1
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Ganuza M, Morales-Hernández A, Van Huizen A, Chabot A, Hall T, Caprio C, Finkelstein D, Kilimann MW, McKinney-Freeman S. Neurobeachin regulates hematopoietic progenitor differentiation and survival by modulating Notch activity. Blood Adv 2024; 8:4129-4143. [PMID: 38905595 PMCID: PMC11345395 DOI: 10.1182/bloodadvances.2023012426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 05/30/2024] [Accepted: 06/14/2024] [Indexed: 06/23/2024] Open
Abstract
ABSTRACT Hematopoietic stem cells (HSCs) can generate all blood cells. This ability is exploited in HSC transplantation (HSCT) to treat hematologic disease. A clear understanding of the molecular mechanisms that regulate HSCT is necessary to continue improving transplant protocols. We identified the Beige and Chediak-Higashi domain-containing protein (BDCP), Neurobeachin (NBEA), as a putative regulator of HSCT. Here, we demonstrated that NBEA and related BDCPs, including LPS Responsive Beige-Like Anchor Protein (LRBA), Neurobeachin Like 1 (NBEAL1) and Lysosomal Trafficking Regulator (LYST), are required during HSCT to efficiently reconstitute the hematopoietic system of lethally irradiated mice. Nbea knockdown in mouse HSCs induced apoptosis and a differentiation block after transplantation. Nbea deficiency in hematopoietic progenitor cells perturbed the expression of genes implicated in vesicle trafficking and led to changes in NOTCH receptor localization. This resulted in perturbation of the NOTCH transcriptional program, which is required for efficient HSC engraftment. In summary, our findings reveal a novel role for NBEA in the control of NOTCH receptor turnover in hematopoietic cells and supports a model in which BDCP-regulated vesicle trafficking is required for efficient HSCT.
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Affiliation(s)
- Miguel Ganuza
- Centre for Haemato-Oncology, Barts Cancer Institute, Queen Mary University of London, London, United Kingdom
| | - Antonio Morales-Hernández
- Department of Periodontics and Oral Medicine, University of Michigan School of Dentistry, Ann Arbor, MI
| | - Alanna Van Huizen
- Department of Hematology, St. Jude Children’s Research Hospital, Memphis, TN
| | - Ashley Chabot
- Department of Hematology, St. Jude Children’s Research Hospital, Memphis, TN
| | - Trent Hall
- Department of Hematology, St. Jude Children’s Research Hospital, Memphis, TN
| | - Claire Caprio
- Department of Hematology, St. Jude Children’s Research Hospital, Memphis, TN
| | - David Finkelstein
- Department of Computational Biology, St. Jude Children’s Research Hospital, Memphis, TN
| | - Manfred W. Kilimann
- Department of Molecular Neurobiology, Max-Planck Institute for Multidisciplinary Sciences, Göttingen, Germany
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2
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Gao Y, Shonai D, Trn M, Zhao J, Soderblom EJ, Garcia-Moreno SA, Gersbach CA, Wetsel WC, Dawson G, Velmeshev D, Jiang YH, Sloofman LG, Buxbaum JD, Soderling SH. Proximity analysis of native proteomes reveals phenotypic modifiers in a mouse model of autism and related neurodevelopmental conditions. Nat Commun 2024; 15:6801. [PMID: 39122707 PMCID: PMC11316102 DOI: 10.1038/s41467-024-51037-x] [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: 02/20/2024] [Accepted: 07/23/2024] [Indexed: 08/12/2024] Open
Abstract
One of the main drivers of autism spectrum disorder is risk alleles within hundreds of genes, which may interact within shared but unknown protein complexes. Here we develop a scalable genome-editing-mediated approach to target 14 high-confidence autism risk genes within the mouse brain for proximity-based endogenous proteomics, achieving the identification of high-specificity spatial proteomes. The resulting native proximity proteomes are enriched for human genes dysregulated in the brain of autistic individuals, and reveal proximity interactions between proteins from high-confidence risk genes with those of lower-confidence that may provide new avenues to prioritize genetic risk. Importantly, the datasets are enriched for shared cellular functions and genetic interactions that may underlie the condition. We test this notion by spatial proteomics and CRISPR-based regulation of expression in two autism models, demonstrating functional interactions that modulate mechanisms of their dysregulation. Together, these results reveal native proteome networks in vivo relevant to autism, providing new inroads for understanding and manipulating the cellular drivers underpinning its etiology.
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Affiliation(s)
- Yudong Gao
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
- Department of Neuroscience, Baylor College of Medicine, Houston, TX, USA
| | - Daichi Shonai
- Department of Molecular Genetics and Microbiology, Duke University School of Medicine, Durham, NC, USA
| | - Matthew Trn
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
| | - Jieqing Zhao
- Department of Biology, Duke University, Durham, NC, USA
| | - Erik J Soderblom
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
- Proteomics and Metabolomics Shared Resource, Duke University School of Medicine, Durham, NC, USA
| | | | - Charles A Gersbach
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
- Department of Biomedical Engineering, Duke University, Durham, NC, USA
- Center for Advanced Genomic Technologies, Duke University, Durham, NC, USA
- Department of Surgery, Duke University Medical Center, Durham, NC, USA
| | - William C Wetsel
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA
- Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, NC, USA
- Department of Neurobiology, Duke University School of Medicine, Durham, NC, USA
- Mouse Behavioral and Neuroendocrine Analysis Core Facility, Duke University School of Medicine, Durham, NC, USA
| | - Geraldine Dawson
- Department of Psychiatry and Behavioral Sciences, Duke University School of Medicine, Durham, NC, USA
| | - Dmitry Velmeshev
- Department of Neurobiology, Duke University School of Medicine, Durham, NC, USA
| | - Yong-Hui Jiang
- Department of Genetics, Yale University School of Medicine, New Haven, Connecticut, USA
- Department of Neuroscience, Yale University School of Medicine, New Haven, Connecticut, USA
- Department of Pediatrics, Yale University School of Medicine, New Haven, Connecticut, USA
| | - Laura G Sloofman
- Seaver Autism Center for Research and Treatment, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Joseph D Buxbaum
- Seaver Autism Center for Research and Treatment, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Department of Psychiatry, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- The Mindich Child Health and Development Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
- Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Scott H Soderling
- Department of Cell Biology, Duke University School of Medicine, Durham, NC, USA.
- Department of Neurobiology, Duke University School of Medicine, Durham, NC, USA.
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3
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Roussa E, Juda P, Laue M, Mai-Kolerus O, Meyerhof W, Sjöblom M, Nikolovska K, Seidler U, Kilimann MW. LRBA, a BEACH protein mutated in human immune deficiency, is widely expressed in epithelia, exocrine and endocrine glands, and neurons. Sci Rep 2024; 14:10678. [PMID: 38724551 PMCID: PMC11082223 DOI: 10.1038/s41598-024-60257-6] [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: 01/29/2024] [Accepted: 04/20/2024] [Indexed: 05/12/2024] Open
Abstract
Mutations in LRBA, a BEACH domain protein, cause severe immune deficiency in humans. LRBA is expressed in many tissues and organs according to biochemical analysis, but little is known about its cellular and subcellular localization, and its deficiency phenotype outside the immune system. By LacZ histochemistry of Lrba gene-trap mice, we performed a comprehensive survey of LRBA expression in numerous tissues, detecting it in many if not all epithelia, in exocrine and endocrine cells, and in subpopulations of neurons. Immunofluorescence microscopy of the exocrine and endocrine pancreas, salivary glands, and intestinal segments, confirmed these patterns of cellular expression and provided information on the subcellular localizations of the LRBA protein. Immuno-electron microscopy demonstrated that in neurons and endocrine cells, which co-express LRBA and its closest relative, neurobeachin, both proteins display partial association with endomembranes in complementary, rather than overlapping, subcellular distributions. Prominent manifestations of human LRBA deficiency, such as inflammatory bowel disease or endocrinopathies, are believed to be primarily due to immune dysregulation. However, as essentially all affected tissues also express LRBA, it is possible that LRBA deficiency enhances their vulnerability and contributes to the pathogenesis.
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Affiliation(s)
- Eleni Roussa
- Department Molecular Embryology, Institute of Anatomy and Cell Biology, Faculty of Medicine, Albert-Ludwigs-University Freiburg, Freiburg, Germany
| | - Pavel Juda
- Department of Molecular Neurobiology, Max-Planck-Institute for Multidisciplinary Sciences, Göttingen, Germany
- Leukocyte Motility Lab, 1st Faculty of Medicine, Charles University of Prague, Vestec, Czech Republic
| | - Michael Laue
- Advanced Light and Electron Microscopy (ZBS 4), Robert Koch Institute, Berlin, Germany
| | - Oliver Mai-Kolerus
- Department of Molecular Genetics, German Institute for Human Nutrition, Potsdam-Rehbruecke, Germany
- Einstein Center for Neurosciences, Charite - Universitätsmedizin Berlin, Berlin, Germany
| | - Wolfgang Meyerhof
- Department of Molecular Genetics, German Institute for Human Nutrition, Potsdam-Rehbruecke, Germany
- Center for Integrative Physiology and Molecular Medicine, Saarland University, Homburg, Germany
| | - Markus Sjöblom
- Department of Medical Cell Biology, Uppsala University, Uppsala, Sweden
| | - Katerina Nikolovska
- Department of Gastroenterology, Hepatology, Infectiology and Endocrinology, Medical University Hannover, Hannover, Germany
| | - Ursula Seidler
- Department of Gastroenterology, Hepatology, Infectiology and Endocrinology, Medical University Hannover, Hannover, Germany
| | - Manfred W Kilimann
- Department of Molecular Neurobiology, Max-Planck-Institute for Multidisciplinary Sciences, Göttingen, Germany.
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4
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Murthy MHS, Jasbi P, Lowe W, Kumar L, Olaosebikan M, Roger L, Yang J, Lewinski N, Daniels N, Cowen L, Klein-Seetharaman J. Insulin signaling and pharmacology in humans and in corals. PeerJ 2024; 12:e16804. [PMID: 38313028 PMCID: PMC10838073 DOI: 10.7717/peerj.16804] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2023] [Accepted: 12/27/2023] [Indexed: 02/06/2024] Open
Abstract
Once thought to be a unique capability of the Langerhans islets in the pancreas of mammals, insulin (INS) signaling is now recognized as an evolutionarily ancient function going back to prokaryotes. INS is ubiquitously present not only in humans but also in unicellular eukaryotes, fungi, worms, and Drosophila. Remote homologue identification also supports the presence of INS and INS receptor in corals where the availability of glucose is largely dependent on the photosynthetic activity of the symbiotic algae. The cnidarian animal host of corals operates together with a 20,000-sized microbiome, in direct analogy to the human gut microbiome. In humans, aberrant INS signaling is the hallmark of metabolic disease, and is thought to play a major role in aging, and age-related diseases, such as Alzheimer's disease. We here would like to argue that a broader view of INS beyond its human homeostasis function may help us understand other organisms, and in turn, studying those non-model organisms may enable a novel view of the human INS signaling system. To this end, we here review INS signaling from a new angle, by drawing analogies between humans and corals at the molecular level.
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Affiliation(s)
| | - Paniz Jasbi
- School of Molecular Sciences, Arizona State University, Phoenix, AZ, USA
| | - Whitney Lowe
- Departments of Chemistry & Physics, Colorado School of Mines, Golden, CO, United States
| | - Lokender Kumar
- Departments of Chemistry & Physics, Colorado School of Mines, Golden, CO, United States
| | | | - Liza Roger
- School of Molecular Sciences, Arizona State University, Phoenix, AZ, USA
- School of Ocean Futures, Arizona State University, Tempe, AZ, United States of America
| | - Jinkyu Yang
- Department of Aeronautics & Astronautics, University of Washington, Seattle, WA, USA
| | - Nastassja Lewinski
- Department of Chemical and Life Science Engineering, Virginia Commonwealth University, Richmond, VA, USA
| | - Noah Daniels
- Department of Computer Science, University of Rhode Island, Kingston, RI, USA
| | - Lenore Cowen
- Department of Computer Science, Tufts University, Medford, MA, USA
| | - Judith Klein-Seetharaman
- School of Molecular Sciences, Arizona State University, Phoenix, AZ, USA
- Departments of Chemistry & Physics, Colorado School of Mines, Golden, CO, United States
- College of Health Solutions, Arizona State University, Phoenix, AZ, United States
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5
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Budniok S, Odent P, Callaerts-Vegh Z, Bosmans G, D'Hooge R. Neurobeachin haploinsufficient mice display sex-independent alterations in cued and contextual fear conditioning. Neuroreport 2023; 34:664-669. [PMID: 37506311 DOI: 10.1097/wnr.0000000000001938] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/30/2023]
Abstract
Neurobeachin ( NBEA ) is a cytoplasmic protein that regulates receptor trafficking, neurotransmitter and hormone secretion, as well as synaptic connectivity. Recently, hippocampus-dependent contextual extinction, the gradual decrease of a conditioned fear response to a context, was suggested to be specifically impaired in male mice with Nbea deficiency ( Nbea+/- ). The current study examines the role of sex in this effect and whether Nbea also influences cued fear conditioning. We included both female and male mice and used a phased contextual and cued fear acquisition protocol that consists of different phases allowing us to assess fear acquisition, cued and contextual fear memory and within-phase extinction. Performance of Nbea+/- mice during assessment of both contextual and cued fear memory was significantly altered compared to controls, independent of sex. Follow-up analyses revealed that this altered performance could be indicative of impaired within-phase extinction. Altered within-phase extinction was not exclusively attributable to hippocampus, and independent of sex. Our results rather suggest that Nbea influences complex learning more broadly across different brain structures.
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Affiliation(s)
- Samuel Budniok
- Laboratory of Biological Psychology, University of Leuven
- Learn2Trust Research Group, University of Leuven, Leuven, Belgium
| | - Paulien Odent
- Laboratory of Biological Psychology, University of Leuven
- Learn2Trust Research Group, University of Leuven, Leuven, Belgium
| | | | - Guy Bosmans
- Learn2Trust Research Group, University of Leuven, Leuven, Belgium
| | - Rudi D'Hooge
- Laboratory of Biological Psychology, University of Leuven
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6
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Cole ES, Maier W, Joachimiak E, Jiang YY, Lee C, Collet E, Chmelik C, Romero DP, Chalker D, Alli NK, Ruedlin TM, Ozzello C, Gaertig J. The Tetrahymena bcd1 mutant implicates endosome trafficking in ciliate, cortical pattern formation. Mol Biol Cell 2023; 34:ar82. [PMID: 37163326 PMCID: PMC10398878 DOI: 10.1091/mbc.e22-11-0501] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 03/15/2023] [Accepted: 05/01/2023] [Indexed: 05/11/2023] Open
Abstract
Ciliates, such as Tetrahymena thermophila, evolved complex mechanisms to determine both the location and dimensions of cortical organelles such as the oral apparatus (OA: involved in phagocytosis), cytoproct (Cyp: for eliminating wastes), and contractile vacuole pores (CVPs: involved in water expulsion). Mutations have been recovered in Tetrahymena that affect both the localization of such organelles along anterior-posterior and circumferential body axes and their dimensions. Here we describe BCD1, a ciliate pattern gene that encodes a conserved Beige-BEACH domain-containing protein a with possible protein kinase A (PKA)-anchoring activity. Similar proteins have been implicated in endosome trafficking and are linked to human Chediak-Higashi syndrome and autism. Mutations in the BCD1 gene broaden cortical organelle domains as they assemble during predivision development. The Bcd1 protein localizes to membrane pockets at the base of every cilium that are active in endocytosis. PKA activity has been shown to promote endocytosis in other organisms, so we blocked clathrin-mediated endocytosis (using "dynasore") and inhibited PKA (using H89). In both cases, treatment produced partial phenocopies of the bcd1 pattern mutant. This study supports a model in which the dimensions of diverse cortical organelle assembly-platforms may be determined by regulated balance between constitutive exocytic delivery and PKA-regulated endocytic retrieval of organelle materials and determinants.
