1
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Ratié L, Humbert S. A developmental component to Huntington's disease. Rev Neurol (Paris) 2024:S0035-3787(24)00487-9. [PMID: 38614929 DOI: 10.1016/j.neurol.2024.04.001] [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: 02/19/2024] [Accepted: 04/02/2024] [Indexed: 04/15/2024]
Abstract
Huntington's disease is a dominantly inherited disorder characterized by the dysfunction and death of cortical and striatal neurons. Striatal degeneration in Huntington's disease is due, at least in part, to defective cortical signalling to the striatum. Although Huntington's disease generally manifests at the adult stage, mouse and neuroimaging studies of presymptomatic mutation carriers suggest that it may affect neurodevelopment. In support of this notion, the development of the cortex is altered in mice with Huntington's disease and the foetuses of human Huntington's disease gene carriers. We will discuss these studies and the contribution of abnormal brain development to the later appearance of the disease.
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Affiliation(s)
- L Ratié
- U1216, CEA, Grenoble Institute Neurosciences, Inserm, université Grenoble Alpes, 38000 Grenoble, France
| | - S Humbert
- Institut du Cerveau-Paris Brain Institute, Inserm, CNRS, Hôpital Pitié-Salpêtrière, Sorbonne Université, Paris, France.
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2
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Plutino S, Laghouati E, Jarre G, Depaulis A, Guillemain I, Bureau I. Barrel cortex development lacks a key stage of hyperconnectivity from deep to superficial layers in a rat model of Absence Epilepsy. Prog Neurobiol 2024; 234:102564. [PMID: 38244975 DOI: 10.1016/j.pneurobio.2023.102564] [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: 07/21/2023] [Revised: 12/04/2023] [Accepted: 12/30/2023] [Indexed: 01/22/2024]
Abstract
During development of the sensory cortex, the ascending innervation from deep to upper layers provides a temporary scaffold for the construction of other circuits that remain at adulthood. Whether an alteration in this sequence leads to brain dysfunction in neuro-developmental diseases remains unknown. Using functional approaches in a genetic model of Absence Epilepsy (GAERS), we investigated in barrel cortex, the site of seizure initiation, the maturation of excitatory and inhibitory innervations onto layer 2/3 pyramidal neurons and cell organization into neuronal assemblies. We found that cortical development in GAERS lacks the early surge of connections originating from deep layers observed at the end of the second postnatal week in normal rats and the concomitant structuring into multiple assemblies. Later on, at seizure onset (1 month old), excitatory neurons are hyper-excitable in GAERS when compared to Wistar rats. These findings suggest that early defects in the development of connectivity could promote this typical epileptic feature and/or its comorbidities.
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Affiliation(s)
| | - Emel Laghouati
- Univ. Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, 38000 Grenoble, France
| | - Guillaume Jarre
- Univ. Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, 38000 Grenoble, France
| | - Antoine Depaulis
- Univ. Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, 38000 Grenoble, France
| | - Isabelle Guillemain
- Univ. Grenoble Alpes, Inserm, U1216, Grenoble Institut Neurosciences, 38000 Grenoble, France
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3
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Dehay C, Huttner WB. Development and evolution of the primate neocortex from a progenitor cell perspective. Development 2024; 151:dev199797. [PMID: 38369736 DOI: 10.1242/dev.199797] [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] [Indexed: 02/20/2024]
Abstract
The generation of neurons in the developing neocortex is a major determinant of neocortex size. Crucially, the increase in cortical neuron numbers in the primate lineage, notably in the upper-layer neurons, contributes to increased cognitive abilities. Here, we review major evolutionary changes affecting the apical progenitors in the ventricular zone and focus on the key germinal zone constituting the foundation of neocortical neurogenesis in primates, the outer subventricular zone (OSVZ). We summarize characteristic features of the OSVZ and its key stem cell type, the basal (or outer) radial glia. Next, we concentrate on primate-specific and human-specific genes, expressed in OSVZ-progenitors, the ability of which to amplify these progenitors by targeting the regulation of the cell cycle ultimately underlies the evolutionary increase in upper-layer neurons. Finally, we address likely differences in neocortical development between present-day humans and Neanderthals that are based on human-specific amino acid substitutions in proteins operating in cortical progenitors.
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Affiliation(s)
- Colette Dehay
- Université Claude Bernard Lyon 1, Inserm, Stem Cell and Brain Research Institute U1208, F-69500 Bron, France
| | - Wieland B Huttner
- Max Planck Institute of Molecular Cell Biology and Genetics, Pfotenhauerstrasse 108, 01307 Dresden, Germany
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4
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Slušná D, Kohli JS, Hau J, Álvarez-Linera Prado J, Linke AC, Hinzen W. Functional dysregulation of the auditory cortex in bilateral perisylvian polymicrogyria: Multiparametric case analysis of the absent speech phenotype. Cortex 2024; 171:423-434. [PMID: 38109835 DOI: 10.1016/j.cortex.2023.11.006] [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: 06/20/2023] [Revised: 10/23/2023] [Accepted: 11/02/2023] [Indexed: 12/20/2023]
Abstract
The absence of speech is a clinical phenotype seen across neurodevelopmental syndromes, offering insights for neural language models. We present a case of bilateral perisylvian polymicrogyria (BPP) and complete absence of speech with considerable language comprehension and production difficulties. We extensively characterized the auditory speech perception and production circuitry by employing a multimodal neuroimaging approach. Results showed extensive cortical thickening in motor and auditory-language regions. The auditory cortex lacked sensitivity to speech stimuli despite relatively preserved thalamic projections yet had no intrinsic functional organization. Subcortical structures implicated in early stages of processing exhibited heightened sensitivity to speech. The arcuate fasciculus, a suggested marker of language in BPP, showed similar volume and integrity to a healthy control. The frontal aslant tract, linked to oromotor function, was partially reconstructed. These findings highlight the importance of assessing the auditory cortex beyond speech production structures to understand absent speech in BPP. Despite profound cortical alterations, the intrinsic motor network and motor-speech pathways remained largely intact. This case underscores the need for comprehensive phenotyping using multiple MRI modalities to uncover causes of severe disruption in language development.
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Affiliation(s)
- Dominika Slušná
- Department of Translation and Language Sciences, Campus Poblenou, Pompeu Fabra University, Barcelona, Spain.
| | - Jiwandeep S Kohli
- Brain Development Imaging Laboratories, Department of Psychology, San Diego State University, San Diego, CA, USA
| | - Janice Hau
- Brain Development Imaging Laboratories, Department of Psychology, San Diego State University, San Diego, CA, USA
| | | | - Annika C Linke
- Brain Development Imaging Laboratories, Department of Psychology, San Diego State University, San Diego, CA, USA
| | - Wolfram Hinzen
- Department of Translation and Language Sciences, Campus Poblenou, Pompeu Fabra University, Barcelona, Spain; Institució Catalana de Recerca I Estudis Avancats, ICREA, Barcelona, Spain
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Tsai MH, Lin WC, Chen SY, Hsieh MY, Nian FS, Cheng HY, Zhao HJ, Hung SS, Hsu CH, Hou PS, Tung CY, Lee MH, Tsai JW. A lissencephaly-associated BAIAP2 variant causes defects in neuronal migration during brain development. Development 2024; 151:dev201912. [PMID: 38149472 DOI: 10.1242/dev.201912] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [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: 04/26/2023] [Accepted: 12/12/2023] [Indexed: 12/28/2023]
Abstract
Lissencephaly is a neurodevelopmental disorder characterized by a loss of brain surface convolutions caused by genetic variants that disrupt neuronal migration. However, the genetic origins of the disorder remain unidentified in nearly one-fifth of people with lissencephaly. Using whole-exome sequencing, we identified a de novo BAIAP2 variant, p.Arg29Trp, in an individual with lissencephaly with a posterior more severe than anterior (P>A) gradient, implicating BAIAP2 as a potential lissencephaly gene. Spatial transcriptome analysis in the developing mouse cortex revealed that Baiap2 is expressed in the cortical plate and intermediate zone in an anterior low to posterior high gradient. We next used in utero electroporation to explore the effects of the Baiap2 variant in the developing mouse cortex. We found that Baiap2 knockdown caused abnormalities in neuronal migration, morphogenesis and differentiation. Expression of the p.Arg29Trp variant failed to rescue the migration defect, suggesting a loss-of-function effect. Mechanistically, the variant interfered with the ability of BAIAP2 to localize to the cell membrane. These results suggest that the functions of BAIAP2 in the cytoskeleton, cell morphogenesis and migration are important for cortical development and for the pathogenesis of lissencephaly in humans.
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Affiliation(s)
- Meng-Han Tsai
- Department of Neurology & Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
- School of Medicine, Chang Gung University, Taoyuan 333, Taiwan
| | - Wan-Cian Lin
- Institute of Brain Science, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Faculty of Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Shih-Ying Chen
- Department of Neurology & Department of Medical Research, Kaohsiung Chang Gung Memorial Hospital, Kaohsiung 833, Taiwan
| | - Meng-Ying Hsieh
- Division of Pediatric Neurology, Department of Pediatrics, Chang Gung Memorial Hospital, Taipei 105, Taiwan
| | - Fang-Shin Nian
- Institute of Brain Science, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Institute of Clinical Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Haw-Yuan Cheng
- Institute of Brain Science, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Hong-Jun Zhao
- Institute of Brain Science, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Shih-Shun Hung
- Institute of Anatomy and Cell Biology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Chi-Hsin Hsu
- Genomics Center for Clinical and Biotechnological Applications, Cancer Progression Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Pei-Shan Hou
- Institute of Anatomy and Cell Biology, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Chien-Yi Tung
- Genomics Center for Clinical and Biotechnological Applications, Cancer Progression Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Mei-Hsuan Lee
- Institute of Clinical Medicine, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Advanced Therapeutics Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
| | - Jin-Wu Tsai
- Institute of Brain Science, College of Medicine, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Advanced Therapeutics Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Brain Research Center, National Yang Ming Chiao Tung University, Taipei 112, Taiwan
- Department of Biological Science and Technology, College of Biological Science and Technology, National Yang Ming Chiao Tung University, Hsinchu 300, Taiwan
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6
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Scala M, Severino M. CT Scan Data Analysis in Malformations of Cortical Development. Methods Mol Biol 2024; 2794:271-280. [PMID: 38630236 DOI: 10.1007/978-1-0716-3810-1_22] [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] [Indexed: 04/19/2024]
Abstract
Malformations of cortical development (MCDs) are a diverse group of disorders that result from abnormal neuronal migration, proliferation, and differentiation during brain development. Head computed tomography (CT) has limited use in the diagnosis of MCDs and should be reserved for selected cases with specific indications or when magnetic resonance imaging is not available or contraindicated. CT can detect brain calcifications associated with MCDs, thus helping in the differential diagnosis between acquired and genetic MCDs or in the identification of different genetic patterns. Moreover, CT can provide high-resolution images of the skull and bones, thus identifying associated malformations, such as craniosynostosis, inner and middle ear malformations, and vertebral anomalies. In this chapter, we review the CT scan technique, data analysis, and indications in the investigation of MCDs.
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Affiliation(s)
- Marcello Scala
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy
- UOC Genetica Medica, IRCCS Giannina Gaslini, Genoa, Italy
| | - Mariasavina Severino
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy
- Neuroradiology Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
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Massri AJ, Fitzpatrick M, Cunny H, Li JL, Harry GJ. Differential gene expression profiling implicates altered network development in rat postnatal day 4 cortex following 4-Methylimidazole (4-MeI) induced maternal seizures. Neurotoxicol Teratol 2023; 100:107301. [PMID: 37783441 PMCID: PMC10843020 DOI: 10.1016/j.ntt.2023.107301] [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: 06/23/2023] [Revised: 08/31/2023] [Accepted: 09/19/2023] [Indexed: 10/04/2023]
Abstract
Compromised maternal health leading to maternal seizures can have adverse effects on the healthy development of offspring. This may be the result of inflammation, hypoxia-ischemia, and altered GABA signaling. The current study examined cortical tissue from F2b (2nd litter of the 2nd generation) postnatal day 4 (PND4) offspring of female Harlan SD rats chronically exposed to the seizuregenic compound, 4-Methylimidazole (0, 750, or 2500 ppm 4-MeI). Maternal seizures were evident only at 2500 ppm 4-MeI. GABA related gene expression as examined by qRT-PCR and whole genome microarray showed no indication of disrupted GABA or glutamatergic signaling. Canonical pathway hierarchical clustering and multi-omics combinatory genomic (CNet) plots of differentially expressed genes (DEG) showed alterations in genes associated with regulatory processes of cell development including neuronal differentiation and synaptogenesis. Functional enrichment analysis showed a similarity of cellular processes across the two exposure groups however, the genes comprising each cluster were primarily unique rather than shared and often showed different directionality. A dose-related induction of cytokine signaling was indicated however, pathways associated with individual cytokine signaling were not elevated, suggesting an alternative involvement of cytokine signaling. Pathways related to growth process and cell signaling showed a negative activation supporting an interpretation of disruption or delay in developmental processes at the 2500 ppm 4-MeI exposure level with maternal seizures. Thus, while GABA signaling was not altered as has been observed with maternal seizures, the pattern of DEG suggested a potential for alteration in neuronal network formation.
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Affiliation(s)
- Abdull J Massri
- Integrative Bioinformatics, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T. W. Alexander Drive, Research Triangle Park, NC 27709, USA
| | - Mackenzie Fitzpatrick
- Mechanistic Toxicology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T. W. Alexander Drive, Research Triangle Park, NC 27709, USA
| | - Helen Cunny
- Office of the Scientific Director, Division of Translational Toxicology, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T. W. Alexander Drive, Research Triangle Park, NC 27709, USA
| | - Jian-Liang Li
- Integrative Bioinformatics, Division of Intramural Research, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T. W. Alexander Drive, Research Triangle Park, NC 27709, USA
| | - G Jean Harry
- Mechanistic Toxicology Branch, National Institute of Environmental Health Sciences, National Institutes of Health, 111 T. W. Alexander Drive, Research Triangle Park, NC 27709, USA.
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8
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Suryanarayana SM, Huilgol D. Conservation and Diversification of Pallial Cell Types across Vertebrates: An Evo-Devo Perspective. Brain Behav Evol 2023; 98:210-228. [PMID: 37379819 DOI: 10.1159/000531718] [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] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 06/17/2023] [Indexed: 06/30/2023]
Abstract
As the highest center of sensory processing, initiation, and modulation of behavior, the pallium has seen prominent changes during the course of vertebrate evolution, culminating in the emergence of the mammalian isocortex. The processes underlying this remarkable evolution have been a matter of debate for several centuries. Recent studies using modern techniques in a host of vertebrate species are beginning to reveal mechanistic principles underlying pallial evolution from the developmental, connectome, transcriptome and cell type levels. We attempt here to trace and reconstruct the evolution of pallium from an evo-devo perspective, focusing on two phylogenetic extremes in vertebrates - cyclostomes and mammals, while considering data from intercalated species. We conclude that two fundamental processes of evolutionary change - conservation and diversification of cell types, driven by functional demands, are the primary forces dictating the emergence of the diversity of pallial structures and imbibing them with the ability to mediate and control the exceptional variety of motor behaviors across vertebrates.
