1
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Sprunger ML, Jackrel ME. The role of Matrin-3 in physiology and its dysregulation in disease. Biochem Soc Trans 2024:BST20220585. [PMID: 38813817 DOI: 10.1042/bst20220585] [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: 03/27/2024] [Revised: 05/08/2024] [Accepted: 05/13/2024] [Indexed: 05/31/2024]
Abstract
The dysfunction of many RNA-binding proteins (RBPs) that are heavily disordered, including TDP-43 and FUS, are implicated in amyotrophic lateral sclerosis and frontotemporal dementia (ALS/FTD). These proteins serve many important roles in the cell, and their capacity to form biomolecular condensates (BMCs) is key to their function, but also a vulnerability that can lead to misregulation and disease. Matrin-3 (MATR3) is an intrinsically disordered RBP implicated both genetically and pathologically in ALS/FTD, though it is relatively understudied as compared with TDP-43 and FUS. In addition to binding RNA, MATR3 also binds DNA and is implicated in many cellular processes including the DNA damage response, transcription, splicing, and cell differentiation. It is unclear if MATR3 localizes to BMCs under physiological conditions, which is brought further into question due to its lack of a prion-like domain. Here, we review recent studies regarding MATR3 and its roles in numerous physiological processes, as well as its implication in a range of diseases.
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Affiliation(s)
- Macy L Sprunger
- Department of Chemistry, Washington University, St. Louis, MO 63130, U.S.A
| | - Meredith E Jackrel
- Department of Chemistry, Washington University, St. Louis, MO 63130, U.S.A
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2
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Mubaid S, Sanchez BJ, Algehani RA, Skopenkova V, Adjibade P, Hall DT, Busque S, Lian XJ, Ashour K, Tremblay AMK, Carlile G, Gagné JP, Diaz-Gaxiola A, Khattak S, Di Marco S, Thomas DY, Poirier GG, Gallouzi IE. Tankyrase-1 regulates RBP-mediated mRNA turnover to promote muscle fiber formation. Nucleic Acids Res 2024; 52:4002-4020. [PMID: 38321934 DOI: 10.1093/nar/gkae059] [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: 12/15/2022] [Accepted: 01/19/2024] [Indexed: 02/08/2024] Open
Abstract
Poly(ADP-ribosylation) (PARylation) is a post-translational modification mediated by a subset of ADP-ribosyl transferases (ARTs). Although PARylation-inhibition based therapies are considered as an avenue to combat debilitating diseases such as cancer and myopathies, the role of this modification in physiological processes such as cell differentiation remains unclear. Here, we show that Tankyrase1 (TNKS1), a PARylating ART, plays a major role in myogenesis, a vital process known to drive muscle fiber formation and regeneration. Although all bona fide PARPs are expressed in muscle cells, experiments using siRNA-mediated knockdown or pharmacological inhibition show that TNKS1 is the enzyme responsible of catalyzing PARylation during myogenesis. Via this activity, TNKS1 controls the turnover of mRNAs encoding myogenic regulatory factors such as nucleophosmin (NPM) and myogenin. TNKS1 mediates these effects by targeting RNA-binding proteins such as Human Antigen R (HuR). HuR harbors a conserved TNKS-binding motif (TBM), the mutation of which not only prevents the association of HuR with TNKS1 and its PARylation, but also precludes HuR from regulating the turnover of NPM and myogenin mRNAs as well as from promoting myogenesis. Therefore, our data uncover a new role for TNKS1 as a key modulator of RBP-mediated post-transcriptional events required for vital processes such as myogenesis.
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Affiliation(s)
- Souad Mubaid
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Brenda Janice Sanchez
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
| | - Rinad A Algehani
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
| | - Viktoriia Skopenkova
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
| | - Pauline Adjibade
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Derek T Hall
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Sandrine Busque
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Xian Jin Lian
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Kholoud Ashour
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Anne-Marie K Tremblay
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - Graeme Carlile
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
| | - Jean-Philippe Gagné
- Centre de recherche du CHU de Québec-Pavillon CHUL, Faculté de Médecine, Université Laval, Québec G1V 4G2, Canada
| | - Andrea Diaz-Gaxiola
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
| | - Shahryar Khattak
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
| | - Sergio Di Marco
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
| | - David Y Thomas
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
| | - Guy G Poirier
- Centre de recherche du CHU de Québec-Pavillon CHUL, Faculté de Médecine, Université Laval, Québec G1V 4G2, Canada
| | - Imed-Eddine Gallouzi
- KAUST Smart-Health Initiative (KSHI) and Biological and Environmental Science and Engineering (BESE) Division, King Abdullah University of Science and Technology (KAUST), Jeddah, Saudi Arabia
- Dept. of Biochemistry, McGill University, 3655 Promenade Sir William Osler, Montreal, QC H3G 1Y6, Canada
- Rosalind & Morris Goodman Cancer Institute, McGill University, 1160 Pine Avenue, Montreal, QC H3A 1A3, Canada
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3
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Izumi R, Ikeda K, Niihori T, Suzuki N, Shirota M, Funayama R, Nakayama K, Warita H, Tateyama M, Aoki Y, Aoki M. Nuclear pore pathology underlying multisystem proteinopathy type 3-related inclusion body myopathy. Ann Clin Transl Neurol 2024; 11:577-592. [PMID: 38158701 DOI: 10.1002/acn3.51977] [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: 10/14/2023] [Revised: 11/28/2023] [Accepted: 12/05/2023] [Indexed: 01/03/2024] Open
Abstract
OBJECTIVE Multisystem proteinopathy type 3 (MSP3) is an inherited, pleiotropic degenerative disorder caused by a mutation in heterogeneous nuclear ribonucleoprotein A1 (hnRNPA1), which can affect the muscle, bone, and/or nervous system. This study aimed to determine detailed histopathological features and transcriptomic profile of HNRNPA1-mutated skeletal muscles to reveal the core pathomechanism of hereditary inclusion body myopathy (hIBM), a predominant phenotype of MSP3. METHODS Histopathological analyses and RNA sequencing of HNRNPA1-mutated skeletal muscles harboring a c.940G > A (p.D314N) mutation (NM_031157) were performed, and the results were compared with those of HNRNPA1-unlinked hIBM and control muscle tissues. RESULTS RNA sequencing revealed aberrant alternative splicing events that predominantly occurred in myofibril components and mitochondrial respiratory complex. Enrichment analyses identified the nuclear pore complex (NPC) and nucleocytoplasmic transport as suppressed pathways. These two pathways were linked by the hub genes NUP50, NUP98, NUP153, NUP205, and RanBP2. In immunohistochemistry, these nucleoporin proteins (NUPs) were mislocalized to the cytoplasm and aggregated mostly with TAR DNA-binding protein 43 kDa and, to a lesser extent, with hnRNPA1. Based on ultrastructural observation, irregularly shaped myonuclei with deep invaginations were frequently observed in atrophic fibers, consistent with the disorganization of NPCs. Additionally, regarding the expression profiles of overall NUPs, reduced expression of NUP98, NUP153, and RanBP2 was shared with HNRNPA1-unlinked hIBMs. INTERPRETATION The shared subset of altered NUPs in amyotrophic lateral sclerosis (ALS), as demonstrated in prior research, HNRNPA1-mutated, and HNRNPA1-unlinked hIBM muscle tissues may provide evidence regarding the underlying common nuclear pore pathology of hIBM, ALS, and MSP.
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Grants
- KAKENHI (20K16571) Grant-in-Aid for Early-Career Scientists from Japan Society for the Promotion of Science (JSPS)
- KAKENHI (20H03586) Grant-in-Aid for Scientific Research (B) from Japan Society for the Promotion of Science (JSPS)
- KAKENHI (23H02821) Grant-in-Aid for Scientific Research (B) from Japan Society for the Promotion of Science (JSPS)
- KAKENHI (20K07897) Grant-in-Aid for Scientific Research (C) from Japan Society for the Promotion of Science (JSPS)
- 23FC1008 Grants-in-Aid from the Research Committee of CNS Degenerative Diseases, Research on Policy Planning and Evaluation for Rare and Intractable Diseases, Health, Labour and Welfare Sciences Research Grants, the Ministry of Health, Labour and Welfare, Japan
- 23FC1010 Grants-in-Aid from the Research Committee of CNS Degenerative Diseases, Research on Policy Planning and Evaluation for Rare and Intractable Diseases, Health, Labour and Welfare Sciences Research Grants, the Ministry of Health, Labour and Welfare, Japan
- 20FC1036 Grants-in-Aid for Research on Rare and Intractable Diseases from the Ministry of Health, Labour and Welfare of Japan
- 23FC1014 Grants-in-Aid for Research on Rare and Intractable Diseases from the Ministry of Health, Labour and Welfare of Japan
- Haruki ALS Research Foundation
- 2-5 Intramural Research Grant for Neurological and Psychiatric Disorders Provided from National Center of Neurology and Psychiatry of Japan
- 5-6 Intramural Research Grant for Neurological and Psychiatric Disorders Provided from National Center of Neurology and Psychiatry of Japan
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Affiliation(s)
- Rumiko Izumi
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
- Department of Medical Genetics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Kensuke Ikeda
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Tetsuya Niihori
- Department of Medical Genetics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Naoki Suzuki
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Matsuyuki Shirota
- Division of Interdisciplinary Medical Science, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Ryo Funayama
- Division of Cell Proliferation, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Keiko Nakayama
- Division of Cell Proliferation, United Centers for Advanced Research and Translational Medicine, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Hitoshi Warita
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Maki Tateyama
- Department of Neurology, National Hospital Organization Iwate Hospital, Ichinoseki, Japan
| | - Yoko Aoki
- Department of Medical Genetics, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masashi Aoki
- Department of Neurology, Tohoku University Graduate School of Medicine, Sendai, Japan
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Khan M, Chen XXL, Dias M, Santos JR, Kour S, You J, van Bruggen R, Youssef MMM, Wan YW, Liu Z, Rosenfeld JA, Tan Q, Pandey UB, Yalamanchili HK, Park J. MATR3 pathogenic variants differentially impair its cryptic splicing repression function. FEBS Lett 2024; 598:415-436. [PMID: 38320753 DOI: 10.1002/1873-3468.14806] [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: 12/06/2023] [Accepted: 01/03/2024] [Indexed: 02/28/2024]
Abstract
Matrin-3 (MATR3) is an RNA-binding protein implicated in neurodegenerative and neurodevelopmental diseases. However, little is known regarding the role of MATR3 in cryptic splicing within the context of functional genes and how disease-associated variants impact this function. We show that loss of MATR3 leads to cryptic exon inclusion in many transcripts. We reveal that ALS-linked S85C pathogenic variant reduces MATR3 solubility but does not impair RNA binding. In parallel, we report a novel neurodevelopmental disease-associated M548T variant, located in the RRM2 domain, which reduces protein solubility and impairs RNA binding and cryptic splicing repression functions of MATR3. Altogether, our research identifies cryptic events within functional genes and demonstrates how disease-associated variants impact MATR3 cryptic splicing repression function.