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Affiliation(s)
- Eric S. Cole
- Biology Department, St. Olaf College, Northfield, MN 55057
| | - Wolfgang Maier
- Bioinformatics Group, Department of Computer Science, University of Freiburg, 79110 Freiburg, Germany
| | - Ewa Joachimiak
- Laboratory of Cytoskeleton and Cilia Biology, Nencki Institute of Experimental Biology of Polish Academy of Sciences, 02-093 Warsaw, Poland
| | - Yu-yang Jiang
- Molecular Genetics and Cell Biology, The University of Chicago, Chicago, IL 60637
| | - Chinkyu Lee
- Department of Cellular Biology, University of Georgia, Athens, GA 30605
| | - Erik Collet
- Department of Cell and Developmental Biology, University of Colorado Anschutz Medical Campus, Aurora, CO 80045
| | - Carl Chmelik
- Biology Department, St. Olaf College, Northfield, MN 55057
| | - Daniel P. Romero
- Department of Pharmacology, University of Minnesota, Minneapolis, MN 55455
| | - Douglas Chalker
- Department of Biology, Washington University in St. Louis, St. Louis, MO 63021
| | - Nurudeen K. Alli
- Department of Biology, Washington University in St. Louis, St. Louis, MO 63021
| | - Tina M. Ruedlin
- Department of Biology, Washington University in St. Louis, St. Louis, MO 63021
| | - Courtney Ozzello
- Molecular, Cellular, and Developmental Biology, University of Colorado Boulder, Boulder, CO 80309
| | - Jacek Gaertig
- Department of Cellular Biology, University of Georgia, Athens, GA 30605
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7
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Martin EA, Michel JC, Kissinger JS, Echeverry FA, Lin YP, O'Brien J, Pereda AE, Miller AC. Neurobeachin controls the asymmetric subcellular distribution of electrical synapse proteins. Curr Biol 2023; 33:2063-2074.e4. [PMID: 37172585 PMCID: PMC10266475 DOI: 10.1016/j.cub.2023.04.049] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2022] [Revised: 01/27/2023] [Accepted: 04/19/2023] [Indexed: 05/15/2023]
Abstract
The subcellular positioning of synapses and their specialized molecular compositions form the fundamental basis of neural circuits. Like chemical synapses, electrical synapses are constructed from an assortment of adhesion, scaffolding, and regulatory molecules, yet little is known about how these molecules localize to specific neuronal compartments. Here, we investigate the relationship between the autism- and epilepsy-associated gene Neurobeachin, the neuronal gap junction channel-forming Connexins, and the electrical synapse scaffold ZO1. Using the zebrafish Mauthner circuit, we find Neurobeachin localizes to the electrical synapse independently of ZO1 and Connexins. By contrast, we show Neurobeachin is required postsynaptically for the robust localization of ZO1 and Connexins. We demonstrate that Neurobeachin binds ZO1 but not Connexins. Finally, we find Neurobeachin is required to restrict electrical postsynaptic proteins to dendrites, but not electrical presynaptic proteins to axons. Together, the results reveal an expanded understanding of electrical synapse molecular complexity and the hierarchical interactions required to build neuronal gap junctions. Further, these findings provide novel insight into the mechanisms by which neurons compartmentalize the localization of electrical synapse proteins and provide a cell biological mechanism for the subcellular specificity of electrical synapse formation and function.
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Affiliation(s)
- E Anne Martin
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA.
| | | | - Jane S Kissinger
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA
| | - Fabio A Echeverry
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Ya-Ping Lin
- Department of Ophthalmology & Visual Science, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - John O'Brien
- Department of Ophthalmology & Visual Science, University of Texas Health Science Center at Houston, Houston, TX 77030, USA
| | - Alberto E Pereda
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, NY 10461, USA
| | - Adam C Miller
- Institute of Neuroscience, University of Oregon, Eugene, OR 97403, USA.
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8
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Lathakumari S, Seenipandian S, Balakrishnan S, Raj APMS, Sugiyama H, Namasivayam GP, Sivasubramaniam S. Identification of genes responsible for the social skill in the earthworm, Eudrilus eugeniae. GENE REPORTS 2023. [DOI: 10.1016/j.genrep.2023.101774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/09/2023]
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9
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Ohara RA, Murphy KM. The evolving biology of cross-presentation. Semin Immunol 2023; 66:101711. [PMID: 36645993 PMCID: PMC10931539 DOI: 10.1016/j.smim.2023.101711] [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: 09/20/2022] [Revised: 12/16/2022] [Accepted: 01/07/2023] [Indexed: 01/15/2023]
Abstract
Cross-priming was first recognized in the context of in vivo cytotoxic T lymphocyte (CTL) responses generated against minor histocompatibility antigens induced by immunization with lymphoid cells. Even though the basis for T cell antigen recognition was still largely unclear at that time, these early studies recognized the implication that such minor histocompatibility antigens were derived from the immunizing cells and were obtained exogenously by the host's antigen presenting cells (APCs) that directly prime the CTL response. As antigen recognition by the T cell receptor became understood to involve peptides derived from antigens processed by the APCs and presented by major histocompatibility molecules, the "cross-priming" phenomenon was subsequently recast as "cross-presentation" and the scope considered for examining this process gradually broadened to include many different forms of antigens, including soluble proteins, and different types of APCs that may not be involved in in vivo CTL priming. Many studies of cross-presentation have relied on in vitro cell models that were recently found to differ from in vivo APCs in particular mechanistic details. A recent trend has focused on the APCs and pathways of cross-presentation used in vivo, especially the type 1 dendritic cells. Current efforts are also being directed towards validating the in vivo role of various putative pathways and gene candidates in cross-presentation garnered from various in vitro studies and to determine the relative contributions they make to CTL responses across various forms of antigens and immunologic settings. Thus, cross-presentation appears to be carried by different pathways in various types of cells for different forms under different physiologic settings, which remain to be evaluated in an in vivo physiologic setting.
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Affiliation(s)
- Ray A Ohara
- Department of Pathology and Immunology, Washington University in St. Louis, School of Medicine, St. Louis, MO 63110, USA
| | - Kenneth M Murphy
- Department of Pathology and Immunology, Washington University in St. Louis, School of Medicine, St. Louis, MO 63110, USA.
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10
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Wan X, Jing JN, Wang DF, Lv FH. Whole-genome selective scans detect genes associated with important phenotypic traits in goat ( Capra hircus). Front Genet 2023; 14:1173017. [PMID: 37144124 PMCID: PMC10151485 DOI: 10.3389/fgene.2023.1173017] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2023] [Accepted: 04/03/2023] [Indexed: 05/06/2023] Open
Abstract
Goats with diverse economic phenotypic traits play an important role in animal husbandry. However, the genetic mechanisms underlying complex phenotypic traits are unclear in goats. Genomic studies of variations provided a lens to identify functional genes. In this study, we focused on the worldwide goat breeds with outstanding traits and used whole-genome resequencing data in 361 samples from 68 breeds to detect genomic selection sweep regions. We identified 210-531 genomic regions with six phenotypic traits, respectively. Further gene annotation analysis revealed 332, 203, 164, 300, 205, and 145 candidate genes corresponding with dairy, wool, high prolificacy, poll, big ear, and white coat color traits. Some of these genes have been reported previously (e.g., KIT, KITLG, NBEA, RELL1, AHCY, and EDNRA), while we also discovered novel genes, such as STIM1, NRXN1, LEP, that may be associated with agronomic traits like poll and big ear morphology. Our study found a set of new genetic markers for genetic improvement in goats and provided novel insights into the genetic mechanisms of complex traits.
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Affiliation(s)
- Xing Wan
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Jia-Nan Jing
- College of Animal Science and Technology, China Agricultural University, Beijing, China
| | - Dong-Feng Wang
- CAS Key Laboratory of Animal Ecology and Conservation Biology, Institute of Zoology, Chinese Academy of Sciences (CAS), Beijing, China
- University of Chinese Academy of Sciences (UCAS), Beijing, China
| | - Feng-Hua Lv
- College of Animal Science and Technology, China Agricultural University, Beijing, China
- *Correspondence: Feng-Hua Lv,
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11
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Pan Z, Chen C, Yin F, Peng J. Genotypic and phenotypic spectra of NBEA-related neurodevelopmental disorder with epilepsy: a case series and literature review. World J Pediatr 2022; 18:636-641. [PMID: 35852783 DOI: 10.1007/s12519-022-00567-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/11/2022] [Accepted: 05/04/2022] [Indexed: 11/28/2022]
Affiliation(s)
- Zou Pan
- Department of Pediatrics, Xiangya Hospital of Central South University, Changsha, 410008, China
| | - Chen Chen
- Department of Pediatrics, Xiangya Hospital of Central South University, Changsha, 410008, China
| | - Fei Yin
- Department of Pediatrics, Xiangya Hospital of Central South University, Changsha, 410008, China
| | - Jing Peng
- Department of Pediatrics, Xiangya Hospital of Central South University, Changsha, 410008, China. .,Clinical Research Center for Children Neurodevelopmental Disabilities of Hunan Province, Xiangya Hospital, Central South University, Changsha, 410008, China.
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12
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Understanding the Mechanism of Diabetes Mellitus in a LRBA-Deficient Patient. BIOLOGY 2022; 11:biology11040612. [PMID: 35453810 PMCID: PMC9025338 DOI: 10.3390/biology11040612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/15/2022] [Revised: 04/03/2022] [Accepted: 04/07/2022] [Indexed: 12/04/2022]
Abstract
The scope of this study is to show that DM in a LRBA-deficient patient with a stop codon mutation (c.3999 G > A) was not mediated through autoimmunity. We have evaluated the ability of the proband’s T cells to be activated by assessing their CTLA-4 expression. A nonsignificant difference was seen in the CTLA-4 expression on CD3+ T cells compared to the healthy control at basal level and after stimulation with PMA/ionomycin. Blood transcriptomic analysis have shown a remarkable increase in abundance of transcripts related to CD71+ erythroid cells. There were no differences in the expression of modules related to autoimmunity diseases between the proband and pooled healthy controls. In addition, our novel findings show that siRNA knockdown of LRBA in mouse pancreatic β-cells leads reduced cellular proinsulin, insulin and consequently insulin secretion, without change in cell viability in cultured MIN6 cells.
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Li T, Cao H, Wu S, Zhong P, Ding J, Wang J, Wang F, He Z, Huang GL. Phosphorylated ATF1 at Thr184 promotes metastasis and regulates MMP2 expression in gastric cancer. J Transl Med 2022; 20:169. [PMID: 35397606 PMCID: PMC8994398 DOI: 10.1186/s12967-022-03361-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 03/26/2022] [Indexed: 12/24/2022] Open
Abstract
Background Studies have revealed an important role of activating transcription factor 1 (ATF1) and phosphorylated ATF1 at Ser63 in tumors. Our previous study identified Thr184 as a novel phosphorylation site of ATF1. However, the role of phosphorylated ATF1 at Thr184 (p-ATF1-T184) in tumor is unclear. This study figured out the role of p-ATF1-T184 in the metastasis of gastric cancer (GC) and in the regulation of Matrix metallopeptidase 2 (MMP2). Methods Immunohistochemical analysis (IHC) was performed to analyze the level of p-ATF1-T184 and its relationship with clinicopathological characteristics. Wound scratch test, Transwell assay were used to observe the role of p-ATF1-T184 in the invasion and metastasis of GC. The regulation of MMP2 by p-ATF1-T184 was investigated by a series of experiments including quantitative RT-PCR, western blot, gelatin zymography assay, Chromatin immunoprecipitation (ChIP), luciferase reporter assay and cycloheximide experiment. The Cancer Genome Atlas (TCGA) data were used to analyze the expression and prognostic role of ATF1 and MMP2 in GC. Mass spectrometry (MS) following co-immunoprecipitation (co-IP) assay was performed to identify potential upstream kinases that would phosphorylate ATF1 at Thr184. Results High expression level of p-ATF1-T184 was found and significantly associated with lymph node metastasis and poor survival in a GC cohort of 126 patients. P-ATF1-T184 promoted migration and invasion of gastric cancer cells. Phosphorylation of ATF1-T184 could regulate the mRNA, protein expression and extracellular activity of MMP2. P-ATF1-T184 further increased the DNA binding ability, transcription activity, and stabilized the protein expression of ATF1. Moreover, TCGA data and IHC results suggested that the mRNA level of ATF1 and MMP2, and protein level of p-ATF1-T184 and MMP2 could be prognosis markers of GC. Two protein kinase related genes, LRBA and S100A8, were identified to be correlated with the expression ATF1 in GC. Conclusion Our results indicated that p-ATF1-T184 promoted metastasis of GC by regulating MMP2. Supplementary Information The online version contains supplementary material available at 10.1186/s12967-022-03361-3.
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Alkelai A, Greenbaum L, Docherty AR, Shabalin AA, Povysil G, Malakar A, Hughes D, Delaney SL, Peabody EP, McNamara J, Gelfman S, Baugh EH, Zoghbi AW, Harms MB, Hwang HS, Grossman-Jonish A, Aggarwal V, Heinzen EL, Jobanputra V, Pulver AE, Lerer B, Goldstein DB. The benefit of diagnostic whole genome sequencing in schizophrenia and other psychotic disorders. Mol Psychiatry 2022; 27:1435-1447. [PMID: 34799694 DOI: 10.1038/s41380-021-01383-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/21/2021] [Revised: 10/25/2021] [Accepted: 10/27/2021] [Indexed: 01/04/2023]
Abstract
Schizophrenia has a multifactorial etiology, involving a polygenic architecture. The potential benefit of whole genome sequencing (WGS) in schizophrenia and other psychotic disorders is not well studied. We investigated the yield of clinical WGS analysis in 251 families with a proband diagnosed with schizophrenia (N = 190), schizoaffective disorder (N = 49), or other conditions involving psychosis (N = 48). Participants were recruited in Israel and USA, mainly of Jewish, Arab, and other European ancestries. Trio (parents and proband) WGS was performed for 228 families (90.8%); in the other families, WGS included parents and at least two affected siblings. In the secondary analyses, we evaluated the contribution of rare variant enrichment in particular gene sets, and calculated polygenic risk score (PRS) for schizophrenia. For the primary outcome, diagnostic rate was 6.4%; we found clinically significant, single nucleotide variants (SNVs) or small insertions or deletions (indels) in 14 probands (5.6%), and copy number variants (CNVs) in 2 (0.8%). Significant enrichment of rare loss-of-function variants was observed in a gene set of top schizophrenia candidate genes in affected individuals, compared with population controls (N = 6,840). The PRS for schizophrenia was significantly increased in the affected individuals group, compared to their unaffected relatives. Last, we were also able to provide pharmacogenomics information based on CYP2D6 genotype data for most participants, and determine their antipsychotic metabolizer status. In conclusion, our findings suggest that WGS may have a role in the setting of both research and genetic counseling for individuals with schizophrenia and other psychotic disorders and their families.
