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Rossi M, Banskota N, Shin CH, Anerillas C, Tsitsipatis D, Yang JH, Munk R, Martindale J, Yang X, Piao Y, Mazan-Mamczarz K, Fan J, Lehrmann E, Lam KW, De S, Abdelmohsen K, Gorospe M. Increased PTCHD4 expression via m6A modification of PTCHD4 mRNA promotes senescent cell survival. Nucleic Acids Res 2024; 52:7261-7278. [PMID: 38721764 PMCID: PMC11229380 DOI: 10.1093/nar/gkae322] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2023] [Revised: 03/27/2024] [Accepted: 04/12/2024] [Indexed: 07/09/2024] Open
Abstract
RNA modifications, including N6-methyladenosine (m6A), critically modulate protein expression programs in a range of cellular processes. Although the transcriptomes of cells undergoing senescence are strongly regulated, the landscape and impact of m6A modifications during senescence are poorly understood. Here, we report a robust m6A modification of PTCHD4 mRNA, encoding Patched Domain-Containing Protein 4, in senescent cells. The METTL3/METTL14 complex was found to incorporate the m6A modification on PTCHD4 mRNA; addition of m6A rendered PTCHD4 mRNA more stable and increased PTCHD4 production. MeRIP RT-qPCR and eCLIP analyses were used to map this m6A modification to the last exon of PTCHD4 mRNA. Further investigation identified IGF2BP1, but not other m6A readers, as responsible for the stabilization and increased abundance of m6A-modified PTCHD4 mRNA. Silencing PTCHD4, a transmembrane protein, enhanced growth arrest and DNA damage in pre-senescent cells and sensitized them to senolysis and apoptosis. Our results indicate that m6A modification of PTCHD4 mRNA increases the production of PTCHD4, a protein associated with senescent cell survival, supporting the notion that regulating m6A modification on specific mRNAs could be exploited to eliminate senescent cells for therapeutic benefit.
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Affiliation(s)
- Martina Rossi
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Nirad Banskota
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Chang Hoon Shin
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Carlos Anerillas
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Dimitrios Tsitsipatis
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Jen-Hao Yang
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
- Institute of Biomedical Sciences, National Sun Yat-sen University, Kaohsiung, Taiwan
| | - Rachel Munk
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Jennifer L Martindale
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Xiaoling Yang
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Yulan Piao
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Krystyna Mazan-Mamczarz
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Jinshui Fan
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Elin Lehrmann
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Kwan-Wood Gabriel Lam
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Supriyo De
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Kotb Abdelmohsen
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
| | - Myriam Gorospe
- Laboratory of Genetics and Genomics, National Institute on Aging (NIA) Intramural Research Program (IRP), National Institutes of Health (NIH), Baltimore, MD, USA
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2
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Yuan X, Wang Y, Li X, Zhong S, Zhou D, Lin X, Fang H, Yang Y, Wang M. Loss-of-function mutation in DDX53 associated with hereditary spastic paraplegia-like disorder. J Mol Med (Berl) 2024; 102:913-926. [PMID: 38753040 DOI: 10.1007/s00109-024-02454-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 04/30/2024] [Accepted: 05/03/2024] [Indexed: 06/29/2024]
Abstract
DEAD-box helicase 53 (DDX53) is a member of the DEAD-box protein family of RNA helicases. Unlike other family members that are responsible for RNA metabolism, the biological function of DDX53 and its impact on the human condition are unclear. Herein, we found a full-length DDX53 deletion mutation in a hereditary spastic paraplegia-like (HSP-like) patient with lower extremity spasticity, walking disorder, visual impairment, and lateral ventricular white matter lesions. Bioinformatic analysis revealed that DDX53 was mainly expressed in the cerebellar cortex and may function as a tissue-specific RNA helicase. Transcriptome analysis showed that the expression of multiple brain-associated genes involved in synapse organization, neuron function, and neuromuscular junctions was affected by DDX53 depletion. Moreover, RNA immunoprecipitation sequencing (RIP-seq) analysis showed that DDX53 interacted with 176 genes, and 96 of these genes were associated with the execution of neurofunction, particularly in the regulation of cell projection organization and nervous system development. Collectively, although a more specified cell or animal model is required to fully understand the functional role of DDX53 in the human brain, we report for the first time that the patient with DDX53 defects exhibits HSP-like symptoms and that DDX53 is essential for maintaining neuronal function, with loss-of-function mutation in DDX53 potentially leading to HSP due to impaired RNA metabolism in the nervous system. KEY MESSAGES: DDX53 deficiency was first reported to be associated with HSP disorder. DDX53 exhibited minimal impact on mitochondrial function. DDX53 impaired RNA metabolism in the nervous system.
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Affiliation(s)
- Xiangshu Yuan
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Ya Wang
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Xiyuan Li
- Baylor Genetics, Houston, TX, 77030, USA
| | - Sheng Zhong
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Danyi Zhou
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Xianlong Lin
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China
| | - Hezhi Fang
- Key Laboratory of Laboratory Medicine, Ministry of Education, Zhejiang Provincial Key Laboratory of Medical Genetics, School of Laboratory Medicine and Life Sciences, Wenzhou Medical University, Wenzhou, 325035, Zhejiang, China.
| | - Yanling Yang
- Department of Pediatrics, Peking University First Hospital, Beijing, 100034, China.
| | - Maofeng Wang
- Department of Biomedical Sciences Laboratory, Affiliated Dongyang Hospital of Wenzhou Medical University, Dongyang, 322100, Zhejiang, China.
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3
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Weng Y, Zhou S, Morillo K, Kaletsky R, Lin S, Murphy CT. The neuron-specific IIS/FOXO transcriptome in aged animals reveals regulatory mechanisms of cognitive aging. eLife 2024; 13:RP95621. [PMID: 38922671 PMCID: PMC11208049 DOI: 10.7554/elife.95621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024] Open
Abstract
Cognitive decline is a significant health concern in our aging society. Here, we used the model organism C. elegans to investigate the impact of the IIS/FOXO pathway on age-related cognitive decline. The daf-2 Insulin/IGF-1 receptor mutant exhibits a significant extension of learning and memory span with age compared to wild-type worms, an effect that is dependent on the DAF-16 transcription factor. To identify possible mechanisms by which aging daf-2 mutants maintain learning and memory with age while wild-type worms lose neuronal function, we carried out neuron-specific transcriptomic analysis in aged animals. We observed downregulation of neuronal genes and upregulation of transcriptional regulation genes in aging wild-type neurons. By contrast, IIS/FOXO pathway mutants exhibit distinct neuronal transcriptomic alterations in response to cognitive aging, including upregulation of stress response genes and downregulation of specific insulin signaling genes. We tested the roles of significantly transcriptionally-changed genes in regulating cognitive functions, identifying novel regulators of learning and memory. In addition to other mechanistic insights, a comparison of the aged vs young daf-2 neuronal transcriptome revealed that a new set of potentially neuroprotective genes is upregulated; instead of simply mimicking a young state, daf-2 may enhance neuronal resilience to accumulation of harm and take a more active approach to combat aging. These findings suggest a potential mechanism for regulating cognitive function with age and offer insights into novel therapeutic targets for age-related cognitive decline.
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Affiliation(s)
- Yifei Weng
- Department of Molecular Biology, Princeton UniversityPrincetonUnited States
| | - Shiyi Zhou
- Department of Molecular Biology, Princeton UniversityPrincetonUnited States
| | - Katherine Morillo
- Department of Molecular Biology, Princeton UniversityPrincetonUnited States
| | - Rachel Kaletsky
- Department of Molecular Biology, Princeton UniversityPrincetonUnited States
- Princeton UniversityPrincetonUnited States
| | - Sarah Lin
- Department of Molecular Biology, Princeton UniversityPrincetonUnited States
| | - Coleen T Murphy
- Department of Molecular Biology, Princeton UniversityPrincetonUnited States
- Princeton UniversityPrincetonUnited States
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Hauw JJ, Hausser-Hauw C, Barthélémy C. Synapse and primary cilia dysfunctions in Autism Spectrum Disorders. Avenues to normalize these functions. Rev Neurol (Paris) 2024:S0035-3787(24)00555-1. [PMID: 38925998 DOI: 10.1016/j.neurol.2024.06.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 05/28/2024] [Accepted: 06/04/2024] [Indexed: 06/28/2024]
Abstract
AIM An update on the plasticity of the brain networks involved in autism (autism spectrum disorders [ASD]), and the increasing role of their synapses and primary non-motile cilia. METHODS Data from PubMed and Google on this subject, published until February 2024, were analyzed. RESULTS Structural and functional brain characteristics and genetic particularities involving synapses and cilia that modify neuronal circuits are observed in ASD, such as reduced pruning of dendrites, minicolumnar pathology, or persistence of connections usually doomed to disappear. Proteins involved in synapse functions (such as neuroligins and neurexins), in the postsynaptic architectural scaffolding (such as Shank proteins) or in cilia functions (such as IFT-independent kinesins) are often abnormal. There is an increase in glutaminergic transmission and a decrease in GABA inhibition. ASD may occur in genetic ciliopathies. The means of modulating these specificities, when deemed useful, are described. INTERPRETATION The wide range of clinical manifestations of ASD is strongly associated with abnormalities in the morphology, functions, and plasticity of brain networks, involving their synapses and non-motile cilia. Their modulation offers important research perspectives on treatments when needed, especially since brain plasticity persists much later than previously thought. Improved early detection of ASD and additional studies on synapses and primary cilia are needed.
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Affiliation(s)
- J-J Hauw
- Académie nationale de médecine, 16, rue Bonaparte, 75272 Paris cedex 06, France; Laboratoire de neuropathologie Raymond-Escourolle, hôpital universitaire Pitié-Salpêtrière, Paris, France.
| | | | - C Barthélémy
- Académie nationale de médecine, 16, rue Bonaparte, 75272 Paris cedex 06, France; Faculté de médecine, université de Tours, Tours, France; GIS Autisme et troubles du neurodéveloppement, Paris, France
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5
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Bamford RA, Zuko A, Eve M, Sprengers JJ, Post H, Taggenbrock RLRE, Fäβler D, Mehr A, Jones OJR, Kudzinskas A, Gandawijaya J, Müller UC, Kas MJH, Burbach JPH, Oguro-Ando A. CNTN4 modulates neural elongation through interplay with APP. Open Biol 2024; 14:240018. [PMID: 38745463 PMCID: PMC11293442 DOI: 10.1098/rsob.240018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Revised: 03/01/2024] [Accepted: 03/04/2024] [Indexed: 05/16/2024] Open
Abstract
The neuronal cell adhesion molecule contactin-4 (CNTN4) is genetically associated with autism spectrum disorder (ASD) and other psychiatric disorders. Cntn4-deficient mouse models have previously shown that CNTN4 plays important roles in axon guidance and synaptic plasticity in the hippocampus. However, the pathogenesis and functional role of CNTN4 in the cortex has not yet been investigated. Our study found a reduction in cortical thickness in the motor cortex of Cntn4 -/- mice, but cortical cell migration and differentiation were unaffected. Significant morphological changes were observed in neurons in the M1 region of the motor cortex, indicating that CNTN4 is also involved in the morphology and spine density of neurons in the motor cortex. Furthermore, mass spectrometry analysis identified an interaction partner for CNTN4, confirming an interaction between CNTN4 and amyloid-precursor protein (APP). Knockout human cells for CNTN4 and/or APP revealed a relationship between CNTN4 and APP. This study demonstrates that CNTN4 contributes to cortical development and that binding and interplay with APP controls neural elongation. This is an important finding for understanding the physiological function of APP, a key protein for Alzheimer's disease. The binding between CNTN4 and APP, which is involved in neurodevelopment, is essential for healthy nerve outgrowth.
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Affiliation(s)
- Rosemary A. Bamford
- University of Exeter Medical School, University of Exeter, ExeterEX2 5DW, UK
| | - Amila Zuko
- Department of Molecular Neurobiology, Donders Institute for Brain, Cognition and Behaviour and Faculty of Science, Radboud University, Nijmegen, The Netherlands
| | - Madeline Eve
- University of Exeter Medical School, University of Exeter, ExeterEX2 5DW, UK
| | - Jan J. Sprengers
- Department of Translational Neuroscience, UMC Utrecht Brain Center, UMC Utrecht, Utrecht3508 AB, The Netherlands
| | - Harm Post
- Biomolecular Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular Research and Utrecht, Institute for Pharmaceutical Sciences, Utrecht University, Utrecht, The Netherlands
- Netherlands Proteomics Centre, Utrecht, The Netherlands
| | - Renske L. R. E. Taggenbrock
- Department of Translational Neuroscience, UMC Utrecht Brain Center, UMC Utrecht, Utrecht3508 AB, The Netherlands
| | - Dominique Fäβler
- Institute for Pharmacy and Molecular Biotechnology (IPMB), Functional Genomics, University of Heidelberg, Heidelberg69120, Germany
| | - Annika Mehr
- Institute for Pharmacy and Molecular Biotechnology (IPMB), Functional Genomics, University of Heidelberg, Heidelberg69120, Germany
| | - Owen J. R. Jones
- University of Exeter Medical School, University of Exeter, ExeterEX2 5DW, UK
| | - Aurimas Kudzinskas
- University of Exeter Medical School, University of Exeter, ExeterEX2 5DW, UK
| | - Josan Gandawijaya
- University of Exeter Medical School, University of Exeter, ExeterEX2 5DW, UK
| | - Ulrike C. Müller
- Institute for Pharmacy and Molecular Biotechnology (IPMB), Functional Genomics, University of Heidelberg, Heidelberg69120, Germany
| | - Martien J. H. Kas
- Department of Translational Neuroscience, UMC Utrecht Brain Center, UMC Utrecht, Utrecht3508 AB, The Netherlands
- Groningen Institute for Evolutionary Life Sciences, University of Groningen, Groningen, The Netherlands
| | - J. Peter H. Burbach
- Department of Translational Neuroscience, UMC Utrecht Brain Center, UMC Utrecht, Utrecht3508 AB, The Netherlands
| | - Asami Oguro-Ando
- University of Exeter Medical School, University of Exeter, ExeterEX2 5DW, UK
- Department of Pharmacy, Faculty of Pharmaceutical Sciences, Tokyo University of Science, Noda, Chiba, Japan
- Research Institute for Science and Technology, Tokyo University of Science, Tokyo, Japan
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6
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Huang J, Song C, Liu Y, Zhang T, Wang T, Liu X, Yu L. Epigenetic regulation by KDM5A mediates the effects of prenatal PM 2.5 exposure on hippocampal development and synaptic integrity through the Shh signaling pathway. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2024; 276:116311. [PMID: 38615639 DOI: 10.1016/j.ecoenv.2024.116311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/06/2024] [Revised: 03/21/2024] [Accepted: 04/07/2024] [Indexed: 04/16/2024]
Abstract
Prenatal environmental exposure could be an essential health risk factor associated with neurodevelopmental disorders in offspring. However, the exact mechanisms underlying the impact of prenatal PM2.5 exposure on offspring cognition remain unclear. In our recent study using a PM2.5 exposed pregnant mouse model, we observed significant synaptic dysfunction in the hippocampi of the offspring. Concurrently, the epigenetic regulator of KDM5A and the Shh signaling pathway exhibited decreased activities. Significantly, changes in hippocampal KDM5A and Shh levels directly correlated with PM2.5 exposure intensity. Subsequent experiments revealed a marked reduction in the expression of Shh signaling and related synaptic proteins when KDM5A was silenced in cells. Notably, the effects of KDM5A deficiency were reversed significantly with the supplementation of a Shh activator. Furthermore, our findings indicate that Shh activation significantly attenuates PM2.5-induced synaptic impairments in hippocampal neurons. We further demonstrated that EGR1, a transcriptional inhibitor, plays a direct role in KDM5A's regulation of the Shh pathway under conditions of PM2.5 exposure. Our results suggest that the KDM5A's inhibitory regulation on the Shh pathway through the EGR1 gene is a crucial epigenetic mechanism underlying the synaptic dysfunction in hippocampal neurons caused by maternal PM2.5 exposure. This emphasizes the role of epigenetic regulations in neurodevelopmental disorders caused by environmental factors.
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Affiliation(s)
- Jia Huang
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China
| | - Chao Song
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China
| | - Yongping Liu
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China
| | - Tianliang Zhang
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China
| | - Tingting Wang
- Department of Pharmacy, Zhongnan Hospital of Wuhan University, School of Pharmaceutical Sciences, Wuhan University, Wuhan 430071, China
| | - Xinqi Liu
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China
| | - Li Yu
- School of Basic Medicine, Experimental Center for Medical Research, Neurologic Disorders and Regeneration Repair Lab of Shandong Higher Education, Shandong Second Medical University, Weifang 261053, China.
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Ung DC, Pietrancosta N, Badillo EB, Raux B, Tapken D, Zlatanovic A, Doridant A, Pode-Shakked B, Raas-Rothschild A, Elpeleg O, Abu-Libdeh B, Hamed N, Papon MA, Marouillat S, Thépault RA, Stevanin G, Elegheert J, Letellier M, Hollmann M, Lambolez B, Tricoire L, Toutain A, Hepp R, Laumonnier F. GRID1/GluD1 homozygous variants linked to intellectual disability and spastic paraplegia impair mGlu1/5 receptor signaling and excitatory synapses. Mol Psychiatry 2024; 29:1205-1215. [PMID: 38418578 PMCID: PMC11176079 DOI: 10.1038/s41380-024-02469-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/09/2022] [Revised: 01/23/2024] [Accepted: 01/30/2024] [Indexed: 03/01/2024]
Abstract
The ionotropic glutamate delta receptor GluD1, encoded by the GRID1 gene, is involved in synapse formation, function, and plasticity. GluD1 does not bind glutamate, but instead cerebellin and D-serine, which allow the formation of trans-synaptic bridges, and trigger transmembrane signaling. Despite wide expression in the nervous system, pathogenic GRID1 variants have not been characterized in humans so far. We report homozygous missense GRID1 variants in five individuals from two unrelated consanguineous families presenting with intellectual disability and spastic paraplegia, without (p.Thr752Met) or with (p.Arg161His) diagnosis of glaucoma, a threefold phenotypic association whose genetic bases had not been elucidated previously. Molecular modeling and electrophysiological recordings indicated that Arg161His and Thr752Met mutations alter the hinge between GluD1 cerebellin and D-serine binding domains and the function of this latter domain, respectively. Expression, trafficking, physical interaction with metabotropic glutamate receptor mGlu1, and cerebellin binding of GluD1 mutants were not conspicuously altered. Conversely, upon expression in neurons of dissociated or organotypic slice cultures, we found that both GluD1 mutants hampered metabotropic glutamate receptor mGlu1/5 signaling via Ca2+ and the ERK pathway and impaired dendrite morphology and excitatory synapse density. These results show that the clinical phenotypes are distinct entities segregating in the families as an autosomal recessive trait, and caused by pathophysiological effects of GluD1 mutants involving metabotropic glutamate receptor signaling and neuronal connectivity. Our findings unravel the importance of GluD1 receptor signaling in sensory, cognitive and motor functions of the human nervous system.
