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Gonzalez Ramirez C, Salvador SG, Patel RKR, Clark S, Miller NW, James LM, Ringelberg NW, Simon JM, Bennett J, Amaral DG, Burette AC, Philpot BD. Regional and cellular organization of the autism-associated protein UBE3A/E6AP and its antisense transcript in the brain of the developing rhesus monkey. Front Neuroanat 2024; 18:1410791. [PMID: 38873093 PMCID: PMC11169893 DOI: 10.3389/fnana.2024.1410791] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2024] [Accepted: 05/17/2024] [Indexed: 06/15/2024] Open
Abstract
Angelman syndrome (AS) is a neurogenetic disorder caused by mutations or deletions in the maternally-inherited UBE3A allele, leading to a loss of UBE3A protein expression in neurons. The paternally-inherited UBE3A allele is epigenetically silenced in neurons during development by a noncoding transcript (UBE3A-ATS). The absence of neuronal UBE3A results in severe neurological symptoms, including speech and language impairments, intellectual disability, and seizures. While no cure exists, therapies aiming to restore UBE3A function-either by gene addition or by targeting UBE3A-ATS-are under development. Progress in developing these treatments relies heavily on inferences drawn from mouse studies about the function of UBE3A in the human brain. To aid translational efforts and to gain an understanding of UBE3A and UBE3A-ATS biology with greater relevance to human neurodevelopmental contexts, we investigated UBE3A and UBE3A-ATS expression in the developing brain of the rhesus macaque, a species that exhibits complex social behaviors, resembling aspects of human behavior to a greater degree than mice. Combining immunohistochemistry and in situ hybridization, we mapped UBE3A and UBE3A-ATS regional and cellular expression in normal prenatal, neonatal, and adolescent rhesus macaque brains. We show that key hallmarks of UBE3A biology, well-known in rodents, are also present in macaques, and suggest paternal UBE3A silencing in neurons-but not glial cells-in the macaque brain, with onset between gestational day 48 and 100. These findings support proposals that early-life, perhaps even prenatal, intervention is optimal for overcoming the maternal allele loss of UBE3A linked to AS.
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Affiliation(s)
- Chavely Gonzalez Ramirez
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Sarah G. Salvador
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Ridthi Kartik Rekha Patel
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Sarah Clark
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Noah W. Miller
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Lucas M. James
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Nicholas W. Ringelberg
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Jeremy M. Simon
- Department of Biostatistics, Harvard T.H. Chan School of Public Health, Boston, MA, United States
- Department of Data Science, Dana-Farber Cancer Institute, Boston, MA, United States
| | - Jeffrey Bennett
- Department of Psychiatry and Behavioral Sciences, MIND Institute, Davis, CA, United States
- California National Primate Research Center, University of California, Davis, CA, United States
| | - David G. Amaral
- Department of Psychiatry and Behavioral Sciences, MIND Institute, Davis, CA, United States
- California National Primate Research Center, University of California, Davis, CA, United States
| | - Alain C. Burette
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
| | - Benjamin D. Philpot
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
- Carolina Institute for Developmental Disabilities, University of North Carolina at Chapel Hill, Chapel Hill, NC, United States
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McCormick LE, Evans EB, Barker NK, Herring LE, Diering GH, Gupton SL. The E3 ubiquitin ligase TRIM9 regulates synaptic function and actin dynamics in response to netrin-1. Mol Biol Cell 2024; 35:ar67. [PMID: 38507236 PMCID: PMC11151106 DOI: 10.1091/mbc.e23-12-0476] [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: 01/02/2024] [Revised: 03/04/2024] [Accepted: 03/13/2024] [Indexed: 03/22/2024] Open
Abstract
During neuronal development, dynamic filopodia emerge from dendrites and mature into functional dendritic spines during synaptogenesis. Dendritic filopodia and spines respond to extracellular cues, influencing dendritic spine shape and size as well as synaptic function. Previously, the E3 ubiquitin ligase TRIM9 was shown to regulate filopodia in early stages of neuronal development, including netrin-1-dependent axon guidance and branching. Here, we demonstrate that TRIM9 also localizes to dendritic filopodia and spines of murine cortical and hippocampal neurons during synaptogenesis and is required for synaptic responses to netrin. In particular, TRIM9 is enriched in the postsynaptic density (PSD) within dendritic spines and loss of Trim9 alters the PSD proteome, including the actin cytoskeleton landscape. While netrin exposure induces accumulation of the Arp2/3 complex and filamentous actin in dendritic spine heads, this response is disrupted by genetic deletion of Trim9. In addition, we document changes in the synaptic receptors associated with loss of Trim9. These defects converge on a loss of netrin-dependent increases in neuronal firing rates, indicating TRIM9 is required downstream of synaptic netrin-1 signaling. We propose that TRIM9 regulates cytoskeletal dynamics in dendritic spines and is required for the proper response to synaptic stimuli.
