpellier, France
| | - Mélanie Quiles
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Camille Piro-Mégy
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Marisa Teigell
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Cécile Delettre
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Mireille Rossel
- INSERM U710, Laboratoire MMDN EPHE, 34090 Montpellier, France
| | - Isabelle Meunier
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France; Centre de Référence pour les Maladies Sensorielles Génétiques, Hôpital Gui de Chauliac, CHRU Montpellier, 34090 Montpellier, France
| | - Markus Preising
- Department of Ophthalmology, Justus-Liebig University, 35392 Giessen, Germany
| | - Birgit Lorenz
- Department of Ophthalmology, Justus-Liebig University, 35392 Giessen, Germany
| | - Valerio Carelli
- IRCCS, Institute of Neurological Sciences of Bologna, Bellaria Hospital, 40139 Bologna, Italy; Department of Biomedical and NeuroMotor Sciences, University of Bologna, 40139 Bologna, Italy
| | - Patrick F Chinnery
- Institute of Genetic Medicine, Centre for Life, Newcastle University and Wellcome Trust Centre for Mitochondrial Research, NE1 3BZ Newcastle upon Tyne, UK
| | - Patrick Yu-Wai-Man
- Institute of Genetic Medicine, Centre for Life, Newcastle University and Wellcome Trust Centre for Mitochondrial Research, NE1 3BZ Newcastle upon Tyne, UK; Newcastle Eye Centre, Royal Victoria Infirmary, NE1 4LP Newcastle upon Tyne, UK
| | - Josseline Kaplan
- INSERM U1163, Hôpital Necker Enfants-Malades, 75015 Paris, France
| | - Agathe Roubertie
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France; Centre de Référence pour les Maladies Sensorielles Génétiques, Hôpital Gui de Chauliac, CHRU Montpellier, 34090 Montpellier, France
| | - Abdelhamid Barakat
- Laboratoire de Génétique Moléculaire Humaine, Département de Recherche Scientifique, Institut Pasteur du Maroc, 20360 Casablanca, Morocco
| | - Dominique Bonneau
- INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France
| | - Pascal Reynier
- INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France
| | | | - Pascale Bomont
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France
| | - Christian P Hamel
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France; Centre de Référence pour les Maladies Sensorielles Génétiques, Hôpital Gui de Chauliac, CHRU Montpellier, 34090 Montpellier, France
| | - Guy Lenaers
- INSERM U1051, Institut des Neurosciences de Montpellier, Université de Montpellier, 34090 Montpellier, France; INSERM U1083, CNRS 6214, Département de Biochimie et Génétique, Université LUNAM and Centre Hospitalier Universitaire, 49933 Angers, France.
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Fares-Taie L, Gerber S, Tawara A, Ramirez-Miranda A, Douet JY, Verdin H, Guilloux A, Zenteno J, Kondo H, Moisset H, Passet B, Yamamoto K, Iwai M, Tanaka T, Nakamura Y, Kimura W, Bole-Feysot C, Vilotte M, Odent S, Vilotte JL, Munnich A, Regnier A, Chassaing N, De Baere E, Raymond-Letron I, Kaplan J, Calvas P, Roche O, Rozet JM. Submicroscopic deletions at 13q32.1 cause congenital microcoria. Am J Hum Genet 2015; 96:631-9. [PMID: 25772937 DOI: 10.1016/j.ajhg.2015.01.014] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2014] [Accepted: 01/20/2015] [Indexed: 11/25/2022] Open
Abstract
Congenital microcoria (MCOR) is a rare autosomal-dominant disorder characterized by inability of the iris to dilate owing to absence of dilator pupillae muscle. So far, a dozen MCOR-affected families have been reported worldwide. By using whole-genome oligonucleotide array CGH, we have identified deletions at 13q32.1 segregating with MCOR in six families originating from France, Japan, and Mexico. Breakpoint sequence analyses showed nonrecurrent deletions in 5/6 families. The deletions varied from 35 kbp to 80 kbp in size, but invariably encompassed or interrupted only two genes: TGDS encoding the TDP-glucose 4,6-dehydratase and GPR180 encoding the G protein-coupled receptor 180, also known as intimal thickness-related receptor (ITR). Unlike TGDS which has no known function in muscle cells, GPR180 is involved in the regulation of smooth muscle cell growth. The identification of a null GPR180 mutation segregating over two generations with iridocorneal angle dysgenesis, which can be regarded as a MCOR endophenotype, is consistent with the view that deletions of this gene, with or without the loss of elements regulating the expression of neighboring genes, are the cause of MCOR.
