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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 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] [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 , Exeter EX2 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 , Exeter EX2 5DW, UK
| | - Jan J Sprengers
- Department of Translational Neuroscience, UMC Utrecht Brain Center, UMC Utrecht , Utrecht 3508 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 , Utrecht 3508 AB, The Netherlands
| | - Dominique Fäβler
- Institute for Pharmacy and Molecular Biotechnology (IPMB), Functional Genomics, University of Heidelberg , Heidelberg 69120, Germany
| | - Annika Mehr
- Institute for Pharmacy and Molecular Biotechnology (IPMB), Functional Genomics, University of Heidelberg , Heidelberg 69120, Germany
| | - Owen J R Jones
- University of Exeter Medical School, University of Exeter , Exeter EX2 5DW, UK
| | - Aurimas Kudzinskas
- University of Exeter Medical School, University of Exeter , Exeter EX2 5DW, UK
| | - Josan Gandawijaya
- University of Exeter Medical School, University of Exeter , Exeter EX2 5DW, UK
| | - Ulrike C Müller
- Institute for Pharmacy and Molecular Biotechnology (IPMB), Functional Genomics, University of Heidelberg , Heidelberg 69120, Germany
| | - Martien J H Kas
- Department of Translational Neuroscience, UMC Utrecht Brain Center, UMC Utrecht , Utrecht 3508 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 , Utrecht 3508 AB, The Netherlands
| | - Asami Oguro-Ando
- University of Exeter Medical School, University of Exeter , Exeter EX2 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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Dauar MT, Picard C, Labonté A, Breitner J, Rosa-Neto P, Villeneuve S, Poirier J. Contactin 5 and Apolipoproteins Interplay in Alzheimer's Disease. J Alzheimers Dis 2024; 98:1361-1375. [PMID: 38578887 DOI: 10.3233/jad-231003] [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] [Indexed: 04/07/2024]
Abstract
Background Apolipoproteins and contactin 5 are proteins associated with Alzheimer's disease (AD) pathophysiology. Apolipoproteins act on transport and clearance of cholesterol and phospholipids during synaptic turnover and terminal proliferation. Contactin 5 is a neuronal membrane protein involved in key processes of neurodevelopment. Objective To investigate the interactions between contactin 5 and apolipoproteins in AD, and the role of these proteins in response to neuronal damage. Methods Apolipoproteins (measured by Luminex), contactin 5 (measured by Olink's proximity extension assay), and cholesterol (measured by liquid chromatography mass spectrometry) were assessed in the cerebrospinal fluid (CSF) and plasma of cognitively unimpaired participants (n = 93). Gene expression was measured using polymerase chain reaction in the frontal cortex of autopsied-confirmed AD (n = 57) and control subjects (n = 31) and in the hippocampi of mice following entorhinal cortex lesions. Results Contactin 5 positively correlated with apolipoproteins B (p = 5.4×10-8), D (p = 1.86×10-4), E (p = 2.92×10-9), J (p = 2.65×10-9), and with cholesterol (p = 0.0096) in the CSF, and with cholesterol (p = 0.02), HDL (p = 0.0143), and LDL (p = 0.0121) in the plasma. Negative correlations were seen between CNTN5, APOB (p = 0.034) and APOE (p = 0.015) mRNA levels in the brains of control subjects. In the mouse model, apoe and apoj gene expression increased during the reinnervation phase (p < 0.05), while apob (p = 0.023) and apod (p = 0.006) increased in the deafferentation stage. Conclusions Extensive interactions were observed between contactin 5 and apolipoproteins and cholesterol, possibly due to neuronal damage. The alterations in gene expression of apolipoproteins suggest a role in axonal, terminal, and synaptic remodeling in response to entorhinal cortex damage.
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Affiliation(s)
- Marina Tedeschi Dauar
- Douglas Mental Health University Institute, Montréal, Canada
- Centre for the Studies in the Prevention of Alzheimer's Disease, Montréal, Canada
- McGill University, Montreal, Canada
- CAPES Foundation, Ministry of Education of Brazil, Brasília, Brazil
| | - Cynthia Picard
- Douglas Mental Health University Institute, Montréal, Canada
- Centre for the Studies in the Prevention of Alzheimer's Disease, Montréal, Canada
| | - Anne Labonté
- Douglas Mental Health University Institute, Montréal, Canada
- Centre for the Studies in the Prevention of Alzheimer's Disease, Montréal, Canada
| | - John Breitner
- Douglas Mental Health University Institute, Montréal, Canada
- Centre for the Studies in the Prevention of Alzheimer's Disease, Montréal, Canada
- McGill University, Montreal, Canada
- Department of Psychiatry, McGill University, Montreal, Canada
| | - Pedro Rosa-Neto
- McGill University, Montreal, Canada
- Translational Neuroimaging Laboratory, McGill University Research Centre for Studies in Aging, Alzheimer's Disease Research Unit, Douglas Research Institute, Verdun, Canada
- Department of Neurology and Neurosurgery, McGill University, Montréal, Canada
| | - Sylvia Villeneuve
- Douglas Mental Health University Institute, Montréal, Canada
- Centre for the Studies in the Prevention of Alzheimer's Disease, Montréal, Canada
- McGill University, Montreal, Canada
- Department of Psychiatry, McGill University, Montreal, Canada
| | - Judes Poirier
- Douglas Mental Health University Institute, Montréal, Canada
- Centre for the Studies in the Prevention of Alzheimer's Disease, Montréal, Canada
- McGill University, Montreal, Canada
- Department of Psychiatry, McGill University, Montreal, Canada
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Kaplow IM, Lawler AJ, Schäffer DE, Srinivasan C, Sestili HH, Wirthlin ME, Phan BN, Prasad K, Brown AR, Zhang X, Foley K, Genereux DP, Karlsson EK, Lindblad-Toh K, Meyer WK, Pfenning AR, Andrews G, Armstrong JC, Bianchi M, Birren BW, Bredemeyer KR, Breit AM, Christmas MJ, Clawson H, Damas J, Di Palma F, Diekhans M, Dong MX, Eizirik E, Fan K, Fanter C, Foley NM, Forsberg-Nilsson K, Garcia CJ, Gatesy J, Gazal S, Genereux DP, Goodman L, Grimshaw J, Halsey MK, Harris AJ, Hickey G, Hiller M, Hindle AG, Hubley RM, Hughes GM, Johnson J, Juan D, Kaplow IM, Karlsson EK, Keough KC, Kirilenko B, Koepfli KP, Korstian JM, Kowalczyk A, Kozyrev SV, Lawler AJ, Lawless C, Lehmann T, Levesque DL, Lewin HA, Li X, Lind A, Lindblad-Toh K, Mackay-Smith A, Marinescu VD, Marques-Bonet T, Mason VC, Meadows JRS, Meyer WK, Moore JE, Moreira LR, Moreno-Santillan DD, Morrill KM, Muntané G, Murphy WJ, Navarro A, Nweeia M, Ortmann S, Osmanski A, Paten B, Paulat NS, Pfenning AR, Phan BN, Pollard KS, Pratt HE, Ray DA, Reilly SK, Rosen JR, Ruf I, Ryan L, Ryder OA, Sabeti PC, Schäffer DE, Serres A, Shapiro B, Smit AFA, Springer M, Srinivasan C, Steiner C, Storer JM, Sullivan KAM, Sullivan PF, Sundström E, Supple MA, Swofford R, Talbot JE, Teeling E, Turner-Maier J, Valenzuela A, Wagner F, Wallerman O, Wang C, Wang J, Weng Z, Wilder AP, Wirthlin ME, Xue JR, Zhang X. Relating enhancer genetic variation across mammals to complex phenotypes using machine learning. Science 2023; 380:eabm7993. [PMID: 37104615 DOI: 10.1126/science.abm7993] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
Protein-coding differences between species often fail to explain phenotypic diversity, suggesting the involvement of genomic elements that regulate gene expression such as enhancers. Identifying associations between enhancers and phenotypes is challenging because enhancer activity can be tissue-dependent and functionally conserved despite low sequence conservation. We developed the Tissue-Aware Conservation Inference Toolkit (TACIT) to associate candidate enhancers with species' phenotypes using predictions from machine learning models trained on specific tissues. Applying TACIT to associate motor cortex and parvalbumin-positive interneuron enhancers with neurological phenotypes revealed dozens of enhancer-phenotype associations, including brain size-associated enhancers that interact with genes implicated in microcephaly or macrocephaly. TACIT provides a foundation for identifying enhancers associated with the evolution of any convergently evolved phenotype in any large group of species with aligned genomes.
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Affiliation(s)
- Irene M Kaplow
- Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
- Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Alyssa J Lawler
- Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA, USA
- Department of Biology, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Daniel E Schäffer
- Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Chaitanya Srinivasan
- Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Heather H Sestili
- Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Morgan E Wirthlin
- Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
- Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA, USA
| | - BaDoi N Phan
- Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
- Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA, USA
- Medical Scientist Training Program, University of Pittsburgh School of Medicine, Pittsburgh, PA, USA
| | - Kavya Prasad
- Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Ashley R Brown
- Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Xiaomeng Zhang
- Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
| | - Kathleen Foley
- Department of Biological Sciences, Lehigh University, Bethlehem, PA, USA
| | - Diane P Genereux
- Broad Institute, Cambridge, MA, USA
- Program in Bioinformatics and Integrative Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Elinor K Karlsson
- Broad Institute, Cambridge, MA, USA
- Program in Bioinformatics and Integrative Biology, University of Massachusetts Chan Medical School, Worcester, MA, USA
| | - Kerstin Lindblad-Toh
- Broad Institute, Cambridge, MA, USA
- Science for Life Laboratory, Department of Medical Biochemistry and Microbiology, Uppsala University, Uppsala, Sweden
| | - Wynn K Meyer
- Department of Biological Sciences, Lehigh University, Bethlehem, PA, USA
| | - Andreas R Pfenning
- Department of Computational Biology, Carnegie Mellon University, Pittsburgh, PA, USA
- Neuroscience Institute, Carnegie Mellon University, Pittsburgh, PA, USA
- Department of Biology, Carnegie Mellon University, Pittsburgh, PA, USA
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Zhang W, Huang H, Gui A, Mu D, Zhao T, Li H, Watanabe K, Xiao Z, Ye H, Xu Y. Contactin-6-deficient male mice exhibit the abnormal function of the accessory olfactory system and impaired reproductive behavior. Brain Behav 2023; 13:e2893. [PMID: 36860170 PMCID: PMC10097056 DOI: 10.1002/brb3.2893] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/07/2022] [Revised: 12/21/2022] [Accepted: 01/05/2023] [Indexed: 03/03/2023] Open
Abstract
INTRODUCTION Contactin-6 (CNTN6), also known as NB-3, is a neural recognition molecule and a member of the contactin subgroup of the immunoglobulin superfamily. Gene encoding CNTN6 is expressed in many regions of the neural system, including the accessory olfactory bulb (AOB) in mice. We aim to determine the effect of CNTN6 deficiency on the function of the accessory olfactory system (AOS). METHODS We examined the effect of CNTN6 deficiency on the reproductive behavior of male mice through behavioral experiments such as urine sniffing and mate preference tests. Staining and electron microscopy were used to observe the gross structure and the circuitry activity of the AOS. RESULTS Cntn6 is highly expressed in the vomeronasal organ (VNO) and the AOB, and sparsely expressed in the medial amygdala (MeA) and the medial preoptic area (MPOA), which receive direct and/or indirect projections from the AOB. Behavioral tests to examine reproductive function in mice, which is mostly controlled by the AOS, revealed that Cntn6-/- adult male mice showed less interest and reduced mating attempts toward estrous female mice in comparison with their Cntn6+/+ littermates. Although Cntn6-/- adult male mice displayed no obvious changes in the gross structure of the VNO or AOB, we observed the increased activation of granule cells in the AOB and the lower activation of neurons in the MeA and the MPOA as compared with Cntn6+/+ adult male mice. Moreover, there were an increased number of synapses between mitral cells and granule cells in the AOB of Cntn6-/- adult male mice as compared with wild-type controls. CONCLUSION These results indicate that CNTN6 deficiency affects the reproductive behavior of male mice, suggesting that CNTN6 participated in normal function of the AOS and its ablation was involved in synapse formation between mitral and granule cells in the AOB, rather than affecting the gross structure of the AOS.