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Affiliation(s)
- Mashiat Khan
- Department of Molecular Genetics, University of Toronto, Canada
- Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, Canada
| | - Xiao Xiao Lily Chen
- Department of Molecular Genetics, University of Toronto, Canada
- Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, Canada
| | - Michelle Dias
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Jan and Dan Duncan Neurological Research Institute at Texas Children's Hospital, Houston, TX, USA
| | - Jhune Rizsan Santos
- Department of Molecular Genetics, University of Toronto, Canada
- Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, Canada
| | - Sukhleen Kour
- Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Justin You
- Department of Molecular Genetics, University of Toronto, Canada
- Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, Canada
| | - Rebekah van Bruggen
- Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, Canada
| | - Mohieldin M M Youssef
- Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, Canada
| | - Ying-Wooi Wan
- Jan and Dan Duncan Neurological Research Institute at Texas Children's Hospital, Houston, TX, USA
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
| | - Zhandong Liu
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Jan and Dan Duncan Neurological Research Institute at Texas Children's Hospital, Houston, TX, USA
| | - Jill A Rosenfeld
- Department of Molecular and Human Genetics, Baylor College of Medicine, Houston, TX, USA
- Baylor Genetics Laboratories, Houston, TX, USA
| | - Qiumin Tan
- Department of Cell Biology, University of Alberta, Edmonton, Canada
| | - Udai Bhan Pandey
- Department of Pediatrics, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
- Department of Human Genetics, University of Pittsburgh, School of Public Health, Pittsburgh, PA, USA
| | - Hari Krishna Yalamanchili
- Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
- Jan and Dan Duncan Neurological Research Institute at Texas Children's Hospital, Houston, TX, USA
- USDA/ARS Children's Nutrition Research Center, Department of Pediatrics, Baylor College of Medicine, Houston, TX, USA
| | - Jeehye Park
- Department of Molecular Genetics, University of Toronto, Canada
- Peter Gilgan Centre for Research and Learning, The Hospital for Sick Children, Toronto, Canada
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5
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He H, Jamal M, Zeng X, Lei Y, Xiao D, Wei Z, Zhang C, Zhang X, Pan S, Ding Q, Tan H, Xie S, Zhang Q. Matrin-3 acts as a potential biomarker and promotes hepatocellular carcinoma progression by interacting with cell cycle-regulating genes. Cell Cycle 2024; 23:15-35. [PMID: 38252499 PMCID: PMC11005806 DOI: 10.1080/15384101.2024.2305535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 01/09/2024] [Indexed: 01/24/2024] Open
Abstract
Hepatocellular carcinoma (HCC) is one of the leading causes of cancer-related mortality worldwide. The oncogenic role of Matrin-3 (MATR3), an a nuclear matrix protein, in HCC remains largely unknown. Here, we document the biological function of MATR3 in HCC based on integrated bioinformatics analysis and functional studies. According to the TCGA database, MATR3 expression was found to be positively correlated with clinicopathological characteristics in HCC. The receiver operating characteristic (ROC) curve and Kaplan-Meier (KM) curve displayed the diagnostic and prognostic potentials of MATR3 in HCC patients, respectively. Pathway enrichment analysis represented the enrichment of MATR3 in various molecular pathways, including the regulation of the cell cycle. Functional assays in HCC cell lines showed reduced proliferation of cells with stable silencing of MATR3. At the same time, the suppressive effects of MATR3 depletion on HCC development were verified by xenograft tumor experiments. Moreover, MATR3 repression also resulted in cell cycle arrest by modulating the expression of cell cycle-associated genes. In addition, the interaction of MATR3 with cell cycle-regulating factors in HCC cells was further corroborated with co-immunoprecipitation and mass spectrometry (Co-IP/MS). Furthermore, CIBERSORT and TIMER analyses showed an association between MATR3 and immune infiltration in HCC. In general, this study highlights the novel oncogenic function of MATR3 in HCC, which could comprehensively address how aberrant changes in the cell cycle promote HCC development. MATR3 might serve as a prognostic predictor and therapeutic target for HCC patients.
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Affiliation(s)
- Hengjing He
- Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Muhammad Jamal
- Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Xingruo Zeng
- Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Yufei Lei
- Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Di Xiao
- Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Zimeng Wei
- Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Chengjie Zhang
- Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Xiaoyu Zhang
- Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
| | - Shan Pan
- School of Medicine, Wuhan University of Science and Technology, Wuhan, China
| | - Qianshan Ding
- School of Medicine, Northwest University, Xian, China
| | - Haiyan Tan
- Gastrointestinal Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Songping Xie
- Department of Thoracic Surgery, Renmin Hospital of Wuhan University, Wuhan, China
| | - Qiuping Zhang
- Department of Immunology, School of Basic Medical Sciences, Wuhan University, Wuhan, China
- Hubei Provincial Key Laboratory of Developmentally Originated Disease, Wuhan University, Wuhan, China
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6
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Runfola V, Giambruno R, Caronni C, Pannese M, Andolfo A, Gabellini D. MATR3 is an endogenous inhibitor of DUX4 in FSHD muscular dystrophy. Cell Rep 2023; 42:113120. [PMID: 37703175 PMCID: PMC10591880 DOI: 10.1016/j.celrep.2023.113120] [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: 03/28/2023] [Revised: 07/07/2023] [Accepted: 08/25/2023] [Indexed: 09/15/2023] Open
Abstract
Facioscapulohumeral muscular dystrophy (FSHD) is one of the most common neuromuscular disorders and has no cure. Due to an unknown molecular mechanism, FSHD displays overlapping manifestations with the neurodegenerative disease amyotrophic lateral sclerosis (ALS). FSHD is caused by aberrant gain of expression of the transcription factor double homeobox 4 (DUX4), which triggers a pro-apoptotic transcriptional program resulting in inhibition of myogenic differentiation and muscle wasting. Regulation of DUX4 activity is poorly known. We identify Matrin 3 (MATR3), whose mutation causes ALS and dominant distal myopathy, as a cellular factor controlling DUX4 expression and activity. MATR3 binds to the DUX4 DNA-binding domain and blocks DUX4-mediated gene expression, rescuing cell viability and myogenic differentiation of FSHD muscle cells, without affecting healthy muscle cells. Finally, we characterize a shorter MATR3 fragment that is necessary and sufficient to directly block DUX4-induced toxicity to the same extent as the full-length protein. Collectively, our data suggest MATR3 as a candidate for developing a treatment for FSHD.
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Affiliation(s)
- Valeria Runfola
- Gene Expression and Muscular Dystrophy Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Roberto Giambruno
- Gene Expression and Muscular Dystrophy Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy; Center for Genomic Science of IIT@SEMM, Fondazione Istituto Italiano di Tecnologia, Milan, Italy
| | - Claudia Caronni
- Gene Expression and Muscular Dystrophy Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Maria Pannese
- Gene Expression and Muscular Dystrophy Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Annapaola Andolfo
- ProMeFa, Proteomics and Metabolomics Facility, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy
| | - Davide Gabellini
- Gene Expression and Muscular Dystrophy Unit, Division of Genetics and Cell Biology, IRCCS San Raffaele Scientific Institute, 20132 Milan, Italy.
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7
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Malik AM, Wu JJ, Gillies CA, Doctrove QA, Li X, Huang H, Tank EHM, Shakkottai VG, Barmada S. Neuronal activity regulates Matrin 3 abundance and function in a calcium-dependent manner through calpain-mediated cleavage and calmodulin binding. Proc Natl Acad Sci U S A 2023; 120:e2206217120. [PMID: 37011198 PMCID: PMC10104577 DOI: 10.1073/pnas.2206217120] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/08/2022] [Accepted: 02/14/2023] [Indexed: 04/05/2023] Open
Abstract
RNA-binding protein (RBP) dysfunction is a fundamental hallmark of amyotrophic lateral sclerosis (ALS) and related neuromuscular disorders. Abnormal neuronal excitability is also a conserved feature in ALS patients and disease models, yet little is known about how activity-dependent processes regulate RBP levels and functions. Mutations in the gene encoding the RBP Matrin 3 (MATR3) cause familial disease, and MATR3 pathology has also been observed in sporadic ALS, suggesting a key role for MATR3 in disease pathogenesis. Here, we show that glutamatergic activity drives MATR3 degradation through an NMDA receptor-, Ca2+-, and calpain-dependent mechanism. The most common pathogenic MATR3 mutation renders it resistant to calpain degradation, suggesting a link between activity-dependent MATR3 regulation and disease. We also demonstrate that Ca2+ regulates MATR3 through a nondegradative process involving the binding of Ca2+/calmodulin to MATR3 and inhibition of its RNA-binding ability. These findings indicate that neuronal activity impacts both the abundance and function of MATR3, underscoring the effect of activity on RBPs and providing a foundation for further study of Ca2+-coupled regulation of RBPs implicated in ALS and related neurological diseases.
