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WDFY3 mutation alters laminar position and morphology of cortical neurons / Zachary A. SCHAAF in Molecular Autism, 13 (2022)
[article]
Titre : WDFY3 mutation alters laminar position and morphology of cortical neurons Type de document : Texte imprimé et/ou numérique Auteurs : Zachary A. SCHAAF, Auteur ; Lyvin TAT, Auteur ; Noemi CANNIZZARO, Auteur ; Ralph GREEN, Auteur ; Thomas RULICKE, Auteur ; Simon HIPPENMEYER, Auteur ; Konstantinos S. ZARBALIS, Auteur Article en page(s) : 27 p. Langues : Anglais (eng) Mots-clés : Adaptor Proteins, Signal Transducing/genetics Animals Autistic Disorder/genetics Autophagy-Related Proteins/genetics Cerebral Cortex/cytology Humans Mice Mutation Neurogenesis/genetics Neurons/cytology Cerebral cortex Dendrites Dendritic spines Excitatory neurons Neuronal migration Wdfy3 Index. décimale : PER Périodiques Résumé : BACKGROUND: Proper cerebral cortical development depends on the tightly orchestrated migration of newly born neurons from the inner ventricular and subventricular zones to the outer cortical plate. Any disturbance in this process during prenatal stages may lead to neuronal migration disorders (NMDs), which can vary in extent from focal to global. Furthermore, NMDs show a substantial comorbidity with other neurodevelopmental disorders, notably autism spectrum disorders (ASDs). Our previous work demonstrated focal neuronal migration defects in mice carrying loss-of-function alleles of the recognized autism risk gene WDFY3. However, the cellular origins of these defects in Wdfy3 mutant mice remain elusive and uncovering it will provide critical insight into WDFY3-dependent disease pathology. METHODS: Here, in an effort to untangle the origins of NMDs in Wdfy3(lacZ) mice, we employed mosaic analysis with double markers (MADM). MADM technology enabled us to genetically distinctly track and phenotypically analyze mutant and wild-type cells concomitantly in vivo using immunofluorescent techniques. RESULTS: We revealed a cell autonomous requirement of WDFY3 for accurate laminar positioning of cortical projection neurons and elimination of mispositioned cells during early postnatal life. In addition, we identified significant deviations in dendritic arborization, as well as synaptic density and morphology between wild type, heterozygous, and homozygous Wdfy3 mutant neurons in Wdfy3-MADM reporter mice at postnatal stages. LIMITATIONS: While Wdfy3 mutant mice have provided valuable insight into prenatal aspects of ASD pathology that remain inaccessible to investigation in humans, like most animal models, they do not a perfectly replicate all aspects of human ASD biology. The lack of human data makes it indeterminate whether morphological deviations described here apply to ASD patients or some of the other neurodevelopmental conditions associated with WDFY3 mutation. CONCLUSIONS: Our genetic approach revealed several cell autonomous requirements of WDFY3 in neuronal development that could underlie the pathogenic mechanisms of WDFY3-related neurodevelopmental conditions. The results are also consistent with findings in other ASD animal models and patients and suggest an important role for WDFY3 in regulating neuronal function and interconnectivity in postnatal life. En ligne : http://dx.doi.org/10.1186/s13229-022-00508-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=491
in Molecular Autism > 13 (2022) . - 27 p.[article] WDFY3 mutation alters laminar position and morphology of cortical neurons [Texte imprimé et/ou numérique] / Zachary A. SCHAAF, Auteur ; Lyvin TAT, Auteur ; Noemi CANNIZZARO, Auteur ; Ralph GREEN, Auteur ; Thomas RULICKE, Auteur ; Simon HIPPENMEYER, Auteur ; Konstantinos S. ZARBALIS, Auteur . - 27 p.
Langues : Anglais (eng)
in Molecular Autism > 13 (2022) . - 27 p.