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Affiliation(s)
- Wei Zhang
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, China
| | - Huiling Huang
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, China
| | - Ailing Gui
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, China
| | - Di Mu
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, China
| | - Tian Zhao
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, China
| | - Hongtao Li
- State Key Laboratory of Membrane Biology, College of Life Sciences, Peking University, Beijing, China
| | - Kazutada Watanabe
- Department of Bioengineering, Nagaoka University of Technology, Nagaoka, Niigata, Japan
| | - Zhicheng Xiao
- The Key Laboratory of Stem Cell and Regenerative Medicine, Institute of Molecular and Clinical Medicine, Kunming Medical University, Kunming, China.,Department of Anatomy and Developmental Biology, Monash University, Clayton, Melbourne, Australia
| | - Haihong Ye
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, China
| | - Yiliang Xu
- Department of Medical Genetics and Developmental Biology, School of Basic Medical Sciences, Beijing Key Laboratory of Neural Regeneration and Repair, Capital Medical University, Beijing, China
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Steinman L, Patarca R, Haseltine W. Experimental encephalomyelitis at age 90, still relevant and elucidating how viruses trigger disease. J Exp Med 2023; 220:213807. [PMID: 36652203 PMCID: PMC9880878 DOI: 10.1084/jem.20221322] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 09/28/2022] [Accepted: 01/04/2023] [Indexed: 01/19/2023] Open
Abstract
20 yr ago, a tribute appeared in this journal on the 70th anniversary of an animal model of disseminated encephalomyelitis, abbreviated EAE for experimental autoimmune encephalomyelitis. "Observations on Attempts to Produce Disseminated Encephalomyelitis in Monkeys" appeared in the Journal of Experimental Medicine on February 21, 1933. Rivers and colleagues were trying to understand what caused neurological reactions to viral infections like smallpox, vaccinia, and measles, and what triggered rare instances of encephalomyelitis to smallpox vaccines. The animal model known as EAE continues to display its remarkable utility. Recent research, since the 70th-anniversary tribute, helps explain how Epstein-Barr virus triggers multiple sclerosis via molecular mimicry to a protein known as GlialCAM. Proteins with multiple domains similar to GlialCAM, tenascin, neuregulin, contactin, and protease kinase C inhibitors are present in the poxvirus family. These observations take us a full circle back to Rivers' first paper on EAE, 90 yr ago.
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Affiliation(s)
- Lawrence Steinman
- Department of Neurology and Neurological Sciences and Pediatrics, Stanford University, Stanford, CA, USA,Correspondence to Lawrence Steinman:
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Hall J, Bray NJ. Schizophrenia Genomics: Convergence on Synaptic Development, Adult Synaptic Plasticity, or Both? Biol Psychiatry 2022; 91:709-717. [PMID: 34974922 PMCID: PMC8929434 DOI: 10.1016/j.biopsych.2021.10.018] [Citation(s) in RCA: 32] [Impact Index Per Article: 16.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Revised: 10/22/2021] [Accepted: 10/23/2021] [Indexed: 12/19/2022]
Abstract
Large-scale genomic studies of schizophrenia have identified hundreds of genetic loci conferring risk to the disorder. This progress offers an important route toward defining the biological basis of the condition and potentially developing new treatments. In this review, we discuss insights from recent genome-wide association study, copy number variant, and exome sequencing analyses of schizophrenia, together with functional genomics data from the pre- and postnatal brain, in relation to synaptic development and function. These data provide strong support for the view that synaptic dysfunction within glutamatergic and GABAergic (gamma-aminobutyric acidergic) neurons of the cerebral cortex, hippocampus, and other limbic structures is a central component of schizophrenia pathophysiology. Implicated genes and functional genomic data suggest that disturbances in synaptic connectivity associated with susceptibility to schizophrenia begin in utero but continue throughout development, with some alleles conferring risk to the disorder through direct effects on synaptic function in adulthood. This model implies that novel interventions for schizophrenia could include broad preventive approaches aimed at enhancing synaptic health during development as well as more targeted treatments aimed at correcting synaptic function in affected adults.
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Affiliation(s)
- Jeremy Hall
- MRC Centre for Neuropsychiatric Genetics & Genomics, Division of Psychological Medicine & Clinical Neurosciences, Cardiff University, Cardiff, United Kingdom; Neuroscience & Mental Health Research Institute, Cardiff University, Cardiff, United Kingdom.
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Boni C, Laudanna C, Sorio C. A Comprehensive Review of Receptor-Type Tyrosine-Protein Phosphatase Gamma (PTPRG) Role in Health and Non-Neoplastic Disease. Biomolecules 2022; 12:84. [PMID: 35053232 PMCID: PMC8773835 DOI: 10.3390/biom12010084] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2021] [Revised: 12/30/2021] [Accepted: 12/30/2021] [Indexed: 02/07/2023] Open
Abstract
Protein tyrosine phosphatase receptor gamma (PTPRG) is known to interact with and regulate several tyrosine kinases, exerting a tumor suppressor role in several type of cancers. Its wide expression in human tissues compared to the other component of group 5 of receptor phosphatases, PTPRZ expressed as a chondroitin sulfate proteoglycan in the central nervous system, has raised interest in its role as a possible regulatory switch of cell signaling processes. Indeed, a carbonic anhydrase-like domain (CAH) and a fibronectin type III domain are present in the N-terminal portion and were found to be associated with its role as [HCO3-] sensor in vascular and renal tissues and a possible interaction domain for cell adhesion, respectively. Studies on PTPRG ligands revealed the contactins family (CNTN) as possible interactors. Furthermore, the correlation of PTPRG phosphatase with inflammatory processes in different normal tissues, including cancer, and the increasing amount of its soluble form (sPTPRG) in plasma, suggest a possible role as inflammatory marker. PTPRG has important roles in human diseases; for example, neuropsychiatric and behavioral disorders and various types of cancer such as colon, ovary, lung, breast, central nervous system, and inflammatory disorders. In this review, we sum up our knowledge regarding the latest discoveries in order to appreciate PTPRG function in the various tissues and diseases, along with an interactome map of its relationship with a group of validated molecular interactors.
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Affiliation(s)
| | | | - Claudio Sorio
- Department of Medicine, General Pathology Division, University of Verona, 37134 Verona, Italy; (C.B.); (C.L.)
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Zhao R, Zhu T, Liu Q, Tian Q, Wang M, Chen J, Tong D, Yu B, Guo H, Xia K, Qiu Z, Hu Z. The autism risk gene CNTN4 modulates dendritic spine formation. Hum Mol Genet 2021; 31:207-218. [PMID: 34415325 DOI: 10.1093/hmg/ddab233] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2020] [Revised: 08/05/2021] [Accepted: 08/06/2021] [Indexed: 01/03/2023] Open
Abstract
Contactin 4 (CNTN4) is a crucial synaptic adhesion protein that belongs to the contactin superfamily. Evidence from both human genetics and mouse models suggests that synapse formation and structural deficits strongly correlate with neurodevelopmental disorders, including autism. In addition, several lines of evidence suggest that CNTN4 is associated with the risk of autism. However, the biological functions of CNTN4 in neural development and disease pathogenesis are poorly understood. In this study, we investigated whether and how CNTN4 is autonomously involved in the development of dendrites and dendritic spines in cortical neurons. Disruption of Cntn4 decreased the number of excitatory synapses, which led to a reduction in neural activity. Truncated proteins lacking the signal peptide, FnIII domains, or GPI domain lacked the ability to regulate dendritic spine formation, indicating that CNTN4 regulates dendritic spine density through a mechanism dependent on FnIII domains. Importantly, we revealed that autism-related variants lacked the ability to regulate spine density and neural activity. In conclusion, our study suggests that CNTN4 is essential for promoting dendrite growth and dendritic spine formation and that disruptive variants of CNTN4 interfere with abnormal synapse formation and may increase the risk of autism.
