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Romero DM, Zaidi D, Cifuentes-Diaz C, Maillard C, Grannec G, Selloum M, Birling MC, Bahi-Buisson N, Francis F. A human dynein heavy chain mutation impacts cortical progenitor cells causing developmental defects, reduced brain size and altered brain architecture. Neurobiol Dis 2023; 180:106085. [PMID: 36933672 DOI: 10.1016/j.nbd.2023.106085] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 02/27/2023] [Accepted: 03/14/2023] [Indexed: 03/18/2023] Open
Abstract
Dynein heavy chain (DYNC1H1) mutations can either lead to severe cerebral cortical malformations, or alternatively may be associated with the development of spinal muscular atrophy with lower extremity predominance (SMA-LED). To assess the origin of such differences, we studied a new Dync1h1 knock-in mouse carrying the cortical malformation p.Lys3334Asn mutation. Comparing with an existing neurodegenerative Dync1h1 mutant (Legs at odd angles, Loa, +/p.Phe580Tyr), we assessed Dync1h1's roles in cortical progenitor and especially radial glia functions during embryogenesis, and assessed neuronal differentiation. p.Lys3334Asn /+ mice exhibit reduced brain and body size. Embryonic brains show increased and disorganized radial glia: interkinetic nuclear migration occurs in mutants, however there are increased basally positioned cells and abventricular mitoses. The ventricular boundary is disorganized potentially contributing to progenitor mislocalization and death. Morphologies of mitochondria and Golgi apparatus are perturbed in vitro, with different effects also in Loa mice. Perturbations of neuronal migration and layering are also observed in p.Lys3334Asn /+ mutants. Overall, we identify specific developmental effects due to a severe cortical malformation mutation in Dync1h1, highlighting the differences with a mutation known instead to primarily affect motor function.
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Affiliation(s)
- Delfina M Romero
- INSERM UMR-S 1270, F-75005 Paris, France; Sorbonne University, F-75005 Paris, France; Institut du Fer à Moulin, F-75005 Paris, France
| | - Donia Zaidi
- INSERM UMR-S 1270, F-75005 Paris, France; Sorbonne University, F-75005 Paris, France; Institut du Fer à Moulin, F-75005 Paris, France
| | - Carmen Cifuentes-Diaz
- INSERM UMR-S 1270, F-75005 Paris, France; Sorbonne University, F-75005 Paris, France; Institut du Fer à Moulin, F-75005 Paris, France
| | - Camille Maillard
- Laboratory of Genetics and Development of the Cerebral Cortex, INSERM UMR-S 1163, Imagine Institute, Paris, France; Paris Descartes-Sorbonne Paris Cité University, Imagine Institute, Paris, France
| | - Gael Grannec
- INSERM UMR-S 1270, F-75005 Paris, France; Sorbonne University, F-75005 Paris, France; Institut du Fer à Moulin, F-75005 Paris, France
| | - Mohammed Selloum
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch, France; Institut National de la Santé et de la Recherche Médicale, U964 Illkirch, France; Université de Strasbourg, Illkirch, France; CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch-Graffenstaden, France
| | - Marie-Christine Birling
- Institut de Génétique et de Biologie Moléculaire et Cellulaire, Illkirch, France; Centre National de la Recherche Scientifique, UMR7104, Illkirch, France; Institut National de la Santé et de la Recherche Médicale, U964 Illkirch, France; Université de Strasbourg, Illkirch, France; CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch-Graffenstaden, France
| | - Nadia Bahi-Buisson
- Laboratory of Genetics and Development of the Cerebral Cortex, INSERM UMR-S 1163, Imagine Institute, Paris, France; Paris Descartes-Sorbonne Paris Cité University, Imagine Institute, Paris, France; Pediatric Neurology APHP- Necker Enfants Malades University Hospital, Paris, France.; Centre de Référence, Déficiences Intellectuelles de Causes Rares, APHP- Necker Enfants Malades University Hospital, Paris, France
| | - Fiona Francis
- INSERM UMR-S 1270, F-75005 Paris, France; Sorbonne University, F-75005 Paris, France; Institut du Fer à Moulin, F-75005 Paris, France.