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Affiliation(s)
- Shreyas M Suryanarayana
- Department of Neurobiology, Duke University Medical Center, Durham, North Carolina, USA
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | - Dhananjay Huilgol
- Department of Neurobiology, Duke University Medical Center, Durham, North Carolina, USA
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Han JS, Fishman-Williams E, Decker SC, Hino K, Reyes RV, Brown NL, Simó S, La Torre A. Notch directs telencephalic development and controls neocortical neuron fate determination by regulating microRNA levels. Development 2023:310085. [PMID: 37170916 DOI: 10.1242/dev.201408] [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] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 04/28/2023] [Indexed: 05/13/2023]
Abstract
The central nervous system (CNS) contains myriads of different cell types produced from multipotent neural progenitors. Neural progenitors acquire distinct cell identities depending on their spatial position, but they are also influenced by temporal cues to give rise to different cell populations over time. For instance, the progenitors of the cerebral neocortex generate different populations of excitatory projection neurons following a well-known sequence. The Notch signaling pathway plays crucial roles during this process but the molecular mechanisms by which Notch impacts progenitor fate decisions have not been fully resolved. Here, we show that Notch signaling is essential for neocortical and hippocampal morphogenesis, and for the development of the corpus callosum and choroid plexus. Our data also indicate that in the neocortex, Notch controls projection neuron fate determination through the regulation of two microRNA (miRNA) clusters that include let-7, miR-99a/100, and miR-125b. Our findings collectively suggest that balanced Notch signaling is crucial for telencephalic development and that the interplay between Notch and miRNAs is critical to control neocortical progenitor behaviors and neuron cell fate decisions.
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Affiliation(s)
- Jisoo S Han
- Department of Cell Biology and Human Anatomy, University of California Davis, Davis, 95616, USA
| | | | - Steven C Decker
- Department of Cell Biology and Human Anatomy, University of California Davis, Davis, 95616, USA
| | - Keiko Hino
- Department of Cell Biology and Human Anatomy, University of California Davis, Davis, 95616, USA
| | - Raenier V Reyes
- Department of Cell Biology and Human Anatomy, University of California Davis, Davis, 95616, USA
| | - Nadean L Brown
- Department of Cell Biology and Human Anatomy, University of California Davis, Davis, 95616, USA
| | - Sergi Simó
- Department of Cell Biology and Human Anatomy, University of California Davis, Davis, 95616, USA
| | - Anna La Torre
- Department of Cell Biology and Human Anatomy, University of California Davis, Davis, 95616, USA
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Gerasimenko A, Baldassari S, Baulac S. mTOR pathway: Insights into an established pathway for brain mosaicism in epilepsy. Neurobiol Dis 2023; 182:106144. [PMID: 37149062 DOI: 10.1016/j.nbd.2023.106144] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [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: 03/12/2023] [Revised: 05/02/2023] [Accepted: 05/03/2023] [Indexed: 05/08/2023] Open
Abstract
The mechanistic target of rapamycin (mTOR) signaling pathway is an essential regulator of numerous cellular activities such as metabolism, growth, proliferation, and survival. The mTOR cascade recently emerged as a critical player in the pathogenesis of focal epilepsies and cortical malformations. The 'mTORopathies' comprise a spectrum of cortical malformations that range from whole brain (megalencephaly) and hemispheric (hemimegalencephaly) abnormalities to focal abnormalities, such as focal cortical dysplasia type II (FCDII), which manifest with drug-resistant epilepsies. The spectrum of cortical dysplasia results from somatic brain mutations in the mTOR pathway activators AKT3, MTOR, PIK3CA, and RHEB and from germline and somatic mutations in mTOR pathway repressors, DEPDC5, NPRL2, NPRL3, TSC1 and TSC2. The mTORopathies are characterized by excessive mTOR pathway activation, leading to a broad range of structural and functional impairments. Here, we provide a comprehensive literature review of somatic mTOR-activating mutations linked to epilepsy and cortical malformations in 292 patients and discuss the perspectives of targeted therapeutics for personalized medicine.
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Affiliation(s)
- Anna Gerasimenko
- Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Inserm, CNRS, Hôpital de la Pitié Salpêtrière, 75013 Paris, France; APHP Sorbonne Université, GH Pitié Salpêtrière et Trousseau, Département de Génétique, Centre de référence "déficiences intellectuelles de causes rares", Paris, France
| | - Sara Baldassari
- Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Inserm, CNRS, Hôpital de la Pitié Salpêtrière, 75013 Paris, France
| | - Stéphanie Baulac
- Sorbonne Université, Institut du Cerveau - Paris Brain Institute - ICM, Inserm, CNRS, Hôpital de la Pitié Salpêtrière, 75013 Paris, France.
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11
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Yang L, Zou J, Zang Z, Wang L, Du Z, Zhang D, Cai Y, Li M, Li Q, Gao J, Xu H, Fan X. Di-(2-ethylhexyl) phthalate exposure impairs cortical development in hESC-derived cerebral organoids. Sci Total Environ 2023; 865:161251. [PMID: 36587670 DOI: 10.1016/j.scitotenv.2022.161251] [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] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/24/2022] [Accepted: 12/24/2022] [Indexed: 06/17/2023]
Abstract
Di-(2-ethylhexyl) phthalate (DEHP), a ubiquitous environmental endocrine disruptor, is widely used in consumer products. Increasing evidence implies that DEHP influences the early development of the human brain. However, it lacks a suitable model to evaluate the neurotoxicity of DEHP. Using an established human cerebral organoid model, which reproduces the morphogenesis of the human cerebral cortex at the early stage, we demonstrated that DEHP exposure markedly suppressed cell proliferation and increased apoptosis, thus impairing the morphogenesis of the human cerebral cortex. It showed that DEHP exposure disrupted neurogenesis and neural progenitor migration, confirmed by scratch assay and cell migration assay in vitro. These effects might result from DEHP-induced dysplasia of the radial glia cells (RGs), the fibers of which provide the scaffolds for cell migration. RNA sequencing (RNA-seq) analysis of human cerebral organoids showed that DEHP-induced disorder in cell-extracellular matrix (ECM) interactions might play a pivotal role in the neurogenesis of human cerebral organoids. The present study provides direct evidence of the neurodevelopmental toxicity of DEHP after prenatal exposure.
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Affiliation(s)
- Ling Yang
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing 40038, China; Department of Physiology, College of Basic Medical Sciences, Third Military Medical University (Army Medical University), Chongqing 400038, China; Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Jiao Zou
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing 40038, China
| | - Zhenle Zang
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing 40038, China
| | - Liuyongwei Wang
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing 40038, China
| | - Zhulin Du
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing 40038, China
| | - Dandan Zhang
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing 40038, China
| | - Yun Cai
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing 40038, China
| | - Minghui Li
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Qiyou Li
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China
| | - Junwei Gao
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing 40038, China.
| | - Haiwei Xu
- Southwest Hospital/Southwest Eye Hospital, Third Military Medical University (Army Medical University), Chongqing 400038, China; Key Lab of Visual Damage and Regeneration & Restoration of Chongqing, Chongqing 400038, China.
| | - Xiaotang Fan
- Department of Military Cognitive Psychology, School of Psychology, Third Military Medical University (Army Medical University), Chongqing 40038, China.
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12
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Jiang T, Yang Y, Wu C, Qu C, Chen JG, Cao H. MicroRNA-218 regulates neuronal radial migration and morphogenesis by targeting Satb2 in developing neocortex. Biochem Biophys Res Commun 2023; 647:9-15. [PMID: 36708662 DOI: 10.1016/j.bbrc.2023.01.053] [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: 01/04/2023] [Accepted: 01/18/2023] [Indexed: 01/24/2023]
Abstract
Neuronal migration and morphogenesis are fundamental processes for cortical development. Their defects may cause abnormities in neural circuit formation and even neuropsychiatric disorders. Many proteins, especially layer-specific transcription factors and adhesion molecules, have been reported to regulate the processes. However, the involvement of non-coding RNAs in cortical development has not been extensively studied. Here, we identified microRNA-218 (miR-218) as a layer V-specific microRNA in mouse brains. Expression of miR-218 was elevated in patients with autism spectrum disorder (ASD) and schizophrenia. We found in this study that miR-218 overexpression in developing mouse cortex led to severe defects in radial migration, morphogenesis, and spatial distribution of the cortical neurons. Moreover, we identified Satb2, an upper-layer marker, as a molecular target repressed by miR-218. These results suggest an underlying mechanism of miR-218 involvement in neuropsychiatric disorders, and the interactions of layer-specific non-coding RNAs and proteins in regulating cortical development.
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Affiliation(s)
- Tian Jiang
- Department of Clinical Laboratory, The Affiliated Wenling Hospital, Wenzhou Medical University, Wenling, 317500, PR China; School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, State Key Laboratory of Optometry, Ophthalmology and Vision Science, and Zhejiang Provincial Key Laboratory of Optometry and Ophthalmology, 270 Xueyuan Road, Wenzhou, Zhejiang, 325027, PR China
| | - Yaojuan Yang
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, State Key Laboratory of Optometry, Ophthalmology and Vision Science, and Zhejiang Provincial Key Laboratory of Optometry and Ophthalmology, 270 Xueyuan Road, Wenzhou, Zhejiang, 325027, PR China
| | - Chunping Wu
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, State Key Laboratory of Optometry, Ophthalmology and Vision Science, and Zhejiang Provincial Key Laboratory of Optometry and Ophthalmology, 270 Xueyuan Road, Wenzhou, Zhejiang, 325027, PR China
| | - Chunsheng Qu
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, State Key Laboratory of Optometry, Ophthalmology and Vision Science, and Zhejiang Provincial Key Laboratory of Optometry and Ophthalmology, 270 Xueyuan Road, Wenzhou, Zhejiang, 325027, PR China
| | - Jie-Guang Chen
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, State Key Laboratory of Optometry, Ophthalmology and Vision Science, and Zhejiang Provincial Key Laboratory of Optometry and Ophthalmology, 270 Xueyuan Road, Wenzhou, Zhejiang, 325027, PR China.
| | - Huateng Cao
- School of Ophthalmology and Optometry and Eye Hospital, Wenzhou Medical University, State Key Laboratory of Optometry, Ophthalmology and Vision Science, and Zhejiang Provincial Key Laboratory of Optometry and Ophthalmology, 270 Xueyuan Road, Wenzhou, Zhejiang, 325027, PR China.
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13
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Cardo LF, de la Fuente DC, Li M. Impaired neurogenesis and neural progenitor fate choice in a human stem cell model of SETBP1 disorder. Mol Autism 2023; 14:8. [PMID: 36805818 PMCID: PMC9940404 DOI: 10.1186/s13229-023-00540-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Accepted: 02/07/2023] [Indexed: 02/22/2023] Open
Abstract
BACKGROUND Disruptions of SETBP1 (SET binding protein 1) on 18q12.3 by heterozygous gene deletion or loss-of-function variants cause SETBP1 disorder. Clinical features are frequently associated with moderate to severe intellectual disability, autistic traits and speech and motor delays. Despite the association of SETBP1 with neurodevelopmental disorders, little is known about its role in brain development. METHODS Using CRISPR/Cas9 genome editing technology, we generated a SETBP1 deletion model in human embryonic stem cells (hESCs) and examined the effects of SETBP1-deficiency in neural progenitors (NPCs) and neurons derived from these stem cells using a battery of cellular assays, genome-wide transcriptomic profiling and drug-based phenotypic rescue. RESULTS Neural induction occurred efficiently in all SETBP1 deletion models as indicated by uniform transition into neural rosettes. However, SETBP1-deficient NPCs exhibited an extended proliferative window and a decrease in neurogenesis coupled with a deficiency in their ability to acquire ventral forebrain fate. Genome-wide transcriptome profiling and protein biochemical analysis revealed enhanced activation of Wnt/β-catenin signaling in SETBP1 deleted cells. Crucially, treatment of the SETBP1-deficient NPCs with a small molecule Wnt inhibitor XAV939 restored hyper canonical β-catenin activity and restored both cortical and MGE neuronal differentiation. LIMITATIONS The current study is based on analysis of isogenic hESC lines with genome-edited SETBP1 deletion and further studies would benefit from the use of patient-derived iPSC lines that may harbor additional genetic risk that aggravate brain pathology of SETBP1 disorder. CONCLUSIONS We identified an important role for SETBP1 in controlling forebrain progenitor expansion and neurogenic differentiation. Our study establishes a novel regulatory link between SETBP1 and Wnt/β-catenin signaling during human cortical neurogenesis and provides mechanistic insights into structural abnormalities and potential therapeutic avenues for SETBP1 disorder.
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Affiliation(s)
- Lucia F Cardo
- Neuroscience and Mental Health Innovation Institute, School of Medicine and School of Bioscience, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK.
| | - Daniel C de la Fuente
- Neuroscience and Mental Health Innovation Institute, School of Medicine and School of Bioscience, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK
| | - Meng Li
- Neuroscience and Mental Health Innovation Institute, School of Medicine and School of Bioscience, Cardiff University, Hadyn Ellis Building, Maindy Road, Cardiff, CF24 4HQ, UK.
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14
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Cheng HY, Nian FS, Ou YW, Tsai JW. Assessment of Dynein-Mediated Nuclear Migration in the Developing Cortex by Live-Tissue Microscopy. Methods Mol Biol 2023; 2623:61-71. [PMID: 36602679 DOI: 10.1007/978-1-0716-2958-1_4] [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] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
During development of the cerebral cortex, neuroepithelial and radial glial cells undergo an oscillatory nuclear movement throughout their cell cycle, termed interkinetic nuclear migration. The nucleus of postmitotic neurons derived from these neural stem cells also translocates in a saltatory manner to enable neuronal migration toward the cortical plate. In these processes, various molecular motors, including cytoplasmic dynein, myosin II, and kinesins, are the driving force for nuclear migration at different stages. Despite efforts made to understand the mechanism regulating cortical development over decades, novel gene mutations discovered in neurodevelopmental disorders indicate that missing pieces still remain. Gene manipulation by in utero electroporation combined with live microscopy of neural stem cells in brain slices provides a powerful method to capture their detailed behaviors during proliferation and migration. The procedures described in this chapter enable the monitoring of cell cycle progression, mitosis, morphological changes, and migratory patterns in situ. This approach facilitates the elucidation of gene functions in cortical development and neurodevelopmental disorders.
