1
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Sit TPH, Feord RC, Dunn AWE, Chabros J, Oluigbo D, Smith HH, Burn L, Chang E, Boschi A, Yuan Y, Gibbons GM, Khayat-Khoei M, De Angelis F, Hemberg E, Hemberg M, Lancaster MA, Lakatos A, Eglen SJ, Paulsen O, Mierau SB. MEA-NAP compares microscale functional connectivity, topology, and network dynamics in organoid or monolayer neuronal cultures. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.02.05.578738. [PMID: 38370637 PMCID: PMC10871179 DOI: 10.1101/2024.02.05.578738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/20/2024]
Abstract
Microelectrode array (MEA) recordings are commonly used to compare firing and burst rates in neuronal cultures. MEA recordings can also reveal microscale functional connectivity, topology, and network dynamics-patterns seen in brain networks across spatial scales. Network topology is frequently characterized in neuroimaging with graph theoretical metrics. However, few computational tools exist for analyzing microscale functional brain networks from MEA recordings. Here, we present a MATLAB MEA network analysis pipeline (MEA-NAP) for raw voltage time-series acquired from single- or multi-well MEAs. Applications to 3D human cerebral organoids or 2D human-derived or murine cultures reveal differences in network development, including topology, node cartography, and dimensionality. MEA-NAP incorporates multi-unit template-based spike detection, probabilistic thresholding for determining significant functional connections, and normalization techniques for comparing networks. MEA-NAP can identify network-level effects of pharmacologic perturbation and/or disease-causing mutations and, thus, can provide a translational platform for revealing mechanistic insights and screening new therapeutic approaches.
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Affiliation(s)
- Timothy PH Sit
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
- Sainsbury Wellcome Centre, University College London, London, UK
| | - Rachael C Feord
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - Alexander WE Dunn
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - Jeremi Chabros
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - David Oluigbo
- Department of Neurology, Brigham & Women’s Hospital, Boston, MA, USA
- Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Hugo H Smith
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - Lance Burn
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - Elise Chang
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - Alessio Boschi
- Department of Neurology, Brigham & Women’s Hospital, Boston, MA, USA
- Istituto Italiano di Tecnologia, Genoa, Italy
| | - Yin Yuan
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - George M Gibbons
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
| | | | | | - Erik Hemberg
- Computer Science and Artificial Intelligence Laboratory, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Martin Hemberg
- Gene Lay Institute for Immunology and Inflammation, Brigham and Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
| | | | - Andras Lakatos
- John van Geest Centre for Brain Repair, Department of Clinical Neurosciences, University of Cambridge, Cambridge, UK
- Cambridge University Hospitals, Cambridge Biomedical Campus, Cambridge, UK
| | - Stephen J Eglen
- Applied Mathematics and Theoretical Physics, University of Cambridge, Cambridge, UK
| | - Ole Paulsen
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
| | - Susanna B Mierau
- Physiology, Development & Neuroscience, University of Cambridge, Cambridge, UK
- Department of Neurology, Brigham & Women’s Hospital, Boston, MA, USA
- Harvard Medical School, Boston, MA, USA
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2
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Jaylet T, Coustillet T, Smith NM, Viviani B, Lindeman B, Vergauwen L, Myhre O, Yarar N, Gostner JM, Monfort-Lanzas P, Jornod F, Holbech H, Coumoul X, Sarigiannis DA, Antczak P, Bal-Price A, Fritsche E, Kuchovska E, Stratidakis AK, Barouki R, Kim MJ, Taboureau O, Wojewodzic MW, Knapen D, Audouze K. Comprehensive mapping of the AOP-Wiki database: identifying biological and disease gaps. FRONTIERS IN TOXICOLOGY 2024; 6:1285768. [PMID: 38523647 PMCID: PMC10958381 DOI: 10.3389/ftox.2024.1285768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2023] [Accepted: 02/15/2024] [Indexed: 03/26/2024] Open
Abstract
Introduction: The Adverse Outcome Pathway (AOP) concept facilitates rapid hazard assessment for human health risks. AOPs are constantly evolving, their number is growing, and they are referenced in the AOP-Wiki database, which is supported by the OECD. Here, we present a study that aims at identifying well-defined biological areas, as well as gaps within the AOP-Wiki for future research needs. It does not intend to provide a systematic and comprehensive summary of the available literature on AOPs but summarizes and maps biological knowledge and diseases represented by the already developed AOPs (with OECD endorsed status or under validation). Methods: Knowledge from the AOP-Wiki database were extracted and prepared for analysis using a multi-step procedure. An automatic mapping of the existing information on AOPs (i.e., genes/proteins and diseases) was performed using bioinformatics tools (i.e., overrepresentation analysis using Gene Ontology and DisGeNET), allowing both the classification of AOPs and the development of AOP networks (AOPN). Results: AOPs related to diseases of the genitourinary system, neoplasms and developmental anomalies are the most frequently investigated on the AOP-Wiki. An evaluation of the three priority cases (i.e., immunotoxicity and non-genotoxic carcinogenesis, endocrine and metabolic disruption, and developmental and adult neurotoxicity) of the EU-funded PARC project (Partnership for the Risk Assessment of Chemicals) are presented. These were used to highlight under- and over-represented adverse outcomes and to identify and prioritize gaps for further research. Discussion: These results contribute to a more comprehensive understanding of the adverse effects associated with the molecular events in AOPs, and aid in refining risk assessment for stressors and mitigation strategies. Moreover, the FAIRness (i.e., data which meets principles of findability, accessibility, interoperability, and reusability (FAIR)) of the AOPs appears to be an important consideration for further development.