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Affiliation(s)
- Anna Alkelai
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA.
| | - Lior Greenbaum
- The Danek Gertner Institute of Human Genetics, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
- The Joseph Sagol Neuroscience Center, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Anna R Docherty
- Department of Psychiatry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Andrey A Shabalin
- Department of Psychiatry, University of Utah School of Medicine, Salt Lake City, UT, USA
| | - Gundula Povysil
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
| | - Ayan Malakar
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
| | - Daniel Hughes
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
| | - Shannon L Delaney
- New York State Psychiatric Institute, Columbia University, New York City, NY, USA
| | - Emma P Peabody
- Psychology Research Laboratory, McLean Hospital, Harvard Medical School, Belmont, MA, USA
| | - James McNamara
- Psychology Research Laboratory, McLean Hospital, Harvard Medical School, Belmont, MA, USA
| | - Sahar Gelfman
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
| | - Evan H Baugh
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
| | - Anthony W Zoghbi
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
- New York State Psychiatric Institute, Columbia University, New York City, NY, USA
- New York State Psychiatric Institute, Office of Mental Health, New York, NY, USA
- Menninger Department of Psychiatry and Behavioral Sciences, Baylor College of Medicine, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Matthew B Harms
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
- Department of Neurology, Columbia University Irving Medical Center, New York, NY, USA
- Center for Motor Neuron Biology and Disease, Columbia University Irving Medical Center, New York, NY, USA
| | - Hann-Shyan Hwang
- Department of Medicine, National Taiwan University School of Medicine, Taipei, Taiwan
| | - Anat Grossman-Jonish
- The Danek Gertner Institute of Human Genetics, Sheba Medical Center, Tel Hashomer, Ramat Gan, Israel
| | - Vimla Aggarwal
- Department of Pathology and Cell Biology, Columbia University, New York, NY, USA
| | - Erin L Heinzen
- Eshelman School of Pharmacy, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
| | - Vaidehi Jobanputra
- Center for Motor Neuron Biology and Disease, Columbia University Irving Medical Center, New York, NY, USA
- New York Genome Center, New York, NY, USA
| | - Ann E Pulver
- Department of Psychiatry and Behavioral Sciences, Johns Hopkins University School of Medicine, Baltimore, MD, USA
| | - Bernard Lerer
- Biological Psychiatry Laboratory, Department of Psychiatry, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - David B Goldstein
- Institute for Genomic Medicine, Columbia University Medical Center, New York, NY, USA
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Cuzon Carlson VC, Aylwin CF, Carlson TL, Ford M, Mesnaoui H, Lomniczi A, Ferguson B, Cervera‐Juanes RP. Neurobeachin, a promising target for use in the treatment of alcohol use disorder. Addict Biol 2022; 27:e13107. [PMID: 34699111 DOI: 10.1111/adb.13107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2021] [Revised: 08/23/2021] [Accepted: 09/24/2021] [Indexed: 11/29/2022]
Abstract
Hazardous, heavy drinking increases risk for developing alcohol use disorder (AUD), which affects ~7% of adult Americans. Thus, understanding the molecular mechanisms promoting risk for heavy drinking is essential to developing more effective AUD pharmacotherapies than those currently approved by the FDA. Using genome-wide bisulfate sequencing, we identified DNA methylation (DNAm) signals within the nucleus accumbens core (NAcC) that differentiate nonheavy and heavy ethanol-drinking rhesus macaques. One differentially DNAm region (D-DMR) located within the gene neurobeachin (NBEA), which promotes synaptic membrane protein trafficking, was hypermethylated in heavy drinking macaques. A parallel study identified a similar NBEA D-DMR in human NAcC that distinguished alcoholic and nonalcoholic individuals. To investigate the role of NBEA in heavy ethanol drinking, we engineered a viral vector carrying a short hairpin RNA (shRNA) to reduce the expression of NBEA. Using two murine models of ethanol consumption: 4 days of drinking-in-the-dark and 4 weeks of chronic intermittent access, the knockdown of NBEA expression did not alter average ethanol consumption in either model. However, it did lead to a significant increase in the ethanol preference ratio. Following withdrawal, whole-cell patch clamp electrophysiological experiments revealed that Nbea knockdown led to an increase in spontaneous excitatory postsynaptic current amplitude with no alteration in spontaneous inhibitory postsynaptic currents, suggesting a specific role of NBEA in trafficking of glutamatergic receptors. Together, our findings suggest that NBEA could be targeted to modulate the preference for alcohol use.
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Affiliation(s)
- Verginia C. Cuzon Carlson
- Division of Neuroscience, Oregon National Primate Research Center Oregon Health & Science University Beaverton Oregon USA
| | - Carlos F. Aylwin
- Division of Genetics, Oregon National Primate Research Center Oregon Health & Science University Beaverton Oregon USA
| | - Timothy L. Carlson
- Division of Neuroscience, Oregon National Primate Research Center Oregon Health & Science University Beaverton Oregon USA
| | - Matthew Ford
- Division of Neuroscience, Oregon National Primate Research Center Oregon Health & Science University Beaverton Oregon USA
| | - Houda Mesnaoui
- Division of Genetics, Oregon National Primate Research Center Oregon Health & Science University Beaverton Oregon USA
| | - Alejandro Lomniczi
- Division of Neuroscience, Oregon National Primate Research Center Oregon Health & Science University Beaverton Oregon USA
| | - Betsy Ferguson
- Division of Genetics, Oregon National Primate Research Center Oregon Health & Science University Beaverton Oregon USA
| | - Rita P. Cervera‐Juanes
- Division of Genetics, Oregon National Primate Research Center Oregon Health & Science University Beaverton Oregon USA
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16
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Cantwell CY, Fortman J, Seegan A. Prazosin use in a patient with rare Neurobeachin gene deletion shows improvement in paranoid behavior: a case report. J Med Case Rep 2021; 15:612. [PMID: 34949210 PMCID: PMC8705137 DOI: 10.1186/s13256-021-03209-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 11/27/2021] [Indexed: 11/24/2022] Open
Abstract
Background Disruption of the Neurobeachin gene is a rare genetic mutation that has been implicated in the development of autism and enhanced long-term potentiation of the hippocampal CA1 region, causing a heightened conditioned fear response and impaired fear extinction. Prazosin, an alpha-1 receptor antagonist, has been used in patients with posttraumatic stress disorder to mitigate the increased alpha-1 activity involved in fear and startle responses. Here we report a case of a patient with a rare Neurobeachin gene deletion, who demonstrated marked and sustained improvement in paranoid behavior within days of prazosin initiation. Case presentation The patient is a 27-year-old White male with autism spectrum disorder, obsessive–compulsive disorder, and schizophrenia, with a chromosome 13q12 deletion including deletion of the Neurobeachin gene, who presented to the emergency department due to worsening functional status and profound weight loss as a result of only eating prepackaged foods. He had not showered or changed clothes in several months prior to presentation. He was hospitalized in the inpatient psychiatric unit for 2 months before prazosin was initiated. During that time, he demonstrated paranoia as evidenced by heightened sensitivity to doors opening, guarded interactions, and limited communication with providers and other patients. He also exhibited poor grooming habits, with aversion to showering, shaving, and changing clothes. Since initiating prazosin, he has demonstrated a brighter affect, initiates and maintains conversations, showers and changes clothes on a regular basis, and eats a variety of foods. At the time of this report, the patient was discharged to live in an apartment with a caregiver after a 7-month inpatient hospitalization. Conclusions Low-dose prazosin shows rapid and sustained improvement in paranoid behavior in a patient with a rare Neurobeachin gene deletion. Prazosin has a relatively favorable side effect profile with once-daily dosing and low cost. Prazosin may provide clinical improvement in patients with Neurobeachin gene deletions due to its theoretical attenuation in fear response through alpha-1 antagonism.
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Affiliation(s)
- Christina Y Cantwell
- UC Irvine Medical Center, Department of Psychiatry and Human Behavior, 101 The City Drive South, Orange, CA, 92868, USA.
| | - Jamie Fortman
- UC Irvine Medical Center, Department of Psychiatry and Human Behavior, 101 The City Drive South, Orange, CA, 92868, USA
| | - Alexis Seegan
- UC Irvine Medical Center, Department of Psychiatry and Human Behavior, 101 The City Drive South, Orange, CA, 92868, USA
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17
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Boulin T, Itani O, El Mouridi S, Leclercq-Blondel A, Gendrel M, Macnamara E, Soldatos A, Murphy JL, Gorman MP, Lindsey A, Shimada S, Turner D, Silverman GA, Baldridge D, Malicdan MC, Schedl T, Pak SC. Functional analysis of a de novo variant in the neurodevelopment and generalized epilepsy disease gene NBEA. Mol Genet Metab 2021; 134:195-202. [PMID: 34412939 PMCID: PMC10626981 DOI: 10.1016/j.ymgme.2021.07.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 06/21/2021] [Accepted: 07/30/2021] [Indexed: 01/09/2023]
Abstract
Neurobeachin (NBEA) was initially identified as a candidate gene for autism. Recently, variants in NBEA have been associated with neurodevelopmental delay and childhood epilepsy. Here, we report on a novel NBEA missense variant (c.5899G > A, p.Gly1967Arg) in the Domain of Unknown Function 1088 (DUF1088) identified in a child enrolled in the Undiagnosed Diseases Network (UDN), who presented with neurodevelopmental delay and seizures. Modeling of this variant in the Caenorhabditis elegans NBEA ortholog, sel-2, indicated that the variant was damaging to in vivo function as evidenced by altered cell fate determination and trafficking of potassium channels in neurons. The variant effect was indistinguishable from that of the reference null mutation suggesting that the variant is a strong hypomorph or a complete loss-of-function. Our experimental data provide strong support for the molecular diagnosis and pathogenicity of the NBEA p.Gly1967Arg variant and the importance of the DUF1088 for NBEA function.
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Affiliation(s)
- Thomas Boulin
- Institut NeuroMyoGène, Univ Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5310, INSERM U1217, Lyon 69008, France
| | - Omar Itani
- C. elegans Model Organism Screening Center, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA; Department of Pediatrics, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Sonia El Mouridi
- Institut NeuroMyoGène, Univ Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5310, INSERM U1217, Lyon 69008, France
| | - Alice Leclercq-Blondel
- Institut NeuroMyoGène, Univ Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5310, INSERM U1217, Lyon 69008, France
| | - Marie Gendrel
- Institut NeuroMyoGène, Univ Lyon, Université Claude Bernard Lyon 1, CNRS UMR 5310, INSERM U1217, Lyon 69008, France; Institut de Biologie de l'Ecole Normale Supérieure (IBENS), Ecole Normale Supérieure, CNRS, INSERM, Université Paris Sciences et Lettres Research University, Paris 75005, France
| | - Ellen Macnamara
- Undiagnosed Diseases Program Translational Laboratory, NHGRI, National Institutes of Health, Bethesda, MD 20892, USA
| | - Ariane Soldatos
- Undiagnosed Diseases Program Translational Laboratory, NHGRI, National Institutes of Health, Bethesda, MD 20892, USA
| | - Jennifer L Murphy
- Undiagnosed Diseases Program Translational Laboratory, NHGRI, National Institutes of Health, Bethesda, MD 20892, USA
| | - Mark P Gorman
- Department of Neurology, Neuroimmunology Program, Boston Children's Hospital, Harvard Medical School, Boston, MA 02115, USA
| | - Anika Lindsey
- C. elegans Model Organism Screening Center, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA; Department of Pediatrics, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Shino Shimada
- Undiagnosed Diseases Program Translational Laboratory, NHGRI, National Institutes of Health, Bethesda, MD 20892, USA
| | - Darian Turner
- C. elegans Model Organism Screening Center, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA; Department of Pediatrics, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Gary A Silverman
- Department of Pediatrics, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Dustin Baldridge
- Department of Pediatrics, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - May C Malicdan
- Undiagnosed Diseases Program Translational Laboratory, NHGRI, National Institutes of Health, Bethesda, MD 20892, USA
| | - Tim Schedl
- C. elegans Model Organism Screening Center, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA; Department of Genetics, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA
| | - Stephen C Pak
- C. elegans Model Organism Screening Center, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA; Department of Pediatrics, Washington University in St Louis School of Medicine, St Louis, MO 63110, USA.
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18
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Privitera F, Calonaci A, Doddato G, Papa FT, Baldassarri M, Pinto AM, Mari F, Longo I, Caini M, Galimberti D, Hadjistilianou T, De Francesco S, Renieri A, Ariani F. 13q Deletion Syndrome Involving RB1: Characterization of a New Minimal Critical Region for Psychomotor Delay. Genes (Basel) 2021; 12:1318. [PMID: 34573300 PMCID: PMC8471443 DOI: 10.3390/genes12091318] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 08/24/2021] [Accepted: 08/24/2021] [Indexed: 11/17/2022] Open
Abstract
Retinoblastoma (RB) is an ocular tumor of the pediatric age caused by biallelic inactivation of the RB1 gene (13q14). About 10% of cases are due to gross-sized molecular deletions. The deletions can involve the surrounding genes delineating a contiguous gene syndrome characterized by RB, developmental anomalies, and peculiar facial dysmorphisms. Overlapping deletions previously found by traditional and/or molecular cytogenetic analysis allowed to define some critical regions for intellectual disability (ID) and multiple congenital anomalies, with key candidate genes. In the present study, using array-CGH, we characterized seven new patients with interstitial 13q deletion involving RB1. Among these cases, three patients with medium or large 13q deletions did not present psychomotor delay. This allowed defining a minimal critical region for ID that excludes the previously suggested candidate genes (HTR2A, NUFIP1, PCDH8, and PCDH17). The region contains 36 genes including NBEA, which emerged as the candidate gene associated with developmental delay. In addition, MAB21L1, DCLK1, EXOSC8, and SPART haploinsufficiency might contribute to the observed impaired neurodevelopmental phenotype. In conclusion, this study adds important novelties to the 13q deletion syndrome, although further studies are needed to better characterize the contribution of different genes and to understand how the haploinsufficiency of this region can determine ID.
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Affiliation(s)
- Flavia Privitera
- Medical Genetics, University of Siena, 53100 Siena, Italy; (F.P.); (G.D.); (F.T.P.); (M.B.); (F.M.); (A.R.)
- Med Biotech Hub and Competence Center, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Arianna Calonaci
- Unit of Pediatrics, Department of Maternal, Newborn and Child Health, Azienda Ospedaliera Universitaria Senese, Policlinico ‘Santa Maria alle Scotte’, 53100 Siena, Italy; (A.C.); (M.C.); (D.G.)
| | - Gabriella Doddato
- Medical Genetics, University of Siena, 53100 Siena, Italy; (F.P.); (G.D.); (F.T.P.); (M.B.); (F.M.); (A.R.)
- Med Biotech Hub and Competence Center, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Filomena Tiziana Papa
- Medical Genetics, University of Siena, 53100 Siena, Italy; (F.P.); (G.D.); (F.T.P.); (M.B.); (F.M.); (A.R.)
- Med Biotech Hub and Competence Center, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Margherita Baldassarri
- Medical Genetics, University of Siena, 53100 Siena, Italy; (F.P.); (G.D.); (F.T.P.); (M.B.); (F.M.); (A.R.)
- Med Biotech Hub and Competence Center, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
| | - Anna Maria Pinto
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, 53100 Siena, Italy; (A.M.P.); (I.L.)
| | - Francesca Mari
- Medical Genetics, University of Siena, 53100 Siena, Italy; (F.P.); (G.D.); (F.T.P.); (M.B.); (F.M.); (A.R.)