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Affiliation(s)
- Dévina C Ung
- UMR 1253, iBrain, Université de Tours, Inserm, 37032, Tours, France
| | - Nicolas Pietrancosta
- Sorbonne Université, INSERM, CNRS, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France
- Laboratoire des biomolécules, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005, Paris, France
| | | | - Brigitt Raux
- Univ. Bordeaux, CNRS, IINS, UMR 5297, F-33000, Bordeaux, France
| | - Daniel Tapken
- Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, D-44780, Bochum, Germany
| | - Andjela Zlatanovic
- Sorbonne Université, INSERM, CNRS, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France
| | - Adrien Doridant
- Univ. Bordeaux, CNRS, IINS, UMR 5297, F-33000, Bordeaux, France
| | - Ben Pode-Shakked
- The Institute for Rare Diseases, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel-Hahsomer, 5262000, Israel
- Talpiot Medical Leadership Program, Sheba Medical Center, Tel-Hashomer, 5262000, Israel
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, 69978, Israel
| | - Annick Raas-Rothschild
- The Institute for Rare Diseases, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel-Hahsomer, 5262000, Israel
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, 69978, Israel
| | - Orly Elpeleg
- Department of Genetics, Hadassah Medical Center, Jerusalem, Israel
- Faculty of Medicine, Hebrew University of Jerusalem, Jerusalem, Israel
| | - Bassam Abu-Libdeh
- Department of Pediatrics, Makassed Hospital and Faculty of Medicine, Al-Quds University, East Jerusalem, Jerusalem, Palestine
| | - Nasrin Hamed
- Faculty of Medicine, Tel-Aviv University, Tel-Aviv, 69978, Israel
- Pediatric Neurology Unit, Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Tel-Hahsomer, 5262000, Israel
| | | | | | | | - Giovanni Stevanin
- Univ. Bordeaux, INCIA, UMR 5287 CNRS EPHE, F-33000, Bordeaux, France
| | | | | | - Michael Hollmann
- Department of Biochemistry I - Receptor Biochemistry, Faculty of Chemistry and Biochemistry, Ruhr University Bochum, D-44780, Bochum, Germany
| | - Bertrand Lambolez
- Sorbonne Université, INSERM, CNRS, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France
| | - Ludovic Tricoire
- Sorbonne Université, INSERM, CNRS, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France
| | - Annick Toutain
- UMR 1253, iBrain, Université de Tours, Inserm, 37032, Tours, France.
- Unité fonctionnelle de Génétique Médicale, Centre Hospitalier Universitaire, 37044, Tours, France.
| | - Régine Hepp
- Sorbonne Université, INSERM, CNRS, Neuroscience Paris Seine - Institut de Biologie Paris Seine, 75005, Paris, France.
| | - Frédéric Laumonnier
- UMR 1253, iBrain, Université de Tours, Inserm, 37032, Tours, France.
- Service de Génétique, Centre Hospitalier Universitaire, 37044, Tours, France.
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8
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Egilmezer E, Hamilton ST, Foster CSP, Marschall M, Rawlinson WD. Human cytomegalovirus (CMV) dysregulates neurodevelopmental pathways in cerebral organoids. Commun Biol 2024; 7:340. [PMID: 38504123 PMCID: PMC10951402 DOI: 10.1038/s42003-024-05923-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Accepted: 02/16/2024] [Indexed: 03/21/2024] Open
Abstract
Human cytomegalovirus (CMV) infection is the leading non-genetic aetiology of congenital malformation in developed countries, causing significant fetal neurological injury. This study investigated potential CMV pathogenetic mechanisms of fetal neural malformation using in vitro human cerebral organoids. Cerebral organoids were permissive to CMV replication, and infection dysregulated cellular pluripotency and differentiation pathways. Aberrant expression of dual-specificity tyrosine phosphorylation-regulated kinases (DYRK), sonic hedgehog (SHH), pluripotency, neurodegeneration, axon guidance, hippo signalling and dopaminergic synapse pathways were observed in CMV-infected organoids using immunofluorescence and RNA-sequencing. Infection with CMV resulted in dysregulation of 236 Autism Spectrum Disorder (ASD)-related genes (p = 1.57E-05) and pathways. This notable observation suggests potential links between congenital CMV infection and ASD. Using DisGeNET databases, 103 diseases related to neural malformation or mental disorders were enriched in CMV-infected organoids. Cytomegalovirus infection-related dysregulation of key cerebral cellular pathways potentially provides important, modifiable pathogenetic mechanisms for congenital CMV-induced neural malformation and ASD.
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Affiliation(s)
- Ece Egilmezer
- Serology and Virology Division, Microbiology, NSW Health Pathology, Prince of Wales Hospital, Sydney, NSW, 2031, Australia
- School of Medical Science, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Stuart T Hamilton
- Serology and Virology Division, Microbiology, NSW Health Pathology, Prince of Wales Hospital, Sydney, NSW, 2031, Australia
- School of Clinical Medicine, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Charles S P Foster
- Serology and Virology Division, Microbiology, NSW Health Pathology, Prince of Wales Hospital, Sydney, NSW, 2031, Australia
- School of Medical Science, University of New South Wales, Sydney, NSW, 2052, Australia
| | - Manfred Marschall
- Institute for Clinical and Molecular Virology, Friedrich-Alexander University of Erlangen-Nürnberg, Erlangen, 91054, Germany
| | - William D Rawlinson
- Serology and Virology Division, Microbiology, NSW Health Pathology, Prince of Wales Hospital, Sydney, NSW, 2031, Australia.
- School of Medical Science, University of New South Wales, Sydney, NSW, 2052, Australia.
- School of Clinical Medicine, University of New South Wales, Sydney, NSW, 2052, Australia.
- School of Biotechnology and Biomolecular Sciences, University of New South Wales, Sydney, NSW, 2052, Australia.
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9
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Juan CX, Mao Y, Han X, Qian HY, Chu KK. EGR1 Regulates SHANK3 Transcription at Different Stages of Brain Development. Neuroscience 2024; 540:27-37. [PMID: 38218401 DOI: 10.1016/j.neuroscience.2024.01.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Revised: 01/04/2024] [Accepted: 01/09/2024] [Indexed: 01/15/2024]
Abstract
The expression levels of SHANK3 are associated with autism spectrum disorder (ASD). The dynamic changes in SHANK3 expression during different stages of brain development may impact the progression of ASD. However, no studies or detailed analyses exploring the upstream mechanisms that regulate SHANK3 expression have been reported. In this study, we employed immunofluorescence to examine the expression of SHANK3 in brain organoids at various stages. Our results revealed elevated levels of SHANK3 expression in brain-like organoids at Day 60. Additionally, we utilized bioinformatics software to predict and analyze the SHANK3 gene's transcription start site. Through the dual luciferase reporter gene technique, we identified core transcription elements within the SHANK3 promoter. Site-directed mutations were used to identify specific transcription sites of SHANK3. To determine the physical binding of potential transcription factors to the SHANK3 promoter, we employed electrophoretic mobility shift assay (EMSA) and chromatin immunoprecipitation (ChIP). Our findings demonstrated that the transcription factor EGR1 regulates SHANK3 expression by binding to the transcription site of the SHANK3 promoter. Although this study did not investigate the pathological phenotypes of human brain organoids or animal model brains with EGR1 deficiency, which could potentially substantiate the findings observed for SHANK3 mutants, our findings provide valuable insights into the relationship between the transcription factor, EGR1, and SHANK3. This study contributes to the molecular understanding of ASD and offers potential foundations for precise targeted therapy.
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Affiliation(s)
- Chen-Xia Juan
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210004, China; Child Mental Health Research Center, Affiliated Nanjing Brain Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Yan Mao
- Jiangsu Province Hospital of Chinese Medicine, Affiliated Hospital of Nanjing University of Chinese Medicine, Nanjing 210004, China
| | - Xiao Han
- Institute for Stem Cell and Neural Regeneration, School of Pharmacy, State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Hua-Ying Qian
- Child Mental Health Research Center, Affiliated Nanjing Brain Hospital, Nanjing Medical University, Nanjing 210029, China
| | - Kang-Kang Chu
- Child Mental Health Research Center, Affiliated Nanjing Brain Hospital, Nanjing Medical University, Nanjing 210029, China.
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10
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Xie CTY, Pastore SF, Vincent JB, Frankland PW, Hamel PA. Nonsynonymous Mutations in Intellectual Disability and Autism Spectrum Disorder Gene PTCHD1 Disrupt N-Glycosylation and Reduce Protein Stability. Cells 2024; 13:199. [PMID: 38275824 PMCID: PMC10814814 DOI: 10.3390/cells13020199] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/07/2023] [Revised: 01/14/2024] [Accepted: 01/17/2024] [Indexed: 01/27/2024] Open
Abstract
PTCHD1 has been implicated in Autism Spectrum Disorders (ASDs) and/or intellectual disability, where copy-number-variant losses or loss-of-function coding mutations segregate with disease in an X-linked recessive fashion. Missense variants of PTCHD1 have also been reported in patients. However, the significance of these mutations remains undetermined since the activities, subcellular localization, and regulation of the PTCHD1 protein are currently unknown. This paucity of data concerning PTCHD1 prevents the effective evaluation of sequence variants identified during diagnostic screening. Here, we characterize PTCHD1 protein binding partners, extending previously reported interactions with postsynaptic scaffolding protein, SAP102. Six rare missense variants of PTCHD1 were also identified from patients with neurodevelopmental disorders. After modelling these variants on a hypothetical three-dimensional structure of PTCHD1, based on the solved structure of NPC1, PTCHD1 variants harboring these mutations were assessed for protein stability, post-translational processing, and protein trafficking. We show here that the wild-type PTCHD1 post-translational modification includes complex N-glycosylation and that specific mutant proteins disrupt normal N-link glycosylation processing. However, regardless of their processing, these mutants still localized to PSD95-containing dendritic processes and remained competent for complexing SAP102.
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Affiliation(s)
- Connie T. Y. Xie
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Stephen F. Pastore
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON M5T 1RS, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON M5T 1R8, Canada
| | - John B. Vincent
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON M5T 1RS, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Psychiatry, University of Toronto, Toronto, ON M5T 1R8, Canada
| | - Paul W. Frankland
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada
- Program in Neurosciences and Mental Health, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada
- Department of Psychology, University of Toronto, Toronto, ON M5S 3G3, Canada
- Department of Physiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Paul A. Hamel
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada
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11
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Montanaro FAM, Mandarino A, Alesi V, Schwartz C, Sepulveda DJC, Skinner C, Friez M, Piccolo G, Novelli A, Zanni G, Dentici ML, Vicari S, Alfieri P. PTCHD1 gene mutation/deletion: the cognitive-behavioral phenotyping of four case reports. Front Psychiatry 2024; 14:1327802. [PMID: 38288059 PMCID: PMC10823004 DOI: 10.3389/fpsyt.2023.1327802] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 12/06/2023] [Indexed: 01/31/2024] Open
Abstract
Introduction X-linked PTCHD1 gene has recently been pointed as one of the most interesting candidates for involvement in neurodevelopmental disorders (NDs), such as intellectual disability (ID) and autism spectrum disorder (ASD). PTCHD1 encodes the patched domain-containing protein 1 (PTCHD1), which is mainly expressed in the developing brain and adult brain tissues. To date, major studies have focused on the biological function of the PTCHD1 gene, while the mechanisms underlying neuronal alterations and the cognitive-behavioral phenotype associated with mutations still remain unclear. Methods With the aim of incorporating information on the clinical profile of affected individuals and enhancing the characterization of the genotype-phenotype correlation, in this study, we analyze the clinical features of four individuals (two children and two adults) in which array-CGH detected a PTCHD1 deletion or in which panel for screening non-syndromal XLID (X-linked ID) detected a PTCHD1 gene variant. We define the neuropsychological and psychopathological profiles, providing quantitative data from standardized evaluations. The assessment consisted of clinical observations, structured interviews, and parent/self-reported questionnaires. Results Our descriptive analysis align with previous findings on the involvement of the PTCHD1 gene in NDs. Specifically, our patients exhibited a clinical phenotype characterized by psychomotor developmental delay- ID of varying severity. Interestingly, while ID during early childhood was associated with autistic-like symptomatology, this interrelation was no longer observed in the adult subjects. Furthermore, our cohort did not display peculiar dysmorphic features, congenital abnormalities or comorbidity with epilepsy. Discussion Our analysis shows that the psychopathological and behavioral comorbidities along with cognitive impairment interfere with development, therefore contributing to the severity of disability associated with PTCHD1 gene mutation. Awareness of this profile by professionals and caregivers can promote prompt diagnosis as well as early cognitive and occupational enhancement interventions.
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Affiliation(s)
- Federica Alice Maria Montanaro
- Child and Adolescent Neuropsychiatry Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Alessandra Mandarino
- Child and Adolescent Neuropsychiatry Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Viola Alesi
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Charles Schwartz
- Department of Pediatrics and Human Development, College of Human Medicine, Michigan State University, East Lansing, MI, United States
| | | | - Cindy Skinner
- Greenwood Genetic Center, Gregor Mendel Circle, Greenwood, SC, United States
| | - Michael Friez
- Greenwood Genetic Center, Gregor Mendel Circle, Greenwood, SC, United States
| | - Gabriele Piccolo
- Unit of Muscular and Neurodegenerative Disorders, Unit of Developmental Neurology, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Antonio Novelli
- Laboratory of Medical Genetics, Translational Cytogenomics Research Unit, Bambino Gesù Children Hospital, IRCCS, Rome, Italy
| | - Ginevra Zanni
- Unit of Muscular and Neurodegenerative Disorders, Unit of Developmental Neurology, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Maria Lisa Dentici
- Genetics and Rare Diseases Research Division, Bambino Gesù Children's Hospital, IRCCS, Rome, Italy
| | - Stefano Vicari
- Child and Adolescent Neuropsychiatry Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
| | - Paolo Alfieri
- Child and Adolescent Neuropsychiatry Unit, Department of Neuroscience, Bambino Gesù Children’s Hospital, IRCCS, Rome, Italy
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12
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Farley KO, Forbes CA, Shaw NC, Kuzminski E, Ward M, Baynam G, Lassmann T, Fear VS. CRISPR-Cas9-generated PTCHD1 2489T>G stem cells recapitulate patient phenotype when undergoing neural induction. HGG ADVANCES 2024; 5:100257. [PMID: 38007613 PMCID: PMC10787298 DOI: 10.1016/j.xhgg.2023.100257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 11/20/2023] [Accepted: 11/20/2023] [Indexed: 11/27/2023] Open
Abstract
An estimated 3.5%-5.9% of the global population live with rare diseases, and approximately 80% of these diseases have a genetic cause. Rare genetic diseases are difficult to diagnose, with some affected individuals experiencing diagnostic delays of 5-30 years. Next-generation sequencing has improved clinical diagnostic rates to 33%-48%. In a majority of cases, novel variants potentially causing the disease are discovered. These variants require functional validation in specialist laboratories, resulting in a diagnostic delay. In the interim, the finding is classified as a genetic variant of uncertain significance (VUS) and the affected individual remains undiagnosed. A VUS (PTCHD1 c. 2489T>G) was identified in a child with autistic behavior, global developmental delay, and hypotonia. Loss of function mutations in PTCHD1 are associated with autism spectrum disorder and intellectual disability; however, the molecular function of PTCHD1 and its role in neurodevelopmental disease is unknown. Here, we apply CRISPR gene editing and induced pluripotent stem cell (iPSC) neural disease modeling to assess the variant. During differentiation from iPSCs to neural progenitors, we detect subtle but significant gene signatures in synaptic transmission and muscle contraction pathways. Our work supports the causal link between the genetic variant and the child's phenotype, providing evidence for the variant to be considered a pathogenic variant according to the American College of Medical Genetics and Genomics guidelines. In addition, our study provides molecular data on the role of PTCHD1 in the context of other neurodevelopmental disorders.
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Affiliation(s)
- Kathryn O Farley
- Computational Biology, Precision Health, Telethon Kids Institute, Perth Children's Hospital, Nedlands, WA 6009, Australia; Translational Genetics, Precision Health, Telethon Kids Institute, Perth Children's Hospital, Nedlands, WA 6009, Australia; Centre for Child Health Research, University of Western Australia, Nedlands, WA 6009, Australia.
| | - Catherine A Forbes
- Translational Genetics, Precision Health, Telethon Kids Institute, Perth Children's Hospital, Nedlands, WA 6009, Australia
| | - Nicole C Shaw
- Translational Genetics, Precision Health, Telethon Kids Institute, Perth Children's Hospital, Nedlands, WA 6009, Australia
| | - Emma Kuzminski
- Translational Genetics, Precision Health, Telethon Kids Institute, Perth Children's Hospital, Nedlands, WA 6009, Australia; Centre for Child Health Research, University of Western Australia, Nedlands, WA 6009, Australia
| | - Michelle Ward
- Undiagnosed Diseases Program, Genetic Services of WA, Subiaco WA 6008, Australia
| | - Gareth Baynam
- Western Australian Register of Developmental Anomalies, King Edward Memorial Hospital, Subiaco, WA 6008, Australia; Undiagnosed Diseases Program, Genetic Services of WA, Subiaco WA 6008, Australia; Rare Care Centre, Perth Children's Hospital, Nedlands, WA 6009, Australia
| | - Timo Lassmann
- Computational Biology, Precision Health, Telethon Kids Institute, Perth Children's Hospital, Nedlands, WA 6009, Australia; Centre for Child Health Research, University of Western Australia, Nedlands, WA 6009, Australia
| | - Vanessa S Fear
- Translational Genetics, Precision Health, Telethon Kids Institute, Perth Children's Hospital, Nedlands, WA 6009, Australia; Centre for Child Health Research, University of Western Australia, Nedlands, WA 6009, Australia
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13
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Scala M, Bradley CA, Howe JL, Trost B, Salazar NB, Shum C, Reuter MS, MacDonald JR, Ko SY, Frankland PW, Granger L, Anadiotis G, Pullano V, Brusco A, Keller R, Parisotto S, Pedro HF, Lusk L, McDonnell PP, Helbig I, Mullegama SV, Douine ED, Russell BE, Nelson SF, Zara F, Scherer SW. Genetic variants in DDX53 contribute to Autism Spectrum Disorder associated with the Xp22.11 locus. MEDRXIV : THE PREPRINT SERVER FOR HEALTH SCIENCES 2023:2023.12.21.23300383. [PMID: 38234782 PMCID: PMC10793518 DOI: 10.1101/2023.12.21.23300383] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2024]
Abstract
Autism Spectrum Disorder (ASD) exhibits an ~4:1 male-to-female sex bias and is characterized by early-onset impairment of social/communication skills, restricted interests, and stereotyped behaviors. Disruption of the Xp22.11 locus has been associated with ASD in males. This locus includes the three-exon PTCHD1 gene, an adjacent multi-isoform long noncoding RNA (lncRNA) named PTCHD1-AS (spanning ~1Mb), and a poorly characterized single-exon RNA helicase named DDX53 that is intronic to PTCHD1-AS. While the relationship between PTCHD1/PTCHD1-AS and ASD is being studied, the role of DDX53 has not been examined, in part because there is no apparent functional murine orthologue. Through clinical testing, here, we identified 6 males and 1 female with ASD from 6 unrelated families carrying rare, predicted-damaging or loss-of-function variants in DDX53. Then, we examined databases, including the Autism Speaks MSSNG and Simons Foundation Autism Research Initiative, as well as population controls. We identified 24 additional individuals with ASD harboring rare, damaging DDX53 variations, including the same variants detected in two families from the original clinical analysis. In this extended cohort of 31 participants with ASD (28 male, 3 female), we identified 25 mostly maternally-inherited variations in DDX53, including 18 missense changes, 2 truncating variants, 2 in-frame variants, 2 deletions in the 3' UTR and 1 copy number deletion. Our findings in humans support a direct link between DDX53 and ASD, which will be important in clinical genetic testing. These same autism-related findings, coupled with the observation that a functional orthologous gene is not found in mouse, may also influence the design and interpretation of murine-modelling of ASD.