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15
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Wang W, Yu Q, Liang W, Xu F, Li Z, Tang Y, Liu S. Altered cortical microstructure in preterm infants at term-equivalent age relative to term-born neonates. Cereb Cortex 2023; 33:651-662. [PMID: 35259759 DOI: 10.1093/cercor/bhac091] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [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: 09/15/2021] [Revised: 01/11/2022] [Accepted: 02/08/2022] [Indexed: 02/03/2023] Open
Abstract
Preterm (PT) birth is a potential factor for abnormal brain development. Although various alterations of cortical structure and functional connectivity in preterm infants have been reported, the underlying microstructural foundation is still undetected thoroughly in PT infants relative to full-term (FT) neonates. To detect the very early cortical microstructural alteration noninvasively with advanced neurite orientation dispersion and density imaging (NODDI) on a whole-brain basis, we used multi-shell diffusion MRI of healthy newborns selected from the Developing Human Connectome Project. 73 PT infants and 69 FT neonates scanned at term-equivalent age were included in this study. By extracting the core voxels of gray matter (GM) using GM-based spatial statistics (GBSS), we found that comparing to FT neonates, infants born preterm showed extensive lower neurite density in both primary and higher-order association cortices (FWE corrected, P < 0.025). Higher orientation dispersion was only found in very preterm subgroup in the orbitofrontal cortex, fronto-insular cortex, entorhinal cortex, a portion of posterior cingular gyrus, and medial parieto-occipital cortex. This study provided new insights into exploring structural MR for functional and behavioral variations in preterm population, and these findings may have marked clinical importance, particularly in the guidance of ameliorating the development of premature brain.
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Affiliation(s)
- Wenjun Wang
- Department of Anatomy and Neurobiology, Research Center for Sectional and Imaging Anatomy, Shandong Key Laboratory of Mental Disorders, Shandong Key Laboratory of Digital Human and Clinical Anatomy, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
- Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, Shandong, 250012, China
| | - Qiaowen Yu
- Department of Medical Imaging, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Wenjia Liang
- Department of Anatomy and Neurobiology, Research Center for Sectional and Imaging Anatomy, Shandong Key Laboratory of Mental Disorders, Shandong Key Laboratory of Digital Human and Clinical Anatomy, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
- Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, Shandong, 250012, China
| | - Feifei Xu
- Department of Anatomy and Neurobiology, Research Center for Sectional and Imaging Anatomy, Shandong Key Laboratory of Mental Disorders, Shandong Key Laboratory of Digital Human and Clinical Anatomy, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
- Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, Shandong, 250012, China
| | - Zhuoran Li
- Department of Ultrasound, Shandong Provincial Hospital Affiliated to Shandong First Medical University, Jinan, Shandong, 250021, China
| | - Yuchun Tang
- Department of Anatomy and Neurobiology, Research Center for Sectional and Imaging Anatomy, Shandong Key Laboratory of Mental Disorders, Shandong Key Laboratory of Digital Human and Clinical Anatomy, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
- Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, Shandong, 250012, China
| | - Shuwei Liu
- Department of Anatomy and Neurobiology, Research Center for Sectional and Imaging Anatomy, Shandong Key Laboratory of Mental Disorders, Shandong Key Laboratory of Digital Human and Clinical Anatomy, School of Basic Medical Sciences, Cheeloo College of Medicine, Shandong University, Jinan, Shandong, 250012, China
- Institute of Brain and Brain-Inspired Science, Shandong University, Jinan, Shandong, 250012, China
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16
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Humbert S, Barnat M. Huntington's disease and brain development. C R Biol 2022; 345:77-90. [PMID: 36847466 DOI: 10.5802/crbiol.93] [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] [Subscribe] [Scholar Register] [Received: 10/04/2022] [Accepted: 10/10/2022] [Indexed: 11/06/2022]
Abstract
Huntington's disease is a rare inherited neurological disorder that generally manifests in mild-adulthood. The disease is characterized by the dysfunction and the degeneration of specific brain structures leading progressively to psychiatric, cognitive and motor disorders. The disease is caused by a mutation in the gene coding for huntingtin and, although it appears in adulthood, embryos carry the mutated gene from their development in utero. Studies based on mouse models and human stem cells have reported altered developmental mechanisms in disease conditions. However, does the mutation affect development in humans? Focusing on the early stages of brain development in human fetuses carrying the HD mutation, we have identified abnormalities in the development of the neocortex, the structure that ensure higher cerebral functions. Altogether, these studies suggests that developmental defects could contribute to the onset symptoms in adults, changing the perspective on disease and thus the health care of patients.
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17
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Griffin A, Mahesh A, Tiwari VK. Disruption of the gene regulatory programme in neurodevelopmental disorders. Biochim Biophys Acta Gene Regul Mech 2022; 1865:194860. [PMID: 36007842 DOI: 10.1016/j.bbagrm.2022.194860] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Revised: 08/10/2022] [Accepted: 08/12/2022] [Indexed: 06/15/2023]
Abstract
Cortical development consists of a series of synchronised events, including fate transition of cortical progenitors, neuronal migration, specification and connectivity. It is becoming clear that gene expression programs governing these events rely on the interplay between signalling molecules, transcription factors and epigenetic mechanisms. When genetic or environmental factors disrupt expression of genes involved in important brain development processes, neurodevelopmental disorders can occur. This review aims to highlight how recent advances in technologies have helped uncover and imitate the gene regulatory mechanisms commonly disrupted in neurodevelopmental disorders.
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Affiliation(s)
- Aoife Griffin
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queens University, Belfast BT9 7BL, United Kingdom
| | - Arun Mahesh
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queens University, Belfast BT9 7BL, United Kingdom
| | - Vijay K Tiwari
- Wellcome-Wolfson Institute for Experimental Medicine, School of Medicine, Dentistry & Biomedical Science, Queens University, Belfast BT9 7BL, United Kingdom.
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18
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Uzquiano A, Kedaigle AJ, Pigoni M, Paulsen B, Adiconis X, Kim K, Faits T, Nagaraja S, Antón-Bolaños N, Gerhardinger C, Tucewicz A, Murray E, Jin X, Buenrostro J, Chen F, Velasco S, Regev A, Levin JZ, Arlotta P. Proper acquisition of cell class identity in organoids allows definition of fate specification programs of the human cerebral cortex. Cell 2022; 185:3770-3788.e27. [PMID: 36179669 PMCID: PMC9990683 DOI: 10.1016/j.cell.2022.09.010] [Citation(s) in RCA: 45] [Impact Index Per Article: 22.5] [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: 03/20/2021] [Revised: 03/25/2022] [Accepted: 09/01/2022] [Indexed: 01/26/2023]
Abstract
Realizing the full utility of brain organoids to study human development requires understanding whether organoids precisely replicate endogenous cellular and molecular events, particularly since acquisition of cell identity in organoids can be impaired by abnormal metabolic states. We present a comprehensive single-cell transcriptomic, epigenetic, and spatial atlas of human cortical organoid development, comprising over 610,000 cells, from generation of neural progenitors through production of differentiated neuronal and glial subtypes. We show that processes of cellular diversification correlate closely to endogenous ones, irrespective of metabolic state, empowering the use of this atlas to study human fate specification. We define longitudinal molecular trajectories of cortical cell types during organoid development, identify genes with predicted human-specific roles in lineage establishment, and uncover early transcriptional diversity of human callosal neurons. The findings validate this comprehensive atlas of human corticogenesis in vitro as a resource to prime investigation into the mechanisms of human cortical development.
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Affiliation(s)
- Ana Uzquiano
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Amanda J Kedaigle
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Martina Pigoni
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Bruna Paulsen
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Xian Adiconis
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Kwanho Kim
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Tyler Faits
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Surya Nagaraja
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Gene Regulation Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Noelia Antón-Bolaños
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Chiara Gerhardinger
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Ashley Tucewicz
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Evan Murray
- Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Xin Jin
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Society of Fellows, Harvard University, Cambridge, MA 02138, USA
| | - Jason Buenrostro
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Department of Pathology, Massachusetts General Hospital, Boston, MA 02114, USA
| | - Fei Chen
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Silvia Velasco
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Aviv Regev
- Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Department of Biology, Massachusetts Institute of Technology, Cambridge, MA 02142, USA
| | - Joshua Z Levin
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA; Klarman Cell Observatory, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA
| | - Paola Arlotta
- Department of Stem Cell & Regenerative Biology, Harvard University, Cambridge, MA 02138, USA; Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, MA 02142, USA.
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19
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Brosolo M, Lecointre M, Laquerrière A, Janin F, Genty D, Lebon A, Lesueur C, Vivien D, Marret S, Marguet F, Gonzalez BJ. In utero alcohol exposure impairs vessel-associated positioning and differentiation of oligodendrocytes in the developing neocortex. Neurobiol Dis 2022; 171:105791. [PMID: 35760273 DOI: 10.1016/j.nbd.2022.105791] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 04/15/2022] [Revised: 05/30/2022] [Accepted: 06/10/2022] [Indexed: 11/16/2022] Open
Abstract
Prenatal alcohol exposure (PAE) is a major cause of nongenetic mental retardation and can lead to fetal alcohol syndrome (FAS), the most severe manifestation of fetal alcohol spectrum disorder (FASD). FASD infants present behavioral disabilities resulting from neurodevelopmental defects. Both grey and white matter lesions have been characterized and are associated with apoptotic death and/or ectopic migration profiles. In the last decade, it was shown that PAE impairs brain angiogenesis, and the radial organization of cortical microvessels is lost. Concurrently, several studies have reported that tangential migration of oligodendrocyte precursors (OPCs) originating from ganglionic eminences is vascular associated. Because numerous migrating oligodendrocytes enter the developing neocortex, the present study aimed to determine whether migrating OPCs interacted with radial cortical microvessels and whether alcohol-induced vascular impairments were associated with altered positioning and differentiation of cortical oligodendrocytes. Using a 3D morphometric analysis, the results revealed that in both human and mouse cortices, 15 to 40% of Olig2-positive cells were in close association with radial cortical microvessels, respectively. Despite perinatal vascular disorganization, PAE did not modify the vessel association of Olig2-positive cells but impaired their positioning between deep and superficial cortical layers. At the molecular level, PAE markedly but transiently reduced the expression of CNPase and MBP, two differentiation markers of immature and mature oligodendrocytes. In particular, PAE inverted their distribution profiles in cortical layers V and VI and reduced the thickness of the myelin sheath of efferent axons. These perinatal oligo-vascular defects were associated with motor disabilities that persisted in adults. Altogether, the present study provides the first evidence that Olig2-positive cells entering the neocortex are associated with radial microvessels. PAE disorganized the cortical microvasculature and delayed the positioning and differentiation of oligodendrocytes. Although most of these oligovascular defects occurred in perinatal life, the offspring developed long-term motor troubles. Altogether, these data suggest that alcohol-induced oligo-vascular impairments contribute to the neurodevelopmental issues described in FASD.
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Affiliation(s)
- M Brosolo
- Normandie Univ, UNIROUEN, INSERM U1245, Normandy Centre for Genomic and Personalized Medicine, F 76000 Rouen, France
| | - M Lecointre
- Normandie Univ, UNIROUEN, INSERM U1245, Normandy Centre for Genomic and Personalized Medicine, F 76000 Rouen, France
| | - A Laquerrière
- Normandie Univ, UNIROUEN, INSERM U1245, Normandy Centre for Genomic and Personalized Medicine, F 76000 Rouen, France; Department of Pathology, Rouen University Hospital, 76000 Rouen, France
| | - F Janin
- Normandie Univ, UNIROUEN, INSERM U1245, Normandy Centre for Genomic and Personalized Medicine, F 76000 Rouen, France
| | - D Genty
- Department of Pathology, Rouen University Hospital, 76000 Rouen, France
| | - A Lebon
- Normandie Univ, UNIROUEN, INSERM US 51, CNRS UAR 2026, HeRacLeS-PRIMACEN, 76000 Rouen, France
| | - C Lesueur
- Normandie Univ, UNIROUEN, INSERM U1245, Normandy Centre for Genomic and Personalized Medicine, F 76000 Rouen, France
| | - D Vivien
- Normandie Univ, UNICAEN, INSERM UMR-S U1237, Physiopathology and Imaging of Neurological Disorders (PhIND), GIP Cyceron, Institut Blood and Brain @ Caen-Normandie (BB@C), 14000 Caen, France; Department of Clinical Research, Caen-Normandie University Hospital, CHU, Avenue de la côte de Nacre, Caen, France
| | - S Marret
- Normandie Univ, UNIROUEN, INSERM U1245, Normandy Centre for Genomic and Personalized Medicine, F 76000 Rouen, France; Department of Neonatal Pediatrics and Intensive Care, Rouen University Hospital, 76000 Rouen, France
| | - F Marguet
- Normandie Univ, UNIROUEN, INSERM U1245, Normandy Centre for Genomic and Personalized Medicine, F 76000 Rouen, France; Department of Pathology, Rouen University Hospital, 76000 Rouen, France
| | - B J Gonzalez
- Normandie Univ, UNIROUEN, INSERM U1245, Normandy Centre for Genomic and Personalized Medicine, F 76000 Rouen, France.
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20
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Giffin-Rao Y, Sheng J, Strand B, Xu K, Huang L, Medo M, Risgaard KA, Dantinne S, Mohan S, Keshan A, Daley RA, Levesque B, Amundson L, Reese R, Sousa AMM, Tao Y, Wang D, Zhang SC, Bhattacharyya A. Altered patterning of trisomy 21 interneuron progenitors. Stem Cell Reports 2022; 17:1366-1379. [PMID: 35623352 PMCID: PMC9214050 DOI: 10.1016/j.stemcr.2022.05.001] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 05/01/2022] [Accepted: 05/02/2022] [Indexed: 11/17/2022] Open
Abstract
Individuals with Down syndrome (DS; Ts21), the most common genetic cause of intellectual disability, have smaller brains that reflect fewer neurons at pre- and post-natal stages, implicating impaired neurogenesis during development. Our stereological analysis of adult DS cortex indicates a reduction of calretinin-expressing interneurons. Using Ts21 human induced pluripotent stem cells (iPSCs) and isogenic controls, we find that Ts21 progenitors generate fewer COUP-TFII+ progenitors with reduced proliferation. Single-cell RNA sequencing of Ts21 progenitors confirms the altered specification of progenitor subpopulations and identifies reduced WNT signaling. Activation of WNT signaling partially restores the COUP-TFII+ progenitor population in Ts21, suggesting that altered WNT signaling contributes to the defective development of cortical interneurons in DS.