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Affiliation(s)
- Ahmed M. Malik
- Medical Scientist Training Program, University of Michigan, Ann Arbor, MI48109
- Neuroscience Graduate Program, University of Michigan, Ann Arbor, MI48109
- Department of Neurology, University of Michigan, Ann Arbor, MI48109
| | - Josephine J. Wu
- Department of Neurology, University of Michigan, Ann Arbor, MI48109
- Cellular and Molecular Biology Graduate Program, University of Michigan, Ann Arbor, MI48109
| | - Christie A. Gillies
- College of Literature, Science, and the Arts, University of Michigan, Ann Arbor, MI48109
| | - Quinlan A. Doctrove
- Neuroscience Graduate Program, University of Michigan, Ann Arbor, MI48109
- Postbac Research Education Program, University of Michigan, Ann Arbor, MI48109
| | - Xingli Li
- Department of Neurology, University of Michigan, Ann Arbor, MI48109
| | - Haoran Huang
- University of Texas Southwestern Medical Center, Dallas, TX 75390
| | | | | | - Sami Barmada
- Neuroscience Graduate Program, University of Michigan, Ann Arbor, MI48109
- Department of Neurology, University of Michigan, Ann Arbor, MI48109
- Cellular and Molecular Biology Graduate Program, University of Michigan, Ann Arbor, MI48109
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8
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Taliani V, Buonaiuto G, Desideri F, Setti A, Santini T, Galfrè S, Schirone L, Mariani D, Frati G, Valenti V, Sciarretta S, Perlas E, Nicoletti C, Musarò A, Ballarino M. The long noncoding RNA Charme supervises cardiomyocyte maturation by controlling cell differentiation programs in the developing heart. eLife 2023; 12:81360. [PMID: 36877136 PMCID: PMC10023161 DOI: 10.7554/elife.81360] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2022] [Accepted: 03/03/2023] [Indexed: 03/07/2023] Open
Abstract
Long noncoding RNAs (lncRNAs) are emerging as critical regulators of heart physiology and disease, although the studies unveiling their modes of action are still limited to few examples. We recently identified pCharme, a chromatin-associated lncRNA whose functional knockout in mice results in defective myogenesis and morphological remodeling of the cardiac muscle. Here, we combined Cap-Analysis of Gene Expression (CAGE), single-cell (sc)RNA sequencing, and whole-mount in situ hybridization analyses to study pCharme cardiac expression. Since the early steps of cardiomyogenesis, we found the lncRNA being specifically restricted to cardiomyocytes, where it assists the formation of specific nuclear condensates containing MATR3, as well as important RNAs for cardiac development. In line with the functional significance of these activities, pCharme ablation in mice results in a delayed maturation of cardiomyocytes, which ultimately leads to morphological alterations of the ventricular myocardium. Since congenital anomalies in myocardium are clinically relevant in humans and predispose patients to major complications, the identification of novel genes controlling cardiac morphology becomes crucial. Our study offers unique insights into a novel lncRNA-mediated regulatory mechanism promoting cardiomyocyte maturation and bears relevance to Charme locus for future theranostic applications.
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Affiliation(s)
- Valeria Taliani
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of RomeRomeItaly
| | - Giulia Buonaiuto
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of RomeRomeItaly
| | - Fabio Desideri
- Center for Life Nano- and Neuro-Science, Istituto Italiano di Tecnologia (IIT)RomeItaly
| | - Adriano Setti
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of RomeRomeItaly
| | - Tiziana Santini
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of RomeRomeItaly
| | - Silvia Galfrè
- Center for Life Nano- and Neuro-Science, Istituto Italiano di Tecnologia (IIT)RomeItaly
| | - Leonardo Schirone
- Department of Medical Surgical Sciences and Biotechnologies, Sapienza University of RomeLatinaItaly
| | - Davide Mariani
- Center for Human Technologies, Istituto Italiano di TecnologiaGenovaItaly
| | - Giacomo Frati
- Department of Medical Surgical Sciences and Biotechnologies, Sapienza University of RomeLatinaItaly
| | - Valentina Valenti
- Department of Medical Surgical Sciences and Biotechnologies, Sapienza University of RomeLatinaItaly
| | - Sebastiano Sciarretta
- Department of Medical Surgical Sciences and Biotechnologies, Sapienza University of RomeLatinaItaly
| | - Emerald Perlas
- Epigenetics and Neurobiology Unit, EMBL-RomeMonterotondoItaly
| | - Carmine Nicoletti
- DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of RomeRomeItaly
| | - Antonio Musarò
- DAHFMO-Unit of Histology and Medical Embryology, Sapienza University of RomeRomeItaly
| | - Monica Ballarino
- Department of Biology and Biotechnologies “Charles Darwin”, Sapienza University of RomeRomeItaly
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9
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Natera‐de Benito D, Olival J, Garcia‐Cabau C, Jou C, Roldan M, Codina A, Expósito‐Escudero J, Batlle C, Carrera‐García L, Ortez C, Salvatella X, Palau F, Nascimento A, Hoenicka J. Common pathophysiology for ANXA11 disorders caused by aspartate 40 variants. Ann Clin Transl Neurol 2023; 10:408-425. [PMID: 36651622 PMCID: PMC10014011 DOI: 10.1002/acn3.51731] [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: 11/17/2022] [Revised: 01/02/2023] [Accepted: 01/05/2023] [Indexed: 01/19/2023] Open
Abstract
OBJECTIVE Mutations in ANXA11 cause amyotrophic lateral sclerosis (ALS) and have recently been identified as a cause of multisystem proteinopathy and adult-onset muscular dystrophy. These conditions are adult-onset diseases and result from the substitution of Aspartate 40 (Asp40) for an apolar residue in the intrinsically disordered domain (IDD) of ANXA11. Some ALS-related variants are known to affect ANXA11 IDD; however, the mechanism by which the myopathy occurs is unknown. METHODS Genetic analysis was performed using WES-trio. For the study of variant pathogenicity, we used recombinant proteins, muscle biopsy, and fibroblasts. RESULTS Here we describe an individual with severe and rapidly progressive childhood-onset oculopharyngeal muscular dystrophy who carries a new ANXA11 variant at position Asp40 (p.Asp40Ile; c.118_119delGAinsAT). p.Asp40Ile is predicted to enhance the aggregation propensity of ANXA11 to a greater extent than other changes affecting this residue. In vitro studies using recombinant ANXA11p.Asp40Ile showed abnormal phase separation and confirmed this variant is more aggregation-prone than the ALS-associated variant ANXA11p.Asp40Gly . The study of the patient's fibroblasts revealed defects in stress granules dynamics and clearance, and muscle histopathology showed a myopathic pattern with ANXA11 protein aggregates. Super-resolution imaging showed aggregates expressed as pearl strips or large complex structures in the sarcoplasm, and as layered subsarcolemmal chains probably reflecting ANXA11 multifunctionality. INTERPRETATION We demonstrate common pathophysiology for disorders associated with ANXA11 Asp40 allelic variants. Clinical phenotypes may result from different deleterious impacts of variants upon ANXA11 stability against aggregation, and differential muscle or motor neuron dysfunction expressed as a temporal and tissue-specific continuum.
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Affiliation(s)
- Daniel Natera‐de Benito
- Neuromuscular Unit, Department of NeurologyHospital Sant Joan de DéuBarcelona08950Spain
- Applied Research in Neuromuscular DiseasesInstitut de Recerca Sant Joan de DéuBarcelona08950Spain
| | - Jonathan Olival
- Laboratory of Neurogenetics and Molecular Medicine – IPERInstitut de Recerca Sant Joan de Déu08950BarcelonaSpain
| | - Carla Garcia‐Cabau
- Institute for Research in Biomedicine (IRB Barcelona)The Barcelona Institute of Science and TechnologyBarcelona08029Spain
| | - Cristina Jou
- Applied Research in Neuromuscular DiseasesInstitut de Recerca Sant Joan de DéuBarcelona08950Spain
- Department of PathologyHospital Sant Joan de DéuBarcelona08950Spain
| | - Mònica Roldan
- Confocal Microscopy and Cellular Imaging UnitInstitut de Recerca Sant Joan de DéuBarcelona08950Spain
- Department of Genetics and Developmental Medicine – IPERHospital Sant Joan de DéuBarcelona08950Spain
| | - Anna Codina
- Applied Research in Neuromuscular DiseasesInstitut de Recerca Sant Joan de DéuBarcelona08950Spain
| | - Jessica Expósito‐Escudero
- Neuromuscular Unit, Department of NeurologyHospital Sant Joan de DéuBarcelona08950Spain
- Applied Research in Neuromuscular DiseasesInstitut de Recerca Sant Joan de DéuBarcelona08950Spain
| | - Cristina Batlle
- Laboratory of Neurogenetics and Molecular Medicine – IPERInstitut de Recerca Sant Joan de Déu08950BarcelonaSpain
| | - Laura Carrera‐García
- Neuromuscular Unit, Department of NeurologyHospital Sant Joan de DéuBarcelona08950Spain
- Applied Research in Neuromuscular DiseasesInstitut de Recerca Sant Joan de DéuBarcelona08950Spain
| | - Carlos Ortez
- Neuromuscular Unit, Department of NeurologyHospital Sant Joan de DéuBarcelona08950Spain
- Applied Research in Neuromuscular DiseasesInstitut de Recerca Sant Joan de DéuBarcelona08950Spain
- Center for Biomedical Research Network on Rare Diseases (CIBERER)ISCIIIBarcelonaSpain
| | - Xavier Salvatella
- Institute for Research in Biomedicine (IRB Barcelona)The Barcelona Institute of Science and TechnologyBarcelona08029Spain
- ICREABarcelona08010Spain
| | - Francesc Palau
- Laboratory of Neurogenetics and Molecular Medicine – IPERInstitut de Recerca Sant Joan de Déu08950BarcelonaSpain
- Department of Genetics and Developmental Medicine – IPERHospital Sant Joan de DéuBarcelona08950Spain
- Center for Biomedical Research Network on Rare Diseases (CIBERER)ISCIIIBarcelonaSpain
- Division of Pediatrics, Faculty of Medicine and Health SciencesUniversity of BarcelonaBarcelona08007Spain
- ERN ITHACABarcelona08950Spain
| | - Andrés Nascimento
- Neuromuscular Unit, Department of NeurologyHospital Sant Joan de DéuBarcelona08950Spain
- Applied Research in Neuromuscular DiseasesInstitut de Recerca Sant Joan de DéuBarcelona08950Spain
- Center for Biomedical Research Network on Rare Diseases (CIBERER)ISCIIIBarcelonaSpain
| | - Janet Hoenicka
- Laboratory of Neurogenetics and Molecular Medicine – IPERInstitut de Recerca Sant Joan de Déu08950BarcelonaSpain
- Center for Biomedical Research Network on Rare Diseases (CIBERER)ISCIIIBarcelonaSpain
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10
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Dominick M, Houchins N, Venugopal V, Zuberi AR, Lutz CM, Meechooveet B, Van Keuren-Jensen K, Bowser R, Medina DX. MATR3 P154S knock-in mice do not exhibit motor, muscle or neuropathologic features of ALS. Biochem Biophys Res Commun 2023; 645:164-172. [PMID: 36689813 PMCID: PMC10046992 DOI: 10.1016/j.bbrc.2023.01.032] [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: 01/05/2023] [Accepted: 01/11/2023] [Indexed: 01/15/2023]
Abstract
Matrin 3 is a nuclear matrix protein that has many roles in RNA processing including splicing and transport of mRNA. Many missense mutations in the Matrin 3 gene (MATR3) have been linked to familial forms of amyotrophic lateral sclerosis (ALS) and distal myopathy. However, the exact role of MATR3 mutations in ALS and myopathy pathogenesis is not understood. To demonstrate a role of MATR3 mutations in vivo, we generated a novel CRISPR/Cas9 mediated knock-in mouse model harboring the MATR3 P154S mutation expressed under the control of the endogenous promoter. The P154S variant of the MATR3 gene has been linked to familial forms of ALS. Heterozygous and homozygous MATR3 P154S knock-in mice did not develop progressive motor deficits compared to wild-type mice. In addition, ALS-like pathology did not develop in nervous or muscle tissue in either heterozygous or homozygous mice. Our results suggest that the MATR3 P154S variant is not sufficient to produce ALS-like pathology in vivo.