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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
| | - Clarrisa A. Bradley
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
- Program in Neurosciences and Mental Health, The Hospital for Sick Children and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Jennifer L. Howe
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Brett Trost
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Nelson Bautista Salazar
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Carole Shum
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Miriam S. Reuter
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Jeffrey R. MacDonald
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
| | - Sangyoon Y. Ko
- Program in Neurosciences and Mental Health, The Hospital for Sick Children and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - Paul W. Frankland
- Program in Neurosciences and Mental Health, The Hospital for Sick Children and Department of Physiology, University of Toronto, Toronto, Ontario, Canada
- Department of Psychology and Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Leslie Granger
- Department of Genetics and Metabolism, Randall Children’s Hospital, Portland, OR 97227, USA
| | - George Anadiotis
- Department of Genetics and Metabolism, Randall Children’s Hospital, Portland, OR 97227, USA
| | - Verdiana Pullano
- Department of Medical Sciences, University of Torino, Torino, Italy
| | - Alfredo Brusco
- Department of Neurosciences Rita Levi-Montalcini, University of Turin, 10126 Turin, Italy
- Medical Genetics Unit, Città della Salute e della Scienza University Hospital, Torino, Italy
| | - Roberto Keller
- Adult Autism Centre DSM ASL Città di Torino, 10138 Turin, Italy
| | - Sarah Parisotto
- Center for Genetic and Genomic Medicine, Hackensack University Medical Center, Hackensack, New Jersey, USA
| | - Helio F. Pedro
- Center for Genetic and Genomic Medicine, Hackensack University Medical Center, Hackensack, New Jersey, USA
| | - Laina Lusk
- Epilepsy Neurogenetics Initiative, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Division of Neurology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Department of Biomedical and Health Informatics (DBHi), Children’s Hospital of Philadelphia, Philadelphia, PA, USA
| | - Pamela Pojomovsky McDonnell
- Epilepsy Neurogenetics Initiative, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Division of Neurology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Department of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | - Ingo Helbig
- Epilepsy Neurogenetics Initiative, Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Division of Neurology, Children’s Hospital of Philadelphia, Philadelphia, PA 19104, USA
- Department of Biomedical and Health Informatics (DBHi), Children’s Hospital of Philadelphia, Philadelphia, PA, USA
- Department of Neurology, University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, USA
| | | | | | - Emilie D. Douine
- Department of Human Genetics, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA, USA
| | - Bianca E. Russell
- Department of Human Genetics, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA, USA
| | - Stanley F. Nelson
- Department of Human Genetics, David Geffen School of Medicine at University of California, Los Angeles, Los Angeles, CA, USA
| | - Federico Zara
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy
- UOC Genetica Medica, IRCCS Giannina Gaslini, Genoa, Italy
| | - Stephen W. Scherer
- The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, ON M5G 0A4, Canada
- Department of Molecular Genetics, University of Toronto, Toronto, ON M5S 1A8, Canada
- McLaughlin Centre, Toronto, ON M5G 0A4, Canada
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14
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Pastore SF, Muhammad T, Stan C, Frankland PW, Hamel PA, Vincent JB. Neuronal transcription of autism gene PTCHD1 is regulated by a conserved downstream enhancer sequence. Sci Rep 2023; 13:20391. [PMID: 37990104 PMCID: PMC10663455 DOI: 10.1038/s41598-023-46673-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Accepted: 11/03/2023] [Indexed: 11/23/2023] Open
Abstract
Patched domain-containing 1 (PTCHD1) is a well-established susceptibility gene for autism spectrum disorder (ASD) and intellectual disability (ID). Previous studies have suggested that alterations in the dosage of PTCHD1 may contribute to the etiology of both ASD and ID. However, there has not yet been a thorough investigation regarding mechanisms that regulate PTCHD1 expression. We sought to characterize the Ptchd1 promoter in a mouse neuronal model, as well as to identify and validate cis regulatory elements. We defined specific regions of the Ptchd1 promoter essential for robust expression in P19-induced neurons. Evolutionarily-conserved putative transcription factor binding sites within these regions were subsequently identified. Using a pairwise comparison of chromatin accessibility between mouse forebrain and liver tissues, a candidate regulatory region, ~ 9.1 kbp downstream of the Ptchd1 stop codon was defined. This region harbours two ENCODE-predicted enhancer cis-regulatory elements. Further, using DNase footprint analysis, a putative YY1-binding motif was also identified. Genomic deletion of the entire 8 kbp downstream open chromatin region attenuated Ptchd1 transcription by over 60% in our neuronal model, corroborating its predicted regulatory function. This study provides mechanistic insights related to the expression of PTCHD1, and provides important context to interpret genetic and genomic variation at this locus which may influence neurodevelopment.
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Affiliation(s)
- Stephen F Pastore
- Molecular Neuropsychiatry & Development (MiND) Lab, Molecular Brain Science Research Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, M5T 1RS, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, M5S 1A8, Canada
| | - Tahir Muhammad
- Molecular Neuropsychiatry & Development (MiND) Lab, Molecular Brain Science Research Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, M5T 1RS, Canada
- Institute of Medical Science, University of Toronto, Toronto, ON, M5S 1A8, Canada
| | - Cassandra Stan
- Molecular Neuropsychiatry & Development (MiND) Lab, Molecular Brain Science Research Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, M5T 1RS, Canada
| | - Paul W Frankland
- Institute of Medical Science, University of Toronto, Toronto, ON, M5S 1A8, Canada
- Program in Neurosciences and Mental Health, The Hospital for Sick Children, Toronto, ON, M5G 1X8, Canada
- Department of Physiology, University of Toronto, Toronto, ON, M5S 1A8, Canada
- Department of Psychology, University of Toronto, Toronto, ON, M5S 3G3, Canada
| | - Paul A Hamel
- Department of Laboratory Medicine & Pathobiology, University of Toronto, Toronto, ON, M5S 1A8, Canada
| | - John B Vincent
- Molecular Neuropsychiatry & Development (MiND) Lab, Molecular Brain Science Research Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, M5T 1RS, Canada.
- Institute of Medical Science, University of Toronto, Toronto, ON, M5S 1A8, Canada.
- Department of Psychiatry, University of Toronto, Toronto, ON, M5T 1R8, Canada.
- Molecular Brain Science Research Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health (CAMH), 250 College Street, Toronto, ON, M5T 1R8, Canada.
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15
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Cording KR, Bateup HS. Altered motor learning and coordination in mouse models of autism spectrum disorder. Front Cell Neurosci 2023; 17:1270489. [PMID: 38026686 PMCID: PMC10663323 DOI: 10.3389/fncel.2023.1270489] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2023] [Accepted: 09/25/2023] [Indexed: 12/01/2023] Open
Abstract
Autism spectrum disorder (ASD) is a complex neurodevelopmental disorder with increasing prevalence. Over 1,000 risk genes have now been implicated in ASD, suggesting diverse etiology. However, the diagnostic criteria for the disorder still comprise two major behavioral domains - deficits in social communication and interaction, and the presence of restricted and repetitive patterns of behavior (RRBs). The RRBs associated with ASD include both stereotyped repetitive movements and other motor manifestations including changes in gait, balance, coordination, and motor skill learning. In recent years, the striatum, the primary input center of the basal ganglia, has been implicated in these ASD-associated motor behaviors, due to the striatum's role in action selection, motor learning, and habit formation. Numerous mouse models with mutations in ASD risk genes have been developed and shown to have alterations in ASD-relevant behaviors. One commonly used assay, the accelerating rotarod, allows for assessment of both basic motor coordination and motor skill learning. In this corticostriatal-dependent task, mice walk on a rotating rod that gradually increases in speed. In the extended version of this task, mice engage striatal-dependent learning mechanisms to optimize their motor routine and stay on the rod for longer periods. This review summarizes the findings of studies examining rotarod performance across a range of ASD mouse models, and the resulting implications for the involvement of striatal circuits in ASD-related motor behaviors. While performance in this task is not uniform across mouse models, there is a cohort of models that show increased rotarod performance. A growing number of studies suggest that this increased propensity to learn a fixed motor routine may reflect a common enhancement of corticostriatal drive across a subset of mice with mutations in ASD-risk genes.
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Affiliation(s)
- Katherine R. Cording
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, United States
| | - Helen S. Bateup
- Helen Wills Neuroscience Institute, University of California, Berkeley, Berkeley, CA, United States
- Molecular and Cell Biology Department, University of California, Berkeley, Berkeley, CA, United States
- Chan Zuckerberg Biohub, San Francisco, CA, United States
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16
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Mashayekhi P, Omrani MD, Tonekaboni SH, Dehghanifard A. A novel de novo canonical splice site mutation in the PTCH1 gene in a male patient with mild psychomotor retardation and autistic traits: a case report. Hum Genome Var 2023; 10:26. [PMID: 37752108 PMCID: PMC10522635 DOI: 10.1038/s41439-023-00254-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2023] [Revised: 08/08/2023] [Accepted: 08/08/2023] [Indexed: 09/28/2023] Open
Abstract
Basal cell nevus syndrome (BCNS), or Gorlin syndrome, is a rare autosomal dominant disorder caused by mutations in the tumor suppressor gene PTCH1 with complete penetrance and variable expressivity characterized by a broad spectrum of developmental anomalies and a predisposition to neoplasms. Herein, we report a novel de novo splice site mutation in the PTCH1 gene related to mild developmental delay and autistic traits in a 4-year-old male patient.
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Affiliation(s)
- Parisa Mashayekhi
- Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
| | - Mir Davood Omrani
- Urogenital Stem Cell Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran.
| | - Seyed Hasan Tonekaboni
- Pediatric Neurology Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Ali Dehghanifard
- Molecular Medicine Department, Biotechnology Research Center, Pasteur Institute of Iran, Tehran, Iran
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17
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Wang G, Tang X, Zhao F, Qin X, Wang F, Yang D, Zhu H, Chen X. Total saponins from Trillium tschonoskii Maxim promote neurological recovery in model rats with post-stroke cognitive impairment. Front Pharmacol 2023; 14:1255560. [PMID: 37745057 PMCID: PMC10513410 DOI: 10.3389/fphar.2023.1255560] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2023] [Accepted: 08/21/2023] [Indexed: 09/26/2023] Open
Abstract
Total saponins from Trillium tschonoskii Maxim (TSTT), a bioactive component of local natural herbs in the Enshi area, China, have been demonstrated to have functions of restoring cognitive capacity and promoting axonal regeneration post-stroke, but the mechanism of this process remains unclear. The hippocampus is a critical tissue for controlling learning and memory capacity, and the sonic hedgehog (Shh) signaling pathway plays a major role in the patterning and synaptic plasticity of hippocampal neural circuits. Therefore, we aimed to investigate whether TSTT could restore learning and cognitive functions by modulating the Shh pathway in rats with post-stroke cognitive impairment (PSCI). The ischemia model was established by permanent middle cerebral artery occlusion (MCAO) in 100 Sprague-Dawley (SD) rats, and the model rats were administered using TSTT (100 mg/kg) or donepezil hydrochloride as the positive control (daily 0.45 mg/kg, DON) for 4 weeks after the operation. As assessed by the Morris water maze test, the cognitive function of PSCI rats was significantly improved upon TSTT treatment. Meanwhile, the cerebral infarct volume reduced with TSTT, as shown by HE and TTC staining, and the number of Nissl bodies and dendritic spine density were significantly increased, as shown by Nissl and Golgi staining. In addition, TSTT upregulated PSD-95, SYN, and GAP-43, and inhibited neuronal apoptosis, as evidenced by increased Bcl-2 levels along with decreased Bax and caspase-3 expression. TSTT could also significantly upregulate Shh, Ptch1, Smo, and Gli1 proteins, indicating the activation of the Shh signaling pathway. Therefore, TSTT can protect PSCI rats by inhibiting apoptosis and promoting neuronal synaptic remodeling. The Shh pathway is also involved.
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Affiliation(s)
- Gang Wang
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Xiane Tang
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Fangyu Zhao
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Xiaoli Qin
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Fengjie Wang
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Dan Yang
- Health Science Center, Hubei Minzu University, Enshi, China
| | - Hong Zhu
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
| | - Xianbing Chen
- Hubei Provincial Clinical Medical Research Center for Nephropathy, Minda Hospital of Hubei Minzu University, Enshi, China
- Health Science Center, Hubei Minzu University, Enshi, China
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18
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Gao C, Cao Y, He M, Zhang X, Zhong Q, Tang L, Chen T, Zhang Z. SAG treatment ameliorates memory impairment related to sleep loss by upregulating synaptic plasticity in adolescent mice. Behav Brain Res 2023; 450:114468. [PMID: 37148913 DOI: 10.1016/j.bbr.2023.114468] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2023] [Revised: 03/17/2023] [Accepted: 03/18/2023] [Indexed: 05/08/2023]
Abstract
Adequate sleep during the developmental stage can promote learning and memory functions because synaptic protein synthesis at primed synapses during sleep profoundly affects neurological function. The Sonic hedgehog (Shh) signaling pathway affects neuroplasticity in the hippocampus during the development of the central nervous system. In this study, the changes in synaptic morphology and function induced by sleep deprivation and the potential therapeutic effect of a Shh agonist (SAG) on these changes were investigated in adolescent mice. Adolescent mice were subjected to sleep deprivation for 20 hrs (2pm to 10 am the next day) and were free to sleep for the remaining 4 hrs per day for 10 consecutive days. Sleep-deprived mice were injected with SAG (10mg/kg body weight, i.p.) or saline (i.p.) every day 5min before the onset of the 20h sleep deprivation period. Chronic sleep deprivation impaired recognition and spatial memory, decreased the number of dendritic spines and mEPSCs of hippocampal CA1 pyramidal neurons, decreased the postsynaptic density, and reduced Shh and glioma-associated oncogene homolog 1 (Gli1) expression. SAG significantly protected against sleep deprivation-induced memory dysfunction, increased the CA1 pyramidal neuronal dendritic spine number and mEPSC frequency, and increased Gli1 expression. In conclusion, sleep deprivation induces memory impairment in adolescent mice, and SAG treatment prevents this impairment, probably by enhancing synaptic function in the hippocampal CA1 region.
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Affiliation(s)
- Chenyi Gao
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Yue Cao
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Mengying He
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Xuemin Zhang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Qi Zhong
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Lijuan Tang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China
| | - Ting Chen
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China.
| | - Zongze Zhang
- Department of Anesthesiology, Zhongnan Hospital of Wuhan University, Wuhan 430071, China.
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19
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Medina E, Peterson S, Ford K, Singletary K, Peixoto L. Critical periods and Autism Spectrum Disorders, a role for sleep. Neurobiol Sleep Circadian Rhythms 2023; 14:100088. [PMID: 36632570 PMCID: PMC9826922 DOI: 10.1016/j.nbscr.2022.100088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2022] [Revised: 12/16/2022] [Accepted: 12/19/2022] [Indexed: 12/24/2022] Open
Abstract
Brain development relies on both experience and genetically defined programs. Time windows where certain brain circuits are particularly receptive to external stimuli, resulting in heightened plasticity, are referred to as "critical periods". Sleep is thought to be essential for normal brain development. Importantly, studies have shown that sleep enhances critical period plasticity and promotes experience-dependent synaptic pruning in the developing mammalian brain. Therefore, normal plasticity during critical periods depends on sleep. Problems falling and staying asleep occur at a higher rate in Autism Spectrum Disorder (ASD) relative to typical development. In this review, we explore the potential link between sleep, critical period plasticity, and ASD. First, we review the importance of critical period plasticity in typical development and the role of sleep in this process. Next, we summarize the evidence linking ASD with deficits in synaptic plasticity in rodent models of high-confidence ASD gene candidates. We then show that the high-confidence rodent models of ASD that show sleep deficits also display plasticity deficits. Given how important sleep is for critical period plasticity, it is essential to understand the connections between synaptic plasticity, sleep, and brain development in ASD. However, studies investigating sleep or plasticity during critical periods in ASD mouse models are lacking. Therefore, we highlight an urgent need to consider developmental trajectory in studies of sleep and plasticity in neurodevelopmental disorders.