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Affiliation(s)
- Thomas Jaylet
- Université Paris Cité, Inserm UMR-S 1124 T3S, Paris, France
| | | | - Nicola M. Smith
- Norwegian Institute of Public Health, Division of Climate and Environment, Oslo, Norway
| | - Barbara Viviani
- Department of Pharmacological and Biomolecular Sciences, Università degli Studi di Milano, Milan, Italy
| | - Birgitte Lindeman
- Norwegian Institute of Public Health, Division of Climate and Environment, Oslo, Norway
| | - Lucia Vergauwen
- Zebrafishlab, Department of Veterinary Sciences, Veterinary Physiology and Biochemistry, University of Antwerp, Wilrijk, Belgium
| | - Oddvar Myhre
- Norwegian Institute of Public Health, Division of Climate and Environment, Oslo, Norway
| | - Nurettin Yarar
- Norwegian Institute of Public Health, Division of Climate and Environment, Oslo, Norway
| | - Johanna M. Gostner
- Institute of Medical Biochemistry, Medical University of Innsbruck, Innsbruck, Austria
| | - Pablo Monfort-Lanzas
- Institute of Medical Biochemistry, Medical University of Innsbruck, Innsbruck, Austria
- Institute of Bioinformatics, Biocenter, Medical University of Innsbruck, Innsbruck, Austria
| | | | - Henrik Holbech
- Department of Biology, University of Southern Denmark, Odense, Denmark
| | - Xavier Coumoul
- Université Paris Cité, Inserm UMR-S 1124 T3S, Paris, France
| | - Dimosthenis A. Sarigiannis
- Environmental Engineering Laboratory, Department of Chemical Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece
- National Hellenic Research Foundation, Athens, Greece
- Science, Technology and Society Department, Environmental Health Engineering, University School for Advanced Studies (IUSS), Pavia, Italy
| | - Philipp Antczak
- Department II of Internal Medicine, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Center for Molecular Medicine Cologne, Faculty of Medicine and University Hospital Cologne, University of Cologne, Cologne, Germany
- Cologne Excellence Cluster on Cellular Stress Responses in Aging-Associated Diseases (CECAD), Cologne, Germany
| | - Anna Bal-Price
- European Commission, Joint Research Centre (JRC), Ispra, Italy
| | - Ellen Fritsche
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
- Heinrich-Heine-University, Düsseldorf, Germany
- Swiss Centre for Applied Human Toxicology, Basel, Switzerland
- DNTOX GmbH, Düsseldorf, Germany
| | - Eliska Kuchovska
- IUF-Leibniz Research Institute for Environmental Medicine, Duesseldorf, Germany
| | - Antonios K. Stratidakis
- Science, Technology and Society Department, Environmental Health Engineering, University School for Advanced Studies (IUSS), Pavia, Italy
| | - Robert Barouki
- Université Paris Cité, Inserm UMR-S 1124 T3S, Paris, France
| | - Min Ji Kim
- Inserm UMR-S 1124, Université Sorbonne Paris Nord, Bobigny, Paris, France
| | - Olivier Taboureau
- Université Paris Cité, BFA, Team CMPLI, Inserm U1133, CNRS UMR 8251, Paris, France
| | - Marcin W. Wojewodzic
- Norwegian Institute of Public Health, Division of Climate and Environment, Oslo, Norway
- Cancer Registry of Norway, NIPH, Oslo, Norway
| | - Dries Knapen
- Zebrafishlab, Department of Veterinary Sciences, Veterinary Physiology and Biochemistry, University of Antwerp, Wilrijk, Belgium
| | - Karine Audouze
- Université Paris Cité, Inserm UMR-S 1124 T3S, Paris, France
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3
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Kawatani K, Holm ML, Starling SC, Martens YA, Zhao J, Lu W, Ren Y, Li Z, Jiang P, Jiang Y, Baker SK, Wang N, Roy B, Parsons TM, Perkerson RB, Bao H, Han X, Bu G, Kanekiyo T. ABCA7 deficiency causes neuronal dysregulation by altering mitochondrial lipid metabolism. Mol Psychiatry 2024; 29:809-819. [PMID: 38135757 PMCID: PMC11153016 DOI: 10.1038/s41380-023-02372-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 12/05/2023] [Accepted: 12/07/2023] [Indexed: 12/24/2023]
Abstract
ABCA7 loss-of-function variants are associated with increased risk of Alzheimer's disease (AD). Using ABCA7 knockout human iPSC models generated with CRISPR/Cas9, we investigated the impacts of ABCA7 deficiency on neuronal metabolism and function. Lipidomics revealed that mitochondria-related phospholipids, such as phosphatidylglycerol and cardiolipin were reduced in the ABCA7-deficient iPSC-derived cortical organoids. Consistently, ABCA7 deficiency-induced alterations of mitochondrial morphology accompanied by reduced ATP synthase activity and exacerbated oxidative damage in the organoids. Furthermore, ABCA7-deficient iPSC-derived neurons showed compromised mitochondrial respiration and excess ROS generation, as well as enlarged mitochondrial morphology compared to the isogenic controls. ABCA7 deficiency also decreased spontaneous synaptic firing and network formation in iPSC-derived neurons, in which the effects were rescued by supplementation with phosphatidylglycerol or NAD+ precursor, nicotinamide mononucleotide. Importantly, effects of ABCA7 deficiency on mitochondria morphology and synapses were recapitulated in synaptosomes isolated from the brain of neuron-specific Abca7 knockout mice. Together, our results provide evidence that ABCA7 loss-of-function contributes to AD risk by modulating mitochondria lipid metabolism.
