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Dentici ML, Bergonzini P, Scibelli F, Caciolo C, De Rose P, Cumbo F, Alesi V, Capolino R, Zanni G, Sinibaldi L, Novelli A, Tartaglia M, Digilio MC, Dallapiccola B, Vicari S, Alfieri P. 7q11.23 Microduplication Syndrome: Clinical and Neurobehavioral Profiling. Brain Sci 2020; 10:E839. [PMID: 33187326 PMCID: PMC7697259 DOI: 10.3390/brainsci10110839] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2020] [Revised: 11/03/2020] [Accepted: 11/06/2020] [Indexed: 11/20/2022] Open
Abstract
7q11.23 Microduplication (dup7q11.23) syndrome is a rare autosomal dominant disorder due to a recurring 1.5 to 1.8 Mb duplication of the Williams-Beuren Syndrome critical region. Dup7q11.23 has been associated with several neuro-behavioral characteristics such as low cognitive and adaptive functioning, expressive language impairment, anxiety problems and autistic features. In the present study, we analyze the clinical features of ten individuals in which array-CGH detected dup7q11.23, spanning from 1.4 to 2.1 Mb. The clinical characteristics associated with dup7q11.23 are discussed with respect to its reciprocal deletion. Consistent with previous studies, we confirm that individuals with dup7q11.23 syndrome do not have a homogeneous clinical profile, although some recurring dysmorphic features were found, including macrocephaly, prominent forehead, elongated palpebral fissures, thin lip vermilion and microstomia. Minor congenital malformations include patent ductus arteriosus, cryptorchidism and pes planus. A common finding is hypotonia and joint laxity, resulting in mild motor delay. Neuropsychological and psychodiagnostic assessment confirm that mild cognitive impairment, expressive language deficits and anxiety are recurring neurobehavioral features. New insights into adaptive, psychopathological and neurodevelopmental profiles are discussed.
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Affiliation(s)
- Maria Lisa Dentici
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Paola Bergonzini
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Francesco Scibelli
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Cristina Caciolo
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Paola De Rose
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Francesca Cumbo
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
| | - Viola Alesi
- Laboratory of Medical Genetics, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (V.A.); (A.N.)
| | - Rossella Capolino
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Ginevra Zanni
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
- Unit of Neuromuscular and Neurodegenerative Disorders, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy
| | - Lorenzo Sinibaldi
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Antonio Novelli
- Laboratory of Medical Genetics, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (V.A.); (A.N.)
| | - Marco Tartaglia
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Maria Cristina Digilio
- Medical Genetic Unit, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (M.L.D.); (R.C.); (L.S.); (M.C.D.)
- Genetics and Rare Diseases Research Division, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (G.Z.); (M.T.)
| | - Bruno Dallapiccola
- Scientific Directorate, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy;
| | - Stefano Vicari
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
- Department of Life Sciences and Public Health, Catholic University, 00168 Rome, Italy
| | - Paolo Alfieri
- Child and Adolescent Neuropsychiatry Unit, Department of Neurological and Psychiatric Science, Bambino Gesù Children’s Hospital, IRCCS, 00165 Rome, Italy; (P.B.); (F.S.); (C.C.); (P.D.R.); (F.C.); (S.V.)
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Yuan Z, Chen P, Zhang T, Shen B, Chen L. Agenesis and Hypomyelination of Corpus Callosum in Mice Lacking Nsun5, an RNA Methyltransferase. Cells 2019; 8:cells8060552. [PMID: 31174389 PMCID: PMC6627898 DOI: 10.3390/cells8060552] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2019] [Revised: 06/03/2019] [Accepted: 06/04/2019] [Indexed: 11/16/2022] Open
Abstract
Williams-Beuren syndrome (WBS) is caused by microdeletions of 28 genes and is characterized by cognitive disorder and hypotrophic corpus callosum (CC). Nsun5 gene, which encodes cytosine-5 RNA methyltransferase, is located in the deletion loci of WBS. We have reported that single-gene knockout of Nsun5 (Nsun5-KO) in mice impairs spatial cognition. Herein, we report that postnatal day (PND) 60 Nsun5-KO mice showed the volumetric reduction of CC with a decline in the number of myelinated axons and loose myelin sheath. Nsun5 was highly expressed in callosal oligodendrocyte precursor cells (OPCs) and oligodendrocytes (OLs) from PND7 to PND28. The numbers of OPCs and OLs in CC of PND7-28 Nsun5-KO mice were significantly reduced compared to wild-type littermates. Immunohistochemistry and Western blot analyses of myelin basic protein (MBP) showed the hypomyelination in the CC of PND28 Nsun5-KO mice. The Nsun5 deletion suppressed the proliferation of OPCs but did not affect transition of radial glial cells into OPCs or cell cycle exit of OPCs. The protein levels, rather than transcriptional levels, of CDK1, CDK2 and Cdc42 in the CC of PND7 and PND14 Nsun5-KO mice were reduced. These findings point to the involvement of Nsun5 deletion in agenesis of CC observed in WBS.
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Affiliation(s)
- Zihao Yuan
- State Key Laboratory of Reproductive Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China.
- Department of Physiology, Nanjing Medical University, Nanjing 211166, China.
| | - Peipei Chen
- State Key Laboratory of Reproductive Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China.
- Department of Physiology, Nanjing Medical University, Nanjing 211166, China.
| | - Tingting Zhang
- State Key Laboratory of Reproductive Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China.
- Department of Physiology, Nanjing Medical University, Nanjing 211166, China.
| | - Bin Shen
- State Key Laboratory of Reproductive Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China.
| | - Ling Chen
- State Key Laboratory of Reproductive Medicine, Department of Physiology, Nanjing Medical University, Nanjing 211166, China.
