1
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Eid L, Lokmane L, Raju PK, Tene Tadoum SB, Jiang X, Toulouse K, Lupien-Meilleur A, Charron-Ligez F, Toumi A, Backer S, Lachance M, Lavertu-Jolin M, Montseny M, Lacaille JC, Bloch-Gallego E, Rossignol E. Both GEF domains of the autism and developmental epileptic encephalopathy-associated Trio protein are required for proper tangential migration of GABAergic interneurons. Mol Psychiatry 2024:10.1038/s41380-024-02742-y. [PMID: 39300136 DOI: 10.1038/s41380-024-02742-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/23/2022] [Revised: 08/19/2024] [Accepted: 09/02/2024] [Indexed: 09/22/2024]
Abstract
Recessive and de novo mutations in the TRIO gene are associated with intellectual deficiency (ID), autism spectrum disorder (ASD) and developmental epileptic encephalopathies (DEE). TRIO is a dual guanine nucleotide exchange factor (GEF) that activates Rac1, Cdc42 and RhoA. Trio has been extensively studied in excitatory neurons, and has recently been found to regulate the switch from tangential to radial migration in GABAergic interneurons (INs) through GEFD1-Rac1-dependent SDF1α/CXCR4 signaling. Given the central role of Rho-GTPases during neuronal migration and the implication of IN pathologies in ASD and DEE, we investigated the relative roles of both Trio's GEF domains in regulating the dynamics of INs tangential migration. In Trio-/- mice, we observed reduced numbers of tangentially migrating INs, with intact progenitor proliferation. Further, we noted increased growth cone collapse in developing INs, suggesting altered cytoskeleton dynamics. To bypass the embryonic mortality of Trio-/- mice, we generated Dlx5/6Cre;Trioc/c conditional mutant mice (TriocKO), which develop spontaneous seizures and behavioral deficits reminiscent of ASD and ID. These phenotypes are associated with reduced cortical IN density and functional cortical inhibition. Mechanistically, this reduction of cortical IN numbers reflects a premature switch to radial migration, with an aberrant early entry in the cortical plate, as well as major deficits in cytoskeletal dynamics, including enhanced leading neurite branching and slower nucleokinesis reflecting reduced actin filament condensation and turnover as well as a loss of response to the motogenic effect of EphA4/ephrin A2 reverse signaling. Further, we show that both Trio GEFD1 and GEFD2 domains are required for proper IN migration, with a dominant role of the RhoA-activating GEFD2 domain. Altogether, our data show a critical role of the DEE/ASD-associated Trio gene in the establishment of cortical inhibition and the requirement of both GEF domains in regulating IN migration dynamics.
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Affiliation(s)
- Lara Eid
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada
- Département de neurosciences, Université de Montréal, Montréal, QC, Canada
| | - Ludmilla Lokmane
- Institut de Biologie de l'ENS (IBENS), École Normale Supérieure, CNRS, INSERM, Université PSL, 75005, Paris, France
| | - Praveen K Raju
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada
- Département de neurosciences, Université de Montréal, Montréal, QC, Canada
| | - Samuel Boris Tene Tadoum
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada
- Département de neurosciences, Université de Montréal, Montréal, QC, Canada
| | - Xiao Jiang
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada
| | - Karolanne Toulouse
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada
- Département de neurosciences, Université de Montréal, Montréal, QC, Canada
| | - Alexis Lupien-Meilleur
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada
- Département de neurosciences, Université de Montréal, Montréal, QC, Canada
| | - François Charron-Ligez
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada
| | - Asmaa Toumi
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada
| | - Stéphanie Backer
- Institut Cochin- INSERM, U1016-CNRS UMR 8104-Université Paris Cité -24, rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Mathieu Lachance
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada
| | - Marisol Lavertu-Jolin
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada
| | - Marie Montseny
- Institut Cochin- INSERM, U1016-CNRS UMR 8104-Université Paris Cité -24, rue du Faubourg Saint-Jacques, 75014, Paris, France
| | - Jean-Claude Lacaille
- Département de neurosciences, Université de Montréal, Montréal, QC, Canada
- Centre interdisciplinaire de recherche sur le cerveau et l'apprentissage, Groupe de recherche sur la signalisation neurale et la circuiterie, Université de Montréal, Montréal, QC, Canada
| | - Evelyne Bloch-Gallego
- Institut Cochin- INSERM, U1016-CNRS UMR 8104-Université Paris Cité -24, rue du Faubourg Saint-Jacques, 75014, Paris, France.
| | - Elsa Rossignol
- Centre de recherche du CHU Sainte-Justine, 3175 Côte Ste-Catherine, Montréal, QC, H3T 1C5, Canada.
- Département de neurosciences, Université de Montréal, Montréal, QC, Canada.
- Département de Pédiatrie, Université de Montréal, Montréal, QC, Canada.
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2
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Qiu H, Miraucourt LS, Petitjean H, Xu M, Theriault C, Davidova A, Soubeyre V, Poulen G, Lonjon N, Vachiery-Lahaye F, Bauchet L, Levesque-Damphousse P, Estall JL, Bourinet E, Sharif-Naeini R. Parvalbumin gates chronic pain through the modulation of firing patterns in inhibitory neurons. Proc Natl Acad Sci U S A 2024; 121:e2403777121. [PMID: 38916998 PMCID: PMC11228497 DOI: 10.1073/pnas.2403777121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2024] [Accepted: 05/14/2024] [Indexed: 06/27/2024] Open
Abstract
Spinal cord dorsal horn inhibition is critical to the processing of sensory inputs, and its impairment leads to mechanical allodynia. How this decreased inhibition occurs and whether its restoration alleviates allodynic pain are poorly understood. Here, we show that a critical step in the loss of inhibitory tone is the change in the firing pattern of inhibitory parvalbumin (PV)-expressing neurons (PVNs). Our results show that PV, a calcium-binding protein, controls the firing activity of PVNs by enabling them to sustain high-frequency tonic firing patterns. Upon nerve injury, PVNs transition to adaptive firing and decrease their PV expression. Interestingly, decreased PV is necessary and sufficient for the development of mechanical allodynia and the transition of PVNs to adaptive firing. This transition of the firing pattern is due to the recruitment of calcium-activated potassium (SK) channels, and blocking them during chronic pain restores normal tonic firing and alleviates chronic pain. Our findings indicate that PV is essential for controlling the firing pattern of PVNs and for preventing allodynia. Developing approaches to manipulate these mechanisms may lead to different strategies for chronic pain relief.
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Affiliation(s)
- Haoyi Qiu
- Department of Physiology, McGill University, Montreal, QCH3G 1Y6, Canada
- Alan Edwards Center for Research on Pain, McGill University, Montreal, QCH3A 2B4, Canada
| | - Loïs S. Miraucourt
- Department of Physiology, McGill University, Montreal, QCH3G 1Y6, Canada
- Alan Edwards Center for Research on Pain, McGill University, Montreal, QCH3A 2B4, Canada
| | - Hugues Petitjean
- Department of Physiology, McGill University, Montreal, QCH3G 1Y6, Canada
- Alan Edwards Center for Research on Pain, McGill University, Montreal, QCH3A 2B4, Canada
| | - Mengyi Xu
- Department of Physiology, McGill University, Montreal, QCH3G 1Y6, Canada
- Alan Edwards Center for Research on Pain, McGill University, Montreal, QCH3A 2B4, Canada
| | - Catherine Theriault
- Department of Physiology, McGill University, Montreal, QCH3G 1Y6, Canada
- Alan Edwards Center for Research on Pain, McGill University, Montreal, QCH3A 2B4, Canada
| | - Albena Davidova
- Department of Physiology, McGill University, Montreal, QCH3G 1Y6, Canada
- Alan Edwards Center for Research on Pain, McGill University, Montreal, QCH3A 2B4, Canada
| | - Vanessa Soubeyre
- Institute of Functional Genomics, Montpellier University, CNRS, INSERM, Montpellier34000, France
| | - Gaetan Poulen
- Department of Neurosurgery, Gui de Chauliac Hospital, and Donation and Transplantation Coordination Unit, Montpellier University Medical Center, Montpellier34295, France
| | - Nicolas Lonjon
- Department of Neurosurgery, Gui de Chauliac Hospital, and Donation and Transplantation Coordination Unit, Montpellier University Medical Center, Montpellier34295, France
| | - Florence Vachiery-Lahaye
- Department of Neurosurgery, Gui de Chauliac Hospital, and Donation and Transplantation Coordination Unit, Montpellier University Medical Center, Montpellier34295, France
| | - Luc Bauchet
- Institute of Functional Genomics, Montpellier University, CNRS, INSERM, Montpellier34000, France
- Department of Neurosurgery, Gui de Chauliac Hospital, and Donation and Transplantation Coordination Unit, Montpellier University Medical Center, Montpellier34295, France
| | | | - Jennifer L. Estall
- Institut de Recherches Cliniques de Montréal, Montreal, QCH2W 1R7, Canada
| | - Emmanuel Bourinet
- Institute of Functional Genomics, Montpellier University, CNRS, INSERM, Montpellier34000, France
| | - Reza Sharif-Naeini
- Department of Physiology, McGill University, Montreal, QCH3G 1Y6, Canada
- Alan Edwards Center for Research on Pain, McGill University, Montreal, QCH3A 2B4, Canada
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3
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Leon WRM, Steffen DM, Dale-Huang FR, Rakela B, Breevoort A, Romero-Rodriguez R, Hasenstaub AR, Stryker MP, Weiner JA, Alvarez-Buylla A. The clustered gamma protocadherin PcdhγC4 isoform regulates cortical interneuron programmed cell death in the mouse cortex. Proc Natl Acad Sci U S A 2024; 121:e2313596120. [PMID: 38285948 PMCID: PMC10861877 DOI: 10.1073/pnas.2313596120] [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: 08/07/2023] [Accepted: 11/16/2023] [Indexed: 01/31/2024] Open
Abstract
Cortical inhibitory interneurons (cINs) are born in the ventral forebrain and migrate into the cortex where they make connections with locally produced excitatory glutamatergic neurons. Cortical function critically depends on the number of cINs, which is also key to establishing the appropriate inhibitory/excitatory balance. The final number of cINs is determined during a postnatal period of programmed cell death (PCD) when ~40% of the young cINs are eliminated. Previous work shows that the loss of clustered gamma protocadherins (Pcdhgs), but not of genes in the Pcdha or Pcdhb clusters, dramatically increased BAX-dependent cIN PCD. Here, we show that PcdhγC4 is highly expressed in cINs of the mouse cortex and that this expression increases during PCD. The sole deletion of the PcdhγC4 isoform, but not of the other 21 isoforms in the Pcdhg gene cluster, increased cIN PCD. Viral expression of the PcdhγC4, in cIN lacking the function of the entire Pcdhg cluster, rescued most of these cells from cell death. We conclude that PcdhγC4 plays a critical role in regulating the survival of cINs during their normal period of PCD. This highlights how a single isoform of the Pcdhg cluster, which has been linked to human neurodevelopmental disorders, is essential to adjust cIN cell numbers during cortical development.
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Affiliation(s)
- Walter R. Mancia Leon
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA94143
| | - David M. Steffen
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA94143
- Department of Biology, The University of Iowa, Iowa City, IA52242
| | - Fiona R. Dale-Huang
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA94143
| | - Benjamin Rakela
- Department of Physiology, University of California, San Francisco, San Francisco, CA94143
| | - Arnar Breevoort
- Department of Physiology, University of California, San Francisco, San Francisco, CA94143
| | - Ricardo Romero-Rodriguez
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA94143
| | - Andrea R. Hasenstaub
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, CA94143
- Kavli Institute for Fundamental Neuroscience, University of California, San Francisco, San Francisco, CA94143
| | - Michael P. Stryker
- Department of Physiology, University of California, San Francisco, San Francisco, CA94143
- Kavli Institute for Fundamental Neuroscience, University of California, San Francisco, San Francisco, CA94143
| | - Joshua A. Weiner
- Department of Biology, The University of Iowa, Iowa City, IA52242
| | - Arturo Alvarez-Buylla
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA94143
- Kavli Institute for Fundamental Neuroscience, University of California, San Francisco, San Francisco, CA94143
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4
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Bershteyn M, Bröer S, Parekh M, Maury Y, Havlicek S, Kriks S, Fuentealba L, Lee S, Zhou R, Subramanyam G, Sezan M, Sevilla ES, Blankenberger W, Spatazza J, Zhou L, Nethercott H, Traver D, Hampel P, Kim H, Watson M, Salter N, Nesterova A, Au W, Kriegstein A, Alvarez-Buylla A, Rubenstein J, Banik G, Bulfone A, Priest C, Nicholas CR. Human pallial MGE-type GABAergic interneuron cell therapy for chronic focal epilepsy. Cell Stem Cell 2023; 30:1331-1350.e11. [PMID: 37802038 PMCID: PMC10993865 DOI: 10.1016/j.stem.2023.08.013] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2022] [Revised: 03/17/2023] [Accepted: 08/25/2023] [Indexed: 10/08/2023]
Abstract
Mesial temporal lobe epilepsy (MTLE) is the most common focal epilepsy. One-third of patients have drug-refractory seizures and are left with suboptimal therapeutic options such as brain tissue-destructive surgery. Here, we report the development and characterization of a cell therapy alternative for drug-resistant MTLE, which is derived from a human embryonic stem cell line and comprises cryopreserved, post-mitotic, medial ganglionic eminence (MGE) pallial-type GABAergic interneurons. Single-dose intrahippocampal delivery of the interneurons in a mouse model of chronic MTLE resulted in consistent mesiotemporal seizure suppression, with most animals becoming seizure-free and surviving longer. The grafted interneurons dispersed locally, functionally integrated, persisted long term, and significantly reduced dentate granule cell dispersion, a pathological hallmark of MTLE. These disease-modifying effects were dose-dependent, with a broad therapeutic range. No adverse effects were observed. These findings support an ongoing phase 1/2 clinical trial (NCT05135091) for drug-resistant MTLE.
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Affiliation(s)
| | - Sonja Bröer
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Mansi Parekh
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Yves Maury
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Steven Havlicek
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Sonja Kriks
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Luis Fuentealba
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Seonok Lee
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Robin Zhou
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | | | - Meliz Sezan
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | | | | | - Julien Spatazza
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Li Zhou
- Department of Neurology, University of California, San Francisco, San Francisco, CA 94143, USA; The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA
| | | | - David Traver
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Philip Hampel
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Hannah Kim
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Michael Watson
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Naomi Salter
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | | | - Wai Au
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | - Arnold Kriegstein
- Department of Neurology, University of California, San Francisco, San Francisco, CA 94143, USA; The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Arturo Alvarez-Buylla
- The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, CA 94143, USA; Department of Neurological Surgery, University of California, San Francisco, San Francisco, CA 94143, USA
| | - John Rubenstein
- Department of Psychiatry, Weill Institute for Neurosciences, Kavli Institute for Fundamental Neuroscience, University of California, San Francisco, San Francisco, CA 94143, USA
| | - Gautam Banik
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA
| | | | | | - Cory R Nicholas
- Neurona Therapeutics Inc., South San Francisco, CA 94080, USA.
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5
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Shao W, Zheng H, Zhu J, Li W, Li Y, Hu W, Zhang J, Jing L, Wang K, Jiang X. Deletions of Cacna2d3 in parvalbumin-expressing neurons leads to autistic-like phenotypes in mice. Neurochem Int 2023; 169:105569. [PMID: 37419212 DOI: 10.1016/j.neuint.2023.105569] [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: 03/30/2023] [Revised: 06/23/2023] [Accepted: 07/04/2023] [Indexed: 07/09/2023]
Abstract
Autism spectrum disorder (ASD) is a series of highly inherited neurodevelopmental disorders. Loss-of-function (LOF) mutations in the CACNA2D3 gene are associated with ASD. However, the underlying mechanism is unknown. Dysfunction of cortical interneurons (INs) is strongly implicated in ASD. Parvalbumin-expressing (PV) INs and somatostatin-expressing (SOM) INs are the two most subtypes. Here, we characterized a mouse knockout of the Cacna2d3 gene in PV-expressing neurons (PVCre;Cacna2d3f/f mice) or in SOM-expressing neurons (SOMCre;Cacna2d3f/f mice), respectively. PVCre;Cacna2d3f/f mice showed deficits in the core ASD behavioral domains (including impaired sociability and increased repetitive behavior), as well as anxiety-like behavior and improved spatial memory. Furthermore, loss of Cacna2d3 from a subset of PV neurons results in a reduction of GAD67 and PV expression in the medial prefrontal cortex (mPFC). These may underlie the increased neuronal excitability in the mPFC, which contribute to the abnormal social behavior in PVCre;Cacna2d3f/f mice. Whereas, SOMCre;Cacna2d3f/f mice showed no obvious deficits in social, cognitive, or emotional phenotypes. Our findings provide the first evidence suggesting the causal role of Cacna2d3 insufficiency in PV neurons in autism.