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Affiliation(s)
- Keiji Kawatani
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Marie-Louise Holm
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Skylar C Starling
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Yuka A Martens
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- SciNeuro Pharmaceuticals, Rockville, MD, 20850, USA
| | - Jing Zhao
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- Center for Regenerative Biotherapeutics, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Wenyan Lu
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- Center for Regenerative Biotherapeutics, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Yingxue Ren
- Quantitative Health Sciences, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Zonghua Li
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Peizhou Jiang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Yangying Jiang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Samantha K Baker
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Ni Wang
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Bhaskar Roy
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Tammee M Parsons
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- Center for Regenerative Biotherapeutics, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Ralph B Perkerson
- Center for Regenerative Biotherapeutics, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Hanmei Bao
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Xianlin Han
- Barshop Institute for Longevity and Aging Studies, University of Texas Health Science Center at San Antonio, San Antonio, TX, 78229, USA
| | - Guojun Bu
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA
- Division of Life Science, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Takahisa Kanekiyo
- Department of Neuroscience, Mayo Clinic, Jacksonville, FL, 32224, USA.
- Center for Regenerative Biotherapeutics, Mayo Clinic, Jacksonville, FL, 32224, USA.
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4
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Pradeepan KS, McCready FP, Wei W, Khaki M, Zhang W, Salter MW, Ellis J, Martinez-Trujillo J. Calcium-Dependent Hyperexcitability in Human Stem Cell-Derived Rett Syndrome Neuronal Networks. BIOLOGICAL PSYCHIATRY GLOBAL OPEN SCIENCE 2024; 4:100290. [PMID: 38420187 PMCID: PMC10899066 DOI: 10.1016/j.bpsgos.2024.100290] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Revised: 12/20/2023] [Accepted: 01/14/2024] [Indexed: 03/02/2024] Open
Abstract
Background Mutations in MECP2 predominantly cause Rett syndrome and can be modeled in vitro using human stem cell-derived neurons. Patients with Rett syndrome have signs of cortical hyperexcitability, such as seizures. Human stem cell-derived MECP2 null excitatory neurons have smaller soma size and reduced synaptic connectivity but are also hyperexcitable due to higher input resistance. Paradoxically, networks of MECP2 null neurons show a decrease in the frequency of network bursts consistent with a hypoconnectivity phenotype. Here, we examine this issue. Methods We reanalyzed multielectrode array data from 3 isogenic MECP2 cell line pairs recorded over 6 weeks (n = 144). We used a custom burst detection algorithm to analyze network events and isolated a phenomenon that we termed reverberating super bursts (RSBs). To probe potential mechanisms of RSBs, we conducted pharmacological manipulations using bicuculline, EGTA-AM, and DMSO on 1 cell line (n = 34). Results RSBs, often misidentified as single long-duration bursts, consisted of a large-amplitude initial burst followed by several high-frequency, low-amplitude minibursts. Our analysis revealed that MECP2 null networks exhibited increased frequency of RSBs, which produced increased bursts compared with isogenic controls. Bicuculline or DMSO treatment did not affect RSBs. EGTA-AM selectively eliminated RSBs and rescued network burst dynamics. Conclusions During early development, MECP2 null neurons are hyperexcitable and produce hyperexcitable networks. This may predispose them to the emergence of hypersynchronic states that potentially translate into seizures. Network hyperexcitability depends on asynchronous neurotransmitter release that is likely driven by presynaptic Ca2+ and can be rescued by EGTA-AM to restore typical network dynamics.
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Affiliation(s)
- Kartik S. Pradeepan
- Graduate Program in Neuroscience, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
- Robarts Research Institute, Western University, London, Ontario, Canada
| | - Fraser P. McCready
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
- Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Wei Wei
- Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Milad Khaki
- Robarts Research Institute, Western University, London, Ontario, Canada
| | - Wenbo Zhang
- Neuroscience & Mental Health, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Michael W. Salter
- Neuroscience & Mental Health, The Hospital for Sick Children, Toronto, Ontario, Canada
- Department of Physiology, University of Toronto, Toronto, Ontario, Canada
| | - James Ellis
- Department of Molecular Genetics, University of Toronto, Toronto, Ontario, Canada
- Developmental & Stem Cell Biology, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Julio Martinez-Trujillo
- Graduate Program in Neuroscience, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
- Robarts Research Institute, Western University, London, Ontario, Canada
- Western Institute for Neuroscience, Western University, London, Ontario, Canada
- Department of Physiology and Pharmacology, and Psychiatry, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
- Department of Psychiatry, Schulich School of Medicine & Dentistry, Western University, London, Ontario, Canada
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5
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Yuan X, Puvogel S, van Rhijn JR, Ciptasari U, Esteve-Codina A, Meijer M, Rouschop S, van Hugte EJH, Oudakker A, Schoenmaker C, Frega M, Schubert D, Franke B, Nadif Kasri N. A human in vitro neuronal model for studying homeostatic plasticity at the network level. Stem Cell Reports 2023; 18:2222-2239. [PMID: 37863044 PMCID: PMC10679660 DOI: 10.1016/j.stemcr.2023.09.011] [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: 04/19/2023] [Revised: 09/18/2023] [Accepted: 09/19/2023] [Indexed: 10/22/2023] Open
Abstract
Mechanisms that underlie homeostatic plasticity have been extensively investigated at single-cell levels in animal models, but are less well understood at the network level. Here, we used microelectrode arrays to characterize neuronal networks following induction of homeostatic plasticity in human induced pluripotent stem cell (hiPSC)-derived glutamatergic neurons co-cultured with rat astrocytes. Chronic suppression of neuronal activity through tetrodotoxin (TTX) elicited a time-dependent network re-arrangement. Increased expression of AMPA receptors and the elongation of axon initial segments were associated with increased network excitability following TTX treatment. Transcriptomic profiling of TTX-treated neurons revealed up-regulated genes related to extracellular matrix organization, while down-regulated genes related to cell communication; also astrocytic gene expression was found altered. Overall, our study shows that hiPSC-derived neuronal networks provide a reliable in vitro platform to measure and characterize homeostatic plasticity at network and single-cell levels; this platform can be extended to investigate altered homeostatic plasticity in brain disorders.