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Affiliation(s)
- Laura E. McCormick
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Elliot B. Evans
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Natalie K. Barker
- Hooker Proteomics Core, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Laura E. Herring
- Hooker Proteomics Core, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Department of Pharmacology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Graham H. Diering
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
| | - Stephanie L. Gupton
- Department of Cell Biology and Physiology, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Neuroscience Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
- Lineberger Comprehensive Cancer Center, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599
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Tovo PA, Marozio L, Abbona G, Calvi C, Frezet F, Gambarino S, Dini M, Benedetto C, Galliano I, Bergallo M. Pregnancy Is Associated with Impaired Transcription of Human Endogenous Retroviruses and of TRIM28 and SETDB1, Particularly in Mothers Affected by Multiple Sclerosis. Viruses 2023; 15:v15030710. [PMID: 36992419 PMCID: PMC10051116 DOI: 10.3390/v15030710] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/01/2023] [Accepted: 03/06/2023] [Indexed: 03/12/2023] Open
Abstract
Accumulating evidence highlights the pathogenetic role of human endogenous retroviruses (HERVs) in eliciting and maintaining multiple sclerosis (MS). Epigenetic mechanisms, such as those regulated by TRIM 28 and SETDB1, are implicated in HERV activation and in neuroinflammatory disorders, including MS. Pregnancy markedly improves the course of MS, but no study explored the expressions of HERVs and of TRIM28 and SETDB1 during gestation. Using a polymerase chain reaction real-time Taqman amplification assay, we assessed and compared the transcriptional levels of pol genes of HERV-H, HERV-K, HERV-W; of env genes of Syncytin (SYN)1, SYN2, and multiple sclerosis associated retrovirus (MSRV); and of TRIM28 and SETDB1 in peripheral blood and placenta from 20 mothers affected by MS; from 27 healthy mothers, in cord blood from their neonates; and in blood from healthy women of child-bearing age. The HERV mRNA levels were significantly lower in pregnant than in nonpregnant women. Expressions of all HERVs were downregulated in the chorion and in the decidua basalis of MS mothers compared to healthy mothers. The former also showed lower mRNA levels of HERV-K-pol and of SYN1, SYN2, and MSRV in peripheral blood. Significantly lower expressions of TRIM28 and SETDB1 also emerged in pregnant vs. nonpregnant women and in blood, chorion, and decidua of mothers with MS vs. healthy mothers. In contrast, HERV and TRIM28/SETDB1 expressions were comparable between their neonates. These results show that gestation is characterized by impaired expressions of HERVs and TRIM28/SETDB1, particularly in mothers with MS. Given the beneficial effects of pregnancy on MS and the wealth of data suggesting the putative contribution of HERVs and epigenetic processes in the pathogenesis of the disease, our findings may further support innovative therapeutic interventions to block HERV activation and to control aberrant epigenetic pathways in MS-affected patients.
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Affiliation(s)
- Pier-Angelo Tovo
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
- Correspondence: (P.-A.T.); (M.B.)
| | - Luca Marozio
- Department of Surgical Sciences, Obstetrics and Gynecology 1, University of Turin, 10126 Turin, Italy
| | - Giancarlo Abbona
- Pathology Unit, Department Laboratory Medicine, AOU Città della Salute e della Scienza di Torino, 10126 Turin, Italy
| | - Cristina Calvi
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
| | - Federica Frezet
- Department of Surgical Sciences, Obstetrics and Gynecology 1, University of Turin, 10126 Turin, Italy
| | - Stefano Gambarino
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
| | - Maddalena Dini
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
| | - Chiara Benedetto
- Department of Surgical Sciences, Obstetrics and Gynecology 1, University of Turin, 10126 Turin, Italy
| | - Ilaria Galliano
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
| | - Massimiliano Bergallo
- Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
- Pediatric Laboratory, Department of Public Health and Pediatric Sciences, University of Turin, 10126 Turin, Italy
- Correspondence: (P.-A.T.); (M.B.)
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Matutino Santos P, Pereira Campos G, Nascimento C. Endo-Lysosomal and Autophagy Pathway and Ubiquitin-Proteasome System in Mood Disorders: A Review Article. Neuropsychiatr Dis Treat 2023; 19:133-151. [PMID: 36684613 PMCID: PMC9849791 DOI: 10.2147/ndt.s376380] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2022] [Accepted: 12/08/2022] [Indexed: 01/15/2023] Open
Abstract
Mood disorders are disabling conditions that cause significant functional impairment. Due to the clinical heterogeneity and complex nature of these disorders, diagnostic and treatment strategies face challenges. The etiology of mood disorders is multifactorial, involving genetic and environmental aspects that are associated with specific biological pathways including inflammation, oxidative stress, and neuroprotection. Alterations in these pathways may reduce the cell's ability to recover from stress conditions occurring during mood episodes. The endo-lysosomal and autophagy pathway (ELAP) and the ubiquitin-proteasome system (UPS) play critical roles in protein homeostasis, impacting neuroplasticity and neurodevelopment. Thus, emerging evidence has suggested a role for these pathways in mental disorders. In the case of neurodegenerative diseases (NDDs), a deeper understanding in the role of ELAP and UPS has been critical to discover new treatment targets. Since it is suggested that NDDs and mood disorders share clinical symptomatology and risk factors, it has been hypothesized that there might be common underlying molecular pathways. Here, we review the importance of the ELAP and UPS for the central nervous system and for mood disorders. Finally, we discuss potential translational strategies for the diagnosis and treatment of major depressive disorder and bipolar disorder associated with these pathways.
