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Authier F, Ondruskova N, Ferenbach AT, McNeilly AD, van Aalten DMF. Neurodevelopmental defects in a mouse model of O-GlcNAc transferase intellectual disability. Dis Model Mech 2024; 17:dmm050671. [PMID: 38566589 PMCID: PMC11095632 DOI: 10.1242/dmm.050671] [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: 12/21/2023] [Accepted: 03/15/2024] [Indexed: 04/04/2024] Open
Abstract
The addition of O-linked β-N-acetylglucosamine (O-GlcNAc) to proteins (referred to as O-GlcNAcylation) is a modification that is crucial for vertebrate development. O-GlcNAcylation is catalyzed by O-GlcNAc transferase (OGT) and reversed by O-GlcNAcase (OGA). Missense variants of OGT have recently been shown to segregate with an X-linked syndromic form of intellectual disability, OGT-linked congenital disorder of glycosylation (OGT-CDG). Although the existence of OGT-CDG suggests that O-GlcNAcylation is crucial for neurodevelopment and/or cognitive function, the underlying pathophysiologic mechanisms remain unknown. Here we report a mouse line that carries a catalytically impaired OGT-CDG variant. These mice show altered O-GlcNAc homeostasis with decreased global O-GlcNAcylation and reduced levels of OGT and OGA in the brain. Phenotypic characterization of the mice revealed lower body weight associated with reduced body fat mass, short stature and microcephaly. This mouse model will serve as an important tool to study genotype-phenotype correlations in OGT-CDG in vivo and for the development of possible treatment avenues for this disorder.
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Affiliation(s)
- Florence Authier
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus, Denmark
| | - Nina Ondruskova
- Department of Paediatrics and Inherited Metabolic Disorders, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, 128 08 Praha 2, Czech Republic
| | - Andrew T. Ferenbach
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus, Denmark
| | - Alison D. McNeilly
- Division of Systems Medicine, School of Medicine, University of Dundee, Dundee DD1 9SY, UK
| | - Daan M. F. van Aalten
- Department of Molecular Biology and Genetics, Aarhus University, 8000 Aarhus, Denmark
- Division of Cell and Developmental Biology, School of Life Sciences, University of Dundee, Dundee DD1 5EH, UK
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2
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Wang Z, Li Q, Kolls BJ, Mace B, Yu S, Li X, Liu W, Chaparro E, Shen Y, Dang L, Del Águila Á, Bernstock JD, Johnson KR, Yao J, Wetsel WC, Moore SD, Turner DA, Yang W. Sustained overexpression of spliced X-box-binding protein-1 in neurons leads to spontaneous seizures and sudden death in mice. Commun Biol 2023; 6:252. [PMID: 36894627 PMCID: PMC9998612 DOI: 10.1038/s42003-023-04594-8] [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: 06/25/2022] [Accepted: 02/14/2023] [Indexed: 03/11/2023] Open
Abstract
The underlying etiologies of seizures are highly heterogeneous and remain incompletely understood. While studying the unfolded protein response (UPR) pathways in the brain, we unexpectedly discovered that transgenic mice (XBP1s-TG) expressing spliced X-box-binding protein-1 (Xbp1s), a key effector of UPR signaling, in forebrain excitatory neurons, rapidly develop neurologic deficits, most notably recurrent spontaneous seizures. This seizure phenotype begins around 8 days after Xbp1s transgene expression is induced in XBP1s-TG mice, and by approximately 14 days post induction, the seizures evolve into status epilepticus with nearly continuous seizure activity followed by sudden death. Animal death is likely due to severe seizures because the anticonvulsant valproic acid could significantly prolong the lives of XBP1s-TG mice. Mechanistically, our gene profiling analysis indicates that compared to control mice, XBP1s-TG mice exhibit 591 differentially regulated genes (mostly upregulated) in the brain, including several GABAA receptor genes that are notably downregulated. Finally, whole-cell patch clamp analysis reveals a significant reduction in both spontaneous and tonic GABAergic inhibitory responses in Xbp1s-expressing neurons. Taken together, our findings unravel a link between XBP1s signaling and seizure occurrence.
