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Cuinat S, Bézieau S, Deb W, Mercier S, Vignard V, Isidor B, Küry S, Ebstein F. Understanding neurodevelopmental proteasomopathies as new rare disease entities: A review of current concepts, molecular biomarkers, and perspectives. Genes Dis 2024; 11:101130. [PMID: 39220754 PMCID: PMC11364055 DOI: 10.1016/j.gendis.2023.101130] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2023] [Revised: 07/30/2023] [Accepted: 08/19/2023] [Indexed: 09/04/2024] Open
Abstract
The recent advances in high throughput sequencing technology have drastically changed the practice of medical diagnosis, allowing for rapid identification of hundreds of genes causing human diseases. This unprecedented progress has made clear that most forms of intellectual disability that affect more than 3% of individuals worldwide are monogenic diseases. Strikingly, a substantial fraction of the mendelian forms of intellectual disability is associated with genes related to the ubiquitin-proteasome system, a highly conserved pathway made up of approximately 1200 genes involved in the regulation of protein homeostasis. Within this group is currently emerging a new class of neurodevelopmental disorders specifically caused by proteasome pathogenic variants which we propose to designate "neurodevelopmental proteasomopathies". Besides cognitive impairment, these diseases are typically associated with a series of syndromic clinical manifestations, among which facial dysmorphism, motor delay, and failure to thrive are the most prominent ones. While recent efforts have been made to uncover the effects exerted by proteasome variants on cell and tissue landscapes, the molecular pathogenesis of neurodevelopmental proteasomopathies remains ill-defined. In this review, we discuss the cellular changes typically induced by genomic alterations in proteasome genes and explore their relevance as biomarkers for the diagnosis, management, and potential treatment of these new rare disease entities.
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Affiliation(s)
- Silvestre Cuinat
- Nantes Université, CHU Nantes, Service de Génétique Médicale, Nantes F-44000, France
- Nantes Université, CHU Nantes, CNRS, INSERM, l'institut du thorax, Nantes F-44000, France
| | - Stéphane Bézieau
- Nantes Université, CHU Nantes, Service de Génétique Médicale, Nantes F-44000, France
- Nantes Université, CHU Nantes, CNRS, INSERM, l'institut du thorax, Nantes F-44000, France
| | - Wallid Deb
- Nantes Université, CHU Nantes, Service de Génétique Médicale, Nantes F-44000, France
- Nantes Université, CHU Nantes, CNRS, INSERM, l'institut du thorax, Nantes F-44000, France
| | - Sandra Mercier
- Nantes Université, CHU Nantes, Service de Génétique Médicale, Nantes F-44000, France
- Nantes Université, CHU Nantes, CNRS, INSERM, l'institut du thorax, Nantes F-44000, France
| | - Virginie Vignard
- Nantes Université, CHU Nantes, Service de Génétique Médicale, Nantes F-44000, France
- Nantes Université, CHU Nantes, CNRS, INSERM, l'institut du thorax, Nantes F-44000, France
| | - Bertrand Isidor
- Nantes Université, CHU Nantes, Service de Génétique Médicale, Nantes F-44000, France
- Nantes Université, CHU Nantes, CNRS, INSERM, l'institut du thorax, Nantes F-44000, France
| | - Sébastien Küry
- Nantes Université, CHU Nantes, Service de Génétique Médicale, Nantes F-44000, France
- Nantes Université, CHU Nantes, CNRS, INSERM, l'institut du thorax, Nantes F-44000, France
| | - Frédéric Ebstein
- Nantes Université, CHU Nantes, CNRS, INSERM, l'institut du thorax, Nantes F-44000, France
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Tian Y, Qiao H, Zhu LQ, Man HY. Sexually dimorphic phenotypes and the role of androgen receptors in UBE3A-dependent autism spectrum disorder. BIORXIV : THE PREPRINT SERVER FOR BIOLOGY 2024:2024.05.02.592248. [PMID: 38746146 PMCID: PMC11092617 DOI: 10.1101/2024.05.02.592248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/16/2024]
Abstract
Autism spectrum disorders (ASDs) are characterized by social, communication, and behavioral challenges. UBE3A is one of the most common ASD genes. ASDs display a remarkable sex difference with a 4:1 male to female prevalence ratio; however, the underlying mechanism remains largely unknown. Using the UBE3A-overexpressing mouse model for ASD, we studied sex differences at behavioral, genetic, and molecular levels. We found that male mice with extra copies of Ube3A exhibited greater impairments in social interaction, repetitive self-grooming behavior, memory, and pain sensitivity, whereas female mice with UBE3A overexpression displayed greater olfactory defects. Social communication was impaired in both sexes, with males making more calls and females preferring complex syllables. At the molecular level, androgen receptor (AR) levels were reduced in both sexes due to enhanced degradation mediated by UBE3A. However, AR reduction significantly dysregulated AR target genes only in male, not female, UBE3A-overexpressing mice. Importantly, restoring AR levels in the brain effectively normalized the expression of AR target genes, and rescued the deficits in social preference, grooming behavior, and memory in male UBE3A-overexpressing mice, without affecting females. These findings suggest that AR and its signaling cascade play an essential role in mediating the sexually dimorphic changes in UBE3A-dependent ASD.