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Affiliation(s)
- Rongjuan Zhao
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Tengfei Zhu
- Department of Critical Care Medicine, The Third people's hospital of Shenzhen, The Second Affiliated Hospital of Southern University of Science and Technology, Shenzhen, China.,Department of Critical Care Medicine, Zhongda Hospital, School of Medicine, Southeast University, Nanjing, China
| | - Qiong Liu
- Department of Neurology & Key Laboratory of Hunan Province in Neurodegenerative Disorders, Xiangya Hospital, Central South University, Changsha 410008, China
| | - Qi Tian
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Meng Wang
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China
| | - Jingjing Chen
- Reproductive Medicine Center, Xiangya Hospital, Central South University, Changsha, Hunan, China
| | - Dali Tong
- Center for Excellence in Brain Science and Intelligence Technology, Institute of Neuroscience, State Key Laboratory of Neuroscience, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Bin Yu
- Center for Excellence in Brain Science and Intelligence Technology, Institute of Neuroscience, State Key Laboratory of Neuroscience, Chinese Academy of Sciences, Shanghai, 200031, China
| | - Hui Guo
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Animal Models for Human Diseases, Central South University, Changsha, Hunan, China
| | - Kun Xia
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Animal Models for Human Diseases, Central South University, Changsha, Hunan, China.,Center for Excellence in Brain Science and Intelligences Technology (CEBSIT), CAS Key Laboratory of Primate Neurobiology, Chinese Academy of Sciences, Shanghai, China
| | - Zilong Qiu
- Center for Excellence in Brain Science and Intelligence Technology, Institute of Neuroscience, State Key Laboratory of Neuroscience, Chinese Academy of Sciences, Shanghai, 200031, China.,Center for Excellence in Brain Science and Intelligences Technology (CEBSIT), CAS Key Laboratory of Primate Neurobiology, Chinese Academy of Sciences, Shanghai, China
| | - Zhengmao Hu
- Center for Medical Genetics & Hunan Key Laboratory of Medical Genetics, School of Life Sciences, Central South University, Changsha, Hunan, China.,Hunan Key Laboratory of Animal Models for Human Diseases, Central South University, Changsha, Hunan, China
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Wendt FR, Pathak GA, Levey DF, Nuñez YZ, Overstreet C, Tyrrell C, Adhikari K, De Angelis F, Tylee DS, Goswami A, Krystal JH, Abdallah CG, Stein MB, Kranzler HR, Gelernter J, Polimanti R. Sex-stratified gene-by-environment genome-wide interaction study of trauma, posttraumatic-stress, and suicidality. Neurobiol Stress 2021; 14:100309. [PMID: 33665242 PMCID: PMC7905234 DOI: 10.1016/j.ynstr.2021.100309] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2020] [Revised: 01/20/2021] [Accepted: 02/10/2021] [Indexed: 12/27/2022] Open
Abstract
Epidemiologic studies recognize that trauma and posttraumatic stress are associated with heightened suicidal behavior severity, yet examination of these associations from a genetic perspective is limited. We performed a multivariate gene-by-environment genome-wide interaction study (GEWIS) of suicidality in 123,633 individuals using a covariance matrix based on 26 environments related to traumatic experiences, posttraumatic stress, social support, and socioeconomic status. We discovered five suicidality risk loci, including the male-associated rs2367967 (CWC22), which replicated in an independent cohort. All GEWIS-significant loci exhibited interaction effects where at least 5% of the sample had environmental profiles conferring opposite SNP effects from the majority. We identified PTSD as a primary driving environment for GxE at suicidality risk loci. The male suicidality GEWIS was enriched for three middle-temporal-gyrus inhibitory neuron transcriptomic profiles: SCUBE- and PVALB-expressing cells (β = 0.028, p = 3.74 × 10-4), OPRM1-expressing cells (β = 0.030, p = 0.001), and SPAG17-expressing cells (β = 0.029, p = 9.80 × 10-4). Combined with gene-based analyses (CNTN5 p association = 2.38 × 10-9, p interaction = 1.51 × 10-3; PSMD14 p association = 2.04 × 10-7, p interaction = 7.76 × 10-6; HEPACAM p association = 2.43 × 10-6, p interaction = 3.82 × 10-7) including information about brain chromatin interaction profiles (UBE2E3 in male neuron p = 1.07 × 10-5), our GEWIS points to extracellular matrix biology and synaptic plasticity as biological interactors with the effects of potentially modifiable lifetime traumatic experiences on genetic risk for suicidality. Characterization of molecular basis for the effects of traumatic experience and posttraumatic stress on risk of suicidal behaviors may help to identify novel targets for which more effective treatments can be developed for use in high-risk populations.
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Affiliation(s)
- Frank R. Wendt
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
| | - Gita A. Pathak
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
| | - Daniel F. Levey
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
| | - Yaira Z. Nuñez
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
| | - Cassie Overstreet
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
- National Center for Posttraumatic Stress Disorder, Clinical Neurosciences Division, West Haven CT, 06520, USA
| | - Chelsea Tyrrell
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
| | - Keyrun Adhikari
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
| | - Flavio De Angelis
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
| | - Daniel S. Tylee
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
| | - Aranyak Goswami
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
| | - John H. Krystal
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
| | - Chadi G. Abdallah
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
| | - Murray B. Stein
- Psychiatry Service, VA San Diego Healthcare System, San Diego, CA, USA
- Departments of Psychiatry and Family Medicine & Public Health, University of California San Diego, La Jolla, CA, USA
| | - Henry R. Kranzler
- University of Pennsylvania Perelman School of Medicine, Philadelphia, PA, 19104, USA
- Crescenz Veterans Affairs Medical Center, Philadelphia, PA, 19104, USA
| | - Joel Gelernter
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
- Departments of Genetics and Neuroscience, Yale University School of Medicine, New Haven, CT, 06510, USA
| | - Renato Polimanti
- Department of Psychiatry, Yale School of Medicine, New Haven, CT, 06510, USA
- VA CT Healthcare System, West Haven, CT, 06520, USA
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10
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Cntn4, a risk gene for neuropsychiatric disorders, modulates hippocampal synaptic plasticity and behavior. Transl Psychiatry 2021; 11:106. [PMID: 33542194 PMCID: PMC7862349 DOI: 10.1038/s41398-021-01223-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/19/2020] [Revised: 01/05/2021] [Accepted: 01/18/2021] [Indexed: 12/27/2022] Open
Abstract
Neurodevelopmental and neuropsychiatric disorders, such as autism spectrum disorders (ASD), anorexia nervosa (AN), Alzheimer's disease (AD), and schizophrenia (SZ), are heterogeneous brain disorders with unknown etiology. Genome wide studies have revealed a wide variety of risk genes for these disorders, indicating a biological link between genetic signaling pathways and brain pathology. A unique risk gene is Contactin 4 (Cntn4), an Ig cell adhesion molecule (IgCAM) gene, which has been associated with several neuropsychiatric disorders including ASD, AN, AD, and SZ. Here, we investigated the Cntn4 gene knockout (KO) mouse model to determine whether memory dysfunction and altered brain plasticity, common neuropsychiatric symptoms, are affected by Cntn4 genetic disruption. For that purpose, we tested if Cntn4 genetic disruption affects CA1 synaptic transmission and the ability to induce LTP in hippocampal slices. Stimulation in CA1 striatum radiatum significantly decreased synaptic potentiation in slices of Cntn4 KO mice. Neuroanatomical analyses showed abnormal dendritic arborization and spines of hippocampal CA1 neurons. Short- and long-term recognition memory, spatial memory, and fear conditioning responses were also assessed. These behavioral studies showed increased contextual fear conditioning in heterozygous and homozygous KO mice, quantified by a gene-dose dependent increase in freezing response. In comparison to wild-type mice, Cntn4-deficient animals froze significantly longer and groomed more, indicative of increased stress responsiveness under these test conditions. Our electrophysiological, neuro-anatomical, and behavioral results in Cntn4 KO mice suggest that Cntn4 has important functions related to fear memory possibly in association with the neuronal morphological and synaptic plasticity changes in hippocampus CA1 neurons.
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11
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Gandawijaya J, Bamford RA, Burbach JPH, Oguro-Ando A. Cell Adhesion Molecules Involved in Neurodevelopmental Pathways Implicated in 3p-Deletion Syndrome and Autism Spectrum Disorder. Front Cell Neurosci 2021; 14:611379. [PMID: 33519384 PMCID: PMC7838543 DOI: 10.3389/fncel.2020.611379] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2020] [Accepted: 12/15/2020] [Indexed: 01/06/2023] Open
Abstract
Autism spectrum disorder (ASD) is characterized by impaired social interaction, language delay and repetitive or restrictive behaviors. With increasing prevalence, ASD is currently estimated to affect 0.5–2.0% of the global population. However, its etiology remains unclear due to high genetic and phenotypic heterogeneity. Copy number variations (CNVs) are implicated in several forms of syndromic ASD and have been demonstrated to contribute toward ASD development by altering gene dosage and expression. Increasing evidence points toward the p-arm of chromosome 3 (chromosome 3p) as an ASD risk locus. Deletions occurring at chromosome 3p result in 3p-deletion syndrome (Del3p), a rare genetic disorder characterized by developmental delay, intellectual disability, facial dysmorphisms and often, ASD or ASD-associated behaviors. Therefore, we hypothesize that overlapping molecular mechanisms underlie the pathogenesis of Del3p and ASD. To investigate which genes encoded in chromosome 3p could contribute toward Del3p and ASD, we performed a comprehensive literature review and collated reports investigating the phenotypes of individuals with chromosome 3p CNVs. We observe that high frequencies of CNVs occur in the 3p26.3 region, the terminal cytoband of chromosome 3p. This suggests that CNVs disrupting genes encoded within the 3p26.3 region are likely to contribute toward the neurodevelopmental phenotypes observed in individuals affected by Del3p. The 3p26.3 region contains three consecutive genes encoding closely related neuronal immunoglobulin cell adhesion molecules (IgCAMs): Close Homolog of L1 (CHL1), Contactin-6 (CNTN6), and Contactin-4 (CNTN4). CNVs disrupting these neuronal IgCAMs may contribute toward ASD phenotypes as they have been associated with key roles in neurodevelopment. CHL1, CNTN6, and CNTN4 have been observed to promote neurogenesis and neuronal survival, and regulate neuritogenesis and synaptic function. Furthermore, there is evidence that these neuronal IgCAMs possess overlapping interactomes and participate in common signaling pathways regulating axon guidance. Notably, mouse models deficient for these neuronal IgCAMs do not display strong deficits in axonal migration or behavioral phenotypes, which is in contrast to the pronounced defects in neuritogenesis and axon guidance observed in vitro. This suggests that when CHL1, CNTN6, or CNTN4 function is disrupted by CNVs, other neuronal IgCAMs may suppress behavioral phenotypes by compensating for the loss of function.
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Affiliation(s)
- Josan Gandawijaya
- University of Exeter Medical School, University of Exeter, Exeter, United Kingdom
| | - Rosemary A Bamford
- University of Exeter Medical School, University of Exeter, Exeter, United Kingdom
| | - J Peter H Burbach
- Department of Translational Neuroscience, Brain Center Rudolf Magnus, University Medical Center Utrecht and Utrecht University, Utrecht, Netherlands
| | - Asami Oguro-Ando
- University of Exeter Medical School, University of Exeter, Exeter, United Kingdom
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12
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Combined Atoh1 and Neurod1 Deletion Reveals Autonomous Growth of Auditory Nerve Fibers. Mol Neurobiol 2020; 57:5307-5323. [PMID: 32880858 DOI: 10.1007/s12035-020-02092-0] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2020] [Accepted: 08/24/2020] [Indexed: 12/24/2022]
Abstract
Ear development requires the transcription factors ATOH1 for hair cell differentiation and NEUROD1 for sensory neuron development. In addition, NEUROD1 negatively regulates Atoh1 gene expression. As we previously showed that deletion of the Neurod1 gene in the cochlea results in axon guidance defects and excessive peripheral innervation of the sensory epithelium, we hypothesized that some of the innervation defects may be a result of abnormalities in NEUROD1 and ATOH1 interactions. To characterize the interdependency of ATOH1 and NEUROD1 in inner ear development, we generated a new Atoh1/Neurod1 double null conditional deletion mutant. Through careful comparison of the effects of single Atoh1 or Neurod1 gene deletion with combined double Atoh1 and Neurod1 deletion, we demonstrate that NEUROD1-ATOH1 interactions are not important for the Neurod1 null innervation phenotype. We report that neurons lacking Neurod1 can innervate the flat epithelium without any sensory hair cells or supporting cells left after Atoh1 deletion, indicating that neurons with Neurod1 deletion do not require the presence of hair cells for axon growth. Moreover, transcriptome analysis identified genes encoding axon guidance and neurite growth molecules that are dysregulated in the Neurod1 deletion mutant. Taken together, we demonstrate that much of the projections of NEUROD1-deprived inner ear sensory neurons are regulated cell-autonomously.