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Affiliation(s)
- Zhuoran Wang
- Multidisciplinary Brain Protection Program, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Qiang Li
- Department of Neurology, Duke University Medical Center, Durham, NC, USA
| | - Brad J Kolls
- Department of Neurology, Duke University Medical Center, Durham, NC, USA
| | - Brian Mace
- Department of Neurology, Duke University Medical Center, Durham, NC, USA
| | - Shu Yu
- Multidisciplinary Brain Protection Program, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Xuan Li
- Multidisciplinary Brain Protection Program, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Wei Liu
- Department of Bioengineering, Duke University, Durham, NC, USA
| | - Eduardo Chaparro
- Department of Neurosurgery, Duke University Medical Center, Durham, NC, USA
| | - Yuntian Shen
- Multidisciplinary Brain Protection Program, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Lihong Dang
- Multidisciplinary Brain Protection Program, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Ángela Del Águila
- Multidisciplinary Brain Protection Program, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA
| | - Joshua D Bernstock
- National Institute of Neurological Disorders and Stroke, NINDS/NIH, Bethesda, MD, USA
| | - Kory R Johnson
- National Institute of Neurological Disorders and Stroke, NINDS/NIH, Bethesda, MD, USA
| | - Junjie Yao
- Department of Bioengineering, Duke University, Durham, NC, USA
| | - William C Wetsel
- Department of Neurology, Duke University Medical Center, Durham, NC, USA
- Departments of Neurobiology and Cell Biology, Duke University Medical Center, Durham, NC, USA
| | - Scott D Moore
- Department of Psychiatry and Behavioral Sciences, Duke University Medical Center, Durham, NC, USA
| | - Dennis A Turner
- Departments of Neurosurgery, Neurobiology and Biomedical Engineering, Duke University Medical Center, Durham, NC, USA
| | - Wei Yang
- Multidisciplinary Brain Protection Program, Department of Anesthesiology, Duke University Medical Center, Durham, NC, USA.
- Department of Neurology, Duke University Medical Center, Durham, NC, USA.
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3
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Ots HD, Anderson T, Sherrerd-Smith W, DelBianco J, Rasic G, Chuprin A, Toor Z, Fitch E, Ahuja K, Reid F, Musto AE. Scoping review of disease-modifying effect of drugs in experimental epilepsy. Front Neurol 2023; 14:1097473. [PMID: 36908628 PMCID: PMC9997527 DOI: 10.3389/fneur.2023.1097473] [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: 11/13/2022] [Accepted: 02/02/2023] [Indexed: 02/25/2023] Open
Abstract
Objective Epilepsy affects ~50 million people worldwide causing significant medical, financial, and sociologic concerns for affected patients and their families. To date, treatment of epilepsy is primarily symptomatic management because few effective preventative or disease-modifying interventions exist. However, recent research has identified neurobiological mechanisms of epileptogenesis, providing new pharmacologic targets to investigate. The current scientific evidence remains scattered across multiple studies using different model and experimental designs. The review compiles different models of anti-epileptogenic investigation and highlights specific compounds with potential epileptogenesis-modifying experimental drugs. It provides a platform for standardization of future epilepsy research to allow a more robust compound analysis of compounds with potential for epilepsy prevention. Methods PubMed, Ovid MEDLINE, and Web of Science were searched from 2007 to 2021. Studies with murine models of epileptogenesis and explicitly detailed experimental procedures were included in the scoping review. In total, 51 articles were selected from 14,983 and then grouped by five core variables: (1) seizure frequency, (2) seizure severity, (3) spontaneous recurrent seizures (SRS), (4) seizure duration, and (5) mossy fiber sprouting (MFS). The variables were differentiated based on experimental models including methods of seizure induction, treatment schedule and timeline of data collection. Data was categorized by the five core variables and analyzed by converting original treatment values to units of percent of its respective control. Results Discrepancies in current epileptogenesis models significantly complicate inter-study comparison of potential anti-epileptogenic interventions. With our analysis, many compounds showed a potential to reduce epileptogenic characteristics defined by the five core variables. WIN55,212-2, aspirin, rapamycin, 1400W, and LEV + BQ788 were identified compounds with the potential of effective anti-epileptic properties. Significance Our review highlights the need for consistent methodology in epilepsy research and provides a novel approach for future research. Inconsistent experimental designs hinder study comparison, slowing the progression of treatments for epilepsy. If the research community can optimize and standardize parameters such as methods of seizure induction, administration schedule, sampling time, and aniMal models, more robust meta-analysis and collaborative research would follow. Additionally, some compounds such as rapamycin, WIN 55,212-2, aspirin, 1400W, and LEV + BQ788 showed anti-epileptogenic modulation across multiple variables. We believe they warrant further study both individually and synergistically.