- Med Biotech Hub and Competence Center, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, 53100 Siena, Italy; (A.M.P.); (I.L.)
| | - Ilaria Longo
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, 53100 Siena, Italy; (A.M.P.); (I.L.)
| | - Mauro Caini
- Unit of Pediatrics, Department of Maternal, Newborn and Child Health, Azienda Ospedaliera Universitaria Senese, Policlinico ‘Santa Maria alle Scotte’, 53100 Siena, Italy; (A.C.); (M.C.); (D.G.)
| | - Daniela Galimberti
- Unit of Pediatrics, Department of Maternal, Newborn and Child Health, Azienda Ospedaliera Universitaria Senese, Policlinico ‘Santa Maria alle Scotte’, 53100 Siena, Italy; (A.C.); (M.C.); (D.G.)
| | - Theodora Hadjistilianou
- Unit of Ophthalmology and Retinoblastoma Referral Center, Department of Surgery, University of Siena, Policlinico ‘Santa Maria alle Scotte’, 53100 Siena, Italy; (T.H.); (S.D.F.)
| | - Sonia De Francesco
- Unit of Ophthalmology and Retinoblastoma Referral Center, Department of Surgery, University of Siena, Policlinico ‘Santa Maria alle Scotte’, 53100 Siena, Italy; (T.H.); (S.D.F.)
| | - Alessandra Renieri
- Medical Genetics, University of Siena, 53100 Siena, Italy; (F.P.); (G.D.); (F.T.P.); (M.B.); (F.M.); (A.R.)
- Med Biotech Hub and Competence Center, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, 53100 Siena, Italy; (A.M.P.); (I.L.)
| | - Francesca Ariani
- Medical Genetics, University of Siena, 53100 Siena, Italy; (F.P.); (G.D.); (F.T.P.); (M.B.); (F.M.); (A.R.)
- Med Biotech Hub and Competence Center, Department of Medical Biotechnologies, University of Siena, 53100 Siena, Italy
- Genetica Medica, Azienda Ospedaliera Universitaria Senese, 53100 Siena, Italy; (A.M.P.); (I.L.)
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Chin S, Kwon T, Khan BR, Sparks JA, Mallery EL, Szymanski DB, Blancaflor EB. Spatial and temporal localization of SPIRRIG and WAVE/SCAR reveal roles for these proteins in actin-mediated root hair development. THE PLANT CELL 2021; 33:2131-2148. [PMID: 33881536 PMCID: PMC8364238 DOI: 10.1093/plcell/koab115] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 04/15/2021] [Indexed: 05/31/2023]
Abstract
Root hairs are single-cell protrusions that enable roots to optimize nutrient and water acquisition. These structures attain their tubular shapes by confining growth to the cell apex, a process called tip growth. The actin cytoskeleton and endomembrane systems are essential for tip growth; however, little is known about how these cellular components coordinate their activities during this process. Here, we show that SPIRRIG (SPI), a beige and Chediak Higashi domain-containing protein involved in membrane trafficking, and BRK1 and SCAR2, subunits of the WAVE/SCAR (W/SC) actin nucleating promoting complex, display polarized localizations in Arabidopsis thaliana root hairs during distinct developmental stages. SPI accumulates at the root hair apex via post-Golgi compartments and positively regulates tip growth by maintaining tip-focused vesicle secretion and filamentous-actin integrity. BRK1 and SCAR2 on the other hand, mark the root hair initiation domain to specify the position of root hair emergence. Consistent with the localization data, tip growth was reduced in spi and the position of root hair emergence was disrupted in brk1 and scar1234. BRK1 depletion coincided with SPI accumulation as root hairs transitioned from initiation to tip growth. Taken together, our work uncovers a role for SPI in facilitating actin-dependent root hair development in Arabidopsis through pathways that might intersect with W/SC.
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Affiliation(s)
- Sabrina Chin
- Noble Research Institute LLC, 2510 Sam Noble Parkway, Ardmore, Oklahoma 73401, USA
| | - Taegun Kwon
- Noble Research Institute LLC, 2510 Sam Noble Parkway, Ardmore, Oklahoma 73401, USA
| | - Bibi Rafeiza Khan
- Noble Research Institute LLC, 2510 Sam Noble Parkway, Ardmore, Oklahoma 73401, USA
| | - J. Alan Sparks
- Noble Research Institute LLC, 2510 Sam Noble Parkway, Ardmore, Oklahoma 73401, USA
| | - Eileen L. Mallery
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana 47907, USA
| | - Daniel B. Szymanski
- Department of Botany and Plant Pathology, Purdue University, West Lafayette, Indiana 47907, USA
- Department of Biological Sciences, Purdue University, West Lafayette, Indiana 47907, USA
| | - Elison B. Blancaflor
- Noble Research Institute LLC, 2510 Sam Noble Parkway, Ardmore, Oklahoma 73401, USA
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20
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Pham HTN, Tran HN, Le XT, Do HT, Nguyen TT, Le Nguyen C, Yoshida H, Yamaguchi M, William FR, Matsumoto K. Ilex kudingcha C.J. Tseng Mitigates Phenotypic Characteristics of Human Autism Spectrum Disorders in a Drosophila Melanogaster Rugose Mutant. Neurochem Res 2021; 46:1995-2007. [PMID: 33950474 DOI: 10.1007/s11064-021-03337-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 04/05/2021] [Accepted: 04/29/2021] [Indexed: 12/30/2022]
Abstract
Autism spectrum disorders (ASD) have heterogeneous etiologies involving dysfunction of central nervous systems, for which no effective pan-specific treatments are available. Ilex kudingcha (IK) C.J. Tseng is a nootropic botanical used in Asia for neuroprotection and improvement of cognition. This study establishes that a chemically characterized extract from IK (IKE) mitigates behavioral traits in the Drosophila melanogaster rugose mutant, whose traits resemble human ASD, and examines possible mechanisms. IKE treatment significantly ameliorated deficits in social interaction, short-term memory, and locomotor activity in Drosophila rugose, and significantly increased synaptic bouton number of size more than 2 μm2 in the neuromuscular junctions (NMJs) of Drosophila rugose. To clarify mechanism(s) of IKE action, methylphenidate (MPH), a dopamine transporter inhibitor, was included as a reference drug in the behavioral assays: MPH significantly improved social interaction and short-term memory deficit in Drosophila rugose; administration of the dopamine D1 receptor antagonist SCH23390 and dopamine D2 receptor antagonist sulpiride reversed the ameliorative effects of both MPH and IKE on the social interaction deficits of Drosophila rugose. To extend analysis of IKE treatment to the vertebrate central nervous system, ASD-associated gene expression in mouse hippocampus was studied by RNA-seq: IKE treatment altered the expression of genes coding phosphoinositide 3-kinases/protein kinase B (PI3K-Akt), proteins in glutamatergic, dopaminergic, serotonergic, and GABAergic synapses, cAMP response element-binding protein (CREB), and RNA transporter proteins. These results provide a foundation for further analysis of IKE as a candidate for treatment of some forms of ASD.
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Affiliation(s)
- Hang Thi Nguyet Pham
- National Institute of Medicinal Materials, Hoan Kiem District, Hanoi, 110100, Vietnam.
| | - Hong Nguyen Tran
- National Institute of Medicinal Materials, Hoan Kiem District, Hanoi, 110100, Vietnam
| | - Xoan Thi Le
- National Institute of Medicinal Materials, Hoan Kiem District, Hanoi, 110100, Vietnam
| | - Ha Thi Do
- National Institute of Medicinal Materials, Hoan Kiem District, Hanoi, 110100, Vietnam
| | - Tue Trong Nguyen
- Hanoi Medical University, Dong Da District, Hanoi, 116001, Vietnam
| | - Chien Le Nguyen
- Military Medical Academy, Ha Dong District, Hanoi, 100000, Vietnam
| | - Hideki Yoshida
- Kyoto Institute of Technology, Matsugasaki, Kyoto, Sakyo-ku, 606-8585, Japan
| | - Masamistu Yamaguchi
- Kyoto Institute of Technology, Matsugasaki, Kyoto, Sakyo-ku, 606-8585, Japan.,Kansai Gakken Laboratory, Kankyo Eisei Yakuhin Co. Ltd, Seika-cho, Kyoto, 619-0237, Japan
| | - Folk R William
- Department of Biochemistry, University of Missouri, Columbia, MO, 65211, USA
| | - Kinzo Matsumoto
- Center for Supporting Pharmaceutical Education, Daiichi University of Phamacy, Fukuoka, 815-8511, Japan
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21
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Miura S, Shimojo T, Morikawa T, Kamada T, Uchiyama Y, Kurata S, Fujioka R, Shibata H. Familial paroxysmal kinesigenic dyskinesia with a novel missense variant (Arg2866Trp) in NBEA. J Hum Genet 2021; 66:805-811. [PMID: 33692494 DOI: 10.1038/s10038-021-00914-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2020] [Revised: 02/17/2021] [Accepted: 02/20/2021] [Indexed: 11/10/2022]
Abstract
Paroxysmal kinesigenic dyskinesia (PKD) is a movement disorder characterized by episodic involuntary movement attacks triggered by sudden movements, acceleration, or intention to move. We ascertained two Japanese familial cases with PKD. The proband is a 22-year-old woman who had noted sudden brief (<30 s) of involuntary movements provoked by kinesigenic trigger such as starting to run, getting on a train, picking up a telephone receiver and so on at the age of 14. Interictal brain single photon emission computed tomography (SPECT) showed hyperperfusion in the left thalamus. A 46-year-old woman, the mother of the proband was also suffering from brief attacks triggered by starting to run in her high school days. On neurological examination, both showed no abnormality. Whole exome sequencing combined with rigorous filtering revealed two heterozygous nonsynonymous variants (NM_001447: c.8976G > C [p.Gln2992His] in FAT2 and NM_015678: c.8596C > T [p.Arg2866Trp] in NBEA). Real time quantitative PCR analysis of Nbea mRNA levels in the developing rat brain revealed peak at postnatal day 28 and decline at postnatal day 56. This result might match the most common clinical course of PKD from the point of view of the most common age at remission. NBEA has been reported to be responsible for neurodevelopmental disease accompanied by epilepsy. We concluded the variant in NBEA most likely to be responsible for our familial cases of PKD.
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Affiliation(s)
- Shiroh Miura
- Department of Neurology and Geriatric Medicine, Ehime University Graduate School of Medicine, Toon, 791-0295, Japan.,Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Tomofumi Shimojo
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Takuya Morikawa
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan
| | - Takashi Kamada
- Department of Neurology, Fukuoka Sanno Hospital, Fukuoka, 814-0001, Japan
| | - Yusuke Uchiyama
- Department of Radiology, Kurume University School of Medicine, Kurume, 830-0011, Japan
| | - Seiji Kurata
- Department of Radiology, Kurume University School of Medicine, Kurume, 830-0011, Japan
| | - Ryuta Fujioka
- Department of Food and Nutrition, Beppu University Junior College, Beppu, 874-8501, Japan
| | - Hiroki Shibata
- Division of Genomics, Medical Institute of Bioregulation, Kyushu University, Fukuoka, 812-8582, Japan.
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22
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Odent P, Creemers JW, Bosmans G, D'Hooge R. Spectrum of social alterations in the Neurobeachin haploinsufficiency mouse model of autism. Brain Res Bull 2020; 167:11-21. [PMID: 33197534 DOI: 10.1016/j.brainresbull.2020.11.007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2020] [Revised: 10/30/2020] [Accepted: 11/10/2020] [Indexed: 12/24/2022]
Abstract
Autism spectrum disorder (ASD) is a common and pervasive neurodevelopmental disorder, characterized by sexually divergent social deficits. Its etiology is multifactorial with an important contribution of genetic factors. Neurobeachin (Nbea), a brain-enriched multidomain scaffolding protein, is an ASD candidate gene that was found to be translocated or deleted in ASD patients. Nbea haploinsufficient (+/-) mice have been proposed as an ASD mouse model, but its broad-spectrum social phenotype, sexual divergence and age-related robustness remain unstudied. This study compared one-year-old male and female Nbea+/- mice and their control littermates in an extensive behavioral battery that focused on social behaviors and communication. Nbea haploinsufficiency was associated with selective, sex-dependent, quantitative and qualitative changes, including alterations in social interest and approach, ultrasonic vocalization (USV) between same-sex adult conspecifics, and preferred types of social interaction. Notably, Nbea+/- females (but not males) displayed a significantly higher number of calls, and the mean principal frequency of their calls was higher than those of normal female littermates. Our results demonstrate that Nbea haploinsufficiency alters various aspects of social performance that are also altered in clinical ASD. The phenotype was often different between male and female mice, even though this sexual divergence was sometimes counterintuitive to observations in people with ASD, and probably influenced by differences in social interaction between male and female mice. By and large, however, this study demonstrates the clinical validity and robustness of the ASD-like phenotype of Nbea+/- mice.
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Affiliation(s)
- Paulien Odent
- Research Groups of Biological Psychology, Tiensestraat 102, Leuven, Belgium(1)
| | - John W Creemers
- Research Groups of Biochemical Neuroendocrinology, Herestraat 49, Leuven, Belgium(1)
| | - Guy Bosmans
- Research Groups of Clinical Psychology, Tiensestraat 102, Leuven, Belgium(1)
| | - Rudi D'Hooge
- Research Groups of Biological Psychology, Tiensestraat 102, Leuven, Belgium(1).
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23
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Enhanced LTP of population spikes in the dentate gyrus of mice haploinsufficient for neurobeachin. Sci Rep 2020; 10:16058. [PMID: 32994505 PMCID: PMC7524738 DOI: 10.1038/s41598-020-72925-4] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/29/2019] [Accepted: 09/07/2020] [Indexed: 12/16/2022] Open
Abstract
Deletion of the autism candidate molecule neurobeachin (Nbea), a large PH-BEACH-domain containing neuronal protein, has been shown to affect synaptic function by interfering with neurotransmitter receptor targeting and dendritic spine formation. Previous analysis of mice lacking one allele of the Nbea gene identified impaired spatial learning and memory in addition to altered autism-related behaviours. However, no functional data from living heterozygous Nbea mice (Nbea+/−) are available to corroborate the behavioural phenotype. Here, we explored the consequences of Nbea haploinsufficiency on excitation/inhibition balance and synaptic plasticity in the intact hippocampal dentate gyrus of Nbea+/− animals in vivo by electrophysiological recordings. Based on field potential recordings, we show that Nbea+/− mice display enhanced LTP of the granule cell population spike, but no differences in basal synaptic transmission, synapse numbers, short-term plasticity, or network inhibition. These data indicate that Nbea haploinsufficiency causes remarkably specific alterations to granule cell excitability in vivo, which may contribute to the behavioural abnormalities in Nbea+/− mice and to related symptoms in patients.
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24
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Peixoto RT, Chantranupong L, Hakim R, Levasseur J, Wang W, Merchant T, Gorman K, Budnik B, Sabatini BL. Abnormal Striatal Development Underlies the Early Onset of Behavioral Deficits in Shank3B -/- Mice. Cell Rep 2020; 29:2016-2027.e4. [PMID: 31722214 PMCID: PMC6889826 DOI: 10.1016/j.celrep.2019.10.021] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Revised: 07/12/2019] [Accepted: 10/04/2019] [Indexed: 11/17/2022] Open
Abstract
The neural substrates and pathophysiological mechanisms underlying the onset of cognitive and motor deficits in autism spectrum disorders (ASDs) remain unclear. Mutations in ASD-associated SHANK3 in mice (Shank3B−/−) result in the accelerated maturation of corticostriatal circuits during the second and third postnatal weeks. Here, we show that during this period, there is extensive remodeling of the striatal synaptic proteome and a developmental switch in glutamatergic synaptic plasticity induced by cortical hyperactivity in striatal spiny projection neurons (SPNs). Behavioral abnormalities in Shank3B−/− mice emerge during this stage and are ameliorated by normalizing excitatory synapse connectivity in medial striatal regions by the downregulation of PKA activity. These results suggest that the abnormal postnatal development of striatal circuits is implicated in the onset of behavioral deficits in Shank3B−/− mice and that modulation of postsynaptic PKA activity can be used to regulate corticostriatal drive in developing SPNs of mouse models of ASDs and other neurodevelopmental disorders. Peixoto et al. show that the onset of behavioral deficits in Shank3B−/− mice occurs during early postnatal development and that these can be ameliorated by reducing the glutamatergic synaptic drive in medial regions of the striatum by the downregulation of PKA activity.