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13
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Myosin XVI in the Nervous System. Cells 2020; 9:cells9081903. [PMID: 32824179 PMCID: PMC7464383 DOI: 10.3390/cells9081903] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2020] [Revised: 08/07/2020] [Accepted: 08/12/2020] [Indexed: 12/12/2022] Open
Abstract
The myosin family is a large inventory of actin-associated motor proteins that participate in a diverse array of cellular functions. Several myosin classes are expressed in neural cells and play important roles in neural functioning. A recently discovered member of the myosin superfamily, the vertebrate-specific myosin XVI (Myo16) class is expressed predominantly in neural tissues and appears to be involved in the development and proper functioning of the nervous system. Accordingly, the alterations of MYO16 has been linked to neurological disorders. Although the role of Myo16 as a generic actin-associated motor is still enigmatic, the N-, and C-terminal extensions that flank the motor domain seem to confer unique structural features and versatile interactions to the protein. Recent biochemical and physiological examinations portray Myo16 as a signal transduction element that integrates cell signaling pathways to actin cytoskeleton reorganization. This review discusses the current knowledge of the structure-function relation of Myo16. In light of its prevalent localization, the emphasis is laid on the neural aspects.
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14
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Chatterjee M, Schild D, Teunissen CE. Contactins in the central nervous system: role in health and disease. Neural Regen Res 2019; 14:206-216. [PMID: 30530999 PMCID: PMC6301169 DOI: 10.4103/1673-5374.244776] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 09/17/2018] [Indexed: 01/06/2023] Open
Abstract
Contactins are a group of cell adhesion molecules that are mainly expressed in the brain and play pivotal roles in the organization of axonal domains, axonal guidance, neuritogenesis, neuronal development, synapse formation and plasticity, axo-glia interactions and neural regeneration. Contactins comprise a family of six members. Their absence leads to malformed axons and impaired nerve conduction. Contactin mediated protein complex formation is critical for the organization of the axon in early central nervous system development. Mutations and differential expression of contactins have been identified in neuro-developmental or neurological disorders. Taken together, contactins are extensively studied in the context of nervous system development. This review summarizes the physiological roles of all six members of the Contactin family in neurodevelopment as well as their involvement in neurological/neurodevelopmental disorders.
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Affiliation(s)
- Madhurima Chatterjee
- Amsterdam UMC, VU University Medical Center, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Detlev Schild
- Institute of Neurophysiology and Cellular Biophysics, University of Göttingen, Göttingen, Germany
- DFG Research Center for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), University of Göttingen, Göttingen, Germany
- DFG Excellence Cluster 171, University of Göttingen, Göttingen, Germany
| | - Charlotte E. Teunissen
- Amsterdam UMC, VU University Medical Center, Department of Clinical Chemistry, Amsterdam Neuroscience, Amsterdam, The Netherlands
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15
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Gouder L, Vitrac A, Goubran-Botros H, Danckaert A, Tinevez JY, André-Leroux G, Atanasova E, Lemière N, Biton A, Leblond CS, Poulet A, Boland A, Deleuze JF, Benchoua A, Delorme R, Bourgeron T, Cloëz-Tayarani I. Altered spinogenesis in iPSC-derived cortical neurons from patients with autism carrying de novo SHANK3 mutations. Sci Rep 2019; 9:94. [PMID: 30643170 PMCID: PMC6331634 DOI: 10.1038/s41598-018-36993-x] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Accepted: 11/28/2018] [Indexed: 01/19/2023] Open
Abstract
The synaptic protein SHANK3 encodes a multidomain scaffold protein expressed at the postsynaptic density of neuronal excitatory synapses. We previously identified de novo SHANK3 mutations in patients with autism spectrum disorders (ASD) and showed that SHANK3 represents one of the major genes for ASD. Here, we analyzed the pyramidal cortical neurons derived from induced pluripotent stem cells from four patients with ASD carrying SHANK3 de novo truncating mutations. At 40-45 days after the differentiation of neural stem cells, dendritic spines from pyramidal neurons presented variable morphologies: filopodia, thin, stubby and muschroom, as measured in 3D using GFP labeling and immunofluorescence. As compared to three controls, we observed a significant decrease in SHANK3 mRNA levels (less than 50% of controls) in correlation with a significant reduction in dendritic spine densities and whole spine and spine head volumes. These results, obtained through the analysis of de novo SHANK3 mutations in the patients' genomic background, provide further support for the presence of synaptic abnormalities in a subset of patients with ASD.
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Affiliation(s)
- Laura Gouder
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France.,CNRS UMR 3571 « Genes, Synapses and Cognition », Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - Aline Vitrac
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France.,CNRS UMR 3571 « Genes, Synapses and Cognition », Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - Hany Goubran-Botros
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France.,CNRS UMR 3571 « Genes, Synapses and Cognition », Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | | | | | | | - Ekaterina Atanasova
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France.,CNRS UMR 3571 « Genes, Synapses and Cognition », Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - Nathalie Lemière
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France.,CNRS UMR 3571 « Genes, Synapses and Cognition », Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - Anne Biton
- Bioinformatics and Biostatistics Hub, C3BI, USR 3756 IP CNRS, Institut Pasteur, Paris, France
| | - Claire S Leblond
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France.,CNRS UMR 3571 « Genes, Synapses and Cognition », Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | | | - Anne Boland
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, F-91057, Evry, France
| | - Jean-François Deleuze
- Centre National de Recherche en Génomique Humaine (CNRGH), Institut de Biologie François Jacob, CEA, Université Paris-Saclay, F-91057, Evry, France
| | | | - Richard Delorme
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France.,Assistance Publique-Hôpitaux de Paris, Robert Debré Hospital, Department of Child and Adolescent Psychiatry, Paris, France
| | - Thomas Bourgeron
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France.,CNRS UMR 3571 « Genes, Synapses and Cognition », Institut Pasteur, Paris, France.,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - Isabelle Cloëz-Tayarani
- Human Genetics and Cognitive Functions, Institut Pasteur, Paris, France. .,CNRS UMR 3571 « Genes, Synapses and Cognition », Institut Pasteur, Paris, France. .,Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France.
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16
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Abstract
Synapse formation is mediated by a surprisingly large number and wide variety of genes encoding many different protein classes. One of the families increasingly implicated in synapse wiring is the immunoglobulin superfamily (IgSF). IgSF molecules are by definition any protein containing at least one Ig-like domain, making this family one of the most common protein classes encoded by the genome. Here, we review the emerging roles for IgSF molecules in synapse formation specifically in the vertebrate brain, focusing on examples from three classes of IgSF members: ( a) cell adhesion molecules, ( b) signaling molecules, and ( c) immune molecules expressed in the brain. The critical roles for IgSF members in regulating synapse formation may explain their extensive involvement in neuropsychiatric and neurodevelopmental disorders. Solving the IgSF code for synapse formation may reveal multiple new targets for rescuing IgSF-mediated deficits in synapse formation and, eventually, new treatments for psychiatric disorders caused by altered IgSF-induced synapse wiring.
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Affiliation(s)
- Scott Cameron
- Center for Neuroscience, University of California, Davis, California 95618, USA; ,
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17
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Gorlewicz A, Kaczmarek L. Pathophysiology of Trans-Synaptic Adhesion Molecules: Implications for Epilepsy. Front Cell Dev Biol 2018; 6:119. [PMID: 30298130 PMCID: PMC6160742 DOI: 10.3389/fcell.2018.00119] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 08/30/2018] [Indexed: 12/31/2022] Open
Abstract
Chemical synapses are specialized interfaces between neurons in the brain that transmit and modulate information, thereby integrating cells into multiplicity of interacting neural circuits. Cell adhesion molecules (CAMs) might form trans-synaptic complexes that are crucial for the appropriate identification of synaptic partners and further for the establishment, properties, and dynamics of synapses. When affected, trans-synaptic adhesion mechanisms play a role in synaptopathies in a variety of neuropsychiatric disorders including epilepsy. This review recapitulates current understanding of trans-synaptic interactions in pathophysiology of interneuronal connections. In particular, we discuss here the possible implications of trans-synaptic adhesion dysfunction for epilepsy.
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Affiliation(s)
- Adam Gorlewicz
- Laboratory of Neurobiology, Nencki Institute of Experimental Biology, Polish Academy of Sciences, Warsaw, Poland
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18
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Vitrac A, Cloëz-Tayarani I. Induced pluripotent stem cells as a tool to study brain circuits in autism-related disorders. Stem Cell Res Ther 2018; 9:226. [PMID: 30139379 PMCID: PMC6107940 DOI: 10.1186/s13287-018-0966-2] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
The mammalian brain is a very complex organ containing an estimated 200 billion cells in humans. Therefore, studying human brain development has become very challenging given all the data that are available from different approaches, notably genetic studies.Recent pluripotent stem cell methods have given rise to the possibility of modeling neurodevelopmental diseases associated with genetic defects. Fibroblasts from patients have been reprogrammed into pluripotent stem cells to derive appropriate neuronal lineages. They specifically include different subtypes of cortical neurons that are at the core of human-specific cognitive abilities. The use of neurons derived from induced pluripotent stem cells (iPSC) has led to deciphering convergent and pleiotropic neuronal synaptic phenotypes found in neurodevelopmental disorders such as autism spectrum disorders (ASD) and their associated syndromes. In addition to these initial studies, remarkable progress has been made in the field of stem cells, with the major objective of reproducing the in vivo maturation steps of human neurons. Recently, several studies have demonstrated the ability of human progenitors to respond to guidance cues and signals in vivo that can direct neurons to their appropriate sites of differentiation where they become fully mature neurons.We provide a brief overview on research using human iPSC in ASD and associated syndromes and on the current understanding of new theories using the re-implantation of neural precursors in mouse brain.