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Zambon AA, Pini V, Bosco L, Falzone YM, Munot P, Muntoni F, Previtali SC. Early onset hereditary neuronopathies: an update on non-5q motor neuron diseases. Brain 2022; 146:806-822. [PMID: 36445400 PMCID: PMC9976982 DOI: 10.1093/brain/awac452] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [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: 07/08/2022] [Revised: 10/21/2022] [Accepted: 11/12/2022] [Indexed: 11/30/2022] Open
Abstract
Hereditary motor neuropathies (HMN) were first defined as a group of neuromuscular disorders characterized by lower motor neuron dysfunction, slowly progressive length-dependent distal muscle weakness and atrophy, without sensory involvement. Their cumulative estimated prevalence is 2.14/100 000 and, to date, around 30 causative genes have been identified with autosomal dominant, recessive,and X-linked inheritance. Despite the advances of next generation sequencing, more than 60% of patients with HMN remain genetically uncharacterized. Of note, we are increasingly aware of the broad range of phenotypes caused by pathogenic variants in the same gene and of the considerable clinical and genetic overlap between HMN and other conditions, such as Charcot-Marie-Tooth type 2 (axonal), spinal muscular atrophy with lower extremities predominance, neurogenic arthrogryposis multiplex congenita and juvenile amyotrophic lateral sclerosis. Considering that most HMN present during childhood, in this review we primarily aim to summarize key clinical features of paediatric forms, including recent data on novel phenotypes, to help guide differential diagnosis and genetic testing. Second, we describe newly identified causative genes and molecular mechanisms, and discuss how the discovery of these is changing the paradigm through which we approach this group of conditions.
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Affiliation(s)
- Alberto A Zambon
- Correspondence to: Alberto A. Zambon Neuromuscular Repair Unit InSpe and Division of Neuroscience IRCCS Ospedale San Raffaele, Milan, Italy E-mail:
| | - Veronica Pini
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health and Great Ormond Street Hospital, London, WC1N 1EH, UK
| | - Luca Bosco
- Neuromuscular Repair Unit, Institute of Experimental Neurology (InSpe), Division of Neuroscience, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Yuri M Falzone
- Neuromuscular Repair Unit, Institute of Experimental Neurology (InSpe), Division of Neuroscience, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
| | - Pinki Munot
- NIHR Great Ormond Street Hospital Biomedical Research Centre, London, WC1N 1EH, UK
| | - Francesco Muntoni
- Dubowitz Neuromuscular Centre, UCL Great Ormond Street Institute of Child Health and Great Ormond Street Hospital, London, WC1N 1EH, UK,NIHR Great Ormond Street Hospital Biomedical Research Centre, London, WC1N 1EH, UK
| | - Stefano C Previtali
- Neuromuscular Repair Unit, Institute of Experimental Neurology (InSpe), Division of Neuroscience, IRCCS Ospedale San Raffaele, 20132 Milan, Italy
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Tekin HG, Edem P, Özyılmaz B. Spinal muscular atrophy with predominant lower extremity ( SMA-LED) with no signs other than pure motor symptoms at the intersection of multiple overlap syndrome. Brain Dev 2022; 44:294-8. [PMID: 34974950 DOI: 10.1016/j.braindev.2021.12.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Revised: 12/06/2021] [Accepted: 12/08/2021] [Indexed: 11/22/2022]
Abstract
BACKGROUND Mutations in the cytoplasmic dynein 1 heavy chain gene (DYNC1H1) have been associated with spinal muscular atrophy with predominant lower extremity involvement (SMA-LED), Charcot-Marie-Tooth 2O (CMT2O) disease, cortical migration anomalies, and autosomal dominant mental retardation13. SMA-LED phenotype-related mutation was found in the DYNC1H1 gene in the patient who applied with the complaint of gait disturbance. METHODS Pathogenic heterozygous c.1678G > A (p.Val560Met) mutation was detected in the DYNC1H1 gene by next-generation targeted gene analysis in the patient who had no phenotypic findings except delayed motor milestones, lumbar lordosis, and lower extremity muscle weakness. The patient's creatinine phosphokinase enzyme level and brain magnetic resonance imaging (MRI) were normal. Electromyography (EMG) had pure motor findings. CONCLUSION It should be kept in mind that DYNC1H1 mutation, which we are accustomed to seeing with accompanying findings such as orthopedic and ocular dysmorphic findings, sensorineural EMG findings, and intellectual disability, can also observe with pure motor findings such as muscular dystrophy examination findings.
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Astrea G, Battini R, Lenzi S, Frosini S, Bonetti S, Moretti E, Perazza S, Santorelli FM, Pecini C. Learning disabilities in neuromuscular disorders: a springboard for adult life. Acta Myol 2016; 35:90-95. [PMID: 28344438 PMCID: PMC5343745] [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] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Although the presence of cognitive deficits in Duchenne muscular dystrophy or myotonic dystrophy DM1 is well established in view of brain-specific expression of affected muscle proteins, in other neuromuscular disorders, such as congenital myopathies and limb-girdle muscular dystrophies, cognitive profiles are poorly defined. Also, there are limited characterization of the cognitive profile of children with congenital muscular dystrophies, notwithstanding the presence of cerebral abnormality in some forms, and in spinal muscular atrophies, with the exception of distal spinal muscular atrophy (such as the DYN1CH1- associated form). Starting from the Duchenne muscular dystrophy, which may be considered a kind of paradigm for the co-occurrence of learning disabilities in the contest of a progressive muscular involvement, the findings of neuropsychological (or cognitive) dysfunctions in several forms of neuromuscular diseases will be examined and reviewed.