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Affiliation(s)
- Wei Shao
- The School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei, China
| | - Hang Zheng
- The School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei, China
| | - Jingwen Zhu
- The School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei, China
| | - Wenhao Li
- The School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei, China
| | - Yifan Li
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Wenjie Hu
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Juanjuan Zhang
- Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China
| | - Liang Jing
- The School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei, China; Research Center for Translational Medicine, The Second Hospital of Anhui Medical University, Hefei, China; Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.
| | - Kai Wang
- The School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei, China; Department of Neurology, The First Affiliated Hospital of Anhui Medical University, Hefei, China; Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China; Collaborative Innovation Center for Neuropsychiatric Disorders and Mental Health, Hefei, China; Institute of Artificial Intelligence, Hefei Comprehensive National Science Center, Hefei, China.
| | - Xiao Jiang
- The School of Mental Health and Psychological Sciences, Anhui Medical University, Hefei, China; Research Center for Translational Medicine, The Second Hospital of Anhui Medical University, Hefei, China; Anhui Province Key Laboratory of Cognition and Neuropsychiatric Disorders, Hefei, China.
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Kotlinska JH, Grochecki P, Michalak A, Pankowska A, Kochalska K, Suder P, Ner-Kluza J, Matosiuk D, Marszalek-Grabska M. Neonatal Maternal Separation Induces Sexual Dimorphism in Brain Development: The Influence on Amino Acid Levels and Cognitive Disorders. Biomolecules 2023; 13:1449. [PMID: 37892131 PMCID: PMC10605115 DOI: 10.3390/biom13101449] [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: 07/30/2023] [Revised: 09/09/2023] [Accepted: 09/23/2023] [Indexed: 10/29/2023] Open
Abstract
Repeated maternal separation (MS) is a useful experimental model in rodents for studying the long-term influence of early-life stress on brain neurophysiology. In our work, we assessed the effect of repeated MS (postnatal day (PND)1-21, 180 min/day) on the postnatal development of rat brain regions involved in memory using proton magnetic resonance spectroscopy (1HMRS) for tissue volume and the level of amino acids such as glutamate, aspartate, glutamine, glycine and gamma-aminobutyric acid (GABA) in the hippocampus. We assessed whether these effects are sex dependent. We also use novel object recognition (NOR) task to examine the effect of MS on memory and the effect of ethanol on it. Finally, we attempted to ameliorate postnatal stress-induced memory deficits by using VU-29, a positive allosteric modulator (PAM) of the metabotropic glutamate type 5 (mGlu5) receptor. In males, we noted deficits in the levels of glutamate, glycine and glutamine and increases in GABA in the hippocampus. In addition, the values of perirhinal cortex, prefrontal cortex and insular cortex and CA3 were decreased in these animals. MS females, in contrast, demonstrated significant increase in glutamate levels and decrease in GABA levels in the hippocampus. Here, the CA1 values alone were increased. VU-29 administration ameliorated these cognitive deficits. Thus, MS stress disturbs amino acids levels mainly in the hippocampus of adult male rats, and enhancement of glutamate neurotransmission reversed recognition memory deficits in these animals.
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Affiliation(s)
- Jolanta H. Kotlinska
- Department of Pharmacology and Pharmacodynamics, Medical University, Chodzki 4A, 20-093 Lublin, Poland;
| | - Pawel Grochecki
- Department of Pharmacology and Pharmacodynamics, Medical University, Chodzki 4A, 20-093 Lublin, Poland;
| | - Agnieszka Michalak
- Independent Laboratory of Behavioral Studies, Medical University, Chodzki 4A, 20-093 Lublin, Poland;
| | - Anna Pankowska
- Department of Radiography, Medical University, Staszica 16, 20-081 Lublin, Poland; (A.P.); (K.K.)
| | - Katarzyna Kochalska
- Department of Radiography, Medical University, Staszica 16, 20-081 Lublin, Poland; (A.P.); (K.K.)
| | - Piotr Suder
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, A. Mickiewicza 30, 30-059 Krakow, Poland; (P.S.); (J.N.-K.)
| | - Joanna Ner-Kluza
- Department of Analytical Chemistry and Biochemistry, Faculty of Materials Science and Ceramics, AGH University of Science and Technology, A. Mickiewicza 30, 30-059 Krakow, Poland; (P.S.); (J.N.-K.)
| | - Dariusz Matosiuk
- Department of Synthesis and Chemical Technology of Pharmaceutical Substances with Computer Modelling Lab, Medical University, Chodzki 4A, 20-093 Lublin, Poland;
| | - Marta Marszalek-Grabska
- Department of Experimental and Clinical Pharmacology, Medical University, Jaczewskiego 8B, 20-090 Lublin, Poland;
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7
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Toudji I, Toumi A, Chamberland É, Rossignol E. Interneuron odyssey: molecular mechanisms of tangential migration. Front Neural Circuits 2023; 17:1256455. [PMID: 37779671 PMCID: PMC10538647 DOI: 10.3389/fncir.2023.1256455] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2023] [Accepted: 08/21/2023] [Indexed: 10/03/2023] Open
Abstract
Cortical GABAergic interneurons are critical components of neural networks. They provide local and long-range inhibition and help coordinate network activities involved in various brain functions, including signal processing, learning, memory and adaptative responses. Disruption of cortical GABAergic interneuron migration thus induces profound deficits in neural network organization and function, and results in a variety of neurodevelopmental and neuropsychiatric disorders including epilepsy, intellectual disability, autism spectrum disorders and schizophrenia. It is thus of paramount importance to elucidate the specific mechanisms that govern the migration of interneurons to clarify some of the underlying disease mechanisms. GABAergic interneurons destined to populate the cortex arise from multipotent ventral progenitor cells located in the ganglionic eminences and pre-optic area. Post-mitotic interneurons exit their place of origin in the ventral forebrain and migrate dorsally using defined migratory streams to reach the cortical plate, which they enter through radial migration before dispersing to settle in their final laminar allocation. While migrating, cortical interneurons constantly change their morphology through the dynamic remodeling of actomyosin and microtubule cytoskeleton as they detect and integrate extracellular guidance cues generated by neuronal and non-neuronal sources distributed along their migratory routes. These processes ensure proper distribution of GABAergic interneurons across cortical areas and lamina, supporting the development of adequate network connectivity and brain function. This short review summarizes current knowledge on the cellular and molecular mechanisms controlling cortical GABAergic interneuron migration, with a focus on tangential migration, and addresses potential avenues for cell-based interneuron progenitor transplants in the treatment of neurodevelopmental disorders and epilepsy.
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Affiliation(s)
- Ikram Toudji
- Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Center, Montréal, QC, Canada
- Department of Neurosciences, Université de Montréal, Montréal, QC, Canada
| | - Asmaa Toumi
- Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Center, Montréal, QC, Canada
- Department of Biochemistry and Molecular Medicine, Université de Montréal, Montréal, QC, Canada
| | - Émile Chamberland
- Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Center, Montréal, QC, Canada
- Department of Neurosciences, Université de Montréal, Montréal, QC, Canada
| | - Elsa Rossignol
- Centre Hospitalier Universitaire (CHU) Sainte-Justine Research Center, Montréal, QC, Canada
- Department of Neurosciences, Université de Montréal, Montréal, QC, Canada
- Department of Pediatrics, Université de Montréal, Montréal, QC, Canada
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8
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Batista-Brito R, Majumdar A, Nuño A, Ward C, Barnes C, Nikouei K, Vinck M, Cardin JA. Developmental loss of ErbB4 in PV interneurons disrupts state-dependent cortical circuit dynamics. Mol Psychiatry 2023; 28:3133-3143. [PMID: 37069344 PMCID: PMC10618960 DOI: 10.1038/s41380-023-02066-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/28/2023] [Accepted: 04/03/2023] [Indexed: 04/19/2023]
Abstract
GABAergic inhibition plays an important role in the establishment and maintenance of cortical circuits during development. Neuregulin 1 (Nrg1) and its interneuron-specific receptor ErbB4 are key elements of a signaling pathway critical for the maturation and proper synaptic connectivity of interneurons. Using conditional deletions of the ERBB4 gene in mice, we tested the role of this signaling pathway at two developmental timepoints in parvalbumin-expressing (PV) interneurons, the largest subpopulation of cortical GABAergic cells. Loss of ErbB4 in PV interneurons during embryonic, but not late postnatal development leads to alterations in the activity of excitatory and inhibitory cortical neurons, along with severe disruption of cortical temporal organization. These impairments emerge by the end of the second postnatal week, prior to the complete maturation of the PV interneurons themselves. Early loss of ErbB4 in PV interneurons also results in profound dysregulation of excitatory pyramidal neuron dendritic architecture and a redistribution of spine density at the apical dendritic tuft. In association with these deficits, excitatory cortical neurons exhibit normal tuning for sensory inputs, but a loss of state-dependent modulation of the gain of sensory responses. Together these data support a key role for early developmental Nrg1/ErbB4 signaling in PV interneurons as a powerful mechanism underlying the maturation of both the inhibitory and excitatory components of cortical circuits.
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Affiliation(s)
- Renata Batista-Brito
- Department of Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA.
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA.
- Department of Psychiatry and Behavioral Sciences, Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA.
- Department of Genetics, Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA.
| | - Antara Majumdar
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
- Department of Physiology, Anatomy and Genetics, University of Oxford, Sherrington Building, Sherrington Road, Oxford, OX1 3PT, England
| | - Alejandro Nuño
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
| | - Claire Ward
- Department of Neuroscience, Albert Einstein College of Medicine, 1300 Morris Park Ave, The Bronx, NY, 10461, USA
| | - Clayton Barnes
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
| | - Kasra Nikouei
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
- Department of Medical Biochemistry and Biophysics, Karolinska Institutet, Stockholm, Sweden
| | - Martin Vinck
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA
- Ernst Strüngmann Institute (ESI) for Neuroscience in Cooperation with Max Planck Society, Deutschordenstraße 46, 60528, Frankfurt, Germany
| | - Jessica A Cardin
- Department of Neuroscience, Yale University School of Medicine, 333 Cedar St., New Haven, CT, 06520, USA.
- Kavli Institute of Neuroscience, Yale University, 333 Cedar St., New Haven, CT, 06520, USA.
- Wu Tsai Institute, Yale University, 100 College St., New Haven, CT, 06520, USA.
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9
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Leon WRM, Steffen DM, Dale-Huang F, Rakela B, Breevoort A, Romero-Rodriguez R, Hasenstaub AR, Stryker MP, Weiner JA, Alvarez-Buylla A. The Clustered Gamma Protocadherin Pcdhγc4 Isoform Regulates Cortical Interneuron Programmed Cell Death in the Mouse Cortex. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2023:2023.02.03.526887. [PMID: 36778455 PMCID: PMC9915683 DOI: 10.1101/2023.02.03.526887] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Cortical function critically depends on inhibitory/excitatory balance. Cortical inhibitory interneurons (cINs) are born in the ventral forebrain and migrate into cortex, where their numbers are adjusted by programmed cell death. Previously, we showed that loss of clustered gamma protocadherins (Pcdhγ), but not of genes in the alpha or beta clusters, increased dramatically cIN BAX-dependent cell death in mice. Here we show that the sole deletion of the Pcdhγc4 isoform, but not of the other 21 isoforms in the Pcdhγ gene cluster, increased cIN cell death in mice during the normal period of programmed cell death. Viral expression of the Pcdhγc4 isoform rescued transplanted cINs lacking Pcdhγ from cell death. We conclude that Pcdhγ, specifically Pcdhγc4, plays a critical role in regulating the survival of cINs during their normal period of cell death. This demonstrates a novel specificity in the role of Pcdhγ isoforms in cortical development.
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Affiliation(s)
- Walter R Mancia Leon
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, United States
| | - David M Steffen
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, United States
- Iowa Neuroscience Institute, The University of Iowa, Iowa City, IA 52242
- Department of Biology, The University of Iowa, Iowa City IA 52242
| | - Fiona Dale-Huang
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, United States
| | - Benjamin Rakela
- Department of Physiology and Center for Integrative Neuroscience, University of California, San Francisco, San Francisco, United States
| | - Arnar Breevoort
- Department of Physiology and Center for Integrative Neuroscience, University of California, San Francisco, San Francisco, United States
| | - Ricardo Romero-Rodriguez
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, United States
| | - Andrea R Hasenstaub
- Department of Otolaryngology-Head and Neck Surgery, University of California, San Francisco, San Francisco, United States
- Kavli Institute for Fundamental Neuroscience, University of California, San Francisco, San Francisco, United States
| | - Michael P Stryker
- Department of Physiology and Center for Integrative Neuroscience, University of California, San Francisco, San Francisco, United States
- Kavli Institute for Fundamental Neuroscience, University of California, San Francisco, San Francisco, United States
| | - Joshua A Weiner
- Iowa Neuroscience Institute, The University of Iowa, Iowa City, IA 52242
- Department of Biology, The University of Iowa, Iowa City IA 52242
| | - Arturo Alvarez-Buylla
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San Francisco, San Francisco, United States
- Kavli Institute for Fundamental Neuroscience, University of California, San Francisco, San Francisco, United States
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10
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Liaci C, Camera M, Zamboni V, Sarò G, Ammoni A, Parmigiani E, Ponzoni L, Hidisoglu E, Chiantia G, Marcantoni A, Giustetto M, Tomagra G, Carabelli V, Torelli F, Sala M, Yanagawa Y, Obata K, Hirsch E, Merlo GR. Loss of ARHGAP15 affects the directional control of migrating interneurons in the embryonic cortex and increases susceptibility to epilepsy. Front Cell Dev Biol 2022; 10:875468. [PMID: 36568982 PMCID: PMC9774038 DOI: 10.3389/fcell.2022.875468] [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: 02/14/2022] [Accepted: 11/07/2022] [Indexed: 12/13/2022] Open
Abstract
GTPases of the Rho family are components of signaling pathways linking extracellular signals to the control of cytoskeleton dynamics. Among these, RAC1 plays key roles during brain development, ranging from neuronal migration to neuritogenesis, synaptogenesis, and plasticity. RAC1 activity is positively and negatively controlled by guanine nucleotide exchange factors (GEFs), guanosine nucleotide dissociation inhibitors (GDIs), and GTPase-activating proteins (GAPs), but the specific role of each regulator in vivo is poorly known. ARHGAP15 is a RAC1-specific GAP expressed during development in a fraction of migrating cortical interneurons (CINs) and in the majority of adult CINs. During development, loss of ARHGAP15 causes altered directionality of the leading process of tangentially migrating CINs, along with altered morphology in vitro. Likewise, time-lapse imaging of embryonic CINs revealed a poorly coordinated directional control during radial migration, possibly due to a hyper-exploratory behavior. In the adult cortex, the observed defects lead to subtle alteration in the distribution of CALB2-, SST-, and VIP-positive interneurons. Adult Arhgap15-knock-out mice also show reduced CINs intrinsic excitability, spontaneous subclinical seizures, and increased susceptibility to the pro-epileptic drug pilocarpine. These results indicate that ARHGAP15 imposes a fine negative regulation on RAC1 that is required for morphological maturation and directional control during CIN migration, with consequences on their laminar distribution and inhibitory function.