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Affiliation(s)
- Petala Matutino Santos
- Center for Mathematics, Computing and Cognition (CMCC), Federal University of ABC (UFABC), São Paulo, Brazil
| | - Giovanna Pereira Campos
- Center for Mathematics, Computing and Cognition (CMCC), Federal University of ABC (UFABC), São Paulo, Brazil
| | - Camila Nascimento
- Department of Psychiatry, University of São Paulo Medical School, São Paulo, Brazil
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Sleyp Y, Valenzuela I, Accogli A, Ballon K, Ben-Zeev B, Berkovic SF, Broly M, Callaerts P, Caylor RC, Charles P, Chatron N, Cohen L, Coppola A, Cordeiro D, Cuccurullo C, Cuscó I, Janette diMonda, Duran-Romaña R, Ekhilevitch N, Fernández-Alvarez P, Gordon CT, Isidor B, Keren B, Lesca G, Maljaars J, Mercimek-Andrews S, Morrow MM, Muir AM, Rousseau F, Salpietro V, Scheffer IE, Schnur RE, Schymkowitz J, Souche E, Steyaert J, Stolerman ES, Vengoechea J, Ville D, Washington C, Weiss K, Zaid R, Sadleir LG, Mefford HC, Peeters H. De novo missense variants in the E3 ubiquitin ligase adaptor KLHL20 cause a developmental disorder with intellectual disability, epilepsy, and autism spectrum disorder. Genet Med 2022; 24:2464-2474. [PMID: 36214804 DOI: 10.1016/j.gim.2022.08.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2022] [Revised: 08/22/2022] [Accepted: 08/22/2022] [Indexed: 11/09/2022] Open
Abstract
PURPOSE KLHL20 is part of a CUL3-RING E3 ubiquitin ligase involved in protein ubiquitination. KLHL20 functions as the substrate adaptor that recognizes substrates and mediates the transfer of ubiquitin to the substrates. Although KLHL20 regulates neurite outgrowth and synaptic development in animal models, a role in human neurodevelopment has not yet been described. We report on a neurodevelopmental disorder caused by de novo missense variants in KLHL20. METHODS Patients were ascertained by the investigators through Matchmaker Exchange. Phenotyping of patients with de novo missense variants in KLHL20 was performed. RESULTS We studied 14 patients with de novo missense variants in KLHL20, delineating a genetic syndrome with patients having mild to severe intellectual disability, febrile seizures or epilepsy, autism spectrum disorder, hyperactivity, and subtle dysmorphic facial features. We observed a recurrent de novo missense variant in 11 patients (NM_014458.4:c.1069G>A p.[Gly357Arg]). The recurrent missense and the 3 other missense variants all clustered in the Kelch-type β-propeller domain of the KLHL20 protein, which shapes the substrate binding surface. CONCLUSION Our findings implicate KLHL20 in a neurodevelopmental disorder characterized by intellectual disability, febrile seizures or epilepsy, autism spectrum disorder, and hyperactivity.