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11
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Fares-Taie L, Gerber S, Chassaing N, Clayton-Smith J, Hanein S, Silva E, Serey M, Serre V, Gérard X, Baumann C, Plessis G, Demeer B, Brétillon L, Bole C, Nitschke P, Munnich A, Lyonnet S, Calvas P, Kaplan J, Ragge N, Rozet JM. ALDH1A3 mutations cause recessive anophthalmia and microphthalmia. Am J Hum Genet 2013; 92:265-70. [PMID: 23312594 DOI: 10.1016/j.ajhg.2012.12.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2012] [Revised: 10/15/2012] [Accepted: 12/07/2012] [Indexed: 12/30/2022] Open
Abstract
Anophthalmia and microphthalmia (A/M) are early-eye-development anomalies resulting in absent or small ocular globes, respectively. A/M anomalies occur in syndromic or nonsyndromic forms. They are genetically heterogeneous, some mutations in some genes being responsible for both anophthalmia and microphthalmia. Using a combination of homozygosity mapping, exome sequencing, and Sanger sequencing, we identified homozygosity for one splice-site and two missense mutations in the gene encoding the A3 isoform of the aldehyde dehydrogenase 1 (ALDH1A3) in three consanguineous families segregating A/M with occasional orbital cystic, neurological, and cardiac anomalies. ALDH1A3 is a key enzyme in the formation of a retinoic acid gradient along the dorso-ventral axis during early eye development. Transitory expression of mutant ALDH1A3 open reading frames showed that both missense mutations reduce the accumulation of the enzyme, potentially leading to altered retinoic acid synthesis. Although the role of retinoic acid signaling in eye development is well established, our findings provide genetic evidence of a direct link between retinoic-acid-synthesis dysfunction and early-eye-development anomalies in humans.
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Perrault I, Hanein S, Zanlonghi X, Serre V, Nicouleau M, Defoort-Delhemmes S, Delphin N, Fares-Taie L, Gerber S, Xerri O, Edelson C, Goldenberg A, Duncombe A, Le Meur G, Hamel C, Silva E, Nitschke P, Calvas P, Munnich A, Roche O, Dollfus H, Kaplan J, Rozet JM. Mutations in NMNAT1 cause Leber congenital amaurosis with early-onset severe macular and optic atrophy. Nat Genet 2012; 44:975-7. [DOI: 10.1038/ng.2357] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2012] [Accepted: 06/27/2012] [Indexed: 11/09/2022]
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Perrault I, Hanein S, Gerard X, Delphin N, Fares-Taie L, Gerber S, Pelletier V, Mercé E, Dollfus H, Puech B, Defoort-Dhellemmes S, Petersen MD, Zafeiriou D, Munnich A, Kaplan J, Roche O, Rozet JM. Spectrum of SPATA7 mutations in Leber congenital amaurosis and delineation of the associated phenotype. Hum Mutat 2010; 31:E1241-50. [PMID: 20104588 DOI: 10.1002/humu.21203] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Leber congenital amaurosis (LCA) is the earliest and most severe retinal degeneration. It may present as a congenital stationary cone-rod dystrophy (LCA type I) or a progressive yet severe rod-cone dystrophy (LCA type II). Twelve LCA genes have been identified, three of which account for Type I and nine for LCA type II. All proteins encoded by these genes but two are preferentially expressed in the retina and are responsible for non-syndromic LCA only. By contrast LCA5 and CEP290 are widely expressed and mutations in this latter result in a variety of phenotypes from non-syndromic retinal degeneration to pleiotropic disorders including senior-Loken (SNLS) and Joubert syndromes (JBTS). Recently, mutations in the widely expressed gene SPATA7 were reported to cause LCA or juvenile retinitis pigmentosa. The purpose of this study was i) to determine the level of expression of two major alternative SPATA7 transcripts in a large range of tissues and ii) to assess the involvement of this novel gene in a large cohort of unrelated patients affected with LCA (n = 134). Here, we report high SPATA7expression levels in retina, brain and testis with differential expression of the two transcripts. SPATA7 mutations were identified in few families segregating non-syndromic LCA (n = 4/134). Six different mutations were identified, four of which are novel; All affected both SPATA7 transcripts. The clinical evaluation of patients suggested that SPATA7 mutations account for the rod-cone dystrophy type of the disease.