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Affiliation(s)
- Marissa Dominick
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ, 85013, USA
| | - Nicole Houchins
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ, 85013, USA
| | - Vinisha Venugopal
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ, 85013, USA
| | - Aamir R Zuberi
- Rare and Orphan Disease Translational Center, The Jackson Laboratory, Bar Harbor, ME, USA
| | - Cathleen M Lutz
- Rare and Orphan Disease Translational Center, The Jackson Laboratory, Bar Harbor, ME, USA
| | - Bessie Meechooveet
- Neurogenomics Division, Translational Genomics Research Institute, Phoenix, AZ, USA
| | | | - Robert Bowser
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ, 85013, USA
| | - David X Medina
- Department of Translational Neuroscience, Barrow Neurological Institute, Phoenix, AZ, 85013, USA.
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11
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Savarese M, Jokela M, Udd B. Distal myopathy. HANDBOOK OF CLINICAL NEUROLOGY 2023; 195:497-519. [PMID: 37562883 DOI: 10.1016/b978-0-323-98818-6.00002-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/12/2023]
Abstract
Distal myopathies are a group of genetic, primary muscle diseases. Patients develop progressive weakness and atrophy of the muscles of forearm, hands, lower leg, or feet. Currently, over 20 different forms, presenting a variable age of onset, clinical presentation, disease progression, muscle involvement, and histological findings, are known. Some of them are dominant and some recessive. Different variants in the same gene are often associated with either dominant or recessive forms, although there is a lack of a comprehensive understanding of the genotype-phenotype correlations. This chapter provides a description of the clinicopathologic and genetic aspects of distal myopathies emphasizing known etiologic and pathophysiologic mechanisms.
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Affiliation(s)
- Marco Savarese
- Folkhälsan Research Center, Helsinki, Finland; Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Manu Jokela
- Neuromuscular Research Center, Department of Neurology, Tampere University and University Hospital, Tampere, Finland; Division of Clinical Neurosciences, Department of Neurology, Turku University Hospital, Turku, Finland
| | - Bjarne Udd
- Folkhälsan Research Center, Helsinki, Finland; Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland; Neuromuscular Research Center, Department of Neurology, Tampere University and University Hospital, Tampere, Finland; Department of Neurology, Vaasa Central Hospital, Vaasa, Finland.
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12
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Manini A, Velardo D, Ciscato P, Cinnante C, Moggio M, Comi G, Corti S, Ronchi D. Expanding the Phenotypic Spectrum of Vocal Cord and Pharyngeal Weakness With Distal Myopathy due to the p.S85C MATR3 Mutation. Neurol Genet 2022; 8:e200006. [PMID: 35812165 PMCID: PMC9258980 DOI: 10.1212/nxg.0000000000200006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2021] [Accepted: 05/04/2022] [Indexed: 11/16/2022]
Abstract
Objectives The c.254C>G (p.S85C) MATR3 variant causes vocal cord and pharyngeal weakness with distal myopathy (VCPDM), which is characterized by progressive, asymmetric, predominantly distal muscle weakness, dysphonia, dysphagia, and respiratory impairment. Herein, we describe an Italian patient who harbored the p.S85C MATR3 variant and showed a composite phenotype of VCPDM and sensorimotor polyneuropathy. Methods The proband underwent neurologic evaluation, muscular MRI of the lower limbs, neurophysiologic assessment, muscle biopsy, and spirometry. After excluding common acquired and genetic causes of sensorimotor polyneuropathy, a larger group of genes involved in inherited forms of neuropathy, distal myopathy, and motor neuron disorders were analyzed by next-generation sequencing targeted panels. Results The patient, affected by progressive distal muscle weakness and hypotrophy, myalgias, dysphonia, dysphagia, respiratory impairment, and sensory abnormalities, harbored the heterozygous c.254C>G (p.S85C) MATR3 substitution. Neurophysiologic assessment revealed a severe sensorimotor polyneuropathy. Variation of fiber size, central nuclei, and nonrimmed vacuoles were evident at muscle biopsy. Discussion This finding extends the MATR3-associated VCPDM phenotypic spectrum and suggests considering MATR3 analysis in suspected congenital polyneuropathies with odd features, including dysphonia, dysphagia, and respiratory insufficiency.
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13
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Zhang JQ, Pan JQ, Wei ZY, Ren CY, Ru FX, Xia SY, He YS, Lin K, Chen JH. Brain Epitranscriptomic Analysis Revealed Altered A-to-I RNA Editing in Septic Patients. Front Genet 2022; 13:887001. [PMID: 35559016 PMCID: PMC9086164 DOI: 10.3389/fgene.2022.887001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2022] [Accepted: 03/16/2022] [Indexed: 12/04/2022] Open
Abstract
Recent studies suggest that RNA editing is associated with impaired brain function and neurological and psychiatric disorders. However, the role of A-to-I RNA editing during sepsis-associated encephalopathy (SAE) remains unclear. In this study, we analyzed adenosine-to-inosine (A-to-I) RNA editing in postmortem brain tissues from septic patients and controls. A total of 3024 high-confidence A-to-I RNA editing sites were identified. In sepsis, there were fewer A-to-I RNA editing genes and editing sites than in controls. Among all A-to-I RNA editing sites, 42 genes showed significantly differential RNA editing, with 23 downregulated and 19 upregulated in sepsis compared to controls. Notably, more than 50% of these genes were highly expressed in the brain and potentially related to neurological diseases. Notably, cis-regulatory analysis showed that the level of RNA editing in six differentially edited genes was significantly correlated with the gene expression, including HAUS augmin-like complex subunit 2 (HAUS2), protein phosphatase 3 catalytic subunit beta (PPP3CB), hook microtubule tethering protein 3 (HOOK3), CUB and Sushi multiple domains 1 (CSMD1), methyltransferase-like 7A (METTL7A), and kinesin light chain 2 (KLC2). Furthermore, enrichment analysis showed that fewer gene functions and KEGG pathways were enriched by edited genes in sepsis compared to controls. These results revealed alteration of A-to-I RNA editing in the human brain associated with sepsis, thus providing an important basis for understanding its role in neuropathology in SAE.
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Affiliation(s)
- Jing-Qian Zhang
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China.,Joint Primate Research Center for Chronic Diseases, Wuxi School of Medicine, Jiangnan University and Institute of Zoology, Guangdong Academy of Sciences, Jiangnan University, Wuxi, China.,Jiangnan University Brain Institute, Wuxi, China
| | - Jia-Qi Pan
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China.,Joint Primate Research Center for Chronic Diseases, Wuxi School of Medicine, Jiangnan University and Institute of Zoology, Guangdong Academy of Sciences, Jiangnan University, Wuxi, China.,Jiangnan University Brain Institute, Wuxi, China
| | - Zhi-Yuan Wei
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China.,Joint Primate Research Center for Chronic Diseases, Wuxi School of Medicine, Jiangnan University and Institute of Zoology, Guangdong Academy of Sciences, Jiangnan University, Wuxi, China.,Jiangnan University Brain Institute, Wuxi, China
| | - Chun-Yan Ren
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China.,Joint Primate Research Center for Chronic Diseases, Wuxi School of Medicine, Jiangnan University and Institute of Zoology, Guangdong Academy of Sciences, Jiangnan University, Wuxi, China.,Jiangnan University Brain Institute, Wuxi, China
| | - Fu-Xia Ru
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China.,Joint Primate Research Center for Chronic Diseases, Wuxi School of Medicine, Jiangnan University and Institute of Zoology, Guangdong Academy of Sciences, Jiangnan University, Wuxi, China.,Jiangnan University Brain Institute, Wuxi, China.,Jieyang People's Hospital, Jieyang, China
| | - Shou-Yue Xia
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China.,Joint Primate Research Center for Chronic Diseases, Wuxi School of Medicine, Jiangnan University and Institute of Zoology, Guangdong Academy of Sciences, Jiangnan University, Wuxi, China.,Jiangnan University Brain Institute, Wuxi, China
| | - Yu-Shan He
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China.,Joint Primate Research Center for Chronic Diseases, Wuxi School of Medicine, Jiangnan University and Institute of Zoology, Guangdong Academy of Sciences, Jiangnan University, Wuxi, China.,Jiangnan University Brain Institute, Wuxi, China
| | | | - Jian-Huan Chen
- Laboratory of Genomic and Precision Medicine, Wuxi School of Medicine, Jiangnan University, Wuxi, China.,Joint Primate Research Center for Chronic Diseases, Wuxi School of Medicine, Jiangnan University and Institute of Zoology, Guangdong Academy of Sciences, Jiangnan University, Wuxi, China.,Jiangnan University Brain Institute, Wuxi, China
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14
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Sprunger ML, Lee K, Sohn BS, Jackrel ME. Molecular determinants and modifiers of Matrin-3 toxicity, condensate dynamics, and droplet morphology. iScience 2022; 25:103900. [PMID: 35252808 PMCID: PMC8889142 DOI: 10.1016/j.isci.2022.103900] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2021] [Revised: 01/04/2022] [Accepted: 02/04/2022] [Indexed: 11/17/2022] Open
Abstract
Matrin-3 (MATR3) is a DNA- and RNA-binding protein implicated in amyotrophic lateral sclerosis (ALS), frontotemporal dementia (FTD), and distal myopathy. Here, we report the development of a yeast model of MATR3 proteotoxicity and aggregation. MATR3 is toxic and forms dynamic shell-like nuclear condensates in yeast. Disease-associated mutations in MATR3 impair condensate dynamics and disrupt condensate morphology. MATR3 toxicity is largely driven by its RNA-recognitions motifs (RRMs). Further, deletion of one or both RRMs drives coalescence of these condensates. Aberrant phase separation of several different RBPs underpins ALS/FTD, and we have engineered Hsp104 variants to reverse this misfolding. Here, we demonstrate that these same variants also counter MATR3 toxicity. We suggest that these Hsp104 variants which rescue MATR3, TDP-43, and FUS toxicity might be employed against a range of ALS/FTD-associated proteins. We anticipate that our yeast model could be a useful platform to screen for modulators of MATR3 misfolding.