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Affiliation(s)
- Yoeri Sleyp
- Department of Human Genetics, KU Leuven, Leuven, Belgium
| | - Irene Valenzuela
- Department of Clinical and Molecular Genetics, Vall d'Hebron University Hospital and Medicine Genetics Group, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Andrea Accogli
- Medical Genetics Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy; Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy
| | - Katleen Ballon
- Centre for Developmental Disabilities, University Hospitals Leuven, Leuven, Belgium
| | - Bruria Ben-Zeev
- Pediatric Neurology Institute, The Edmond & Lily Safra Children's Hospital, Sheba Medical Center, Ramat Gan, Tel-Hashomer, Israel; Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Samuel F Berkovic
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia
| | - Martin Broly
- Service de Génétique Médicale, Centre Hospitalier Universitaire (CHU) de Nantes, Nantes, France; Medigenome, Swiss Institute of Genomic Medicine, Geneva, Switzerland
| | | | | | - Perrine Charles
- Salpêtrière Hospital Genetic Department and Reference Center for Rare Intellectual Disabilities, APHP, Paris, France
| | - Nicolas Chatron
- Department of Medical Genetics, Hospices Civils de Lyon and NeuroMyogene Institute, CNRS UMR 5310 - INSERM U1217, Université Claude Bernard Lyon 1, Lyon, France
| | - Lior Cohen
- Genetic Institute, Barzilai University Medical Center, Ashkelon, Israel; Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheba, Israel
| | - Antonietta Coppola
- Department of Neuroscience and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - Dawn Cordeiro
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, Ontario, Canada
| | - Claudia Cuccurullo
- Department of Neuroscience and Reproductive and Odontostomatological Sciences, Federico II University, Naples, Italy
| | - Ivon Cuscó
- Department of Clinical and Molecular Genetics, Vall d'Hebron University Hospital and Medicine Genetics Group, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Janette diMonda
- Department of Human Genetics, Emory Clinic, Emory Healthcare, Atlanta, GA
| | - Ramon Duran-Romaña
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Leuven, Belgium; Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | | | - Paula Fernández-Alvarez
- Department of Clinical and Molecular Genetics, Vall d'Hebron University Hospital and Medicine Genetics Group, Vall d'Hebron Research Institute, Barcelona, Spain
| | - Christopher T Gordon
- Laboratory of Embryology and Genetics of Human Malformations, Institut National de la Santé et de la Recherche Médicale (INSERM), Institut Imagine, Université de Paris, Paris, France
| | - Bertrand Isidor
- Service de Génétique Médicale, Centre Hospitalier Universitaire (CHU) de Nantes, Nantes, France
| | - Boris Keren
- Département de Génétique, AP-HP.Sorbonne Université, Hôpital Pitié-Salpêtrière, Paris, France
| | - Gaetan Lesca
- Department of Medical Genetics, Hospices Civils de Lyon and NeuroMyogene Institute, CNRS UMR 5310 - INSERM U1217, Université Claude Bernard Lyon 1, Lyon, France
| | - Jarymke Maljaars
- Parenting and Special Education Research Unit, KU Leuven, Leuven, Belgium
| | - Saadet Mercimek-Andrews
- Division of Clinical and Metabolic Genetics, The Hospital for Sick Children, Toronto, Ontario, Canada; Department of Medical Genetics, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | | | - Alison M Muir
- Division of Genetic Medicine, Department of Pediatrics, University of Washington, Seattle, WA
| | | | - Frederic Rousseau
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Leuven, Belgium; Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Vincenzo Salpietro
- Department of Neurosciences, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genoa, Genoa, Italy; Pediatric Neurology and Muscular Diseases Unit, IRCCS Istituto Giannina Gaslini, Genoa, Italy
| | - Ingrid E Scheffer
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia; Department of Paediatrics, University of Melbourne, Royal Children's Hospital, Victoria, Australia; Florey and Murdoch Children's Research Institutes, Melbourne, Victoria, Australia
| | | | - Joost Schymkowitz
- Switch Laboratory, VIB-KU Leuven Center for Brain & Disease Research, Leuven, Belgium; Department of Cellular and Molecular Medicine, KU Leuven, Leuven, Belgium
| | - Erika Souche
- Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium
| | - Jean Steyaert
- Center for Developmental Psychiatry, KU Leuven, Leuven, Belgium
| | | | - Jaime Vengoechea
- Department of Human Genetics, School of Medicine, Emory University, Atlanta, GA
| | - Dorothée Ville
- Pediatric Neurology Department, Lyon University Hospital, Lyon, France
| | | | - Karin Weiss
- Genetics Institute, Rambam Health Care Campus, Haifa, Israel; The Ruth and Bruce Rappaport Faculty of Medicine, Technion-Israel Institute of Technology, Haifa, Israel
| | - Rinat Zaid
- Genetics Institute, Rambam Health Care Campus, Haifa, Israel
| | - Lynette G Sadleir
- Department of Paediatrics and Child Health, University of Otago, Wellington, New Zealand
| | - Heather C Mefford
- Division of Genetic Medicine, Department of Pediatrics, University of Washington, Seattle, WA; Center for Pediatric Neurological Disease Research, St. Jude Children's Research Hospital, Memphis, TN
| | - Hilde Peeters
- Department of Human Genetics, KU Leuven, Leuven, Belgium; Center for Human Genetics, University Hospitals Leuven, Leuven, Belgium.