- Department of Physiology, Nanjing Medical University, Nanjing 211166, China.
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Montagne L, Derhourhi M, Piton A, Toussaint B, Durand E, Vaillant E, Thuillier D, Gaget S, De Graeve F, Rabearivelo I, Lansiaux A, Lenne B, Sukno S, Desailloud R, Cnop M, Nicolescu R, Cohen L, Zagury JF, Amouyal M, Weill J, Muller J, Sand O, Delobel B, Froguel P, Bonnefond A. CoDE-seq, an augmented whole-exome sequencing, enables the accurate detection of CNVs and mutations in Mendelian obesity and intellectual disability. Mol Metab 2018; 13:1-9. [PMID: 29784605 PMCID: PMC6026315 DOI: 10.1016/j.molmet.2018.05.005] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2018] [Revised: 05/04/2018] [Accepted: 05/07/2018] [Indexed: 01/15/2023] Open
Abstract
Objective The molecular diagnosis of extreme forms of obesity, in which accurate detection of both copy number variations (CNVs) and point mutations, is crucial for an optimal care of the patients and genetic counseling for their families. Whole-exome sequencing (WES) has benefited considerably this molecular diagnosis, but its poor ability to detect CNVs remains a major limitation. We aimed to develop a method (CoDE-seq) enabling the accurate detection of both CNVs and point mutations in one step. Methods CoDE-seq is based on an augmented WES method, using probes distributed uniformly throughout the genome. CoDE-seq was validated in 40 patients for whom chromosomal DNA microarray was available. CNVs and mutations were assessed in 82 children/young adults with suspected Mendelian obesity and/or intellectual disability and in their parents when available (ntotal = 145). Results CoDE-seq not only detected all of the 97 CNVs identified by chromosomal DNA microarrays but also found 84 additional CNVs, due to a better resolution. When compared to CoDE-seq and chromosomal DNA microarrays, WES failed to detect 37% and 14% of CNVs, respectively. In the 82 patients, a likely molecular diagnosis was achieved in >30% of the patients. Half of the genetic diagnoses were explained by CNVs while the other half by mutations. Conclusions CoDE-seq has proven cost-efficient and highly effective as it avoids the sequential genetic screening approaches currently used in clinical practice for the accurate detection of CNVs and point mutations. Whole-exome sequencing (WES) poorly detects CNVs. Whole-genome sequencing remains expensive and hard to handle in clinical practice. CoDE-seq (based on an augmented WES protocol) accurately detect CNVs. CoDE-seq is highly effective for the diagnosis of obesity & intellectual disability.
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Affiliation(s)
- Louise Montagne
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France; Department of Pediatrics, Saint Antoine Pediatric Hospital, Saint Vincent de Paul Hospital, Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), Catholic University of Lille, Lille, France.
| | - Mehdi Derhourhi
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France
| | - Amélie Piton
- Molecular diagnostic laboratory, Strasbourg University Hospitals, Strasbourg, France
| | - Bénédicte Toussaint
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France
| | - Emmanuelle Durand
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France
| | - Emmanuel Vaillant
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France
| | - Dorothée Thuillier
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France
| | - Stefan Gaget
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France
| | - Franck De Graeve
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France
| | - Iandry Rabearivelo
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France
| | - Amélie Lansiaux
- Department of Medical Research, Saint Philibert Hospital, Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), Lomme, France
| | - Bruno Lenne
- Department of Cytogenetics-Medical Genetics, Saint Vincent de Paul Hospital, Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), Catholic University of Lille, Lille, France
| | - Sylvie Sukno
- Department of Paediatric Neurology, Saint Antoine Paediatric Hospital, Saint Vincent de Paul Hospital, Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), Catholic University of Lille, Lille, France
| | - Rachel Desailloud
- Department of Endocrinology-Nutrition, University of Picardie Jules Verne, Amiens, France
| | - Miriam Cnop
- ULB Center for Diabetes Research, Université Libre de Bruxelles, Brussels, Belgium; Division of Endocrinology, Erasmus Hospital, Université Libre de Bruxelles, Brussels, Belgium
| | - Ramona Nicolescu
- Department of Pediatrics, General Hospital Citadelle, Liège, Belgium
| | - Lior Cohen
- Genetic Institute, Schneider Children's Medical Center, Petah Tikva, Israel
| | - Jean-François Zagury
- Laboratoire Génomique, Bioinformatique et Applications, EA4627, Conservatoire National des Arts et Métiers, Paris, France
| | - Mélanie Amouyal
- Inserm U1141, Robert Debré Hospital, Paris Diderot-Paris 7 University, Paris, France
| | - Jacques Weill
- Pediatric Endocrine Department, Lille hospital, Lille, France
| | - Jean Muller
- Molecular diagnostic laboratory, Strasbourg University Hospitals, Strasbourg, France; Inserm U1112, Fédération de Médecine Translationnelle de Strasbourg (FMTS), University of Strasbourg, Strasbourg, France
| | - Olivier Sand
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France
| | - Bruno Delobel
- Department of Cytogenetics-Medical Genetics, Saint Vincent de Paul Hospital, Groupement des Hôpitaux de l'Institut Catholique de Lille (GHICL), Catholic University of Lille, Lille, France
| | - Philippe Froguel
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France; Department of Medicine, Section of Genomics of Common Disease, Imperial College London, London, United Kingdom.
| | - Amélie Bonnefond
- CNRS UMR 8199, European Genomic Institute for Diabetes (EGID), Institut Pasteur de Lille, University of Lille, Lille, France; Department of Medicine, Section of Genomics of Common Disease, Imperial College London, London, United Kingdom.
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