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Affiliation(s)
- Xiuming Yuan
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Sofía Puvogel
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Jon-Ruben van Rhijn
- Department of Cognitive Neuroscience, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Ummi Ciptasari
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Anna Esteve-Codina
- CNAG-CRG, Centre for Genomic Regulation, Barcelona Institute of Science and Technology, 08028 Barcelona, Spain; Universitat Pompeu Fabra (UPF), 08002 Barcelona, Spain
| | - Mandy Meijer
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Simon Rouschop
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Eline J H van Hugte
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Astrid Oudakker
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Chantal Schoenmaker
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Monica Frega
- Department of Clinical Neurophysiology, University of Twente, 7522 NB Enschede, the Netherlands
| | - Dirk Schubert
- Department of Cognitive Neuroscience, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Barbara Franke
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands; Department of Cognitive Neuroscience, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands
| | - Nael Nadif Kasri
- Department of Human Genetics, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands; Department of Cognitive Neuroscience, Radboud University Medical Center, Donders Institute for Brain, Cognition and Behaviour, 6500 HB Nijmegen, the Netherlands.
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Uzun YS, Santos R, Marchetto MC, Padmanabhan K. Network size affects the complexity of activity in human iPSC-derived neuronal populations. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.10.31.564939. [PMID: 37961249 PMCID: PMC10635014 DOI: 10.1101/2023.10.31.564939] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/15/2023]
Abstract
Multi-electrode recording of neural activity in cultures offer opportunities for understanding how the structure of a network gives rise to function. Although it is hypothesized that network size is critical for determining the dynamics of activity, this relationship in human neural cultures remains largely unexplored. By applying new methods for analyzing neural activity to human iPSC derived cultures at either low-densities or high-densities, we uncovered the significant impacts that neuron number has on the individual neurophysiological properties of cells (such as firing rates), the collective behavior of the networks these cultures formed (as measured by entropy), and the relationship between the two. As a result, simply changing the densities of neurons generated dynamics and network behavior that differed not just in degree, but in kind. Beyond revealing the relationship between network structure and function, our findings provide a novel analytical framework to study diseases where network level activity is affected.
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Affiliation(s)
- Yavuz Selim Uzun
- Department of Physics and Astronomy, University of Rochester
- Del Monte Institute for Neuroscience, University of Rochester School of Medicine
| | - Renata Santos
- Université Paris Cité, Institute of Psychiatry and Neuroscience of Paris (IPNP), INSERM U1266, Signaling mechanisms in neurological disorders, 102 rue de la Santé, 75014 Paris, France
- Institut Imagine, INSERM U1163, Mechanisms and therapy of genetic brain diseases, Université Paris Cité, 24 Boulevard du Montparnasse, 75015 Paris, France
- Institut des Sciences Biologiques, CNRS, 16 rue Pierre et Marie Curie, 75005 Paris, France
| | | | - Krishnan Padmanabhan
- Del Monte Institute for Neuroscience, University of Rochester School of Medicine
- Department of Neuroscience, University of Rochester School of Medicine and Dentistry
- Center for Visual Science, University of Rochester School of Medicine and Dentistry
- Intellectual Development and Disability Research Center, University of Rochester School of Medicine and Dentistry
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7
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Parodi G, Brofiga M, Pastore VP, Chiappalone M, Martinoia S. Deepening the role of excitation/inhibition balance in human iPSCs-derived neuronal networks coupled to MEAs during long-term development. J Neural Eng 2023; 20:056011. [PMID: 37678214 DOI: 10.1088/1741-2552/acf78b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2023] [Accepted: 09/07/2023] [Indexed: 09/09/2023]
Abstract
Objective.The purpose of this study is to investigate whether and how the balance between excitation and inhibition ('E/I balance') influences the spontaneous development of human-derived neuronal networksin vitro. To achieve that goal, we performed a long-term (98 d) characterization of both homogeneous (only excitatory or inhibitory neurons) and heterogeneous (mixed neuronal types) cultures with controlled E/I ratios (i.e. E:I 0:100, 25:75, 50:50, 75:25, 100:0) by recording their electrophysiological activity using micro-electrode arrays.Approach.Excitatory and inhibitory neurons were derived from human induced pluripotent stem cells (hiPSCs). We realized five different configurations by systematically varying the glutamatergic and GABAergic percentages.Main results.We successfully built both homogeneous and heterogeneous neuronal cultures from hiPSCs finely controlling the E/I ratios; we were able to maintain them for up to 3 months. Homogeneity differentially impacted purely inhibitory (no bursts) and purely excitatory (few bursts) networks, deviating from the typical traits of heterogeneous cultures (burst dominated). Increased inhibition in heterogeneous cultures strongly affected the duration and organization of bursting and network bursting activity. Spike-based functional connectivity and image-based deep learning analysis further confirmed all the above.Significance.Healthy neuronal activity is controlled by a well-defined E/I balance whose alteration could lead to the onset of neurodevelopmental disorders like schizophrenia or epilepsy. Most of the commonly usedin vitromodels are animal-derived or too simplified and thus far from thein vivohuman condition. In this work, by performing a long-term study of hiPSCs-derived neuronal networks obtained from healthy human subjects, we demonstrated the feasibility of a robustin vitromodel which can be further exploited for investigating pathological conditions where the E/I balance is impaired.