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Affiliation(s)
| | - Jie Sheng
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Bennett Strand
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Ke Xu
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Leslie Huang
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Margaret Medo
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | | | - Samuel Dantinne
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Sruti Mohan
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Aratrika Keshan
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Roger A Daley
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Bradley Levesque
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Lindsey Amundson
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Rebecca Reese
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - André M M Sousa
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Yunlong Tao
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Daifeng Wang
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Su-Chun Zhang
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neurology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Anita Bhattacharyya
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA.
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21
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Terry BK, Kim S. The Role of Hippo-YAP/TAZ Signaling in Brain Development. Dev Dyn 2022; 251:1644-1665. [PMID: 35651313 DOI: 10.1002/dvdy.504] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [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: 12/17/2021] [Revised: 05/19/2022] [Accepted: 05/24/2022] [Indexed: 11/08/2022] Open
Abstract
In order for our complex nervous system to develop normally, both precise spatial and temporal regulation of a number of different signaling pathways is critical. During both early embryogenesis and in organ development, one pathway that has been repeatedly implicated is the Hippo-YAP/TAZ signaling pathway. The paralogs YAP and TAZ are transcriptional co-activators that play an important role in cell proliferation, cell differentiation, and organ growth. Regulation of these proteins by the Hippo kinase cascade is therefore important for normal development. In this article, we review the growing field of research surrounding the role of Hippo-YAP/TAZ signaling in normal and atypical brain development. Starting from the development of the neural tube to the development and refinement of the cerebral cortex, cerebellum, and ventricular system, we address the typical role of these transcriptional co-activators, the functional consequences that manipulation of YAP/TAZ and their upstream regulators have on brain development, and where further research may be of benefit. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Bethany K Terry
- Shriners Hospitals Pediatrics Research Center, Department of Neural Sciences, Temple University Lewis Katz School of Medicine, Philadelphia, PA.,Biomedical Sciences Graduate Program, Temple University Lewis Katz School of Medicine, Philadelphia, PA, USA
| | - Seonhee Kim
- Shriners Hospitals Pediatrics Research Center, Department of Neural Sciences, Temple University Lewis Katz School of Medicine, Philadelphia, PA
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22
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Uenaka M, Uyeda A, Nakahara T, Muramatsu R. LPA 2 promotes neuronal differentiation and neurite formation in neo cortical development. Biochem Biophys Res Commun 2022; 598:89-94. [PMID: 35151977 DOI: 10.1016/j.bbrc.2022.01.109] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [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: 11/29/2021] [Accepted: 01/27/2022] [Indexed: 11/18/2022]
Abstract
Lysophosphatidic acid (LPA) is a bioactive lipid that activates the G protein-coupled receptors, LPA1-6, which are associated with a wide number of cellular responses including proliferation, migration, differentiation, and survival. Although LPA1-6 are expressed in the developing brain, their functions in brain development are not fully understood. In the present study, we analyzed the temporal expression pattern of LPA receptors (LPARs) during neocortical development and found that LPA2 is highly expressed in neural stem/progenitor cells (NS/PCs) in the embryonic neocortex. LPA2 activation on cultured NS/PCs using GRI977143, a selective LPA2 agonist, promoted neuronal differentiation. LPA2-induced neuronal expansion was inhibited by FR180204, an extracellular signal-regulated kinase 1/2 (Erk1/2) inhibitor, suggesting that LPA2 promotes neuronal differentiation via Erk1/2 signaling. In addition, LPA2 activation promotes neurite elongation and branch formation. These results suggest that LPA2 is a critical regulator of neuronal differentiation and development.
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Affiliation(s)
- Mizuki Uenaka
- Department of Molecular Pharmacology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-higashi, Kodaira, Tokyo, 187-8502, Japan; Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Akiko Uyeda
- Department of Molecular Pharmacology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-higashi, Kodaira, Tokyo, 187-8502, Japan
| | - Tsutomu Nakahara
- Department of Molecular Pharmacology, Kitasato University School of Pharmaceutical Sciences, 5-9-1 Shirokane, Minato-ku, Tokyo, 108-8641, Japan
| | - Rieko Muramatsu
- Department of Molecular Pharmacology, National Institute of Neuroscience, National Center of Neurology and Psychiatry, 4-1-1 Ogawa-higashi, Kodaira, Tokyo, 187-8502, Japan.
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23
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Li X, Zhang S, Jiang X, Zhang S, Han J, Guo L, Zhang T. Cortical development coupling between surface area and sulcal depth on macaque brains. Brain Struct Funct 2022; 227:1013-1029. [PMID: 34989870 DOI: 10.1007/s00429-021-02444-z] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [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: 08/23/2021] [Accepted: 12/15/2021] [Indexed: 02/06/2023]
Abstract
Postnatal development of cerebral cortex is associated with a variety of neuronal processes and is thus critical to development of brain function and cognition. Longitudinal changes of cortical morphology and topology, such as postnatal cortical thinning and flattening have been widely studied. However, thorough and systematic investigation of such cortical change, including how to quantify it from multiple spatial directions and how to relate it to surface topology, is rarely found. In this work, based on a longitudinal macaque neuroimaging dataset, we quantified local changes in gyral white matter's surface area and sulcal depth during early development. We also investigated how these two metrics are coupled and how this coupling is linked to cortical surface topology, underlying white matter, and positions of functional areas. Semi-parametric generalized additive models were adopted to quantify the longitudinal changes of surface area (A) and sulcal depth (D), and the coupling patterns between them. This resulted in four classes of regions, according to how they change compared with global change throughout early development: slower surface area change and slower sulcal depth change (slowA_slowD), slower surface area change and faster sulcal depth change (slowA_fastD), faster surface area change and slower sulcal depth change (fastA_slowD), and faster surface area change and faster sulcal depth change (fastA_fastD). We found that cortex-related metrics, including folding pattern and cortical thickness, vary along slowA_fastD-fastA_slowD axis, and structural connection-related metrics vary along fastA_fastD-slowA_slowD axis, with which brain functional sites align better. It is also found that cortical landmarks, including sulcal pits and gyral hinges, spatially reside on the borders of the four patterns. These findings shed new lights on the relationship between cortex development, surface topology, axonal wiring pattern and brain functions.
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Affiliation(s)
- Xiao Li
- School of Automation, Northwestern Polytechnical University, Xi'an, China
| | - Songyao Zhang
- School of Automation, Northwestern Polytechnical University, Xi'an, China
| | - Xi Jiang
- School of Life Science and Technology, University of Electronic Science and Technology of China, Chengdu, China
| | - Shu Zhang
- School of Computer Science, Northwestern Polytechnical University, Xi'an, China
| | - Junwei Han
- School of Automation, Northwestern Polytechnical University, Xi'an, China
| | - Lei Guo
- School of Automation, Northwestern Polytechnical University, Xi'an, China
| | - Tuo Zhang
- School of Automation, Northwestern Polytechnical University, Xi'an, China.
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24
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Hilgetag CC, Goulas A, Changeux JP. A natural cortical axis connecting the outside and inside of the human brain. Netw Neurosci 2022; 6:950-959. [PMID: 36875013 PMCID: PMC9976644 DOI: 10.1162/netn_a_00256] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 05/17/2022] [Indexed: 11/04/2022] Open
Abstract
What structural and connectivity features of the human brain help to explain the extraordinary human cognitive abilities? We recently proposed a set of relevant connectomic fundamentals, some of which arise from the size scaling of the human brain relative to other primate brains, while others of these fundamentals may be uniquely human. In particular, we suggested that the remarkable increase of the size of the human brain due to its prolonged prenatal development has brought with it an increased sparsification, hierarchical modularization, as well as increased depth and cytoarchitectonic differentiation of brain networks. These characteristic features are complemented by a shift of projection origins to the upper layers of many cortical areas as well as the significantly prolonged postnatal development and plasticity of the upper cortical layers. Another fundamental aspect of cortical organization that has emerged in recent research is the alignment of diverse features of evolution, development, cytoarchitectonics, function, and plasticity along a principal, natural cortical axis from sensory ("outside") to association ("inside") areas. Here we highlight how this natural axis is integrated in the characteristic organization of the human brain. In particular, the human brain displays a developmental expansion of outside areas and a stretching of the natural axis such that outside areas are more widely separated from each other and from inside areas than in other species. We outline some functional implications of this characteristic arrangement.
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Affiliation(s)
- Claus C Hilgetag
- Institute of Computational Neuroscience, University Medical Center Eppendorf, Hamburg University, Hamburg, Germany.,Department of Health Sciences, Boston University, Boston, MA, USA
| | - Alexandros Goulas
- Institute of Computational Neuroscience, University Medical Center Eppendorf, Hamburg University, Hamburg, Germany
| | - Jean-Pierre Changeux
- CNRS UMR 3571, Institut Pasteur, Paris, France.,Communications Cellulaires, Collège de France, Paris, France
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25
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Dimitrova R, Pietsch M, Ciarrusta J, Fitzgibbon SP, Williams LZJ, Christiaens D, Cordero-Grande L, Batalle D, Makropoulos A, Schuh A, Price AN, Hutter J, Teixeira RP, Hughes E, Chew A, Falconer S, Carney O, Egloff A, Tournier JD, McAlonan G, Rutherford MA, Counsell SJ, Robinson EC, Hajnal JV, Rueckert D, Edwards AD, O'Muircheartaigh J. Preterm birth alters the development of cortical microstructure and morphology at term-equivalent age. Neuroimage 2021; 243:118488. [PMID: 34419595 PMCID: PMC8526870 DOI: 10.1016/j.neuroimage.2021.118488] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Revised: 07/16/2021] [Accepted: 08/19/2021] [Indexed: 11/27/2022] Open
Abstract
INTRODUCTION The dynamic nature and complexity of the cellular events that take place during the last trimester of pregnancy make the developing cortex particularly vulnerable to perturbations. Abrupt interruption to normal gestation can lead to significant deviations to many of these processes, resulting in atypical trajectory of cortical maturation in preterm birth survivors. METHODS We sought to first map typical cortical micro- and macrostructure development using invivo MRI in a large sample of healthy term-born infants scanned after birth (n = 259). Then we offer a comprehensive characterization of the cortical consequences of preterm birth in 76 preterm infants scanned at term-equivalent age (37-44 weeks postmenstrual age). We describe the group-average atypicality, the heterogeneity across individual preterm infants, and relate individual deviations from normative development to age at birth and neurodevelopment at 18 months. RESULTS In the term-born neonatal brain, we observed heterogeneous and regionally specific associations between age at scan and measures of cortical morphology and microstructure, including rapid surface expansion, greater cortical thickness, lower cortical anisotropy and higher neurite orientation dispersion. By term-equivalent age, preterm infants had on average increased cortical tissue water content and reduced neurite density index in the posterior parts of the cortex, and greater cortical thickness anteriorly compared to term-born infants. While individual preterm infants were more likely to show extreme deviations (over 3.1 standard deviations) from normative cortical maturation compared to term-born infants, these extreme deviations were highly variable and showed very little spatial overlap between individuals. Measures of regional cortical development were associated with age at birth, but not with neurodevelopment at 18 months. CONCLUSION We showed that preterm birth alters cortical micro- and macrostructural maturation near the time of full-term birth. Deviations from normative development were highly variable between individual preterm infants.
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Affiliation(s)
- Ralica Dimitrova
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom; Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
| | - Maximilian Pietsch
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Judit Ciarrusta
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom; Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
| | - Sean P Fitzgibbon
- Centre for Functional MRI of the Brain (FMRIB), Welcome Centre for Integrative Neuroimaging, Nuffield Department of Clinical Neurosciences, University of Oxford, Oxford, United Kingdom
| | - Logan Z J Williams
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Daan Christiaens
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom; Department of Electrical Engineering, ESAT/PSI, KU Leuven, Belgium
| | - Lucilio Cordero-Grande
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom; Biomedical Image Technologies, ETSI Telecomunicación, Universidad Politécnica de Madrid and CIBER-BBN, Madrid, Spain
| | - Dafnis Batalle
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom; Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom
| | - Antonios Makropoulos
- Biomedical Image Analysis Group, Department of Computing, Imperial College London, London, United Kingdom
| | - Andreas Schuh
- Biomedical Image Analysis Group, Department of Computing, Imperial College London, London, United Kingdom
| | - Anthony N Price
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Jana Hutter
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Rui Pag Teixeira
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Emer Hughes
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Andrew Chew
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Shona Falconer
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Olivia Carney
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Alexia Egloff
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - J-Donald Tournier
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Grainne McAlonan
- Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom; MRC Centre for Neurodevelopmental Disorders, King's College London, London, United Kingdom; South London and Maudsley NHS Foundation Trust, London, United Kingdom
| | - Mary A Rutherford
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Serena J Counsell
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Emma C Robinson
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Joseph V Hajnal
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom
| | - Daniel Rueckert
- Biomedical Image Analysis Group, Department of Computing, Imperial College London, London, United Kingdom; Faculty of Informatics and Medicine, Klinikum rechts der Isar, Technical University of Munich, Munich, Germany
| | - A David Edwards
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom; MRC Centre for Neurodevelopmental Disorders, King's College London, London, United Kingdom
| | - Jonathan O'Muircheartaigh
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King's College London, London, United Kingdom; Department of Forensic and Neurodevelopmental Sciences, Institute of Psychiatry, Psychology and Neuroscience, King's College London, London, United Kingdom; MRC Centre for Neurodevelopmental Disorders, King's College London, London, United Kingdom.
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26
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White AK, Baumgartner M, Lee MF, Drake KD, Aquino GS, Kanadia RN. Trp53 ablation fails to prevent microcephaly in mouse pallium with impaired minor intron splicing. Development 2021; 148:272517. [PMID: 34557915 DOI: 10.1242/dev.199591] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2021] [Accepted: 09/17/2021] [Indexed: 12/21/2022]
Abstract
Minor spliceosome inhibition due to mutations in RNU4ATAC are linked to primary microcephaly. Ablation of Rnu11, which encodes a minor spliceosome snRNA, inhibits the minor spliceosome in the developing mouse pallium, causing microcephaly. There, cell cycle defects and p53-mediated apoptosis in response to DNA damage resulted in loss of radial glial cells (RGCs), underpinning microcephaly. Here, we ablated Trp53 to block cell death in Rnu11 cKO mice. We report that Trp53 ablation failed to prevent microcephaly in these double knockout (dKO) mice. We show that the transcriptome of the dKO pallium was more similar to the control compared with the Rnu11 cKO. We find aberrant minor intron splicing in minor intron-containing genes involved in cell cycle regulation, resulting in more severely impaired mitotic progression and cell cycle lengthening of RGCs in the dKO that was detected earlier than in the Rnu11 cKO. Furthermore, we discover a potential role of p53 in causing DNA damage in the developing pallium, as detection of γH2aX+ was delayed in the dKO. Thus, we postulate that microcephaly in minor spliceosome-related diseases is primarily caused by cell cycle defects.