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Affiliation(s)
- Elizabeth Medina
- Department of Translational Medicine and Physiology, Sleep and Performance Research Center, Elson S. Floyd College of Medicine, Washington State University, Spokane, WA, United States
| | - Sarah Peterson
- Department of Translational Medicine and Physiology, Sleep and Performance Research Center, Elson S. Floyd College of Medicine, Washington State University, Spokane, WA, United States
| | - Kaitlyn Ford
- Department of Translational Medicine and Physiology, Sleep and Performance Research Center, Elson S. Floyd College of Medicine, Washington State University, Spokane, WA, United States
| | - Kristan Singletary
- Department of Translational Medicine and Physiology, Sleep and Performance Research Center, Elson S. Floyd College of Medicine, Washington State University, Spokane, WA, United States
| | - Lucia Peixoto
- Department of Translational Medicine and Physiology, Sleep and Performance Research Center, Elson S. Floyd College of Medicine, Washington State University, Spokane, WA, United States
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20
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Prajapati A, Mehan S, Khan Z. The role of Smo-Shh/Gli signaling activation in the prevention of neurological and ageing disorders. Biogerontology 2023:10.1007/s10522-023-10034-1. [PMID: 37097427 DOI: 10.1007/s10522-023-10034-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2023] [Accepted: 04/05/2023] [Indexed: 04/26/2023]
Abstract
Sonic hedgehog (Shh) signaling is an essential central nervous system (CNS) pathway involved during embryonic development and later life stages. Further, it regulates cell division, cellular differentiation, and neuronal integrity. During CNS development, Smo-Shh signaling is significant in the proliferation of neuronal cells such as oligodendrocytes and glial cells. The initiation of the downstream signalling cascade through the 7-transmembrane protein Smoothened (Smo) promotes neuroprotection and restoration during neurological disorders. The dysregulation of Smo-Shh is linked to the proteolytic cleavage of GLI (glioma-associated homolog) into GLI3 (repressor), which suppresses target gene expression, leading to the disruption of cell growth processes. Smo-Shh aberrant signalling is responsible for several neurological complications contributing to physiological alterations like increased oxidative stress, neuronal excitotoxicity, neuroinflammation, and apoptosis. Moreover, activating Shh receptors in the brain promotes axonal elongation and increases neurotransmitters released from presynaptic terminals, thereby exerting neurogenesis, anti-oxidation, anti-inflammatory, and autophagy responses. Smo-Shh activators have been shown in preclinical and clinical studies to help prevent various neurodegenerative and neuropsychiatric disorders. Redox signalling has been found to play a critical role in regulating the activity of the Smo-Shh pathway and influencing downstream signalling events. In the current study ROS, a signalling molecule, was also essential in modulating the SMO-SHH gli signaling pathway in neurodegeneration. As a result of this investigation, dysregulation of the pathway contributes to the pathogenesis of various neurodegenerative diseases, including Alzheimer's disease (AD), Parkinson's disease (PD), and Huntington's disease (HD).Thus, Smo-Shh signalling activators could be a potential therapeutic intervention to treat neurocomplications of brain disorders.
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Affiliation(s)
- Aradhana Prajapati
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
| | - Sidharth Mehan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India.
| | - Zuber Khan
- Division of Neuroscience, Department of Pharmacology, ISF College of Pharmacy, Moga, Punjab, 142001, India
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21
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Whole-Transcriptome Analysis Highlights Adenylyl Cyclase Toxins-Derived Modulation of NF-κB and ERK1/2 Pathways in Macrophages. Toxins (Basel) 2023; 15:toxins15020139. [PMID: 36828453 PMCID: PMC9967024 DOI: 10.3390/toxins15020139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2022] [Revised: 01/28/2023] [Accepted: 02/04/2023] [Indexed: 02/12/2023] Open
Abstract
Edema toxin (ET), one of the main toxic factors of Bacillus anthracis (B. anthracis), is a kind of potent adenylate cyclase (AC). B. anthracis has adapted to resist macrophage microbicidal mechanisms in part by secreting ET. To date, there is limited information on the pathogenic mechanisms used by ET to manipulate macrophage function, especially at the transcriptome level. We used RNA sequencing to study transcriptional changes in RAW264.7 cells treated with ET. We aimed to identify molecular events associated with the establishment of infection and followed changes in cellular proteins. Our results indicate that ET inhibited TNF-α expression in the RAW264.7 mouse macrophage cell line by activating the cAMP/PKA pathway. ET challenge of macrophages induced a differential expression of genes that participate in multiple macrophage effector functions such as cytokine production, cell adhesion, and the inflammatory response. Furthermore, ET influenced the expression of components of the ERK1/2, as well as the NF-αB signaling pathways. We also showed that ET treatments inhibit the phosphorylation of the ERK1/2 protein. ET also attenuated NF-αB subunit p65 phosphorylation and transcriptional activity of NF-αB via the cAMP/PKA pathway in macrophages. Since the observed modulatory effects were characteristic only of the bacterial exotoxin ET, we propose this may be a mechanism used by B. anthracis to manipulate macrophages and establish systemic infection.
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22
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Chronis IB, Puthenveedu MA. Patching holes in the mechanism of opioid tolerance. Trends Pharmacol Sci 2023; 44:70-72. [PMID: 36435677 PMCID: PMC10320836 DOI: 10.1016/j.tips.2022.11.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 11/16/2022] [Accepted: 11/17/2022] [Indexed: 11/27/2022]
Abstract
Tolerance is a significant obstacle to use of opioids as safe pain relieving drugs, but the cellular processes that result in tolerance have remained elusive. A new study by Maza and colleagues identifies the protein Patched domain-containing 1 (PTCHD1) and its effects on cellular cholesterol as potential targets for preventing opioid tolerance.
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Affiliation(s)
- Ian B Chronis
- Department of Pharmacology, University of Michigan Medical School, Ann Arbor, MI 48109, USA.
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23
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PTCHD1 Binds Cholesterol but Not Sonic Hedgehog, Suggesting a Distinct Cellular Function. Int J Mol Sci 2023; 24:ijms24032682. [PMID: 36769003 PMCID: PMC9917202 DOI: 10.3390/ijms24032682] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2022] [Revised: 01/09/2023] [Accepted: 01/23/2023] [Indexed: 02/04/2023] Open
Abstract
Deleterious mutations in the X-linked Patched domain-containing 1 (PTCHD1) gene may account for up to 1% of autism cases. Despite this, the PTCHD1 protein remains poorly understood. Structural similarities to Patched family proteins point to a role in sterol transport, but this hypothesis has not been verified experimentally. Additionally, PTCHD1 has been suggested to be involved in Hedgehog signalling, but thus far, the experimental results have been conflicting. To enable a variety of biochemical and structural experiments, we developed a method for expressing PTCHD1 in Spodoptera frugiperda cells, solubilising it in glycol-diosgenin, and purifying it to homogeneity. In vitro and in silico experiments show that PTCHD1 function is not interchangeable with Patched 1 (PTCH1) in canonical Hedgehog signalling, since it does not repress Smoothened in Ptch1-/- mouse embryonic fibroblasts and does not bind Sonic Hedgehog. However, we found that PTCHD1 binds cholesterol similarly to PTCH1. Furthermore, we identified 13 PTCHD1-specific protein interactors through co-immunoprecipitation and demonstrated a link to cell stress responses and RNA stress granule formation. Thus, our results support the notion that despite structural similarities to other Patched family proteins, PTCHD1 may have a distinct cellular function.
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24
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Shirokova O, Zaborskaya O, Pchelin P, Kozliaeva E, Pershin V, Mukhina I. Genetic and Epigenetic Sexual Dimorphism of Brain Cells during Aging. Brain Sci 2023; 13:brainsci13020195. [PMID: 36831738 PMCID: PMC9954625 DOI: 10.3390/brainsci13020195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2022] [Revised: 01/16/2023] [Accepted: 01/18/2023] [Indexed: 01/27/2023] Open
Abstract
In recent years, much of the attention paid to theoretical and applied biomedicine, as well as neurobiology, has been drawn to various aspects of sexual dimorphism due to the differences that male and female brain cells demonstrate during aging: (a) a dimorphic pattern of response to therapy for neurodegenerative disorders, (b) different age of onset and different degrees of the prevalence of such disorders, and (c) differences in their symptomatic manifestations in men and women. The purpose of this review is to outline the genetic and epigenetic differences in brain cells during aging in males and females. As a result, we hereby show that the presence of brain aging patterns in males and females is due to a complex of factors associated with the effects of sex chromosomes, which subsequently entails a change in signal cascades in somatic cells.
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Affiliation(s)
- Olesya Shirokova
- Institute of Fundamental Medicine, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod 603950, Russia
- Correspondence:
| | - Olga Zaborskaya
- Institute of Fundamental Medicine, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod 603950, Russia
| | - Pavel Pchelin
- Institute of Fundamental Medicine, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod 603950, Russia
- Institute of Biology and Biomedicine, Lobachevsky State University, 23 Gagarin Avenue, Nizhny Novgorod 603002, Russia
| | - Elizaveta Kozliaeva
- Institute of Fundamental Medicine, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod 603950, Russia
| | - Vladimir Pershin
- Institute of Fundamental Medicine, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod 603950, Russia
- Institute of Biology and Biomedicine, Lobachevsky State University, 23 Gagarin Avenue, Nizhny Novgorod 603002, Russia
| | - Irina Mukhina
- Institute of Fundamental Medicine, Privolzhsky Research Medical University, 10/1 Minin and Pozharsky Square, Nizhny Novgorod 603950, Russia
- Institute of Biology and Biomedicine, Lobachevsky State University, 23 Gagarin Avenue, Nizhny Novgorod 603002, Russia
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25
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Meziane H, Birling MC, Wendling O, Leblanc S, Dubos A, Selloum M, Pavlovic G, Sorg T, Kalscheuer VM, Billuart P, Laumonnier F, Chelly J, van Bokhoven H, Herault Y. Large-Scale Functional Assessment of Genes Involved in Rare Diseases with Intellectual Disabilities Unravels Unique Developmental and Behaviour Profiles in Mouse Models. Biomedicines 2022; 10:biomedicines10123148. [PMID: 36551904 PMCID: PMC9775489 DOI: 10.3390/biomedicines10123148] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 11/29/2022] [Accepted: 12/02/2022] [Indexed: 12/12/2022] Open
Abstract
Major progress has been made over the last decade in identifying novel genes involved in neurodevelopmental disorders, although the task of elucidating their corresponding molecular and pathophysiological mechanisms, which are an essential prerequisite for developing therapies, has fallen far behind. We selected 45 genes for intellectual disabilities to generate and characterize mouse models. Thirty-nine of them were based on the frequency of pathogenic variants in patients and literature reports, with several corresponding to de novo variants, and six other candidate genes. We used an extensive screen covering the development and adult stages, focusing specifically on behaviour and cognition to assess a wide range of functions and their pathologies, ranging from basic neurological reflexes to cognitive abilities. A heatmap of behaviour phenotypes was established, together with the results of selected mutants. Overall, three main classes of mutant lines were identified based on activity phenotypes, with which other motor or cognitive deficits were associated. These data showed the heterogeneity of phenotypes between mutation types, recapitulating several human features, and emphasizing the importance of such systematic approaches for both deciphering genetic etiological causes of ID and autism spectrum disorders, and for building appropriate therapeutic strategies.
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Affiliation(s)
- Hamid Meziane
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), PHENOMIN, CELPHEDIA, 1 rue Laurent Fries, 67404 Illkirch, France
| | - Marie-Christine Birling
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), PHENOMIN, CELPHEDIA, 1 rue Laurent Fries, 67404 Illkirch, France
| | - Olivia Wendling
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), PHENOMIN, CELPHEDIA, 1 rue Laurent Fries, 67404 Illkirch, France
| | - Sophie Leblanc
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), PHENOMIN, CELPHEDIA, 1 rue Laurent Fries, 67404 Illkirch, France
| | - Aline Dubos
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), PHENOMIN, CELPHEDIA, 1 rue Laurent Fries, 67404 Illkirch, France
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire, 1 rue Laurent Fries, 67404 Illkirch, France
| | - Mohammed Selloum
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), PHENOMIN, CELPHEDIA, 1 rue Laurent Fries, 67404 Illkirch, France
| | - Guillaume Pavlovic
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), PHENOMIN, CELPHEDIA, 1 rue Laurent Fries, 67404 Illkirch, France
| | - Tania Sorg
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), PHENOMIN, CELPHEDIA, 1 rue Laurent Fries, 67404 Illkirch, France
| | - Vera M. Kalscheuer
- Max Planck Institute for Molecular Genetics, Research Group Development and Disease, Ihnestr. 63-73, 14195 Berlin, Germany
| | - Pierre Billuart
- Institute of Psychiatry and Neuroscience of Paris (IPNP), Université de Paris, INSERM U1266, “Genetic and Development of Cerebral Cortex”, 75014 Paris, France
- GHU Paris Psychiatrie et Neurosciences, Hôpital Sainte Anne, 75014 Paris, France
| | - Frédéric Laumonnier
- UMR1253, iBrain, University of Tours, Inserm, 37032 Tours, France
- Service de Génétique, Centre Hospitalier Régional Universitaire, 37044 Tours, France
| | - Jamel Chelly
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire, 1 rue Laurent Fries, 67404 Illkirch, France
| | - Hans van Bokhoven
- Department of Cognitive Neuroscience, Radboudumc, 6500 HB Nijmegen, The Netherlands
- Department of Human Genetics, Radboudumc, 6500 HB Nijmegen, The Netherlands
- Donders Institute for Brain, Cognition, and Behaviour, Centre for Neuroscience, 6525 AJ Nijmegen, The Netherlands
| | - Yann Herault
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), PHENOMIN, CELPHEDIA, 1 rue Laurent Fries, 67404 Illkirch, France
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire, 1 rue Laurent Fries, 67404 Illkirch, France
- Correspondence: ; Tel.: +33-388-65-5715
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26
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Li Z, Liu X, Li C, Wei Z, Shi Y, Song H, Chen X, Zhang Y, Li J, Zhu R, Hu B, Ye W, Huo D, Jiang G, Sasaki T, Zhang L, Han F, Lu Y. Decreased synapse-associated proteins are associated with the onset of epileptic memory impairment in endothelial CDK5-deficient mice. MedComm (Beijing) 2022; 3:e128. [PMID: 35770064 PMCID: PMC9209881 DOI: 10.1002/mco2.128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2021] [Revised: 02/27/2022] [Accepted: 03/01/2022] [Indexed: 11/07/2022] Open
Abstract
Accumulating evidence indicates that epilepsy has a higher risk of inducing memory impairment and dementia. However, the underlying onset mechanism remains unclear. Here, we found that mice with spontaneous epilepsy induced by endothelial CDK5 deficiency exhibited hippocampal-dependent memory impairment at 6 months of age, but not at 2 months of age. Moreover, the persistent epileptic seizures induce aberrant changes in phosphorylation of CaMKII protein in the hippocampus of spontaneous epileptic mice. Using genome-wide RNA sequencing and intergenic interaction analysis of STRING, we found that in addition to epilepsy-related genes, there are changes in synaptic organization pathway node genes, such as Bdnf and Grin1. The synapse-related proteins by Western blot analysis, such as NMDA receptors (NR1 and NR2B), PSD95, and the phosphorylation of synapsin1, are progressively decreased during epileptic seizures in Cdh5-CreERT2;CDK5f/f mice. Notably, we found that valproate (VPA) and phenytoin (PHT) augment mRNA expression and protein levels of synapse-related genes and ameliorate memory impairment in Cdh5-CreERT2;CDK5f/f mice. Our study elucidates a potential mechanism of memory deficits in epilepsy, and pharmacological reversal of synaptic pathology targeting might provide a new therapeutic intervention for epileptic memory deficits.
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Affiliation(s)
- Zheng‐Mao Li
- Key Laboratory of Cardiovascular & Cerebrovascular MedicineSchool of PharmacyNanjing Medical UniversityNanjingChina
| | - Xiu‐Xiu Liu
- Key Laboratory of Cardiovascular & Cerebrovascular MedicineSchool of PharmacyNanjing Medical UniversityNanjingChina
| | - Chen Li
- Key Laboratory of Cardiovascular & Cerebrovascular MedicineSchool of PharmacyNanjing Medical UniversityNanjingChina
| | - Zhao‐Cong Wei
- Department of PhysiologyNanjing Medical UniversityNanjingChina
| | - Yi Shi
- Department of PhysiologyNanjing Medical UniversityNanjingChina
| | - Heng‐Yi Song
- Key Laboratory of Cardiovascular & Cerebrovascular MedicineSchool of PharmacyNanjing Medical UniversityNanjingChina
| | - Xiang Chen
- Key Laboratory of Cardiovascular & Cerebrovascular MedicineSchool of PharmacyNanjing Medical UniversityNanjingChina
| | - Yu Zhang
- Key Laboratory of Cardiovascular & Cerebrovascular MedicineSchool of PharmacyNanjing Medical UniversityNanjingChina
| | - Jia‐Wei Li
- The First Clinical Medical College of Nanjing Medical UniversityNanjing Medical UniversityNanjingChina
| | - Rui‐Fang Zhu
- The First Clinical Medical College of Nanjing Medical UniversityNanjing Medical UniversityNanjingChina
| | - Ben‐Hui Hu
- Key Laboratory of Clinical and Medical EngineeringSchool of Biomedical Engineering and InformaticsNanjing Medical UniversityNanjingChina
| | - Wei‐Feng Ye
- Department of PharmacyThe Children's Hospital, Zhejiang University School of Medicine, National Clinical Research Center for Child HealthHangzhouChina
| | - Da Huo
- Key Laboratory of Cardiovascular & Cerebrovascular MedicineSchool of PharmacyNanjing Medical UniversityNanjingChina
| | - Guo‐Jun Jiang
- Department of PharmacyZhejiang Xiaoshan HospitalHangzhouChina
| | - Takuya Sasaki
- Department of PharmacologyGraduate School of Pharmaceutical SciencesTohoku UniversitySendaiJapan
| | - Li Zhang
- Institute of Brain ScienceThe Affiliated Brain Hospital of Nanjing Medical UniversityNanjingChina
| | - Feng Han
- Key Laboratory of Cardiovascular & Cerebrovascular MedicineSchool of PharmacyNanjing Medical UniversityNanjingChina
- Institute of Brain ScienceThe Affiliated Brain Hospital of Nanjing Medical UniversityNanjingChina
- Gusu SchoolNanjing Medical University, Suzhou Municipal Hospital, The Affiliated Suzhou Hospital of Nanjing Medical UniversitySuzhouChina
| | - Ying‐Mei Lu
- Department of PhysiologyNanjing Medical UniversityNanjingChina
- Institute of Brain ScienceThe Affiliated Brain Hospital of Nanjing Medical UniversityNanjingChina
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27
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Ptchd1 mediates opioid tolerance via cholesterol-dependent effects on μ-opioid receptor trafficking. Nat Neurosci 2022; 25:1179-1190. [PMID: 35982154 DOI: 10.1038/s41593-022-01135-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Accepted: 07/11/2022] [Indexed: 11/09/2022]
Abstract
Repeated exposure to opioids causes tolerance, which limits their analgesic utility and contributes to overdose and abuse liability. However, the molecular mechanisms underpinning tolerance are not well understood. Here, we used a forward genetic screen in Caenorhabditis elegans for unbiased identification of genes regulating opioid tolerance which revealed a role for PTR-25/Ptchd1. We found that PTR-25/Ptchd1 controls μ-opioid receptor trafficking and that these effects were mediated by the ability of PTR-25/Ptchd1 to control membrane cholesterol content. Electrophysiological studies showed that loss of Ptchd1 in mice reduced opioid-induced desensitization of neurons in several brain regions and the peripheral nervous system. Mice and C. elegans lacking Ptchd1/PTR-25 display similarly augmented responses to opioids. Ptchd1 knockout mice fail to develop analgesic tolerance and have greatly diminished somatic withdrawal. Thus, we propose that Ptchd1 plays an evolutionarily conserved role in protecting the μ-opioid receptor against overstimulation.