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Affiliation(s)
- Rui Tiago Peixoto
- Department of Psychiatry, University of Pittsburgh, 450 Technology Dr, Pittsburgh, PA 15219, USA; Howard Hughes Medical Institute, Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA.
| | - Lynne Chantranupong
- Howard Hughes Medical Institute, Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA
| | - Richard Hakim
- Howard Hughes Medical Institute, Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA
| | - James Levasseur
- Howard Hughes Medical Institute, Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA
| | - Wengang Wang
- Howard Hughes Medical Institute, Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA
| | - Tasha Merchant
- Department of Psychiatry, University of Pittsburgh, 450 Technology Dr, Pittsburgh, PA 15219, USA; Howard Hughes Medical Institute, Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA
| | - Kelly Gorman
- Howard Hughes Medical Institute, Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA
| | - Bogdan Budnik
- Mass Spectrometry and Proteomic Laboratory, FAS Division of Science, Harvard University, 52 Oxford Street, Cambridge, MA 02138, USA
| | - Bernardo Luis Sabatini
- Howard Hughes Medical Institute, Department of Neurobiology, Harvard Medical School, 220 Longwood Ave., Boston, MA 02115, USA
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25
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Miura M, Ishiyama A, Nakagawa E, Sasaki M, Kurosawa K, Inoue K, Goto YI. 13q13.3 microdeletion associated with apparently balanced translocation of 46,XX,t(7;13) suggests NBEA involvement. Brain Dev 2020; 42:581-586. [PMID: 32507666 DOI: 10.1016/j.braindev.2020.05.006] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 03/06/2020] [Accepted: 05/17/2020] [Indexed: 02/07/2023]
Abstract
BACKGROUND Deletion of 13q13.3 is an extremely rare event. CASE We report on a 25-month-old girl with neurodevelopmental disorder and intellectual disability. She had dysmorphic facies characterized by synophrys, long and narrow palpebral fissures; and a large, round face with small organs such as the eyes and mouth positioned near the center. She was hypotonic and had autism-like behaviors. Blood tests and brain MRI revealed no specific findings. However, G-banding chromosome analysis showed an apparently balanced translocation: 46,XX,t(7,13)(q11.23;q12.3). Both parents had normal karyotypes. Furthermore, her abnormal phenotype and chromosomal breakpoint lesion were suspected to be associated. Hence, we conducted array comparative genomic hybridization, which revealed a 3.2 Mb novel pathological microdeletion at 13q13.3 involving 17 genes including neurobeachin (NBEA), a neurodevelopment disorder gene. Furthermore, fluorescence in situ hybridization using probes adjacent to the microdeletion suggested a concomitant occurrence of the deletion and translocation as the structural basis of this rare genomic variant. CONCLUSION NBEA may have roles in her neurodevelopmental phenotypes, whereas other genes within the 13q13.3 microdeletion may contribute to her dysmorphic features.
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Affiliation(s)
- Masaki Miura
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Akihiko Ishiyama
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan.
| | - Eiji Nakagawa
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Masayuki Sasaki
- Department of Child Neurology, National Center Hospital, National Center of Neurology and Psychiatry (NCNP), Tokyo, Japan
| | - Kenji Kurosawa
- Division of Medical Genetics, Kanagawa Children's Medical Center, Yokohama, Japan
| | - Ken Inoue
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, NCNP, Tokyo, Japan
| | - Yu-Ichi Goto
- Department of Mental Retardation and Birth Defect Research, National Institute of Neuroscience, NCNP, Tokyo, Japan
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26
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Moreno-Corona NC, Lopez-Ortega O, Flores Hermenegildo JM, Berron-Ruiz L, Rodriguez-Alba JC, Santos-Argumedo L, Lopez-Herrera G. Lipopolysaccharide-responsive beige-like anchor acts as a cAMP-dependent protein kinase anchoring protein in B cells. Scand J Immunol 2020; 92:e12922. [PMID: 32592188 DOI: 10.1111/sji.12922] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 05/15/2020] [Accepted: 06/21/2020] [Indexed: 01/04/2023]
Abstract
Lipopolysaccharide (LPS)-responsive beige-like anchor (LRBA) protein was initially described as a monogenetic cause for common variable immune deficiency, a syndrome characterized by low levels of B cells, defects in memory B cell differentiation and hypogammaglobulinaemia. LRBA was identified as an LPS up-regulated gene in B cells, macrophages and T cells. LRBA weighs 320 kDa and has 2863 amino acids. Its sequence contains multiple domains, suggesting that LRBA can act as a scaffolding protein. It contains two putative binding sites for cAMP-dependent kinase (PKA) regulatory subunits, suggesting this protein can act as A-kinase anchor protein (AKAP); however, physical interactions involving LRBA and PKA have not been demonstrated to date, and functional roles for such interactions are unexplored. In this work, we investigated physical interactions involving LRBA with regulatory subunits of PKA in human B cell lines and primary human B cells. PKA is a holoenzyme composed of two regulatory subunits, which can be RIα, RIβ, RIIα or RIIβ, and two catalytic subunits, Cα or Cβ. We co-immunoprecipitated LRBA using Ramos B cell lymphoma cells and observed that LRBA interacts with RIIβ. Interestingly, St-Ht31, an inhibitory peptide that disrupts AKAP interactions with regulatory subunits, reduced the amount of interacting protein. Furthermore, in primary human B cells, LRBA was induced after CD40L and IL-4 stimulation, and under such activation, we found that LRBA interacts with RIIα and RIIβ, suggesting that LRBA acts as an AKAP and binds RII subunits. Interestingly, we also identified that LRBA interacts with activation-induced cytidine deaminase in primary B cells, suggesting that it is involved in B cell function.
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Affiliation(s)
- Nidia Carolina Moreno-Corona
- Biomedicina Molecular, Centro de Investigacion y de Estudios Avanzados, Mexico City, Mexico.,Unidad de Investigacion en Inmunodeficiencias, Instituto Nacional de Pediatria, Mexico City, Mexico
| | - Orestes Lopez-Ortega
- Biomedicina Molecular, Centro de Investigacion y de Estudios Avanzados, Mexico City, Mexico
| | - Jose Mizael Flores Hermenegildo
- Biomedicina Molecular, Centro de Investigacion y de Estudios Avanzados, Mexico City, Mexico.,Unidad de Investigacion en Inmunodeficiencias, Instituto Nacional de Pediatria, Mexico City, Mexico
| | - Laura Berron-Ruiz
- Unidad de Investigacion en Inmunodeficiencias, Instituto Nacional de Pediatria, Mexico City, Mexico
| | - Juan Carlos Rodriguez-Alba
- Unidad de Citometria de Flujo, Instituto de Ciencias de la Salud, Universidad Veracruzana, Xalapa, Veracruz, Mexico
| | | | - Gabriela Lopez-Herrera
- Unidad de Investigacion en Inmunodeficiencias, Instituto Nacional de Pediatria, Mexico City, Mexico
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27
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Martin EA, Lasseigne AM, Miller AC. Understanding the Molecular and Cell Biological Mechanisms of Electrical Synapse Formation. Front Neuroanat 2020; 14:12. [PMID: 32372919 PMCID: PMC7179694 DOI: 10.3389/fnana.2020.00012] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 03/09/2020] [Indexed: 12/20/2022] Open
Abstract
In this review article, we will describe the recent advances made towards understanding the molecular and cell biological mechanisms of electrical synapse formation. New evidence indicates that electrical synapses, which are gap junctions between neurons, can have complex molecular compositions including protein asymmetries across joined cells, diverse morphological arrangements, and overlooked similarities with other junctions, all of which indicate new potential roles in neurodevelopmental disease. Aquatic organisms, and in particular the vertebrate zebrafish, have proven to be excellent models for elucidating the molecular mechanisms of electrical synapse formation. Zebrafish will serve as our main exemplar throughout this review and will be compared with other model organisms. We highlight the known cell biological processes that build neuronal gap junctions and compare these with the assemblies of adherens junctions, tight junctions, non-neuronal gap junctions, and chemical synapses to explore the unknown frontiers remaining in our understanding of the critical and ubiquitous electrical synapse.
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Affiliation(s)
- E Anne Martin
- Department of Biology, Institute of Neuroscience, University of Oregon, Eugene, OR, United States
| | - Abagael M Lasseigne
- Department of Biology, Institute of Neuroscience, University of Oregon, Eugene, OR, United States
| | - Adam C Miller
- Department of Biology, Institute of Neuroscience, University of Oregon, Eugene, OR, United States
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28
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Gromova KV, Muhia M, Rothammer N, Gee CE, Thies E, Schaefer I, Kress S, Kilimann MW, Shevchuk O, Oertner TG, Kneussel M. Neurobeachin and the Kinesin KIF21B Are Critical for Endocytic Recycling of NMDA Receptors and Regulate Social Behavior. Cell Rep 2019; 23:2705-2717. [PMID: 29847800 DOI: 10.1016/j.celrep.2018.04.112] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/30/2017] [Revised: 02/20/2018] [Accepted: 04/25/2018] [Indexed: 11/24/2022] Open
Abstract
Autism spectrum disorders (ASDs) are associated with mutations affecting synaptic components, including GluN2B-NMDA receptors (NMDARs) and neurobeachin (NBEA). NBEA participates in biosynthetic pathways to regulate synapse receptor targeting, synaptic function, cognition, and social behavior. However, the role of NBEA-mediated transport in specific trafficking routes is unclear. Here, we highlight an additional function for NBEA in the local delivery and surface re-insertion of synaptic receptors in mouse neurons. NBEA dynamically interacts with Rab4-positive recycling endosomes, transiently enters spines in an activity-dependent manner, and regulates GluN2B-NMDAR recycling. Furthermore, we show that the microtubule growth inhibitor kinesin KIF21B constrains NBEA dynamics and is present in the NBEA-recycling endosome-NMDAR complex. Notably, Kif21b knockout decreases NMDAR surface expression and alters social behavior in mice, consistent with reported social deficits in Nbea mutants. The influence of NBEA-KIF21B interactions on GluN2B-NMDAR local recycling may be relevant to mechanisms underlying ASD etiology.
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Affiliation(s)
- Kira V Gromova
- Department of Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Mary Muhia
- Department of Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Nicola Rothammer
- Department of Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Christine E Gee
- Department of Synaptic Physiology, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Edda Thies
- Department of Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Irina Schaefer
- Department of Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Sabrina Kress
- Department of Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Manfred W Kilimann
- Department of Molecular Neurobiology, Max-Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Olga Shevchuk
- Cellular Proteomics Research Group, Helmholtz Centre for Infection Research (HZI), Braunschweig, Germany; Leibniz Institute for Analytical Sciences, ISAS, Dortmund, Germany
| | - Thomas G Oertner
- Department of Synaptic Physiology, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Matthias Kneussel
- Department of Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH, University Medical Center Hamburg-Eppendorf, Hamburg, Germany.
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29
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Noetzli LJ, Italiano JE. Unlocking the Molecular Secrete(s) of α-Granule Biogenesis. Arterioscler Thromb Vasc Biol 2019; 38:2539-2541. [PMID: 30354241 DOI: 10.1161/atvbaha.118.311614] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Affiliation(s)
- Leila J Noetzli
- From the Brigham and Women's Hospital, Boston Children's Hospital, Harvard Medical School, Boston, MA
| | - Joseph E Italiano
- From the Brigham and Women's Hospital, Boston Children's Hospital, Harvard Medical School, Boston, MA
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30
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Sears JC, Choi WJ, Broadie K. Fragile X Mental Retardation Protein positively regulates PKA anchor Rugose and PKA activity to control actin assembly in learning/memory circuitry. Neurobiol Dis 2019; 127:53-64. [PMID: 30771457 DOI: 10.1016/j.nbd.2019.02.004] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 02/04/2019] [Indexed: 01/09/2023] Open
Abstract
Recent work shows Fragile X Mental Retardation Protein (FMRP) drives the translation of very large proteins (>2000 aa) mediating neurodevelopment. Loss of function results in Fragile X syndrome (FXS), the leading heritable cause of intellectual disability (ID) and autism spectrum disorder (ASD). Using the Drosophila FXS disease model, we discover FMRP positively regulates the translation of the very large A-Kinase Anchor Protein (AKAP) Rugose (>3000 aa), homolog of ASD-associated human Neurobeachin (NBEA). In the central brain Mushroom Body (MB) circuit, where Protein Kinase A (PKA) signaling is necessary for learning/memory, FMRP loss reduces Rugose levels and targeted FMRP overexpression elevates Rugose levels. Using a new in vivo transgenic PKA activity reporter (PKA-SPARK), we find FMRP loss reduces PKA activity in MB Kenyon cells whereas FMRP overexpression elevates PKA activity. Consistently, loss of Rugose reduces PKA activity, but Rugose overexpression has no independent effect. A well-established PKA output is regulation of F-actin cytoskeleton dynamics. In the FXS disease model, F-actin is aberrantly accumulated in MB lobes and single MB Kenyon cells. Consistently, Rugose loss results in similar F-actin accumulation. Moreover, targeted FMRP, Rugose and PKA overexpression all result in increased F-actin accumulation in the MB circuit. These findings uncover a FMRP-Rugose-PKA mechanism regulating actin cytoskeleton. This study reveals a novel FMRP mechanism controlling neuronal PKA activity, and demonstrates a shared mechanistic connection between FXS and NBEA associated ASD disease states, with a common link to PKA and F-actin misregulation in brain neural circuits. SIGNIFICANCE STATEMENT: Autism spectrum disorder (ASD) arises from a wide array of genetic lesions, and it is therefore critical to identify common underlying molecular mechanisms. Here, we link two ASD states; Neurobeachin (NBEA) associated ASD and Fragile X syndrome (FXS), the most common inherited ASD. Using established Drosophila disease models, we find Fragile X Mental Retardation Protein (FMRP) positively regulates translation of NBEA homolog Rugose, consistent with a recent advance showing FMRP promotes translation of very large proteins associated with ASD. FXS exhibits reduced cAMP induction, a potent activator of PKA, and Rugose/NBEA is a PKA anchor. Consistently, we find brain PKA activity strikingly reduced in both ASD models. We discover this pathway regulation controls actin cytoskeleton dynamics in brain neural circuits.
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Affiliation(s)
- James C Sears
- Vanderbilt Brain Institute, Departments of Biological Sciences, Vanderbilt University and Medical Center, Nashville, TN 37235, USA
| | - Woong Jae Choi
- Departments of Biological Sciences, Vanderbilt University and Medical Center, Nashville, TN 37235, USA
| | - Kendal Broadie
- Vanderbilt Brain Institute, Departments of Biological Sciences, Cell and Developmental Biology, and Pharmacology, Vanderbilt University and Medical Center, Nashville, TN 37235, USA.