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Affiliation(s)
- Aline Vitrac
- Human Genetics and Cognitive Functions, Institut Pasteur, 25 rue du Docteur Roux, 75015 Paris, France
- CNRS UMR 3571, Institut Pasteur, 25 rue du Docteur Roux, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, 25 rue du Docteur Roux, Paris, France
| | - Isabelle Cloëz-Tayarani
- Human Genetics and Cognitive Functions, Institut Pasteur, 25 rue du Docteur Roux, 75015 Paris, France
- CNRS UMR 3571, Institut Pasteur, 25 rue du Docteur Roux, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, 25 rue du Docteur Roux, Paris, France
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19
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Mu D, Xu Y, Zhao T, Watanabe K, Xiao Z, Ye H. Cntn6 deficiency impairs allocentric navigation in mice. Brain Behav 2018; 8:e00969. [PMID: 30106251 PMCID: PMC5991572 DOI: 10.1002/brb3.969] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/24/2017] [Revised: 03/12/2018] [Accepted: 03/13/2018] [Indexed: 01/06/2023] Open
Abstract
INTRODUCTION CNTN6 is an immunoglobulin domain-containing cell adhesion molecule that belongs to the contactin family. It is involved in the development of the nervous system. We aim to determine the effect of Cntn6 deficiency on the allocentric navigation in mice. METHODS We recorded the travel distance and escape time of wild-type and Cntn6 mutant male and female mice in the Morris water maze task according to the protocol. RESULTS There was hardly any Cntn6 expression in the hippocampus of postnatal day 0 (P0) mice, while obvious Cntn6 expression was present in the hippocampal CA1 region of the P7 mice. During the acquisition period of Morris water maze task (Day 1 to 4), Cntn6-/- male mice failed to shorten the escape time to reach platform on the third day, while the travel distance to platform was not significantly different. There was no significant difference in both escape time and travel distance to the platform among all female subjects. In the probe trial test (Day 5), spatial memory of the female mutant mice was mildly affected, while Cntn6-/- male mice were normal. In the spatial relearning test (Day 7 to 10), Cntn6-/- male mice showed no difference in escape time to the platform compared to the wild-type male mice, while Cntn6 deficient female mice required shorter escape time to travel to the platform on day 7, day 8, and day 10. CONCLUSIONS Cntn6 is expressed in the developing hippocampus in mice. Cntn6 deficiency affects spatial learning and memory, indicating that Cntn6 plays a role in the development of hippocampus and affects allocentric navigation of the animals.
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Affiliation(s)
- Di Mu
- Department of Medical Genetics and Developmental BiologySchool of Basic Medical SciencesBeijing Institute for Brain DisordersCenter of SchizophreniaCapital Medical UniversityBeijingChina
| | - Yiliang Xu
- Department of Medical Genetics and Developmental BiologySchool of Basic Medical SciencesBeijing Institute for Brain DisordersCenter of SchizophreniaCapital Medical UniversityBeijingChina
| | - Tian Zhao
- Department of Medical Genetics and Developmental BiologySchool of Basic Medical SciencesBeijing Institute for Brain DisordersCenter of SchizophreniaCapital Medical UniversityBeijingChina
| | - Kazutada Watanabe
- Department of BioengineeringNagaoka University of TechnologyNagaokaNiigataJapan
| | - Zhi‐Cheng Xiao
- The Key Laboratory of Stem Cell and Regenerative MedicineInstitute of Molecular and Clinical MedicineKunming Medical UniversityKunmingChina
- Department of Anatomy and Developmental BiologyMonash UniversityClaytonMELAustralia
| | - Haihong Ye
- Department of Medical Genetics and Developmental BiologySchool of Basic Medical SciencesBeijing Institute for Brain DisordersCenter of SchizophreniaCapital Medical UniversityBeijingChina
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20
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Evenepoel L, van Nederveen FH, Oudijk L, Papathomas TG, Restuccia DF, Belt EJT, de Herder WW, Feelders RA, Franssen GJH, Hamoir M, Maiter D, Ghayee HK, Shay JW, Perren A, Timmers HJLM, van Eeden S, Vroonen L, Aydin S, Robledo M, Vikkula M, de Krijger RR, Dinjens WNM, Persu A, Korpershoek E. Expression of Contactin 4 Is Associated With Malignant Behavior in Pheochromocytomas and Paragangliomas. J Clin Endocrinol Metab 2018; 103:46-55. [PMID: 28938490 DOI: 10.1210/jc.2017-01314] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/08/2017] [Accepted: 08/14/2017] [Indexed: 02/06/2023]
Abstract
CONTEXT Pheochromocytomas and paragangliomas (PPGLs) are rare neuroendocrine, usually benign, tumors. Currently, the only reliable criterion of malignancy is the presence of metastases. OBJECTIVE The aim of this study was to identify genes associated with malignancy in PPGLs. DESIGN Transcriptomic profiling was performed on 40 benign and 11 malignant PPGLs. Genes showing a significantly different expression between benign and malignant PPGLs with a ratio ≥4 were confirmed and tested in an independent series by quantitative real-time polymerase chain reaction (qRT-PCR). Immunohistochemistry was performed for the validated genes on 109 benign and 32 malignant PPGLs. Functional assays were performed with hPheo1 cells. SETTING This study was conducted at the Department of Pathology of the Erasmus MC University Medical Center Rotterdam Human Molecular Genetics laboratory of the de Duve Institute, University of Louvain. PATIENTS PPGL samples from 179 patients, diagnosed between 1972 and 2015, were included. MAIN OUTCOME MEASURES Associations between gene expression and malignancy were tested using supervised clustering approaches. RESULTS Ten differentially expressed genes were selected based on messenger RNA (mRNA) expression array data. Contactin 4 (CNTN4) was overexpressed in malignant vs benign tumors [4.62-fold; false discovery rate (FDR), 0.001]. Overexpression at the mRNA level was confirmed using qRT-PCR (2.90-fold, P = 0.02; validation set: 4.26-fold, P = 0.005). Consistent findings were obtained in The Cancer Genome Atlas cohort (2.7-fold; FDR, 0.02). CNTN4 protein was more frequently expressed in malignant than in benign PPGLs by immunohistochemistry (58% vs 17%; P = 0.002). Survival after 7 days of culture under starvation conditions was significantly enhanced in hPheo1 cells transfected with CNTN4 complementary DNA. CONCLUSION CNTN4 expression is consistently associated with malignant behavior in PPGLs.
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Affiliation(s)
- Lucie Evenepoel
- Pole of Cardiovascular Research, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium
- Department of Pathology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
- Human Molecular Genetics, de Duve Institute, Université catholique de Louvain, Brussels, Belgium
| | | | - Lindsey Oudijk
- Department of Pathology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
| | - Thomas G Papathomas
- Department of Pathology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
- Department of Histopathology, King's College Hospital, London, United Kingdom
| | - David F Restuccia
- Department of Pathology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
| | - Eric J T Belt
- Department of Surgery, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
| | - Wouter W de Herder
- Internal Medicine, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
| | - Richard A Feelders
- Internal Medicine, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
| | - Gaston J H Franssen
- Department of Surgery, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
| | - Marc Hamoir
- Otolaryngology Department, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| | - Dominique Maiter
- Endocrinology Department, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| | - Hans K Ghayee
- Department of Internal Medicine, Division of Endocrinology, University of Florida, Gainesville, Florida
| | - Jerry W Shay
- Department of Cell Biology, University of Texas Southwestern Medical Center, Dallas, Texas
| | - Aurel Perren
- Clinical Pathology Division, University of Bern, Bern, Switzerland
| | - Henri J L M Timmers
- Department of Internal Medicine, Division of Endocrinology, Radboud University Medical Centre, Nijmegen, Netherlands
| | - Susanne van Eeden
- Department of Pathology, Academic Medical Center, Amsterdam, Netherlands
| | - Laurent Vroonen
- Department of Endocrinology, Centre Hospitalier Universitaire de Liège, University of Liège, Domaine Universitaire du Sart-Tilman, Liège, Belgium
| | - Selda Aydin
- Department of Pathology, Cliniques universitaires Saint Luc, Université catholique de Louvain, Brussels, Belgium
| | - Mercedes Robledo
- Hereditary Endocrine Cancer Group, Human Cancer Genetics Programme, Spanish National Cancer Research Centre, Madrid, Spain
- Centre for Biomedical Network Research on Rare Diseases, Madrid, Spain
| | - Miikka Vikkula
- Human Molecular Genetics, de Duve Institute, Université catholique de Louvain, Brussels, Belgium
| | - Ronald R de Krijger
- Department of Pathology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
- Department of Pathology, Reinier de Graaf Hospital, Delft, Netherlands
| | - Winand N M Dinjens
- Department of Pathology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
| | - Alexandre Persu
- Pole of Cardiovascular Research, Institut de Recherche Expérimentale et Clinique, Université catholique de Louvain, Brussels, Belgium
- Division of Cardiology, Cliniques Universitaires Saint-Luc, Université catholique de Louvain, Brussels, Belgium
| | - Esther Korpershoek
- Department of Pathology, Erasmus MC Cancer Institute, University Medical Center, Rotterdam, Netherlands
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Tan RPA, Leshchyns'ka I, Sytnyk V. Glycosylphosphatidylinositol-Anchored Immunoglobulin Superfamily Cell Adhesion Molecules and Their Role in Neuronal Development and Synapse Regulation. Front Mol Neurosci 2017; 10:378. [PMID: 29249937 PMCID: PMC5715320 DOI: 10.3389/fnmol.2017.00378] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Accepted: 10/30/2017] [Indexed: 01/01/2023] Open
Abstract
Immunoglobulin superfamily (IgSF) cell adhesion molecules (CAMs) are cell surface glycoproteins that not only mediate interactions between neurons but also between neurons and other cells in the nervous system. While typical IgSF CAMs are transmembrane molecules, this superfamily also includes CAMs, which do not possess transmembrane and intracellular domains and are instead attached to the plasma membrane via a glycosylphosphatidylinositol (GPI) anchor. In this review, we focus on the role GPI-anchored IgSF CAMs have as signal transducers and ligands in neurons, and discuss their functions in regulation of neuronal development, synapse formation, synaptic plasticity, learning, and behavior. We also review the links between GPI-anchored IgSF CAMs and brain disorders.
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Affiliation(s)
- Rui P A Tan
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, Australia
| | - Iryna Leshchyns'ka
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, Australia
| | - Vladimir Sytnyk
- School of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, NSW, Australia
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22
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Manduca Contactin Regulates Amyloid Precursor Protein-Dependent Neuronal Migration. J Neurosci 2017; 36:8757-75. [PMID: 27535920 DOI: 10.1523/jneurosci.0729-16.2016] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2016] [Accepted: 07/12/2016] [Indexed: 01/06/2023] Open
Abstract
UNLABELLED Amyloid precursor protein (APP) was originally identified as the source of β-amyloid peptides that accumulate in Alzheimer's disease (AD), but it also has been implicated in the control of multiple aspects of neuronal motility. APP belongs to an evolutionarily conserved family of transmembrane proteins that can interact with a variety of adapter and signaling molecules. Recently, we showed that both APP and its insect ortholog [APPL (APP-Like)] directly bind the heterotrimeric G-protein Goα, supporting the model that APP can function as an unconventional Goα-coupled receptor. We also adapted a well characterized assay of neuronal migration in the hawkmoth, Manduca sexta, to show that APPL-Goα signaling restricts ectopic growth within the developing nervous system, analogous to the role postulated for APP family proteins in controlling migration within the mammalian cortex. Using this assay, we have now identified Manduca Contactin (MsContactin) as an endogenous ligand for APPL, consistent with previous work showing that Contactins interact with APP family proteins in other systems. Using antisense-based knockdown protocols and fusion proteins targeting both proteins, we have shown that MsContactin is selectively expressed by glial cells that ensheath the migratory neurons (expressing APPL), and that MsContactin-APPL interactions normally prevent inappropriate migration and outgrowth. These results provide new evidence that Contactins can function as authentic ligands for APP family proteins that regulate APP-dependent responses in the developing nervous system. They also support the model that misregulated Contactin-APP interactions might provoke aberrant activation of Goα and its effectors, thereby contributing to the neurodegenerative sequelae that typify AD. SIGNIFICANCE STATEMENT Members of the amyloid precursor protein (APP) family participate in many aspects of neuronal development, but the ligands that normally activate APP signaling have remained controversial. This research provides new evidence that members of the Contactin family function as authentic ligands for APP and its orthologs, and that this evolutionarily conserved class of membrane-attached proteins regulates key aspects of APP-dependent migration and outgrowth in the embryonic nervous system. By defining the normal role of Contactin-APP signaling during development, these studies also provide the framework for investigating how the misregulation of Contactin-APP interactions might contribute to neuronal dysfunction in the context of both normal aging and neurodegenerative conditions, including Alzheimer's disease.