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Scaroni F, Visconte C, Serpente M, Golia MT, Gabrielli M, Huiskamp M, Hulst HE, Carandini T, De Riz M, Pietroboni A, Rotondo E, Scarpini E, Galimberti D, Teunissen CE, van Dam M, de Jong BA, Fenoglio C, Verderio C. miR-150-5p and let-7b-5p in Blood Myeloid Extracellular Vesicles Track Cognitive Symptoms in Patients with Multiple Sclerosis. Cells 2022; 11:cells11091551. [PMID: 35563859 PMCID: PMC9104242 DOI: 10.3390/cells11091551] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2022] [Revised: 04/30/2022] [Accepted: 05/02/2022] [Indexed: 02/04/2023] Open
Abstract
Cognitive deficits strongly affect the quality of life of patients with multiple sclerosis (MS). However, no cognitive MS biomarkers are currently available. Extracellular vesicles (EVs) contain markers of parental cells and are able to pass from the brain into blood, representing a source of disease biomarkers. The aim of this study was to investigate whether small non-coding microRNAs (miRNAs) targeting synaptic genes and packaged in plasma EVs may reflect cognitive deficits in MS patients. Total EVs were precipitated by Exoquick from the plasma of twenty-six cognitively preserved (CP) and twenty-three cognitively impaired (CI) MS patients belonging to two independent cohorts. Myeloid EVs were extracted by affinity capture from total EVs using Isolectin B4 (IB4). Fourteen miRNAs targeting synaptic genes were selected and measured by RT-PCR in both total and myeloid EVs. Myeloid EVs from CI patients expressed higher levels of miR-150-5p and lower levels of let-7b-5p compared to CP patients. Stratification for progressive MS (PMS) and relapsing-remitting MS (RRMS) and correlation with clinical parameters suggested that these alterations might be attributable to cognitive deficits rather than disease progression. This study identifies miR-150-5p and let-7b-5p packaged in blood myeloid EVs as possible biomarkers for cognitive deficits in MS.
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Affiliation(s)
- Federica Scaroni
- Institute of Neuroscience, CNR, Via Follereau 3, 20854 Vedano al Lambro, Italy; (F.S.); (M.T.G.); (M.G.)
| | - Caterina Visconte
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via F. Sforza 35, 20122 Milan, Italy; (C.V.); (E.S.); (D.G.)
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
| | - Maria Serpente
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Maria Teresa Golia
- Institute of Neuroscience, CNR, Via Follereau 3, 20854 Vedano al Lambro, Italy; (F.S.); (M.T.G.); (M.G.)
| | - Martina Gabrielli
- Institute of Neuroscience, CNR, Via Follereau 3, 20854 Vedano al Lambro, Italy; (F.S.); (M.T.G.); (M.G.)
| | - Marijn Huiskamp
- MS Center Amsterdam, Amsterdam Neuroscience, Department of Anatomy and Neurosciences, Amsterdam UMC, Vrije Universiteit Amsterdam UMC, De Boelelaan 1117, 1081 Amsterdam, The Netherlands; (M.H.); (M.v.D.)
| | - Hanneke E. Hulst
- Health-, Medical- and Neuropsychology Unit, Institute of Psychology, Leiden University, 2300 Leiden, The Netherlands;
| | - Tiziana Carandini
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Milena De Riz
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Anna Pietroboni
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Emanuela Rotondo
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Elio Scarpini
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via F. Sforza 35, 20122 Milan, Italy; (C.V.); (E.S.); (D.G.)
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Daniela Galimberti
- Department of Biomedical, Surgical and Dental Sciences, University of Milan, Via F. Sforza 35, 20122 Milan, Italy; (C.V.); (E.S.); (D.G.)
- Centro Dino Ferrari, University of Milan, 20122 Milan, Italy; (M.S.); (T.C.); (M.D.R.); (A.P.); (E.R.)
- Fondazione IRCCS Ca’ Granda, Ospedale Policlinico, 20122 Milan, Italy
| | - Charlotte E. Teunissen
- MS Center Amsterdam, Amsterdam Neuroscience, Department of Neurology, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 Amsterdam, The Netherlands; (C.E.T.); (B.A.d.J.)
| | - Maureen van Dam
- MS Center Amsterdam, Amsterdam Neuroscience, Department of Anatomy and Neurosciences, Amsterdam UMC, Vrije Universiteit Amsterdam UMC, De Boelelaan 1117, 1081 Amsterdam, The Netherlands; (M.H.); (M.v.D.)
| | - Brigit A. de Jong
- MS Center Amsterdam, Amsterdam Neuroscience, Department of Neurology, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 Amsterdam, The Netherlands; (C.E.T.); (B.A.d.J.)
| | - Chiara Fenoglio
- MS Center Amsterdam, Amsterdam Neuroscience, Department of Neurology, Amsterdam UMC, Vrije Universiteit Amsterdam, De Boelelaan 1117, 1081 Amsterdam, The Netherlands; (C.E.T.); (B.A.d.J.)
- Department of Neuropathology and Transplantation, University of Milan, Via F. Sforza 35, 20122 Milan, Italy
- Correspondence: (C.F.); (C.V.); Tel.: +39-0264488386 (C.V.)
| | - Claudia Verderio
- Institute of Neuroscience, CNR, Via Follereau 3, 20854 Vedano al Lambro, Italy; (F.S.); (M.T.G.); (M.G.)
- Correspondence: (C.F.); (C.V.); Tel.: +39-0264488386 (C.V.)
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29
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Planar cell polarity and the pathogenesis of Tourette Disorder: New hypotheses and perspectives. Dev Biol 2022; 489:14-20. [DOI: 10.1016/j.ydbio.2022.05.017] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2021] [Revised: 05/02/2022] [Accepted: 05/23/2022] [Indexed: 11/20/2022]
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Pastore SF, Ko SY, Frankland PW, Hamel PA, Vincent JB. PTCHD1: Identification and Neurodevelopmental Contributions of an Autism Spectrum Disorder and Intellectual Disability Susceptibility Gene. Genes (Basel) 2022; 13:527. [PMID: 35328080 PMCID: PMC8953913 DOI: 10.3390/genes13030527] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Revised: 03/01/2022] [Accepted: 03/03/2022] [Indexed: 11/24/2022] Open
Abstract
Over the last one and a half decades, copy number variation and whole-genome sequencing studies have illuminated the considerable genetic heterogeneity that underlies the etiologies of autism spectrum disorder (ASD) and intellectual disability (ID). These investigations support the idea that ASD may result from complex interactions between susceptibility-related genetic variants (single nucleotide variants or copy number variants) and the environment. This review outlines the identification and neurobiological characterization of two such genes located in Xp22.11, Patched domain-containing 1 (PTCHD1), and its antisense lncRNA PTCHD1-AS. Animal models of Ptchd1 disruption have recapitulated a subset of clinical symptoms related to ASD as well as to ID. Furthermore, these Ptchd1 mouse knockout studies implicate the expression of Ptchd1 in both the thalamic and the hippocampal brain regions as being crucial for proper neurodevelopment and cognitive function. Altered kynurenine metabolic signalling has been postulated as a disease mechanism in one of these animal studies. Additionally, ASD patient-derived induced pluripotent stem cells (iPSCs) carrying a copy number loss impacting the antisense non-coding RNA PTCHD1-AS have been used to generate 2D neuronal cultures. While copy number loss of PTCHD1-AS does not affect the transcription of PTCHD1, the neurons exhibit diminished miniature excitatory postsynaptic current frequency, supporting its role in ASD etiology. A more thorough understanding of risk factor genes, such as PTCHD1 and PTCHD1-AS, will help to clarify the intricate genetic and biological mechanisms that underlie ASD and ID, providing a foundation for meaningful therapeutic interventions to enhance the quality of life of individuals who experience these conditions.
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Affiliation(s)
- Stephen F. Pastore
- Molecular Neuropsychiatry and Development (MiND) Lab, Molecular Brain Science Research Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON M5T 1RS, Canada;
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada;
| | - Sangyoon Y. Ko
- Program in Neurosciences and Mental Health, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada;
- Department of Physiology, University of Toronto, Toronto, ON M5S 1A8, Canada
| | - Paul W. Frankland
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada;
- Program in Neurosciences and Mental Health, The Hospital for Sick Children, Toronto, ON M5G 1X8, Canada;
- Department of Physiology, University of Toronto, Toronto, ON M5S 1A8, Canada
- Department of Psychology, University of Toronto, Toronto, ON M5S 3G3, Canada
| | - Paul A. Hamel
- Department of Laboratory Medicine and Pathobiology, University of Toronto, Toronto, ON M5S 1A8, Canada;
| | - John B. Vincent
- Molecular Neuropsychiatry and Development (MiND) Lab, Molecular Brain Science Research Department, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON M5T 1RS, Canada;
- Institute of Medical Science, University of Toronto, Toronto, ON M5S 1A8, Canada;
- Department of Psychiatry, University of Toronto, Toronto, ON M5T 1R8, Canada
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31
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Riet F, Mittelhaeuser C, Lux A, Bour R, Selloum M, Sorg T, Herault Y, Meziane H. Behavioral Testing Design for Evaluation of Cognitive Disabilities. Curr Protoc 2022; 2:e382. [PMID: 35195951 DOI: 10.1002/cpz1.382] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Abstract
Intellectual disabilities (ID) constitute a class of human neurodevelopmental diseases and are a major medical and socioeconomic problem owing to their high incidence and enormous burden to the families of those affected. In the past three decades, mutant mouse technologies have provided powerful tools for elucidating the pathophysiological mechanisms underlying behavioral and developmental alterations related to IDs and for addressing new therapeutic strategies, and major progress has been made revealing previously unidentified genes involved in ID. However, the pathological hallmarks of IDs are very heterogeneous in regard to both the functional deficits observed and the severity of the phenotype, even within the same mutation types. For this reason, an appropriate experimental design is required to reduce the risk of false negatives and positives in animal functional genomic studies. This experimental design should address functions important to evaluate, tests, and the appropriate workflow. Here, we propose an extensive behavioral screen with detailed protocols, which was successfully used in a systematic mouse functional genomic approach to gain pathway-based insights into mechanisms leading to cognitive dysfunction in humans. © 2022 Wiley Periodicals LLC. Basic Protocol 1: Assessment of circadian activity and ingestive behavior Basic Protocol 2: Assessment of neurological reflexes and motor abilities using the grip and rotarod tests Basic Protocol 3: Evaluation of anxiety-related behavior using the elevated plus maze Basic Protocol 4: Evaluation of recognition memory using the object recognition task Basic Protocol 5: Evaluation of social behavior using the social recognition test Basic Protocol 6: Evaluation of working memory using the Y-maze spontaneous alternation test Basic Protocol 7: Evaluation of emotional learning and memory using the fear conditioning test.
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Affiliation(s)
- Fabrice Riet
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Christophe Mittelhaeuser
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Aline Lux
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Raphael Bour
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Mohammed Selloum
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Tania Sorg
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
| | - Yann Herault
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France.,Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire, IGBMC, Illkirch, France
| | - Hamid Meziane
- Université de Strasbourg, CNRS, INSERM, CELPHEDIA, PHENOMIN, Institut Clinique de la Souris (ICS), Illkirch, France
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32
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Identification of Novel Gene Variants for Autism Spectrum Disorders in the Lebanese Population Using Whole-Exome Sequencing. Genes (Basel) 2022; 13:genes13020186. [PMID: 35205231 PMCID: PMC8871811 DOI: 10.3390/genes13020186] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2021] [Revised: 01/10/2022] [Accepted: 01/19/2022] [Indexed: 12/04/2022] Open
Abstract
In our previous study, in which array CGH was used on 19 Lebanese ASD subjects and their parents, we identified rare copy number variants (CNVs) in 14 subjects. The five remaining subjects did not show any CNVs related to autism spectrum disorders (ASD). In the present complementary study, we applied whole-exome sequencing (WES), which allows the identification of rare genetic variations such as single nucleotide variations and small insertions/deletions, to the five negative CNV subjects. After stringent filtering of initial data on the five families, three novel genes potentially related to neurodevelopment were identified, including a de novo mutation in the MIS18BP1 gene. In addition, genes already known to be related to ASD contained sequence variations. Our findings outline the potential involvement of the novel de novo mutation in the MIS18BP1 gene in the genetic etiology and pathophysiology of ASD and highlights the genetic complexity of these disorders. Further studies with larger cohorts of subjects are needed to confirm these observations, and functional analyses need to be performed to understand the precise pathophysiology in these cases.
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33
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Fang SC, Wang JJ, Chen F, Tang SS, Mu RH, Yuan DH, Zhao JJ, Hong H, Long Y. Hippocampal CysLT1R overexpression or activation accelerates memory deficits, synaptic dysfunction, and amyloidogenesis in young APP/PS1 transgenic mice. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:1531. [PMID: 34790737 PMCID: PMC8576703 DOI: 10.21037/atm-21-4518] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Accepted: 10/02/2021] [Indexed: 11/12/2022]
Abstract
Background Our previous studies demonstrated that cysteinyl leukotrienes receptor 1 (CysLT1R) knockout, pharmacological blockade, or hippocampus knockdown produced beneficial effects against Alzheimer’s disease (AD); however, whether CysLT1R upregulation has deleterious effects on AD remains elusive. Methods In this study, we investigated the changes in behaviors, hippocampal amyloidogenesis, and synapse plasticity after CysLT1R overexpression by microinfusion of the lentiviral vector, containing its coding sequence of mouse (LV-CysLT1R), into the bilateral dentate gyri (DG) of the hippocampus or CysLT1R activation by repeated systemic administration of its agonist YM-17690 (0.1 mg/kg, once a day, i.p., for 28 d). Results The behavior data showed that overexpression of CysLT1R in hippocampal DG or administration of YM-17690 deteriorated behavioral performance in Morris water maze (MWM), Y-maze tests, and novel object recognition (NOR) in young APP/PS1 mice. The further studies showed that these treatments significantly destroyed synaptic function, as evidenced by impaired hippocampal long-term potentiation (LTP), decreased spine density, low number of synapses, and decreased postsynaptic protein (PSD95), and promoted the generation of amyloid β (Aβ) through increased expression of BACE1 and PS1 in the hippocampus of young APP/PS1 mice. Conclusions Together, our results indicate that CysLT1R upregulation accelerates memory impairment in young APP/PS1 mice, which is associated with promoting synaptic dysfunction and amyloidogenesis in the hippocampus.
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Affiliation(s)
- Shun-Chang Fang
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, China
| | - Jun-Jie Wang
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, China
| | - Fang Chen
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, China
| | - Su-Su Tang
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, China
| | - Rong-Hao Mu
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, China
| | - Dan-Hua Yuan
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, China
| | - Jia-Jia Zhao
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, China
| | - Hao Hong
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, China
| | - Yan Long
- Department of Pharmacology, Key Laboratory of Neuropsychiatric Diseases, China Pharmaceutical University, Nanjing, China
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Cohen JD, Cadena del Castillo CE, Serra ND, Kaech A, Spang A, Sundaram MV. The Caenorhabditis elegans Patched domain protein PTR-4 is required for proper organization of the precuticular apical extracellular matrix. Genetics 2021; 219:iyab132. [PMID: 34740248 PMCID: PMC8570789 DOI: 10.1093/genetics/iyab132] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 08/04/2021] [Indexed: 12/30/2022] Open
Abstract
The Patched-related superfamily of transmembrane proteins can transport lipids or other hydrophobic molecules across cell membranes. While the Hedgehog receptor Patched has been intensively studied, much less is known about the biological roles of other Patched-related family members. Caenorhabditis elegans has a large number of Patched-related proteins, despite lacking a canonical Hedgehog pathway. Here, we show that PTR-4 promotes the assembly of the precuticle apical extracellular matrix, a transient and molecularly distinct matrix that precedes and patterns the later collagenous cuticle or exoskeleton. ptr-4 mutants share many phenotypes with precuticle mutants, including defects in eggshell dissolution, tube shaping, alae (cuticle ridge) structure, molting, and cuticle barrier function. PTR-4 localizes to the apical side of a subset of outward-facing epithelia, in a cyclical manner that peaks when precuticle matrix is present. Finally, PTR-4 is required to limit the accumulation of the lipocalin LPR-3 and to properly localize the Zona Pellucida domain protein LET-653 within the precuticle. We propose that PTR-4 transports lipids or other hydrophobic components that help to organize the precuticle and that the cuticle and molting defects seen in ptr-4 mutants result at least in part from earlier disorganization of the precuticle.
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Affiliation(s)
- Jennifer D Cohen
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania 19104, USA
| | | | - Nicholas D Serra
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania 19104, USA
| | - Andres Kaech
- Center for Microscopy and Image Analysis, University of Zürich, 8006 Zürich, Switzerland
| | - Anne Spang
- Biozentrum, University of Basel, 4001 Basel, Switzerland
| | - Meera V Sundaram
- Department of Genetics, University of Pennsylvania Perelman School of Medicine, Philadelphia, Pennsylvania 19104, USA
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35
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Gozal E, Jagadapillai R, Cai J, Barnes GN. Potential crosstalk between sonic hedgehog-WNT signaling and neurovascular molecules: Implications for blood-brain barrier integrity in autism spectrum disorder. J Neurochem 2021. [PMID: 34169527 DOI: 10.1111/jnc.15081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Autism Spectrum Disorder (ASD) is a neurodevelopmental disease originating from combined genetic and environmental factors. Post-mortem human studies and some animal ASD models have shown brain neuroinflammation, oxidative stress, and changes in blood-brain barrier (BBB) integrity. However, the signaling pathways leading to these inflammatory findings and vascular alterations are currently unclear. The BBB plays a critical role in controlling brain homeostasis and immune response. Its dysfunction can result from developmental genetic abnormalities or neuroinflammatory processes. In this review, we explore the role of the Sonic Hedgehog/Wingless-related integration site (Shh/Wnt) pathways in neurodevelopment, neuroinflammation, and BBB development. The balance between Wnt-β-catenin and Shh pathways controls angiogenesis, barriergenesis, neurodevelopment, central nervous system (CNS) morphogenesis, and neuronal guidance. These interactions are critical to maintain BBB function in the mature CNS to prevent the influx of pathogens and inflammatory cells. Genetic mutations of key components of these pathways have been identified in ASD patients and animal models, which correlate with the severity of ASD symptoms. Disruption of the Shh/Wnt crosstalk may therefore compromise BBB development and function. In turn, impaired Shh signaling and glial activation may cause neuroinflammation that could disrupt the BBB. Elucidating how ASD-related mutations of Shh/Wnt signaling could cause BBB leaks and neuroinflammation will contribute to our understanding of the role of their interactions in ASD pathophysiology. These observations may provide novel targeted therapeutic strategies to prevent or alleviate ASD symptoms while preserving normal developmental processes. Cover Image for this issue: https://doi.org/10.1111/jnc.15081.