Mots-clés : Adaptor Proteins, Signal Transducing/genetics Animals Autistic Disorder/genetics Autophagy-Related Proteins/genetics Cerebral Cortex/cytology Humans Mice Mutation Neurogenesis/genetics Neurons/cytology Cerebral cortex Dendrites Dendritic spines Excitatory neurons Neuronal migration Wdfy3 Index. décimale : PER Périodiques Résumé : BACKGROUND: Proper cerebral cortical development depends on the tightly orchestrated migration of newly born neurons from the inner ventricular and subventricular zones to the outer cortical plate. Any disturbance in this process during prenatal stages may lead to neuronal migration disorders (NMDs), which can vary in extent from focal to global. Furthermore, NMDs show a substantial comorbidity with other neurodevelopmental disorders, notably autism spectrum disorders (ASDs). Our previous work demonstrated focal neuronal migration defects in mice carrying loss-of-function alleles of the recognized autism risk gene WDFY3. However, the cellular origins of these defects in Wdfy3 mutant mice remain elusive and uncovering it will provide critical insight into WDFY3-dependent disease pathology. METHODS: Here, in an effort to untangle the origins of NMDs in Wdfy3(lacZ) mice, we employed mosaic analysis with double markers (MADM). MADM technology enabled us to genetically distinctly track and phenotypically analyze mutant and wild-type cells concomitantly in vivo using immunofluorescent techniques. RESULTS: We revealed a cell autonomous requirement of WDFY3 for accurate laminar positioning of cortical projection neurons and elimination of mispositioned cells during early postnatal life. In addition, we identified significant deviations in dendritic arborization, as well as synaptic density and morphology between wild type, heterozygous, and homozygous Wdfy3 mutant neurons in Wdfy3-MADM reporter mice at postnatal stages. LIMITATIONS: While Wdfy3 mutant mice have provided valuable insight into prenatal aspects of ASD pathology that remain inaccessible to investigation in humans, like most animal models, they do not a perfectly replicate all aspects of human ASD biology. The lack of human data makes it indeterminate whether morphological deviations described here apply to ASD patients or some of the other neurodevelopmental conditions associated with WDFY3 mutation. CONCLUSIONS: Our genetic approach revealed several cell autonomous requirements of WDFY3 in neuronal development that could underlie the pathogenic mechanisms of WDFY3-related neurodevelopmental conditions. The results are also consistent with findings in other ASD animal models and patients and suggest an important role for WDFY3 in regulating neuronal function and interconnectivity in postnatal life. En ligne : http://dx.doi.org/10.1186/s13229-022-00508-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=491 Wnt signaling networks in autism spectrum disorder and intellectual disability / V. KWAN in Journal of Neurodevelopmental Disorders, 8-1 (December 2016)
[article]
Titre : Wnt signaling networks in autism spectrum disorder and intellectual disability Type de document : Texte imprimé et/ou numérique Auteurs : V. KWAN, Auteur ; B. K. UNDA, Auteur ; K. K. SINGH, Auteur Article en page(s) : p.45 Langues : Anglais (eng) Mots-clés : Asd Autism spectrum disorders Gsk3 Mutations Neurodevelopment Neurogenesis Neuronal migration Neurotransmission Plasticity Signaling Synapse Wnt signaling Index. décimale : PER Périodiques Résumé : BACKGROUND: Genetic factors play a major role in the risk for neurodevelopmental disorders such as autism spectrum disorders (ASDs) and intellectual disability (ID). The underlying genetic factors have become better understood in recent years due to advancements in next generation sequencing. These studies have uncovered a vast number of genes that are impacted by different types of mutations (e.g., de novo, missense, truncation, copy number variations). ABSTRACT: Given the large volume of genetic data, analyzing each gene on its own is not a feasible approach and will take years to complete, let alone attempt to use the information to develop novel therapeutics. To make sense of independent genomic data, one approach is to determine whether multiple risk genes function in common signaling pathways that identify signaling "hubs" where risk genes converge. This approach has led to multiple pathways being implicated, such as synaptic signaling, chromatin remodeling, alternative splicing, and protein translation, among many others. In this review, we analyze recent and historical evidence indicating that multiple risk genes, including genes denoted as high-confidence and likely causal, are part of the Wingless (Wnt signaling) pathway. In the brain, Wnt signaling is an evolutionarily conserved pathway that plays an instrumental role in developing neural circuits and adult brain function. CONCLUSIONS: We will also review evidence that pharmacological therapies and genetic mouse models further identify abnormal Wnt signaling, particularly at the synapse, as being disrupted in ASDs and contributing to disease pathology. En ligne : http://dx.doi.org/10.1186/s11689-016-9176-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=349
in Journal of Neurodevelopmental Disorders > 8-1 (December 2016) . - p.45[article] Wnt signaling networks in autism spectrum disorder and intellectual disability [Texte imprimé et/ou numérique] / V. KWAN, Auteur ; B. K. UNDA, Auteur ; K. K. SINGH, Auteur . - p.45.
Langues : Anglais (eng)
in Journal of Neurodevelopmental Disorders > 8-1 (December 2016) . - p.45
Mots-clés : Asd Autism spectrum disorders Gsk3 Mutations Neurodevelopment Neurogenesis Neuronal migration Neurotransmission Plasticity Signaling Synapse Wnt signaling Index. décimale : PER Périodiques Résumé : BACKGROUND: Genetic factors play a major role in the risk for neurodevelopmental disorders such as autism spectrum disorders (ASDs) and intellectual disability (ID). The underlying genetic factors have become better understood in recent years due to advancements in next generation sequencing. These studies have uncovered a vast number of genes that are impacted by different types of mutations (e.g., de novo, missense, truncation, copy number variations). ABSTRACT: Given the large volume of genetic data, analyzing each gene on its own is not a feasible approach and will take years to complete, let alone attempt to use the information to develop novel therapeutics. To make sense of independent genomic data, one approach is to determine whether multiple risk genes function in common signaling pathways that identify signaling "hubs" where risk genes converge. This approach has led to multiple pathways being implicated, such as synaptic signaling, chromatin remodeling, alternative splicing, and protein translation, among many others. In this review, we analyze recent and historical evidence indicating that multiple risk genes, including genes denoted as high-confidence and likely causal, are part of the Wingless (Wnt signaling) pathway. In the brain, Wnt signaling is an evolutionarily conserved pathway that plays an instrumental role in developing neural circuits and adult brain function. CONCLUSIONS: We will also review evidence that pharmacological therapies and genetic mouse models further identify abnormal Wnt signaling, particularly at the synapse, as being disrupted in ASDs and contributing to disease pathology. En ligne : http://dx.doi.org/10.1186/s11689-016-9176-3 Permalink : https://www.cra-rhone-alpes.org/cid/opac_css/index.php?lvl=notice_display&id=349