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31
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Mulhern MS, Stumpel C, Stong N, Brunner HG, Bier L, Lippa N, Riviello J, Rouhl RPW, Kempers M, Pfundt R, Stegmann APA, Kukolich MK, Telegrafi A, Lehman A, Lopez-Rangel E, Houcinat N, Barth M, den Hollander N, Hoffer MJV, Weckhuysen S, Roovers J, Djemie T, Barca D, Ceulemans B, Craiu D, Lemke JR, Korff C, Mefford HC, Meyers CT, Siegler Z, Hiatt SM, Cooper GM, Bebin EM, Snijders Blok L, Veenstra-Knol HE, Baugh EH, Brilstra EH, Volker-Touw CML, van Binsbergen E, Revah-Politi A, Pereira E, McBrian D, Pacault M, Isidor B, Le Caignec C, Gilbert-Dussardier B, Bilan F, Heinzen EL, Goldstein DB, Stevens SJC, Sands TT. NBEA: Developmental disease gene with early generalized epilepsy phenotypes. Ann Neurol 2018; 84:788-795. [PMID: 30269351 DOI: 10.1002/ana.25350] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 08/27/2018] [Accepted: 09/23/2018] [Indexed: 12/14/2022]
Abstract
NBEA is a candidate gene for autism, and de novo variants have been reported in neurodevelopmental disease (NDD) cohorts. However, NBEA has not been rigorously evaluated as a disease gene, and associated phenotypes have not been delineated. We identified 24 de novo NBEA variants in patients with NDD, establishing NBEA as an NDD gene. Most patients had epilepsy with onset in the first few years of life, often characterized by generalized seizure types, including myoclonic and atonic seizures. Our data show a broader phenotypic spectrum than previously described, including a myoclonic-astatic epilepsy-like phenotype in a subset of patients. Ann Neurol 2018;84:796-803.
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Affiliation(s)
- Maureen S Mulhern
- Columbia University Medical Center, Institute for Genomic Medicine, New York, NY
| | - Constance Stumpel
- Department of Clinical Genetics and School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Nicholas Stong
- Columbia University Medical Center, Institute for Genomic Medicine, New York, NY
| | - Han G Brunner
- Department of Clinical Genetics and School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, the Netherlands.,Department of Human Genetics, Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Louise Bier
- Columbia University Medical Center, Institute for Genomic Medicine, New York, NY
| | - Natalie Lippa
- Columbia University Medical Center, Institute for Genomic Medicine, New York, NY
| | - James Riviello
- Department of Neurology, Columbia University Department of Neurology, New York, NY
| | - Rob P W Rouhl
- Department of Neurology, Maastricht University Medical Center, Maastricht, the Netherlands.,Academic Center for Epileptology, Kempenhaeghe/Maastricht University Medical Center, Maastricht, the Netherlands.,School for Mental Health and Neuroscience, Maastricht University, Maastricht, the Netherlands
| | - Marlies Kempers
- Department of Clinical Genetics, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Rolph Pfundt
- Department of Human Genetics, Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands
| | - Alexander P A Stegmann
- Department of Clinical Genetics and School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, the Netherlands
| | | | | | - Anna Lehman
- Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | | | - Elena Lopez-Rangel
- Medical Genetics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Nada Houcinat
- University of Burgundy-Franche-Comté, UMR1231 GAD, INSERM, Dijon, France.,Dijon Bourgogne University Hospital Center, Rare Diseases Reference Center "Developmental Anomalies and Informational Syndromes," Genetic Center, FHU-TRANSLAD, Dijon, France
| | - Magalie Barth
- Department of Biochemistry and Genetics, Angers University Hospital Center, Angers, France
| | | | - Mariette J V Hoffer
- Clinical Genetics, Leiden University Medical Center, Leiden, the Netherlands
| | - Sarah Weckhuysen
- Center for Molecular Neurology, VIB, Neurogenetics Group, Antwerp, Belgium.,Laboratory of Neurogenetics, Institute Born-Bunge, University of Antwerp, Antwerp, Belgium.,Department of Neurology, University Hospital Antwerp, Antwerp, Belgium
| | | | - Jolien Roovers
- Center for Molecular Neurology, VIB, Neurogenetics Group, Antwerp, Belgium.,Laboratory of Neurogenetics, Institute Born-Bunge, University of Antwerp, Antwerp, Belgium
| | - Tania Djemie
- Center for Molecular Neurology, VIB, Neurogenetics Group, Antwerp, Belgium.,Laboratory of Neurogenetics, Institute Born-Bunge, University of Antwerp, Antwerp, Belgium.,Department of Neurology, University Hospital Antwerp, Antwerp, Belgium
| | - Diana Barca
- Pediatric Neurology Clinic, Al Obregia Hospital, Carol Davila University of Medicine, Bucharest, Romania
| | - Berten Ceulemans
- Department of Pediatric Neurology, University Hospital Antwerp, Antwerp, Belgium
| | - Dana Craiu
- Pediatric Neurology Clinic, Al Obregia Hospital, Carol Davila University of Medicine, Bucharest, Romania
| | - Johannes R Lemke
- Institute for Human Genetics, University of Leipzig Hospitals and Clinics, Leipzig, Germany
| | - Christian Korff
- Pediatric Neurology Unit, Child and Adolescent Department, University Hospitals, Geneva, Switzerland
| | | | | | - Zsuzsanna Siegler
- Bethesda Children's Hospital, Department of Neurology, Budapest, Hungary
| | - Susan M Hiatt
- HudsonAlpha Institute for Biotechnology, Huntsville, AL
| | | | - E Martina Bebin
- Department of Neurology, University of Alabama at Birmingham, Birmingham, AL
| | - Lot Snijders Blok
- Department of Human Genetics, Donders Institute for Brain, Cognition, and Behavior, Radboud University Medical Center, Nijmegen, the Netherlands.,Language and Genetics Department, Max Planck Institute for Psycholinguistics, Nijmegen, the Netherlands
| | - Hermine E Veenstra-Knol
- Department of Genetics, University Medical Center Groningen, University of Groningen, Groningen, the Netherlands
| | - Evan H Baugh
- Columbia University Medical Center, Institute for Genomic Medicine, New York, NY
| | - Eva H Brilstra
- University Medical Center Utrecht, Department of Genetics, Utrecht, the Netherlands
| | | | - Ellen van Binsbergen
- University Medical Center Utrecht, Department of Genetics, Utrecht, the Netherlands
| | - Anya Revah-Politi
- Columbia University Medical Center, Institute for Genomic Medicine, New York, NY
| | - Elaine Pereira
- Division of Clinical Genetics, Department of Pediatrics, New York-Presbyterian Morgan Stanley Children's Hospital, Columbia University Medical Center, New York, NY
| | - Danielle McBrian
- Department of Neurology, Columbia University Department of Neurology, New York, NY
| | - Mathilde Pacault
- Genetics Service, Nantes University Hospital Center, Nantes, France
| | - Bertrand Isidor
- Genetics Service, Nantes University Hospital Center, Nantes, France
| | | | - Brigitte Gilbert-Dussardier
- Genetics Service, Poitiers University Hospital Center, Poitiers, France.,University of Poitiers, EA3808 NEUVACOD, Poitiers, France
| | - Frederic Bilan
- Genetics Service, Poitiers University Hospital Center, Poitiers, France.,University of Poitiers, EA3808 NEUVACOD, Poitiers, France
| | - Erin L Heinzen
- Columbia University Medical Center, Institute for Genomic Medicine, New York, NY.,Department of Pathology and Cell Biology, Columbia University Medical Center, New York, NY
| | - David B Goldstein
- Columbia University Medical Center, Institute for Genomic Medicine, New York, NY
| | - Servi J C Stevens
- Department of Clinical Genetics and School for Oncology and Developmental Biology, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Tristan T Sands
- Columbia University Medical Center, Institute for Genomic Medicine, New York, NY.,Department of Neurology, Columbia University Department of Neurology, New York, NY
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32
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The Possible Role of Neurobeachin in Extinction of Contextual Fear Memory. Sci Rep 2018; 8:13752. [PMID: 30213954 PMCID: PMC6137154 DOI: 10.1038/s41598-018-30589-1] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2018] [Accepted: 08/02/2018] [Indexed: 11/18/2022] Open
Abstract
Established fear memory becomes vulnerable to disruption after memory retrieval and extinction; this labile state is critical for inhibiting the return of fear memory. However, the labile state has a very narrow time window after retrieval, and underlying molecular mechanisms are not well known. To that end, we isolated the hippocampus immediately after fear memory retrieval and performed proteomics. We identified Neurobeachin (NBEA), an autism-related regulator of synaptic protein trafficking, to be upregulated after contextual fear memory retrieval. NBEA protein expression was rapid and transient after fear memory retrieval at the synapse. Nbea mRNA was enriched at the synapses, and the rapid induction of NBEA expression was blocked by inhibition of the mammalian target of rapamycin (mTOR)-dependent signaling pathway. Mice with cornu ammonis 1 (CA1)-specific Nbea shRNA knockdown showed normal fear acquisition and contextual fear memory but impaired extinction, suggesting an important role of Nbea in fear memory extinction processes. Consistently, Nbea heterozygotes showed normal fear acquisition and fear memory recall but showed impairment in extinction. Our data suggest that NBEA is necessary either for induction of memory lability or for the physiological process of memory extinction.
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33
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Repetto D, Brockhaus J, Rhee HJ, Lee C, Kilimann MW, Rhee J, Northoff LM, Guo W, Reissner C, Missler M. Molecular Dissection of Neurobeachin Function at Excitatory Synapses. Front Synaptic Neurosci 2018; 10:28. [PMID: 30158865 PMCID: PMC6104133 DOI: 10.3389/fnsyn.2018.00028] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2018] [Accepted: 07/26/2018] [Indexed: 11/13/2022] Open
Abstract
Spines are small protrusions from dendrites where most excitatory synapses reside. Changes in number, shape, and size of dendritic spines often reflect changes of neural activity in entire circuits or at individual synapses, making spines key structures of synaptic plasticity. Neurobeachin is a multidomain protein with roles in spine formation, postsynaptic neurotransmitter receptor targeting and actin distribution. However, the contributions of individual domains of Neurobeachin to these functions is poorly understood. Here, we used mostly live cell imaging and patch-clamp electrophysiology to monitor morphology and function of spinous synapses in primary hippocampal neurons. We demonstrate that a recombinant full-length Neurobeachin from humans can restore mushroom spine density and excitatory postsynaptic currents in neurons of Neurobeachin-deficient mice. We then probed the role of individual domains of Neurobeachin by comparing them to the full-length molecule in rescue experiments of knockout neurons. We show that the combined PH-BEACH domain complex is highly localized in spine heads, and that it is sufficient to restore normal spine density and surface targeting of postsynaptic AMPA receptors. In addition, we report that the Armadillo domain facilitates the formation of filopodia, long dendritic protrusions which often precede the development of mature spines, whereas the PKA-binding site appears as a negative regulator of filopodial extension. Thus, our results indicate that individual domains of Neurobeachin sustain important and specific roles in the regulation of spinous synapses. Since heterozygous mutations in Neurobeachin occur in autistic patients, the results will also improve our understanding of pathomechanism in neuropsychiatric disorders associated with impairments of spine function.
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Affiliation(s)
- Daniele Repetto
- Institute of Anatomy and Molecular Neurobiology, Westfälische Wilhelms-University, Münster, Germany
| | - Johannes Brockhaus
- Institute of Anatomy and Molecular Neurobiology, Westfälische Wilhelms-University, Münster, Germany
| | - Hong J Rhee
- Synaptic Physiology Group, Max-Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Chungku Lee
- Synaptic Physiology Group, Max-Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Manfred W Kilimann
- Synaptic Physiology Group, Max-Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Jeongseop Rhee
- Synaptic Physiology Group, Max-Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Lisa M Northoff
- Institute of Anatomy and Molecular Neurobiology, Westfälische Wilhelms-University, Münster, Germany
| | - Wenjia Guo
- Institute of Anatomy and Molecular Neurobiology, Westfälische Wilhelms-University, Münster, Germany
| | - Carsten Reissner
- Institute of Anatomy and Molecular Neurobiology, Westfälische Wilhelms-University, Münster, Germany
| | - Markus Missler
- Institute of Anatomy and Molecular Neurobiology, Westfälische Wilhelms-University, Münster, Germany
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34
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Wild AR, Dell'Acqua ML. Potential for therapeutic targeting of AKAP signaling complexes in nervous system disorders. Pharmacol Ther 2017; 185:99-121. [PMID: 29262295 DOI: 10.1016/j.pharmthera.2017.12.004] [Citation(s) in RCA: 49] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A common feature of neurological and neuropsychiatric disorders is a breakdown in the integrity of intracellular signal transduction pathways. Dysregulation of ion channels and receptors in the cell membrane and the enzymatic mediators that link them to intracellular effectors can lead to synaptic dysfunction and neuronal death. However, therapeutic targeting of these ubiquitous signaling elements can lead to off-target side effects due to their widespread expression in multiple systems of the body. A-kinase anchoring proteins (AKAPs) are multivalent scaffolding proteins that compartmentalize a diverse range of receptor and effector proteins to streamline signaling within nanodomain signalosomes. A number of essential neurological processes are known to critically depend on AKAP-directed signaling and an understanding of the role AKAPs play in nervous system disorders has emerged in recent years. Selective targeting of AKAP protein-protein interactions may be a means to uncouple pathologically active signaling pathways in neurological disorders with a greater degree of specificity. In this review we will discuss the role of AKAPs in both regulating normal nervous system function and dysfunction associated with disease, and the potential for therapeutic targeting of AKAP signaling complexes.
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Affiliation(s)
- Angela R Wild
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045, USA
| | - Mark L Dell'Acqua
- Department of Pharmacology, University of Colorado School of Medicine, Aurora, CO 80045, USA.
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35
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Marsh AJ, Michel JC, Adke AP, Heckman EL, Miller AC. Asymmetry of an Intracellular Scaffold at Vertebrate Electrical Synapses. Curr Biol 2017; 27:3561-3567.e4. [PMID: 29103941 PMCID: PMC5698123 DOI: 10.1016/j.cub.2017.10.011] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2017] [Revised: 09/27/2017] [Accepted: 10/03/2017] [Indexed: 12/25/2022]
Abstract
Neuronal synaptic connections are either chemical or electrical, and these two types of synapses work together to dynamically define neural circuit function [1]. Although we know a great deal about the molecules that support chemical synapse formation and function, we know little about the macromolecular complexes that regulate electrical synapses. Electrical synapses are created by gap junction (GJ) channels that provide direct ionic communication between neurons [2]. Although they are often molecularly and functionally symmetric, recent work has found that pre- and postsynaptic neurons can contribute different GJ-forming proteins, creating molecularly asymmetric channels that are correlated with functional asymmetry at the synapse [3, 4]. Associated with the GJs are structures observed by electron microscopy termed the electrical synapse density (ESD) [5]. The ESD has been suggested to be critical for the formation and function of the electrical synapse, yet the biochemical makeup of these structures is poorly understood. Here we find that electrical synapse formation in vivo requires an intracellular scaffold called Tight Junction Protein 1b (Tjp1b). Tjp1b is localized to the electrical synapse, where it is required for the stabilization of the GJs and for electrical synapse function. Strikingly, we find that Tjp1b protein localizes and functions asymmetrically, exclusively on the postsynaptic side of the synapse. Our findings support a novel model of electrical synapse molecular asymmetry at the level of an intracellular scaffold that is required for building the electrical synapse. We propose that such ESD asymmetries could be used by all nervous systems to support molecular and functional asymmetries at electrical synapses.
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Affiliation(s)
- Audrey J Marsh
- University of Oregon, Institute of Neuroscience, Department of Biology, 1254 University of Oregon, Eugene, OR 97403, USA
| | - Jennifer Carlisle Michel
- University of Oregon, Institute of Neuroscience, Department of Biology, 1254 University of Oregon, Eugene, OR 97403, USA
| | - Anisha P Adke
- University of Oregon, Institute of Neuroscience, Department of Biology, 1254 University of Oregon, Eugene, OR 97403, USA
| | - Emily L Heckman
- University of Oregon, Institute of Neuroscience, Department of Biology, 1254 University of Oregon, Eugene, OR 97403, USA
| | - Adam C Miller
- University of Oregon, Institute of Neuroscience, Department of Biology, 1254 University of Oregon, Eugene, OR 97403, USA.