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Affiliation(s)
- Giulia Parodi
- Department of Informatics, Bioengineering, Robotics, and Systems Engineering (DIBRIS), University of Genova, Genova, Italy
| | - Martina Brofiga
- Department of Informatics, Bioengineering, Robotics, and Systems Engineering (DIBRIS), University of Genova, Genova, Italy
- ScreenNeuroPharm s.r.l, Sanremo, Italy
- Neurofacility, Istituto Italiano di Tecnologia, Genova, Italy
| | - Vito Paolo Pastore
- Department of Informatics, Bioengineering, Robotics, and Systems Engineering (DIBRIS), University of Genova, Genova, Italy
- Machine Learning Genoa Center (MaLGa), Department of Informatics, Bioengineering, Robotics, and Systems Engineering, University of Genova, Genova, Italy
| | - Michela Chiappalone
- Department of Informatics, Bioengineering, Robotics, and Systems Engineering (DIBRIS), University of Genova, Genova, Italy
| | - Sergio Martinoia
- Department of Informatics, Bioengineering, Robotics, and Systems Engineering (DIBRIS), University of Genova, Genova, Italy
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8
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Guo Y, Shen M, Dong Q, Méndez-Albelo NM, Huang SX, Sirois CL, Le J, Li M, Jarzembowski ED, Schoeller KA, Stockton ME, Horner VL, Sousa AMM, Gao Y, Levine JE, Wang D, Chang Q, Zhao X. Elevated levels of FMRP-target MAP1B impair human and mouse neuronal development and mouse social behaviors via autophagy pathway. Nat Commun 2023; 14:3801. [PMID: 37365192 PMCID: PMC10293283 DOI: 10.1038/s41467-023-39337-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 06/05/2023] [Indexed: 06/28/2023] Open
Abstract
Fragile X messenger ribonucleoprotein 1 protein (FMRP) binds many mRNA targets in the brain. The contribution of these targets to fragile X syndrome (FXS) and related autism spectrum disorder (ASD) remains unclear. Here, we show that FMRP deficiency leads to elevated microtubule-associated protein 1B (MAP1B) in developing human and non-human primate cortical neurons. Targeted MAP1B gene activation in healthy human neurons or MAP1B gene triplication in ASD patient-derived neurons inhibit morphological and physiological maturation. Activation of Map1b in adult male mouse prefrontal cortex excitatory neurons impairs social behaviors. We show that elevated MAP1B sequesters components of autophagy and reduces autophagosome formation. Both MAP1B knockdown and autophagy activation rescue deficits of both ASD and FXS patients' neurons and FMRP-deficient neurons in ex vivo human brain tissue. Our study demonstrates conserved FMRP regulation of MAP1B in primate neurons and establishes a causal link between MAP1B elevation and deficits of FXS and ASD.
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Affiliation(s)
- Yu Guo
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Minjie Shen
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Qiping Dong
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Natasha M Méndez-Albelo
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Sabrina X Huang
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Carissa L Sirois
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Jonathan Le
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Meng Li
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Ezra D Jarzembowski
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Keegan A Schoeller
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Michael E Stockton
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Vanessa L Horner
- Department of Pathology and Laboratory Medicine, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Wisconsin State Laboratory of Hygiene, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - André M M Sousa
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Yu Gao
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Jon E Levine
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Wisconsin National Primate Research Center, University of Wisconsin-Madison, Madison, WI, 53715, USA
| | - Daifeng Wang
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Departments of Biostatistics and Medical Informatics, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Qiang Chang
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Medical Genetics, University of Wisconsin-Madison, Madison, WI, 53705, USA
- Department of Neurology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA
| | - Xinyu Zhao
- Waisman Center, University of Wisconsin-Madison, Madison, WI, 53705, USA.
- Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI, 53705, USA.
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9
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Hartmann J, Henschel N, Bartmann K, Dönmez A, Brockerhoff G, Koch K, Fritsche E. Molecular and Functional Characterization of Different BrainSphere Models for Use in Neurotoxicity Testing on Microelectrode Arrays. Cells 2023; 12:cells12091270. [PMID: 37174670 PMCID: PMC10177384 DOI: 10.3390/cells12091270] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2023] [Revised: 04/14/2023] [Accepted: 04/25/2023] [Indexed: 05/15/2023] Open
Abstract
The currently accepted methods for neurotoxicity (NT) testing rely on animal studies. However, high costs and low testing throughput hinder their application for large numbers of chemicals. To overcome these limitations, in vitro methods are currently being developed based on human-induced pluripotent stem cells (hiPSC) that allow higher testing throughput at lower costs. We applied six different protocols to generate 3D BrainSphere models for acute NT evaluation. These include three different media for 2D neural induction and two media for subsequent 3D differentiation resulting in self-organized, organotypic neuron/astrocyte microtissues. All induction protocols yielded nearly 100% NESTIN-positive hiPSC-derived neural progenitor cells (hiNPCs), though with different gene expression profiles concerning regional patterning. Moreover, gene expression and immunocytochemistry analyses revealed that the choice of media determines neural differentiation patterns. On the functional level, BrainSpheres exhibited different levels of electrical activity on microelectrode arrays (MEA). Spike sorting allowed BrainSphere functional characterization with the mixed cultures consisting of GABAergic, glutamatergic, dopaminergic, serotonergic, and cholinergic neurons. A test method for acute NT testing, the human multi-neurotransmitter receptor (hMNR) assay, was proposed to apply such MEA-based spike sorting. These models are promising tools not only in toxicology but also for drug development and disease modeling.