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Progress in the mechanism of neuronal surface P antigen modulating hippocampal function and implications for autoimmune brain disease. Curr Opin Neurol 2022; 35:436-442. [PMID: 35674087 DOI: 10.1097/wco.0000000000001054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
PURPOSE OF REVIEW The aim of this study was to present a new regulation system in the hippocampus constituted by the neuronal surface P antigen (NSPA) and the tyrosine phosphatase PTPMEG/PTPN4, which provides mechanistic and therapeutic possibilities for cognitive dysfunction driven by antiribosomal P protein autoantibodies in patients with systemic lupus erythematosus (SLE). RECENT FINDINGS Mice models lacking the function of NSPA as an E3 ubiquitin ligase show impaired glutamatergic synaptic plasticity, decreased levels of NMDAR at the postsynaptic density in hippocampus and memory deficits. The levels of PTPMEG/PTPN4 are increased due to lower ubiquitination and proteasomal degradation, resulting in dephosphorylation of tyrosines that control endocytosis in GluN2 NMDAR subunits. Adult hippocampal neurogenesis (AHN) that normally contributes to memory processes is also defective in the absence of NSPA. SUMMARY NSPA function is crucial in memory processes controlling the stability of NMDAR at PSD through the ubiquitination of PTPMEG/PTPN4 and also through AHN. As anti-P autoantibodies reproduce the impairments of glutamatergic transmission, plasticity and memory performance seen in the absence of NSPA, it might be expected to perturb the NSPA/PTPMEG/PTPN4 pathway leading to hypofunction of NMDAR. This neuropathogenic mechanism contrasts with that of anti-NMDAR antibodies also involved in lupus cognitive dysfunction. Testing this hypothesis might open new therapeutic possibilities for cognitive dysfunction in SLE patients bearing anti-P autoantibodies.
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Enhanced Expression of Human Endogenous Retroviruses, TRIM28 and SETDB1 in Autism Spectrum Disorder. Int J Mol Sci 2022; 23:ijms23115964. [PMID: 35682642 PMCID: PMC9180946 DOI: 10.3390/ijms23115964] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2022] [Revised: 05/12/2022] [Accepted: 05/23/2022] [Indexed: 02/01/2023] Open
Abstract
Human endogenous retroviruses (HERVs) are relics of ancestral infections and represent 8% of the human genome. They are no longer infectious, but their activation has been associated with several disorders, including neuropsychiatric conditions. Enhanced expression of HERV-K and HERV-H envelope genes has been found in the blood of autism spectrum disorder (ASD) patients, but no information is available on syncytin 1 (SYN1), SYN2, and multiple sclerosis-associated retrovirus (MSRV), which are thought to be implicated in brain development and immune responses. HERV activation is regulated by TRIM28 and SETDB1, which are part of the epigenetic mechanisms that organize the chromatin architecture in response to external stimuli and are involved in neural cell differentiation and brain inflammation. We assessed, through a PCR realtime Taqman amplification assay, the transcription levels of pol genes of HERV-H, -K, and -W families, of env genes of SYN1, SYN2, and MSRV, as well as of TRIM28 and SETDB1 in the blood of 33 ASD children (28 males, median 3.8 years, 25–75% interquartile range 3.0–6.0 y) and healthy controls (HC). Significantly higher expressions of TRIM28 and SETDB1, as well as of all the HERV genes tested, except for HERV-W-pol, were found in ASD, as compared with HC. Positive correlations were observed between the mRNA levels of TRIM28 or SETDB1 and every HERV gene in ASD patients, but not in HC. Overexpression of TRIM28/SETDB1 and several HERVs in children with ASD and the positive correlations between their transcriptional levels suggest that these may be main players in pathogenetic mechanisms leading to ASD.
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Desbois M, Opperman KJ, Amezquita J, Gaglio G, Crawley O, Grill B. Ubiquitin ligase activity inhibits Cdk5 to control axon termination. PLoS Genet 2022; 18:e1010152. [PMID: 35421092 PMCID: PMC9041834 DOI: 10.1371/journal.pgen.1010152] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 04/26/2022] [Accepted: 03/17/2022] [Indexed: 01/29/2023] Open
Abstract
The Cdk5 kinase plays prominent roles in nervous system development, plasticity, behavior and disease. It also has important, non-neuronal functions in cancer, the immune system and insulin secretion. At present, we do not fully understand negative regulatory mechanisms that restrict Cdk5. Here, we use Caenorhabditis elegans to show that CDK-5 is inhibited by the RPM-1/FSN-1 ubiquitin ligase complex. This atypical RING ubiquitin ligase is conserved from C. elegans through mammals. Our finding originated from unbiased, in vivo affinity purification proteomics, which identified CDK-5 as a putative RPM-1 substrate. CRISPR-based, native biochemistry showed that CDK-5 interacts with the RPM-1/FSN-1 ubiquitin ligase complex. A CRISPR engineered RPM-1 substrate ‘trap’ enriched CDK-5 binding, which was mediated by the FSN-1 substrate recognition module. To test the functional genetic relationship between the RPM-1/FSN-1 ubiquitin ligase complex and CDK-5, we evaluated axon termination in mechanosensory neurons and motor neurons. Our results indicate that RPM-1/FSN-1 ubiquitin ligase activity restricts CDK-5 to control axon termination. Collectively, these proteomic, biochemical and genetic results increase our understanding of mechanisms that restrain Cdk5 in the nervous system. Cdk5 is an atypical cyclin dependent kinase and an important player in nervous system development, plasticity, and disease. Decades of research has focused on understanding how Cdk5 is activated. In contrast, we know much less about the genetic and molecular mechanisms that restrict Cdk5 activity. Here, we examined how Cdk5 is inhibited in the nervous system using the model organism C. elegans. Our results indicate that the RPM-1/FSN-1 E3 ubiquitin ligase complex inhibits Cdk5 to control termination of axon growth. Our finding that ubiquitin ligase activity restricts Cdk5 in the nervous system in vivo now opens up the interesting possibility that ubiquitin ligase activity might regulate Cdk5 in other cellular contexts and disease settings.