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36
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Vogl C, Butola T, Haag N, Hausrat TJ, Leitner MG, Moutschen M, Lefèbvre PP, Speckmann C, Garrett L, Becker L, Fuchs H, Hrabe de Angelis M, Nietzsche S, Kessels MM, Oliver D, Kneussel M, Kilimann MW, Strenzke N. The BEACH protein LRBA is required for hair bundle maintenance in cochlear hair cells and for hearing. EMBO Rep 2017; 18:2015-2029. [PMID: 28893864 DOI: 10.15252/embr.201643689] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 07/27/2017] [Accepted: 08/07/2017] [Indexed: 12/15/2022] Open
Abstract
Lipopolysaccharide-responsive beige-like anchor protein (LRBA) belongs to the enigmatic class of BEACH domain-containing proteins, which have been attributed various cellular functions, typically involving intracellular protein and membrane transport processes. Here, we show that LRBA deficiency in mice leads to progressive sensorineural hearing loss. In LRBA knockout mice, inner and outer hair cell stereociliary bundles initially develop normally, but then partially degenerate during the second postnatal week. LRBA deficiency is associated with a reduced abundance of radixin and Nherf2, two adaptor proteins, which are important for the mechanical stability of the basal taper region of stereocilia. Our data suggest that due to the loss of structural integrity of the central parts of the hair bundle, the hair cell receptor potential is reduced, resulting in a loss of cochlear sensitivity and functional loss of the fraction of spiral ganglion neurons with low spontaneous firing rates. Clinical data obtained from two human patients with protein-truncating nonsense or frameshift mutations suggest that LRBA deficiency may likewise cause syndromic sensorineural hearing impairment in humans, albeit less severe than in our mouse model.
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Affiliation(s)
- Christian Vogl
- Institute for Auditory Neuroscience and InnerEarLab, University Medical Center Göttingen, Göttingen, Germany
| | - Tanvi Butola
- Institute for Auditory Neuroscience and InnerEarLab, University Medical Center Göttingen, Göttingen, Germany.,Synaptic Nanophysiology Group, Max-Planck-Institute for Biophysical Chemistry Göttingen, Göttingen, Germany
| | - Natja Haag
- Institute for Biochemistry I, University Hospital Jena, Jena, Germany
| | - Torben J Hausrat
- Department for Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Michael G Leitner
- Department of Physiology, Philipps University Marburg, Marburg, Germany
| | - Michel Moutschen
- Department of Immunology and Infectious Diseases, University of Liège CHU Liège, Liège, Belgium
| | - Philippe P Lefèbvre
- Department of Otorhinolaryngology, University of Liège CHU Liège, Liège, Belgium
| | - Carsten Speckmann
- Division of Pediatric Hematology and Oncology, Center for Chronic Immunodeficiency and Department of Pediatrics and Adolescent Medicine, Medical Centre, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Lillian Garrett
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München German Research Center for Environmental Health, Neuherberg, Germany.,Institute of Developmental Genetics, Helmholtz Zentrum München German Research Center for Environmental Health, Neuherberg, Germany
| | - Lore Becker
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München German Research Center for Environmental Health, Neuherberg, Germany
| | - Helmut Fuchs
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München German Research Center for Environmental Health, Neuherberg, Germany
| | - Martin Hrabe de Angelis
- German Mouse Clinic, Institute of Experimental Genetics, Helmholtz Zentrum München German Research Center for Environmental Health, Neuherberg, Germany.,Chair of Experimental Genetics, School of Life Science Weihenstephan, Technische Universität München, München, Germany.,German Center for Diabetes Research (DZD), Neuherberg, Germany
| | | | - Michael M Kessels
- Institute for Biochemistry I, University Hospital Jena, Jena, Germany
| | - Dominik Oliver
- Department of Physiology, Philipps University Marburg, Marburg, Germany
| | - Matthias Kneussel
- Department for Molecular Neurogenetics, Center for Molecular Neurobiology, ZMNH University Medical Center Hamburg Eppendorf, Hamburg, Germany
| | - Manfred W Kilimann
- Institute for Auditory Neuroscience, University Medical Center Göttingen, Göttingen, Germany.,Department of Molecular Neurobiology, Max Planck Institute for Experimental Medicine, Göttingen, Germany
| | - Nicola Strenzke
- Auditory Systems Physiology Group Department of Otolaryngology University Medical Center Göttingen, Göttingen, Germany
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37
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Kurtenbach S, Gießl A, Strömberg S, Kremers J, Atorf J, Rasche S, Neuhaus EM, Hervé D, Brandstätter JH, Asan E, Hatt H, Kilimann MW. The BEACH Protein LRBA Promotes the Localization of the Heterotrimeric G-protein G olf to Olfactory Cilia. Sci Rep 2017; 7:8409. [PMID: 28814779 PMCID: PMC5559528 DOI: 10.1038/s41598-017-08543-4] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2017] [Accepted: 07/10/2017] [Indexed: 02/07/2023] Open
Abstract
BEACH domain proteins are involved in membrane protein traffic and human diseases, but their molecular mechanisms are not understood. The BEACH protein LRBA has been implicated in immune response and cell proliferation, and human LRBA mutations cause severe immune deficiency. Here, we report a first functional and molecular phenotype outside the immune system of LRBA-knockout mice: compromised olfaction, manifesting in reduced electro-olfactogram response amplitude, impaired food-finding efficiency, and smaller olfactory bulbs. LRBA is prominently expressed in olfactory and vomeronasal chemosensory neurons of wild-type mice. Olfactory impairment in the LRBA-KO is explained by markedly reduced concentrations (20–40% of wild-type levels) of all three subunits αolf, β1 and γ13 of the olfactory heterotrimeric G-protein, Golf, in the sensory cilia of olfactory neurons. In contrast, cilia morphology and the concentrations of many other proteins of olfactory cilia are not or only slightly affected. LRBA is also highly expressed in photoreceptor cells, another cell type with a specialized sensory cilium and heterotrimeric G-protein-based signalling; however, visual function appeared unimpaired by the LRBA-KO. To our knowledge, this is the first observation that a BEACH protein is required for the efficient subcellular localization of a lipid-anchored protein, and of a ciliary protein.
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Affiliation(s)
- Stefan Kurtenbach
- Department of Cell Physiology, Ruhr University Bochum, D-44780, Bochum, Germany
| | - Andreas Gießl
- Department of Biology, Animal Physiology, University of Erlangen-Nürnberg, D-91058, Erlangen, Germany
| | - Siv Strömberg
- Department of Neuroscience, Uppsala University, S-75124, Uppsala, Sweden
| | - Jan Kremers
- Department of Ophthalmology, University Hospital Erlangen, D-91054, Erlangen, Germany.,Department of Anatomy II, Friedrich-Alexander University Erlangen-Nürnberg, D-91054, Erlangen, Germany
| | - Jenny Atorf
- Department of Ophthalmology, University Hospital Erlangen, D-91054, Erlangen, Germany
| | - Sebastian Rasche
- Department of Cell Physiology, Ruhr University Bochum, D-44780, Bochum, Germany
| | - Eva M Neuhaus
- Department of Pharmacology and Toxikology, University Hospital Jena, D-07747, Jena, Germany
| | - Denis Hervé
- Inserm UMR-S839, Institut du Fer a Moulin, Universite Pierre et Marie Curie, F-75005, Paris, France
| | | | - Esther Asan
- Institute of Anatomy and Cell Biology, University of Würzburg, D-97070, Würzburg, Germany
| | - Hanns Hatt
- Department of Cell Physiology, Ruhr University Bochum, D-44780, Bochum, Germany
| | - Manfred W Kilimann
- Department of Neuroscience, Uppsala University, S-75124, Uppsala, Sweden. .,Department of Molecular Neurobiology, Max Planck Institute for Experimental Medicine, D-37075, Göttingen, Germany.
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38
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Schmeisser K, Parker JA. Worms on the spectrum - C. elegans models in autism research. Exp Neurol 2017; 299:199-206. [PMID: 28434869 DOI: 10.1016/j.expneurol.2017.04.007] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2017] [Revised: 04/10/2017] [Accepted: 04/18/2017] [Indexed: 12/13/2022]
Abstract
The small non-parasitic nematode Caenorhabditis elegans is widely used in neuroscience thanks to its well-understood development and lineage of the nervous system. Furthermore, C. elegans has been used to model many human developmental and neurological conditions to better understand disease mechanisms and identify potential therapeutic strategies. Autism spectrum disorder (ASD) is the most prevalent of all neurodevelopmental disorders, and the C. elegans system may provide opportunities to learn more about this complex disorder. Since basic cell biology and biochemistry of the C. elegans nervous system is generally very similar to mammals, cellular or molecular phenotypes can be investigated, along with a repertoire of behaviours. For instance, worms have contributed greatly to the understanding of mechanisms underlying mutations in genes coding for synaptic proteins such as neuroligin and neurexin. Using worms to model neurodevelopmental disorders like ASD is an emerging topic that harbours great, untapped potential. This review summarizes the numerous contributions of C. elegans to the field of neurodevelopment and introduces the nematode system as a potential research tool to study essential roles of genes associated with ASD.
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Affiliation(s)
- Kathrin Schmeisser
- Centre de Recherche du Centre Hospitalier de l'Université de Montreál (CRCHUM), 900 St-Denis Street, Montreál, Queb́ec H2X 0A9, Canada
| | - J Alex Parker
- Centre de Recherche du Centre Hospitalier de l'Université de Montreál (CRCHUM), 900 St-Denis Street, Montreál, Queb́ec H2X 0A9, Canada; Department of Neuroscience, Université de Montreál, 2960 Chemin de la Tour, Montreál, Queb́ec H3T 1J4, Canada.
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39
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Miller AC, Pereda AE. The electrical synapse: Molecular complexities at the gap and beyond. Dev Neurobiol 2017; 77:562-574. [PMID: 28170151 DOI: 10.1002/dneu.22484] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2016] [Revised: 01/04/2017] [Accepted: 01/04/2017] [Indexed: 12/21/2022]
Abstract
Gap junctions underlie electrical synaptic transmission between neurons. Generally perceived as simple intercellular channels, "electrical synapses" have demonstrated to be more functionally sophisticated and structurally complex than initially anticipated. Electrical synapses represent an assembly of multiple molecules, consisting of channels, adhesion complexes, scaffolds, regulatory machinery, and trafficking proteins, all required for their proper function and plasticity. Additionally, while electrical synapses are often viewed as strictly symmetric structures, emerging evidence has shown that some components forming electrical synapses can be differentially distributed at each side of the junction. We propose that the molecular complexity and asymmetric distribution of proteins at the electrical synapse provides rich potential for functional diversity. © 2016 Wiley Periodicals, Inc. Develop Neurobiol 77: 562-574, 2017.
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Affiliation(s)
- Adam C Miller
- Institute of Neuroscience, Department of Biology, University of Oregon, Eugene, Oregon
| | - Alberto E Pereda
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York
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Steffens A, Jakoby M, Hülskamp M. Physical, Functional and Genetic Interactions between the BEACH Domain Protein SPIRRIG and LIP5 and SKD1 and Its Role in Endosomal Trafficking to the Vacuole in Arabidopsis. FRONTIERS IN PLANT SCIENCE 2017; 8:1969. [PMID: 29209342 PMCID: PMC5701936 DOI: 10.3389/fpls.2017.01969] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 11/01/2017] [Indexed: 05/19/2023]
Abstract
Beige and Chediak Higashi (BEACH) domain-containing proteins (BDCPs) are facilitators of membrane-dependent cellular processes in eukaryotes. Mutations in BDCPs cause malfunctions of endosomal compartments in various cell types. Recently, the molecular analysis of the BDCP homolog gene SPIRRIG (SPI) has revealed a molecular function in P-bodies and the regulation of RNA stability. We therefore aimed to analyze, whether SPI has also a role in membrane-dependent processes. In this study, we show that SPI physically interacts with endosomal sorting complex required for transport associated ATPase Suppressor of K+-transport growth defect1 (SKD1) and its positive regulator, LYST Interacting Protein 5 (LIP5) and report genetic interactions between SPI and SKD1 and LIP5. We further show that the endosomal transport route of soluble proteins to the lytic vacuole is disturbed in spi lip5 double mutants but not in the single mutants. These vacuolar transport defects were suppressed by additional expression of SKD1. Our results indicate that the BEACH domain protein SPI has in addition to a role in P-bodies a function in endosomal transport routes.
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Patak J, Zhang-James Y, Faraone SV. Endosomal system genetics and autism spectrum disorders: A literature review. Neurosci Biobehav Rev 2016; 65:95-112. [PMID: 27048963 PMCID: PMC4866511 DOI: 10.1016/j.neubiorev.2016.03.022] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/28/2016] [Revised: 03/25/2016] [Accepted: 03/27/2016] [Indexed: 01/01/2023]
Abstract
Autism spectrum disorders (ASDs) are a group of debilitating neurodevelopmental disorders thought to have genetic etiology, due to their high heritability. The endosomal system has become increasingly implicated in ASD pathophysiology. In an attempt to summarize the association between endosomal system genes and ASDs we performed a systematic review of the literature. We searched PubMed for relevant articles. Simons Foundation Autism Research Initiative (SFARI) gene database was used to exclude articles regarding genes with less than minimal evidence for association with ASDs. Our search retained 55 articles reviewed in two categories: genes that regulate and genes that are regulated by the endosomal system. Our review shows that the endosomal system is a novel pathway implicated in ASDs as well as other neuropsychiatric disorders. It plays a central role in aspects of cellular physiology on which neurons and glial cells are particularly reliant, due to their unique metabolic and functional demands. The system shows potential for biomarkers and pharmacological intervention and thus more research into this pathway is warranted.
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Affiliation(s)
- Jameson Patak
- Dept. of Neuroscience and Physiology, Upstate Medical University, Syracuse, NY, United States.
| | - Yanli Zhang-James
- Dept of Psychiatry, Upstate Medical University, Syracuse, NY, United States.
| | - Stephen V Faraone
- Dept. of Neuroscience and Physiology, Upstate Medical University, Syracuse, NY, United States; Dept of Psychiatry, Upstate Medical University, Syracuse, NY, United States; K.G. Jebsen Centre for Neuropsychiatric Disorders, Department of Biomedicine, University of Bergen, Bergen, Norway.
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Impairments in dendrite morphogenesis as etiology for neurodevelopmental disorders and implications for therapeutic treatments. Neurosci Biobehav Rev 2016; 68:946-978. [PMID: 27143622 DOI: 10.1016/j.neubiorev.2016.04.008] [Citation(s) in RCA: 58] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 04/13/2016] [Accepted: 04/13/2016] [Indexed: 02/08/2023]
Abstract
Dendrite morphology is pivotal for neural circuitry functioning. While the causative relationship between small-scale dendrite morphological abnormalities (shape, density of dendritic spines) and neurodevelopmental disorders is well established, such relationship remains elusive for larger-scale dendrite morphological impairments (size, shape, branching pattern of dendritic trees). Here, we summarize published data on dendrite morphological irregularities in human patients and animal models for neurodevelopmental disorders, with focus on autism and schizophrenia. We next discuss high-risk genes for these disorders and their role in dendrite morphogenesis. We finally overview recent developments in therapeutic attempts and we discuss how they relate to dendrite morphology. We find that both autism and schizophrenia are accompanied by dendritic arbor morphological irregularities, and that majority of their high-risk genes regulate dendrite morphogenesis. Thus, we present a compelling argument that, along with smaller-scale morphological impairments in dendrites (spines and synapse), irregularities in larger-scale dendrite morphology (arbor shape, size) may be an important part of neurodevelopmental disorders' etiology. We suggest that this should not be ignored when developing future therapeutic treatments.