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Affiliation(s)
- Julia Hartmann
- IUF-Leibniz-Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225 Duesseldorf, Germany
| | - Noah Henschel
- IUF-Leibniz-Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225 Duesseldorf, Germany
| | - Kristina Bartmann
- IUF-Leibniz-Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225 Duesseldorf, Germany
- DNTOX GmbH, Gurlittstraße 53, 40223 Düsseldorf, Germany
| | - Arif Dönmez
- IUF-Leibniz-Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225 Duesseldorf, Germany
- DNTOX GmbH, Gurlittstraße 53, 40223 Düsseldorf, Germany
| | - Gabriele Brockerhoff
- IUF-Leibniz-Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225 Duesseldorf, Germany
| | - Katharina Koch
- IUF-Leibniz-Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225 Duesseldorf, Germany
- DNTOX GmbH, Gurlittstraße 53, 40223 Düsseldorf, Germany
| | - Ellen Fritsche
- IUF-Leibniz-Research Institute for Environmental Medicine, Auf'm Hennekamp 50, 40225 Duesseldorf, Germany
- DNTOX GmbH, Gurlittstraße 53, 40223 Düsseldorf, Germany
- Medical Faculty, Heinrich-Heine-University, Universitätsstraße 1, 40225 Düsseldorf, Germany
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10
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Suzuki I, Matsuda N, Han X, Noji S, Shibata M, Nagafuku N, Ishibashi Y. Large-Area Field Potential Imaging Having Single Neuron Resolution Using 236 880 Electrodes CMOS-MEA Technology. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2023:e2207732. [PMID: 37088859 PMCID: PMC10369302 DOI: 10.1002/advs.202207732] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 03/21/2023] [Indexed: 05/03/2023]
Abstract
The electrophysiological technology having a high spatiotemporal resolution at the single-cell level and noninvasive measurements of large areas provide insights on underlying neuronal function. Here, a complementary metal-oxide semiconductor (CMOS)-microelectrode array (MEA) is used that uses 236 880 electrodes each with an electrode size of 11.22 × 11.22 µm and 236 880 covering a wide area of 5.5 × 5.9 mm in presenting a detailed and single-cell-level neural activity analysis platform for brain slices, human iPS cell-derived cortical networks, peripheral neurons, and human brain organoids. Propagation pattern characteristics between brain regions changes the synaptic propagation into compounds based on single-cell time-series patterns, classification based on single DRG neuron firing patterns and compound responses, axonal conduction characteristics and changes to anticancer drugs, and network activities and transition to compounds in brain organoids are extracted. This detailed analysis of neural activity at the single-cell level using the CMOS-MEA provides a new understanding of the basic mechanisms of brain circuits in vitro and ex vivo, on human neurological diseases for drug discovery, and compound toxicity assessment.
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Affiliation(s)
- Ikuro Suzuki
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
| | - Naoki Matsuda
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
| | - Xiaobo Han
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
| | - Shuhei Noji
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
| | - Mikako Shibata
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
| | - Nami Nagafuku
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
| | - Yuto Ishibashi
- Department of Electronics, Graduate School of Engineering, Tohoku Institute of Technology, 35-1 Yagiyama Kasumicho, Taihaku-ku, Sendai, Miyagi, 982-8577, Japan
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11
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Muzzi L, Di Lisa D, Falappa M, Pepe S, Maccione A, Pastorino L, Martinoia S, Frega M. Human-Derived Cortical Neurospheroids Coupled to Passive, High-Density and 3D MEAs: A Valid Platform for Functional Tests. Bioengineering (Basel) 2023; 10:bioengineering10040449. [PMID: 37106636 PMCID: PMC10136157 DOI: 10.3390/bioengineering10040449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2023] [Accepted: 03/31/2023] [Indexed: 04/29/2023] Open
Abstract
With the advent of human-induced pluripotent stem cells (hiPSCs) and differentiation protocols, methods to create in-vitro human-derived neuronal networks have been proposed. Although monolayer cultures represent a valid model, adding three-dimensionality (3D) would make them more representative of an in-vivo environment. Thus, human-derived 3D structures are becoming increasingly used for in-vitro disease modeling. Achieving control over the final cell composition and investigating the exhibited electrophysiological activity is still a challenge. Thence, methodologies to create 3D structures with controlled cellular density and composition and platforms capable of measuring and characterizing the functional aspects of these samples are needed. Here, we propose a method to rapidly generate neurospheroids of human origin with control over cell composition that can be used for functional investigations. We show a characterization of the electrophysiological activity exhibited by the neurospheroids by using micro-electrode arrays (MEAs) with different types (i.e., passive, C-MOS, and 3D) and number of electrodes. Neurospheroids grown in free culture and transferred on MEAs exhibited functional activity that can be chemically and electrically modulated. Our results indicate that this model holds great potential for an in-depth study of signal transmission to drug screening and disease modeling and offers a platform for in-vitro functional testing.