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Affiliation(s)
- Heather D Ots
- School of Medicine, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Taylor Anderson
- School of Medicine, Eastern Virginia Medical School, Norfolk, VA, United States
| | | | - John DelBianco
- School of Medicine, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Gordana Rasic
- School of Medicine, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Anthony Chuprin
- School of Medicine, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Zeeshan Toor
- School of Medicine, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Elizabeth Fitch
- School of Medicine, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Kripa Ahuja
- School of Medicine, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Faith Reid
- School of Medicine, Eastern Virginia Medical School, Norfolk, VA, United States
| | - Alberto E Musto
- Department of Pathology and Anatomy, Eastern Virginia Medical School, Norfolk, VA, United States.,Department of Neurology, Eastern Virginia Medical School, Norfolk, VA, United States
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Wang R, Zhu W, Liang G, Xu J, Guo J, Wang L. Animal models for epileptic foci localization, seizure detection, and prediction by electrical impedance tomography. WILEY INTERDISCIPLINARY REVIEWS. COGNITIVE SCIENCE 2022; 13:e1619. [PMID: 36093634 DOI: 10.1002/wcs.1619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/16/2022] [Revised: 07/08/2022] [Accepted: 07/14/2022] [Indexed: 06/15/2023]
Abstract
Surgical resection of lesions and closed-loop suppression are the two main treatment options for patients with refractory epilepsy whose symptoms cannot be managed with medicines. Unfortunately, failures in foci localization and seizure prediction are constraining these treatments. Electrical impedance tomography (EIT), sensitive to impedance changes caused by blood flow or cell swelling, is a potential new way to locate epileptic foci and predict seizures. Animal validation is a necessary research process before EIT can be used in clinical practice, but it is unclear which among the many animal epilepsy models is most suited to this task. The selection of an animal model of epilepsy that is similar to human seizures and can be adapted to EIT is important for the accuracy and reliability of EIT research results. This study provides an overview of the animal models of epilepsy that have been used in research on the use of EIT to locate the foci or predict seizures; discusses the advantages and disadvantages of these models regarding inducement by chemical convulsant and electrical stimulation; and finally proposes optimal animal models of epilepsy to obtain more convincing research results for foci localization and seizure prediction by EIT. The ultimate goal of this study is to facilitate the development of new treatments for patients with refractory epilepsy. This article is categorized under: Neuroscience > Clinical Neuroscience Psychology > Brain Function and Dysfunction.
