1. Genetic and functional analyses of SHANK2 mutations suggest a multiple hit model of autism spectrum disorders
- Author
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Christian Proepper, Dominique Bonneau, Catalina Betancur, Sarah Curran, Astrid M. Vicente, Henrik Anckarsäter, Elena Bacchelli, Sabine M. Klauck, Eftichia Duketis, Guiomar Oliveira, Fabien Fauchereau, Richard Delorme, Irma Järvelä, I. Carina Gillberg, Marina Konyukh, Stephen W. Scherer, Pauline Chaste, Elena Maestrini, Guillaume Huguet, Dalila Pinto, David Skuse, Marie-Christine Mouren, Béatrice Regnault, Nathalie Lemière, Jonas Melke, Christopher Gillberg, Bárbara Oliveira, Maria Råstam, Thomas Bourgeron, Marnie Kopp, Marc Delepine, Oriane Mercati, Raija Vanhala, Luigi Mazzone, Marion Leboyer, Richard Holt, Agatino Battaglia, Fiorella Minopoli, Katri Kantojärvi, Diana Zelenika, Liliana Ruta, Roberto Toro, Ana Filipa Sequeira, Françoise Devillard, Brigitte Assouline, Martin Poot, Elodie Ey, Regina Waltes, Vincent Guinchat, Tobias M. Boeckers, Jutta Heinrich, Anthony P. Monaco, Gudrun Nygren, Fritz Poustka, Mark Lathrop, David A. Collier, Claire S. Leblond, Patrick Bolton, Christine M. Freitag, Andreas G. Chiocchetti, Betancur, Catalina, Génétique Humaine et Fonctions Cognitives, Institut Pasteur [Paris] (IP)-Centre National de la Recherche Scientifique (CNRS), Universität Ulm - Ulm University [Ulm, Allemagne], Service de psychopathologie de l'enfant et de l'adolescent, Assistance publique - Hôpitaux de Paris (AP-HP) (AP-HP)-Hôpital Robert Debré-Université Paris Diderot - Paris 7 (UPD7), Physiopathologie des Maladies du Système Nerveux Central, Université Pierre et Marie Curie - Paris 6 (UPMC)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Department of Child and Adolescent Psychiatry, University of Gothenburg (GU), Forensic Psychiatry, Lund University [Lund], Department of Pharmacology, Génotypage des Eucaryotes (Plate-Forme), Institut Pasteur [Paris] (IP), Behavioural and Brain Sciences Unit, Institute of Child Health, University College of London [London] (UCL), University Medical Center [Utrecht], The Wellcome Trust Centre for Human Genetics [Oxford], University of Oxford, Department of Medical and Clinical Genetics [Helsinki], Haartman Institute [Helsinki], Faculty of Medecine [Helsinki], Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Faculty of Medecine [Helsinki], Helsingin yliopisto = Helsingfors universitet = University of Helsinki-Helsingin yliopisto = Helsingfors universitet = University of Helsinki, Academic Department of Child and Adolescent Psychiatry, Institute of Psychiatry, King‘s College London, Social, Genetic and Developmental Psychiatry Centre (SGDP), Institute of psychiatry, Division of Molecular Genome Analysis, German Cancer Research Center - Deutsches Krebsforschungszentrum [Heidelberg] (DKFZ), Department of Child and Adolescent Psychiatry, Psychosomatics and Psychotherapy, Goethe-Universität Frankfurt am Main, Department of Pharmacy and Biotechnology, Alma Mater Studiorum Università di Bologna [Bologna] (UNIBO), Institute of Biotechnology, Department of Psychiatry and Behavioral Sciences [Stanford], Stanford Medicine, Stanford University-Stanford University, Division of Child Neurology and Psychiatry, Department of Paediatrics, Università degli studi di Catania = University of Catania (Unict), Instituto Nacional de Saùde Dr Ricardo Jorge [Portugal] (INSA), BioFIG, Center for Biodiversity, Functional and Integrative Genomics, Unidade de Neurodesenvolvimento e Autismo (UNDA), Hospital Pediatrico de Coimbra, Human Genetics Center, The University of Texas Health Science Center at Houston (UTHealth), The Centre for Applied Genomics, Toronto, The Hospital for sick children [Toronto] (SickKids)-University of Toronto-Department of Molecular Genetics-McLaughlin Centre, Program in Genetics and Genomic Biology, Hospital for Sick Children-University of Toronto McLaughlin Centre, Centre National de Génotypage (CNG), Commissariat à l'énergie atomique et aux énergies alternatives (CEA), Centre Hospitalier Universitaire d'Angers (CHU Angers), PRES Université Nantes Angers Le Mans (UNAM), Biologie Neurovasculaire Intégrée (BNVI), Université d'Angers (UA)-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Unité Pédopsychiatrique et Neuropédiatrique de Diagnostic et d'Evaluation des Troubles Envahissants du Développement, Centre Alpin de DIagnostic Précoce de l'Autisme - CADIPA-Centre Hospitalier Alpes Isère, Département de génétique et procréation, Université Joseph Fourier - Grenoble 1 (UJF)-Hôpital Couple-Enfant, Institut Mondor de Recherche Biomédicale (IMRB), Institut National de la Santé et de la Recherche Médicale (INSERM)-IFR10-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12), Institute for Anatomy and Cell Biology, Department of Medical and Clinical Genetics, Leblond C.S., Heinrich J., Delorme R., Proepper C., Betancur C., Huguet G., Konyukh M., Chaste P| Ey E., Rastam M., Anckarsäter H., Nygren G., Gillberg IC., Melke J., Toro R., Regnault B., Fauchereau F., Mercati O., Lemière N., Skuse D., Poot M., Holt R., Monaco A.P., Järvelä I., Kantojärvi K., Vanhala R., Curran S., Collier D.A., Bolton P., Chiocchetti A., Klauck S.M., Poustka F., Freitag C.M., Waltes R., Kopp M., Duketis E., Bacchelli E., Minopoli F., Ruta L., Battaglia A., Mazzone L., Maestrini E., Sequeira A.F., Oliveira B., Vicente A., Oliveira G., Pinto D., Scherer S.W., Zelenika D., Delepine M., Lathrop M., Bonneau D., Guinchat V., Devillard F., Assouline B., Mouren M.C., Leboyer M., Gillberg C., Boeckers T.M., Bourgeron T., Institut Pasteur [Paris]-Centre National de la Recherche Scientifique (CNRS), Institute of Anatomy and Cell Biology, Ulm University, University of Lund, Institut Pasteur [Paris], University of Oxford [Oxford], University of Helsinki-University of Helsinki-Faculty of Medecine [Helsinki], University of Helsinki-University of Helsinki, Università degli studi di Catania [Catania], and Institut National de la Santé et de la Recherche Médicale (INSERM)-Université Paris-Est Créteil Val-de-Marne - Paris 12 (UPEC UP12)-IFR10
- Subjects
Male ,Gene Dosage ,Receptors, Nicotinic ,MESH: Protein Isoforms ,HIDDEN-MARKOV MODEL ,0302 clinical medicine ,MESH: Child ,Protein Isoforms ,Tissue Distribution ,MESH: Nerve Tissue Proteins ,Child ,Neurons ,0303 health sciences ,MESH: Alternative Splicing ,PSYCHIATRIC-DISORDERS ,CHRNA7 ,MESH: Sequence Deletion ,3. Good health ,Autism spectrum disorder ,Child, Preschool ,Medicine ,Adaptor Proteins, Signal Transducing ,Adult ,Alternative Splicing ,Cell Line ,Child Development Disorders, Pervasive ,Female ,Gene Expression Regulation ,Humans ,Nerve Tissue Proteins ,RNA Splice Sites ,Sequence Deletion ,Synapses ,alpha7 Nicotinic Acetylcholine Receptor ,Child Development Disorders ,education ,COPY-NUMBER VARIATION ,Molecular Genetics ,03 medical and health sciences ,Genetics ,AUTISM ,MESH: Tissue Distribution ,Molecular Biology ,Biology ,SNP GENOTYPING DATA ,Ecology, Evolution, Behavior and Systematics ,Pervasive ,MESH: Adaptor Proteins, Signal Transducing ,[SDV.GEN]Life Sciences [q-bio]/Genetics ,MESH: Humans ,RECURRENT MICRODELETIONS ,MESH: Child, Preschool ,Signal Transducing ,MESH: Adult ,SCAFFOLDING PROTEIN SHANK3 ,medicine.disease ,Human genetics ,MESH: Cell Line ,MESH: Female ,030217 neurology & neurosurgery ,Neuroscience ,Cancer Research ,MESH: Neurons ,MESH: RNA Splice Sites ,[SDV.GEN] Life Sciences [q-bio]/Genetics ,Bioinformatics ,Nicotinic ,MESH: Child Development Disorders, Pervasive ,MESH: Gene Dosage ,MESH: Synapses ,POSTSYNAPTIC DENSITY ,Receptors ,Copy-number variation ,Genetics (clinical) ,Psychiatry ,Adaptor Proteins ,MESH: Gene Expression Regulation ,Settore MED/39 - Neuropsichiatria Infantile ,SHANK2 ,Mental Health ,MESH: Receptors, Nicotinic ,Research Article ,lcsh:QH426-470 ,15Q13.3 MICRODELETIONS ,Genetic variation ,mental disorders ,medicine ,ddc:610 ,Preschool ,Gene ,030304 developmental biology ,MESH: Male ,lcsh:Genetics ,DE-NOVO MUTATIONS ,Perturbações do Desenvolvimento Infantil e Saúde Mental ,biology.protein ,Autism ,3111 Biomedicine ,MENTAL-RETARDATION - Abstract
Autism spectrum disorders (ASD) are a heterogeneous group of neurodevelopmental disorders with a complex inheritance pattern. While many rare variants in synaptic proteins have been identified in patients with ASD, little is known about their effects at the synapse and their interactions with other genetic variations. Here, following the discovery of two de novo SHANK2 deletions by the Autism Genome Project, we identified a novel 421 kb de novo SHANK2 deletion in a patient with autism. We then sequenced SHANK2 in 455 patients with ASD and 431 controls and integrated these results with those reported by Berkel et al. 2010 (n = 396 patients and n = 659 controls). We observed a significant enrichment of variants affecting conserved amino acids in 29 of 851 (3.4%) patients and in 16 of 1,090 (1.5%) controls (P = 0.004, OR = 2.37, 95% CI = 1.23–4.70). In neuronal cell cultures, the variants identified in patients were associated with a reduced synaptic density at dendrites compared to the variants only detected in controls (P = 0.0013). Interestingly, the three patients with de novo SHANK2 deletions also carried inherited CNVs at 15q11–q13 previously associated with neuropsychiatric disorders. In two cases, the nicotinic receptor CHRNA7 was duplicated and in one case the synaptic translation repressor CYFIP1 was deleted. These results strengthen the role of synaptic gene dysfunction in ASD but also highlight the presence of putative modifier genes, which is in keeping with the “multiple hit model” for ASD. A better knowledge of these genetic interactions will be necessary to understand the complex inheritance pattern of ASD., Author Summary Autism spectrum disorders (ASD) are a heterogeneous group of neurodevelopmental disorders with a complex inheritance pattern. While mutations in several genes have been identified in patients with ASD, little is known about their effects on neuronal function and their interaction with other genetic variations. Using a combination of genetic and functional approaches, we identified novel SHANK2 mutations including a de novo loss of one copy of the SHANK2 gene in a patient with autism and several mutations observed in patients that reduced neuronal cell contacts in vitro. Further genomic analysis of three patients carrying de novo SHANK2 deletions identified additional rare genomic imbalances previously associated with neuropsychiatric disorders. Taken together, these results strengthen the role of synaptic gene dysfunction in ASD but also highlight the presence of putative modifier genes, which is in keeping with the “multiple hit model” for ASD. A better knowledge of these genetic interactions will be necessary to understand the complex inheritance pattern of ASD.
- Published
- 2012
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