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Affiliation(s)
- Alisa K White
- Physiology and Neurobiology Department, University of Connecticut, Storrs, CT 06269, USA
| | | | - Madisen F Lee
- Physiology and Neurobiology Department, University of Connecticut, Storrs, CT 06269, USA
| | - Kyle D Drake
- Physiology and Neurobiology Department, University of Connecticut, Storrs, CT 06269, USA
| | - Gabriela S Aquino
- Physiology and Neurobiology Department, University of Connecticut, Storrs, CT 06269, USA
| | - Rahul N Kanadia
- Physiology and Neurobiology Department, University of Connecticut, Storrs, CT 06269, USA.,Institute of Systems Genomics, University of Connecticut, Storrs, CT 06269, USA
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27
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Wang D, Howell BW, Olson EC. Maternal Ethanol Exposure Acutely Elevates Src Family Kinase Activity in the Fetal Cortex. Mol Neurobiol 2021. [PMID: 34272687 DOI: 10.1007/s12035-021-02467-x] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2021] [Accepted: 06/20/2021] [Indexed: 11/24/2022]
Abstract
Fetal alcohol syndrome (FAS) is characterized by disrupted fetal brain development and postnatal cognitive impairment. The targets of alcohol are diverse, and it is not clear whether there are common underlying molecular mechanisms producing these disruptions. Prior work established that acute ethanol exposure causes a transient increase in tyrosine phosphorylation of multiple proteins in cultured embryonic cortical cells. In this study, we show that a similar tyrosine phosphorylation transient occurs in the fetal brain after maternal dosing with ethanol. Using phospho-specific antibodies and immunohistochemistry, we mapped regions of highest tyrosine phosphorylation in the fetal cerebral cortex and found that areas of dendritic and axonal growth showed elevated tyrosine phosphorylation 10 min after maternal ethanol exposure. These were also areas of Src expression and Src family kinase (SFK) activation loop phosphorylation (pY416) expression. Importantly, maternal pretreatment with the SFK inhibitor dasatinib completely prevents both the pY416 increase and the tyrosine phosphorylation response. The phosphorylation response was observed in the perisomatic region and neurites of immature migrating and differentiating primary neurons. Importantly, the initial phosphotyrosine transient (~ 30 min) targets both Src and Dab1, two critical elements in Reelin signaling, a pathway required for normal cortical development. This initial phosphorylation response is followed by sustained reduction in Ser3 phosphorylation of n-cofilin, a critical actin severing protein and an identified downstream effector of Reelin signaling. This biochemical disruption is associated with sustained reduction of F-actin content and disrupted Golgi apparatus morphology in developing cortical neurons. The finding outlines a model in which the initial activation of SFKs by ethanol has the potential to disrupt multiple developmentally important signaling systems for several hours after maternal exposure.
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28
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Ichinose M, Suzuki N, Wang T, Kobayashi H, Vrbanac L, Ng JQ, Wright JA, Lannagan TRM, Gieniec KA, Lewis M, Ando R, Enomoto A, Koblar S, Thomas P, Worthley DL, Woods SL. The BMP antagonist gremlin 1 contributes to the development of cortical excitatory neurons, motor balance and fear responses. Development 2021; 148:269258. [PMID: 34184027 PMCID: PMC8313862 DOI: 10.1242/dev.195883] [Citation(s) in RCA: 6] [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] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Accepted: 06/15/2021] [Indexed: 12/13/2022]
Abstract
Bone morphogenetic protein (BMP) signaling is required for early forebrain development and cortical formation. How the endogenous modulators of BMP signaling regulate the structural and functional maturation of the developing brain remains unclear. Here, we show that expression of the BMP antagonist Grem1 marks committed layer V and VI glutamatergic neurons in the embryonic mouse brain. Lineage tracing of Grem1-expressing cells in the embryonic brain was examined by administration of tamoxifen to pregnant Grem1creERT; Rosa26LSLTdtomato mice at 13.5 days post coitum (dpc), followed by collection of embryos later in gestation. In addition, at 14.5 dpc, bulk mRNA-seq analysis of differentially expressed transcripts between FACS-sorted Grem1-positive and -negative cells was performed. We also generated Emx1-cre-mediated Grem1 conditional knockout mice (Emx1-Cre;Grem1flox/flox) in which the Grem1 gene was deleted specifically in the dorsal telencephalon. Grem1Emx1cKO animals had reduced cortical thickness, especially layers V and VI, and impaired motor balance and fear sensitivity compared with littermate controls. This study has revealed new roles for Grem1 in the structural and functional maturation of the developing cortex. Summary: The BMP antagonist Grem1 is expressed by committed deep-layer glutamatergic neurons in the embryonic mouse cortex. Grem1 conditional knockout mice display cortical and behavioral abnormalities.
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Affiliation(s)
- Mari Ichinose
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Nobumi Suzuki
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Tongtong Wang
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Hiroki Kobayashi
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia.,Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Laura Vrbanac
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Jia Q Ng
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Josephine A Wright
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Tamsin R M Lannagan
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Krystyna A Gieniec
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Martin Lewis
- Department of Psychiatry, College of Medicine and Public Health, Flinders University, Bedford Park, SA 5001, Australia.,Lifelong Health, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Ryota Ando
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Atsushi Enomoto
- Department of Pathology, Nagoya University Graduate School of Medicine, Nagoya 466-8560, Japan
| | - Simon Koblar
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Lifelong Health, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Paul Thomas
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Daniel L Worthley
- Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
| | - Susan L Woods
- School of Medicine, Faculty of Health and Medical Sciences, University of Adelaide, SA 5000, Australia.,Precision Medicine, South Australian Health and Medical Research Institute, Adelaide, SA 5000, Australia
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29
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Bartlett T. Fusion of single-cell transcriptome and DNA-binding data, for genomic network inference in cortical development. BMC Bioinformatics 2021; 22:301. [PMID: 34088262 PMCID: PMC8176738 DOI: 10.1186/s12859-021-04201-9] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Accepted: 05/12/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Network models are well-established as very useful computational-statistical tools in cell biology. However, a genomic network model based only on gene expression data can, by definition, only infer gene co-expression networks. Hence, in order to infer gene regulatory patterns, it is necessary to also include data related to binding of regulatory factors to DNA. RESULTS We propose a new dynamic genomic network model, for inferring patterns of genomic regulatory influence in dynamic processes such as development. Our model fuses experiment-specific gene expression data with publicly available DNA-binding data. The method we propose is computationally efficient, and can be applied to genome-wide data with tens of thousands of transcripts. Thus, our method is well suited for use as an exploratory tool for genome-wide data. We apply our method to data from human fetal cortical development, and our findings confirm genomic regulatory patterns which are recognised as being fundamental to neuronal development. CONCLUSIONS Our method provides a mathematical/computational toolbox which, when coupled with targeted experiments, will reveal and confirm important new functional genomic regulatory processes in mammalian development.
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Affiliation(s)
- Thomas Bartlett
- University College London, Gower Street, London, WC1E 6BT, UK.
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30
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Shohayeb B, Muzar Z, Cooper HM. Conservation of neural progenitor identity and the emergence of neocortical neuronal diversity. Semin Cell Dev Biol 2021; 118:4-13. [PMID: 34083116 DOI: 10.1016/j.semcdb.2021.05.024] [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] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2021] [Revised: 05/17/2021] [Accepted: 05/18/2021] [Indexed: 11/27/2022]
Abstract
One paramount challenge for neuroscientists over the past century has been to identify the embryonic origins of the enormous diversity of cortical neurons found in the adult human neocortex and to unravel the developmental processes governing their emergence. In all mammals, including humans, the radial glia lining the ventricles of the embryonic telencephalon, more recently reclassified as apical radial glia (aRGs), have been identified as the neural progenitors giving rise to all excitatory neurons and inhibitory interneurons of the six-layered cortex. In this review, we explore the fundamental molecular and cellular mechanisms that regulate aRG function and the generation of neuronal diversity in the dorsal telencephalon. We survey the key structural features essential for the retention of the highly polarized aRG morphology and therefore impose aRG identity after cytokinesis. We discuss how these structures and associated molecular signaling complexes influence aRG proliferative capacity and the decision to undergo proliferative self-renewing symmetric or neurogenic asymmetric divisions. We also explore the intriguing and complex question of how the extensive neuronal diversity within the adult neocortex arises from the small aRG population located within the cortical proliferative zone. We further highlight the recent clonal lineage tracing and single-cell transcriptomic profiling studies providing compelling evidence that individual neuronal identity emerges as a consequence of exposure to temporally regulated extrinsic cues which coordinate waves of transcriptional activity that evolve over time to drive neuronal commitment and maturation.
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Affiliation(s)
- Belal Shohayeb
- The University of Queensland, Queensland Brain Institute, Brisbane, Queensland 4072, Australia.
| | - Zukhrofi Muzar
- The University of Queensland, Queensland Brain Institute, Brisbane, Queensland 4072, Australia
| | - Helen M Cooper
- The University of Queensland, Queensland Brain Institute, Brisbane, Queensland 4072, Australia.
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31
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Sleurs C, Blommaert J, Batalle D, Verly M, Sunaert S, Peeters R, Lemiere J, Uyttebroeck A, Deprez S. Cortical thinning and altered functional brain coherence in survivors of childhood sarcoma. Brain Imaging Behav 2021; 15:677-688. [PMID: 32335825 DOI: 10.1007/s11682-020-00276-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 12/01/2022]
Abstract
High-dose chemotherapy is increasingly evidenced to be neurotoxic and result in long-term neurocognitive sequelae. However, research investigating grey matter alterations in childhood cancer patients remains limited. As childhood sarcoma patients receive high-dose chemotherapy, we aimed to investigate cortical brain alterations in adult survivors. We analyzed high-resolution structural (T1-weighted) MRI and resting-state functional MRI (rsfMRI), to derive structural and functional cortical information in survivors of childhood sarcoma, treated with high-dose intravenous chemotherapy (n = 33). These scans were compared to age- and gender- matched controls (n = 34). Cortical volume and thickness were investigated using voxel-based morphometry and vertex-wise surface-based morphometry. Brain regions showing significant group differences in volume or thickness were implemented as seeds of interest to estimate their resting state co-activity with other areas (i.e. functional coherence). We explored whether structural measures were associated with potential risk factors, such as age at diagnosis, and cumulative doses of chemotherapeutic agents (methotrexate, ifosfamide). Finally, we investigated the link between functional regional strength, neurocognitive assessments and daily life complaints. In patients relative to controls we observed lower grey matter volumes in cerebellar and frontal areas, as well as frontal cortical thinning. Cerebellar volume and orbitofrontal thickness appeared dose- and age-related, respectively. Cortical thickness of the parahippocampal area appeared lower, only if the group comparison was not adjusted for depression. This region specifically showed lower functional coherence, which was associated with lower processing speed. This study suggests cortical thinning as well as decreased functional coherence in survivors of childhood sarcoma, which could be important for both long-term attentional functioning and emotional distress in daily life. Frontal areas might be specifically vulnerable during adolescence.
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Affiliation(s)
| | | | - Dafnis Batalle
- Department of Forensic & Neurodevelopmental Science, Institute of Psychiatry, Psychology & Neuroscience, King's College, London, UK.,Centre for the Developing Brain, School of Biomedical Engineering & Imaging Sciences, King's College London, London, UK
| | - Marjolein Verly
- Department of Neurosciences, ExpORL, KU Leuven, Leuven, Belgium
| | - Stefan Sunaert
- Department of Radiology, University Hospital Leuven, Leuven, Belgium.,Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
| | - Ron Peeters
- Department of Radiology, University Hospital Leuven, Leuven, Belgium
| | - Jurgen Lemiere
- Department of Pediatric Hematology and Oncology, University Hospital Leuven, Leuven, Belgium
| | - Anne Uyttebroeck
- Department of Oncology, KU Leuven, Leuven, Belgium.,Department of Pediatric Hematology and Oncology, University Hospital Leuven, Leuven, Belgium
| | - Sabine Deprez
- Department of Imaging and Pathology, KU Leuven, Leuven, Belgium
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32
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Specchio N, Pepi C, De Palma L, Trivisano M, Vigevano F, Curatolo P. Neuroimaging and genetic characteristics of malformation of cortical development due to mTOR pathway dysregulation: clues for the epileptogenic lesions and indications for epilepsy surgery. Expert Rev Neurother 2021; 21:1333-1345. [PMID: 33754929 DOI: 10.1080/14737175.2021.1906651] [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: 10/21/2022]
Abstract
Introduction: Malformation of cortical development (MCD) is strongly associated with drug-resistant epilepsies for which surgery to remove epileptogenic lesions is common. Two notable technological advances in this field are identification of the underlying genetic cause and techniques in neuroimaging. These now question how presurgical evaluation ought to be approached for 'mTORpathies.'Area covered: From review of published primary and secondary articles, the authors summarize evidence to consider focal cortical dysplasia (FCD), tuber sclerosis complex (TSC), and hemimegalencephaly (HME) collectively as MCD mTORpathies. The authors also consider the unique features of these related conditions with particular focus on the practicalities of using neuroimaging techniques currently available to define surgical targets and predict post-surgical outcome. Ultimately, the authors consider the surgical dilemmas faced for each condition.Expert opinion: Considering FCD, TSC, and HME collectively as mTORpathies has some merit; however, a unified approach to presurgical evaluation would seem unachievable. Nevertheless, the authors believe combining genetic-centered classification and morphologic findings using advanced imaging techniques will eventually form the basis of a paradigm when considering candidacy for early surgery.