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Affiliation(s)
- Carla Liaci
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin, Italy
| | - Mattia Camera
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin, Italy
| | - Valentina Zamboni
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin, Italy
| | - Gabriella Sarò
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin, Italy
| | - Alessandra Ammoni
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin, Italy
| | | | - Luisa Ponzoni
- Neuroscience Institute, Consiglio Nazionale Ricerche, Milan, Italy
| | - Enis Hidisoglu
- Department of Drug Science, NIS Center, University of Turin, Turin, Italy
| | - Giuseppe Chiantia
- Department of Neuroscience and National Institute of Neuroscience, University of Turin, Turin, Italy
| | - Andrea Marcantoni
- Department of Drug Science, NIS Center, University of Turin, Turin, Italy
| | - Maurizio Giustetto
- Department of Neuroscience and National Institute of Neuroscience, University of Turin, Turin, Italy
| | - Giulia Tomagra
- Department of Drug Science, NIS Center, University of Turin, Turin, Italy
| | | | - Federico Torelli
- Institute for Physiology I, Medical Faculty, Albert-Ludwigs-University Freiburg, Freiburg, Germany,Faculty of Biology, Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - Mariaelvina Sala
- Neuroscience Institute, Consiglio Nazionale Ricerche, Milan, Italy
| | - Yuchio Yanagawa
- Department of Genetic Behavioral Neuroscience, Gunma University, Maebashi, Japan
| | | | - Emilio Hirsch
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin, Italy
| | - Giorgio R. Merlo
- Department of Molecular Biotechnologies and Health Sciences, University of Turin, Turin, Italy,*Correspondence: Giorgio R. Merlo,
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11
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Armenta-Resendiz M, Assali A, Tsvetkov E, Cowan CW, Lavin A. Repeated methamphetamine administration produces cognitive deficits through augmentation of GABAergic synaptic transmission in the prefrontal cortex. Neuropsychopharmacology 2022; 47:1816-1825. [PMID: 35788684 PMCID: PMC9372065 DOI: 10.1038/s41386-022-01371-9] [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: 05/02/2022] [Revised: 06/14/2022] [Accepted: 06/22/2022] [Indexed: 11/08/2022]
Abstract
Methamphetamine (METH) abuse is associated with the emergence of cognitive deficits and hypofrontality, a pathophysiological marker of many neuropsychiatric disorders that is produced by altered balance of local excitatory and inhibitory synaptic transmission. However, there is a dearth of information regarding the cellular and synaptic mechanisms underlying METH-induced cognitive deficits and associated hypofrontal states. Using PV-Cre transgenic rats that went through a METH sensitization regime or saline (SAL) followed by 7-10 days of home cage abstinence combined with cognitive tests, chemogenetic experiments, and whole-cell patch recordings on the prelimbic prefrontal cortex (PFC), we investigated the cellular and synaptic mechanisms underlying METH-induce hypofrontality. We report here that repeated METH administration in rats produces deficits in working memory and increases in inhibitory synaptic transmission onto pyramidal neurons in the PFC. The increased PFC inhibition is detected by an increase in spontaneous and evoked inhibitory postsynaptic synaptic currents (IPSCs), an increase in GABAergic presynaptic function, and a shift in the excitatory-inhibitory balance onto PFC deep-layer pyramidal neurons. We find that pharmacological blockade of D1 dopamine receptor function reduces the METH-induced augmentation of IPSCs, suggesting a critical role for D1 dopamine signaling in METH-induced hypofrontality. In addition, repeated METH administration increases the intrinsic excitability of parvalbumin-positive fast spiking interneurons (PV + FSIs), a key local interneuron population in PFC that contributes to the control of inhibitory tone. Using a cell type-specific chemogenetic approach, we show that increasing PV + FSIs activity in the PFC is necessary and sufficient to cause deficits in temporal order memory similar to those induced by METH. Conversely, reducing PV + FSIs activity in the PFC of METH-exposed rats rescues METH-induced temporal order memory deficits. Together, our findings reveal that repeated METH exposure increases PFC inhibitory tone through a D1 dopamine signaling-dependent potentiation of inhibitory synaptic transmission, and that reduction of PV + FSIs activity can rescue METH-induced cognitive deficits, suggesting a potential therapeutic approach to treating cognitive symptoms in patients suffering from METH use disorder.
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Affiliation(s)
| | - Ahlem Assali
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, USA
| | - Evgeny Tsvetkov
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, USA
| | - Christopher W Cowan
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, USA
| | - Antonieta Lavin
- Department of Neuroscience, Medical University of South Carolina, Charleston, SC, USA.
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12
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Giffin-Rao Y, Sheng J, Strand B, Xu K, Huang L, Medo M, Risgaard KA, Dantinne S, Mohan S, Keshan A, Daley RA, Levesque B, Amundson L, Reese R, Sousa AMM, Tao Y, Wang D, Zhang SC, Bhattacharyya A. Altered patterning of trisomy 21 interneuron progenitors. Stem Cell Reports 2022; 17:1366-1379. [PMID: 35623352 PMCID: PMC9214050 DOI: 10.1016/j.stemcr.2022.05.001] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 05/01/2022] [Accepted: 05/02/2022] [Indexed: 11/17/2022] Open
Abstract
Individuals with Down syndrome (DS; Ts21), the most common genetic cause of intellectual disability, have smaller brains that reflect fewer neurons at pre- and post-natal stages, implicating impaired neurogenesis during development. Our stereological analysis of adult DS cortex indicates a reduction of calretinin-expressing interneurons. Using Ts21 human induced pluripotent stem cells (iPSCs) and isogenic controls, we find that Ts21 progenitors generate fewer COUP-TFII+ progenitors with reduced proliferation. Single-cell RNA sequencing of Ts21 progenitors confirms the altered specification of progenitor subpopulations and identifies reduced WNT signaling. Activation of WNT signaling partially restores the COUP-TFII+ progenitor population in Ts21, suggesting that altered WNT signaling contributes to the defective development of cortical interneurons in DS.
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Affiliation(s)
| | - Jie Sheng
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Bennett Strand
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Ke Xu
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Leslie Huang
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Margaret Medo
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | | | - Samuel Dantinne
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Sruti Mohan
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Aratrika Keshan
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Roger A Daley
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Bradley Levesque
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Lindsey Amundson
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Rebecca Reese
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - André M M Sousa
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Yunlong Tao
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Daifeng Wang
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Biostatistics and Medical Informatics, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Su-Chun Zhang
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neuroscience, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Neurology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA
| | - Anita Bhattacharyya
- Waisman Center, University of Wisconsin-Madison, Madison, WI 53705, USA; Department of Cell and Regenerative Biology, School of Medicine and Public Health, University of Wisconsin-Madison, Madison, WI 53705, USA.
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13
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Zhang Y, Sun X, Dou C, Li X, Zhang L, Qin C. Distinct neuronal excitability alterations of medial prefrontal cortex in early-life neglect model of rats. Animal Model Exp Med 2022; 5:274-280. [PMID: 35748035 PMCID: PMC9240726 DOI: 10.1002/ame2.12252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2022] [Accepted: 05/24/2022] [Indexed: 01/12/2023] Open
Abstract
OBJECT Early-life neglect has irreversible emotional effects on the central nervous system. In this work, we aimed to elucidate distinct functional neural changes in medial prefrontal cortex (mPFC) of model rats. METHODS Maternal separation with early weaning was used as a rat model of early-life neglect. The excitation of glutamatergic and GABAergic neurons in rat mPFC was recorded and analyzed by whole-cell patch clamp. RESULTS Glutamatergic and GABAergic neurons of mPFC were distinguished by typical electrophysiological properties. The excitation of mPFC glutamatergic neurons was significantly increased in male groups, while the excitation of mPFC GABAergic neurons was significant in both female and male groups, but mainly in terms of rest membrane potential and amplitude, respectively. CONCLUSIONS Glutamatergic and GABAergic neurons in medial prefrontal cortex showed different excitability changes in a rat model of early-life neglect, which can contribute to distinct mechanisms for emotional and cognitive manifestations.
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Affiliation(s)
- Yu Zhang
- NHC Key Laboratory of Human Disease Comparative MedicineInstitute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS); Comparative Medicine CenterPeking Union Medical College (PUMC)BeijingChina
- National Human Diseases Animal Model Resource CenterBeijingChina
- Beijing Engineering Research Center for Experimental Animal Models of Human Critical DiseasesBeijingChina
- International Center for Technology and Innovation of animal modelBeijingChina
- Changping National laboratory (CPNL)BeijingChina
| | - Xiuping Sun
- NHC Key Laboratory of Human Disease Comparative MedicineInstitute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS); Comparative Medicine CenterPeking Union Medical College (PUMC)BeijingChina
- National Human Diseases Animal Model Resource CenterBeijingChina
- Beijing Engineering Research Center for Experimental Animal Models of Human Critical DiseasesBeijingChina
- International Center for Technology and Innovation of animal modelBeijingChina
- Changping National laboratory (CPNL)BeijingChina
| | - Changsong Dou
- NHC Key Laboratory of Human Disease Comparative MedicineInstitute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS); Comparative Medicine CenterPeking Union Medical College (PUMC)BeijingChina
- National Human Diseases Animal Model Resource CenterBeijingChina
- Beijing Engineering Research Center for Experimental Animal Models of Human Critical DiseasesBeijingChina
- International Center for Technology and Innovation of animal modelBeijingChina
- Changping National laboratory (CPNL)BeijingChina
| | - Xianglei Li
- NHC Key Laboratory of Human Disease Comparative MedicineInstitute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS); Comparative Medicine CenterPeking Union Medical College (PUMC)BeijingChina
- National Human Diseases Animal Model Resource CenterBeijingChina
- Beijing Engineering Research Center for Experimental Animal Models of Human Critical DiseasesBeijingChina
- International Center for Technology and Innovation of animal modelBeijingChina
- Changping National laboratory (CPNL)BeijingChina
| | - Ling Zhang
- NHC Key Laboratory of Human Disease Comparative MedicineInstitute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS); Comparative Medicine CenterPeking Union Medical College (PUMC)BeijingChina
- National Human Diseases Animal Model Resource CenterBeijingChina
- Beijing Engineering Research Center for Experimental Animal Models of Human Critical DiseasesBeijingChina
- International Center for Technology and Innovation of animal modelBeijingChina
- Changping National laboratory (CPNL)BeijingChina
| | - Chuan Qin
- NHC Key Laboratory of Human Disease Comparative MedicineInstitute of Laboratory Animal SciencesChinese Academy of Medical Sciences (CAMS); Comparative Medicine CenterPeking Union Medical College (PUMC)BeijingChina
- National Human Diseases Animal Model Resource CenterBeijingChina
- Beijing Engineering Research Center for Experimental Animal Models of Human Critical DiseasesBeijingChina
- International Center for Technology and Innovation of animal modelBeijingChina
- Changping National laboratory (CPNL)BeijingChina
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14
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Tanenhaus A, Stowe T, Young A, McLaughlin J, Aeran R, Lin IW, Li J, Hosur R, Chen M, Leedy J, Chou T, Pillay S, Vila MC, Kearney JA, Moorhead M, Belle A, Tagliatela S. Cell-Selective Adeno-Associated Virus-Mediated SCN1A Gene Regulation Therapy Rescues Mortality and Seizure Phenotypes in a Dravet Syndrome Mouse Model and Is Well Tolerated in Nonhuman Primates. Hum Gene Ther 2022; 33:579-597. [PMID: 35435735 PMCID: PMC9242722 DOI: 10.1089/hum.2022.037] [Citation(s) in RCA: 22] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
Dravet syndrome (DS) is a developmental and epileptic encephalopathy caused by monoallelic loss-of-function variants in the SCN1A gene. SCN1A encodes for the alpha subunit of the voltage-gated type I sodium channel (NaV1.1), the primary voltage-gated sodium channel responsible for generation of action potentials in GABAergic inhibitory interneurons. In these studies, we tested the efficacy of an adeno-associated virus serotype 9 (AAV9) SCN1A gene regulation therapy, AAV9-REGABA-eTFSCN1A, designed to target transgene expression to GABAergic inhibitory neurons and reduce off-target expression within excitatory cells, in the Scn1a+/- mouse model of DS. Biodistribution and preliminary safety were evaluated in nonhuman primates (NHPs). AAV9-REGABA-eTFSCN1A was engineered to upregulate SCN1A expression levels within GABAergic inhibitory interneurons to correct the underlying haploinsufficiency and circuit dysfunction. A single bilateral intracerebroventricular (ICV) injection of AAV9-REGABA-eTFSCN1A in Scn1a+/- postnatal day 1 mice led to increased SCN1A mRNA transcripts, specifically within GABAergic inhibitory interneurons, and NaV1.1 protein levels in the brain. This was associated with a significant decrease in the occurrence of spontaneous and hyperthermia-induced seizures, and prolonged survival for over a year. In NHPs, delivery of AAV9-REGABA-eTFSCN1A by unilateral ICV injection led to widespread vector biodistribution and transgene expression throughout the brain, including key structures involved in epilepsy and cognitive behaviors, such as hippocampus and cortex. AAV9-REGABA-eTFSCN1A was well tolerated, with no adverse events during administration, no detectable changes in clinical observations, no adverse findings in histopathology, and no dorsal root ganglion-related toxicity. Our results support the clinical development of AAV9-REGABA-eTFSCN1A (ETX101) as an effective and targeted disease-modifying approach to SCN1A+ DS.
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Affiliation(s)
- Annie Tanenhaus
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - Timothy Stowe
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - Andrew Young
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - John McLaughlin
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - Rangoli Aeran
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - I. Winnie Lin
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - Jianmin Li
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | | | - Ming Chen
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - Jennifer Leedy
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - Tiffany Chou
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - Sirika Pillay
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | | | - Jennifer A. Kearney
- Department of Pharmacology, Northwestern University Feinberg School of Medicine, Chicago, Illinois, USA
| | - Martin Moorhead
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - Archana Belle
- Encoded Therapeutics, Inc., South San Francisco, California, USA
| | - Stephanie Tagliatela
- Encoded Therapeutics, Inc., South San Francisco, California, USA.,Correspondence: Stephanie Tagliatela, Encoded Therapeutics, Inc., 341 Oyster Point Boulevard, South San Francisco, CA 94080, USA.
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15
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Zavalin K, Hassan A, Fu C, Delpire E, Lagrange AH. Loss of KCC2 in GABAergic Neurons Causes Seizures and an Imbalance of Cortical Interneurons. Front Mol Neurosci 2022; 15:826427. [PMID: 35370549 PMCID: PMC8966887 DOI: 10.3389/fnmol.2022.826427] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/21/2022] [Indexed: 11/24/2022] Open
Abstract
K-Cl transporter KCC2 is an important regulator of neuronal development and neuronal function at maturity. Through its canonical transporter role, KCC2 maintains inhibitory responses mediated by γ-aminobutyric acid (GABA) type A receptors. During development, late onset of KCC2 transporter activity defines the period when depolarizing GABAergic signals promote a wealth of developmental processes. In addition to its transporter function, KCC2 directly interacts with a number of proteins to regulate dendritic spine formation, cell survival, synaptic plasticity, neuronal excitability, and other processes. Either overexpression or loss of KCC2 can lead to abnormal circuit formation, seizures, or even perinatal death. GABA has been reported to be especially important for driving migration and development of cortical interneurons (IN), and we hypothesized that properly timed onset of KCC2 expression is vital to this process. To test this hypothesis, we created a mouse with conditional knockout of KCC2 in Dlx5-lineage neurons (Dlx5 KCC2 cKO), which targets INs and other post-mitotic GABAergic neurons in the forebrain starting during embryonic development. While KCC2 was first expressed in the INs of layer 5 cortex, perinatal IN migrations and laminar localization appeared to be unaffected by the loss of KCC2. Nonetheless, the mice had early seizures, failure to thrive, and premature death in the second and third weeks of life. At this age, we found an underlying change in IN distribution, including an excess number of somatostatin neurons in layer 5 and a decrease in parvalbumin-expressing neurons in layer 2/3 and layer 6. Our research suggests that while KCC2 expression may not be entirely necessary for early IN migration, loss of KCC2 causes an imbalance in cortical interneuron subtypes, seizures, and early death. More work will be needed to define the specific cellular basis for these findings, including whether they are due to abnormal circuit formation versus the sequela of defective IN inhibition.