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Affiliation(s)
- Macy L. Sprunger
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Ken Lee
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
| | - Brian S. Sohn
- Department of Chemistry, Washington University, St. Louis, MO 63130, USA
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15
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Todd TW, Petrucelli L. Modelling amyotrophic lateral sclerosis in rodents. Nat Rev Neurosci 2022; 23:231-251. [PMID: 35260846 DOI: 10.1038/s41583-022-00564-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/27/2022] [Indexed: 12/11/2022]
Abstract
The efficient study of human disease requires the proper tools, one of the most crucial of which is an accurate animal model that faithfully recapitulates the human condition. The study of amyotrophic lateral sclerosis (ALS) is no exception. Although the majority of ALS cases are considered sporadic, most animal models of this disease rely on genetic mutations identified in familial cases. Over the past decade, the number of genes associated with ALS has risen dramatically and, with each new genetic variant, there is a drive to develop associated animal models. Rodent models are of particular importance as they allow for the study of ALS in the context of a living mammal with a comparable CNS. Such models not only help to verify the pathogenicity of novel mutations but also provide critical insight into disease mechanisms and are crucial for the testing of new therapeutics. In this Review, we aim to summarize the full spectrum of ALS rodent models developed to date.
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Affiliation(s)
- Tiffany W Todd
- Department of Neuroscience, Mayo Clinic Jacksonville, Jacksonville, FL, USA
| | - Leonard Petrucelli
- Department of Neuroscience, Mayo Clinic Jacksonville, Jacksonville, FL, USA.
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16
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Kraya T, Mensch A, Zierz S, Stoevesandt D, Nägel S. Update Distale Myopathien. KLIN NEUROPHYSIOL 2022. [DOI: 10.1055/a-1737-8273] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
ZusammenfassungDie Distalen Myopathien umfassen eine Gruppe von genetisch determinierten
Muskelerkrankungen bei denen Paresen und eine fortschreitende Atrophie der
distalen Muskelgruppen im Vordergrund stehen. Der klinische Phänotyp,
der Erkrankungsbeginn, der Vererbungsmodus sowie histologische
Veränderungen helfen die einzelnen Formen zu differenzieren. Das
klinische und genetische Spektrum ist allerdings heterogen. In den letzten
Jahren hat durch die erweiterte genetische Diagnostik die Anzahl der
nachgewiesenen Mutationen exponentiell zugenommen. Im folgenden Beitrag werden
die Klassifikation, die klinischen Besonderheiten und die relevanten genetischen
Aspekte dargestellt.
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Affiliation(s)
- Torsten Kraya
- Universitätsklinik und Poliklinik für Neurologie,
Martin-Luther-Universität Halle-Wittenberg und
Universitätsklinikum Halle, Halle (Saale)
- Klinik für Neurologie, Klinikum St. Georg Leipzig
gGmbH
| | - Alexander Mensch
- Universitätsklinik und Poliklinik für Neurologie,
Martin-Luther-Universität Halle-Wittenberg und
Universitätsklinikum Halle, Halle (Saale)
| | - Stephan Zierz
- Universitätsklinik und Poliklinik für Neurologie,
Martin-Luther-Universität Halle-Wittenberg und
Universitätsklinikum Halle, Halle (Saale)
| | - Dietrich Stoevesandt
- Universitätsklinik und Poliklinik für Radiologie,
Martin-Luther-Universität Halle-Wittenberg und
Universitätsklinikum Halle, Halle (Saale)
| | - Steffen Nägel
- Universitätsklinik und Poliklinik für Neurologie,
Martin-Luther-Universität Halle-Wittenberg und
Universitätsklinikum Halle, Halle (Saale)
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17
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Salem A, Wilson CJ, Rutledge BS, Dilliott A, Farhan S, Choy WY, Duennwald ML. Matrin3: Disorder and ALS Pathogenesis. Front Mol Biosci 2022; 8:794646. [PMID: 35083279 PMCID: PMC8784776 DOI: 10.3389/fmolb.2021.794646] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2021] [Accepted: 11/30/2021] [Indexed: 12/11/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a neurodegenerative disorder characterized by the degeneration of both upper and lower motor neurons in the brain and spinal cord. ALS is associated with protein misfolding and inclusion formation involving RNA-binding proteins, including TAR DNA-binding protein (TDP-43) and fused in sarcoma (FUS). The 125-kDa Matrin3 is a highly conserved nuclear DNA/RNA-binding protein that is implicated in many cellular processes, including binding and stabilizing mRNA, regulating mRNA nuclear export, modulating alternative splicing, and managing chromosomal distribution. Mutations in MATR3, the gene encoding Matrin3, have been identified as causal in familial ALS (fALS). Matrin3 lacks a prion-like domain that characterizes many other ALS-associated RNA-binding proteins, including TDP-43 and FUS, however, our bioinformatics analyses and preliminary studies document that Matrin3 contains long intrinsically disordered regions that may facilitate promiscuous interactions with many proteins and may contribute to its misfolding. In addition, these disordered regions in Matrin3 undergo numerous post-translational modifications, including phosphorylation, ubiquitination and acetylation that modulate the function and misfolding of the protein. Here we discuss the disordered nature of Matrin3 and review the factors that may promote its misfolding and aggregation, two elements that might explain its role in ALS pathogenesis.
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Affiliation(s)
- Ahmed Salem
- Department of Pathology and Laboratory Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Carter J. Wilson
- Department of Applied Mathematics, Western University, London, ON, Canada
| | - Benjamin S. Rutledge
- Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Allison Dilliott
- Department of Neurology and Neurosurgery, McGill Universty, Montreal, QC, Canada
| | - Sali Farhan
- Department of Neurology and Neurosurgery, McGill Universty, Montreal, QC, Canada
- Department of Human Genetics, McGill Universty, Montreal, QC, Canada
| | - Wing-Yiu Choy
- Department of Biochemistry, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
| | - Martin L. Duennwald
- Department of Pathology and Laboratory Medicine, Schulich School of Medicine and Dentistry, Western University, London, ON, Canada
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18
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Affiliation(s)
- Caroline Ward
- Department of Pediatrics, Division of Child Neurology, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Udai Bhan Pandey
- Department of Pediatrics, Division of Child Neurology; Department of Human Genetics, School of Public Health, University of Pittsburgh; Center for Neuroscience Institute, Children's Hospital of Pittsburgh, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
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19
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Genetic architecture of motor neuron diseases. J Neurol Sci 2021; 434:120099. [PMID: 34965490 DOI: 10.1016/j.jns.2021.120099] [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: 09/16/2021] [Revised: 11/26/2021] [Accepted: 12/14/2021] [Indexed: 12/18/2022]
Abstract
Motor neuron diseases (MNDs) are rare and frequently fatal neurological disorders in which motor neurons within the brainstem and spinal cord regions slowly die. MNDs are primarily caused by genetic mutations, and > 100 different mutant genes in humans have been discovered thus far. Given the fact that many more MND-related genes have yet to be discovered, the growing body of genetic evidence has offered new insights into the diverse cellular and molecular mechanisms involved in the aetiology and pathogenesis of MNDs. This search may aid in the selection of potential candidate genes for future investigation and, eventually, may open the door to novel interventions to slow down disease progression. In this review paper, we have summarized detailed existing research findings of different MNDs, such as amyotrophic lateral sclerosis (ALS), spinal muscular atrophy (SMA), spinal bulbar muscle atrophy (SBMA) and hereditary spastic paraplegia (HSP) in relation to their complex genetic architecture.
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20
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Cavalli M, Cardani R, Renna LV, Toffetti M, Villa L, Meola G. First Family of MATR3-Related Distal Myopathy From Italy: The Role of Muscle Biopsy in the Diagnosis and Characterization of a Still Poorly Understood Disease. Front Neurol 2021; 12:715386. [PMID: 34659085 PMCID: PMC8517147 DOI: 10.3389/fneur.2021.715386] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Accepted: 09/01/2021] [Indexed: 11/13/2022] Open
Abstract
Mutations in the MATR3 gene are associated to distal myopathy with vocal cord and pharyngeal weakness (VCPDM), as well as familiar and sporadic motor neuron disease. To date, 12 VCPDM families from the United States, Germany, Japan, Bulgary, and France have been described in the literature. Here we report an Italian family with a propositus of a 40-year-old woman presenting progressive bilateral foot drop, rhinolalia, and distal muscular atrophy, without clinical signs of motor neuron affection. Her father, deceased some years before, presented a similar distal myopathy phenotype, while her 20-year-old son is asymptomatic. Myopathic changes with vacuolization were observed in muscle biopsy from the propositus. These results, together with the peculiar clinical picture, lead to MATR3 gene sequencing, which revealed a heterozygous p.S85C mutation in the propositus. The same mutation was found in her son. Over a 5-year follow-up, progression is mild in the propositus, while her son remains asymptomatic. Clinical, radiological, and pathological data of our propositus are presented and compared to previously reported cases of VCPDM. VCPDM turns out to be a quite homogenous phenotype of late-onset myopathy associated to p.S85C mutation in MATR3 gene. MATR3-related pathology, encompassing myopathy and motor neuron disease, represents an illustrative example of multisystem proteinopathy (MSP), such as other diseases associated to mutations in VCP, HNRNPA2B1, HNRNPA1, and SQSTM1 genes. The present report contributes to a further characterization of this still poorly understood pathology and points out the diagnostic utility of muscle biopsy in challenging cases.
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Affiliation(s)
- Michele Cavalli
- Université Côte d'Azur, Peripheral Nervous System and Muscle Department, Pasteur 2 Hospital, Centre Hospitalier Universitaire de Nice, Nice, France
| | - Rosanna Cardani
- BioCor Biobank, Department of Clinical Pathology, Istituto di Ricovero e Cura a Carattere Scientifico - IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Laura Valentina Renna
- BioCor Biobank, Department of Clinical Pathology, Istituto di Ricovero e Cura a Carattere Scientifico - IRCCS Policlinico San Donato, San Donato Milanese, Italy
| | - Mauro Toffetti
- Department of Neurology and Stroke Unit, ASST Franciacorta, Chiari, Italy
| | - Luisa Villa
- Université Côte d'Azur, Peripheral Nervous System and Muscle Department, Pasteur 2 Hospital, Centre Hospitalier Universitaire de Nice, Nice, France
| | - Giovanni Meola
- Department of Biomedical Sciences for Health, Department of Neurorehabilitation Sciences, Casa di Cura del Policlinico, University of Milan, Milan, Italy
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21
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van Bruggen R, Maksimovic K, You J, Tran DD, Lee HJ, Khan M, Kao CS, Kim JR, Cho W, Chen XXL, Park J. MATR3 F115C knock-in mice do not exhibit motor defects or neuropathological features of ALS. Biochem Biophys Res Commun 2021; 568:48-54. [PMID: 34182213 DOI: 10.1016/j.bbrc.2021.06.052] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2021] [Accepted: 06/15/2021] [Indexed: 12/28/2022]
Abstract
The F115C mutation in the MATR3 gene has been linked to amyotrophic lateral sclerosis (ALS). To determine the pathogenicity of the F115C mutation and the mechanism by which this mutation causes ALS, we generated mice that harbor the F115C mutation in the endogenous murine Matr3 locus. Heterozygous or homozygous MATR3 F115C knock-in mice were viable and did not exhibit motor deficits up to 2 years of age. The mutant mice showed no significant differences in the number of Purkinje cells or motor neurons compared to wild-type littermates. Neuropathological examination revealed an absence of MATR3 and TDP-43 pathology in Purkinje cells and motor neurons in the mutant mice. Together, our results suggest that the F115C mutation in MATR3 may not confer pathogenicity.