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Affiliation(s)
- Rong Wang
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Wenjing Zhu
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Guohua Liang
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Jiaming Xu
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Jie Guo
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
| | - Lei Wang
- Institute of Medical Research, Northwestern Polytechnical University, Xi'an, China
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Giacopelli G, Tegolo D, Migliore M. The role of network connectivity on epileptiform activity. Sci Rep 2021; 11:20792. [PMID: 34675264 PMCID: PMC8531347 DOI: 10.1038/s41598-021-00283-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2021] [Accepted: 08/27/2021] [Indexed: 11/09/2022] Open
Abstract
A number of potentially important mechanisms have been identified as key players to generate epileptiform activity, such as genetic mutations, activity-dependent alteration of synaptic functions, and functional network reorganization at the macroscopic level. Here we study how network connectivity at cellular level can affect the onset of epileptiform activity, using computational model networks with different wiring properties. The model suggests that networks connected as in real brain circuits are more resistant to generate seizure-like activity. The results suggest new experimentally testable predictions on the cellular network connectivity in epileptic individuals, and highlight the importance of using the appropriate network connectivity to investigate epileptiform activity with computational models.
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Affiliation(s)
- G Giacopelli
- Department of Mathematics and Informatics, University of Palermo, Palermo, Italy.,Institute of Biophysics, National Research Council, Palermo, Italy
| | - D Tegolo
- Department of Mathematics and Informatics, University of Palermo, Palermo, Italy.,Institute of Biophysics, National Research Council, Palermo, Italy
| | - M Migliore
- Institute of Biophysics, National Research Council, Palermo, Italy.
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Marshall GF, Gonzalez-Sulser A, Abbott CM. Modelling epilepsy in the mouse: challenges and solutions. Dis Model Mech 2021; 14:dmm.047449. [PMID: 33619078 PMCID: PMC7938804 DOI: 10.1242/dmm.047449] [Citation(s) in RCA: 30] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
Abstract
In most mouse models of disease, the outward manifestation of a disorder can be measured easily, can be assessed with a trivial test such as hind limb clasping, or can even be observed simply by comparing the gross morphological characteristics of mutant and wild-type littermates. But what if we are trying to model a disorder with a phenotype that appears only sporadically and briefly, like epileptic seizures? The purpose of this Review is to highlight the challenges of modelling epilepsy, in which the most obvious manifestation of the disorder, seizures, occurs only intermittently, possibly very rarely and often at times when the mice are not under direct observation. Over time, researchers have developed a number of ways in which to overcome these challenges, each with their own advantages and disadvantages. In this Review, we describe the genetics of epilepsy and the ways in which genetically altered mouse models have been used. We also discuss the use of induced models in which seizures are brought about by artificial stimulation to the brain of wild-type animals, and conclude with the ways these different approaches could be used to develop a wider range of anti-seizure medications that could benefit larger patient populations. Summary: This Review discusses the challenges of modelling epilepsy in mice, a condition in which the outward manifestation of the disorder appears only sporadically, and reviews possible solutions encompassing both genetic and induced models.
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Affiliation(s)
- Grant F Marshall
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK.,Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Alfredo Gonzalez-Sulser
- Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh EH8 9XD, UK.,Centre for Discovery Brain Sciences, 1 George Square, University of Edinburgh, Edinburgh EH8 9XD, UK
| | - Catherine M Abbott
- Centre for Genomic and Experimental Medicine, MRC Institute of Genetics and Molecular Medicine, University of Edinburgh, Western General Hospital, Crewe Road, Edinburgh EH4 2XU, UK .,Simons Initiative for the Developing Brain, University of Edinburgh, Edinburgh EH8 9XD, UK
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7
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McCarren HS, Eisen MR, Nguyen DL, Dubée PB, Ardinger CE, Dunn EN, Haines KM, Santoro AN, Bodner PM, Ondeck CA, Honnold CL, McDonough JH, Beske PH, McNutt PM. Characterization and treatment of spontaneous recurrent seizures following nerve agent-induced status epilepticus in mice. Epilepsy Res 2020; 162:106320. [PMID: 32182542 PMCID: PMC7156324 DOI: 10.1016/j.eplepsyres.2020.106320] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2019] [Revised: 02/21/2020] [Accepted: 03/09/2020] [Indexed: 12/14/2022]