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Affiliation(s)
- Kirill Zavalin
- Department of Neurology, School of Medicine, Vanderbilt University, Nashville, TN, United States
| | - Anjana Hassan
- Department of Neurology, School of Medicine, Vanderbilt University, Nashville, TN, United States
| | - Cary Fu
- Department of Pediatrics, Vanderbilt University Medical Center, Nashville, TN, United States
| | - Eric Delpire
- Department of Anesthesiology, School of Medicine, Vanderbilt University, Nashville, TN, United States
| | - Andre H. Lagrange
- Department of Neurology, School of Medicine, Vanderbilt University, Nashville, TN, United States,Department of Neurology, Tennessee Valley Healthcare – Veterans Affairs (TVH VA), Medical Center, Nashville, TN, United States,*Correspondence: Andre H. Lagrange,
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16
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Chronic partial TrkB activation reduces seizures and mortality in a mouse model of Dravet syndrome. Proc Natl Acad Sci U S A 2022; 119:2022726119. [PMID: 35165147 PMCID: PMC8851461 DOI: 10.1073/pnas.2022726119] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/29/2021] [Indexed: 12/03/2022] Open
Abstract
Dravet syndrome (DS) is a severe childhood epileptic encephalopathy characterized by intractable seizures and comorbidities, including a high rate of premature mortality. DS is mainly caused by loss-of-function mutations of the Scn1a gene encoding sodium channel Nav1.1 that is predominantly expressed in inhibitory parvalbumin-containing (PV) interneurons. Decreased Nav1.1 impairs PV cell function, causing DS phenotypes. Effective pharmacological therapy targeting defective PV interneurons is currently not available. This study demonstrated that early treatment with a partial TrkB receptor agonist, LM22A-4, increased Nav1.1 expression, improved PV interneuron function, and reduced seizure occurrence and mortality rate in DS mice, suggesting a potential therapy for DS. Dravet syndrome (DS) is one of the most severe childhood epilepsies, characterized by intractable seizures and comorbidities including cognitive and social dysfunction and high premature mortality. DS is mainly caused by loss-of-function mutations in the Scn1a gene encoding Nav1.1 that is predominantly expressed in inhibitory parvalbumin-containing (PV) interneurons. Decreased Nav1.1 impairs PV cell function, contributing to DS phenotypes. Effective pharmacological therapy that targets defective PV interneurons is not available. The known role of brain-derived neurotrophic factor (BDNF) in the development and maintenance of interneurons, together with our previous results showing improved PV interneuronal function and antiepileptogenic effects of a TrkB receptor agonist in a posttraumatic epilepsy model, led to the hypothesis that early treatment with a TrkB receptor agonist might prevent or reduce seizure activity in DS mice. To test this hypothesis, we treated DS mice with LM22A-4 (LM), a partial agonist at the BDNF TrkB receptor, for 7 d starting at postnatal day 13 (P13), before the onset of spontaneous seizures. Results from immunohistochemistry, Western blot, whole-cell patch-clamp recording, and in vivo seizure monitoring showed that LM treatment increased the number of perisomatic PV interneuronal synapses around cortical pyramidal cells in layer V, upregulated Nav1.1 in PV neurons, increased inhibitory synaptic transmission, and decreased seizures and the mortality rate in DS mice. The results suggest that early treatment with a partial TrkB receptor agonist may be a promising therapeutic approach to enhance PV interneuron function and reduce epileptogenesis and premature death in DS.
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17
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Rebscher L, Obermayer K, Metzner C. Synchronization Through Uncorrelated Noise in Excitatory-Inhibitory Networks. Front Comput Neurosci 2022; 16:825865. [PMID: 35185505 PMCID: PMC8855529 DOI: 10.3389/fncom.2022.825865] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 01/12/2022] [Indexed: 11/13/2022] Open
Abstract
Gamma rhythms play a major role in many different processes in the brain, such as attention, working memory, and sensory processing. While typically considered detrimental, counterintuitively noise can sometimes have beneficial effects on communication and information transfer. Recently, Meng and Riecke showed that synchronization of interacting networks of inhibitory neurons in the gamma band (i.e., gamma generated through an ING mechanism) increases while synchronization within these networks decreases when neurons are subject to uncorrelated noise. However, experimental and modeling studies point towardz an important role of the pyramidal-interneuronal network gamma (PING) mechanism in the cortex. Therefore, we investigated the effect of uncorrelated noise on the communication between excitatory-inhibitory networks producing gamma oscillations via a PING mechanism. Our results suggest that, at least in a certain range of noise strengths and natural frequency differences between the regions, synaptic noise can have a supporting role in facilitating inter-regional communication, similar to the ING case for a slightly larger parameter range. Furthermore, the noise-induced synchronization between networks is generated via a different mechanism than when synchronization is mediated by strong synaptic coupling. Noise-induced synchronization is achieved by lowering synchronization within networks which allows the respective other network to impose its own gamma rhythm resulting in synchronization between networks.
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Affiliation(s)
- Lucas Rebscher
- Neural Information Processing Group, Technische Universität Berlin, Berlin, Germany
| | - Klaus Obermayer
- Neural Information Processing Group, Technische Universität Berlin, Berlin, Germany
| | - Christoph Metzner
- Neural Information Processing Group, Technische Universität Berlin, Berlin, Germany
- Biocomputation Group, School of Physics, Engineering and Computer Science, University of Hertfordshire, Hatfield, United Kingdom
- *Correspondence: Christoph Metzner
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18
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Chen Y, Zheng Y, Yan J, Zhu C, Zeng X, Zheng S, Li W, Yao L, Xia Y, Su WW, Chen Y. Early Life Stress Induces Different Behaviors in Adolescence and Adulthood May Related With Abnormal Medial Prefrontal Cortex Excitation/Inhibition Balance. Front Neurosci 2022; 15:720286. [PMID: 35058738 PMCID: PMC8765554 DOI: 10.3389/fnins.2021.720286] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/04/2021] [Accepted: 12/02/2021] [Indexed: 12/28/2022] Open
Abstract
Early life stress is thought to be a risk factor for emotional disorders, particularly depression and anxiety. Although the excitation/inhibition (E/I) imbalance has been implicated in neuropsychiatric disorders, whether early life stress affects the E/I balance in the medial prefrontal cortex at various developmental stages is unclear. In this study, rats exposed to maternal separation (MS) that exhibited a well-established early life stress paradigm were used to evaluate the E/I balance in adolescence (postnatal day P43-60) and adulthood (P82-100) by behavior tests, whole-cell recordings, and microdialysis coupled with high performance liquid chromatography-mass spectrometry (HPLC-MS) analysis. First, the behavioral tests revealed that MS induced both anxiety- and depressive-like behaviors in adolescent rats but only depressive-like behavior in adult rats. Second, MS increased the action potential frequency and E/I balance of synaptic transmission onto L5 pyramidal neurons in the prelimbic (PrL) brain region of adolescent rats while decreasing the action potential frequency and E/I balance in adult rats. Finally, MS increases extracellular glutamate levels and decreased the paired-pulse ratio of evoked excitatory postsynaptic currents (EPSCs) of pyramidal neurons in the PrL of adolescent rats. In contrast, MS decreased extracellular glutamate levels and increased the paired-pulse ratio of evoked EPSCs of pyramidal neurons in the PrL of adult rats. The present results reveal a key role of E/I balance in different MS-induced disorders may related to the altered probability of presynaptic glutamate release at different developmental stages.
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Affiliation(s)
- Yiwen Chen
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Yuanjia Zheng
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Jinglan Yan
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Chuanan Zhu
- Department of Integrated Traditional Chinese and Western Medicine, Xiamen Xianyue Hospital, Xiamen, China
| | - Xuan Zeng
- Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Shaoyi Zheng
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Wenwen Li
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China
| | - Lin Yao
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Yucen Xia
- Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, China
| | - Wei-Wei Su
- Guangdong Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, China
| | - Yongjun Chen
- South China Research Center for Acupuncture and Moxibustion, Medical College of Acu-Moxi and Rehabilitation, Guangzhou University of Chinese Medicine, Guangzhou, China.,Research Institute of Acupuncture and Moxibustion, Shandong University of Traditional Chinese Medicine, Jinan, China.,Guangdong-Hong Kong-Macao Greater Bay Area Center for Brain Science and Brain-Inspired Intelligence, Guangzhou, China.,Guangdong Province Key Laboratory of Psychiatric Disorders, Southern Medical University, Guangzhou, China
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19
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Rais M, Lovelace JW, Shuai XS, Woodard W, Bishay S, Estrada L, Sharma AR, Nguy A, Kulinich A, Pirbhoy PS, Palacios AR, Nelson DL, Razak KA, Ethell IM. Functional consequences of postnatal interventions in a mouse model of Fragile X syndrome. Neurobiol Dis 2021; 162:105577. [PMID: 34871737 DOI: 10.1016/j.nbd.2021.105577] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2021] [Revised: 10/22/2021] [Accepted: 12/02/2021] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Fragile X syndrome (FXS) is a leading genetic cause of autism and intellectual disability with cortical hyperexcitability and sensory hypersensitivity attributed to loss and hypofunction of inhibitory parvalbumin-expressing (PV) cells. Our studies provide novel insights into the role of excitatory neurons in abnormal development of PV cells during a postnatal period of inhibitory circuit refinement. METHODS To achieve Fragile X mental retardation gene (Fmr1) deletion and re-expression in excitatory neurons during the postnatal day (P)14-P21 period, we generated CreCaMKIIa/Fmr1Flox/y (cOFF) and CreCaMKIIa/Fmr1FloxNeo/y (cON) mice, respectively. Cortical phenotypes were evaluated in adult mice using biochemical, cellular, clinically relevant electroencephalogram (EEG) and behavioral tests. RESULTS We found that similar to global Fmr1 KO mice, the density of PV-expressing cells, their activation, and sound-evoked gamma synchronization were impaired in cOFF mice, but the phenotypes were improved in cON mice. cOFF mice also showed enhanced cortical gelatinase activity and baseline EEG gamma power, which were reduced in cON mice. In addition, TrkB phosphorylation and PV levels were lower in cOFF mice, which also showed increased locomotor activity and anxiety-like behaviors. Remarkably, when FMRP levels were restored in only excitatory neurons during the P14-P21 period, TrkB phosphorylation and mouse behaviors were also improved. CONCLUSIONS These results indicate that postnatal deletion or re-expression of FMRP in excitatory neurons is sufficient to elicit or ameliorate structural and functional cortical deficits, and abnormal behaviors in mice, informing future studies about appropriate treatment windows and providing fundamental insights into the cellular mechanisms of cortical circuit dysfunction in FXS.
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Affiliation(s)
- Maham Rais
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA
| | - Jonathan W Lovelace
- Department of Psychology, University of California Riverside, Riverside, CA 92521, USA
| | - Xinghao S Shuai
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA
| | - Walker Woodard
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA
| | - Steven Bishay
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA
| | - Leo Estrada
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA
| | - Ashwin R Sharma
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA
| | - Austin Nguy
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA
| | - Anna Kulinich
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA
| | - Patricia S Pirbhoy
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA
| | - Arnold R Palacios
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA
| | | | - Khaleel A Razak
- Department of Psychology, University of California Riverside, Riverside, CA 92521, USA; Neuroscience Graduate Program, University of California Riverside, Riverside, CA 92521, USA
| | - Iryna M Ethell
- Division of Biomedical Sciences and Biomedical Sciences Graduate Program, School of Medicine, University of California Riverside, Riverside, CA 92521, USA; Neuroscience Graduate Program, University of California Riverside, Riverside, CA 92521, USA.
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20
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Reversing frontal disinhibition rescues behavioural deficits in models of CACNA1A-associated neurodevelopment disorders. Mol Psychiatry 2021; 26:7225-7246. [PMID: 34127816 DOI: 10.1038/s41380-021-01175-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Revised: 04/27/2021] [Accepted: 05/12/2021] [Indexed: 12/20/2022]
Abstract
CACNA1A deletions cause epilepsy, ataxia, and a range of neurocognitive deficits, including inattention, impulsivity, intellectual deficiency and autism. To investigate the underlying mechanisms, we generated mice carrying a targeted Cacna1a deletion restricted to parvalbumin-expressing (PV) neurons (PVCre;Cacna1ac/+) or to cortical pyramidal cells (PC) (Emx1Cre;Cacna1ac/+). GABA release from PV-expressing GABAergic interneurons (PV-INs) is reduced in PVCre;Cacna1ac/+ mutants, resulting in impulsivity, cognitive rigidity and inattention. By contrast, the deletion of Cacna1a in PCs does not impact cortical excitability or behaviour in Emx1Cre;Cacna1ac/+ mutants. A targeted Cacna1a deletion in the orbitofrontal cortex (OFC) results in reversal learning deficits while a medial prefrontal cortex (mPFC) deletion impairs selective attention. These deficits can be rescued by the selective chemogenetic activation of cortical PV-INs in the OFC or mPFC of PVCre;Cacna1ac/+ mutants. Thus, Cacna1a haploinsufficiency disrupts perisomatic inhibition in frontal cortical circuits, leading to a range of potentially reversible neurocognitive deficits.
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21
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Contractor A, Ethell IM, Portera-Cailliau C. Cortical interneurons in autism. Nat Neurosci 2021; 24:1648-1659. [PMID: 34848882 PMCID: PMC9798607 DOI: 10.1038/s41593-021-00967-6] [Citation(s) in RCA: 65] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Accepted: 09/21/2021] [Indexed: 01/01/2023]
Abstract
The mechanistic underpinnings of autism remain a subject of debate and controversy. Why do individuals with autism share an overlapping set of atypical behaviors and symptoms, despite having different genetic and environmental risk factors? A major challenge in developing new therapies for autism has been the inability to identify convergent neural phenotypes that could explain the common set of symptoms that result in the diagnosis. Although no striking macroscopic neuropathological changes have been identified in autism, there is growing evidence that inhibitory interneurons (INs) play an important role in its neural basis. In this Review, we evaluate and interpret this evidence, focusing on recent findings showing reduced density and activity of the parvalbumin class of INs. We discuss the need for additional studies that investigate how genes and the environment interact to change the developmental trajectory of INs, permanently altering their numbers, connectivity and circuit engagement.
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Affiliation(s)
- Anis Contractor
- Department of Neuroscience Feinberg School of Medicine, Weinberg College of Arts and Sciences, Northwestern University, Chicago, IL, USA
- Department of Neurobiology, Weinberg College of Arts and Sciences, Northwestern University, Chicago, IL, USA
| | - Iryna M Ethell
- Division of Biomedical Sciences, UC Riverside School of Medicine, Riverside, CA, USA
| | - Carlos Portera-Cailliau
- Department of Neurology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
- Department of Neurobiology, David Geffen School of Medicine at UCLA, Los Angeles, CA, USA.
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22
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Biney RP, Djankpa FT, Osei SA, Egbenya DL, Aboagye B, Karikari AA, Ussif A, Wiafe GA, Nuertey D. Effects of in utero exposure to monosodium glutamate on locomotion, anxiety, depression, memory and KCC2 expression in offspring. Int J Dev Neurosci 2021; 82:50-62. [PMID: 34755371 DOI: 10.1002/jdn.10158] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2021] [Revised: 09/16/2021] [Accepted: 11/02/2021] [Indexed: 11/11/2022] Open
Abstract
In pregnancy, there is a significant risk for developing embryos to be adversely affected by everyday chemicals such as food additives and environmental toxins. In recent times, several studies have documented the detrimental effect of exposure to such chemicals on the behaviour and neurodevelopment of the offspring. This study evaluated the influence of the food additive, monosodium glutamate (MSG), on behaviour and development in mice. Pregnant dams were exposed to MSG 2 or 4 g/kg or distilled water from gestation day 10-20. On delivery, postnatal day 1 (PN 1), 3 pups were sacrificed and whole brain samples assayed for KCC2 expression by western blot. The remaining pups were housed until PN 43 before commencing behavioural assessment. Their weights were measured at birth and at 3 days intervals until PN 42. The impact of prenatal exposure to MSG on baseline exploratory, anxiety and depression behaviours as well as spatial and working memory was assessed. In utero exposure to 4 g/kg MSG significantly reduced exploratory drive and increased depression-like behaviours but did not exert any significant impact on anxiety-like behaviours (p < 0.01). Additionally, there was a two-fold increase in KCC2 expression in both 2 and 4 g/kg MSG-exposed offspring. CONCLUSION: This study indicates that, in utero exposure to MSG increases the expression of KCC2 and causes significant effect on locomotion and depression-like behaviours but only marginally affects memory function.
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Affiliation(s)
| | - Francis Tanam Djankpa
- Department of Physiology, School of Medical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Silas Acheampong Osei
- School of Pharmacy and Pharmaceutical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Daniel Lawer Egbenya
- Department of Anatomy and Cell Biology, School of Medical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Benjamin Aboagye
- Department of Forensic Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Akua Afriyie Karikari
- School of Pharmacy and Pharmaceutical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Abdala Ussif
- Department of Forensic Sciences, University of Cape Coast, Cape Coast, Ghana
| | - Gideon Akuamoah Wiafe
- Department of Physiology, School of Medical Sciences, University of Cape Coast, Cape Coast, Ghana
| | - David Nuertey
- Department of Physiology, School of Medical Sciences, University of Cape Coast, Cape Coast, Ghana
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23
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Legault LM, Doiron K, Breton-Larrivée M, Langford-Avelar A, Lemieux A, Caron M, Jerome-Majewska LA, Sinnett D, McGraw S. Pre-implantation alcohol exposure induces lasting sex-specific DNA methylation programming errors in the developing forebrain. Clin Epigenetics 2021; 13:164. [PMID: 34425890 PMCID: PMC8381495 DOI: 10.1186/s13148-021-01151-0] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2021] [Accepted: 08/11/2021] [Indexed: 12/26/2022] Open
Abstract
Background Prenatal alcohol exposure is recognized for altering DNA methylation profiles of brain cells during development, and to be part of the molecular basis underpinning Fetal Alcohol Spectrum Disorder (FASD) etiology. However, we have negligible information on the effects of alcohol exposure during pre-implantation, the early embryonic window marked with dynamic DNA methylation reprogramming, and on how this may rewire the brain developmental program. Results Using a pre-clinical in vivo mouse model, we show that a binge-like alcohol exposure during pre-implantation at the 8-cell stage leads to surge in morphological brain defects and adverse developmental outcomes during fetal life. Genome-wide DNA methylation analyses of fetal forebrains uncovered sex-specific alterations, including partial loss of DNA methylation maintenance at imprinting control regions, and abnormal de novo DNA methylation profiles in various biological pathways (e.g., neural/brain development). Conclusion These findings support that alcohol-induced DNA methylation programming deviations during pre-implantation could contribute to the manifestation of neurodevelopmental phenotypes associated with FASD. Supplementary Information The online version contains supplementary material available at 10.1186/s13148-021-01151-0.