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Affiliation(s)
- Rebekah van Bruggen
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Katarina Maksimovic
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Justin You
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - David Duc Tran
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Hyeok Jun Lee
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Mashiat Khan
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Ching Serena Kao
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Jihye Rachel Kim
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Wooin Cho
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Xiao Xiao Lily Chen
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Jeehye Park
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada; Department of Molecular Genetics, University of Toronto, Toronto, Canada.
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22
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Leoni TB, González-Salazar C, Rezende TJR, Hernández ALC, Mattos AHB, Coimbra Neto AR, da Graça FF, Gonçalves JPN, Martinez ARM, Taniguti L, Kitajima JP, Kok F, Rogério F, da Silva AMS, de Oliveira ALR, Zanoteli E, Nucci A, França MC. A Novel Multisystem Proteinopathy Caused by a Missense ANXA11 Variant. Ann Neurol 2021; 90:239-252. [PMID: 34048612 DOI: 10.1002/ana.26136] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2020] [Revised: 05/24/2021] [Accepted: 05/26/2021] [Indexed: 11/09/2022]
Abstract
OBJECTIVE Protein misfolding plays a central role not only in amyotrophic lateral sclerosis (ALS), but also in other conditions, such as frontotemporal dementia (FTD), inclusion body myopathy (hIBM) or Paget's disease of bone. The concept of multisystem proteinopathies (MSP) was created to account for those rare families that segregate at least 2 out of these 4 conditions in the same pedigree. The calcium-dependent phospholipid-binding protein annexin A11 was recently associated to ALS in European pedigrees. Herein, we describe in detail 3 Brazilian families presenting hIBM (isolated or in combination with ALS/FTD) caused by the novel p.D40Y change in the gene encoding annexin A11 (ANXA11). METHODS We collected clinical, genetic, pathological and skeletal muscle imaging from 11 affected subjects. Neuroimaging was also obtained from 8 patients and 8 matched controls. RESULTS Clinico-radiological phenotype of this novel hIBM reveals a slowly progressive predominant limb-girdle syndrome, but with frequent axial (ptosis/dropped head) and distal (medial gastrocnemius) involvement as well. Muscle pathology identified numerous rimmed vacuoles with positive annexin A11, TDP-43 and p62 inclusions, but no inflammation. Central nervous system was also involved: two patients had FTD, but diffusion tensor imaging uncovered multiple areas of cerebral white matter damage in the whole group (including the corticospinal tracts and frontal subcortical regions). INTERPRETATION These findings expand the phenotypic spectrum related to ANXA11. This gene should be considered the cause of a novel multisystem proteinopathy (MSP type 6), rather than just ALS. ANN NEUROL 2021;90:239-252.
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Affiliation(s)
- Tauana Bernardes Leoni
- Department of Neurology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Carelis González-Salazar
- Department of Neurology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | | | - Ana Luisa C Hernández
- Department of Neurology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | | | | | - Felipe Franco da Graça
- Department of Neurology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | | | - Alberto R M Martinez
- Department of Neurology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | | | | | - Fernando Kok
- Mendelics Genomic Analyses, São Paulo, Brazil.,Department of Neurology, School of Medicine, University of São Paulo (USP), São Paulo, Brazil
| | - Fábio Rogério
- Department of Pathology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | | | | | - Edmar Zanoteli
- Department of Neurology, School of Medicine, University of São Paulo (USP), São Paulo, Brazil
| | - Anamarli Nucci
- Department of Neurology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
| | - Marcondes C França
- Department of Neurology, School of Medical Sciences, University of Campinas (UNICAMP), Campinas, Brazil
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23
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Sicking M, Lang S, Bochen F, Roos A, Drenth JPH, Zakaria M, Zimmermann R, Linxweiler M. Complexity and Specificity of Sec61-Channelopathies: Human Diseases Affecting Gating of the Sec61 Complex. Cells 2021; 10:1036. [PMID: 33925740 PMCID: PMC8147068 DOI: 10.3390/cells10051036] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2021] [Revised: 04/15/2021] [Accepted: 04/17/2021] [Indexed: 12/14/2022] Open
Abstract
The rough endoplasmic reticulum (ER) of nucleated human cells has crucial functions in protein biogenesis, calcium (Ca2+) homeostasis, and signal transduction. Among the roughly one hundred components, which are involved in protein import and protein folding or assembly, two components stand out: The Sec61 complex and BiP. The Sec61 complex in the ER membrane represents the major entry point for precursor polypeptides into the membrane or lumen of the ER and provides a conduit for Ca2+ ions from the ER lumen to the cytosol. The second component, the Hsp70-type molecular chaperone immunoglobulin heavy chain binding protein, short BiP, plays central roles in protein folding and assembly (hence its name), protein import, cellular Ca2+ homeostasis, and various intracellular signal transduction pathways. For the purpose of this review, we focus on these two components, their relevant allosteric effectors and on the question of how their respective functional cycles are linked in order to reconcile the apparently contradictory features of the ER membrane, selective permeability for precursor polypeptides, and impermeability for Ca2+. The key issues are that the Sec61 complex exists in two conformations: An open and a closed state that are in a dynamic equilibrium with each other, and that BiP contributes to its gating in both directions in cooperation with different co-chaperones. While the open Sec61 complex forms an aqueous polypeptide-conducting- and transiently Ca2+-permeable channel, the closed complex is impermeable even to Ca2+. Therefore, we discuss the human hereditary and tumor diseases that are linked to Sec61 channel gating, termed Sec61-channelopathies, as disturbances of selective polypeptide-impermeability and/or aberrant Ca2+-permeability.
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Affiliation(s)
- Mark Sicking
- Department of Medical Biochemistry & Molecular Biology, Saarland University, D-66421 Homburg, Germany;
| | - Sven Lang
- Department of Medical Biochemistry & Molecular Biology, Saarland University, D-66421 Homburg, Germany;
| | - Florian Bochen
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (F.B.); (M.L.)
| | - Andreas Roos
- Department of Neuropediatrics, Essen University Hospital, D-45147 Essen, Germany;
| | - Joost P. H. Drenth
- Department of Molecular Gastroenterology and Hepatology, Radboud University Medical Center, 6525 GA Nijmegen, The Netherlands;
| | - Muhammad Zakaria
- Department of Genetics, Hazara University, Mansehra 21300, Pakistan;
| | - Richard Zimmermann
- Department of Medical Biochemistry & Molecular Biology, Saarland University, D-66421 Homburg, Germany;
| | - Maximilian Linxweiler
- Department of Otorhinolaryngology, Head and Neck Surgery, Saarland University Medical Center, D-66421 Homburg, Germany; (F.B.); (M.L.)
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24
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Baek M, Choe YJ, Bannwarth S, Kim J, Maitra S, Dorn GW, Taylor JP, Paquis-Flucklinger V, Kim NC. TDP-43 and PINK1 mediate CHCHD10 S59L mutation-induced defects in Drosophila and in vitro. Nat Commun 2021; 12:1924. [PMID: 33772006 PMCID: PMC7997989 DOI: 10.1038/s41467-021-22145-9] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Accepted: 03/03/2021] [Indexed: 02/01/2023] Open
Abstract
Mutations in coiled-coil-helix-coiled-coil-helix domain containing 10 (CHCHD10) can cause amyotrophic lateral sclerosis and frontotemporal dementia (ALS-FTD). However, the underlying mechanisms are unclear. Here, we generate CHCH10S59L-mutant Drosophila melanogaster and HeLa cell lines to model CHCHD10-associated ALS-FTD. The CHCHD10S59L mutation results in cell toxicity in several tissues and mitochondrial defects. CHCHD10S59L independently affects the TDP-43 and PINK1 pathways. CHCHD10S59L expression increases TDP-43 insolubility and mitochondrial translocation. Blocking TDP-43 mitochondrial translocation with a peptide inhibitor reduced CHCHD10S59L-mediated toxicity. While genetic and pharmacological modulation of PINK1 expression and activity of its substrates rescues and mitigates the CHCHD10S59L-induced phenotypes and mitochondrial defects, respectively, in both Drosophila and HeLa cells. Our findings suggest that CHCHD10S59L-induced TDP-43 mitochondrial translocation and chronic activation of PINK1-mediated pathways result in dominant toxicity, providing a mechanistic insight into the CHCHD10 mutations associated with ALS-FTD.