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Affiliation(s)
- Evelyne Gozal
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY, USA
| | - Rekha Jagadapillai
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY, USA
| | - Jun Cai
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY, USA
| | - Gregory N Barnes
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY, USA.,Department of Neurology, University of Louisville, Louisville, KY, USA
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36
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Gozal E, Jagadapillai R, Cai J, Barnes GN. Potential crosstalk between sonic hedgehog-WNT signaling and neurovascular molecules: Implications for blood-brain barrier integrity in autism spectrum disorder. J Neurochem 2021; 159:15-28. [PMID: 34169527 DOI: 10.1111/jnc.15460] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 05/19/2021] [Accepted: 06/20/2021] [Indexed: 12/19/2022]
Abstract
Autism Spectrum Disorder (ASD) is a neurodevelopmental disease originating from combined genetic and environmental factors. Post-mortem human studies and some animal ASD models have shown brain neuroinflammation, oxidative stress, and changes in blood-brain barrier (BBB) integrity. However, the signaling pathways leading to these inflammatory findings and vascular alterations are currently unclear. The BBB plays a critical role in controlling brain homeostasis and immune response. Its dysfunction can result from developmental genetic abnormalities or neuroinflammatory processes. In this review, we explore the role of the Sonic Hedgehog/Wingless-related integration site (Shh/Wnt) pathways in neurodevelopment, neuroinflammation, and BBB development. The balance between Wnt-β-catenin and Shh pathways controls angiogenesis, barriergenesis, neurodevelopment, central nervous system (CNS) morphogenesis, and neuronal guidance. These interactions are critical to maintain BBB function in the mature CNS to prevent the influx of pathogens and inflammatory cells. Genetic mutations of key components of these pathways have been identified in ASD patients and animal models, which correlate with the severity of ASD symptoms. Disruption of the Shh/Wnt crosstalk may therefore compromise BBB development and function. In turn, impaired Shh signaling and glial activation may cause neuroinflammation that could disrupt the BBB. Elucidating how ASD-related mutations of Shh/Wnt signaling could cause BBB leaks and neuroinflammation will contribute to our understanding of the role of their interactions in ASD pathophysiology. These observations may provide novel targeted therapeutic strategies to prevent or alleviate ASD symptoms while preserving normal developmental processes.
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Affiliation(s)
- Evelyne Gozal
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY, USA
| | - Rekha Jagadapillai
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY, USA
| | - Jun Cai
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY, USA
| | - Gregory N Barnes
- Department of Pediatrics, Pediatric Research Institute, University of Louisville, Louisville, KY, USA.,Department of Neurology, University of Louisville, Louisville, KY, USA
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37
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Halewa J, Marouillat S, Dixneuf M, Thépault RA, Ung DC, Chatron N, Gérard B, Ghoumid J, Lesca G, Till M, Smol T, Couque N, Ruaud L, Chune V, Grotto S, Verloes A, Vuillaume ML, Toutain A, Raynaud M, Laumonnier F. Novel missense mutations in PTCHD1 alter its plasma membrane subcellular localization and cause intellectual disability and autism spectrum disorder. Hum Mutat 2021; 42:848-861. [PMID: 33856728 PMCID: PMC8359977 DOI: 10.1002/humu.24208] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 03/29/2021] [Accepted: 04/08/2021] [Indexed: 12/22/2022]
Abstract
The X-linked PTCHD1 gene, encoding a synaptic membrane protein, has been involved in neurodevelopmental disorders with the description of deleterious genomic microdeletions or truncating coding mutations. Missense variants were also identified, however, without any functional evidence supporting their pathogenicity level. We investigated 13 missense variants of PTCHD1, including eight previously described (c.152G>A,p.(Ser51Asn); c.217C>T,p.(Leu73Phe); c.517A>G,p.(Ile173Val); c.542A>C,p.(Lys181Thr); c.583G>A,p.(Val195Ile); c.1076A>G,p.(His359Arg); c.1409C>A,p.(Ala470Asp); c.1436A>G,p.(Glu479Gly)), and five novel ones (c.95C>T,p.(Pro32Leu); c.95C>G,p.(Pro32Arg); c.638A>G,p.(Tyr213Cys); c.898G>C,p.(Gly300Arg); c.928G>C,p.(Ala310Pro)) identified in male patients with intellectual disability (ID) and/or autism spectrum disorder (ASD). Interestingly, several of these variants involve amino acids localized in structural domains such as transmembrane segments. To evaluate their potentially deleterious impact on PTCHD1 protein function, we performed in vitro overexpression experiments of the wild-type and mutated forms of PTCHD1-GFP in HEK 293T and in Neuro-2a cell lines as well as in mouse hippocampal primary neuronal cultures. We found that six variants impaired the expression level of the PTCHD1 protein, and were retained in the endoplasmic reticulum suggesting abnormal protein folding. Our functional analyses thus provided evidence of the pathogenic impact of missense variants in PTCHD1, which reinforces the involvement of the PTCHD1 gene in ID and in ASD.
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Affiliation(s)
- Judith Halewa
- UMR1253, iBrain, INSERM, University of Tours, Tours, France
| | | | - Manon Dixneuf
- UMR1253, iBrain, INSERM, University of Tours, Tours, France
| | | | - Dévina C Ung
- UMR1253, iBrain, INSERM, University of Tours, Tours, France
| | - Nicolas Chatron
- Department of Genetics, Hospices Civils de Lyon, Lyon, France.,Institut NeuroMyoGène, CNRS UMR-5310, INSERM U-1217, Univ Lyon, Université Claude Bernard Lyon 1, Lyon, France
| | - Bénédicte Gérard
- Laboratoire de diagnostic génétique, Institut de Génétique Médicale d'Alsace, Hôpitaux Universitaires de Strasbourg, Strasbourg, France
| | - Jamal Ghoumid
- EA7364 RADEME, Clinique de Génétique Guy Fontaine, Université de Lille, CHU de Lille, Lille, France
| | - Gaëtan Lesca
- Department of Genetics, Hospices Civils de Lyon, Lyon, France.,Institut NeuroMyoGène, CNRS UMR-5310, INSERM U-1217, Univ Lyon, Université Claude Bernard Lyon 1, Lyon, France
| | - Marianne Till
- Department of Genetics, Hospices Civils de Lyon, Lyon, France
| | - Thomas Smol
- EA7364 RADEME, Institut de Génétique Médicale, Université de Lille, CHU de Lille, Lille, France
| | - Nathalie Couque
- Department of Genetics, APHP-Robert Debré University Hospital, Paris, France
| | - Lyse Ruaud
- Department of Genetics, APHP-Robert Debré University Hospital, Paris, France.,INSERM, UMR1141, Denis Diderot School of Medicine, Paris University, Paris, France
| | - Valérie Chune
- Department of Genetics, APHP-Robert Debré University Hospital, Paris, France
| | - Sarah Grotto
- Department of Genetics, APHP-Robert Debré University Hospital, Paris, France.,INSERM, UMR1141, Denis Diderot School of Medicine, Paris University, Paris, France
| | - Alain Verloes
- Department of Genetics, APHP-Robert Debré University Hospital, Paris, France.,INSERM, UMR1141, Denis Diderot School of Medicine, Paris University, Paris, France
| | - Marie-Laure Vuillaume
- UMR1253, iBrain, INSERM, University of Tours, Tours, France.,Service de Génétique, Centre hospitalier régional universitaire de Tours, Tours, France
| | - Annick Toutain
- UMR1253, iBrain, INSERM, University of Tours, Tours, France.,Service de Génétique, Centre hospitalier régional universitaire de Tours, Tours, France
| | - Martine Raynaud
- UMR1253, iBrain, INSERM, University of Tours, Tours, France.,Service de Génétique, Centre hospitalier régional universitaire de Tours, Tours, France
| | - Frédéric Laumonnier
- UMR1253, iBrain, INSERM, University of Tours, Tours, France.,Service de Génétique, Centre hospitalier régional universitaire de Tours, Tours, France
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Chiyoda H, Kume M, del Castillo CC, Kontani K, Spang A, Katada T, Fukuyama M. Caenorhabditis elegans PTR/PTCHD PTR-18 promotes the clearance of extracellular hedgehog-related protein via endocytosis. PLoS Genet 2021; 17:e1009457. [PMID: 33872306 PMCID: PMC8104386 DOI: 10.1371/journal.pgen.1009457] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Revised: 05/07/2021] [Accepted: 03/01/2021] [Indexed: 01/25/2023] Open
Abstract
Spatiotemporal restriction of signaling plays a critical role in animal development and tissue homeostasis. All stem and progenitor cells in newly hatched C. elegans larvae are quiescent and capable of suspending their development until sufficient food is supplied. Here, we show that ptr-18, which encodes the evolutionarily conserved patched-related (PTR)/patched domain-containing (PTCHD) protein, temporally restricts the availability of extracellular hedgehog-related protein to establish the capacity of progenitor cells to maintain quiescence. We found that neural progenitor cells exit from quiescence in ptr-18 mutant larvae even when hatched under starved conditions. This unwanted reactivation depended on the activity of a specific set of hedgehog-related grl genes including grl-7. Unexpectedly, neither PTR-18 nor GRL-7 were expressed in newly hatched wild-type larvae. Instead, at the late embryonic stage, both PTR-18 and GRL-7 proteins were first localized around the apical membrane of hypodermal and neural progenitor cells and subsequently targeted for lysosomal degradation before hatching. Loss of ptr-18 caused a significant delay in GRL-7 clearance, causing this protein to be retained in the extracellular space in newly hatched ptr-18 mutant larvae. Furthermore, the putative transporter activity of PTR-18 was shown to be required for the appropriate function of the protein. These findings not only uncover a previously undescribed role of PTR/PTCHD in the clearance of extracellular hedgehog-related proteins via endocytosis-mediated degradation but also illustrate that failure to temporally restrict intercellular signaling during embryogenesis can subsequently compromise post-embryonic progenitor cell function.
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Affiliation(s)
- Hirohisa Chiyoda
- Department of Physiological Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Masahiko Kume
- Department of Physiological Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | | | - Kenji Kontani
- Department of Physiological Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Anne Spang
- Biozentrum, University of Basel, Basel, Switzerland
| | - Toshiaki Katada
- Department of Physiological Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
| | - Masamitsu Fukuyama
- Department of Physiological Chemistry, Graduate School of Pharmaceutical Sciences, The University of Tokyo, Tokyo, Japan
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Duchon A, Del Mar Muniz Moreno M, Martin Lorenzo S, Silva de Souza MP, Chevalier C, Nalesso V, Meziane H, Loureiro de Sousa P, Noblet V, Armspach JP, Brault V, Herault Y. Multi-influential genetic interactions alter behaviour and cognition through six main biological cascades in Down syndrome mouse models. Hum Mol Genet 2021; 30:771-788. [PMID: 33693642 PMCID: PMC8161522 DOI: 10.1093/hmg/ddab012] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2020] [Revised: 12/21/2020] [Accepted: 12/22/2020] [Indexed: 12/13/2022] Open
Abstract
Down syndrome (DS) is the most common genetic form of intellectual disability caused by the presence of an additional copy of human chromosome 21 (Hsa21). To provide novel insights into genotype–phenotype correlations, we used standardized behavioural tests, magnetic resonance imaging and hippocampal gene expression to screen several DS mouse models for the mouse chromosome 16 region homologous to Hsa21. First, we unravelled several genetic interactions between different regions of chromosome 16 and how they contribute significantly to altering the outcome of the phenotypes in brain cognition, function and structure. Then, in-depth analysis of misregulated expressed genes involved in synaptic dysfunction highlighted six biological cascades centred around DYRK1A, GSK3β, NPY, SNARE, RHOA and NPAS4. Finally, we provide a novel vision of the existing altered gene–gene crosstalk and molecular mechanisms targeting specific hubs in DS models that should become central to better understanding of DS and improving the development of therapies.
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Affiliation(s)
- Arnaud Duchon
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Maria Del Mar Muniz Moreno
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Sandra Martin Lorenzo
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Marcia Priscilla Silva de Souza
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Claire Chevalier
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Valérie Nalesso
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Hamid Meziane
- Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), CELPHEDIA, PHENOMIN, 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | | | - Vincent Noblet
- Université de Strasbourg, CNRS UMR 7357, ICube, FMTS, 67000 Strasbourg, France
| | - Jean-Paul Armspach
- Université de Strasbourg, CNRS UMR 7357, ICube, FMTS, 67000 Strasbourg, France
| | - Veronique Brault
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
| | - Yann Herault
- Université de Strasbourg, CNRS, INSERM, Institut de Génétique et de Biologie Moléculaire et Cellulaire (IGBMC), department of translational medicine and neurogenetics 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France.,Université de Strasbourg, CNRS, INSERM, Institut Clinique de la Souris (ICS), CELPHEDIA, PHENOMIN, 1 rue Laurent Fries, 67404 Illkirch Graffenstaden, France
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DLG4-related synaptopathy: a new rare brain disorder. Genet Med 2021; 23:888-899. [PMID: 33597769 DOI: 10.1038/s41436-020-01075-9] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 12/12/2020] [Accepted: 12/15/2020] [Indexed: 11/08/2022] Open
Abstract
PURPOSE Postsynaptic density protein-95 (PSD-95), encoded by DLG4, regulates excitatory synaptic function in the brain. Here we present the clinical and genetic features of 53 patients (42 previously unpublished) with DLG4 variants. METHODS The clinical and genetic information were collected through GeneMatcher collaboration. All the individuals were investigated by local clinicians and the gene variants were identified by clinical exome/genome sequencing. RESULTS The clinical picture was predominated by early onset global developmental delay, intellectual disability, autism spectrum disorder, and attention deficit-hyperactivity disorder, all of which point to a brain disorder. Marfanoid habitus, which was previously suggested to be a characteristic feature of DLG4-related phenotypes, was found in only nine individuals and despite some overlapping features, a distinct facial dysmorphism could not be established. Of the 45 different DLG4 variants, 39 were predicted to lead to loss of protein function and the majority occurred de novo (four with unknown origin). The six missense variants identified were suggested to lead to structural or functional changes by protein modeling studies. CONCLUSION The present study shows that clinical manifestations associated with DLG4 overlap with those found in other neurodevelopmental disorders of synaptic dysfunction; thus, we designate this group of disorders as DLG4-related synaptopathy.
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Niu M, Zheng N, Wang Z, Gao Y, Luo X, Chen Z, Fu X, Wang Y, Wang T, Liu M, Yao T, Yao P, Meng J, Zhou Y, Ge Y, Wang Z, Ma Q, Xu H, Zhang YW. RAB39B Deficiency Impairs Learning and Memory Partially Through Compromising Autophagy. Front Cell Dev Biol 2020; 8:598622. [PMID: 33364235 PMCID: PMC7753041 DOI: 10.3389/fcell.2020.598622] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Accepted: 11/16/2020] [Indexed: 12/14/2022] Open
Abstract
RAB39B is located on the X chromosome and encodes the RAB39B protein that belongs to the RAB family. Mutations in RAB39B are known to be associated with X-linked intellectual disability (XLID), Parkinson’s disease, and autism. However, the patho/physiological functions of RAB39B remain largely unknown. In the present study, we established Rab39b knockout (KO) mice, which exhibited overall normal birth rate and morphologies as wild type mice. However, Rab39b deficiency led to reduced anxiety and impaired learning and memory in 2 months old mice. Deletion of Rab39b resulted in impairments of synaptic structures and functions, with reductions in NMDA receptors in the postsynaptic density (PSD). RAB39B deficiency also compromised autophagic flux at basal level, which could be overridden by rapamycin-induced autophagy activation. Further, treatment with rapamycin partially rescued impaired memory and synaptic plasticity in Rab39b KO mice, without affecting the PSD distribution of NMDA receptors. Together, these results suggest that RAB39B plays an important role in regulating both autophagy and synapse formation, and that targeting autophagy may have potential for treating XLID caused by RAB39B loss-of-function mutations.
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Affiliation(s)
- Mengxi Niu
- Department of Neurology, The First Affiliated Hospital of Xiamen University, Xiamen, China.,Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Naizhen Zheng
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Zijie Wang
- Department of Neurosurgery, Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Yue Gao
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Xianghua Luo
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Zhicai Chen
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Xing Fu
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Yanyan Wang
- Department of Neurology, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Ting Wang
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Manqing Liu
- Department of Neurology, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Tingting Yao
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Peijie Yao
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Jian Meng
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Yunqiang Zhou
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Yunlong Ge
- Department of Neurosurgery, Xiang'an Hospital of Xiamen University, Xiamen, China
| | - Zhanxiang Wang
- Department of Neurosurgery, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Qilin Ma
- Department of Neurology, The First Affiliated Hospital of Xiamen University, Xiamen, China
| | - Huaxi Xu
- Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
| | - Yun-Wu Zhang
- Department of Neurology, The First Affiliated Hospital of Xiamen University, Xiamen, China.,Fujian Provincial Key Laboratory of Neurodegenerative Disease and Aging Research, Institute of Neuroscience, School of Medicine, Xiamen University, Xiamen, China
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Lenaerts L, Reynhout S, Verbinnen I, Laumonnier F, Toutain A, Bonnet-Brilhault F, Hoorne Y, Joss S, Chassevent AK, Smith-Hicks C, Loeys B, Joset P, Steindl K, Rauch A, Mehta SG, Chung WK, Devriendt K, Holder SE, Jewett T, Baldwin LM, Wilson WG, Towner S, Srivastava S, Johnson HF, Daumer-Haas C, Baethmann M, Ruiz A, Gabau E, Jain V, Varghese V, Al-Beshri A, Fulton S, Wechsberg O, Orenstein N, Prescott K, Childs AM, Faivre L, Moutton S, Sullivan JA, Shashi V, Koudijs SM, Heijligers M, Kivuva E, McTague A, Male A, van Ierland Y, Plecko B, Maystadt I, Hamid R, Hannig VL, Houge G, Janssens V. The broad phenotypic spectrum of PPP2R1A-related neurodevelopmental disorders correlates with the degree of biochemical dysfunction. Genet Med 2020; 23:352-362. [PMID: 33106617 PMCID: PMC7862067 DOI: 10.1038/s41436-020-00981-2] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 09/15/2020] [Accepted: 09/17/2020] [Indexed: 12/31/2022] Open
Abstract
Purpose Neurodevelopmental disorders (NDD) caused by protein phosphatase 2A (PP2A) dysfunction have mainly been associated with de novo variants in PPP2R5D and PPP2CA, and more rarely in PPP2R1A. Here, we aimed to better understand the latter by characterizing 30 individuals with de novo and often recurrent variants in this PP2A scaffolding Aα subunit. Methods Most cases were identified through routine clinical diagnostics. Variants were biochemically characterized for phosphatase activity and interaction with other PP2A subunits. Results We describe 30 individuals with 16 different variants in PPP2R1A, 21 of whom had variants not previously reported. The severity of developmental delay ranged from mild learning problems to severe intellectual disability (ID) with or without epilepsy. Common features were language delay, hypotonia, and hypermobile joints. Macrocephaly was only seen in individuals without B55α subunit-binding deficit, and these patients had less severe ID and no seizures. Biochemically more disruptive variants with impaired B55α but increased striatin binding were associated with profound ID, epilepsy, corpus callosum hypoplasia, and sometimes microcephaly. Conclusion We significantly expand the phenotypic spectrum of PPP2R1A-related NDD, revealing a broader clinical presentation of the patients and that the functional consequences of the variants are more diverse than previously reported.