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Affiliation(s)
- Lorenzo Muzzi
- Department of Informatics, Bioengineering, Robotics, and Systems Engineering (DIBRIS), University of Genoa, 16145 Genoa, Italy
| | - Donatella Di Lisa
- Department of Informatics, Bioengineering, Robotics, and Systems Engineering (DIBRIS), University of Genoa, 16145 Genoa, Italy
| | - Matteo Falappa
- 3Brain AG, 8808 Pfäffikon, Switzerland
- Corticale Srl., 16145 Genoa, Italy
| | - Sara Pepe
- Department of Experimental Medicine (DIMES), University of Genoa, 16132 Genoa, Italy
| | | | - Laura Pastorino
- Department of Informatics, Bioengineering, Robotics, and Systems Engineering (DIBRIS), University of Genoa, 16145 Genoa, Italy
| | - Sergio Martinoia
- Department of Informatics, Bioengineering, Robotics, and Systems Engineering (DIBRIS), University of Genoa, 16145 Genoa, Italy
| | - Monica Frega
- Department of Clinical Neurophysiology, University of Twente, 7522 NB Enschede, The Netherlands
- Department of Human Genetics, Radboudumc, Donders Institute for Brain, Cognition, and Behaviour, 6500 HB Nijmegen, The Netherlands
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12
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Prodan N, Ershad F, Reyes-Alcaraz A, Li L, Mistretta B, Gonzalez L, Rao Z, Yu C, Gunaratne PH, Li N, Schwartz RJ, McConnell BK. Direct reprogramming of cardiomyocytes into cardiac Purkinje-like cells. iScience 2022; 25:105402. [PMID: 36388958 PMCID: PMC9646947 DOI: 10.1016/j.isci.2022.105402] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/06/2022] [Revised: 09/30/2022] [Accepted: 10/14/2022] [Indexed: 11/06/2022] Open
Abstract
Currently, there are no treatments that ameliorate cardiac cell death, the underlying basis of cardiovascular disease. An unexplored cell type in cardiac regeneration is cardiac Purkinje cells; specialized cells from the cardiac conduction system (CCS) responsible for propagating electrical signals. Purkinje cells have tremendous potential as a regenerative treatment because they may intrinsically integrate with the CCS of a recipient myocardium, resulting in more efficient electrical conduction in diseased hearts. This study is the first to demonstrate an effective protocol for the direct reprogramming of human cardiomyocytes into cardiac Purkinje-like cells using small molecules. The cells generated were genetically and functionally similar to native cardiac Purkinje cells, where expression of key cardiac Purkinje genes such as CNTN2, ETV1, PCP4, IRX3, SCN5a, HCN2 and the conduction of electrical signals with increased velocity was observed. This study may help to advance the quest to finding an optimized cell therapy for heart regeneration.
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Affiliation(s)
- Nicole Prodan
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, 4349 Martin Luther King Blvd, Health-2 (H2) Building, Room 5024, Houston, TX 77204-5037, USA
| | - Faheem Ershad
- Department of Biomedical Engineering, Cullen College of Engineering, University of Houston, Houston, TX 77204, USA
| | - Arfaxad Reyes-Alcaraz
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, 4349 Martin Luther King Blvd, Health-2 (H2) Building, Room 5024, Houston, TX 77204-5037, USA
| | - Luge Li
- Department of Medicine (Section of Cardiovascular Research), Baylor College of Medicine, Houston, TX 77030, USA
- Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX 77030, USA
| | - Brandon Mistretta
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, USA
- Department of Biology and Biochemistry, UH-Sequencing & Gene Editing Core, University of Houston, Houston, TX 77204, USA
| | - Lei Gonzalez
- Department of Biomedical Engineering, Cullen College of Engineering, University of Houston, Houston, TX 77204, USA
| | - Zhoulyu Rao
- Department of Mechanical Engineering, Cullen College of Engineering, University of Houston, Houston, TX 77204, USA
| | - Cunjiang Yu
- Department of Biomedical Engineering, Cullen College of Engineering, University of Houston, Houston, TX 77204, USA
- Department of Mechanical Engineering, Cullen College of Engineering, University of Houston, Houston, TX 77204, USA
| | - Preethi H. Gunaratne
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, USA
- Department of Biology and Biochemistry, UH-Sequencing & Gene Editing Core, University of Houston, Houston, TX 77204, USA
| | - Na Li
- Department of Medicine (Section of Cardiovascular Research), Baylor College of Medicine, Houston, TX 77030, USA
- Cardiovascular Research Institute, Baylor College of Medicine, Houston, TX 77030, USA
| | - Robert J. Schwartz
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, USA
| | - Bradley K. McConnell
- Department of Pharmacological and Pharmaceutical Sciences, College of Pharmacy, University of Houston, 4349 Martin Luther King Blvd, Health-2 (H2) Building, Room 5024, Houston, TX 77204-5037, USA
- Department of Biology and Biochemistry, University of Houston, Houston, TX 77204, USA
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13
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Mok RSF, Zhang W, Sheikh TI, Pradeepan K, Fernandes IR, DeJong LC, Benigno G, Hildebrandt MR, Mufteev M, Rodrigues DC, Wei W, Piekna A, Liu J, Muotri AR, Vincent JB, Muller L, Martinez-Trujillo J, Salter MW, Ellis J. Wide spectrum of neuronal and network phenotypes in human stem cell-derived excitatory neurons with Rett syndrome-associated MECP2 mutations. Transl Psychiatry 2022; 12:450. [PMID: 36253345 PMCID: PMC9576700 DOI: 10.1038/s41398-022-02216-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/16/2022] [Revised: 10/01/2022] [Accepted: 10/03/2022] [Indexed: 11/19/2022] Open
Abstract
Rett syndrome (RTT) is a severe neurodevelopmental disorder primarily caused by heterozygous loss-of-function mutations in the X-linked gene MECP2 that is a global transcriptional regulator. Mutations in the methyl-CpG binding domain (MBD) of MECP2 disrupt its interaction with methylated DNA. Here, we investigate the effect of a novel MECP2 L124W missense mutation in the MBD of an atypical RTT patient with preserved speech in comparison to severe MECP2 null mutations. L124W protein had a limited ability to disrupt heterochromatic chromocenters due to decreased binding dynamics. We isolated two pairs of isogenic WT and L124W induced pluripotent stem cells. L124W induced excitatory neurons expressed stable protein, exhibited increased input resistance and decreased voltage-gated Na+ and K+ currents, and their neuronal dysmorphology was limited to decreased dendritic complexity. Three isogenic pairs of MECP2 null neurons had the expected more extreme morphological and electrophysiological phenotypes. We examined development and maturation of L124W and MECP2 null excitatory neural network activity using micro-electrode arrays. Relative to isogenic controls, L124W neurons had an increase in synchronous network burst frequency, in contrast to MECP2 null neurons that suffered a significant decrease in synchronous network burst frequency and a transient extension of network burst duration. A biologically motivated computational neural network model shows the observed changes in network dynamics are explained by changes in intrinsic Na+ and K+ currents in individual neurons. Our multilevel results demonstrate that RTT excitatory neurons show a wide spectrum of morphological, electrophysiological and circuitry phenotypes that are dependent on the severity of the MECP2 mutation.