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Affiliation(s)
- Minwoo Baek
- grid.17635.360000000419368657Department of Pharmacy Practice and Pharmaceutical Sciences, College of Pharmacy, University of Minnesota, Duluth, MN USA
| | - Yun-Jeong Choe
- grid.17635.360000000419368657Department of Pharmacy Practice and Pharmaceutical Sciences, College of Pharmacy, University of Minnesota, Duluth, MN USA
| | - Sylvie Bannwarth
- grid.410528.a0000 0001 2322 4179Inserm U1081, CNRS UMR7284, IRCAN, Université Côte d’Azur, CHU de Nice, Nice, France
| | - JiHye Kim
- grid.17635.360000000419368657Department of Pharmacy Practice and Pharmaceutical Sciences, College of Pharmacy, University of Minnesota, Duluth, MN USA
| | - Swati Maitra
- grid.17635.360000000419368657Department of Pharmacy Practice and Pharmaceutical Sciences, College of Pharmacy, University of Minnesota, Duluth, MN USA
| | - Gerald W. Dorn
- grid.4367.60000 0001 2355 7002Center for Pharmacogenomics, Washington University School of Medicine, St. Louis, MO USA
| | - J. Paul Taylor
- grid.240871.80000 0001 0224 711XHoward Hughes Medical Institute and Department of Cell and Molecular Biology, St. Jude Children’s Research Hospital, Memphis, TN USA
| | - Veronique Paquis-Flucklinger
- grid.410528.a0000 0001 2322 4179Inserm U1081, CNRS UMR7284, IRCAN, Université Côte d’Azur, CHU de Nice, Nice, France
| | - Nam Chul Kim
- grid.17635.360000000419368657Department of Pharmacy Practice and Pharmaceutical Sciences, College of Pharmacy, University of Minnesota, Duluth, MN USA
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25
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Amyotrophic Lateral Sclerosis and Frontotemporal Lobar Degenerations: Similarities in Genetic Background. Diagnostics (Basel) 2021; 11:diagnostics11030509. [PMID: 33805659 PMCID: PMC7998502 DOI: 10.3390/diagnostics11030509] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2021] [Revised: 03/06/2021] [Accepted: 03/11/2021] [Indexed: 12/27/2022] Open
Abstract
Amyotrophic lateral sclerosis (ALS) is a devastating, uniformly lethal progressive degenerative disorder of motor neurons that overlaps with frontotemporal lobar degeneration (FTLD) clinically, morphologically, and genetically. Although many distinct mutations in various genes are known to cause amyotrophic lateral sclerosis, it remains poorly understood how they selectively impact motor neuron biology and whether they converge on common pathways to cause neuronal degeneration. Many of the gene mutations are in proteins that share similar functions. They can be grouped into those associated with cell axon dynamics and those associated with cellular phagocytic machinery, namely protein aggregation and metabolism, apoptosis, and intracellular nucleic acid transport. Analysis of pathways implicated by mutant ALS genes has provided new insights into the pathogenesis of both familial forms of ALS (fALS) and sporadic forms (sALS), although, regrettably, this has not yet yielded definitive treatments. Many genes play an important role, with TARDBP, SQSTM1, VCP, FUS, TBK1, CHCHD10, and most importantly, C9orf72 being critical genetic players in these neurological disorders. In this mini-review, we will focus on the molecular mechanisms of these two diseases.
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26
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Abstract
RNA-binding proteins (RBPs) are essential factors required for the physiological function of neurons, muscle, and other tissue types. In keeping with this, a growing body of genetic, clinical, and pathological evidence indicates that RBP dysfunction and/or gene mutation leads to neurodegeneration and myopathy. Here, we summarize the current understanding of matrin 3 (MATR3), a poorly understood RBP implicated not only in ALS and frontotemporal dementia but also in distal myopathy. We begin by reviewing MATR3's functions, its regulation, and how it may be involved in both sporadic and familial neuromuscular disease. We also discuss insights gleaned from cellular and animal models of MATR3 pathogenesis, the links between MATR3 and other disease-associated RBPs, and the mechanisms underlying RBP-mediated disorders.
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Affiliation(s)
- Ahmed M. Malik
- Medical Scientist Training Program
- Neuroscience Graduate Program, and
| | - Sami J. Barmada
- Neuroscience Graduate Program, and
- Department of Neurology, University of Michigan, Ann Arbor, Michigan, USA
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27
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Castro M, Venkateswaran N, Peters ST, Deyle DR, Bower M, Koob MD, Boeve BF, Vossel K. Case Report: Early-Onset Behavioral Variant Frontotemporal Dementia in Patient With Retrotransposed Full-Length Transcript of Matrin-3 Variant 5. Front Neurol 2020; 11:600468. [PMID: 33408686 PMCID: PMC7779795 DOI: 10.3389/fneur.2020.600468] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2020] [Accepted: 11/19/2020] [Indexed: 11/13/2022] Open
Abstract
Frontotemporal dementia (FTD) rarely occurs in individuals under the age of 30, and genetic causes of early-onset FTD are largely unknown. The current report follows a 27 year-old patient with no significant past medical history presenting with two years of progressive changes in behavior, rushed speech, verbal aggression, and social withdrawal. MRI and FDG-PET imaging of the brain revealed changes maximally in the frontal and temporal lobes, which along with the clinical features, are consistent with behavioral variant FTD. Next generation sequencing of a panel of 28 genes associated with dementia and amyotrophic lateral sclerosis (ALS) initially revealed a duplication of exon 15 in Matrin-3 (MATR3). Whole genome sequencing determined that this genetic anomaly was, in fact, a sequence corresponding with full-length MATR3 variant 5 inserted into chromosome 12, indicating retrotransposition from a messenger RNA intermediate. To our knowledge, this is a novel mutation of MATR3, as the majority of mutations in MATR3 linked to FTD-ALS are point mutations. Genomic DNA analysis revealed that this mutation is also present in one unaffected first-degree relative and one unaffected second-degree relative. This suggests that the mutation is either a disease-causing mutation with incomplete penetrance, which has been observed in heritable FTD, or a benign variant. Retrotransposons are not often implicated in neurodegenerative diseases; thus, it is crucial to clarify the potential role of this MATR3 variant 5 retrotransposition in early-onset FTD.
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Affiliation(s)
- Madelyn Castro
- Department of Neurology, N. Bud Grossman Center for Memory Research and Care, University of Minnesota, Minneapolis, MN, United States
| | - Nisha Venkateswaran
- Department of Neurology, N. Bud Grossman Center for Memory Research and Care, University of Minnesota, Minneapolis, MN, United States.,Department of Neurology, Mary S. Easton Center for Alzheimer's Disease Research at UCLA, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States
| | - Samuel T Peters
- Department of Neurology, N. Bud Grossman Center for Memory Research and Care, University of Minnesota, Minneapolis, MN, United States
| | - David R Deyle
- Department of Clinical Genomics, Mayo Clinic Rochester, Rochester, MN, United States
| | - Matthew Bower
- Division of Genetics and Metabolism, University of Minnesota, Minneapolis, MN, United States.,Molecular Diagnostics Laboratory, M Health-Fairview, University of Minnesota, Minneapolis, MN, United States
| | - Michael D Koob
- Department of Laboratory Medicine and Pathology, University of Minnesota, Minneapolis, MN, United States
| | - Bradley F Boeve
- Department of Neurology, Mayo Clinic Rochester, Rochester, MN, United States
| | - Keith Vossel
- Department of Neurology, N. Bud Grossman Center for Memory Research and Care, University of Minnesota, Minneapolis, MN, United States.,Department of Neurology, Mary S. Easton Center for Alzheimer's Disease Research at UCLA, David Geffen School of Medicine at UCLA, Los Angeles, CA, United States.,Institute for Translational Neuroscience, University of Minnesota Medical School, Minneapolis, MN, United States
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28
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Argov Z, de Visser M. Dysphagia in adult myopathies. Neuromuscul Disord 2020; 31:5-20. [PMID: 33334661 DOI: 10.1016/j.nmd.2020.11.001] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2020] [Revised: 10/30/2020] [Accepted: 11/02/2020] [Indexed: 12/11/2022]
Abstract
Dysphagia (impaired swallowing) is not a rare problem in various neuromuscular disorders, both in the pediatric and the adult patient population. On many occasions such patients are first presented to other medical specialists or health professionals. Disorders of deglutition are probably underrecognized in patients with a neuromuscular disease as a result of patient's and doctor's delay. This review will focus on dysphagia in adults suffering from a myopathy. Dysphagia in myopathies usually affects the oropharyngeal phases which rely mostly on voluntary muscle activity of the mouth, pharynx and upper esophageal sphincter. Dysphagia is known to contribute to a reduction of quality of life and may also lead to increased morbidity and mortality. The review includes an overview on symptomatology and tools of assessments, and elaborates on dysphagia in specific hereditary and acquired myopathies.
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Affiliation(s)
- Zohar Argov
- Department of Neurology, Hadassah-Hebrew University Medical Center, Jerusalem, Israel
| | - Marianne de Visser
- Department of Neurology, Amsterdam University Medical Centres, University of Amsterdam, Amsterdam Neuroscience, Amsterdam, the Netherlands.
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29
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Desideri F, Cipriano A, Petrezselyova S, Buonaiuto G, Santini T, Kasparek P, Prochazka J, Janson G, Paiardini A, Calicchio A, Colantoni A, Sedlacek R, Bozzoni I, Ballarino M. Intronic Determinants Coordinate Charme lncRNA Nuclear Activity through the Interaction with MATR3 and PTBP1. Cell Rep 2020; 33:108548. [PMID: 33357424 PMCID: PMC7773549 DOI: 10.1016/j.celrep.2020.108548] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2020] [Revised: 10/27/2020] [Accepted: 12/02/2020] [Indexed: 12/19/2022] Open
Abstract
Chromatin architect of muscle expression (Charme) is a muscle-restricted long noncoding RNA (lncRNA) that plays an important role in myogenesis. Earlier evidence indicates that the nuclear Charme isoform, named pCharme, acts on the chromatin by assisting the formation of chromatin domains where myogenic transcription occurs. By combining RNA antisense purification (RAP) with mass spectrometry and loss-of-function analyses, we have now identified the proteins that assist these chromatin activities. These proteins—which include a sub-set of splicing regulators, principally PTBP1 and the multifunctional RNA/DNA binding protein MATR3—bind to sequences located within the alternatively spliced intron-1 to form nuclear aggregates. Consistent with the functional importance of pCharme interactome in vivo, a targeted deletion of the intron-1 by a CRISPR-Cas9 approach in mouse causes the release of pCharme from the chromatin and results in cardiac defects similar to what was observed upon knockout of the full-length transcript. pCharme is the chromatin-retained isoform of the muscle-specific Charme lncRNA Intronic signals coordinate the association of pCharme with MATR3 and PTBP1 The particle assembly prompts pCharme intron-1 chromatin retention Deletion of the intron-1 by CRISPR-Cas9 leads to heart defects in mouse
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Affiliation(s)
- Fabio Desideri
- Department of Biology and Biotechnology "Charles Darwin," Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Andrea Cipriano
- Department of Biology and Biotechnology "Charles Darwin," Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Silvia Petrezselyova
- Czech Centre of Phenogenomics and Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, v.v.i., Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Giulia Buonaiuto
- Department of Biology and Biotechnology "Charles Darwin," Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Tiziana Santini
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, 00161 Rome, Italy
| | - Petr Kasparek
- Czech Centre of Phenogenomics and Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, v.v.i., Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Jan Prochazka
- Czech Centre of Phenogenomics and Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, v.v.i., Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Giacomo Janson
- Department of Biochemical Sciences "A. Rossi Fanelli," Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Alessandro Paiardini
- Department of Biochemical Sciences "A. Rossi Fanelli," Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Alessandro Calicchio
- Department of Biology and Biotechnology "Charles Darwin," Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy
| | - Alessio Colantoni
- Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, 00161 Rome, Italy
| | - Radislav Sedlacek
- Czech Centre of Phenogenomics and Laboratory of Transgenic Models of Diseases, Institute of Molecular Genetics of the Czech Academy of Sciences, v.v.i., Prumyslova 595, 252 50 Vestec, Czech Republic
| | - Irene Bozzoni
- Department of Biology and Biotechnology "Charles Darwin," Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy; Center for Life Nano Science@Sapienza, Istituto Italiano di Tecnologia, Viale Regina Elena 291, 00161 Rome, Italy.
| | - Monica Ballarino
- Department of Biology and Biotechnology "Charles Darwin," Sapienza University of Rome, P.le A. Moro 5, 00185 Rome, Italy.