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23
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Pezzolo A, Sementa AR, Lerone M, Morini M, Ognibene M, Defferrari R, Mazzocco K, Conte M, Gigliotti AR, Garaventa A, Pistoia V, Varesio L. Constitutional 3p26.3 terminal microdeletion in an adolescent with neuroblastoma. Cancer Biol Ther 2017; 18:285-289. [PMID: 28402723 DOI: 10.1080/15384047.2017.1312231] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
Abstract
BACKGROUND Neuroblastoma (NB) is a common and often lethal cancer of early childhood that accounts for 10% of pediatric cancer mortality. Incidence peaks in infancy and then rapidly declines, with less than 5% of cases diagnosed in children and adolescents ≥ 10 y. There is increasing evidence that NB has unique biology and an chronic disease course in older children and adolescents, but ultimately dismal survival. METHODS We describe a rare constitutional 3p26.3 terminal microdeletion which occurred in an adolescent with NB, with apparently normal phenotype without neurocognitive defects. We evaluated the association of expression of genes involved in the microdeletion with NB patient outcomes using R2 platform. We screened NB patient's tumor cells for CHL1 protein expression using immunofluorescence. RESULTS Constitutional and tumor DNA were tested by array-comparative genomic hybridization and single nucleotide-polymorphism-array analyses. Peripheral blood mononuclear cells from the patient showed a 2.54 Mb sub-microscopic constitutional terminal 3p deletion that extended to band p26.3. The microdeletion 3p disrupted the CNTN4 gene and the neighboring CNTN6 and CHL1 genes were hemizygously deleted, each of these genes encode neuronal cell adhesion molecules. Low expression of CNTN6 and CNTN4 genes did not stratify NB patients, whereas low CHL1 expression characterized 417 NB patients having worse overall survival. CHL1 protein expression on tumor cells from the patient was weaker than positive control. CONCLUSION This is the first report of a constitutional 3p26.3 deletion in a NB patient. Since larger deletions of 3p, indicative of the presence of one or more tumor suppressor genes in this region, occur frequently in neuroblastoma, our results pave the way to the identification of one putative NB suppressor genes mapping in 3p26.3.
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Affiliation(s)
- Annalisa Pezzolo
- a Laboratorio di Oncologia , Istituto Giannina Gaslini , Genova , Italy
| | - Angela Rita Sementa
- b Laboratorio di Anatomia Patologica , Istituto Giannina Gaslini , Genova , Italy
| | - Margherita Lerone
- c Laboratorio di Genetica Molecolare , Istituto Giannina Gaslini , Genova , Italy
| | - Martina Morini
- d Laboratorio di Biologia Molecolare , Istituto Giannina Gaslini , Genova , Italy
| | - Marzia Ognibene
- a Laboratorio di Oncologia , Istituto Giannina Gaslini , Genova , Italy
| | - Raffaella Defferrari
- b Laboratorio di Anatomia Patologica , Istituto Giannina Gaslini , Genova , Italy
| | - Katia Mazzocco
- b Laboratorio di Anatomia Patologica , Istituto Giannina Gaslini , Genova , Italy
| | - Massimo Conte
- e Dipartimento di Emato-Oncologia , Istituto Giannina Gaslini , Genova , Italy
| | - Anna Rita Gigliotti
- e Dipartimento di Emato-Oncologia , Istituto Giannina Gaslini , Genova , Italy
| | - Alberto Garaventa
- e Dipartimento di Emato-Oncologia , Istituto Giannina Gaslini , Genova , Italy
| | - Vito Pistoia
- f Area Immunologica Ospedale Pediatrico Bambino Gesù , Roma
| | - Luigi Varesio
- d Laboratorio di Biologia Molecolare , Istituto Giannina Gaslini , Genova , Italy
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24
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Martínez-Cerdeño V. Dendrite and spine modifications in autism and related neurodevelopmental disorders in patients and animal models. Dev Neurobiol 2017; 77:393-404. [PMID: 27390186 PMCID: PMC5219951 DOI: 10.1002/dneu.22417] [Citation(s) in RCA: 148] [Impact Index Per Article: 21.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2016] [Revised: 06/29/2016] [Accepted: 07/04/2016] [Indexed: 12/12/2022]
Abstract
Dendrites and spines are the main neuronal structures receiving input from other neurons and glial cells. Dendritic and spine number, size, and morphology are some of the crucial factors determining how signals coming from individual synapses are integrated. Much remains to be understood about the characteristics of neuronal dendrites and dendritic spines in autism and related disorders. Although there have been many studies conducted using autism mouse models, few have been carried out using postmortem human tissue from patients. Available animal models of autism include those generated through genetic modifications and those non-genetic models of the disease. Here, we review how dendrite and spine morphology and number is affected in autism and related neurodevelopmental diseases, both in human, and genetic and non-genetic animal models of autism. Overall, data obtained from human and animal models point to a generalized reduction in the size and number, as well as an alteration of the morphology of dendrites; and an increase in spine densities with immature morphology, indicating a general spine immaturity state in autism. Additional human studies on dendrite and spine number and morphology in postmortem tissue are needed to understand the properties of these structures in the cerebral cortex of patients with autism. © 2016 Wiley Periodicals, Inc. Develop Neurobiol 77: 419-437, 2017.
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Affiliation(s)
- Verónica Martínez-Cerdeño
- Department of Pathology and Laboratory Medicine, UC Davis, Sacramento, California
- Institute for Pediatric Regenerative Medicine and Shriners Hospitals for Children Northern California, North California, Sacramento, California
- MIND Institute, UC Davis School of Medicine, Sacramento, California
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25
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Mercati O, Huguet G, Danckaert A, André-Leroux G, Maruani A, Bellinzoni M, Rolland T, Gouder L, Mathieu A, Buratti J, Amsellem F, Benabou M, Van-Gils J, Beggiato A, Konyukh M, Bourgeois JP, Gazzellone MJ, Yuen RKC, Walker S, Delépine M, Boland A, Régnault B, Francois M, Van Den Abbeele T, Mosca-Boidron AL, Faivre L, Shimoda Y, Watanabe K, Bonneau D, Rastam M, Leboyer M, Scherer SW, Gillberg C, Delorme R, Cloëz-Tayarani I, Bourgeron T. CNTN6 mutations are risk factors for abnormal auditory sensory perception in autism spectrum disorders. Mol Psychiatry 2017; 22:625-633. [PMID: 27166760 PMCID: PMC5378808 DOI: 10.1038/mp.2016.61] [Citation(s) in RCA: 48] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/18/2015] [Revised: 02/12/2016] [Accepted: 02/17/2016] [Indexed: 12/11/2022]
Abstract
Contactin genes CNTN5 and CNTN6 code for neuronal cell adhesion molecules that promote neurite outgrowth in sensory-motor neuronal pathways. Mutations of CNTN5 and CNTN6 have previously been reported in individuals with autism spectrum disorders (ASDs), but very little is known on their prevalence and clinical impact. In this study, we identified CNTN5 and CNTN6 deleterious variants in individuals with ASD. Among the carriers, a girl with ASD and attention-deficit/hyperactivity disorder was carrying five copies of CNTN5. For CNTN6, both deletions (6/1534 ASD vs 1/8936 controls; P=0.00006) and private coding sequence variants (18/501 ASD vs 535/33480 controls; P=0.0005) were enriched in individuals with ASD. Among the rare CNTN6 variants, two deletions were transmitted by fathers diagnosed with ASD, one stop mutation CNTN6W923X was transmitted by a mother to her two sons with ASD and one variant CNTN6P770L was found de novo in a boy with ASD. Clinical investigations of the patients carrying CNTN5 or CNTN6 variants showed that they were hypersensitive to sounds (a condition called hyperacusis) and displayed changes in wave latency within the auditory pathway. These results reinforce the hypothesis of abnormal neuronal connectivity in the pathophysiology of ASD and shed new light on the genes that increase risk for abnormal sensory perception in ASD.