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Affiliation(s)
- Muriel Desbois
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, Washington, United States of America
| | - Karla J. Opperman
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, Washington, United States of America
| | - Jonathan Amezquita
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, Washington, United States of America
- Molecular and Cellular Biology Graduate Program, University of Washington, Seattle, Washington, United States of America
| | - Gabriel Gaglio
- Department of Neuroscience, The Scripps Research Institute, Jupiter, Florida, United States of America
| | - Oliver Crawley
- Instituto de Neurociencias de Alicante, Universidad Miguel Hernández-CSIC, San Juan de Alicante, Spain
| | - Brock Grill
- Center for Integrative Brain Research, Seattle Children’s Research Institute, Seattle, Washington, United States of America
- Department of Pediatrics, University of Washington School of Medicine, Seattle, Washington, United States of America
- Department of Pharmacology, University of Washington M1-A303/305 Behnke Conference Room, Arnold building, Seattle, Washington, United States of America
- * E-mail:
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9
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Chen X, Zhang G, Li P, Yu J, Kang L, Qin B, Wang Y, Wu J, Wang Y, Zhang J, Qin M, Guan H. SYVN1-mediated ubiquitination and degradation of MSH3 promotes the apoptosis of lens epithelial cells. FEBS J 2022; 289:5682-5696. [PMID: 35334159 DOI: 10.1111/febs.16447] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2021] [Revised: 11/24/2021] [Accepted: 03/24/2022] [Indexed: 12/29/2022]
Abstract
The pathology of age-related cataract (ARC) mainly involves the misfolding and aggregation of proteins, especially oxidative damage repair proteins, in the lens, induced by ultraviolet-B (UVB). MSH3, as a key member of the mismatch repair family, primarily maintains genome stability. However, the function of MSH3 and the mechanism by which cells maintain MSH3 proteostasis during cataractogenesis remains unknown. In the present study, the protein expression levels of MSH3 were found to be attenuated in ARC specimens and SRA01/04 cells under UVB exposure. The ectopic expression of MSH3 notably impeded UVB-induced apoptosis, whereas the knockdown of MSH3 promoted apoptosis. Protein half-life assay revealed that UVB irradiation accelerated the decline of MSH3 by ubiquitination and degradation. Subsequently, we found that E3 ubiquitin ligase synoviolin (SYVN1) interacted with MSH3 and promoted its ubiquitination and degradation. Of note, the expression and function of SYVN1 were contrary to those of MSH3 and SYVN1 regulated MSH3 protein degradation via the ubiquitin-proteasome pathway and the autophagy-lysosome pathway. Based on these findings, we propose a mechanism for ARC pathogenesis that involves SYVN1-mediated degradation of MSH3 via the ubiquitin-proteasome pathway and the autophagy-lysosome pathway, and suggest that interventions targeting SYVN1 might be a potential therapeutic strategy for ARC.
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Affiliation(s)
- Xiaojuan Chen
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Guowei Zhang
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Pengfei Li
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Jianfeng Yu
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Lihua Kang
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Bai Qin
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Ying Wang
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Jian Wu
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Yong Wang
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Junfang Zhang
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Miaomiao Qin
- Eye Institute, Affiliated Hospital of Nantong University, China
| | - Huaijin Guan
- Eye Institute, Affiliated Hospital of Nantong University, China
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10
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Gundelfinger ED, Karpova A, Pielot R, Garner CC, Kreutz MR. Organization of Presynaptic Autophagy-Related Processes. Front Synaptic Neurosci 2022; 14:829354. [PMID: 35368245 PMCID: PMC8968026 DOI: 10.3389/fnsyn.2022.829354] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Accepted: 01/04/2022] [Indexed: 11/13/2022] Open
Abstract
Brain synapses pose special challenges on the quality control of their protein machineries as they are far away from the neuronal soma, display a high potential for plastic adaptation and have a high energy demand to fulfill their physiological tasks. This applies in particular to the presynaptic part where neurotransmitter is released from synaptic vesicles, which in turn have to be recycled and refilled in a complex membrane trafficking cycle. Pathways to remove outdated and damaged proteins include the ubiquitin-proteasome system acting in the cytoplasm as well as membrane-associated endolysosomal and the autophagy systems. Here we focus on the latter systems and review what is known about the spatial organization of autophagy and endolysomal processes within the presynapse. We provide an inventory of which components of these degradative systems were found to be present in presynaptic boutons and where they might be anchored to the presynaptic apparatus. We identify three presynaptic structures reported to interact with known constituents of membrane-based protein-degradation pathways and therefore may serve as docking stations. These are (i) scaffolding proteins of the cytomatrix at the active zone, such as Bassoon or Clarinet, (ii) the endocytic machinery localized mainly at the peri-active zone, and (iii) synaptic vesicles. Finally, we sketch scenarios, how presynaptic autophagic cargos are tagged and recruited and which cellular mechanisms may govern membrane-associated protein turnover in the presynapse.