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Tuand K, Stijnen P, Volders K, Declercq J, Nuytens K, Meulemans S, Creemers J. Nuclear Localization of the Autism Candidate Gene Neurobeachin and Functional Interaction with the NOTCH1 Intracellular Domain Indicate a Role in Regulating Transcription. PLoS One 2016; 11:e0151954. [PMID: 26999814 PMCID: PMC4801420 DOI: 10.1371/journal.pone.0151954] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Accepted: 03/07/2016] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Neurobeachin (NBEA) is an autism spectrum disorders (ASD) candidate gene. NBEA deficiency affects regulated secretion, receptor trafficking, synaptic architecture and protein kinase A (PKA)-mediated phosphorylation. NBEA is a large multidomain scaffolding protein. From N- to C-terminus, NBEA has a concanavalin A-like lectin domain flanked by armadillo repeats (ACA), an A-kinase anchoring protein domain that can bind to PKA, a domain of unknown function (DUF1088) and a BEACH domain, preceded by a pleckstrin homology-like domain and followed by WD40 repeats (PBW). Although most of these domains mediate protein-protein interactions, no interaction screen has yet been performed. METHODS Yeast two-hybrid screens with the ACA and PBW domain modules of NBEA gave a list of interaction partners, which were analyzed for Gene Ontology (GO) enrichment. Neuro-2a cells were used for confocal microscopy and nuclear extraction analysis. NOTCH-mediated transcription was studied with luciferase reporter assays and qRT-PCR, combined with NBEA knockdown or overexpression. RESULTS Both domain modules showed a GO enrichment for the nucleus. PBW almost exclusively interacted with transcription regulators, while ACA interacted with a number of PKA substrates. NBEA was partially localized in the nucleus of Neuro-2a cells, albeit much less than in the cytoplasm. A nuclear localization signal was found in the DUF1088 domain, which was shown to contribute to the nuclear localization of an EGFP-DPBW fusion protein. Yeast two-hybrid identified the Notch1 intracellular domain as a physical interactor of the PBW domain and a role for NBEA as a negative regulator in Notch-mediated transcription was demonstrated. CONCLUSION Defining novel interaction partners of conserved NBEA domain modules identified a role for NBEA as transcriptional regulator in the nucleus. The physical interaction of NBEA with NOTCH1 is most relevant for ASD pathogenesis because NOTCH signaling is essential for neural development.
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Affiliation(s)
- Krizia Tuand
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Leuven Autism Research consortium (LAuRes), KU Leuven, Leuven, Belgium
| | - Pieter Stijnen
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Karolien Volders
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Leuven Autism Research consortium (LAuRes), KU Leuven, Leuven, Belgium
| | | | - Kim Nuytens
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- Leuven Autism Research consortium (LAuRes), KU Leuven, Leuven, Belgium
| | | | - John Creemers
- Department of Human Genetics, KU Leuven, Leuven, Belgium
- * E-mail:
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Raslan Z, Aburima A, Naseem KM. The Spatiotemporal Regulation of cAMP Signaling in Blood Platelets-Old Friends and New Players. Front Pharmacol 2015; 6:266. [PMID: 26617518 PMCID: PMC4639615 DOI: 10.3389/fphar.2015.00266] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Accepted: 10/26/2015] [Indexed: 11/22/2022] Open
Abstract
Atherothrombosis, the pathology underlying numerous cardiovascular diseases, is a major cause of death globally. Hyperactive blood platelets play a key role in the atherothrombotic process through the release of inflammatory mediators and formation of thrombi. In healthy blood vessels, excessive platelet activation is restricted by endothelial-derived prostacyclin (PGI2) through cyclic adenosine-5′-monophosphate (cAMP) and protein kinase A (PKA)-dependent mechanisms. Elevation in intracellular cAMP is associated with the control of a number of distinct platelet functions including actin polymerisation, granule secretion, calcium mobilization and integrin activation. Unfortunately, in atherosclerotic disease the protective effects of cAMP are compromised, which may contribute to pathological thrombosis. The cAMP signaling network in platelets is highly complex with the presence of multiple isoforms of adenylyl cyclase (AC), PKA, and phosphodiesterases (PDEs). However, a precise understanding of the relationship between specific AC, PKA, and PDE isoforms, and how individual signaling substrates are targeted to control distinct platelet functions is still lacking. In other cells types, compartmentalisation of cAMP signaling has emerged as a key mechanism to allow precise control of specific cell functions. A-kinase anchoring proteins (AKAPs) play an important role in this spatiotemporal regulation of cAMP signaling networks. Evidence of AKAP-mediated compartmentalisation of cAMP signaling in blood platelets has begun to emerge and is providing new insights into the regulation of platelet function. Dissecting the mechanisms that allow cAMP to control excessive platelet activity without preventing effective haemostasis may unleash the possibility of therapeutic targeting of the pathway to control unwanted platelet activity.
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Affiliation(s)
- Zaher Raslan
- Centre for Cardiovascular and Metabolic Research, Hull-York Medical School, University of Hull , Hull, UK
| | - Ahmed Aburima
- Centre for Cardiovascular and Metabolic Research, Hull-York Medical School, University of Hull , Hull, UK
| | - Khalid M Naseem
- Centre for Cardiovascular and Metabolic Research, Hull-York Medical School, University of Hull , Hull, UK
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Abstract
There are two main modalities of communication between neurons, known as electrical and chemical synaptic transmission. Despite striking differences in their underlying mechanisms, new evidence suggests that the formation of electrically and chemically mediated synapses is under common regulatory processes.
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Affiliation(s)
- Alberto E Pereda
- Dominick P. Purpura Department of Neuroscience, Albert Einstein College of Medicine, Bronx, New York, USA.
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Peng M, Aye TT, Snel B, van Breukelen B, Scholten A, Heck AJR. Spatial Organization in Protein Kinase A Signaling Emerged at the Base of Animal Evolution. J Proteome Res 2015; 14:2976-87. [DOI: 10.1021/acs.jproteome.5b00370] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Mao Peng
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
- Netherlands Proteomics Centre, Padualaan
8, 3584 CH Utrecht, The Netherlands
- Department
of Toxicogenomics, Maastricht University, 6200 MD Maastricht, The Netherlands
| | - Thin Thin Aye
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
- Netherlands Proteomics Centre, Padualaan
8, 3584 CH Utrecht, The Netherlands
| | - Berend Snel
- Theoretical
Biology and Bioinformatics, Department of Biology, Faculty of Science, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
| | - Bas van Breukelen
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
- Netherlands Proteomics Centre, Padualaan
8, 3584 CH Utrecht, The Netherlands
| | - Arjen Scholten
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
- Netherlands Proteomics Centre, Padualaan
8, 3584 CH Utrecht, The Netherlands
| | - Albert J. R. Heck
- Biomolecular
Mass Spectrometry and Proteomics, Bijvoet Center for Biomolecular
Research and Utrecht Institute for Pharmaceutical Sciences, Utrecht University, Padualaan 8, 3584 CH Utrecht, The Netherlands
- Netherlands Proteomics Centre, Padualaan
8, 3584 CH Utrecht, The Netherlands
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Neurobeachin Regulates Glutamate- and GABA-Receptor Targeting to Synapses via Distinct Pathways. Mol Neurobiol 2015; 53:2112-23. [PMID: 25934101 PMCID: PMC4823379 DOI: 10.1007/s12035-015-9164-8] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2014] [Accepted: 03/27/2015] [Indexed: 01/25/2023]
Abstract
Neurotransmission and synaptic strength depend on expression of post-synaptic receptors on the cell surface. Post-translational modification of receptors, trafficking to the synapse through the secretory pathway, and subsequent insertion into the synapse involves interaction of the receptor with A-kinase anchor proteins (AKAPs) and scaffolding proteins. Neurobeachin (Nbea), a brain specific AKAP, is required for synaptic surface expression of both glutamate and GABA receptors. Here, we investigated the role of Nbea-dependent targeting of postsynaptic receptors by studying Nbea interaction with synapse-associated protein 102 (SAP102/Dlg3) and protein kinase A subunit II (PKA II). A Nbea mutant lacking the PKA binding domain showed a similar distribution as wild-type Nbea in Nbea null neurons and partially restored GABA receptor surface expression. To understand the relevance of Nbea interaction with SAP102, we analysed SAP102 null mutant mice. Nbea levels were reduced by ~80 % in SAP102 null mice, but glutamatergic receptor expression was normal. A single-point mutation in the pleckstrin homology domain of Nbea (E2218R) resulted in loss of binding with SAP102. When expressed in Nbea null neurons, this mutant fully restored GABA receptor surface expression, but not glutamate receptor expression. Our results suggest that the PKA-binding domain is not essential for Nbea’s role in receptor targeting and that Nbea targets glutamate and GABA receptors to the synapse via distinct molecular pathways by interacting with specific effector proteins.
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48
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Teh OK, Hatsugai N, Tamura K, Fuji K, Tabata R, Yamaguchi K, Shingenobu S, Yamada M, Hasebe M, Sawa S, Shimada T, Hara-Nishimura I. BEACH-domain proteins act together in a cascade to mediate vacuolar protein trafficking and disease resistance in Arabidopsis. MOLECULAR PLANT 2015; 8:389-98. [PMID: 25618824 DOI: 10.1016/j.molp.2014.11.015] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/19/2014] [Revised: 10/21/2014] [Accepted: 11/12/2014] [Indexed: 05/08/2023]
Abstract
Membrane trafficking to the protein storage vacuole (PSV) is a specialized process in seed plants. However, this trafficking mechanism to PSV is poorly understood. Here, we show that three types of Beige and Chediak-Higashi (BEACH)-domain proteins contribute to both vacuolar protein transport and effector-triggered immunity (ETI). We screened a green fluorescent seed (GFS) library of Arabidopsis mutants with defects in vesicle trafficking and isolated two allelic mutants gfs3 and gfs12 with a defect in seed protein transport to PSV. The gene responsible for the mutant phenotype was found to encode a putative protein belonging to group D of BEACH-domain proteins, which possess kinase domains. Disruption of other BEACH-encoding loci in the gfs12 mutant showed that BEACH homologs acted in a cascading manner for PSV trafficking. The epistatic genetic interactions observed among BEACH homologs were also found in the ETI responses of the gfs12 and gfs12 bchb-1 mutants, which showed elevated avirulent bacterial growth. The GFS12 kinase domain interacted specifically with the pleckstrin homology domain of BchC1. These results suggest that a cascade of multiple BEACH-domain proteins contributes to vacuolar protein transport and plant defense.
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Affiliation(s)
- Ooi-kock Teh
- Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Noriyuki Hatsugai
- Research Centre for Cooperative Projects, Hokkaido University, Kita-ku, Sapporo 060-8638, Japan
| | - Kentaro Tamura
- Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Kentaro Fuji
- Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
| | - Ryo Tabata
- Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
| | - Katsushi Yamaguchi
- Functional Genomics Facility, National Institute for Basic Biology, Okazaki 444-8585, Japan
| | - Shuji Shingenobu
- Functional Genomics Facility, National Institute for Basic Biology, Okazaki 444-8585, Japan
| | - Masashi Yamada
- Department of Biology and IGSP Center for Systems Biology, Duke University, Durham, NC 27708, USA
| | - Mitsuyasu Hasebe
- Division of Evolutionary Biology, National Institute for Basic Biology, Okazaki 444-8585, Japan; School of Life Science, The Graduate University for Advanced Studies, Okazaki 444-8585, Japan
| | - Shinichiro Sawa
- Graduate School of Science and Technology, Kumamoto University, Kumamoto 860-8555, Japan
| | - Tomoo Shimada
- Graduate School of Science, Kyoto University, Sakyo-ku, Kyoto 606-8502, Japan
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Kitagishi Y, Minami A, Nakanishi A, Ogura Y, Matsuda S. Neuron membrane trafficking and protein kinases involved in autism and ADHD. Int J Mol Sci 2015; 16:3095-115. [PMID: 25647412 PMCID: PMC4346882 DOI: 10.3390/ijms16023095] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2014] [Accepted: 01/19/2015] [Indexed: 11/16/2022] Open
Abstract
A brain-enriched multi-domain scaffolding protein, neurobeachin has been identified as a candidate gene for autism patients. Mutations in the synaptic adhesion protein cell adhesion molecule 1 (CADM1) are also associated with autism spectrum disorder, a neurodevelopmental disorder of uncertain molecular origin. Potential roles of neurobeachin and CADM1 have been suggested to a function of vesicle transport in endosomal trafficking. It seems that protein kinase B (AKT) and cyclic adenosine monophosphate (cAMP)-dependent protein kinase A (PKA) have key roles in the neuron membrane trafficking involved in the pathogenesis of autism. Attention deficit hyperactivity disorder (ADHD) is documented to dopaminergic insufficiencies, which is attributed to synaptic dysfunction of dopamine transporter (DAT). AKT is also essential for the DAT cell-surface redistribution. In the present paper, we summarize and discuss the importance of several protein kinases that regulate the membrane trafficking involved in autism and ADHD, suggesting new targets for therapeutic intervention.
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Affiliation(s)
- Yasuko Kitagishi
- Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
| | - Akari Minami
- Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
| | - Atsuko Nakanishi
- Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
| | - Yasunori Ogura
- Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
| | - Satoru Matsuda
- Department of Food Science and Nutrition, Nara Women's University, Kita-Uoya Nishimachi, Nara 630-8506, Japan.
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50
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Miller AC, Voelker LH, Shah AN, Moens CB. Neurobeachin is required postsynaptically for electrical and chemical synapse formation. Curr Biol 2014; 25:16-28. [PMID: 25484298 DOI: 10.1016/j.cub.2014.10.071] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2014] [Revised: 10/27/2014] [Accepted: 10/28/2014] [Indexed: 02/03/2023]
Abstract
BACKGROUND Neural networks and their function are defined by synapses, which are adhesions specialized for intercellular communication that can be either chemical or electrical. At chemical synapses, transmission between neurons is mediated by neurotransmitters, whereas at electrical synapses, direct ionic and metabolic coupling occur via gap junctions between neurons. The molecular pathways required for electrical synaptogenesis are not well understood, and whether they share mechanisms of formation with chemical synapses is not clear. RESULTS Here, using a forward genetic screen in zebrafish, we find that the autism-associated gene neurobeachin (nbea), which encodes a BEACH-domain-containing protein implicated in endomembrane trafficking, is required for both electrical and chemical synapse formation. Additionally, we find that nbea is dispensable for axonal formation and early dendritic outgrowth but is required to maintain dendritic complexity. These synaptic and morphological defects correlate with deficiencies in behavioral performance. Using chimeric animals in which individually identifiable neurons are either mutant or wild-type, we find that Nbea is necessary and sufficient autonomously in the postsynaptic neuron for both synapse formation and dendritic arborization. CONCLUSIONS Our data identify a surprising link between electrical and chemical synapse formation and show that Nbea acts as a critical regulator in the postsynaptic neuron for the coordination of dendritic morphology with synaptogenesis.
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Affiliation(s)
- Adam C Miller
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA 98109, USA.
| | - Lisa H Voelker
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA 98109, USA; Molecular and Cellular Biology, University of Washington, 1959 NE Pacific Street, Seattle, WA 98195, USA
| | - Arish N Shah
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA 98109, USA
| | - Cecilia B Moens
- Division of Basic Sciences, Fred Hutchinson Cancer Research Center, 1100 Fairview Avenue N, Seattle, WA 98109, USA
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