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Affiliation(s)
- Nicola Specchio
- Rare and Complex Epilepsy Unit, Department of Neurosciences, Bambino Gesù Children's Hospital, IRCCS, Member of European Reference Network EpiCARE, Rome, Italy
| | - Chiara Pepi
- Rare and Complex Epilepsy Unit, Department of Neurosciences, Bambino Gesù Children's Hospital, IRCCS, Member of European Reference Network EpiCARE, Rome, Italy
| | - Luca De Palma
- Rare and Complex Epilepsy Unit, Department of Neurosciences, Bambino Gesù Children's Hospital, IRCCS, Member of European Reference Network EpiCARE, Rome, Italy
| | - Marina Trivisano
- Rare and Complex Epilepsy Unit, Department of Neurosciences, Bambino Gesù Children's Hospital, IRCCS, Member of European Reference Network EpiCARE, Rome, Italy
| | - Federico Vigevano
- Department of Neuroscience, Bambino Gesù Children's Hospital, IRCCS, Member of European Reference Network EpiCARE, Rome, Italy
| | - Paolo Curatolo
- Child Neurology and Psychiatry Unit, Systems Medicine Department, Tor Vergata University, Rome, Italy
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33
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Arellano JI, Morozov YM, Micali N, Rakic P. Radial Glial Cells: New Views on Old Questions. Neurochem Res 2021. [PMID: 33725233 DOI: 10.1007/s11064-021-03296-z] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 02/26/2021] [Accepted: 03/02/2021] [Indexed: 10/21/2022]
Abstract
Radial glial cells (RGC) are at the center of brain development in vertebrates, acting as progenitors for neurons and macroglia (oligodendrocytes and astrocytes) and as guides for migration of neurons from the ventricular surface to their final positions in the brain. These cells originate from neuroepithelial cells (NEC) from which they inherit their epithelial features and polarized morphology, with processes extending from the ventricular to the pial surface of the embryonic cerebrum. We have learnt a great deal since the first descriptions of these cells at the end of the nineteenth century. However, there are still questions regarding how and when NEC transform into RGC or about the function of intermediate filaments such as glial fibrillary acidic protein (GFAP) in RGCs and their dynamics during neurogenesis. For example, it is not clear why RGCs in primates, including humans, express GFAP at the onset of cortical neurogenesis while in rodents it is expressed when it is essentially complete. Based on an ultrastructural analysis of GFAP expression and cell morphology of dividing progenitors in the developing neocortex of the macaque monkey, we show that RGCs become the main progenitor in the developing cerebrum by the start of neurogenesis, as all dividing cells show glial features such as GFAP expression and lack of tight junctions. Also, our data suggest that RGCs retract their apical process during mitosis. We discuss our findings in the context of the role and molecular characteristics of RGCs in the vertebrate brain, their differences with NECs and their dynamic behavior during the process of neurogenesis.
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34
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Akkaya C, Atak D, Kamacioglu A, Akarlar BA, Guner G, Bayam E, Taskin AC, Ozlu N, Ince-Dunn G. Roles of developmentally regulated KIF2A alternative isoforms in cortical neuron migration and differentiation. Development 2021; 148:dev.192674. [PMID: 33531432 DOI: 10.1242/dev.192674] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [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: 05/08/2020] [Accepted: 01/18/2021] [Indexed: 11/20/2022]
Abstract
KIF2A is a kinesin motor protein with essential roles in neural progenitor division and axonal pruning during brain development. However, how different KIF2A alternative isoforms function during development of the cerebral cortex is not known. Here, we focus on three Kif2a isoforms expressed in the developing cortex. We show that Kif2a is essential for dendritic arborization in mice and that the functions of all three isoforms are sufficient for this process. Interestingly, only two of the isoforms can sustain radial migration of cortical neurons; a third isoform, lacking a key N-terminal region, is ineffective. By proximity-based interactome mapping for individual isoforms, we identify previously known KIF2A interactors, proteins localized to the mitotic spindle poles and, unexpectedly, also translation factors, ribonucleoproteins and proteins that are targeted to organelles, prominently to the mitochondria. In addition, we show that a KIF2A mutation, which causes brain malformations in humans, has extensive changes to its proximity-based interactome, with depletion of mitochondrial proteins identified in the wild-type KIF2A interactome. Our data raises new insights about the importance of alternative splice variants during brain development.
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Affiliation(s)
- Cansu Akkaya
- Department of Molecular Biology and Genetics, Koç University, 34450 Istanbul, Turkey
| | - Dila Atak
- Department of Molecular Biology and Genetics, Koç University, 34450 Istanbul, Turkey
| | - Altug Kamacioglu
- Department of Molecular Biology and Genetics, Koç University, 34450 Istanbul, Turkey
| | - Busra Aytul Akarlar
- Department of Molecular Biology and Genetics, Koç University, 34450 Istanbul, Turkey
| | - Gokhan Guner
- Department of Molecular Biology and Genetics, Koç University, 34450 Istanbul, Turkey
| | - Efil Bayam
- Department of Molecular Biology and Genetics, Koç University, 34450 Istanbul, Turkey
| | - Ali Cihan Taskin
- Embryo Manipulation Laboratory, Animal Research Facility, Translational Medicine Research Center, Koç University, 34450 Istanbul, Turkey
| | - Nurhan Ozlu
- Department of Molecular Biology and Genetics, Koç University, 34450 Istanbul, Turkey
| | - Gulayse Ince-Dunn
- Department of Molecular Biology and Genetics, Koç University, 34450 Istanbul, Turkey .,Stem Cells and Metabolism Research Program, Faculty of Medicine, University of Helsinki, 00290 Helsinki, Finland
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35
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Abstract
Mitochondria are signaling hubs responsible for the generation of energy through oxidative phosphorylation, the production of key metabolites that serve the bioenergetic and biosynthetic needs of the cell, calcium (Ca2+) buffering and the initiation/execution of apoptosis. The ability of mitochondria to coordinate this myriad of functions is achieved through the exquisite regulation of fundamental dynamic properties, including remodeling of the mitochondrial network via fission and fusion, motility and mitophagy. In this Review, we summarize the current understanding of the mechanisms by which these dynamic properties of the mitochondria support mitochondrial function, review their impact on human cortical development and highlight areas in need of further research.
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Affiliation(s)
- Tierney Baum
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37232, USA
| | - Vivian Gama
- Department of Cell and Developmental Biology, Vanderbilt University, Nashville, TN 37232, USA
- Vanderbilt Center for Stem Cell Biology, Vanderbilt University, Nashville, TN 37232, USA
- Vanderbilt Brain Institute, Vanderbilt University, Nashville, TN 37232, USA
- Vanderbilt Ingram Cancer Center, Vanderbilt University, Nashville, TN 37232, USA
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36
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Ulmke PA, Xie Y, Sokpor G, Pham L, Shomroni O, Berulava T, Rosenbusch J, Basu U, Fischer A, Nguyen HP, Staiger JF, Tuoc T. Post-transcriptional regulation by the exosome complex is required for cell survival and forebrain development via repression of P53 signaling. Development 2021; 148:dev.188276. [PMID: 33462115 DOI: 10.1242/dev.188276] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [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: 01/16/2020] [Accepted: 12/29/2020] [Indexed: 12/15/2022]
Abstract
Fine-tuned gene expression is crucial for neurodevelopment. The gene expression program is tightly controlled at different levels, including RNA decay. N6-methyladenosine (m6A) methylation-mediated degradation of RNA is essential for brain development. However, m6A methylation impacts not only RNA stability, but also other RNA metabolism processes. How RNA decay contributes to brain development is largely unknown. Here, we show that Exosc10, a RNA exonuclease subunit of the RNA exosome complex, is indispensable for forebrain development. We report that cortical cells undergo overt apoptosis, culminating in cortical agenesis upon conditional deletion of Exosc10 in mouse cortex. Mechanistically, Exosc10 directly binds and degrades transcripts of the P53 signaling-related genes, such as Aen and Bbc3. Overall, our findings suggest a crucial role for Exosc10 in suppressing the P53 pathway, in which the rapid turnover of the apoptosis effectors Aen and Bbc3 mRNAs is essential for cell survival and normal cortical histogenesis.
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Affiliation(s)
- Pauline Antonie Ulmke
- University Medical Center, Georg-August- University Goettingen, Goettingen 37075, Germany
| | - Yuanbin Xie
- University Medical Center, Georg-August- University Goettingen, Goettingen 37075, Germany.,Department of Biochemistry and Molecular Biology, School of Basic Medical Science, Gannan Medical University, 341000 Ganzhou, The People's Republic of China
| | - Godwin Sokpor
- University Medical Center, Georg-August- University Goettingen, Goettingen 37075, Germany.,Department of Human Genetics, Ruhr University of Bochum, Bochum 44801, Germany
| | - Linh Pham
- University Medical Center, Georg-August- University Goettingen, Goettingen 37075, Germany.,Department of Human Genetics, Ruhr University of Bochum, Bochum 44801, Germany
| | - Orr Shomroni
- Microarray and Deep-Sequencing Core Facility, Georg-August- University Goettingen, Goettingen 37075, Germany
| | - Tea Berulava
- German Center for Neurodegenerative Diseases, Goettingen 37075, Germany
| | - Joachim Rosenbusch
- University Medical Center, Georg-August- University Goettingen, Goettingen 37075, Germany
| | - Uttiya Basu
- Department of Microbiology and Immunology, Vagelos College of Physicians and Surgeons, Columbia University, New York, NY 10032, USA
| | - Andre Fischer
- German Center for Neurodegenerative Diseases, Goettingen 37075, Germany.,Department for Psychiatry and Psychotherapy, University Medical Center, Georg-August-University Goettingen, Goettingen 37075, Germany.,Cluster of Excellence 'Multiscale Bioimaging: from Molecular Machines to Networks of Excitable Cells' (MBExC), University of Goettingen, Goettingen 37075, Germany
| | - Huu Phuc Nguyen
- Department of Human Genetics, Ruhr University of Bochum, Bochum 44801, Germany
| | - Jochen F Staiger
- University Medical Center, Georg-August- University Goettingen, Goettingen 37075, Germany
| | - Tran Tuoc
- University Medical Center, Georg-August- University Goettingen, Goettingen 37075, Germany .,Department of Human Genetics, Ruhr University of Bochum, Bochum 44801, Germany
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37
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Paraíso-Luna J, Aguareles J, Martín R, Ayo-Martín AC, Simón-Sánchez S, García-Rincón D, Costas-Insua C, García-Taboada E, de Salas-Quiroga A, Díaz-Alonso J, Liste I, Sánchez-Prieto J, Cappello S, Guzmán M, Galve-Roperh I. Endocannabinoid signalling in stem cells and cerebral organoids drives differentiation to deep layer projection neurons via CB 1 receptors. Development 2020; 147:226034. [PMID: 33168583 DOI: 10.1242/dev.192161] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [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: 04/28/2020] [Accepted: 11/03/2020] [Indexed: 12/19/2022]
Abstract
The endocannabinoid (eCB) system, via the cannabinoid CB1 receptor, regulates neurodevelopment by controlling neural progenitor proliferation and neurogenesis. CB1 receptor signalling in vivo drives corticofugal deep layer projection neuron development through the regulation of BCL11B and SATB2 transcription factors. Here, we investigated the role of eCB signalling in mouse pluripotent embryonic stem cell-derived neuronal differentiation. Characterization of the eCB system revealed increased expression of eCB-metabolizing enzymes, eCB ligands and CB1 receptors during neuronal differentiation. CB1 receptor knockdown inhibited neuronal differentiation of deep layer neurons and increased upper layer neuron generation, and this phenotype was rescued by CB1 re-expression. Pharmacological regulation with CB1 receptor agonists or elevation of eCB tone with a monoacylglycerol lipase inhibitor promoted neuronal differentiation of deep layer neurons at the expense of upper layer neurons. Patch-clamp analyses revealed that enhancing cannabinoid signalling facilitated neuronal differentiation and functionality. Noteworthy, incubation with CB1 receptor agonists during human iPSC-derived cerebral organoid formation also promoted the expansion of BCL11B+ neurons. These findings unveil a cell-autonomous role of eCB signalling that, via the CB1 receptor, promotes mouse and human deep layer cortical neuron development.
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Affiliation(s)
- Juan Paraíso-Luna
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.,Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | - José Aguareles
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.,Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | - Ricardo Martín
- Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | - Ane C Ayo-Martín
- Max Planck Institute of Psychiatry, 80804 Munich, Germany.,International Max Planck Research School for Translational Psychiatry (IMPRS-TP), 80804 Munich, Germany
| | - Samuel Simón-Sánchez
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.,Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | - Daniel García-Rincón
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.,Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | - Carlos Costas-Insua
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.,Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | - Elena García-Taboada
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.,Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | - Adán de Salas-Quiroga
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.,Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | - Javier Díaz-Alonso
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.,Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | - Isabel Liste
- Unidad de Regeneración Neural, Unidad Funcional de Investigación de Enfermedades Crónicas (UFIEC), Instituto de Salud Carlos III (ISCIII), 28220 Madrid, Spain
| | - José Sánchez-Prieto
- Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | | | - Manuel Guzmán
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.,Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
| | - Ismael Galve-Roperh
- Instituto Ramón y Cajal de Investigación Sanitaria (IRYCIS) and Centro de Investigación Biomédica en Red sobre Enfermedades Neurodegenerativas (CIBERNED), 28049 Madrid, Spain.,Department of Biochemistry and Molecular Biology, Complutense University, Instituto Universitario de Investigación en Neuroquímica (IUIN), 28040 Madrid, Spain
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38
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Negwer M, Piera K, Hesen R, Lütje L, Aarts L, Schubert D, Nadif Kasri N. EHMT1 regulates Parvalbumin-positive interneuron development and GABAergic input in sensory cortical areas. Brain Struct Funct 2020; 225:2701-2716. [PMID: 32975655 PMCID: PMC7674571 DOI: 10.1007/s00429-020-02149-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2020] [Accepted: 09/10/2020] [Indexed: 02/08/2023]
Abstract
Mutations in the Euchromatic Histone Methyltransferase 1 (EHMT1) gene cause Kleefstra syndrome, a rare form of intellectual disability (ID) with strong autistic traits and sensory processing deficits. Proper development of inhibitory interneurons is crucial for sensory function. Here we report a timeline of Parvalbumin-positive (PV+) interneuron development in the three most important sensory cortical areas in the Ehmt1+/- mouse. We find a hitherto unreported delay of PV+ neuron maturation early in sensory development, with layer- and region-specific variability later in development. The delayed PV+ maturation is also reflected in a delayed maturation of GABAergic transmission in Ehmt1+/- auditory cortex, where we find a reduced GABA release probability specifically in putative PV+ synapses. Together with earlier reports of excitatory impairments in Ehmt1+/- neurons, we propose a shift in excitatory-inhibitory balance towards overexcitability in Ehmt1+/- sensory cortices as a consequence of early deficits in inhibitory maturation.
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Affiliation(s)
- Moritz Negwer
- Department of Human Genetics, Radboudumc, Donders Institute for Brain, Cognition, and Behaviour, 6500 HB, Nijmegen, The Netherlands
| | - Karol Piera
- Department of Human Genetics, Radboudumc, Donders Institute for Brain, Cognition, and Behaviour, 6500 HB, Nijmegen, The Netherlands
| | - Rick Hesen
- Department of Human Genetics, Radboudumc, Donders Institute for Brain, Cognition, and Behaviour, 6500 HB, Nijmegen, The Netherlands
| | - Lukas Lütje
- Department of Human Genetics, Radboudumc, Donders Institute for Brain, Cognition, and Behaviour, 6500 HB, Nijmegen, The Netherlands
| | - Lynn Aarts
- Department of Human Genetics, Radboudumc, Donders Institute for Brain, Cognition, and Behaviour, 6500 HB, Nijmegen, The Netherlands
| | - Dirk Schubert
- Department of Cognitive Neuroscience, Radboudumc, Donders Institute for Brain, Cognition and Behaviour, 6500 HB, Nijmegen, The Netherlands
| | - Nael Nadif Kasri
- Department of Human Genetics, Radboudumc, Donders Institute for Brain, Cognition, and Behaviour, 6500 HB, Nijmegen, The Netherlands.