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Affiliation(s)
- Guja Astrea
- Departmet of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa;,Address for correspondence: Guja Astrea, IRCCS Stella Maris, via dei giacinti 2, 56128 Calambrone (PI). E-mail:
| | - Roberta Battini
- Departmet of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa
| | - Sara Lenzi
- Departmet of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa
| | - Silvia Frosini
- Departmet of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa
| | - Silvia Bonetti
- Departmet of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa
| | - Elena Moretti
- Departmet of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa
| | - Silvia Perazza
- Departmet of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa
| | | | - Chiara Pecini
- Departmet of Developmental Neuroscience, IRCCS Fondazione Stella Maris, Pisa
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Peeters K, Bervoets S, Chamova T, Litvinenko I, De Vriendt E, Bichev S, Kancheva D, Mitev V, Kennerson M, Timmerman V, De Jonghe P, Tournev I, MacMillan J, Jordanova A. Novel mutations in the DYNC1H1 tail domain refine the genetic and clinical spectrum of dyneinopathies. Hum Mutat 2015; 36:287-91. [PMID: 25512093 DOI: 10.1002/humu.22744] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [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: 07/15/2014] [Accepted: 12/02/2014] [Indexed: 12/23/2022]
Abstract
The heavy chain 1 of cytoplasmic dynein (DYNC1H1) is responsible for movement of the motor complex along microtubules and recruitment of dynein components. Mutations in DYNC1H1 are associated with spinal muscular atrophy (SMA), hereditary motor and sensory neuropathy (HMSN), cortical malformations, or a combination of these. Combining linkage analysis and whole-exome sequencing, we identified a novel dominant defect in the DYNC1H1 tail domain (c.1792C>T, p.Arg598Cys) causing axonal HMSN. Mutation analysis of the tail region in 355 patients identified a de novo mutation (c.791G>T, p.Arg264Leu) in an isolated SMA patient. Her phenotype was more severe than previously described, characterized by multiple congenital contractures and delayed motor milestones, without brain malformations. The mutations in DYNC1H1 increase the interaction with its adaptor BICD2. This relates to previous studies on BICD2 mutations causing a highly similar phenotype. Our findings broaden the genetic heterogeneity and refine the clinical spectrum of DYNC1H1, and have implications for molecular diagnostics of motor neuron diseases.
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Affiliation(s)
- Kristien Peeters
- Molecular Neurogenomics Group, Department of Molecular Genetics, VIB, Antwerp, Belgium; Neurogenetics Laboratory, Institute Born-Bunge, University of Antwerp, Antwerp, Belgium
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Punetha J, Monges S, Franchi ME, Hoffman EP, Cirak S, Tesi-Rocha C. Exome Sequencing Identifies DYNC1H1 Variant Associated With Vertebral Abnormality and Spinal Muscular Atrophy With Lower Extremity Predominance. Pediatr Neurol 2015; 52:239-44. [PMID: 25484024 PMCID: PMC4351714 DOI: 10.1016/j.pediatrneurol.2014.09.003] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Revised: 09/01/2014] [Accepted: 09/02/2014] [Indexed: 01/05/2023]
Abstract
BACKGROUND Molecular diagnosis of the distal spinal muscular atrophies or distal hereditary motor neuropathies remains challenging because of clinical and genetic heterogeneity. Next generation sequencing offers potential for identifying de novo mutations of causative genes in isolated cases. PATIENT DESCRIPTION We present a 3.6-year-old girl with congenital scoliosis, equinovarus, and L5/S1 left hemivertebra who demonstrated delayed walking and lower extremities atrophy. She was negative for SMN1 deletion testing, and parents show no sign of disease. RESULTS Whole exome sequencing of the affected girl showed a novel de novo heterozygous missense mutation c.1792C>T (p.Arg598Cys) in the tail domain of the DYNC1H1 gene encoding for cytoplasmic dynein heavy chain 1. The mutation changed a highly conserved amino acid and was absent from both parents. CONCLUSION De novo mutations of DYNC1H1 have been found in individuals with autosomal dominant mental retardation with neuronal migration defects. Dominantly inherited mutations of DYNC1H1 have been reported to cause spinal muscular atrophy with predominance of lower extremity involvement and Charcot-Marie-Tooth type 2O. This is the first report of a de novoDYNC1H1 mutation associated with the spinal muscular atrophy with predominance of lower extremity phenotype with a spinal deformity (lumbar hemivertebrae). This case also demonstrates the power of next generation sequencing to discover de novo mutations on a genome-wide scale.