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Affiliation(s)
- L M Legault
- CHU Sainte-Justine Research Center, 3175 Chemin de La Côte-Sainte-Catherine, Montréal, QC, H3T 1C5, Canada.,Department of Biochemistry and Molecular Medicine, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, QC, H3T 1J4, Canada
| | - K Doiron
- CHU Sainte-Justine Research Center, 3175 Chemin de La Côte-Sainte-Catherine, Montréal, QC, H3T 1C5, Canada
| | - M Breton-Larrivée
- CHU Sainte-Justine Research Center, 3175 Chemin de La Côte-Sainte-Catherine, Montréal, QC, H3T 1C5, Canada.,Department of Biochemistry and Molecular Medicine, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, QC, H3T 1J4, Canada
| | - A Langford-Avelar
- CHU Sainte-Justine Research Center, 3175 Chemin de La Côte-Sainte-Catherine, Montréal, QC, H3T 1C5, Canada.,Department of Biochemistry and Molecular Medicine, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, QC, H3T 1J4, Canada
| | - A Lemieux
- CHU Sainte-Justine Research Center, 3175 Chemin de La Côte-Sainte-Catherine, Montréal, QC, H3T 1C5, Canada.,Department of Biochemistry and Molecular Medicine, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, QC, H3T 1J4, Canada
| | - M Caron
- CHU Sainte-Justine Research Center, 3175 Chemin de La Côte-Sainte-Catherine, Montréal, QC, H3T 1C5, Canada
| | - L A Jerome-Majewska
- McGill University Health Centre Glen Site, 1001 Boulevard Décarie, Montréal, QC, H4A 3J1, Canada.,Department of Pediatrics, McGill University, 1001 Boulevard Décarie, Montréal, QC, H4A 3J1, Canada
| | - D Sinnett
- CHU Sainte-Justine Research Center, 3175 Chemin de La Côte-Sainte-Catherine, Montréal, QC, H3T 1C5, Canada.,Department of Pediatrics, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, QC, H3T 1J4, Canada
| | - S McGraw
- CHU Sainte-Justine Research Center, 3175 Chemin de La Côte-Sainte-Catherine, Montréal, QC, H3T 1C5, Canada. .,Department of Biochemistry and Molecular Medicine, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, QC, H3T 1J4, Canada. .,Department of Obstetrics and Gynecology, Université de Montréal, 2900 Boulevard Edouard-Montpetit, Montréal, QC, H3T 1J4, Canada.
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24
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Mayerl S, Chen J, Salveridou E, Boelen A, Darras VM, Heuer H. Thyroid Hormone Transporter Deficiency in Mice Impacts Multiple Stages of GABAergic Interneuron Development. Cereb Cortex 2021; 32:329-341. [PMID: 34339499 PMCID: PMC8754375 DOI: 10.1093/cercor/bhab211] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2021] [Revised: 05/11/2021] [Accepted: 06/01/2021] [Indexed: 11/14/2022] Open
Abstract
Cortical interneuron neurogenesis is strictly regulated and depends on the presence of thyroid hormone (TH). In particular, inhibitory interneurons expressing the calcium binding protein Parvalbumin are highly sensitive toward developmental hypothyroidism. Reduced numbers of Parvalbumin-positive interneurons are observed in mice due to the combined absence of the TH transporters Mct8 and Oatp1c1. To unravel if cortical Parvalbumin-positive interneurons depend on cell-autonomous action of Mct8/Oatp1c1, we compared Mct8/Oatp1c1 double knockout (dko) mice to conditional knockouts with abolished TH transporter expression in progenitors of Parvalbumin-positive interneurons. These conditional knockouts exhibited a transient delay in the appearance of Parvalbumin-positive interneurons in the early postnatal somatosensory cortex while cell numbers remained permanently reduced in Mct8/Oatp1c1 dko mice. Using fluorescence in situ hybridization on E12.5 embryonic brains, we detected reduced expression of sonic hedgehog signaling components in Mct8/Oatp1c1 dko embryos only. Moreover, we revealed spatially distinct expression patterns of both TH transporters at brain barriers at E12.5 by immunofluorescence. At later developmental stages, we uncovered a sequential expression of first Oatp1c1 in individual interneurons and then Mct8 in Parvalbumin-positive subtypes. Together, our results point to multiple cell-autonomous and noncell-autonomous mechanisms that depend on proper TH transport during cortical interneuron development.
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Affiliation(s)
- Steffen Mayerl
- Leibniz Institute on Aging/Fritz Lipmann Institute, 07745 Jena, Germany.,MRC Centre for Regenerative Medicine, University of Edinburgh, Edinburgh EH16 4UU, UK.,Department of Endocrinology, Diabetes and Metabolism; University Duisburg-Essen, 45147 Essen, Germany
| | - Jiesi Chen
- Leibniz Institute on Aging/Fritz Lipmann Institute, 07745 Jena, Germany.,Leibniz Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Eva Salveridou
- Department of Endocrinology, Diabetes and Metabolism; University Duisburg-Essen, 45147 Essen, Germany.,Leibniz Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
| | - Anita Boelen
- Endocrinology Laboratory, Department of Clinical Chemistry, Amsterdam Gastroenterology & Metabolism, Amsterdam UMC, University of Amsterdam, 1105 AZ Amsterdam, the Netherlands
| | - Veerle M Darras
- Laboratory of Comparative Endocrinology, Animal Physiology and Neurobiology Section, Biology Department, Katholieke Universiteit Leuven, 3000 Leuven, Belgium
| | - Heike Heuer
- Leibniz Institute on Aging/Fritz Lipmann Institute, 07745 Jena, Germany.,Department of Endocrinology, Diabetes and Metabolism; University Duisburg-Essen, 45147 Essen, Germany.,Leibniz Research Institute for Environmental Medicine, 40225 Düsseldorf, Germany
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25
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Casanova MF, Shaban M, Ghazal M, El-Baz AS, Casanova EL, Sokhadze EM. Ringing Decay of Gamma Oscillations and Transcranial Magnetic Stimulation Therapy in Autism Spectrum Disorder. Appl Psychophysiol Biofeedback 2021; 46:161-173. [PMID: 33877491 DOI: 10.1007/s10484-021-09509-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Research suggest that in autism spectrum disorder (ASD) a disturbance in the coordinated interactions of neurons within local networks gives rise to abnormal patterns of brainwave activity in the gamma bandwidth. Low frequency transcranial magnetic stimulation (TMS) over the dorsolateral prefrontal cortex (DLPFC) has been proven to normalize gamma oscillation abnormalities, executive functions, and repetitive behaviors in high functioning ASD individuals. In this study, gamma frequency oscillations in response to a visual classification task (Kanizsa figures) were analyzed and compared in 19 ASD (ADI-R diagnosed, 14.2 ± 3.61 years old, 5 girls) and 19 (14.8 ± 3.67 years old, 5 girls) age/gender matched neurotypical individuals. The ASD group was treated with low frequency TMS (1.0 Hz, 90% motor threshold, 18 weekly sessions) targeting the DLPFC. In autistic subjects, as compared to neurotypicals, significant differences in event-related gamma oscillations were evident in amplitude (higher) pre-TMS. In addition, recordings after TMS treatment in our autistic subjects revealed a significant reduction in the time period to reach peak amplitude and an increase in the decay phase (settling time). The use of a novel metric for gamma oscillations. i.e., envelope analysis, and measurements of its ringing decay allowed us to characterize the impedance of the originating neuronal circuit. The ringing decay or dampening of gamma oscillations is dependent on the inhibitory tone generated by networks of interneurons. The results suggest that the ringing decay of gamma oscillations may provide a biomarker reflective of the excitatory/inhibitory balance of the cortex and a putative outcome measure for interventions in autism.
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Affiliation(s)
- Manuel F Casanova
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, 701 Grove Rd, Greenville, SC, 29605, USA
| | - Mohamed Shaban
- Electrical and Computer Engineering, University of South Alabama, Mobile, AL, USA
| | - Mohammed Ghazal
- Electrical and Computer Engineering Department, Abu Dhabi University, Abu Dhabi, United Arab Emirates
| | - Ayman S El-Baz
- Department of Bioengineering, Speed School of Engineering, University of Louisville, Louisville, KY, USA
| | - Emily L Casanova
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, 701 Grove Rd, Greenville, SC, 29605, USA
| | - Estate M Sokhadze
- Department of Biomedical Sciences, University of South Carolina School of Medicine Greenville, 701 Grove Rd, Greenville, SC, 29605, USA.
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26
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Pol-Fuster J, Cañellas F, Ruiz-Guerra L, Medina-Dols A, Bisbal-Carrió B, Asensio V, Ortega-Vila B, Marzese D, Vidal C, Santos C, Lladó J, Olmos G, Heine-Suñer D, Strauch K, Flaquer A, Vives-Bauzà C. Familial Psychosis Associated With a Missense Mutation at MACF1 Gene Combined With the Rare Duplications DUP3p26.3 and DUP16q23.3, Affecting the CNTN6 and CDH13 Genes. Front Genet 2021; 12:622886. [PMID: 33897758 PMCID: PMC8058362 DOI: 10.3389/fgene.2021.622886] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 03/15/2021] [Indexed: 12/30/2022] Open
Abstract
Psychosis is a highly heritable and heterogeneous psychiatric condition. Its genetic architecture is thought to be the result of the joint effect of common and rare variants. Families with high prevalence are an interesting approach to shed light on the rare variant's contribution without the need of collecting large cohorts. To unravel the genomic architecture of a family enriched for psychosis, with four affected individuals, we applied a system genomic approach based on karyotyping, genotyping by whole-exome sequencing to search for rare single nucleotide variants (SNVs) and SNP array to search for copy-number variants (CNVs). We identified a rare non-synonymous variant, g.39914279 C > G, in the MACF1 gene, segregating with psychosis. Rare variants in the MACF1 gene have been previously detected in SCZ patients. Besides, two rare CNVs, DUP3p26.3 and DUP16q23.3, were also identified in the family affecting relevant genes (CNTN6 and CDH13, respectively). We hypothesize that the co-segregation of these duplications with the rare variant g.39914279 C > G of MACF1 gene precipitated with schizophrenia and schizoaffective disorder.
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Affiliation(s)
- Josep Pol-Fuster
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Department of Biology, University of Balearic Islands (UIB) and Institut Universitari d'Investigacions en Ciències de la Salut, IUNICS, Palma, Spain
| | - Francesca Cañellas
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Psychiatry Service, University Hospital Son Espases (HUSE), Palma, Spain
| | - Laura Ruiz-Guerra
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Research Unit, HUSE, Palma, Spain
| | - Aina Medina-Dols
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Research Unit, HUSE, Palma, Spain
| | - Bàrbara Bisbal-Carrió
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Department of Biology, University of Balearic Islands (UIB) and Institut Universitari d'Investigacions en Ciències de la Salut, IUNICS, Palma, Spain
| | - Víctor Asensio
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Genomic Service Balearic Islands (GEN-IB), HUSE, Palma, Spain
| | - Bernat Ortega-Vila
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Genomic Service Balearic Islands (GEN-IB), HUSE, Palma, Spain
| | - Diego Marzese
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Research Unit, HUSE, Palma, Spain
| | - Carme Vidal
- Genomic Service Balearic Islands (GEN-IB), HUSE, Palma, Spain
| | - Carmen Santos
- Genomic Service Balearic Islands (GEN-IB), HUSE, Palma, Spain
| | - Jerònia Lladó
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Department of Biology, University of Balearic Islands (UIB) and Institut Universitari d'Investigacions en Ciències de la Salut, IUNICS, Palma, Spain
| | - Gabriel Olmos
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Department of Biology, University of Balearic Islands (UIB) and Institut Universitari d'Investigacions en Ciències de la Salut, IUNICS, Palma, Spain
| | - Damià Heine-Suñer
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Genomic Service Balearic Islands (GEN-IB), HUSE, Palma, Spain
| | - Konstantin Strauch
- Chair of Genetic Epidemiology, IBE, Faculty of Medicine, LMU Munich, Munich, Germany.,Institute of Genetic Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Antònia Flaquer
- Chair of Genetic Epidemiology, IBE, Faculty of Medicine, LMU Munich, Munich, Germany.,Institute of Genetic Epidemiology, Helmholtz Zentrum München-German Research Center for Environmental Health, Neuherberg, Germany
| | - Cristòfol Vives-Bauzà
- Health Research Institute of Balearic Islands (IdISBa), Palma, Spain.,Department of Biology, University of Balearic Islands (UIB) and Institut Universitari d'Investigacions en Ciències de la Salut, IUNICS, Palma, Spain.,Research Unit, HUSE, Palma, Spain
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27
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4E-BP2-dependent translation in parvalbumin neurons controls epileptic seizure threshold. Proc Natl Acad Sci U S A 2021; 118:2025522118. [PMID: 33876772 DOI: 10.1073/pnas.2025522118] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
The mechanistic/mammalian target of rapamycin complex 1 (mTORC1) integrates multiple signals to regulate critical cellular processes such as mRNA translation, lipid biogenesis, and autophagy. Germline and somatic mutations in mTOR and genes upstream of mTORC1, such as PTEN, TSC1/2, AKT3, PIK3CA, and components of GATOR1 and KICSTOR complexes, are associated with various epileptic disorders. Increased mTORC1 activity is linked to the pathophysiology of epilepsy in both humans and animal models, and mTORC1 inhibition suppresses epileptogenesis in humans with tuberous sclerosis and animal models with elevated mTORC1 activity. However, the role of mTORC1-dependent translation and the neuronal cell types mediating the effect of enhanced mTORC1 activity in seizures remain unknown. The eukaryotic translation initiation factor 4E-binding protein 1 (4E-BP1) and 2 (4E-BP2) are translational repressors downstream of mTORC1. Here we show that the ablation of 4E-BP2, but not 4E-BP1, in mice increases the sensitivity to pentylenetetrazole (PTZ)- and kainic acid (KA)-induced seizures. We demonstrate that the deletion of 4E-BP2 in inhibitory, but not excitatory neurons, causes an increase in the susceptibility to PTZ-induced seizures. Moreover, mice lacking 4E-BP2 in parvalbumin, but not somatostatin or VIP inhibitory neurons exhibit a lowered threshold for seizure induction and reduced number of parvalbumin neurons. A mouse model harboring a human PIK3CA mutation that enhances the activity of the PI3K-AKT pathway (Pik3ca H1047R-Pvalb ) selectively in parvalbumin neurons shows susceptibility to PTZ-induced seizures. Our data identify 4E-BP2 as a regulator of epileptogenesis and highlight the central role of increased mTORC1-dependent translation in parvalbumin neurons in the pathophysiology of epilepsy.
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28
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ACC Glu/GABA ratio is decreased in euthymic bipolar disorder I patients: possible in vivo neurometabolite explanation for mood stabilization. Eur Arch Psychiatry Clin Neurosci 2021; 271:537-547. [PMID: 31993746 DOI: 10.1007/s00406-020-01096-0] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/23/2019] [Accepted: 01/13/2020] [Indexed: 12/19/2022]
Abstract
Bipolar disorder (BD) is characterized by unstable mood states ranging from mania to depression. Although there is some evidence that mood instability may result from an imbalance between excitatory glutamatergic and inhibitory GABA-ergic neurotransmission, few proton magnetic resonance spectroscopy (1H-MRS) studies have measured these two neurometabolites simultaneously in BD. The enzyme glutamic acid decarboxylase (GAD1) catalyzes the decarboxylation of glutamate (Glu) to GABA, and its single nucleotide polymorphisms (SNPs) might influence Glu/GABA ratio. Thus, we investigated Glu/GABA ratio in the dorsal anterior cingulate cortex (dACC) of euthymic BD type I patients and healthy controls (HC), and assessed the influence of both mood stabilizers and GAD1 SNPs on this ratio. Eighty-eight subjects (50 euthymic BD type I patients and 38 HC) underwent 3T 1H-MRS in the dACC (2 × 2 × 4.5 cm3) using a two-dimensional JPRESS sequence and all subjects were genotyped for 4 SNPs in the GAD1 gene. BD patients had lower dACC Glu/GABA ratio compared to HC, where this was influenced by anticonvulsant and antipsychotic medications, but not lithium. The presence of GAD1 rs1978340 allele A was associated with higher Glu/GABA ratio in BD, while patients without this allele taking mood stabilizers had a lower Glu/GABA ratio. The lowering of dACC Glu/GABA could be one explanation for the mood stabilizing action of anticonvulsants and antipsychotics in BD type I euthymia. Therefore, this putative role of Glu/GABA ratio and the influence of GAD1 genotype interacting with mood stabilization medication should be confirmed by further studies involving larger samples and other mood states.ClincalTrials.gov registration: NCT01237158.