Abstract
PURPOSE To develop and characterize a mouse model of spontaneous recurrent seizures following nerve agent-induced status epilepticus (SE) and test the efficacy of existing antiepileptic drugs. METHODS SE was induced in telemeterized male C57Bl6/J mice by soman exposure, and electroencephalographic activity was recorded for 4-6 weeks. Mice were treated with antiepileptic drugs (levetiracetam, valproic acid, phenobarbital) or corresponding vehicles for 14 d after exposure, followed by 14 d of drug washout. Survival, body weight, seizure characteristics, and histopathology were used to characterize the acute and chronic effects of nerve agent exposure and to evaluate the efficacy of treatments in mitigating or preventing neurological effects. RESULTS Spontaneous recurrent seizures manifested in all survivors, but the number and frequency of seizures varied considerably among mice. In untreated mice, seizures became longer over time. Moderate to severe histopathology was observed in the amygdala, piriform cortex, and CA1. Levetiracetam provided modest improvements in neurological parameters such as reduced spike rate and improved histopathology scores, whereas valproic acid and phenobarbital were largely ineffective. CONCLUSIONS This model of post-SE spontaneous recurrent seizures differs from other experimental models in the brief latency to seizure development, the occurrence of seizures in 100 % of exposed animals, and the lack of damage to CA4/dentate gyrus. It may serve as a useful tool for rapidly and efficiently screening novel therapies that would be effective against severe epilepsy cases.
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Affiliation(s)
- Hilary S McCarren
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States.
| | - Margaret R Eisen
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Dominique L Nguyen
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Parker B Dubée
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Cherish E Ardinger
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Emily N Dunn
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Kari M Haines
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Antonia N Santoro
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Paige M Bodner
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Celinia A Ondeck
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Cary L Honnold
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - John H McDonough
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Phillip H Beske
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
| | - Patrick M McNutt
- United States Army Medical Research Institute of Chemical Defense, 8350 Ricketts Point Rd Aberdeen Proving Ground, MD, 21010, United States
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Cava C, Manna I, Gambardella A, Bertoli G, Castiglioni I. Potential Role of miRNAs as Theranostic Biomarkers of Epilepsy. MOLECULAR THERAPY-NUCLEIC ACIDS 2018; 13:275-290. [PMID: 30321815 PMCID: PMC6197620 DOI: 10.1016/j.omtn.2018.09.008] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 02/20/2018] [Revised: 09/11/2018] [Accepted: 09/11/2018] [Indexed: 12/18/2022]
Abstract
Epilepsy includes a group of disorders of the brain characterized by an enduring predisposition to generate epileptic seizures. Although familial epilepsy has a genetic component and heritability, the etiology of the majority of non-familial epilepsies has no known associated genetic mutations. In epilepsy, recent epigenetic profiles have highlighted a possible role of microRNAs in its pathophysiology. In particular, molecular profiling identifies a significant number of microRNAs (miRNAs) altered in epileptic hippocampus of both animal models and human tissues. In this review, analyzing molecular profiles of different animal models of epilepsy, we identified a group of 20 miRNAs commonly altered in different epilepsy-animal models. As emerging evidences highlighted the poor overlap between signatures of animal model tissues and human samples, we focused our analysis on miRNAs, circulating in human biofluids, with a principal role in epilepsy hallmarks, and we identified a group of 8 diagnostic circulating miRNAs. We discussed the functional role of these 8 miRNAs in the epilepsy hallmarks. A few of them have also been proposed as therapeutic molecules for epilepsy treatment, revealing a great potential for miRNAs as theranostic molecules in epilepsy.
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Affiliation(s)
- Claudia Cava
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Milan, Italy
| | - Ida Manna
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Section of Germaneto, 88100 Catanzaro, Italy
| | - Antonio Gambardella
- Institute of Neurology, Department of Medical and Surgical Sciences, University "Magna Graecia," Germaneto, 88100 Catanzaro, Italy.
| | - Gloria Bertoli
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Milan, Italy.
| | - Isabella Castiglioni
- Institute of Molecular Bioimaging and Physiology (IBFM), National Research Council (CNR), Milan, Italy
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