- Department of Cognitive Neuroscience, Radboudumc, Donders Institute for Brain, Cognition and Behaviour, 6500 HB, Nijmegen, The Netherlands.
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39
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Tian K, Wang A, Wang J, Li W, Shen W, Li Y, Luo Z, Liu Y, Zhou Y. Transcriptome Analysis Identifies SenZfp536, a Sense LncRNA that Suppresses Self-renewal of Cortical Neural Progenitors. Neurosci Bull 2020; 37:183-200. [PMID: 33196962 DOI: 10.1007/s12264-020-00607-2] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 11/28/2019] [Accepted: 08/12/2020] [Indexed: 11/28/2022] Open
Abstract
Long non-coding RNAs (lncRNAs) regulate transcription to control development and homeostasis in a variety of tissues and organs. However, their roles in the development of the cerebral cortex have not been well elucidated. Here, a bioinformatics pipeline was applied to delineate the dynamic expression and potential cis-regulating effects of mouse lncRNAs using transcriptome data from 8 embryonic time points and sub-regions of the developing cerebral cortex. We further characterized a sense lncRNA, SenZfp536, which is transcribed downstream of and partially overlaps with the protein-coding gene Zfp536. Both SenZfp536 and Zfp536 were predominantly expressed in the proliferative zone of the developing cortex. Zfp536 was cis-regulated by SenZfp536, which facilitates looping between the promoter of Zfp536 and the genomic region that transcribes SenZfp536. Surprisingly, knocking down or activating the expression of SenZfp536 increased or compromised the proliferation of cortical neural progenitor cells (NPCs), respectively. Finally, overexpressing Zfp536 in cortical NPCs reversed the enhanced proliferation of cortical NPCs caused by SenZfp536 knockdown. The study deepens our understanding of how lncRNAs regulate the propagation of cortical NPCs through cis-regulatory mechanisms.
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Affiliation(s)
- Kuan Tian
- College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Andi Wang
- College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Junbao Wang
- College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Wei Li
- College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Wenchen Shen
- College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Yamu Li
- College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Zhiyuan Luo
- College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China.,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China
| | - Ying Liu
- College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China. .,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China.
| | - Yan Zhou
- College of Life Sciences, Renmin Hospital of Wuhan University, Wuhan University, Wuhan, 430072, China. .,Frontier Science Center for Immunology and Metabolism, Medical Research Institute, School of Medicine, Wuhan University, Wuhan, 430071, China. .,Institute of Basic Medical Sciences, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100730, China.
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40
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Abstract
One class of molecules that are now coming to be recognized as essential for our understanding of the nervous system are the lysophospholipids. One of the major signaling lysophospholipids is lysophosphatidic acid, also known as LPA. LPA activates a variety of G protein-coupled receptors (GPCRs) leading to a multitude of physiological responses. In this review, I describe our current understanding of the role of LPA and LPA receptor signaling in the development and function of the nervous system, especially the central nervous system (CNS). In addition, I highlight how aberrant LPA receptor signaling may underlie neuropathological conditions, with important clinical application.
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Affiliation(s)
- Eric Birgbauer
- Department of Biology, Winthrop University, Rock Hill, SC, USA.
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41
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Baburamani AA, Vontell RT, Uus A, Pietsch M, Patkee PA, Wyatt-Ashmead J, Chin-Smith EC, Supramaniam VG, Donald Tournier J, Deprez M, Rutherford MA. Assessment of radial glia in the frontal lobe of fetuses with Down syndrome. Acta Neuropathol Commun 2020; 8:141. [PMID: 32819430 PMCID: PMC7441567 DOI: 10.1186/s40478-020-01015-3] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2020] [Accepted: 08/10/2020] [Indexed: 02/07/2023] Open
Abstract
Down syndrome (DS) occurs with triplication of human chromosome 21 and is associated with deviations in cortical development evidenced by simplified gyral appearance and reduced cortical surface area. Radial glia are neuronal and glial progenitors that also create a scaffolding structure essential for migrating neurons to reach cortical targets and therefore play a critical role in cortical development. The aim of this study was to characterise radial glial expression pattern and morphology in the frontal lobe of the developing human fetal brain with DS and age-matched controls. Secondly, we investigated whether microstructural information from in vivo magnetic resonance imaging (MRI) could reflect histological findings from human brain tissue samples. Immunohistochemistry was performed on paraffin-embedded human post-mortem brain tissue from nine fetuses and neonates with DS (15-39 gestational weeks (GW)) and nine euploid age-matched brains (18-39 GW). Radial glia markers CRYAB, HOPX, SOX2, GFAP and Vimentin were assessed in the Ventricular Zone, Subventricular Zone and Intermediate Zone. In vivo diffusion MRI was used to assess microstructure in these regions in one DS (21 GW) and one control (22 GW) fetal brain. We found a significant reduction in radial glial progenitor SOX2 and subtle deviations in radial glia expression (GFAP and Vimentin) prior to 24 GW in DS. In vivo, fetal MRI demonstrates underlying radial projections consistent with immunohistopathology. Radial glial alterations may contribute to the subsequent simplified gyral patterns and decreased cortical volumes observed in the DS brain. Recent advances in fetal MRI acquisition and analysis could provide non-invasive imaging-based biomarkers of early developmental deviations.
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Affiliation(s)
- Ana A. Baburamani
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
| | - Regina T. Vontell
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
- University of Miami Brain Endowment Bank, Miami, FL 33136 USA
| | - Alena Uus
- Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
| | - Maximilian Pietsch
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
- Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
| | - Prachi A. Patkee
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
| | - Jo Wyatt-Ashmead
- Neuropathology and Pediatric-Perinatal Pathology Service [NaPPPS], Holly Springs, MS 38635 USA
| | - Evonne C. Chin-Smith
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
| | - Veena G. Supramaniam
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
| | - J. Donald Tournier
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
- Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
| | - Maria Deprez
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
- Department of Biomedical Engineering, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
| | - Mary A. Rutherford
- Centre for the Developing Brain, School of Biomedical Engineering and Imaging Sciences, King’s College London, London, SE1 7EH UK
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42
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Mesman S, Bakker R, Smidt MP. Tcf4 is required for correct brain development during embryogenesis. Mol Cell Neurosci 2020; 106:103502. [PMID: 32474139 DOI: 10.1016/j.mcn.2020.103502] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 11/05/2019] [Revised: 04/28/2020] [Accepted: 05/19/2020] [Indexed: 01/02/2023] Open
Abstract
Tcf4 has been linked to autism, schizophrenia, and Pitt-Hopkins Syndrome (PTHS) in humans, suggesting a role for Tcf4 in brain development and importantly cortical development. However, the mechanisms behind its role in disease and brain development are still elusive. We provide evidence that Tcf4 has a critical function in the differentiation of cortical regions, corpus callosum and anterior commissure formation, and development of the hippocampus during murine embryonic development. In the present study, we show that Tcf4 is expressed throughout the developing brain at the peak of neurogenesis. Deletion of Tcf4 results in mis-specification of the cortical neurons, malformation of the corpus callosum and anterior commissure, and hypoplasia of the hippocampus. Furthermore, the Tcf4 mutant shows an absence of midline remodeling, underlined by the loss of GFAP-expressing midline glia in the indusium griseum and callosal wedge and midline zipper glia in the telencephalic midline. RNA-sequencing on E14.5 cortex material shows that Tcf4 functions as a transcriptional activator and loss of Tcf4 results in downregulation of genes linked to neurogenesis and neuronal maturation. Furthermore, many genes that are differentially expressed after Tcf4 ablation are linked to other neurodevelopmental disorders. Taken together, we show that correct brain development and neuronal differentiation are severely affected in Tcf4 mutants, phenocopying morphological brain defects detected in PTHS patients. The presented data identifies new leads to understand the mechanisms behind brain and specifically cortical development and can provide novel insights in developmental mechanisms underlying human brain defects.
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Affiliation(s)
- Simone Mesman
- Swammerdam Institute for Life Sciences, FNWI University of Amsterdam, Science Park 904, 1098XH Amsterdam, the Netherlands
| | - Reinier Bakker
- Swammerdam Institute for Life Sciences, FNWI University of Amsterdam, Science Park 904, 1098XH Amsterdam, the Netherlands
| | - Marten P Smidt
- Swammerdam Institute for Life Sciences, FNWI University of Amsterdam, Science Park 904, 1098XH Amsterdam, the Netherlands.
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43
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Dori M, Cavalli D, Lesche M, Massalini S, Alieh LHA, de Toledo BC, Khudayberdiev S, Schratt G, Dahl A, Calegari F. MicroRNA profiling of mouse cortical progenitors and neurons reveals miR-486-5p as a regulator of neurogenesis. Development 2020; 147:dev.190520. [PMID: 32273274 DOI: 10.1242/dev.190520] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [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: 03/11/2020] [Accepted: 03/26/2020] [Indexed: 12/12/2022]
Abstract
MicroRNAs (miRNAs) are short (∼22 nt) single-stranded non-coding RNAs that regulate gene expression at the post-transcriptional level. Over recent years, many studies have extensively characterized the involvement of miRNA-mediated regulation in neurogenesis and brain development. However, a comprehensive catalog of cortical miRNAs expressed in a cell-specific manner in progenitor types of the developing mammalian cortex is still missing. Overcoming this limitation, here we exploited a double reporter mouse line previously validated by our group to allow the identification of the transcriptional signature of neurogenic commitment and provide the field with the complete atlas of miRNA expression in proliferating neural stem cells, neurogenic progenitors and newborn neurons during corticogenesis. By extending the currently known list of miRNAs expressed in the mouse brain by over twofold, our study highlights the power of cell type-specific analyses for the detection of transcripts that would otherwise be diluted out when studying bulk tissues. We further exploited our data by predicting putative miRNAs and validated the power of our approach by providing evidence for the involvement of miR-486 in brain development.
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Affiliation(s)
- Martina Dori
- CRTD - Center for Regenerative Therapies Dresden, School of Medicine, TU Dresden, Fetcherstrasse 105, 01307 Dresden, Germany
| | - Daniel Cavalli
- CRTD - Center for Regenerative Therapies Dresden, School of Medicine, TU Dresden, Fetcherstrasse 105, 01307 Dresden, Germany
| | - Mathias Lesche
- DRESDEN-concept Genome Center c/o Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Fetcherstrasse 105, 01307 Dresden, Germany
| | - Simone Massalini
- CRTD - Center for Regenerative Therapies Dresden, School of Medicine, TU Dresden, Fetcherstrasse 105, 01307 Dresden, Germany
| | - Leila Haj Abdullah Alieh
- CRTD - Center for Regenerative Therapies Dresden, School of Medicine, TU Dresden, Fetcherstrasse 105, 01307 Dresden, Germany
| | - Beatriz Cardoso de Toledo
- CRTD - Center for Regenerative Therapies Dresden, School of Medicine, TU Dresden, Fetcherstrasse 105, 01307 Dresden, Germany
| | - Sharof Khudayberdiev
- Institute for Physiological Chemistry, Biochemical-Pharmacological Center Marburg, Philipps-University of Marburg, Karl-von-Frisch-Strasse 2, 35043 Marburg, Germany
| | - Gerhard Schratt
- Institute for Physiological Chemistry, Biochemical-Pharmacological Center Marburg, Philipps-University of Marburg, Karl-von-Frisch-Strasse 2, 35043 Marburg, Germany
| | - Andreas Dahl
- DRESDEN-concept Genome Center c/o Center for Molecular and Cellular Bioengineering (CMCB), Technische Universität Dresden, Fetcherstrasse 105, 01307 Dresden, Germany
| | - Federico Calegari
- CRTD - Center for Regenerative Therapies Dresden, School of Medicine, TU Dresden, Fetcherstrasse 105, 01307 Dresden, Germany
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44
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Chui A, Zhang Q, Dai Q, Shi SH. Oxidative stress regulates progenitor behavior and cortical neurogenesis. Development 2020; 147:dev.184150. [PMID: 32041791 DOI: 10.1242/dev.184150] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [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: 08/22/2019] [Accepted: 01/17/2020] [Indexed: 12/13/2022]
Abstract
Orderly division of radial glial progenitors (RGPs) in the developing mammalian cerebral cortex generates deep and superficial layer neurons progressively. However, the mechanisms that control RGP behavior and precise neuronal output remain elusive. Here, we show that the oxidative stress level progressively increases in the developing mouse cortex and regulates RGP behavior and neurogenesis. As development proceeds, numerous gene pathways linked to reactive oxygen species (ROS) and oxidative stress exhibit drastic changes in RGPs. Selective removal of PRDM16, a transcriptional regulator highly expressed in RGPs, elevates ROS level and induces expression of oxidative stress-responsive genes. Coinciding with an enhanced level of oxidative stress, RGP behavior was altered, leading to abnormal deep and superficial layer neuron generation. Simultaneous expression of mitochondrially targeted catalase to reduce cellular ROS levels significantly suppresses cortical defects caused by PRDM16 removal. Together, these findings suggest that oxidative stress actively regulates RGP behavior to ensure proper neurogenesis in the mammalian cortex.
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Affiliation(s)
- Angela Chui
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA .,Neuroscience Graduate Program, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA
| | - Qiangqiang Zhang
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA
| | - Qi Dai
- Department of Molecular Biosciences, The Wenner-Gren Institute, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Song-Hai Shi
- Developmental Biology Program, Sloan Kettering Institute, Memorial Sloan Kettering Cancer Center, 1275 York Avenue, New York, NY 10065, USA .,Neuroscience Graduate Program, Weill Cornell Medical College, 1300 York Avenue, New York, NY 10065, USA.,IDG/McGovern Institute for Brain Research, Tsinghua-Peking Center for Life Sciences, Beijing Frontier Center of Biological Molecules, School of Life Sciences, Tsinghua University, Beijing 100084, China
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45
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Karaca E, Li X, Lewicki J, Neofytou C, Guérout N, Barnabé-Heider F, Hermanson O. The corepressor CtBP2 is required for proper development of the mouse cerebral cortex. Mol Cell Neurosci 2020; 104:103481. [PMID: 32169478 DOI: 10.1016/j.mcn.2020.103481] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [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: 09/20/2019] [Revised: 03/05/2020] [Accepted: 03/09/2020] [Indexed: 12/21/2022] Open
Abstract
The development of the cerebral cortex depends on numerous parameters, including extracellular cues and microenvironmental factors that also affect gene expression. C-Terminal Binding Proteins (CtBPs) 1 and 2 are transcriptional co-repressors which have been shown to be critically involved in embryonic development. CtBPs are oxygen sensing molecules, and we have previously demonstrated an important role for CtBP1 in integrating oxygen levels and BMP-signaling to influence neural progenitor fate choice. In turn, CtBP2 has been associated with neurodevelopment and neurological disease, and we have shown that CtBP2 acetylation and dimerization, required for proper transcriptional activity, are regulated by microenvironmental oxygen levels. Yet, the putative function of CtBP2 in mammalian cortical development and neurogenesis in vivo is still largely unknown. Here we show that CtBP2 was widely expressed by neural stem and progenitor cells (NSPCs) as well as neurons during cortical development in mice. By using in utero electroporation of siRNA to reduce the levels of CtBP2 mRNA and protein in the developing mouse brain, we found that the NSPC proliferation and migration were largely perturbed, while glial differentiation under these conditions remained unchanged. Our study provides evidence that CtBP2 is required for the maintenance and migration of the NSPCs during mouse cortical development.