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29
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Rothenberg SE, Chen Q, Shen J, Nong Y, Nong H, Trinh EP, Biasini FJ, Liu J, Zeng X, Zou Y, Ouyang F, Korrick SA. Neurodevelopment correlates with gut microbiota in a cross-sectional analysis of children at 3 years of age in rural China. Sci Rep 2021; 11:7384. [PMID: 33795717 PMCID: PMC8016964 DOI: 10.1038/s41598-021-86761-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Accepted: 03/18/2021] [Indexed: 12/22/2022] Open
Abstract
We investigated cross-sectional associations between children's neurodevelopment and their gut microbiota composition. Study children (36 months of age) lived in rural China (n = 46). Neurodevelopment was assessed using the Bayley Scales of Infant Development, 2nd Edition, yielding the Mental Developmental Index (MDI) and Psychomotor Developmental Index (PDI). Children's gut microbiota was assessed using 16S rRNA gene profiling. Microbial diversity was characterized using alpha diversity patterns. Additionally, 3 coabundance factors were determined for the 25 most abundant taxa. Multivariable linear regression models were constructed to examine the relationships between Bayley scores (MDI and PDI) and children's gut microbiota. In adjusted models, MDI and PDI scores were not associated with alpha diversity indices. However, in adjusted models, MDI and PDI scores were positively associated with the first coabundance factor, which captured positive loadings for the genera Faecalibacterium, Sutterella, and Clostridium cluster XIVa. For an interquartile range increase in the first coabundance factor, MDI scores increased by 3.9 points [95% confidence interval (CI): 0, 7.7], while PDI scores increased by 8.6 points (95% CI 3.1, 14). Our results highlight the potential for gut microbial compositional characteristics to be important correlates of children's Bayley Scales performance at 36 months of age.
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Affiliation(s)
- Sarah E Rothenberg
- College of Public Health and Human Sciences, Oregon State University, 103 Milam Hall, Corvallis, OR, 97331, USA.
| | - Qiurong Chen
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai, China
| | - Jian Shen
- Key Laboratory of Systems Biomedicine (Ministry of Education), Shanghai Center for Systems Biomedicine, Shanghai Jiao Tong University, Shanghai, China
| | - Yanfen Nong
- Maternal and Child Health Hospital, Daxin County, China
| | - Hua Nong
- Maternal and Child Health Hospital, Daxin County, China
| | - Eva P Trinh
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
- Centers for Disease Control and Prevention, Atlanta, GA, USA
| | - Fred J Biasini
- Department of Psychology, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Jihong Liu
- Department of Epidemiology and Biostatistics, Arnold School of Public Health, University of South Carolina, Columbia, SC, USA
| | - Xiaoyun Zeng
- Department of Epidemiology and Statistics, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Yunfeng Zou
- Department of Toxicology, School of Public Health, Guangxi Medical University, Nanning, Guangxi, China
| | - Fengxiu Ouyang
- Ministry of Education and Shanghai Key Laboratory of Children's Environmental Health, Xinhua Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Susan A Korrick
- Channing Division of Network Medicine, Department of Medicine, Brigham and Women's Hospital and Harvard Medical School, Boston, MA, USA
- Department of Environmental Health, Harvard T.H. Chan School of Public Health, Boston, MA, USA
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30
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Shen L, Yuan F, Hong Y, Xu M, Hu Y, Liu Y. Identification of small molecules for accelerating the differentiation of GABA interneurons from human pluripotent stem cells. J Mol Cell Biol 2021; 12:245-248. [PMID: 31984421 PMCID: PMC7181716 DOI: 10.1093/jmcb/mjaa002] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2019] [Revised: 11/18/2019] [Accepted: 01/10/2020] [Indexed: 01/26/2023] Open
Affiliation(s)
- Luping Shen
- Institute for Stem Cell and Neural Regeneration, Key Laboratory of Targeted Intervention of Cardiovascular Disease, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Fang Yuan
- Institute for Stem Cell and Neural Regeneration, Key Laboratory of Targeted Intervention of Cardiovascular Disease, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Yuan Hong
- Institute for Stem Cell and Neural Regeneration, Key Laboratory of Targeted Intervention of Cardiovascular Disease, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Min Xu
- Institute for Stem Cell and Neural Regeneration, Key Laboratory of Targeted Intervention of Cardiovascular Disease, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China
| | - Yao Hu
- Institute for Stem Cell and Neural Regeneration, Key Laboratory of Targeted Intervention of Cardiovascular Disease, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China.,State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, China
| | - Yan Liu
- Institute for Stem Cell and Neural Regeneration, Key Laboratory of Targeted Intervention of Cardiovascular Disease, School of Pharmacy, Nanjing Medical University, Nanjing 211166, China.,State Key Laboratory of Reproductive Medicine, Nanjing Medical University, Nanjing 211166, China.,Co-innovation Center of Neuroregeneration, Nantong University, Nantong 226019, China
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31
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Kim KT, Kwak YJ, Han SC, Hwang JH. Impairment of motor coordination and interneuron migration in perinatal exposure to glufosinate-ammonium. Sci Rep 2020; 10:20647. [PMID: 33244012 PMCID: PMC7691990 DOI: 10.1038/s41598-020-76869-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2020] [Accepted: 08/03/2020] [Indexed: 11/09/2022] Open
Abstract
Glufosinate-ammonium (GLA) is a broad-spectrum herbicide for agricultural weed control and crop desiccation. Due to many GLA-resistant crops being developed to effectively control weeds and increase harvest yields, herbicide usage and the residual GLA in food has increased significantly. Though perinatal exposure by the residual GLA in food might affect brain development, the developmental neurotoxicity of GLA is still unclear. Therefore, this study aimed to investigate the effects of perinatal exposure to GLA on cortical development. The analysis revealed that perinatal GLA exposure altered behavioral changes in offspring, especially motor functional behavior. Moreover, perinatal GLA exposure affected cortical development, particularly by disrupting interneuron migration. These results provide new evidence that early life exposure to GLA alters cortical development.
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Affiliation(s)
- Kyung-Tai Kim
- Jeonbuk Branch Institute, Korea Institute of Toxicology, 30 Baekhak1-gil, Jeongeup, Jeollabuk-do, 56212, Republic of Korea
| | - Ye-Jung Kwak
- Jeonbuk Branch Institute, Korea Institute of Toxicology, 30 Baekhak1-gil, Jeongeup, Jeollabuk-do, 56212, Republic of Korea
| | - Su-Cheol Han
- Jeonbuk Branch Institute, Korea Institute of Toxicology, 30 Baekhak1-gil, Jeongeup, Jeollabuk-do, 56212, Republic of Korea.
| | - Jeong Ho Hwang
- Jeonbuk Branch Institute, Korea Institute of Toxicology, 30 Baekhak1-gil, Jeongeup, Jeollabuk-do, 56212, Republic of Korea.
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32
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Inglis GAS, Zhou Y, Patterson DG, Scharer CD, Han Y, Boss JM, Wen Z, Escayg A. Transcriptomic and epigenomic dynamics associated with development of human iPSC-derived GABAergic interneurons. Hum Mol Genet 2020; 29:2579-2595. [PMID: 32794569 PMCID: PMC7471504 DOI: 10.1093/hmg/ddaa150] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2020] [Revised: 06/09/2020] [Accepted: 07/11/2020] [Indexed: 12/13/2022] Open
Abstract
GABAergic interneurons (GINs) are a heterogeneous population of inhibitory neurons that collectively contribute to the maintenance of normal neuronal excitability and network activity. Identification of the genetic regulatory elements and transcription factors that contribute toward GIN function may provide new insight into the pathways underlying proper GIN activity while also indicating potential therapeutic targets for GIN-associated disorders, such as schizophrenia and epilepsy. In this study, we examined the temporal changes in gene expression and chromatin accessibility during GIN development by performing transcriptomic and epigenomic analyses on human induced pluripotent stem cell-derived neurons at 22, 50 and 78 days (D) post-differentiation. We observed 13 221 differentially accessible regions (DARs) of chromatin that associate with temporal changes in gene expression at D78 and D50, relative to D22. We also classified families of transcription factors that are increasingly enriched at DARs during differentiation, indicating regulatory networks that likely drive GIN development. Collectively, these data provide a resource for examining the molecular networks regulating GIN functionality.
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Affiliation(s)
- George Andrew S Inglis
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Ying Zhou
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA 30329, USA
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Dillon G Patterson
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Christopher D Scharer
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Yanfei Han
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA 30329, USA
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Jeremy M Boss
- Department of Microbiology and Immunology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Zhexing Wen
- Department of Psychiatry and Behavioral Sciences, Emory University School of Medicine, Atlanta, GA 30329, USA
- Department of Cell Biology, Emory University School of Medicine, Atlanta, GA 30322, USA
| | - Andrew Escayg
- Department of Human Genetics, Emory University School of Medicine, Atlanta, GA 30322, USA
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33
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Hahn A, Pensold D, Bayer C, Tittelmeier J, González-Bermúdez L, Marx-Blümel L, Linde J, Groß J, Salinas-Riester G, Lingner T, von Maltzahn J, Spehr M, Pieler T, Urbach A, Zimmer-Bensch G. DNA Methyltransferase 1 (DNMT1) Function Is Implicated in the Age-Related Loss of Cortical Interneurons. Front Cell Dev Biol 2020; 8:639. [PMID: 32793592 PMCID: PMC7387673 DOI: 10.3389/fcell.2020.00639] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 06/25/2020] [Indexed: 01/19/2023] Open
Abstract
Increased life expectancy in modern society comes at the cost of age-associated disabilities and diseases. Aged brains not only show reduced excitability and plasticity, but also a decline in inhibition. Age-associated defects in inhibitory circuits likely contribute to cognitive decline and age-related disorders. Molecular mechanisms that exert epigenetic control of gene expression contribute to age-associated neuronal impairments. Both DNA methylation, mediated by DNA methyltransferases (DNMTs), and histone modifications maintain neuronal function throughout lifespan. Here we provide evidence that DNMT1 function is implicated in the age-related loss of cortical inhibitory interneurons. Dnmt1 deletion in parvalbumin-positive interneurons attenuates their age-related decline in the cerebral cortex. Moreover, conditional Dnmt1-deficient mice show improved somatomotor performance and reduced aging-associated transcriptional changes. A decline in the proteostasis network, responsible for the proper degradation and removal of defective proteins, is implicated in age- and disease-related neurodegeneration. Our data suggest that DNMT1 acts indirectly on interneuron survival in aged mice by modulating the proteostasis network during life-time.
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Affiliation(s)
- Anne Hahn
- Department of Functional Epigenetics, Institute of Human Genetics, University Hospital Jena, Jena, Germany
| | - Daniel Pensold
- Department of Functional Epigenetics, Institute of Human Genetics, University Hospital Jena, Jena, Germany.,Department of Functional Epigenetics in the Animal Model, Institute of Biology II, RWTH Aachen University, Aachen, Germany
| | - Cathrin Bayer
- Department of Functional Epigenetics, Institute of Human Genetics, University Hospital Jena, Jena, Germany.,Department of Functional Epigenetics in the Animal Model, Institute of Biology II, RWTH Aachen University, Aachen, Germany
| | - Jessica Tittelmeier
- Department of Functional Epigenetics, Institute of Human Genetics, University Hospital Jena, Jena, Germany
| | - Lourdes González-Bermúdez
- Department of Functional Epigenetics, Institute of Human Genetics, University Hospital Jena, Jena, Germany
| | - Lisa Marx-Blümel
- Department of Functional Epigenetics, Institute of Human Genetics, University Hospital Jena, Jena, Germany
| | - Jenice Linde
- Department of Functional Epigenetics in the Animal Model, Institute of Biology II, RWTH Aachen University, Aachen, Germany.,Research Training Group 2416 MultiSenses - MultiScales, RWTH Aachen University, Aachen, Germany
| | - Jonas Groß
- Department of Functional Epigenetics, Institute of Human Genetics, University Hospital Jena, Jena, Germany
| | - Gabriela Salinas-Riester
- Transcriptome and Genome Analysis Laboratory (TAL), Department of Developmental Biochemistry, University of Göttingen, Göttingen, Germany
| | - Thomas Lingner
- Transcriptome and Genome Analysis Laboratory (TAL), Department of Developmental Biochemistry, University of Göttingen, Göttingen, Germany
| | - Julia von Maltzahn
- Leibniz Institute on Aging - Fritz Lipmann Institute (FLI), Jena, Germany
| | - Marc Spehr
- Research Training Group 2416 MultiSenses - MultiScales, RWTH Aachen University, Aachen, Germany.,Department of Chemosensation, Institute of Biology II, RWTH Aachen University, Aachen, Germany
| | - Tomas Pieler
- Centre for Nanoscale Microscopy and Molecular Physiology of the Brain (CNMPB), Department of Developmental Biochemistry, University of Göttingen, Göttingen, Germany
| | - Anja Urbach
- Institute of Neurology, University Hospital Jena, Jena, Germany
| | - Geraldine Zimmer-Bensch
- Department of Functional Epigenetics, Institute of Human Genetics, University Hospital Jena, Jena, Germany.,Department of Functional Epigenetics in the Animal Model, Institute of Biology II, RWTH Aachen University, Aachen, Germany.,Research Training Group 2416 MultiSenses - MultiScales, RWTH Aachen University, Aachen, Germany
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34
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Mancia Leon WR, Spatazza J, Rakela B, Chatterjee A, Pande V, Maniatis T, Hasenstaub AR, Stryker MP, Alvarez-Buylla A. Clustered gamma-protocadherins regulate cortical interneuron programmed cell death. eLife 2020; 9:e55374. [PMID: 32633719 PMCID: PMC7373431 DOI: 10.7554/elife.55374] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 07/06/2020] [Indexed: 01/19/2023] Open
Abstract
Cortical function critically depends on inhibitory/excitatory balance. Cortical inhibitory interneurons (cINs) are born in the ventral forebrain and migrate into cortex, where their numbers are adjusted by programmed cell death. Here, we show that loss of clustered gamma protocadherins (Pcdhg), but not of genes in the alpha or beta clusters, increased dramatically cIN BAX-dependent cell death in mice. Surprisingly, electrophysiological and morphological properties of Pcdhg-deficient and wild-type cINs during the period of cIN cell death were indistinguishable. Co-transplantation of wild-type with Pcdhg-deficient interneuron precursors further reduced mutant cIN survival, but the proportion of mutant and wild-type cells undergoing cell death was not affected by their density. Transplantation also allowed us to test for the contribution of Pcdhg isoforms to the regulation of cIN cell death. We conclude that Pcdhg, specifically Pcdhgc3, Pcdhgc4, and Pcdhgc5, play a critical role in regulating cIN survival during the endogenous period of programmed cIN death.