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Affiliation(s)
- Eckart D. Gundelfinger
- Research Group Neuroplasticity, Leibniz Institute for Neurobiology, Magdeburg, Germany
- Institute of Pharmacology and Toxicology, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), Magdeburg, Germany
- *Correspondence: Eckart D. Gundelfinger,
| | - Anna Karpova
- Research Group Neuroplasticity, Leibniz Institute for Neurobiology, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), Magdeburg, Germany
| | - Rainer Pielot
- Institute of Pharmacology and Toxicology, Medical Faculty, Otto von Guericke University, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), Magdeburg, Germany
| | - Craig C. Garner
- German Center for Neurodegenerative Diseases (DZNE), Berlin, Germany
- Charité – Universitätsmedizin Berlin, Berlin, Germany
| | - Michael R. Kreutz
- Research Group Neuroplasticity, Leibniz Institute for Neurobiology, Magdeburg, Germany
- Center for Behavioral Brain Sciences (CBBS), Magdeburg, Germany
- Center for Molecular Neurobiology (ZMNH), University Hospital Hamburg-Eppendorf, Hamburg, Germany
- German Center for Neurodegenerative Diseases (DZNE), Magdeburg, Germany
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11
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E3 ligases: a potential multi-drug target for different types of cancers and neurological disorders. Future Med Chem 2022; 14:187-201. [DOI: 10.4155/fmc-2021-0157] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Ubiquitylation is a posttranslational modification of proteins that is necessary for a variety of cellular processes. E1 ubiquitin activating enzyme, E2 ubiquitin conjugating enzyme, and E3 ubiquitin ligase are all involved in transferring ubiquitin to the target substrate to regulate cellular function. The objective of this review is to provide an overview of different aspects of E3 ubiquitin ligases that can lead to major biological system failure in several deadly diseases. The first part of this review covers the important characteristics of E3 ubiquitin ligases and their classification based on structural domains. Further, the authors provide some online resources that help researchers explore the data relevant to the enzyme. The following section delves into the involvement of E3 ubiquitin ligases in various diseases and biological processes, including different types of cancer and neurological disorders.
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12
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Acharya A, Kavus H, Dunn P, Nasir A, Folk L, Withrow K, Wentzensen IM, Ruzhnikov MRZ, Fallot C, Smol T, Rama M, Brown K, Whalen S, Ziegler A, Barth M, Chassevent A, Smith-Hicks C, Afenjar A, Courtin T, Heide S, Font-Montgomery E, Heid C, Hamm JA, Love DR, Thabet F, Misra VK, Cunningham M, Leal SM, Jarvela I, Normand EA, Zou F, Helal M, Keren B, Torti E, Chung WK, Schrauwen I. Delineating the genotypic and phenotypic spectrum of HECW2-related neurodevelopmental disorders. J Med Genet 2021; 59:669-677. [PMID: 34321324 DOI: 10.1136/jmedgenet-2021-107871] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2021] [Accepted: 07/06/2021] [Indexed: 11/03/2022]
Abstract
BACKGROUND Variants in HECW2 have recently been reported to cause a neurodevelopmental disorder with hypotonia, seizures and impaired language; however, only six variants have been reported and the clinical characteristics have only broadly been defined. METHODS Molecular and clinical data were collected from clinical and research cohorts. Massive parallel sequencing was performed and identified individuals with a HECW2-related neurodevelopmental disorder. RESULTS We identified 13 novel missense variants in HECW2 in 22 unpublished cases, of which 18 were confirmed to have a de novo variant. In addition, we reviewed the genotypes and phenotypes of previously reported and new cases with HECW2 variants (n=35 cases). All variants identified are missense, and the majority of likely pathogenic and pathogenic variants are located in or near the C-terminal HECT domain (88.2%). We identified several clustered variants and four recurrent variants (p.(Arg1191Gln);p.(Asn1199Lys);p.(Phe1327Ser);p.(Arg1330Trp)). Two variants, (p.(Arg1191Gln);p.(Arg1330Trp)), accounted for 22.9% and 20% of cases, respectively. Clinical characterisation suggests complete penetrance for hypotonia with or without spasticity (100%), developmental delay/intellectual disability (100%) and developmental language disorder (100%). Other common features are behavioural problems (88.9%), vision problems (83.9%), motor coordination/movement (75%) and gastrointestinal issues (70%). Seizures were present in 61.3% of individuals. Genotype-phenotype analysis shows that HECT domain variants are more frequently associated with cortical visual impairment and gastrointestinal issues. Seizures were only observed in individuals with variants in or near the HECT domain. CONCLUSION We provide a comprehensive review and expansion of the genotypic and phenotypic spectrum of HECW2 disorders, aiding future molecular and clinical diagnosis and management.