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Affiliation(s)
- Lisa Lenaerts
- Laboratory of Protein Phosphorylation & Proteomics, Department of Cellular & Molecular Medicine, University of Leuven (KU Leuven), Leuven, Belgium
| | - Sara Reynhout
- Laboratory of Protein Phosphorylation & Proteomics, Department of Cellular & Molecular Medicine, University of Leuven (KU Leuven), Leuven, Belgium.,KU Leuven Brain Institute (LBI), Leuven, Belgium
| | - Iris Verbinnen
- Laboratory of Protein Phosphorylation & Proteomics, Department of Cellular & Molecular Medicine, University of Leuven (KU Leuven), Leuven, Belgium
| | - Frédéric Laumonnier
- UMR1253, iBrain, University of Tours, INSERM, Tours, France.,Service de Génétique, Centre Hospitalier Régional Universitaire, Tours, France
| | - Annick Toutain
- UMR1253, iBrain, University of Tours, INSERM, Tours, France.,Service de Génétique, Centre Hospitalier Régional Universitaire, Tours, France
| | - Frédérique Bonnet-Brilhault
- UMR1253, iBrain, University of Tours, INSERM, Tours, France.,Excellence Center in Autism and Neurodevelopmental Disorders, Centre Hospitalier Régional Universitaire, Tours, France
| | - Yana Hoorne
- Laboratory of Protein Phosphorylation & Proteomics, Department of Cellular & Molecular Medicine, University of Leuven (KU Leuven), Leuven, Belgium
| | - Shelagh Joss
- West of Scotland Centre for Genomic Medicine, Queen Elizabeth University Hospital, Glasgow, UK
| | | | | | - Bart Loeys
- Center for Medical Genetics, University of Antwerp/Antwerp University Hospital, Antwerp, Belgium
| | - Pascal Joset
- Institute of Medical Genetics, University of Zurich, Schlieren, Zurich, Switzerland
| | - Katharina Steindl
- Institute of Medical Genetics, University of Zurich, Schlieren, Zurich, Switzerland
| | - Anita Rauch
- Institute of Medical Genetics, University of Zurich, Schlieren, Zurich, Switzerland
| | - Sarju G Mehta
- East Anglian Regional Medical Genetics Service, Addenbrookes Hospital, Cambridge, UK
| | - Wendy K Chung
- Columbia University Medical Center, New York, NY, USA
| | - Koenraad Devriendt
- Department of Human Genetics, University of Leuven (KU Leuven), Leuven, Belgium
| | - Susan E Holder
- North West Thames Regional Genetics Service, Harrow, London, UK
| | - Tamison Jewett
- Wake Forest School of Medicine, Wake Forest University, Winston-Salem, NC, USA
| | - Lauren M Baldwin
- Wake Forest School of Medicine, Wake Forest University, Winston-Salem, NC, USA
| | - William G Wilson
- Department of Pediatrics, University of Virginia, Charlottesville, VA, USA
| | - Shelley Towner
- Department of Pediatrics, University of Virginia, Charlottesville, VA, USA
| | | | - Hannah F Johnson
- Department of Neurology, Boston Children's Hospital, Boston, MA, USA
| | | | - Martina Baethmann
- Pediatric Neurology, Sozialpädiatrisches Zentrum, Klinikum Dritter Orden München, Munich, Germany
| | - Anna Ruiz
- Genetics Laboratory, UDIAT-Centre Diagnòstic, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc Taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain
| | - Elisabeth Gabau
- Paediatric Unit, Parc Taulí Hospital Universitari, Institut d'Investigació i Innovació Parc taulí I3PT, Universitat Autònoma de Barcelona, Sabadell, Spain
| | - Vani Jain
- All Wales Medical Genomics Service, University Hospital of Wales, Cardiff, UK
| | - Vinod Varghese
- All Wales Medical Genomics Service, University Hospital of Wales, Cardiff, UK
| | - Ali Al-Beshri
- Internal Medicine & Medical Genetics, University of Alabama at Birmingham, Birmingham, AL, USA
| | | | - Oded Wechsberg
- Pediatric Genetics Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.,Maccabi Healthcare Services, Tel Aviv, Israel
| | - Naama Orenstein
- Pediatric Genetics Unit, Schneider Children's Medical Center of Israel, Petach Tikva, Israel.,Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Katrina Prescott
- Yorkshire Regional Genetics Department, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Anne-Marie Childs
- Department of Neurology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - Laurence Faivre
- Centre de référence Anomalies du Développement et Syndromes malformatifs, FHU TRANSLAD, UMR1231 GAD, CHU Dijon et Université de Bourgogne, Dijon, France
| | - Sébastien Moutton
- CPDPN, Pôle mère enfant, Maison de Santé Bordeaux Bagatelle, Talence, France
| | - Jennifer A Sullivan
- Department of Pediatrics, Division of Medical Genetics, Duke University Medical Center, Durham, NC, USA
| | - Vandana Shashi
- Department of Pediatrics, Division of Medical Genetics, Duke University Medical Center, Durham, NC, USA
| | | | - Malou Heijligers
- Department of Clinical Genetics, Maastricht UMC+, Maastricht, The Netherlands
| | - Emma Kivuva
- Royal Devon & Exeter NHS Foundation Trust, Exeter, UK
| | - Amy McTague
- Developmental Neurosciences, UCL Great Ormond Street Institute of Child Health, London, UK.,Department of Neurology, Great Ormond Street Hospital, London, UK
| | - Alison Male
- Developmental Neurosciences, UCL Great Ormond Street Institute of Child Health, London, UK.,Department of Neurology, Great Ormond Street Hospital, London, UK
| | | | - Barbara Plecko
- Division of General Pediatrics, Department of Pediatrics and Adolescent Medicine, Medical University of Graz, Graz, Austria
| | - Isabelle Maystadt
- Centre de Génétique Humaine, Institut de Pathologie et de Génétique, Gosselies, Belgium
| | - Rizwan Hamid
- Vanderbilt University Medical Center, Nashville, TN, USA
| | | | - Gunnar Houge
- Department of Medical Genetics, Haukeland University Hospital, Bergen, Norway.
| | - Veerle Janssens
- Laboratory of Protein Phosphorylation & Proteomics, Department of Cellular & Molecular Medicine, University of Leuven (KU Leuven), Leuven, Belgium. .,KU Leuven Brain Institute (LBI), Leuven, Belgium.
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Delmotte Q, Hamze M, Medina I, Buhler E, Zhang J, Belgacem YH, Porcher C. Smoothened receptor signaling regulates the developmental shift of GABA polarity in rat somatosensory cortex. J Cell Sci 2020; 133:jcs247700. [PMID: 32989040 PMCID: PMC7595691 DOI: 10.1242/jcs.247700] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 09/12/2020] [Indexed: 02/05/2023] Open
Abstract
Sonic hedgehog (Shh) and its patched-smoothened receptor complex control a variety of functions in the developing central nervous system, such as neural cell proliferation and differentiation. Recently, Shh signaling components have been found to be expressed at the synaptic level in the postnatal brain, suggesting a potential role in the regulation of synaptic transmission. Using in utero electroporation of constitutively active and negative-phenotype forms of the Shh signal transducer smoothened (Smo), we studied the role of Smo signaling in the development and maturation of GABAergic transmission in the somatosensory cortex. Our results show that enhancing Smo activity during development accelerates the shift from depolarizing to hyperpolarizing GABA in a manner dependent on functional expression of potassium-chloride cotransporter type 2 (KCC2, also known as SLC12A5). On the other hand, blocking Smo activity maintains the GABA response in a depolarizing state in mature cortical neurons, resulting in altered chloride homeostasis and increased seizure susceptibility. This study reveals unexpected functions of Smo signaling in the regulation of chloride homeostasis, through control of KCC2 cell-surface stability, and the timing of the GABA excitatory-to-inhibitory shift in brain maturation.
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Affiliation(s)
- Quentin Delmotte
- Aix-Marseille University, Parc Scientifique de Luminy, 13273, Marseille, France
- INSERM (Institut National de la Santé et de la Recherche Médicale) Unité 1249, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED (Institut de Neurobiologie de la Méditerranée), Parc Scientifique de Luminy, 13273 Marseille, France
| | - Mira Hamze
- Aix-Marseille University, Parc Scientifique de Luminy, 13273, Marseille, France
- INSERM (Institut National de la Santé et de la Recherche Médicale) Unité 1249, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED (Institut de Neurobiologie de la Méditerranée), Parc Scientifique de Luminy, 13273 Marseille, France
| | - Igor Medina
- Aix-Marseille University, Parc Scientifique de Luminy, 13273, Marseille, France
- INSERM (Institut National de la Santé et de la Recherche Médicale) Unité 1249, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED (Institut de Neurobiologie de la Méditerranée), Parc Scientifique de Luminy, 13273 Marseille, France
| | - Emmanuelle Buhler
- INSERM (Institut National de la Santé et de la Recherche Médicale) Unité 1249, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- Plateforme Post-Génomique, INMED, 13273 Marseille, France
| | - Jinwei Zhang
- Institute of Biomedical and Clinical Sciences, Medical School, College of Medicine and Health, University of Exeter, Hatherly Laboratories, Exeter EX4 4PS, UK
| | - Yesser H Belgacem
- INSERM (Institut National de la Santé et de la Recherche Médicale) Unité 1249, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED (Institut de Neurobiologie de la Méditerranée), Parc Scientifique de Luminy, 13273 Marseille, France
| | - Christophe Porcher
- Aix-Marseille University, Parc Scientifique de Luminy, 13273, Marseille, France
- INSERM (Institut National de la Santé et de la Recherche Médicale) Unité 1249, Marseille, Parc Scientifique de Luminy, 13273 Marseille, France
- INMED (Institut de Neurobiologie de la Méditerranée), Parc Scientifique de Luminy, 13273 Marseille, France
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Wan YW, Al-Ouran R, Mangleburg CG, Perumal TM, Lee TV, Allison K, Swarup V, Funk CC, Gaiteri C, Allen M, Wang M, Neuner SM, Kaczorowski CC, Philip VM, Howell GR, Martini-Stoica H, Zheng H, Mei H, Zhong X, Kim JW, Dawson VL, Dawson TM, Pao PC, Tsai LH, Haure-Mirande JV, Ehrlich ME, Chakrabarty P, Levites Y, Wang X, Dammer EB, Srivastava G, Mukherjee S, Sieberts SK, Omberg L, Dang KD, Eddy JA, Snyder P, Chae Y, Amberkar S, Wei W, Hide W, Preuss C, Ergun A, Ebert PJ, Airey DC, Mostafavi S, Yu L, Klein HU, Carter GW, Collier DA, Golde TE, Levey AI, Bennett DA, Estrada K, Townsend TM, Zhang B, Schadt E, De Jager PL, Price ND, Ertekin-Taner N, Liu Z, Shulman JM, Mangravite LM, Logsdon BA. Meta-Analysis of the Alzheimer's Disease Human Brain Transcriptome and Functional Dissection in Mouse Models. Cell Rep 2020; 32:107908. [PMID: 32668255 PMCID: PMC7428328 DOI: 10.1016/j.celrep.2020.107908] [Citation(s) in RCA: 168] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Revised: 06/01/2020] [Accepted: 06/24/2020] [Indexed: 12/14/2022] Open
Abstract
We present a consensus atlas of the human brain transcriptome in Alzheimer's disease (AD), based on meta-analysis of differential gene expression in 2,114 postmortem samples. We discover 30 brain coexpression modules from seven regions as the major source of AD transcriptional perturbations. We next examine overlap with 251 brain differentially expressed gene sets from mouse models of AD and other neurodegenerative disorders. Human-mouse overlaps highlight responses to amyloid versus tau pathology and reveal age- and sex-dependent expression signatures for disease progression. Human coexpression modules enriched for neuronal and/or microglial genes broadly overlap with mouse models of AD, Huntington's disease, amyotrophic lateral sclerosis, and aging. Other human coexpression modules, including those implicated in proteostasis, are not activated in AD models but rather following other, unexpected genetic manipulations. Our results comprise a cross-species resource, highlighting transcriptional networks altered by human brain pathophysiology and identifying correspondences with mouse models for AD preclinical studies.
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Affiliation(s)
- Ying-Wooi Wan
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Jan and Dan Duncan Neurologic Research Institute, Texas Children's Hospital, Houston, TX 77030, USA
| | - Rami Al-Ouran
- Jan and Dan Duncan Neurologic Research Institute, Texas Children's Hospital, Houston, TX 77030, USA; Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA
| | - Carl G Mangleburg
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Jan and Dan Duncan Neurologic Research Institute, Texas Children's Hospital, Houston, TX 77030, USA
| | | | - Tom V Lee
- Jan and Dan Duncan Neurologic Research Institute, Texas Children's Hospital, Houston, TX 77030, USA; Department of Neurology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Katherine Allison
- Jan and Dan Duncan Neurologic Research Institute, Texas Children's Hospital, Houston, TX 77030, USA; Department of Neurology, Baylor College of Medicine, Houston, TX 77030, USA
| | - Vivek Swarup
- Department of Neurobiology and Behavior, University of California, Irvine, CA 92697, USA
| | - Cory C Funk
- Institute for Systems Biology, Seattle, WA 98109, USA
| | - Chris Gaiteri
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - Mariet Allen
- Mayo Clinic, Department of Neuroscience, Jacksonville, FL 32224, USA
| | - Minghui Wang
- Department of Genetics and Genomic Sciences, Mount Sinai Center for Transformative Disease Modeling, Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | | | | | | | | | | | - Hui Zheng
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Huffington Center on Aging, Baylor College of Medicine, Houston, TX 77030, USA
| | - Hongkang Mei
- Neuroscience DPU, Shanghai R&D, GlaxoSmithKline, Shanghai, China
| | - Xiaoyan Zhong
- Neuroscience DPU, Shanghai R&D, GlaxoSmithKline, Shanghai, China
| | - Jungwoo Wren Kim
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Valina L Dawson
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Physiology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Adrienne Helis Malvin & Diana Helis Henry Medical Research Foundations, New Orleans, LA 70130, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Ted M Dawson
- Neuroregeneration and Stem Cell Programs, Institute for Cell Engineering, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Solomon H. Snyder Department of Neuroscience, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Adrienne Helis Malvin & Diana Helis Henry Medical Research Foundations, New Orleans, LA 70130, USA; Department of Pharmacology and Molecular Sciences, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA; Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, MD 21205, USA
| | - Ping-Chieh Pao
- The Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Broad Institute of Harvard University and the Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Li-Huei Tsai
- The Picower Institute for Learning and Memory, Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, MA 02139, USA; Broad Institute of Harvard University and the Massachusetts Institute of Technology, Cambridge, MA 02139, USA
| | - Jean-Vianney Haure-Mirande
- Departments of Neurology and Pediatrics, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Michelle E Ehrlich
- Department of Genetics and Genomic Sciences, Mount Sinai Center for Transformative Disease Modeling, Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA; Departments of Neurology and Pediatrics, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Paramita Chakrabarty
- Evelyn F. and William L. McKnight Brain Institute, Center for Translational Research in Neurodegenerative Disease, Department of Neuroscience, University of Florida, Gainesville, FL 32610, USA
| | - Yona Levites
- Evelyn F. and William L. McKnight Brain Institute, Center for Translational Research in Neurodegenerative Disease, Department of Neuroscience, University of Florida, Gainesville, FL 32610, USA
| | - Xue Wang
- Mayo Clinic, Department of Neuroscience, Jacksonville, FL 32224, USA; Mayo Clinic, Department of Health Sciences Research, Jacksonville, FL 32224, USA
| | - Eric B Dammer
- Department of Biochemistry, Emory University School of Medicine, Atlanta, GA 30322, USA
| | | | | | | | | | | | | | | | | | - Sandeep Amberkar
- Sheffield Institute of Translational Neuroscience, University of Sheffield, Sheffield, S10 2HQ, UK; Molecular Oncology Lab, Cancer Research UK - Manchester Institute, The University of Manchester, Manchester, SK10 4TG, UK
| | - Wenbin Wei
- Sheffield Institute of Translational Neuroscience, University of Sheffield, Sheffield, S10 2HQ, UK; Department of Biosciences, Durham University, Durham, DH1 3LE, UK
| | - Winston Hide
- Sheffield Institute of Translational Neuroscience, University of Sheffield, Sheffield, S10 2HQ, UK; Beth Israel Deaconess Medical Center and Harvard Medical School, Boston, MA, USA
| | | | - Ayla Ergun
- Translational Genome Sciences, Biogen, Cambridge, MA, USA
| | - Phillip J Ebert
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA
| | - David C Airey
- Eli Lilly & Company, Lilly Corporate Center, Indianapolis, IN 46285, USA
| | | | - Lei Yu
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - Hans-Ulrich Klein
- Center for Translational & Computational Neuroimmunology, Department of Neurology and Taub Institute for the Study of Alzheimer's Disease and the Aging Brain, Columbia University Irving Medical Center, New York, NY 10032, USA; Cell Circuits Program, Broad Institute, Cambridge, MA 02142, USA
| | | | - David A Collier
- Eli Lilly & Company, Erl Wood Manor, Sunninghill Road, Windlesham, Surrey, GU20 6PH, UK
| | - Todd E Golde
- Evelyn F. and William L. McKnight Brain Institute, Center for Translational Research in Neurodegenerative Disease, Department of Neuroscience, University of Florida, Gainesville, FL 32610, USA
| | - Allan I Levey
- Department of Neurology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - David A Bennett
- Rush Alzheimer's Disease Center, Rush University Medical Center, Chicago, IL, USA
| | - Karol Estrada
- Translational Genome Sciences, Biogen, Cambridge, MA, USA
| | | | - Bin Zhang
- Department of Genetics and Genomic Sciences, Mount Sinai Center for Transformative Disease Modeling, Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Eric Schadt
- Department of Genetics and Genomic Sciences, Mount Sinai Center for Transformative Disease Modeling, Icahn Institute for Data Science and Genomic Technology, Icahn School of Medicine at Mount Sinai, One Gustave L. Levy Place, New York, NY 10029, USA
| | - Philip L De Jager
- Center for Translational & Computational Neuroimmunology, Department of Neurology and Taub Institute for the Study of Alzheimer's Disease and the Aging Brain, Columbia University Irving Medical Center, New York, NY 10032, USA; Cell Circuits Program, Broad Institute, Cambridge, MA 02142, USA
| | | | - Nilüfer Ertekin-Taner
- Mayo Clinic, Department of Neuroscience, Jacksonville, FL 32224, USA; Mayo Clinic, Department of Neurology, Jacksonville, FL 32224, USA
| | - Zhandong Liu
- Jan and Dan Duncan Neurologic Research Institute, Texas Children's Hospital, Houston, TX 77030, USA; Department of Pediatrics, Baylor College of Medicine, Houston, TX 77030, USA.
| | - Joshua M Shulman
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX 77030, USA; Jan and Dan Duncan Neurologic Research Institute, Texas Children's Hospital, Houston, TX 77030, USA; Department of Neurology, Baylor College of Medicine, Houston, TX 77030, USA; Huffington Center on Aging, Baylor College of Medicine, Houston, TX 77030, USA; Department of Neuroscience, Baylor College of Medicine, Houston, TX 77030, USA.