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Affiliation(s)
- Walter R Mancia Leon
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San FranciscoSan FranciscoUnited States
| | - Julien Spatazza
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San FranciscoSan FranciscoUnited States
| | - Benjamin Rakela
- Department of Physiology and Center for Integrative Neuroscience, University of California, San FranciscoSan FranciscoUnited States
| | - Ankita Chatterjee
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San FranciscoSan FranciscoUnited States
| | - Viraj Pande
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San FranciscoSan FranciscoUnited States
| | - Tom Maniatis
- Department of Biochemistry and Molecular Biophysics, Columbia UniversityNew YorkUnited States
| | - Andrea R Hasenstaub
- Department of Otolaryngology-Head and Neck Surgery, University of California, San FranciscoSan FranciscoUnited States
- Kavli Institute for Fundamental Neuroscience, University of California, San FranciscoSan FranciscoUnited States
| | - Michael P Stryker
- Department of Physiology and Center for Integrative Neuroscience, University of California, San FranciscoSan FranciscoUnited States
- Kavli Institute for Fundamental Neuroscience, University of California, San FranciscoSan FranciscoUnited States
| | - Arturo Alvarez-Buylla
- Department of Neurological Surgery and The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, University of California, San FranciscoSan FranciscoUnited States
- Kavli Institute for Fundamental Neuroscience, University of California, San FranciscoSan FranciscoUnited States
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35
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Donegan JJ, Boley AM, Glenn JP, Carless MA, Lodge DJ. Developmental alterations in the transcriptome of three distinct rodent models of schizophrenia. PLoS One 2020; 15:e0232200. [PMID: 32497066 PMCID: PMC7272013 DOI: 10.1371/journal.pone.0232200] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2020] [Accepted: 04/09/2020] [Indexed: 11/25/2022] Open
Abstract
Schizophrenia is a debilitating disorder affecting just under 1% of the population. While the symptoms of this disorder do not appear until late adolescence, pathological alterations likely occur earlier, during development in utero. While there is an increasing literature examining transcriptome alterations in patients, it is not possible to examine the changes in gene expression that occur during development in humans that will develop schizophrenia. Here we utilize three distinct rodent developmental disruption models of schizophrenia to examine potential overlapping alterations in the transcriptome, with a specific focus on markers of interneuron development. Specifically, we administered either methylazoxymethanol acetate (MAM), Polyinosinic:polycytidylic acid (Poly I:C), or chronic protein malnutrition, on GD 17 and examined mRNA expression in the developing hippocampus of the offspring 18 hours later. Here, we report alterations in gene expression that may contribute to the pathophysiology of schizophrenia, including significant alterations in interneuron development and ribosome function.
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Affiliation(s)
- Jennifer J. Donegan
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, United States of America
| | - Angela M. Boley
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, United States of America
| | - Jeremy P. Glenn
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, United States of America
| | - Melanie A. Carless
- Population Health Program, Texas Biomedical Research Institute, San Antonio, TX, United States of America
| | - Daniel J. Lodge
- Department of Pharmacology and Center for Biomedical Neuroscience, University of Texas Health Science Center, San Antonio, TX, United States of America
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36
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Casanova MF, Sokhadze EM, Casanova EL, Opris I, Abujadi C, Marcolin MA, Li X. Translational Neuroscience in Autism: From Neuropathology to Transcranial Magnetic Stimulation Therapies. Psychiatr Clin North Am 2020; 43:229-248. [PMID: 32439019 PMCID: PMC7245584 DOI: 10.1016/j.psc.2020.02.004] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
The presence of heterotopias, increased regional density of neurons at the gray-white matter junction, and focal cortical dysplasias all suggest an abnormality of neuronal migration in autism spectrum disorder (ASD). The abnormality is borne from a dissonance in timing between radial and tangentially migrating neuroblasts to the developing cortical plate. The uncoupling of excitatory and inhibitory cortical cells disturbs the coordinated interactions of neurons within local networks, thus providing abnormal patterns of brainwave activity in the gamma bandwidth. In ASD, gamma oscillation abnormalities and autonomic markers offer measures of therapeutic progress and help in the identification of subgroups.
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Affiliation(s)
- Manuel F Casanova
- Department of Pediatrics, Division of Developmental Behavioral Pediatrics, Greenville Health System, 200 Patewood Drive, Suite A200, Greenville, SC 29615, USA.
| | - Estate M Sokhadze
- University of South Carolina School of Medicine Greenville, 200 Patewood Drive, Greenville, SC 29615, USA
| | - Emily L Casanova
- University of South Carolina School of Medicine Greenville, 200 Patewood Drive, Greenville, SC 29615, USA. https://twitter.com/EmLyWill
| | - Ioan Opris
- University of Miami, Miller School of Medicine, Department Miami Project to Cure Paralysis, Miami, FL 33136, USA
| | - Caio Abujadi
- Department of Psychiatry, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Marco Antonio Marcolin
- Department of Neurology, Faculty of Medicine, University of São Paulo, São Paulo, Brazil
| | - Xiaoli Li
- State Key Laboratory of Cognitive Neuroscience and Learning & IDG/McGovern Institute for Brain Research, Beijing Normal University, Beijing, China
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37
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D'Adamo MC, Liantonio A, Conte E, Pessia M, Imbrici P. Ion Channels Involvement in Neurodevelopmental Disorders. Neuroscience 2020; 440:337-359. [PMID: 32473276 DOI: 10.1016/j.neuroscience.2020.05.032] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2020] [Revised: 05/16/2020] [Accepted: 05/19/2020] [Indexed: 12/14/2022]
Abstract
Inherited and sporadic mutations in genes encoding for brain ion channels, affecting membrane expression or biophysical properties, have been associated with neurodevelopmental disorders characterized by epilepsy, cognitive and behavioral deficits with significant phenotypic and genetic heterogeneity. Over the years, the screening of a growing number of patients and the functional characterization of newly identified mutations in ion channels genes allowed to recognize new phenotypes and to widen the clinical spectrum of known diseases. Furthermore, advancements in understanding disease pathogenesis at atomic level or using patient-derived iPSCs and animal models have been pivotal to orient therapeutic intervention and to put the basis for the development of novel pharmacological options for drug-resistant disorders. In this review we will discuss major improvements and critical issues concerning neurodevelopmental disorders caused by dysfunctions in brain sodium, potassium, calcium, chloride and ligand-gated ion channels.
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Affiliation(s)
- Maria Cristina D'Adamo
- Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, University of Malta, Malta
| | | | - Elena Conte
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", Italy
| | - Mauro Pessia
- Department of Physiology and Biochemistry, Faculty of Medicine and Surgery, University of Malta, Malta; Department of Physiology, College of Medicine and Health Sciences, United Arab Emirates University, Al Ain, United Arab Emirates
| | - Paola Imbrici
- Department of Pharmacy-Drug Sciences, University of Bari "Aldo Moro", Italy.
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Symmank J, Bayer C, Reichard J, Pensold D, Zimmer-Bensch G. Neuronal Lhx1 expression is regulated by DNMT1-dependent modulation of histone marks. Epigenetics 2020; 15:1259-1274. [PMID: 32441560 PMCID: PMC7595593 DOI: 10.1080/15592294.2020.1767372] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023] Open
Abstract
Apart from the conventional view of repressive promoter methylation, the DNA methyltransferase 1 (DNMT1) was recently described to modulate gene expression through a variety of interactions with diverse epigenetic key players. We here investigated the DNMT1-dependent transcriptional control of the homeobox transcription factor LHX1, which we previously identified as an important regulator in cortical interneuron development. We found that LHX1 expression in embryonic interneurons originating in the embryonic pre-optic area (POA) is regulated by non-canonic DNMT1 function. Analysis of histone methylation and acetylation revealed that both epigenetic modifications seem to be implicated in the control of Lhx1 gene activity and that DNMT1 contributes to their proper establishment. This study sheds further light on the regulatory network of cortical interneuron development including the complex interplay of epigenetic mechanisms.
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Affiliation(s)
- Judit Symmank
- Institute for Human Genetics, Am Klinikum 1, University Hospital Jena , Jena, Germany.,Polyclinic for Orthodontics, Leutragraben 3, University Hospital Jena , Jena, Germany
| | - Cathrin Bayer
- Institute for Human Genetics, Am Klinikum 1, University Hospital Jena , Jena, Germany.,Department of Functional Epigenetics in the Animal Model, Institute for Biology II, Worringerweg 3, RWTH Aachen University , Aachen, Germany
| | - Julia Reichard
- Institute for Human Genetics, Am Klinikum 1, University Hospital Jena , Jena, Germany.,Department of Functional Epigenetics in the Animal Model, Institute for Biology II, Worringerweg 3, RWTH Aachen University , Aachen, Germany.,Research Training Group 2416 MultiSenses, MultiScales, RWTH Aachen University , Aachen, Germany
| | - Daniel Pensold
- Institute for Human Genetics, Am Klinikum 1, University Hospital Jena , Jena, Germany.,Department of Functional Epigenetics in the Animal Model, Institute for Biology II, Worringerweg 3, RWTH Aachen University , Aachen, Germany
| | - Geraldine Zimmer-Bensch
- Institute for Human Genetics, Am Klinikum 1, University Hospital Jena , Jena, Germany.,Polyclinic for Orthodontics, Leutragraben 3, University Hospital Jena , Jena, Germany.,Department of Functional Epigenetics in the Animal Model, Institute for Biology II, Worringerweg 3, RWTH Aachen University , Aachen, Germany
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Symmank J, Gölling V, Gerstmann K, Zimmer G. The Transcription Factor LHX1 Regulates the Survival and Directed Migration of POA-derived Cortical Interneurons. Cereb Cortex 2020; 29:1644-1658. [PMID: 29912395 DOI: 10.1093/cercor/bhy063] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2018] [Revised: 02/22/2018] [Accepted: 02/23/2018] [Indexed: 12/17/2022] Open
Abstract
The delicate balance of excitation and inhibition is crucial for proper function of the cerebral cortex, relying on the accurate number and subtype composition of inhibitory gamma-aminobutyric (GABA)-expressing interneurons. Various intrinsic and extrinsic factors precisely orchestrate their multifaceted development including the long-range migration from the basal telencephalon to cortical targets as well as interneuron survival throughout the developmental period. Particularly expressed guidance receptors were described to channel the migration of cortical interneurons deriving from the medial ganglionic eminence (MGE) and the preoptic area (POA) along distinct routes. Hence, unveiling the regulatory genetic networks controlling subtype-specific gene expression profiles is key to understand interneuron-specific developmental programs and to reveal causes for associated disorders. In contrast to MGE-derived interneurons, little is known about the transcriptional networks in interneurons born in the POA. Here, we provide first evidence for the LIM-homeobox transcription factor LHX1 as a crucial key player in the post-mitotic development of POA-derived cortical interneurons. By transcriptional regulation of related genes, LHX1 modulates their survival as well as the subtype-specific expression of guidance receptors of the Eph/ephrin family, thereby affecting directional migration and layer distribution in the adult cortex.
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Affiliation(s)
- Judit Symmank
- Institute of Human Genetics, University Hospital Jena, Jena, Germany
| | - Vanessa Gölling
- Institute of Human Genetics, University Hospital Jena, Jena, Germany
| | - Katrin Gerstmann
- Institute of Human Genetics, University Hospital Jena, Jena, Germany
| | - Geraldine Zimmer
- Institute of Human Genetics, University Hospital Jena, Jena, Germany
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40
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Vucic S, Higashihara M, Sobue G, Atsuta N, Doi Y, Kuwabara S, Kim SH, Kim I, Oh KW, Park J, Kim EM, Talman P, Menon P, Kiernan MC. ALS is a multistep process in South Korean, Japanese, and Australian patients. Neurology 2020; 94:e1657-e1663. [PMID: 32071166 PMCID: PMC7251515 DOI: 10.1212/wnl.0000000000009015] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2019] [Accepted: 11/08/2019] [Indexed: 12/19/2022] Open
Abstract
OBJECTIVE To establish whether amyotrophic lateral sclerosis (ALS) is a multistep process in South Korean and Japanese populations when compared to Australian cohorts. METHODS We generated incident data by age and sex for Japanese (collected between April 2009 and March 2010) and South Korean patients with ALS (collected between January 2011 and December 2015). Mortality rates were provided for Australian patients with ALS (collected between 2007 and 2016). We regressed the log of age-specific incidence against the log of age with least squares regression for each ALS population. RESULTS We identified 11,834 cases of ALS from the 3 populations, including 6,524 Australian, 2,264 Japanese, and 3,049 South Korean ALS cases. We established a linear relation between the log incidence and log age in the 3 populations: Australia r 2 = 0.99, Japan r 2 = 0.99, South Korea r 2 = 0.99. The estimate slopes were similar across the 3 populations, being 5.4 (95% confidence interval [CI], 4.8-5.5) in Japanese, 5.4 (95% CI, 5.2-5.7) in Australian, and 4.4 (95% CI, 4.2-4.8) in South Korean patients. CONCLUSIONS The linear relationship between log age and log incidence is consistent with a multistage model of disease, with slope estimated suggesting that 6 steps were required in Japanese and Australian patients with ALS while 5 steps were needed in South Korean patients. Identification of these steps could identify novel therapeutic strategies.
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Affiliation(s)
- Steve Vucic
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia.
| | - Mana Higashihara
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Gen Sobue
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Naoki Atsuta
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Yuriko Doi
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Satoshi Kuwabara
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Seung Hyun Kim
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Inah Kim
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Ki-Wook Oh
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Jinseok Park
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Eun Mi Kim
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Paul Talman
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Parvathi Menon
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
| | - Matthew C Kiernan
- From the Westmead Clinical School (S.V., M.H., P.M.), University of Sydney, Australia; Department of Neurology (N.A.), Nagoya University Graduate School of Medicine (G.S.); The National Institute of Public Health (Y.D.), Wako-shi; Chiba University Graduate School of Medicine (S.K.), Japan; Department of Neurology (S.H.K., K.-W.O., J.P.), Hanyang University Hospital; Department of Health Sciences (I.K., E.M.K.), Hanyang University Graduate School; Department of Occupational and Environmental Medicine (I.K.), College of Medicine, Hanyang University, Seoul, Republic of Korea; Geelong Hospital (P.T.); and Brain and Mind Centre (M.C.K.), University of Sydney and Institute of Clinical Neurosciences, Royal Prince Alfred Hospital, Sydney, Australia
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Altered Expression of GABAergic Markers in the Forebrain of Young and Adult Engrailed-2 Knockout Mice. Genes (Basel) 2020; 11:genes11040384. [PMID: 32244845 PMCID: PMC7231099 DOI: 10.3390/genes11040384] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2020] [Revised: 03/25/2020] [Accepted: 03/30/2020] [Indexed: 12/23/2022] Open
Abstract
Impaired function of GABAergic interneurons, and the subsequent alteration of excitation/inhibition balance, is thought to contribute to autism spectrum disorders (ASD). Altered numbers of GABAergic interneurons and reduced expression of GABA receptors has been detected in the brain of ASD subjects and mouse models of ASD. We previously showed a reduced expression of GABAergic interneuron markers parvalbumin (PV) and somatostatin (SST) in the forebrain of adult mice lacking the Engrailed2 gene (En2-/- mice). Here, we extended this analysis to postnatal day (P) 30 by using in situ hybridization, immunohistochemistry, and quantitative RT-PCR to study the expression of GABAergic interneuron markers in the hippocampus and somatosensory cortex of En2-/- and wild type (WT) mice. In addition, GABA receptor subunit mRNA expression was investigated by quantitative RT-PCR in the same brain regions of P30 and adult En2-/- and WT mice. As observed in adult animals, PV and SST expression was decreased in En2-/- forebrain of P30 mice. The expression of GABA receptor subunits (including the ASD-relevant Gabrb3) was also altered in young and adult En2-/- forebrain. Our results suggest that GABAergic neurotransmission deficits are already evident at P30, confirming that neurodevelopmental defects of GABAergic interneurons occur in the En2 mouse model of ASD.
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Formation of dorsal-ventral axis of the pallium derived from mouse embryonic stem cells. Biochem Biophys Res Commun 2020; 524:117-122. [PMID: 31980168 DOI: 10.1016/j.bbrc.2020.01.070] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2019] [Accepted: 01/14/2020] [Indexed: 01/14/2023]
Abstract
The telencephalon is one of the most-elaborated tissues. A broad variety of cell types is produced by spatiotemporally regulated mechanisms and is involved, in different combinations, in subregional formation. The dorsal half of the telencephalon, the pallium or cerebral cortex, is subdivided along the dorsal-ventral (D-V) axis into the medial, dorsal, lateral, and ventral pallium (MP, DP, LP and VP, respectively). An in vitro differentiation system has been achieved using mouse embryonic stem cells, and major telencephalic neurons can be obtained in this way; however, in using the in vitro differentiation system, many telencephalic neuron subtypes remain undifferentiated, although some of them are related to neuronal diseases. In the current study, we found that inhibiting the TGFbeta signal was efficient for neural induction. A continuous arrangement of Emx1+/Pax6-, Emx1+/Pax6+, and Emx1-/Pax6+ cells was achieved in Foxg1+ neuroepithelia, corresponding approximately to cortical progenitors derived from MP, DP/LP, and VP, respectively. A small portion of Dbx1+ cells resided in the VP fraction. These findings suggested that the D-V axis of the pallium was recapitulated in the in vitro-derived pallium.