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Affiliation(s)
- O Mercati
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - G Huguet
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - A Danckaert
- Imagopole, Citech, Institut Pasteur, Paris, France
| | - G André-Leroux
- Institut Pasteur, Unité de Microbiologie Structurale, Paris, France
- CNRS UMR 3528, Paris, France
- INRA, Unité MaIAGE, UR1404, Jouy-en-Josas, France
| | - A Maruani
- Assistance Publique-Hôpitaux de Paris, Child and Adolescent Psychiatry Department, Robert Debré Hospital, Paris, France
| | - M Bellinzoni
- Institut Pasteur, Unité de Microbiologie Structurale, Paris, France
- CNRS UMR 3528, Paris, France
| | - T Rolland
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - L Gouder
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - A Mathieu
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - J Buratti
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - F Amsellem
- Assistance Publique-Hôpitaux de Paris, Child and Adolescent Psychiatry Department, Robert Debré Hospital, Paris, France
| | - M Benabou
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - J Van-Gils
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - A Beggiato
- Assistance Publique-Hôpitaux de Paris, Child and Adolescent Psychiatry Department, Robert Debré Hospital, Paris, France
| | - M Konyukh
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - J-P Bourgeois
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - M J Gazzellone
- Centre for Applied Genomics, Program in Genetics and Genome Biology, Hospital for Sick Children, Toronto, ON, Canada
| | - R K C Yuen
- Centre for Applied Genomics, Program in Genetics and Genome Biology, Hospital for Sick Children, Toronto, ON, Canada
| | - S Walker
- Centre for Applied Genomics, Program in Genetics and Genome Biology, Hospital for Sick Children, Toronto, ON, Canada
| | - M Delépine
- Centre National de Génotypage, Evry, France
| | - A Boland
- Centre National de Génotypage, Evry, France
| | - B Régnault
- Eukaryote Genotyping Platform, Genopole, Institut Pasteur, Paris, France
| | - M Francois
- Assistance Publique-Hôpitaux de Paris, ENT and Head and Neck Surgery Department, Robert Debré Hospital, Paris-VII University, Paris, France
| | - T Van Den Abbeele
- Assistance Publique-Hôpitaux de Paris, ENT and Head and Neck Surgery Department, Robert Debré Hospital, Paris-VII University, Paris, France
| | - A L Mosca-Boidron
- Département de Génétique, CHU Dijon et Université de Bourgogne, Dijon, France
| | - L Faivre
- Département de Génétique, CHU Dijon et Université de Bourgogne, Dijon, France
| | - Y Shimoda
- Department of Bioengineering, Nagaoka University of Technology, Nagaoka, Japan
| | - K Watanabe
- Department of Bioengineering, Nagaoka University of Technology, Nagaoka, Japan
| | - D Bonneau
- Département de Biochimie et Génétique, Centre Hospitalier Universitaire, Angers, France
| | - M Rastam
- Department of Clinical Sciences in Lund, Lund University, Lund, Sweden
- Gillberg Neuropsychiatry Centre, University of Gothenburg, Gothenburg, Sweden
| | - M Leboyer
- INSERM U955, Psychiatrie Translationnelle, Créteil, France
- Université Paris Est, Faculté de Médecine, Créteil, France
- Assistance Publique-Hôpitaux de Paris, DHU Pe-PSY, H. Mondor Hospital, Department of Psychiatry, Créteil, France
- FondaMental Foundation, Créteil, France
| | - S W Scherer
- Centre for Applied Genomics, Program in Genetics and Genome Biology, Hospital for Sick Children, Toronto, ON, Canada
- McLaughlin Centre, Department of Molecular Genetics, University of Toronto, Toronto, ON, Canada
| | - C Gillberg
- Gillberg Neuropsychiatry Centre, University of Gothenburg, Gothenburg, Sweden
| | - R Delorme
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
- Assistance Publique-Hôpitaux de Paris, Child and Adolescent Psychiatry Department, Robert Debré Hospital, Paris, France
| | - I Cloëz-Tayarani
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
| | - T Bourgeron
- Human Genetics and Cognitive Functions Unit, Institut Pasteur, Paris, France
- CNRS UMR 3571: Genes, Synapses and Cognition, Institut Pasteur, Paris, France
- Université Paris Diderot, Sorbonne Paris Cité, Human Genetics and Cognitive Functions, Paris, France
- Gillberg Neuropsychiatry Centre, University of Gothenburg, Gothenburg, Sweden
- FondaMental Foundation, Créteil, France
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Abstract
Intragenic deletions of the contactin-associated protein-like 2 gene (CNTNAP2) have been found in patients with Gilles de la Tourette syndrome, intellectual disability (ID), obsessive compulsive disorder, cortical dysplasia-focal epilepsy syndrome, autism, schizophrenia, Pitt-Hopkins syndrome, stuttering, and attention deficit hyperactivity disorder. A variety of molecular mechanisms, such as loss of transcription factor binding sites and perturbation of penetrance and expressivity, have been proposed to account for the phenotypic variability resulting from CNTNAP2 mutations. Deletions of both CNTNAP2 alleles produced truncated proteins lacking the transmembrane or some of the extracellular domains, or no protein at all. This observation can be extended to heterozygous intragenic deletions by assuming that such deletion-containing alleles lead to expression of a Caspr2 protein lacking one or several extracellular domains. Such altered forms of Capr2 proteins will lack the ability to bridge the intercellular space between neurons by binding to partners, such as CNTN1, CNTN2, DLG1, and DLG4. This presumed effect of intragenic deletions of CNTNAP2, and possibly other genes involved in connecting neuronal cells, represents a molecular basis for the postulated neuronal hypoconnectivity in autism and probably other neurodevelopmental disorders, including epilepsy, ID, language impairments and schizophrenia. Thus, CNTNAP2 may represent a paradigmatic case of a gene functioning as a node in a genetic and cellular network governing brain development and acquisition of higher cognitive functions.
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Affiliation(s)
- Martin Poot
- Department of Human Genetics, University of Würzburg, Würzburg, Germany
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27
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A current view on contactin-4, -5, and -6: Implications in neurodevelopmental disorders. Mol Cell Neurosci 2017; 81:72-83. [PMID: 28064060 DOI: 10.1016/j.mcn.2016.12.004] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2016] [Revised: 12/23/2016] [Accepted: 12/25/2016] [Indexed: 12/30/2022] Open
Abstract
Contactins (Cntns) are a six-member subgroup of the immunoglobulin cell adhesion molecule superfamily (IgCAMs) with pronounced brain expression and function. Recent genetic studies of neuropsychiatric disorders have pinpointed contactin-4 (CNTN4), contactin-5 (CNTN5) and contactin-6 (CNTN6) as candidate genes in neurodevelopmental disorders, particularly in autism spectrum disorders (ASDs), but also in intellectual disability, schizophrenia (SCZ), attention-deficit hyperactivity disorder (ADHD), bipolar disorder (BD), alcohol use disorder (AUD) and anorexia nervosa (AN). This suggests that they have important functions during neurodevelopment. This suggestion is supported by data showing that neurite outgrowth, cell survival and neural circuit formation can be affected by disruption of these genes. Here, we review the current genetic data about their involvement in neuropsychiatric disorders and explore studies on how null mutations affect mouse behavior. Finally, we highlight to role of protein-protein interactions in the potential mechanism of action of Cntn4, -5 and -6 and emphasize that complexes with other membrane proteins may play a role in neuronal developmental functions.
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Zuko A, Oguro-Ando A, van Dijk R, Gregorio-Jordan S, van der Zwaag B, Burbach JPH. Developmental role of the cell adhesion molecule Contactin-6 in the cerebral cortex and hippocampus. Cell Adh Migr 2016; 10:378-92. [PMID: 26939565 DOI: 10.1080/19336918.2016.1155018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
The gene encoding the neural cell adhesion molecule Contactin-6 (Cntn6 a.k.a. NB-3) has been implicated as an autism risk gene, suggesting that its mutation is deleterious to brain development. Due to its GPI-anchor at Cntn6 may exert cell adhesion/receptor functions in complex with other membrane proteins, or serve as a ligand. We aimed to uncover novel phenotypes related to Cntn6 functions during development in the cerebral cortex of adult Cntn6(-/-) mice. We first determined Cntn6 protein and mRNA expression in the cortex, thalamic nuclei and the hippocampus at P14, which decreased specifically in the cortex at adult stages. Neuroanatomical analysis demonstrated a significant decrease of Cux1+ projection neurons in layers II-IV and an increase of FoxP2+ projection neurons in layer VI in the visual cortex of adult Cntn6(-/-) mice compared to wild-type controls. Furthermore, the number of parvalbumin+ (PV) interneurons was decreased in Cntn6(-/-) mice, while the amount of NPY+ interneurons remained unchanged. In the hippocampus the delineation and outgrowth of mossy fibers remained largely unchanged, except for the observation of a larger suprapyramidal bundle. The observed abnormalities in the cerebral cortex and hippocampus of Cntn6(-/-) mice suggests that Cntn6 serves developmental functions involving cell survival, migration and fasciculation. Furthermore, these data suggest that Cntn6 engages in both trans- and cis-interactions and may be involved in larger protein interaction networks.
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Affiliation(s)
- Amila Zuko
- a Brain Center Rudolf Magnus , Department of Translational Neuroscience , University Medical Center Utrecht , Utrecht , The Netherlands
| | - Asami Oguro-Ando
- a Brain Center Rudolf Magnus , Department of Translational Neuroscience , University Medical Center Utrecht , Utrecht , The Netherlands
| | - Roland van Dijk
- a Brain Center Rudolf Magnus , Department of Translational Neuroscience , University Medical Center Utrecht , Utrecht , The Netherlands
| | - Sara Gregorio-Jordan
- a Brain Center Rudolf Magnus , Department of Translational Neuroscience , University Medical Center Utrecht , Utrecht , The Netherlands
| | - Bert van der Zwaag
- b Department of Genetics , University Medical Center Utrecht , Utrecht , The Netherlands
| | - J Peter H Burbach
- a Brain Center Rudolf Magnus , Department of Translational Neuroscience , University Medical Center Utrecht , Utrecht , The Netherlands
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Bakos J, Bacova Z, Grant SG, Castejon AM, Ostatnikova D. Are Molecules Involved in Neuritogenesis and Axon Guidance Related to Autism Pathogenesis? Neuromolecular Med 2015; 17:297-304. [PMID: 25989848 DOI: 10.1007/s12017-015-8357-7] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2014] [Accepted: 05/08/2015] [Indexed: 12/27/2022]
Abstract
Autism spectrum disorder is a heterogeneous disease, and numerous alterations of gene expression come into play to attempt to explain potential molecular and pathophysiological causes. Abnormalities of brain development and connectivity associated with alterations in cytoskeletal rearrangement, neuritogenesis and elongation of axons and dendrites might represent or contribute to the structural basis of autism pathology. Slit/Robo signaling regulates cytoskeletal remodeling related to axonal and dendritic branching. Components of its signaling pathway (ABL and Cdc42) are suspected to be molecular bases of alterations of normal development. The present review describes the most important mechanisms underlying neuritogenesis, axon pathfinding and the role of GTPases in neurite outgrowth, with special emphasis on alterations associated with autism spectrum disorders. On the basis of analysis of publicly available microarray data, potential biomarkers of autism are discussed.
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Affiliation(s)
- Jan Bakos
- Institute of Experimental Endocrinology, Slovak Academy of Sciences, Vlarska 3, Bratislava, Slovakia,
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Abstract
Previous studies have shown that chronic cocaine administration induces SIRT1, a Class III histone deacetylase, in the nucleus accumbens (NAc), a key brain reward region, and that such induction influences the gene regulation and place conditioning effects of cocaine. To determine the mechanisms by which SIRT1 mediates cocaine-induced plasticity in NAc, we used chromatin immunoprecipitation followed by massively parallel sequencing (ChIP-seq), 1 d after 7 daily cocaine (20 mg/kg) or saline injections, to map SIRT1 binding genome-wide in mouse NAc. Our unbiased results revealed two modes of SIRT1 action. First, despite its induction in NAc, chronic cocaine causes depletion of SIRT1 from most affected gene promoters in concert with enrichment of H4K16ac (itself a deacetylation target of SIRT1), which is associated with increased expression of these genes. Second, we deduced the forkhead transcription factor (FOXO) family to be a downstream mechanism through which SIRT1 regulates cocaine action. We proceeded to demonstrate that SIRT1 induction causes the deacetylation and activation of FOXO3a in NAc, which leads to the induction of several known FOXO3a gene targets in other systems. Finally, we directly establish a role for FOXO3a in promoting cocaine-elicited behavioral responses by use of viral-mediated gene transfer: we show that overexpressing FOXO3a in NAc enhances cocaine place conditioning. The discovery of these two actions of SIRT1 in NAc in the context of behavioral adaptations to cocaine represents an important step forward in advancing our understanding of the molecular adaptations underlying cocaine action.