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Affiliation(s)
- Yuan Tian
- Department of Biology, Boston University, 5 Cummington Mall, Boston, MA 02215, USA
| | - Hui Qiao
- Department of Biology, Boston University, 5 Cummington Mall, Boston, MA 02215, USA
| | - Ling-Qiang Zhu
- Department of Pathophysiology, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, Hubei 430030, China
| | - Heng-Ye Man
- Department of Biology, Boston University, 5 Cummington Mall, Boston, MA 02215, USA
- Department of Pharmacology, Physiology & Biophysics, Boston University School of Medicine, 72 East Concord St., Boston, MA 02118, USA
- Center for Systems Neuroscience, Boston University, 610 Commonwealth Ave, Boston, MA 02215, USA
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Cuinat S, Bézieau S, Deb W, Mercier S, Vignard V, Toutain B, Isidor B, Küry S, Ebstein F. [Neurodevelopmental proteasomopathies: New disorders caused by proteasome dysfunction]. Med Sci (Paris) 2024; 40:176-185. [PMID: 38411426 DOI: 10.1051/medsci/2023221] [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] [Indexed: 02/28/2024] Open
Abstract
The ubiquitin-proteasome system (UPS) is a conserved degradation pathway in eukaryotes, playing a central role in various cellular processes, including maintaining protein homeostasis, regulating the cell cycle and signaling pathways, as well as orchestrating cell survival and death. Proteins targeted for UPS-mediated degradation undergo ubiquitin chain modification before being degraded by 26S proteasomes. Recently, a correlation has emerged between pathogenic proteasome variants and the onset of neurodevelopmental disorders. Termed "neurodevelopmental proteasomopathies", these syndromes are rare and characterized by delayed psychomotor development, behavioral disorders, facial dysmorphia, and multisystemic anomalies. In this review, we examine current knowledge on proteasomal dysfunctions and assess their relevance in the search for biomarkers for the diagnosis and potential treatment of these syndromic proteasomopathies.