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Affiliation(s)
- Isabelle Perrault
- Unité de Recherches Génétique et Epigénétique des Maladies Métaboliques, Neurosensorielles et du Développement, INSERM U781 and Université Paris Descartes, CHU Necker Enfants Malades, Paris, France
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Papon JF, Perrault I, Coste A, Louis B, Gérard X, Hanein S, Fares-Taie L, Gerber S, Defoort-Dhellemmes S, Vojtek AM, Kaplan J, Rozet JM, Escudier E. Abnormal respiratory cilia in non-syndromic Leber congenital amaurosis with CEP290 mutations. J Med Genet 2010; 47:829-34. [PMID: 20805370 DOI: 10.1136/jmg.2010.077883] [Citation(s) in RCA: 38] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
BACKGROUND Leber congenital amaurosis (LCA) is the earliest and most severe inherited retinal degeneration. Isolated forms of LCA frequently result from mutation of the CEP290 gene which is expressed in various ciliated tissues. METHODS Seven LCA patients with CEP290 mutations were investigated to study otorhinolaryngologic phenotype and respiratory cilia. Nasal biopsies and brushing were performed to study cilia ultrastructure using transmission electron microscopy and ciliary beating using high-speed videomicroscopy, respectively. CEP290 expression in normal nasal epithelium was studied using real-time RT-PCR. RESULTS When electron microscopy was feasible (5/7), high levels of respiratory cilia defects were detected. The main defects concerned dynein arms, central complex and/or peripheral microtubules. All patients had a rarefaction of ciliated cells and a variable proportion of short cilia. Frequent but moderate and heterogeneous clinical and ciliary beating abnormalities were found. CEP290 was highly expressed in the neural retina and nasal epithelial cells compared with other tissues. DISCUSSION These data provide the first clear demonstration of respiratory cilia ultrastructural defects in LCA patients with CEP290 mutations. The frequency of these findings in LCA patients along with the high expression of CEP290 in nasal epithelium suggest that CEP290 has an important role in the proper development of both the respiratory ciliary structures and the connecting cilia of photoreceptors. The presence of respiratory symptoms in patients could represent additional clinical criteria to direct CEP290 genotyping of patients affected with the genetically heterogeneous cone-rod dystrophy subtype of LCA.
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Hanein S, Perrault I, Roche O, Gerber S, Khadom N, Rio M, Boddaert N, Jean-Pierre M, Brahimi N, Serre V, Chretien D, Delphin N, Fares-Taie L, Lachheb S, Rotig A, Meire F, Munnich A, Dufier JL, Kaplan J, Rozet JM. TMEM126A, encoding a mitochondrial protein, is mutated in autosomal-recessive nonsyndromic optic atrophy. Am J Hum Genet 2009; 84:493-8. [PMID: 19327736 DOI: 10.1016/j.ajhg.2009.03.003] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2009] [Revised: 03/03/2009] [Accepted: 03/04/2009] [Indexed: 11/28/2022] Open
Abstract
Nonsyndromic autosomal-recessive optic neuropathies are rare conditions of unknown genetic and molecular origin. Using an approach of whole-genome homozygosity mapping and positional cloning, we have identified the first gene, to our knowledge, responsible for this condition, TMEM126A, in a large multiplex inbred Algerian family and subsequently in three other families originating from the Maghreb. TMEM126A is conserved in higher eukaryotes and encodes a transmembrane mitochondrial protein of unknown function, supporting the view that mitochondrial dysfunction may be a hallmark of inherited optic neuropathies including isolated autosomal-recessive forms.
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Affiliation(s)
- Sylvain Hanein
- Département de Génétique, Université Paris Descartes, Unité INSERM U781, Hôpital Necker-Enfants Malades, 75015 Paris, France
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