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Affiliation(s)
- Esra Karaca
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Cardiothoracic Surgery, Stanford University, California, USA.
| | - Xiaofei Li
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden; Department of Neurobiology, Care Sciences and Society, Karolinska Institutet, Stockholm, Sweden
| | - Jakub Lewicki
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden
| | | | - Nicolas Guérout
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden; Normandie Université, UNIROUEN, EA3830 GRHV, Institute for Research and Innovation in Biomedicine (IRIB), Rouen, France
| | | | - Ola Hermanson
- Department of Neuroscience, Karolinska Institutet, Stockholm, Sweden.
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46
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Welp A, Gembicki M, Rody A, Weichert J. Validation of a semiautomated volumetric approach for fetal neurosonography using 5DCNS+ in clinical data from > 1100 consecutive pregnancies. Childs Nerv Syst 2020; 36:2989-2995. [PMID: 32350601 PMCID: PMC7649164 DOI: 10.1007/s00381-020-04607-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Accepted: 04/02/2020] [Indexed: 11/30/2022]
Abstract
OBJECTIVE The aim of this study was to evaluate the validity of a semiautomated volumetric approach (5DCNS+) for the detailed assessment of the fetal brain in a clinical setting. METHODS Stored 3D volumes of > 1100 consecutive 2nd and 3rd trimester pregnancies (range 15-36 gestational weeks) were analyzed using a workflow-based volumetric approach 5DCNS+, enabling semiautomated reconstruction of diagnostic planes of the fetal central nervous system (CNS). All 3D data sets were examined for plane accuracy, the need for manual adjustment, and fetal-maternal characteristics affecting successful plane reconstruction. We also examined the potential of these standardized views to give additional information on proper gyration and sulci formation with advancing gestation. RESULTS Based on our data, we were able to show that gestational age with an OR of 1.085 (95% CI 1.041-1.132) and maternal BMI with an OR of 1.022 (95% CI 1.041-1.054) only had a slight impact on the number of manual adjustments needed to reconstruct the complete volume, while maternal age and fetal position during acquisition (p = 0.260) did not have a significant effect. For the vast majority (958/1019; 94%) of volumes, using 5DCNS+ resulted in proper reconstruction of all nine diagnostic planes. In less than 1% (89/9171 planes) of volumes, the program failed to give sufficient information. 5DCNS+ was able to show the onset and changing appearance of CNS folding in a detailed and timely manner (lateral/parietooccipital sulcus formation seen in < 65% at 16-17 gestational weeks vs. 94.6% at 19 weeks). CONCLUSIONS The 5DCNS+ method provides a reliable algorithm to produce detailed, 3D volume-based assessments of fetal CNS integrity through a standardized reconstruction of the orthogonal diagnostic planes. The method further gives valid and reproducible information regarding ongoing cortical development retrieved from these volume sets that might aid in earlier in utero recognition of subtle structural CNS anomalies.
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Affiliation(s)
- Amrei Welp
- Department of Obstetrics and Gynecology, Division of Prenatal Medicine, University Hospital of Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany
| | - Michael Gembicki
- Department of Obstetrics and Gynecology, Division of Prenatal Medicine, University Hospital of Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany
| | - Achim Rody
- Department of Obstetrics and Gynecology, Division of Prenatal Medicine, University Hospital of Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538 Luebeck, Germany
| | - Jan Weichert
- Department of Obstetrics and Gynecology, Division of Prenatal Medicine, University Hospital of Schleswig-Holstein, Campus Luebeck, Ratzeburger Allee 160, 23538, Luebeck, Germany.
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47
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Abstract
Development of the central nervous system (CNS) is a complex, dynamic process that involves a precisely orchestrated sequence of genetic, environmental, biochemical, and physical factors from early embryonic stages to postnatal life. Duringthe past decade, great strides have been made to unravel mechanisms underlying human CNS development through the employment of modern genetic techniques and experimental approaches. In this chapter, we review the current knowledge regarding the main developmental processes and signaling mechanisms of (i) neurogenesis, (ii) neuronal migration, and (iii) axon guidance. We discuss mechanisms related to neural stem cells proliferation, migration, terminal translocation of neuronal progenitors, and axon guidance and pathfinding. For each section, we also provide a comprehensive overview of the underlying regulatory processes, including transcriptional, posttranscriptional, and epigenetic factors, and a myriad of signaling pathways that are pivotal to determine the fate of neuronal progenitors and newly formed migrating neurons. We further highlight how impairment of this complex regulating system, such as mutations in its core components, may cause cortical malformation, epilepsy, intellectual disability, and autism in humans. A thorough understanding of normal human CNS development is thus crucial to decipher mechanisms responsible for neurodevelopmental disorders and in turn guide the development of effective and targeted therapeutic strategies.
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Affiliation(s)
- Andrea Accogli
- Unit of Medical Genetics, Istituto Giannina Gaslini Pediatric Hospital, Genova, Italy; Departments of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal-Child Science, Università degli Studi di Genova, Genova, Italy
| | | | - Myriam Srour
- Research Institute, McGill University Health Centre, Montreal, QC, Canada; Department of Pediatrics, Division of Pediatric Neurology, McGill University, Montreal, QC, Canada.
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48
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Benamer N, Vidal M, Angulo MC. The cerebral cortex is a substrate of multiple interactions between GABAergic interneurons and oligodendrocyte lineage cells. Neurosci Lett 2019; 715:134615. [PMID: 31711979 DOI: 10.1016/j.neulet.2019.134615] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [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: 06/28/2019] [Revised: 10/30/2019] [Accepted: 11/04/2019] [Indexed: 01/02/2023]
Abstract
In the cerebral cortex, GABAergic interneurons and oligodendrocyte lineage cells share different characteristics and interact despite being neurons and glial cells, respectively. These two distinct cell types share common embryonic origins and are born from precursors expressing similar transcription factors. Moreover, they highly interact with each other through different communication mechanisms during development. Notably, cortical oligodendrocyte precursor cells (OPCs) receive a major and transient GABAergic synaptic input, preferentially from parvalbumin-expressing interneurons, a specific interneuron subtype recently recognized as highly myelinated. In this review, we highlight the similarities and interactions between GABAergic interneurons and oligodendrocyte lineage cells in the cerebral cortex and suggest potential roles of this intimate interneuron-oligodendroglia relationship in cortical construction. We also propose new lines of research to understand the role of the close link between interneurons and oligodendroglia during cortical development and in pathological conditions such as schizophrenia.
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Affiliation(s)
- Najate Benamer
- Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, Paris, France; Université de Paris, Paris, France
| | - Marie Vidal
- Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, Paris, France; Université de Paris, Paris, France
| | - Maria Cecilia Angulo
- Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, Paris, France; Université de Paris, Paris, France.
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49
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Meier S, Alfonsi F, Kurniawan ND, Milne MR, Kasherman MA, Delogu A, Piper M, Coulson EJ. The p75 neurotrophin receptor is required for the survival of neuronal progenitors and normal formation of the basal forebrain, striatum, thalamus and neocortex. Development 2019; 146:dev.181933. [PMID: 31488566 DOI: 10.1242/dev.181933] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [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: 06/25/2019] [Accepted: 08/19/2019] [Indexed: 11/20/2022]
Abstract
During development, the p75 neurotrophin receptor (p75NTR) is widely expressed in the nervous system where it regulates neuronal differentiation, migration and axonal outgrowth. p75NTR also mediates the survival and death of newly born neurons, with functional outcomes being dependent on both timing and cellular context. Here, we show that knockout of p75NTR from embryonic day 10 (E10) in neural progenitors using a conditional Nestin-Cre p75NTR floxed mouse causes increased apoptosis of progenitor cells. By E14.5, the number of Tbr2-positive progenitor cells was significantly reduced and the rate of neurogenesis was halved. Furthermore, in adult knockout mice, there were fewer cortical pyramidal neurons, interneurons, cholinergic basal forebrain neurons and striatal neurons, corresponding to a relative reduction in volume of these structures. Thalamic midline fusion during early postnatal development was also impaired in Nestin-Cre p75NTR floxed mice, indicating a novel role for p75NTR in the formation of this structure. The phenotype of this strain demonstrates that p75NTR regulates multiple aspects of brain development, including cortical progenitor cell survival, and that expression during early neurogenesis is required for appropriate formation of telencephalic structures.
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Affiliation(s)
- Sonja Meier
- Queensland Brain Institute, The University of Queensland, 4072 Brisbane, Australia
| | - Fabienne Alfonsi
- Queensland Brain Institute, The University of Queensland, 4072 Brisbane, Australia
| | - Nyoman D Kurniawan
- Centre for Advanced Imaging, The University of Queensland, 4072 Brisbane, Australia
| | - Michael R Milne
- School of Biomedical Sciences, The University of Queensland, 4072 Brisbane, Australia
| | - Maria A Kasherman
- Griffith Institute for Drug Discovery, Griffith University, 4122 Brisbane, Australia
| | - Alessio Delogu
- Department of Basic and Clinical Neuroscience, Institute of Psychiatry, Psychology and Neuroscience, Kings College, London SE5 9RX, UK
| | - Michael Piper
- Queensland Brain Institute, The University of Queensland, 4072 Brisbane, Australia
| | - Elizabeth J Coulson
- Queensland Brain Institute, The University of Queensland, 4072 Brisbane, Australia .,School of Biomedical Sciences, The University of Queensland, 4072 Brisbane, Australia
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50
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Matsumura K, Baba M, Nagayasu K, Yamamoto K, Kondo M, Kitagawa K, Takemoto T, Seiriki K, Kasai A, Ago Y, Hayata-Takano A, Shintani N, Kuriu T, Iguchi T, Sato M, Takuma K, Hashimoto R, Hashimoto H, Nakazawa T. Autism-associated protein kinase D2 regulates embryonic cortical neuron development. Biochem Biophys Res Commun 2019; 519:626-632. [PMID: 31540692 DOI: 10.1016/j.bbrc.2019.09.048] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [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: 09/10/2019] [Accepted: 09/12/2019] [Indexed: 12/26/2022]
Abstract
Autism spectrum disorder (ASD) is a heterogeneous neurodevelopmental disorder, characterized by impaired social interaction, repetitive behavior and restricted interests. Although the molecular etiology of ASD remains largely unknown, recent studies have suggested that de novo mutations are significantly involved in the risk of ASD. We and others recently identified spontaneous de novo mutations in PKD2, a protein kinase D family member, in sporadic ASD cases. However, the biological significance of the de novo PKD2 mutations and the role of PKD2 in brain development remain unclear. Here, we performed functional analysis of PKD2 in cortical neuron development using in utero electroporation. PKD2 is highly expressed in cortical neural stem cells in the developing cortex and regulates cortical neuron development, including the neuronal differentiation of neural stem cells and migration of newborn neurons. Importantly, we determined that the ASD-associated de novo mutations impair the kinase activity of PKD2, suggesting that the de novo PKD2 mutations can be a risk factor for the disease by loss of function of PKD2. Our current findings provide novel insight into the molecular and cellular pathogenesis of ASD.
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Affiliation(s)
- Kensuke Matsumura
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan; Interdisciplinary Program for Biomedical Sciences, Institute for Transdisciplinary Graduate Degree Programs, Osaka University, Suita, Osaka, 565-0871, Japan; Research Fellowships for Young Scientists of the Japan Society for the Promotion of Science, Chiyoda-ku, Tokyo, 102-0083, Japan
| | - Masayuki Baba
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Kazuki Nagayasu
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Kana Yamamoto
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Momoka Kondo
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Kohei Kitagawa
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Tomoya Takemoto
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Kaoru Seiriki
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan; Interdisciplinary Program for Biomedical Sciences, Institute for Transdisciplinary Graduate Degree Programs, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Atsushi Kasai
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Yukio Ago
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan; Laboratory of Biopharmaceutics, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Atsuko Hayata-Takano
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan; United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Suita, Osaka, 565-0871, Japan
| | - Norihito Shintani
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Toshihiko Kuriu
- Osaka Medical College, Research and Development Center, Takatsuki, Osaka, 569-8686, Japan
| | - Tokuichi Iguchi
- Department of Anatomy and Neuroscience, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Makoto Sato
- United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Suita, Osaka, 565-0871, Japan; Department of Anatomy and Neuroscience, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan; Research Center for Child Mental Development, University of Fukui, Yoshida-gun, Fukui, 910-1193, Japan
| | - Kazuhiro Takuma
- United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Suita, Osaka, 565-0871, Japan; Department of Pharmacology, Graduate School of Dentistry, Osaka University, Suita, Osaka, 565-0871, Japan
| | - Ryota Hashimoto
- Department of Pathology of Mental Diseases, National Institute of Mental Health, National Center of Neurology and Psychiatry, Kodaira, Tokyo, 187-8553, Japan; Osaka University, Suita, Osaka, 565-0871, Japan
| | - Hitoshi Hashimoto
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan; United Graduate School of Child Development, Osaka University, Kanazawa University, Hamamatsu University School of Medicine, Chiba University and University of Fukui, Suita, Osaka, 565-0871, Japan; Division of Bioscience, Institute for Datability Science, Osaka University, Suita, Osaka, 565-0871, Japan; Transdimensional Life Imaging Division, Institute for Open and Transdisciplinary Research Initiatives, Osaka University, Suita, Osaka, 565-0871, Japan; Department of Molecular Pharmaceutical Science, Graduate School of Medicine, Osaka University, Suita, Osaka, 565-0871, Japan.
| | - Takanobu Nakazawa
- Laboratory of Molecular Neuropharmacology, Graduate School of Pharmaceutical Sciences, Osaka University, Suita, Osaka, 565-0871, Japan; Department of Pharmacology, Graduate School of Dentistry, Osaka University, Suita, Osaka, 565-0871, Japan.
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