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Affiliation(s)
- Jaya Punetha
- Department of Integrative Systems Biology, The George Washington University School of Medicine, Washington DC, USA,Center for Genetic Medicine Research, Children’s National Medical Center, Washington DC, USA
| | - Soledad Monges
- Hospital Nacional de Pediatria “J. P. Garrahan”, Buenos Aires, Argentina
| | | | - Eric P Hoffman
- Department of Integrative Systems Biology, The George Washington University School of Medicine, Washington DC, USA,Center for Genetic Medicine Research, Children’s National Medical Center, Washington DC, USA
| | - Sebahattin Cirak
- Center for Genetic Medicine Research, Children’s National Medical Center, Washington DC, USA
| | - Carolina Tesi-Rocha
- Center for Genetic Medicine Research, Children's National Medical Center, Washington, DC; Department of Neurology and Neurological Sciences, Stanford University Medical Center, Palo Alto, California.
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Fiorillo C, Moro F, Yi J, Weil S, Brisca G, Astrea G, Severino M, Romano A, Battini R, Rossi A, Minetti C, Bruno C, Santorelli FM, Vallee R. Novel dynein DYNC1H1 neck and motor domain mutations link distal spinal muscular atrophy and abnormal cortical development. Hum Mutat 2014; 35:298-302. [PMID: 24307404 DOI: 10.1002/humu.22491] [Citation(s) in RCA: 68] [Impact Index Per Article: 6.8] [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: 06/12/2013] [Accepted: 11/22/2013] [Indexed: 11/10/2022]
Abstract
DYNC1H1 encodes the heavy chain of cytoplasmic dynein 1, a motor protein complex implicated in retrograde axonal transport, neuronal migration, and other intracellular motility functions. Mutations in DYNC1H1 have been described in autosomal-dominant Charcot-Marie-Tooth type 2 and in families with distal spinal muscular atrophy (SMA) predominantly affecting the legs (SMA-LED). Recently, defects of cytoplasmic dynein 1 were also associated with a form of mental retardation and neuronal migration disorders. Here, we describe two unrelated patients presenting a combined phenotype of congenital motor neuron disease associated with focal areas of cortical malformation. In each patient, we identified a novel de novo mutation in DYNC1H1: c.3581A>G (p.Gln1194Arg) in one case and c.9142G>A (p.Glu3048Lys) in the other. The mutations lie in different domains of the dynein heavy chain, and are deleterious to protein function as indicated by assays for Golgi recovery after nocodazole washout in patient fibroblasts. Our results expand the set of pathological mutations in DYNC1H1, reinforce the role of cytoplasmic dynein in disorders of neuronal migration, and provide evidence for a syndrome including spinal nerve degeneration and brain developmental problems.
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Affiliation(s)
- Chiara Fiorillo
- Neuromuscular and Molecular Medicine Unit, Department of Developmental Neuroscience, IRCCS Stella Maris, Pisa, Italy
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Wiggins LM. Morphological changes and altered expression of antioxidant proteins in a heterozygous dynein mutant; a mouse model of spinal muscular atrophy. ACTA ACUST UNITED AC 2014; 3:161-173. [PMID: 25866698 DOI: 10.5455/oams.310714.or.071] [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] [Indexed: 11/03/2022]
Abstract
OBJECTIVE There is increased evidence that oxidative stress is involved in exacerbations of neurodegenerative diseases and spinal muscular atrophies. METHODS We examined changes in morphology and expression of antioxidant proteins and peroxiredoxins in motor neurons of lumbar spinal cord, dorsal root ganglion sensory neurons, macroglial cells and quadriceps muscles of newborn heterozygous Loa/+ mice ("legs at odd angles"), a mouse model for early onset of the spinal muscular atrophy with lower extremity predominance (SMA-LED). RESULTS Our data indicate that newborn Loa-mice develop: neuroinflammation of the sensory and motor neurons; muscular inflammation with atrophic and denervated myofibers; increased expression of neuronal mitochondrial peroxiredoxins (Prxs) 3, 5 and cytoplasmic Prx 6 in motor and sensory neurons, myofibers, fibroblasts of perimysium and chondrocytes of cartilage; and decreased expression of Prx 6 by glial cells and in extracellular space surrounding motor neurons. CONCLUSION The decrease in expression of Prx 6 by glial cells and extracellular Prx 6 secretion in early stages of the pathological conditions is consistent with the hypothesis that chronic oxidative stress may lead to neurodegeneration of motor neurons and exacerbation of the pathology.
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Affiliation(s)
- Larisa M Wiggins
- Department of Physiology and Cell Biology, University of Nevada, Reno
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