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Affiliation(s)
- Anushree Acharya
- Center for Statistical Genetics, Gertrude H. Sergievsky Center and the Department of Neurology, Columbia University Medical Center, New York, New York, USA
| | - Haluk Kavus
- Department of Pediatrics, Columbia University, New York, New York, USA
| | - Patrick Dunn
- The George Washington University, Washington, District of Columbia, USA
| | - Abdul Nasir
- Department of Molecular Science and Technology, Ajou University, Suwon, The Republic of Korea
| | | | | | | | - Maura R Z Ruzhnikov
- Neurology and Neurological Sciences, Pediatrics, Division of Medical Genetics, Stanford University and Lucile Packard Children's Hospital, Palo Alto, California, USA
| | | | - Thomas Smol
- Institut de Génétique, Univ Lille, EA7364 RADEME, CHU Lille, Lille, France
| | | | - Kathleen Brown
- Pediatrics-Clinical Genetics and Metabolism, School of Medicine, University of Colorado-Anschutz Medical Campus, Aurora, Colorado, USA
| | - Sandra Whalen
- UF de génétique Clinique et Centre de Référence Anomalies du Développement et Syndromes Malformatifs, Assistance Publique-Hôpitaux de Paris (APHP) Sorbonne Université, Hôpital Armand Trousseau, ERN-ITHACA, Paris, France
| | - Alban Ziegler
- Department of Genetics, Angers University Hospital, Angers, France
| | - Magali Barth
- Department of Genetics, Angers University Hospital, Angers, France
| | - Anna Chassevent
- Division of Neurogenetics, Kennedy Krieger Institute, Baltimore, Maryland, USA
| | - Constance Smith-Hicks
- Division of Neurogenetics, Kennedy Krieger Institute, Department of Neurology, Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Alexandra Afenjar
- Assistance Publique-Hôpitaux de Paris (APHP) Sorbonne Université, Centre de Référence Malformations et maladies congénitales du cervelet et déficiences intellectuelles de causes rares, département de génétique et embryologie médicale, Hôpital Trousseau, Paris, France
| | - Thomas Courtin
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (APHP), Paris, France
| | - Solveig Heide
- Department of Genetics, Pitié-Salpêtrière Hospital, Referral Center for Intellectual Disabilities of Rare Causes, Assistance Publique-Hôpitaux de Paris (APHP) Sorbonne Université, Paris, France
| | | | - Caleb Heid
- University Hospital Medical Genetics Clinic, University of Missouri, Columbia, Missouri, USA
| | - J Austin Hamm
- Pediatric Genetics, East Tennessee Children's Hospital, Knoxville, Tennessee, USA
| | | | - Farouq Thabet
- Pediatric Neurology Division, Sidra Medicine, Doha, Qatar
| | - Vinod K Misra
- Department of Pediatrics, Division of Genetic, Genomic, and Metabolic Disorders, Children's Hospital of Michigan, Detroit, Michigan, USA.,Discipline of Pediatrics, Central Michigan University, Mount Pleasant, Michigan, USA
| | - Mitch Cunningham
- Department of Pediatrics, Division of Genetic, Genomic, and Metabolic Disorders, Children's Hospital of Michigan, Detroit, Michigan, USA
| | - Suzanne M Leal
- Center for Statistical Genetics, Gertrude H. Sergievsky Center and the Department of Neurology, Columbia University Medical Center, New York, New York, USA.,Taub Institute for Alzheimer's Disease and the Aging Brain, Columbia University Medical Center, New York, New York, USA
| | - Irma Jarvela
- Department of Medical Genetics, University of Helsinki, Helsinki, Finland
| | | | | | - Mayada Helal
- Department of Pediatrics, Columbia University, New York, New York, USA
| | - Boris Keren
- Département de génétique, Hôpital Pitié-Salpêtrière, Assistance Publique-Hôpitaux de Paris (APHP), Paris, France
| | | | - Wendy K Chung
- Department of Pediatrics, Columbia University, New York, New York, USA .,Department of Medicine, Columbia University, New York, New York, USA
| | - Isabelle Schrauwen
- Center for Statistical Genetics, Gertrude H. Sergievsky Center and the Department of Neurology, Columbia University Medical Center, New York, New York, USA
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