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Grants
- R01 MH108528 NIMH NIH HHS
- MOP-133423 CIHR
- R01 MH109885 NIMH NIH HHS
- FDN-154336 CIHR
- R01 MH100175 NIMH NIH HHS
- Col Harland Sanders Rett Syndrome Research Fund at the University of Toronto (to J.E.), SFARI (Research grant #514918 to J.E. and J.M-T), CIHR (MOP-133423 to J.E. and M.W.S.; ERARE Team Grant ERT161303 to J.E.), CIHR foundation grant (FDN-154336 to M.W.S), Ontario Brain Institute (POND Network to J.E.), McLaughlin Centre Accelerator grant (to J.E.), John Evans Leadership Fund & Ontario Research Fund (to J.E), Canada Research Chair in Stem Cell Models of Childhood Disease (to J.E.), Beta Sigma Phi International Endowment Fund (to J.E.).
- BrainsCAN at Western University through the Canada First Research Excellence Fund (CFREF) (to GB, KP, LM, JMT). NSERC Postgraduate Scholarship–Doctoral (PGS-D) Scholarship to KP.
- Trainee support was provided by Restracomp (to LCD).
- National Institutes of Health (NIH) grants # R01MH108528, R01MH109885, and R01MH1000175 to ARM.
- Ontario Rett Syndrome Association to JBV.
- SFARI (Research grant #514918 to J.E. and J.M-T), BrainsCAN at Western University through the Canada First Research Excellence Fund (CFREF) (to GB, KP, LM, JMT)
- CIHR (MOP-133423 to J.E. and M.W.S.; CIHR foundation grant (FDN-154336 to M.W.S),
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Affiliation(s)
- Rebecca S F Mok
- Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S 1A8, Canada
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Wenbo Zhang
- Neurosciences & Mental Health Program, The Hospital for Sick Children, Toronto, M5G 0A4, ON, Canada
| | - Taimoor I Sheikh
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, M5T 1R8, Canada
| | - Kartik Pradeepan
- Department of Physiology and Pharmacology, Department of Psychiatry, Neuroscience Graduate Program, Robarts Research and Brain and Mind Institutes, Schulich School of Medicine and Dentistry, Western University, London, ON, N6A 5B7, Canada
| | - Isabella R Fernandes
- University of California San Diego, School of Medicine, Department of Pediatrics/Rady Children's Hospital San Diego, Department of Cellular & Molecular Medicine, Stem Cell Program, La Jolla, CA, 92037-0695, USA
| | - Leah C DeJong
- Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S 1A8, Canada
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Gabriel Benigno
- Department of Applied Mathematics, Robarts Research Institute, Brain and Mind Institute, Western University, London, ON, N6A 5B7, Canada
| | - Matthew R Hildebrandt
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Marat Mufteev
- Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S 1A8, Canada
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Deivid C Rodrigues
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Wei Wei
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Alina Piekna
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Jiajie Liu
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada
| | - Alysson R Muotri
- University of California San Diego, School of Medicine, Department of Pediatrics/Rady Children's Hospital San Diego, Department of Cellular & Molecular Medicine, Stem Cell Program, La Jolla, CA, 92037-0695, USA
- Department of Pediatrics/Rady Children's Hospital, Department of Cellular & Molecular Medicine, Center for Academic Research and Training in Anthropogeny, Archealization Center, Kavli Institute, University of California San Diego, La Jolla, CA, 92037, USA
| | - John B Vincent
- Molecular Neuropsychiatry & Development (MiND) Lab, Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health, Toronto, ON, M5T 1R8, Canada
| | - Lyle Muller
- Department of Applied Mathematics, Robarts Research Institute, Brain and Mind Institute, Western University, London, ON, N6A 5B7, Canada
| | - Julio Martinez-Trujillo
- Department of Physiology and Pharmacology, Department of Psychiatry, Neuroscience Graduate Program, Robarts Research and Brain and Mind Institutes, Schulich School of Medicine and Dentistry, Western University, London, ON, N6A 5B7, Canada
| | - Michael W Salter
- Neurosciences & Mental Health Program, The Hospital for Sick Children, Toronto, M5G 0A4, ON, Canada
- Department of Physiology, University of Toronto, Toronto, ON, M5S 1A8, Canada
| | - James Ellis
- Department of Molecular Genetics, University of Toronto, Toronto, ON, M5S 1A8, Canada.
- Developmental & Stem Cell Biology Program, The Hospital for Sick Children, Toronto, ON, M5G 0A4, Canada.
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