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Kiernan MC, Ziemann U, Eisen A. Amyotrophic lateral sclerosis: Origins traced to impaired balance between neural excitation and inhibition in the neonatal period. Muscle Nerve 2019; 60:232-235. [PMID: 31233613 DOI: 10.1002/mus.26617] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2019] [Revised: 06/17/2019] [Accepted: 06/18/2019] [Indexed: 12/14/2022]
Abstract
Amyotrophic lateral sclerosis (ALS) is an adult onset disease but with an increasingly recognized preclinical prodrome. A wide spectrum of investigative approaches has identified loss of inhibitory function at the heart of ALS. In developing an explanation for the onset of ALS, it remains a consideration that ALS has its origins in neonatal derangement of the γ-aminobutyric acid (GABA)-ergic system, with delayed conversion from excitatory to mature inhibitory GABA and impaired excitation/inhibition balance. If this is so, the resulting chronic excitotoxicity could marginalize cortical network functioning very early in life, laying the path for neurodegeneration. The possibility that adult-onset neurodegenerative conditions might have their roots in early developmental derangements is worthy of consideration, particularly in relation to current models of disease pathogenesis. Unraveling the very early molecular events will be crucial in developing a better understanding of ALS and other adult neurodegenerative disorders. Muscle Nerve, 2019.
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Affiliation(s)
- Matthew C Kiernan
- The University of Sydney School of Medicine Brain and Mind Centre, Building F, Level 4, 94 Mallett Street, Camperdown, New South Wales, 2050, Australia
- Department of Neurology, Royal Prince Alfred Hospital, Sydney, Australia
| | - Ulf Ziemann
- Department of Neurology & Stroke, and Hertie-Institute for clinical brain research, University of Tübingen, Tübingen, Germany
| | - Andrew Eisen
- Division of Neurology (Emeritus), Department of Medicine, University of British Columbia, Vancouver, British Columbia, Canada
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Jiang X, Lupien-Meilleur A, Tazerart S, Lachance M, Samarova E, Araya R, Lacaille JC, Rossignol E. Remodeled cortical inhibition prevents motor seizures in generalized epilepsy. Ann Neurol 2019; 84:436-451. [PMID: 30048010 DOI: 10.1002/ana.25301] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2018] [Revised: 06/12/2018] [Accepted: 07/21/2018] [Indexed: 12/12/2022]
Abstract
OBJECTIVE Deletions of CACNA1A, encoding the α1 subunit of CaV 2.1 channels, cause epilepsy with ataxia in humans. Whereas the deletion of Cacna1a in γ-aminobutyric acidergic (GABAergic) interneurons (INs) derived from the medial ganglionic eminence (MGE) impairs cortical inhibition and causes generalized seizures in Nkx2.1Cre ;Cacna1ac/c mice, the targeted deletion of Cacna1a in somatostatin-expressing INs (SOM-INs), a subset of MGE-derived INs, does not result in seizures, indicating a crucial role of parvalbumin-expressing (PV) INs. Here we identify the cellular and network consequences of Cacna1a deletion specifically in PV-INs. METHODS We generated PVCre ;Cacna1ac/c mutant mice carrying a conditional Cacna1a deletion in PV neurons and evaluated the cortical cellular and network outcomes of this mutation by combining immunohistochemical assays, in vitro electrophysiology, 2-photon imaging, and in vivo video-electroencephalographic recordings. RESULTS PVCre ;Cacna1ac/c mice display reduced cortical perisomatic inhibition and frequent absences but only rare motor seizures. Compared to Nkx2.1Cre ;Cacna1ac/c mice, PVCre ;Cacna1ac/c mice have a net increase in cortical inhibition, with a gain of dendritic inhibition through sprouting of SOM-IN axons, largely preventing motor seizures. This beneficial compensatory remodeling of cortical GABAergic innervation is mTORC1-dependent and its inhibition with rapamycin leads to a striking increase in motor seizures. Furthermore, we show that a direct chemogenic activation of cortical SOM-INs prevents motor seizures in a model of kainate-induced seizures. INTERPRETATION Our findings provide novel evidence suggesting that the remodeling of cortical inhibition, with an mTOR-dependent gain of dendritic inhibition, determines the seizure phenotype in generalized epilepsy and that mTOR inhibition can be detrimental in epilepsies not primarily due to mTOR hyperactivation. Ann Neurol 2018;84:436-451.
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Affiliation(s)
- Xiao Jiang
- Sainte-Justine University Hospital Research Center.,Department of Neurosciences and the Central Nervous System Research Group, University of Montreal, Montreal, Quebec, Canada
| | | | - Sabrina Tazerart
- Department of Neurosciences and the Central Nervous System Research Group, University of Montreal, Montreal, Quebec, Canada
| | | | - Elena Samarova
- Sainte-Justine University Hospital Research Center.,Department of Neurosciences and the Central Nervous System Research Group, University of Montreal, Montreal, Quebec, Canada
| | - Roberto Araya
- Department of Neurosciences and the Central Nervous System Research Group, University of Montreal, Montreal, Quebec, Canada
| | - Jean-Claude Lacaille
- Department of Neurosciences and the Central Nervous System Research Group, University of Montreal, Montreal, Quebec, Canada
| | - Elsa Rossignol
- Sainte-Justine University Hospital Research Center.,Department of Neurosciences and the Central Nervous System Research Group, University of Montreal, Montreal, Quebec, Canada
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Gigase FAJ, Snijders GJLJ, Boks MP, de Witte LD. Neurons and glial cells in bipolar disorder: A systematic review of postmortem brain studies of cell number and size. Neurosci Biobehav Rev 2019; 103:150-162. [PMID: 31163205 DOI: 10.1016/j.neubiorev.2019.05.027] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Revised: 05/31/2019] [Accepted: 05/31/2019] [Indexed: 02/07/2023]
Abstract
Bipolar disorder (BD) is a complex neurobiological disease. It is likely that both neurons and glial cells are affected in BD, yet how these cell types are changed at the structural and functional level is still largely unknown. In this review we provide an overview of postmortem studies analyzing structural cellular changes in BD, including the density, number and size of neurons and glia. We categorize the results per cell-type and validate outcome measures per brain region. Despite variations by brain region, outcome measure and methodology, several patterns could be identified. Total neuron, total glia, and cell subtypes astrocyte, microglia and oligodendrocyte presence appears unchanged in the BD brain. Interneuron density may be decreased across various cortical areas, yet findings of interneuron subpopulations show discrepancies. This structural review brings to light issues in validation and replication. Future research should therefore prioritize the validation of existing studies in order to increasingly refine the conceptual models of BD.
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Affiliation(s)
- Frederieke A J Gigase
- Department of Psychiatry, Brain Center, University Medical Center Utrecht, Utrecht University (BCRM-UMCU-UU), 3584 CG Utrecht, the Netherlands
| | - Gijsje J L J Snijders
- Department of Psychiatry, Brain Center, University Medical Center Utrecht, Utrecht University (BCRM-UMCU-UU), 3584 CG Utrecht, the Netherlands
| | - Marco P Boks
- Department of Psychiatry, Brain Center, University Medical Center Utrecht, Utrecht University (BCRM-UMCU-UU), 3584 CG Utrecht, the Netherlands
| | - Lot D de Witte
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, NY, USA; Mental Illness Research, Education and Clinical Center (MIRECC), James J Peters VA Medical Center, Bronx, NY, USA.
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Palagina G, Meyer JF, Smirnakis SM. Inhibitory Units: An Organizing Nidus for Feature-Selective SubNetworks in Area V1. J Neurosci 2019; 39:4931-4944. [PMID: 30979814 PMCID: PMC6670246 DOI: 10.1523/jneurosci.2275-18.2019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 03/28/2019] [Accepted: 04/01/2019] [Indexed: 01/05/2023] Open
Abstract
Neuronal circuits often display small-world network architecture characterized by neuronal cliques of dense local connectivity communicating with each other through a limited number of cells that participate in multiple cliques. The principles by which such cliques organize to encode information remain poorly understood. Similarly tuned pyramidal cells that preferentially target each other may form multicellular encoding units performing distinct computational tasks. The existence of such units can reflect upon both spontaneous and stimulus-driven population events.We applied two-photon calcium imaging to study spontaneous population bursts in layer 2/3 of area V1 in male C57BL/6 mice. To identify potential small-world cliques, we searched for pyramidal cells whose calcium events had a consistent temporal relationship with the events of local inhibitory interneurons. This was guided by the intuition that groups of neurons whose synchronous firing represents a temporally coherent computational unit should be inhibited together. Pyramidal members of these interneuron-centered clusters on average displayed stronger functional connectivity between each other than with nonmember pyramidal neurons. The structure of the clusters evolved during postnatal development: cluster size and overlap between clusters decreased with developmental maturation. Pyramidal neurons in a cluster showed higher than chance tuning function similarity between each other and with the linked interneuron. Thus, spontaneous population events in V1 are shaped by small-world subnetworks of pyramidal neurons that share functional properties and work as a coherent unit with a local interneuron. These interneuron-pyramidal cell partnerships may represent a fundamental neocortical unit of computation at the population level.SIGNIFICANCE STATEMENT Neuronal circuit in layer 2/3 of mouse area V1 possesses small-world network architecture, where cliques of densely interconnected neurons ("small worlds") communicate via restricted number of hub cells. We show that: (1) in mouse V1 individual small-world cliques preferably incorporate pyramidal neurons with similar visual feature tuning, and (2) ongoing population activity of such pyramidal neuron clique is temporally linked to the activity of the local interneuron sharing its feature tuning with the clique members. Functional grouping of similarly tuned interneurons and pyramidal cells into cliques may ensure that ensembles of functionally alike pyramidal cells recruited during perceptual tasks and spontaneous activity are also turned off together as a unit, with interneurons serving as organizers of linked pyramidal ensemble activity.
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Affiliation(s)
- Ganna Palagina
- Department of Neurology, Brigham and Women's Hospital, Harvard Medical School Boston, Massachusetts 02115,
- Jamaica Plain Veterans Administration Hospital, Boston, Massachusetts 02130, and
| | | | - Stelios M Smirnakis
- Department of Neurology, Brigham and Women's Hospital, Harvard Medical School Boston, Massachusetts 02115
- Jamaica Plain Veterans Administration Hospital, Boston, Massachusetts 02130, and
- Baylor College of Medicine, Houston, Texas 77030
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Di Nardo AA, Fuchs J, Joshi RL, Moya KL, Prochiantz A. The Physiology of Homeoprotein Transduction. Physiol Rev 2019; 98:1943-1982. [PMID: 30067157 DOI: 10.1152/physrev.00018.2017] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
The homeoprotein family comprises ~300 transcription factors and was long seen as primarily involved in developmental programs through cell autonomous regulation. However, recent evidence reveals that many of these factors are also expressed in the adult where they exert physiological functions not yet fully deciphered. Furthermore, the DNA-binding domain of most homeoproteins contains two signal sequences allowing their secretion and internalization, thus intercellular transfer. This review focuses on this new-found signaling in cell migration, axon guidance, and cerebral cortex physiological homeostasis and speculates on how it may play important roles in early arealization of the neuroepithelium. It also describes the use of homeoproteins as therapeutic proteins in mouse models of diseases affecting the central nervous system, in particular Parkinson disease and glaucoma.
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Affiliation(s)
- Ariel A Di Nardo
- Centre for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS UMR 7241, INSERM U1050, Labex MemoLife, PSL Research University , Paris , France
| | - Julia Fuchs
- Centre for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS UMR 7241, INSERM U1050, Labex MemoLife, PSL Research University , Paris , France
| | - Rajiv L Joshi
- Centre for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS UMR 7241, INSERM U1050, Labex MemoLife, PSL Research University , Paris , France
| | - Kenneth L Moya
- Centre for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS UMR 7241, INSERM U1050, Labex MemoLife, PSL Research University , Paris , France
| | - Alain Prochiantz
- Centre for Interdisciplinary Research in Biology (CIRB), Collège de France, CNRS UMR 7241, INSERM U1050, Labex MemoLife, PSL Research University , Paris , France
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Eid L, Raju PK, Rossignol E. PHACTRing in actin: actin deregulation in genetic epilepsies. Brain 2018; 141:3084-3088. [PMID: 30364981 DOI: 10.1093/brain/awy272] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Affiliation(s)
- Lara Eid
- CHU Sainte-Justine Research Center, Montreal, Canada.,Department of Neurosciences, University of Montreal, Montreal, Canada
| | - Praveen K Raju
- CHU Sainte-Justine Research Center, Montreal, Canada.,Department of Neurosciences, University of Montreal, Montreal, Canada
| | - Elsa Rossignol
- CHU Sainte-Justine Research Center, Montreal, Canada.,Department of Neurosciences, University of Montreal, Montreal, Canada.,Department of Pediatrics, University of Montreal, Montreal, Canada
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Voltage-Dependent Calcium Channels, Calcium Binding Proteins, and Their Interaction in the Pathological Process of Epilepsy. Int J Mol Sci 2018; 19:ijms19092735. [PMID: 30213136 PMCID: PMC6164075 DOI: 10.3390/ijms19092735] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2018] [Revised: 09/06/2018] [Accepted: 09/07/2018] [Indexed: 01/08/2023] Open
Abstract
As an important second messenger, the calcium ion (Ca2+) plays a vital role in normal brain function and in the pathophysiological process of different neurodegenerative diseases including Alzheimer’s disease (AD), Parkinson’s disease (PD), and epilepsy. Ca2+ takes part in the regulation of neuronal excitability, and the imbalance of intracellular Ca2+ is a trigger factor for the occurrence of epilepsy. Several anti-epileptic drugs target voltage-dependent calcium channels (VDCCs). Intracellular Ca2+ levels are mainly controlled by VDCCs located in the plasma membrane, the calcium-binding proteins (CBPs) inside the cytoplasm, calcium channels located on the intracellular calcium store (particular the endoplasmic reticulum/sarcoplasmic reticulum), and the Ca2+-pumps located in the plasma membrane and intracellular calcium store. So far, while many studies have established the relationship between calcium control factors and epilepsy, the mechanism of various Ca2+ regulatory factors in epileptogenesis is still unknown. In this paper, we reviewed the function, distribution, and alteration of VDCCs and CBPs in the central nervous system in the pathological process of epilepsy. The interaction of VDCCs with CBPs in the pathological process of epilepsy was also summarized. We hope this review can provide some clues for better understanding the mechanism of epileptogenesis, and for the development of new anti-epileptic drugs targeting on VDCCs and CBPs.
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Symmank J, Bayer C, Schmidt C, Hahn A, Pensold D, Zimmer-Bensch G. DNMT1 modulates interneuron morphology by regulating Pak6 expression through crosstalk with histone modifications. Epigenetics 2018; 13:536-556. [PMID: 29912614 DOI: 10.1080/15592294.2018.1475980] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Epigenetic mechanisms of gene regulation, including DNA methylation and histone modifications, call increasing attention in the context of development and human health. Thereby, interactions between DNA methylating enzymes and histone modifications tremendously multiply the spectrum of potential regulatory functions. Epigenetic networks are critically involved in the establishment and functionality of neuronal circuits that are composed of gamma-aminobutyric acid (GABA)-positive inhibitory interneurons and excitatory principal neurons in the cerebral cortex. We recently reported a crucial role of the DNA methyltransferase 1 (DNMT1) during the migration of immature POA-derived cortical interneurons by promoting the migratory morphology through repression of Pak6. However, the DNMT1-dependent regulation of Pak6 expression appeared to occur independently of direct DNA methylation. Here, we show that in addition to its DNA methylating activity, DNMT1 can act on gene transcription by modulating permissive H3K4 and repressive H3K27 trimethylation in developing inhibitory interneurons, similar to what was found in other cell types. In particular, the transcriptional control of Pak6, interactions of DNMT1 with the Polycomb-repressor complex 2 (PCR2) core enzyme EZH2, mediating repressive H3K27 trimethylations at regulatory regions of the Pak6 gene locus. Similar to what was observed upon Dnmt1 depletion, inhibition of EZH2 caused elevated Pak6 expression levels accompanied by increased morphological complexity, which was rescued by siRNA-mediated downregulation of Pak6 expression. Together, our data emphasise the relevance of DNMT1-dependent crosstalk with histone tail methylation for transcriptional control of genes like Pak6 required for proper cortical interneuron migration.
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Affiliation(s)
- Judit Symmank
- a Institute of Human Genetics , University Hospital Jena , Jena , Germany
| | - Cathrin Bayer
- a Institute of Human Genetics , University Hospital Jena , Jena , Germany
| | - Christiane Schmidt
- a Institute of Human Genetics , University Hospital Jena , Jena , Germany
| | - Anne Hahn
- a Institute of Human Genetics , University Hospital Jena , Jena , Germany
| | - Daniel Pensold
- a Institute of Human Genetics , University Hospital Jena , Jena , Germany
| | - Geraldine Zimmer-Bensch
- a Institute of Human Genetics , University Hospital Jena , Jena , Germany.,b Institute for Biology II , Division of Functional Epigenetics in the Animal Model, RWTH Aachen University , Aachen , Germany
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