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45
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Fan R, Gu Z, Guang X, Marín JC, Varas V, González BA, Wheeler JC, Hu Y, Li E, Sun X, Yang X, Zhang C, Gao W, He J, Munch K, Corbett-Detig R, Barbato M, Pan S, Zhan X, Bruford MW, Dong C. Genomic analysis of the domestication and post-Spanish conquest evolution of the llama and alpaca. Genome Biol 2020; 21:159. [PMID: 32616020 PMCID: PMC7331169 DOI: 10.1186/s13059-020-02080-6] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2019] [Accepted: 06/21/2020] [Indexed: 12/28/2022] Open
Abstract
BACKGROUND Despite their regional economic importance and being increasingly reared globally, the origins and evolution of the llama and alpaca remain poorly understood. Here we report reference genomes for the llama, and for the guanaco and vicuña (their putative wild progenitors), compare these with the published alpaca genome, and resequence seven individuals of all four species to better understand domestication and introgression between the llama and alpaca. RESULTS Phylogenomic analysis confirms that the llama was domesticated from the guanaco and the alpaca from the vicuña. Introgression was much higher in the alpaca genome (36%) than the llama (5%) and could be dated close to the time of the Spanish conquest, approximately 500 years ago. Introgression patterns are at their most variable on the X-chromosome of the alpaca, featuring 53 genes known to have deleterious X-linked phenotypes in humans. Strong genome-wide introgression signatures include olfactory receptor complexes into both species, hypertension resistance into alpaca, and fleece/fiber traits into llama. Genomic signatures of domestication in the llama include male reproductive traits, while in alpaca feature fleece characteristics, olfaction-related and hypoxia adaptation traits. Expression analysis of the introgressed region that is syntenic to human HSA4q21, a gene cluster previously associated with hypertension in humans under hypoxic conditions, shows a previously undocumented role for PRDM8 downregulation as a potential transcriptional regulation mechanism, analogous to that previously reported at high altitude for hypoxia-inducible factor 1α. CONCLUSIONS The unprecedented introgression signatures within both domestic camelid genomes may reflect post-conquest changes in agriculture and the breakdown of traditional management practices.
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Affiliation(s)
- Ruiwen Fan
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi China
| | - Zhongru Gu
- CAS Key Lab of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Cardiff University – Institute of Zoology Joint Laboratory for Biocomplexity Research, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | | | - Juan Carlos Marín
- Departamento de Ciencias Básicas, Facultad de Ciencias, Universidad del Bio Bio, Chillán, Chile
| | - Valeria Varas
- Programa de Doctorado en Ciencias mención Ecología y Evolución, Escuela de Graduados, Facultad de Ciencias., Universidad Austral de Chile, Valdivia, Chile
| | - Benito A. González
- Facultad de Ciencias Forestales y de la Conservación de la Naturaleza, Universidad de Chile, Santiago, Chile
| | - Jane C. Wheeler
- CONOPA-Instituto de Investigación y Desarrollo de Camélidos Sudamericanos, Pachacamac, Lima, Peru
| | - Yafei Hu
- BGI Genomics, BGI, Shenzhen, China
| | - Erli Li
- BGI Genomics, BGI, Shenzhen, China
| | | | | | | | - Wenjun Gao
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi China
| | - Junping He
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi China
| | - Kasper Munch
- Bioinformatics Research Centre, Aarhus University, Aarhus, Denmark
| | - Russel Corbett-Detig
- Department of Biomolecular Engineering and Genomics Institute, UC Santa Cruz, Santa Cruz, CA USA
| | - Mario Barbato
- Department of Animal Science, Food and Technology – DIANA, Università Cattolica del Sacro Cuore, Piacenza, Italy
| | - Shengkai Pan
- CAS Key Lab of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Cardiff University – Institute of Zoology Joint Laboratory for Biocomplexity Research, Chinese Academy of Sciences, Beijing, China
| | - Xiangjiang Zhan
- CAS Key Lab of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences, Beijing, China
- Cardiff University – Institute of Zoology Joint Laboratory for Biocomplexity Research, Chinese Academy of Sciences, Beijing, China
- Center for Excellence in Animal Evolution and Genetics, Chinese Academy of Sciences, Kunming, China
| | - Michael W. Bruford
- Cardiff University – Institute of Zoology Joint Laboratory for Biocomplexity Research, Chinese Academy of Sciences, Beijing, China
- School of Biosciences and Sustainable Places Institute, Cardiff University, Cardiff, Wales UK
| | - Changsheng Dong
- College of Animal Science and Veterinary Medicine, Shanxi Agricultural University, Taigu, Shanxi China
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46
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Ross PJ, Zhang WB, Mok RS, Zaslavsky K, Deneault E, D’Abate L, Rodrigues DC, Yuen RK, Faheem M, Mufteev M, Piekna A, Wei W, Pasceri P, Landa RJ, Nagy A, Varga B, Salter MW, Scherer SW, Ellis J. Synaptic Dysfunction in Human Neurons With Autism-Associated Deletions in PTCHD1-AS. Biol Psychiatry 2020; 87:139-149. [PMID: 31540669 PMCID: PMC6948145 DOI: 10.1016/j.biopsych.2019.07.014] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2018] [Revised: 06/23/2019] [Accepted: 07/16/2019] [Indexed: 12/13/2022]
Abstract
BACKGROUND The Xp22.11 locus that encompasses PTCHD1, DDX53, and the long noncoding RNA PTCHD1-AS is frequently disrupted in male subjects with autism spectrum disorder (ASD), but the functional consequences of these genetic risk factors for ASD are unknown. METHODS To evaluate the functional consequences of PTCHD1 locus deletions, we generated induced pluripotent stem cells (iPSCs) from unaffected control subjects and 3 subjects with ASD with microdeletions affecting PTCHD1-AS/PTCHD1, PTCHD1-AS/DDX53, or PTCHD1-AS alone. Function of iPSC-derived cortical neurons was assessed using molecular approaches and electrophysiology. We also compiled novel and known genetic variants of the PTCHD1 locus to explore the roles of PTCHD1 and PTCHD1-AS in genetic risk for ASD and other neurodevelopmental disorders. Finally, genome editing was used to explore the functional consequences of deleting a single conserved exon of PTCHD1-AS. RESULTS iPSC-derived neurons from subjects with ASD exhibited reduced miniature excitatory postsynaptic current frequency and N-methyl-D-aspartate receptor hypofunction. We found that 35 ASD-associated deletions mapping to the PTCHD1 locus disrupted exons of PTCHD1-AS. We also found a novel ASD-associated deletion of PTCHD1-AS exon 3 and showed that exon 3 loss altered PTCHD1-AS splicing without affecting expression of the neighboring PTCHD1 coding gene. Finally, targeted disruption of PTCHD1-AS exon 3 recapitulated diminished miniature excitatory postsynaptic current frequency, supporting a role for the long noncoding RNA in the etiology of ASD. CONCLUSIONS Our genetic findings provide strong evidence that PTCHD1-AS deletions are risk factors for ASD, and human iPSC-derived neurons implicate these deletions in the neurophysiology of excitatory synapses and in ASD-associated synaptic impairment.
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Affiliation(s)
- P. Joel Ross
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada,These authors contributed equally to this work,Present address: Department of Biology, University of Prince Edward Island, Charlottetown, PE, Canada
| | - Wen-Bo Zhang
- Neuroscience & Mental Health Program, The Hospital for Sick Children, Toronto, ON, Canada,These authors contributed equally to this work
| | - Rebecca S.F. Mok
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Kirill Zaslavsky
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Eric Deneault
- Genetics & Genome Biology Program and The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON, Canada
| | - Lia D’Abate
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada,Genetics & Genome Biology Program and The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON, Canada
| | - Deivid C. Rodrigues
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Ryan K.C. Yuen
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada,Genetics & Genome Biology Program and The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON, Canada
| | - Muhammad Faheem
- Genetics & Genome Biology Program and The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON, Canada
| | - Marat Mufteev
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada,Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - Alina Piekna
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Wei Wei
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Peter Pasceri
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, Canada
| | - Rebecca J. Landa
- Center for Autism and Related Disorders, Kennedy Krieger Institute, Baltimore, MD, USA,Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Andras Nagy
- Lunenfeld-Tenenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada,Institute of Medical Science and Department of Obstetrics and Gynecology, University of Toronto, Toronto, ON, Canada
| | - Balazs Varga
- Lunenfeld-Tenenbaum Research Institute, Mount Sinai Hospital, Toronto, ON, Canada,Present address: Wellcome Trust MRC Stem Cell Institute, University of Cambridge, Cambridge UK
| | - Michael W. Salter
- Neuroscience & Mental Health Program, The Hospital for Sick Children, Toronto, ON, Canada,Department of Physiology, University of Toronto, Toronto, ON, Canada
| | - Stephen W. Scherer
- Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada,Genetics & Genome Biology Program and The Centre for Applied Genomics, The Hospital for Sick Children, Toronto, ON, Canada,McLaughlin Centre, University of Toronto, Toronto, ON, Canada
| | - James Ellis
- Developmental and Stem Cell Biology Program, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada.
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Association of genes with phenotype in autism spectrum disorder. Aging (Albany NY) 2019; 11:10742-10770. [PMID: 31744938 PMCID: PMC6914398 DOI: 10.18632/aging.102473] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2019] [Accepted: 11/08/2019] [Indexed: 12/27/2022]
Abstract
Autism spectrum disorder (ASD) is a genetic heterogeneous neurodevelopmental disorder that is characterized by impairments in social interaction and speech development and is accompanied by stereotypical behaviors such as body rocking, hand flapping, spinning objects, sniffing and restricted behaviors. The considerable significance of the genetics associated with autism has led to the identification of many risk genes for ASD used for the probing of ASD specificity and shared cognitive features over the past few decades. Identification of ASD risk genes helps to unravel various genetic variants and signaling pathways which are involved in ASD. This review highlights the role of ASD risk genes in gene transcription and translation regulation processes, as well as neuronal activity modulation, synaptic plasticity, disrupted key biological signaling pathways, and the novel candidate genes that play a significant role in the pathophysiology of ASD. The current emphasis on autism spectrum disorders has generated new opportunities in the field of neuroscience, and further advancements in the identification of different biomarkers, risk genes, and genetic pathways can help in the early diagnosis and development of new clinical and pharmacological treatments for ASD.
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48
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Murakami Y, Imamura Y, Saito K, Sakai D, Motoyama J. Altered kynurenine pathway metabolites in a mouse model of human attention-deficit hyperactivity/autism spectrum disorders: A potential new biological diagnostic marker. Sci Rep 2019; 9:13182. [PMID: 31515500 PMCID: PMC6742629 DOI: 10.1038/s41598-019-49781-y] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2019] [Accepted: 08/29/2019] [Indexed: 11/17/2022] Open
Abstract
Deleterious mutations in patchd1 domain containing 1 (PTCHD1) gene have been identified in patients with intellectual disability and/or autism spectrum disorder (ASD). To clarify the causal relationship between Ptchd1 deficiency and behavioral defects relevant to neurodevelopmental disorders, we generated global Ptchd1 knockout (KO) mice. Ptchd1 KO mice displayed hyperlocomotion, increased impulsivity, and lower recognition memory, which resemble attention-deficit hyperactivity disorder (ADHD)-like behaviors. Acute or chronic treatment with atomoxetine ameliorated almost all behavioral deficits in Pthcd1 KO mice. We next determined possible involvement of the kynurenine pathway (KP) metabolites in neurodevelopmental disorders in Ptchd1 KO mice and assessed the potential of KP metabolites as biomarkers for ADHD and/or ASD. Ptchd1 KO mice showed drastic changes in KP metabolite concentrations in the serum and the brain, indicating that the activated KP is associated with ADHD-like behaviors. Our findings indicate that Ptchd1 KO mice can be used as an animal model of human ADHD and/or ASD, and KP metabolites are potential diagnostic biomarkers for neurodevelopmental disorders.
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Affiliation(s)
- Yuki Murakami
- Organization for Research Initiatives and Development, Doshisha University, Kyoto, 610-0394, Japan. .,Department of Hygiene and Public Health, Kansai Medical University, Hirakata, 573-1010, Osaka, Japan.
| | - Yukio Imamura
- Organization for Research Initiatives and Development, Doshisha University, Kyoto, 610-0394, Japan.,Department of Traumatology and Acute Critical Medicine, Osaka University Graduate School of Medicine, Suita, 565-0871, Osaka, Japan
| | - Kuniaki Saito
- Department of Disease Control and Prevention, Fujita Health University Graduate School of Health Sciences, Toyoake, 470-1192, Japan
| | - Daisuke Sakai
- Organization for Research Initiatives and Development, Doshisha University, Kyoto, 610-0394, Japan.,Division of General Education, Biology, Kanazawa Medical University, Kanazawa, 920-0293, Japan
| | - Jun Motoyama
- Laboratory of Development Neurobiology, Graduate School of Brain Science, Doshisha University, Kyoto, 610-0394, Japan
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RPS23RG1 Is Required for Synaptic Integrity and Rescues Alzheimer's Disease-Associated Cognitive Deficits. Biol Psychiatry 2019; 86:171-184. [PMID: 30292394 PMCID: PMC6389446 DOI: 10.1016/j.biopsych.2018.08.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/19/2018] [Revised: 08/09/2018] [Accepted: 08/15/2018] [Indexed: 11/22/2022]
Abstract
BACKGROUND Although synaptic impairment is a prerequisite to cognitive deficiencies in Alzheimer's disease (AD), mechanisms underlying the dysregulation of essential synaptic scaffolding components and their integrity remain elusive. RPS23RG1 is a newly identified protein implicated in AD. However, the physiological function of RPS23RG1 has yet to be determined. METHODS We investigated the role of RPS23RG1 in maintaining synaptic structure and function in cell cultures and in Rps23rg1 knockout mice and determined whether targeting RPS23RG1-mediated pathways has therapeutic potential in APP/PS1 AD model mice. RESULTS Deletion of the Rps23rg1 gene resulted in severe memory deficits and impairment of postsynaptic structure and function, with marked reductions in postsynaptic densities-93 and -95 (PSD-93 and PSD-95) levels. RPS23RG1 interacted with PSD-93/PSD-95 through its intracellular domain, consequently sequestering PSD-93/PSD-95 from murine double minute 2-mediated ubiquitination and degradation, thereby maintaining synaptic function. Restoration of PSD-93/PS-D95 levels reversed synaptic and memory deficits in Rps23rg1 knockout mice. We further observed attenuated RPS23RG1 expression in human AD, which positively correlated with PSD-93/PSD-95 levels. Importantly, an RPS23RG1-derived peptide comprising a unique PSD-93/PSD-95 interaction motif rescued synaptic and cognitive defects in Rps23rg1 knockout and AD mouse models. CONCLUSIONS Our results reveal a role for RPS23RG1 in maintaining synaptic integrity and function and provide a new mechanism for synaptic dysfunction in AD pathogenesis. This demonstrates that RPS23RG1-mediated pathways show good therapeutic potential in AD intervention.
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Li PJ, Guo YQ, Ding PY, Liu RB, Deng F, Feng XX, Yan WJ. Neuroprotective effects of a Smoothened receptor agonist against postoperative cognitive dysfunction by promoting autophagy in the dentate gyrus of aged rats. Neurol Res 2019; 41:867-874. [PMID: 31221056 DOI: 10.1080/01616412.2019.1628411] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Objectives: To investigate the effect of purmorphamine (PUR), a Shh co-receptor Smoothened (Smo) agonist, on postoperative cognitive dysfunction (POCD) rat models. Methods: Eighteen-month-old male Sprague-Dawley rats were subjected to intramedullary fixation of a tibial fracture with 7% chloral hydrate anesthesia to mimic human clinical surgery. PUR was administered via an intraperitoneal injection at a dose of 15mg/kg/day for 3 consecutive days at 6 h after surgery. The aged rats were sacrificed after performing a Morris water maze test 1, 3, and 7 days postoperatively to evaluate the expression of related proteins at the appointed time. Results: Compared to the POCD + vehicle group and sham + PUR group, the POCD + PUR group restored neurological deficit (P = 0.01). PUR administration induced upregulation of Shh expression on postoperative day 1 (P = 0.02), which continued on the third day (P = 0.008) but dropped by the 7th day (P = 0.03). Immunofluorescent analysis, similar to western blot analysis, showed a significant increase in the autophagy-marker LC3 (P = 0.006) as well as p62 degradation (P = 0.000) in the dentate gyrus of the aged rats (P = 0.000) after PUR treatment. Importantly, LC3 was mainly found in the presynaptic and postsynaptic membranes of the hippocampus. Conclusions: These results indicate a link between Shh and autophagy in the rat model of POCD, providing new insights into Shh signaling pathway-mediated mechanisms of neuroprotection and cognitive repair after POCD. It also provides a potential entry point for the development of clinical drugs.
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Affiliation(s)
- Pei-Jun Li
- Department of Anesthesiology, Gansu Province People's Hospital , LanZhou , China
| | - Ying-Qiang Guo
- Department of Anesthesiology, Gansu Province People's Hospital , LanZhou , China
| | - Pei-Yan Ding
- Department of Anesthesiology, Gansu Province People's Hospital , LanZhou , China
| | - Ruo-Bing Liu
- Department of Anesthesiology, Gansu Province People's Hospital , LanZhou , China
| | - Fei Deng
- Department of Anesthesiology, Gansu Province People's Hospital , LanZhou , China
| | - Xiao-Xue Feng
- Department of Anesthesiology, Gansu Province People's Hospital , LanZhou , China
| | - Wen-Jun Yan
- Department of Anesthesiology, Gansu Province People's Hospital , LanZhou , China.,Lanzhou University , LanZhou , China
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