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Poot M. Connecting the CNTNAP2 Networks with Neurodevelopmental Disorders. Mol Syndromol 2015; 6:7-22. [PMID: 25852443 DOI: 10.1159/000371594] [Citation(s) in RCA: 75] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/15/2014] [Indexed: 12/23/2022] Open
Abstract
Based on genomic rearrangements and copy number variations, the contactin-associated protein-like 2 gene (CNTNAP2) has been implicated in neurodevelopmental disorders such as Gilles de la Tourette syndrome, intellectual disability, obsessive compulsive disorder, cortical dysplasia-focal epilepsy syndrome, autism, schizophrenia, Pitt-Hopkins syndrome, and attention deficit hyperactivity disorder. To explain the phenotypic pleiotropy of CNTNAP2 alterations, several hypotheses have been put forward. Those include gene disruption, loss of a gene copy by a heterozygous deletion, altered regulation of gene expression due to loss of transcription factor binding and DNA methylation sites, and mutations in the amino acid sequence of the encoded protein which may provoke altered interactions of the CNTNAP2-encoded protein, Caspr2, with other proteins. Also exome sequencing, which covers <0.2% of the CNTNAP2 genomic DNA, has revealed numerous single nucleotide variants in healthy individuals and in patients with neurodevelopmental disorders. In some of these disorders, disruption of CNTNAP2 may be interpreted as a susceptibility factor rather than a directly causative mutation. In addition to being associated with impaired development of language, CNTNAP2 may turn out to be a central node in the molecular networks controlling neurodevelopment. This review discusses the impact of CNTNAP2 mutations on its functioning at multiple levels of the combinatorial genetic networks that govern brain development. In addition, recommendations for genomic testing in the context of clinical genetic management of patients with neurodevelopmental disorders and their families are put forward.
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Affiliation(s)
- Martin Poot
- Department of Medical Genetics, University Medical Center Utrecht, Utrecht, The Netherlands
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Stoker AW. RPTPs in axons, synapses and neurology. Semin Cell Dev Biol 2014; 37:90-7. [PMID: 25234542 DOI: 10.1016/j.semcdb.2014.09.006] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2014] [Revised: 09/04/2014] [Accepted: 09/05/2014] [Indexed: 01/06/2023]
Abstract
Receptor-like protein tyrosine phosphatases represent a large protein family related to cell adhesion molecules, with diverse roles throughout neural development in vertebrates and invertebrates. This review focuses on their roles in axon growth, guidance and repair, as well as more recent findings demonstrating their key roles in pre-synaptic and post-synaptic maturation and function. These enzymes have been linked to memory and neuropsychiatric defects in loss-of-function rodent models, highlighting their potential as future drug targets.
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Affiliation(s)
- Andrew W Stoker
- Institute of Child Health, University College London, United Kingdom.
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Cervantes A, García-Delgado C, Fernández-Ramírez F, Galaz-Montoya C, Morales-Jiménez AB, Nieto-Martínez K, Gómez-Laguna L, Villa-Morales J, Quintana-Palma M, Berúmen J, Kofman S, Morán-Barroso VF. Trisomy 1q41-qter and monosomy 3p26.3-pter in a family with a translocation (1;3): further delineation of the syndromes. BMC Med Genomics 2014; 7:55. [PMID: 25223409 PMCID: PMC4170088 DOI: 10.1186/1755-8794-7-55] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2013] [Accepted: 09/10/2014] [Indexed: 11/16/2022] Open
Abstract
Background Trisomy 1q and monosomy 3p deriving from a t(1;3) is an infrequent event. The clinical characteristics of trisomy 1q41-qter have been described but there is not a delineation of the syndrome. The 3p25.3-pter monosomy syndrome (MIM 613792) characteristics include low birth weight, microcephaly, psychomotor and growth retardation and abnormal facies. Case presentation A 2 years 8 months Mexican mestizo male patient was evaluated due to a trisomy 1q and monosomy 3p derived from a familial t(1;3)(q41;q26.3). Four female carriers of the balanced translocation and one relative that may have been similarly affected as the proband were identified. The implicated chromosomal regions were defined by microarray analysis, the patient had a trisomy 1q41-qter of 30.3 Mb in extension comprising about 240 protein coding genes and a monosomy 3p26.3-pter of 1.7 Mb including only the genes CNTN6 (MIM 607220) and CHL1 (MIM 607416), which have been implicated in dendrite development. Their contribution to the phenotype, regarding the definition of trisomy 1q41-qter and monosomy 3p26.3-pter syndromes are discussed. Conclusion We propose that a trisomy 1q41-qter syndrome should be considered in particular when the following characteristics are present: postnatal growth delay, macrocephaly, wide fontanelle, triangular facies, frontal bossing, thick eye brows, down slanting palpebral fissures, hypertelorism, flat nasal bridge, hypoplasic nostrils, long filtrum, high palate, microretrognathia, ear abnormalities, neural abnormalities (in particular ventricular dilatation), psychomotor developmental delay and mental retardation. Our patient showed most of these clinical characteristics with exception of macrocephaly, possibly due to a compensatory effect by haploinsufficiency of the two genes lost from 3p. The identification of carriers has important implications for genetic counseling as the risk of a new born with either a der(3) or der(1) resulting from an adjacent-1 segregation is of 25% for each of them, as the products of adjacent-2 or 3:1 segregations are not expected to be viable.
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Affiliation(s)
| | | | | | | | | | | | | | | | | | | | | | - Verónica F Morán-Barroso
- Departamento de Genética, Hospital Infantil de México Federico Gómez, Calle Dr, Márquez 162, Col, Doctores, Del, Cuauhtémoc, 06720 México, D,F,, México.
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Yang X, Hou D, Jiang W, Zhang C. Intercellular protein-protein interactions at synapses. Protein Cell 2014; 5:420-44. [PMID: 24756565 PMCID: PMC4026422 DOI: 10.1007/s13238-014-0054-z] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2014] [Accepted: 03/23/2014] [Indexed: 12/11/2022] Open
Abstract
Chemical synapses are asymmetric intercellular junctions through which neurons send nerve impulses to communicate with other neurons or excitable cells. The appropriate formation of synapses, both spatially and temporally, is essential for brain function and depends on the intercellular protein-protein interactions of cell adhesion molecules (CAMs) at synaptic clefts. The CAM proteins link pre- and post-synaptic sites, and play essential roles in promoting synapse formation and maturation, maintaining synapse number and type, accumulating neurotransmitter receptors and ion channels, controlling neuronal differentiation, and even regulating synaptic plasticity directly. Alteration of the interactions of CAMs leads to structural and functional impairments, which results in many neurological disorders, such as autism, Alzheimer's disease and schizophrenia. Therefore, it is crucial to understand the functions of CAMs during development and in the mature neural system, as well as in the pathogenesis of some neurological disorders. Here, we review the function of the major classes of CAMs, and how dysfunction of CAMs relates to several neurological disorders.
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Affiliation(s)
- Xiaofei Yang
- Key Laboratory of Cognitive Science, Laboratory of Membrane Ion Channels and Medicine, College of Biomedical Engineering, South-Central University for Nationalities, Wuhan, 430074 China
| | - Dongmei Hou
- Key Laboratory of Cognitive Science, Laboratory of Membrane Ion Channels and Medicine, College of Biomedical Engineering, South-Central University for Nationalities, Wuhan, 430074 China
- State Key Laboratory of Biomembrane and Membrane Biotechnology, College of Life Sciences, Peking University, Beijing, 100871 China
- PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, 100871 China
| | - Wei Jiang
- Key Laboratory of Cognitive Science, Laboratory of Membrane Ion Channels and Medicine, College of Biomedical Engineering, South-Central University for Nationalities, Wuhan, 430074 China
- State Key Laboratory of Biomembrane and Membrane Biotechnology, College of Life Sciences, Peking University, Beijing, 100871 China
- PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, 100871 China
| | - Chen Zhang
- State Key Laboratory of Biomembrane and Membrane Biotechnology, College of Life Sciences, Peking University, Beijing, 100871 China
- PKU-IDG/McGovern Institute for Brain Research, Peking University, Beijing, 100871 China
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Zuko A, Kleijer KTE, Oguro-Ando A, Kas MJH, van Daalen E, van der Zwaag B, Burbach JPH. Contactins in the neurobiology of autism. Eur J Pharmacol 2013; 719:63-74. [PMID: 23872404 DOI: 10.1016/j.ejphar.2013.07.016] [Citation(s) in RCA: 75] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2013] [Revised: 06/18/2013] [Accepted: 07/01/2013] [Indexed: 12/21/2022]
Abstract
Autism is a disease of brain plasticity. Inspiring work of Willem Hendrik Gispen on neuronal plasticity has stimulated us to investigate gene defects in autism and the consequences for brain development. The central process in the pathogenesis of autism is local dendritic mRNA translation which is dependent on axodendritic communication. Hence, most autism-related gene products (i) are part of the protein synthesis machinery itself, (ii) are components of the mTOR signal transduction pathway, or (iii) shape synaptic activity and plasticity. Accordingly, prototype drugs have been recognized that interfere with these pathways. The contactin (CNTN) family of Ig cell adhesion molecules (IgCAMs) harbours at least three members that have genetically been implicated in autism: CNTN4, CNTN5, and CNTN6. In this chapter we review the genetic and neurobiological data underpinning their role in normal and abnormal development of brain systems, and the consequences for behavior. Although data on each of these CNTNs are far from complete, we tentatively conclude that these three contactins play roles in brain development in a critical phase of establishing brain systems and their plasticity. They modulate neuronal activities, such as neurite outgrowth, synaptogenesis, survival, guidance of projections and terminal branching of axons in forming neural circuits. Current research on these CNTNs concentrate on the neurobiological mechanism of their developmental functions. A future task will be to establish if proposed pharmacological strategies to counteract ASD-related symptomes can also be applied to reversal of phenotypes caused by genetic defects in these CNTN genes.
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Affiliation(s)
- Amila Zuko
- Department of Neuroscience and Pharmacology, Brain Center Rudolf Magnus, UMC Medical Center Utrecht, 3584 CG Utrecht, The Netherlands
| | - Kristel T E Kleijer
- Department of Neuroscience and Pharmacology, Brain Center Rudolf Magnus, UMC Medical Center Utrecht, 3584 CG Utrecht, The Netherlands
| | - Asami Oguro-Ando
- Department of Neuroscience and Pharmacology, Brain Center Rudolf Magnus, UMC Medical Center Utrecht, 3584 CG Utrecht, The Netherlands
| | - Martien J H Kas
- Department of Neuroscience and Pharmacology, Brain Center Rudolf Magnus, UMC Medical Center Utrecht, 3584 CG Utrecht, The Netherlands
| | - Emma van Daalen
- Department of Psychiatry, Brain Center Rudolf Magnus, UMC Medical Center Utrecht, 3584 CG Utrecht, The Netherlands
| | - Bert van der Zwaag
- Department of Medical Genetics, University Medical Center Utrecht, 3584 CG Utrecht, The Netherlands
| | - J Peter H Burbach
- Department of Neuroscience and Pharmacology, Brain Center Rudolf Magnus, UMC Medical Center Utrecht, 3584 CG Utrecht, The Netherlands.
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