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Affiliation(s)
- Silvestre Cuinat
- Nantes Université, CHU Nantes, Service de génétique médicale, Nantes, France - Nantes Université, CNRS, Inserm, Institut du thorax, IRS-UN, Nantes, France
| | - Stéphane Bézieau
- Nantes Université, CHU Nantes, Service de génétique médicale, Nantes, France - Nantes Université, CNRS, Inserm, Institut du thorax, IRS-UN, Nantes, France
| | - Wallid Deb
- Nantes Université, CHU Nantes, Service de génétique médicale, Nantes, France - Nantes Université, CNRS, Inserm, Institut du thorax, IRS-UN, Nantes, France
| | - Sandra Mercier
- Nantes Université, CHU Nantes, Service de génétique médicale, Nantes, France - Nantes Université, CNRS, Inserm, Institut du thorax, IRS-UN, Nantes, France
| | - Virginie Vignard
- Nantes Université, CHU Nantes, Service de génétique médicale, Nantes, France - Nantes Université, CNRS, Inserm, Institut du thorax, IRS-UN, Nantes, France
| | - Bérénice Toutain
- Nantes Université, CNRS, Inserm, Institut du thorax, IRS-UN, Nantes, France
| | - Bertrand Isidor
- Nantes Université, CHU Nantes, Service de génétique médicale, Nantes, France - Nantes Université, CNRS, Inserm, Institut du thorax, IRS-UN, Nantes, France
| | - Sébastien Küry
- Nantes Université, CHU Nantes, Service de génétique médicale, Nantes, France - Nantes Université, CNRS, Inserm, Institut du thorax, IRS-UN, Nantes, France
| | - Frédéric Ebstein
- Nantes Université, CNRS, Inserm, Institut du thorax, IRS-UN, Nantes, France
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Aharoni S, Proskorovski-Ohayon R, Krishnan RK, Yogev Y, Wormser O, Hadar N, Bakhrat A, Alshafee I, Gombosh M, Agam N, Gradstein L, Shorer Z, Zarivach R, Eskin-Schwartz M, Abdu U, Birk OS. PSMC1 variant causes a novel neurological syndrome. Clin Genet 2022; 102:324-332. [PMID: 35861243 PMCID: PMC9541193 DOI: 10.1111/cge.14195] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2022] [Revised: 07/15/2022] [Accepted: 07/18/2022] [Indexed: 11/27/2022]
Abstract
Proteasome 26S, the eukaryotic proteasome, serves as the machinery for cellular protein degradation. It is composed of the 20S core particle and one or two 19S regulatory particles, composed of a base and a lid. To date, several human diseases have been associated with mutations within the 26S proteasome subunits; only one of them affects a base subunit. We now delineate an autosomal recessive syndrome of failure to thrive, severe developmental delay and intellectual disability, spastic tetraplegia with central hypotonia, chorea, hearing loss, micropenis and undescended testes, as well as mild elevation of liver enzymes. None of the affected individuals achieved verbal communication or ambulation. Ventriculomegaly was evident on MRI. Homozygosity mapping combined with exome sequencing revealed a disease‐associated p.I328T PSMC1 variant. Protein modeling demonstrated that the PSMC1 variant is located at the highly conserved putative ATP binding and hydrolysis domain, and is suggested to interrupt a hydrophobic core within the protein. Fruit flies in which we silenced the Drosophila ortholog Rpt2 specifically in the eye exhibited an apparent phenotype that was highly rescued by the human wild‐type PSMC1, yet only partly by the mutant PSMC1, proving the functional effect of the p.I328T disease‐causing variant.
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Affiliation(s)
- Sarit Aharoni
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Regina Proskorovski-Ohayon
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ramesh Kumar Krishnan
- Department of Life Sciences, Faculty of Natural Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Yuval Yogev
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad Wormser
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Noam Hadar
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Anna Bakhrat
- Department of Life Sciences, Faculty of Natural Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Ismael Alshafee
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Maya Gombosh
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Nadav Agam
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Libe Gradstein
- Department of Ophthalmology, Soroka University Medical Center and Clalit Health Services, Ben-Gurion University of the Negev, Beer-Sheva, Israel
| | - Zamir Shorer
- Pediatric Neurology Unit, Division of Pediatrics, Soroka Medical Center, Beer-sheva, Israel
| | - Raz Zarivach
- Department of Life Sciences, Faculty of Natural Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Marina Eskin-Schwartz
- Genetics Institute, Soroka Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
| | - Uri Abdu
- Department of Life Sciences, Faculty of Natural Sciences, Ben Gurion University of the Negev, Beer Sheva, Israel
| | - Ohad S Birk
- The Morris Kahn Laboratory of Human Genetics, National Institute for Biotechnology in the Negev and Faculty of Health Sciences, Ben-Gurion University of the Negev, Beer Sheva, Israel.,Genetics Institute, Soroka Medical Center, Ben-Gurion University of the Negev, Beer Sheva, Israel
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