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Savarese M, Sarparanta J, Vihola A, Jonson PH, Johari M, Rusanen S, Hackman P, Udd B. Panorama of the distal myopathies. ACTA MYOLOGICA : MYOPATHIES AND CARDIOMYOPATHIES : OFFICIAL JOURNAL OF THE MEDITERRANEAN SOCIETY OF MYOLOGY 2020; 39:245-265. [PMID: 33458580 PMCID: PMC7783427 DOI: 10.36185/2532-1900-028] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Subscribe] [Scholar Register] [Received: 11/11/2020] [Accepted: 11/11/2020] [Indexed: 12/15/2022]
Abstract
Distal myopathies are genetic primary muscle disorders with a prominent weakness at onset in hands and/or feet. The age of onset (from early childhood to adulthood), the distribution of muscle weakness (upper versus lower limbs) and the histological findings (ranging from nonspecific myopathic changes to myofibrillar disarrays and rimmed vacuoles) are extremely variable. However, despite being characterized by a wide clinical and genetic heterogeneity, the distal myopathies are a category of muscular dystrophies: genetic diseases with progressive loss of muscle fibers. Myopathic congenital arthrogryposis is also a form of distal myopathy usually caused by focal amyoplasia. Massive parallel sequencing has further expanded the long list of genes associated with a distal myopathy, and contributed identifying as distal myopathy-causative rare variants in genes more often related with other skeletal or cardiac muscle diseases. Currently, almost 20 genes (ACTN2, CAV3, CRYAB, DNAJB6, DNM2, FLNC, HNRNPA1, HSPB8, KHLH9, LDB3, MATR3, MB, MYOT, PLIN4, TIA1, VCP, NOTCH2NLC, LRP12, GIPS1) have been associated with an autosomal dominant form of distal myopathy. Pathogenic changes in four genes (ADSSL, ANO5, DYSF, GNE) cause an autosomal recessive form; and disease-causing variants in five genes (DES, MYH7, NEB, RYR1 and TTN) result either in a dominant or in a recessive distal myopathy. Finally, a digenic mechanism, underlying a Welander-like form of distal myopathy, has been recently elucidated. Rare pathogenic mutations in SQSTM1, previously identified with a bone disease (Paget disease), unexpectedly cause a distal myopathy when combined with a common polymorphism in TIA1. The present review aims at describing the genetic basis of distal myopathy and at summarizing the clinical features of the different forms described so far.
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Affiliation(s)
- Marco Savarese
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Jaakko Sarparanta
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Anna Vihola
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
- Neuromuscular Research Center, Department of Genetics, Fimlab Laboratories, Tampere, Finland
| | - Per Harald Jonson
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Mridul Johari
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Salla Rusanen
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Peter Hackman
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
| | - Bjarne Udd
- Folkhälsan Research Center, Helsinki, Finland
- Department of Medical Genetics, Medicum, University of Helsinki, Helsinki, Finland
- Department of Neurology, Vaasa Central Hospital, Vaasa, Finland
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Korb MK, Kimonis VE, Mozaffar T. Multisystem proteinopathy: Where myopathy and motor neuron disease converge. Muscle Nerve 2020; 63:442-454. [PMID: 33145792 DOI: 10.1002/mus.27097] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2020] [Revised: 10/08/2020] [Accepted: 10/18/2020] [Indexed: 12/12/2022]
Abstract
Multisystem proteinopathy (MSP) is a pleiotropic group of inherited disorders that cause neurodegeneration, myopathy, and bone disease, and share common pathophysiology. Originally referred to as inclusion body myopathy associated with Paget disease of bone and frontotemporal dementia (IBMPFD), attributed to mutations in the gene encoding valosin-containing protein (VCP), it has more recently been discovered that there are several other genes responsible for similar clinical and pathological phenotypes with muscle, brain, nerve, and bone involvement, in various combinations. These include heterogeneous nuclear ribonucleoprotein A2B1 and A1 (hnRNPA2B1, hnRNPA1), sequestosome 1 (SQSTM1), matrin 3 (MATR3), T-cell restricted intracellular antigen 1 (TIA1), and optineurin (OPTN), all of which share disruption of RNA stress granule function and autophagic degradation. This review will discuss each of the genes implicated in MSP, exploring the molecular pathogenesis, clinical features, current standards of care, and future directions for this diverse yet mechanistically linked spectrum of disorders.
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Affiliation(s)
- Manisha K Korb
- Departments of Neurology, University of California Irvine, Orange, California, USA
| | - Virginia E Kimonis
- Departments of Pediatrics, University of California Irvine, Orange, California, USA
| | - Tahseen Mozaffar
- Departments of Neurology, University of California Irvine, Orange, California, USA.,Departments of Orthopedic Surgery, University of California Irvine, Orange, California, USA.,Departments of Pathology & Laboratory Medicine, University of California Irvine, Orange, California, USA
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32
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Selective neuronal degeneration in MATR3 S85C knock-in mouse model of early-stage ALS. Nat Commun 2020; 11:5304. [PMID: 33082323 PMCID: PMC7576598 DOI: 10.1038/s41467-020-18949-w] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Accepted: 09/17/2020] [Indexed: 12/12/2022] Open
Abstract
A missense mutation, S85C, in the MATR3 gene is a genetic cause for amyotrophic lateral sclerosis (ALS). It is unclear how the S85C mutation affects MATR3 function and contributes to disease. Here, we develop a mouse model that harbors the S85C mutation in the endogenous Matr3 locus using the CRISPR/Cas9 system. MATR3 S85C knock-in mice recapitulate behavioral and neuropathological features of early-stage ALS including motor impairment, muscle atrophy, neuromuscular junction defects, Purkinje cell degeneration and neuroinflammation in the cerebellum and spinal cord. Our neuropathology data reveals a loss of MATR3 S85C protein in the cell bodies of Purkinje cells and motor neurons, suggesting that a decrease in functional MATR3 levels or loss of MATR3 function contributes to neuronal defects. Our findings demonstrate that the MATR3 S85C mouse model mimics aspects of early-stage ALS and would be a promising tool for future basic and preclinical research.
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33
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Yang J, Lee SJ, Kwon Y, Ma L, Kim J. Tumor suppressive function of Matrin 3 in the basal-like breast cancer. Biol Res 2020; 53:42. [PMID: 32977861 PMCID: PMC7519516 DOI: 10.1186/s40659-020-00310-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2020] [Accepted: 09/17/2020] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Basal-like breast cancer (BLBC) or triple-negative breast cancer (TNBC) is an aggressive and highly metastatic subtype of human breast cancer. The present study aimed to elucidate the potential tumor-suppressive function of MATR3, an abundant nuclear protein, in BLBC/TNBC, whose cancer-relevance has not been characterized. METHODS We analyzed in vitro tumorigenecity by cell proliferation and soft agar colony formation assays, apoptotic cell death by flow cytometry and Poly (ADP-ribose) polymerase (PARP) cleavage, epithelial-mesenchymal transition (EMT) by checking specific EMT markers with real-time quantitative PCR and in vitro migration and invasion by Boyden Chamber assays. To elucidate the underlying mechanism by which MATR3 functions as a tumor suppressor, we performed Tandem affinity purification followed by mass spectrometry (TAP-MS) and pathway analysis. We also scrutinized MATR3 expression levels in the different subtypes of human breast cancer and the correlation between MATR3 expression and patient survival by bioinformatic analyses of publicly available transcriptome datasets. RESULTS MATR3 suppressed in vitro tumorigenecity, promoted apoptotic cell death and inhibited EMT, migration, and invasion in BLBC/TNBC cells. Various proteins regulating apoptosis were identified as MATR3-binding proteins, and YAP/TAZ pathway was suppressed by MATR3. MATR3 expression was inversely correlated with the aggressive and metastatic nature of breast cancer. Moreover, high expression levels of MATR3 were associated with a good prognosis of breast cancer patients. CONCLUSIONS Our data demonstrate that MATR3 functions as a putative tumor suppressor in BLBC/TNBC cells. Also, MATR3 potentially plays a role as a biomarker in predicting chemotherapy-sensitivity and patient survival in breast cancer patients.
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Affiliation(s)
- Jaehyuk Yang
- Department of Life Sciences, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, Republic of Korea
| | - Seung Jun Lee
- Department of Life Sciences, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, Republic of Korea
| | - Yongseok Kwon
- Department of Chemistry, Sogang University, Seoul, Republic of Korea
| | - Li Ma
- Department of Experimental Radiation Oncology, University of Texas MD Anderson Cancer Center, Houston, TX, USA
| | - Jongchan Kim
- Department of Life Sciences, Sogang University, 35 Baekbeom-ro, Mapo-gu, Seoul, Republic of Korea.
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Ramesh N, Kour S, Anderson EN, Rajasundaram D, Pandey UB. RNA-recognition motif in Matrin-3 mediates neurodegeneration through interaction with hnRNPM. Acta Neuropathol Commun 2020; 8:138. [PMID: 32811564 PMCID: PMC7437177 DOI: 10.1186/s40478-020-01021-5] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Accepted: 08/12/2020] [Indexed: 12/12/2022] Open
Abstract
Background Amyotrophic lateral sclerosis (ALS) is an adult-onset, fatal neurodegenerative disease characterized by progressive loss of upper and lower motor neurons. While pathogenic mutations in the DNA/RNA-binding protein Matrin-3 (MATR3) are linked to ALS and distal myopathy, the molecular mechanisms underlying MATR3-mediated neuromuscular degeneration remain unclear. Methods We generated Drosophila lines with transgenic insertion of human MATR3 wildtype, disease-associated variants F115C and S85C, and deletion variants in functional domains, ΔRRM1, ΔRRM2, ΔZNF1 and ΔZNF2. We utilized genetic, behavioral and biochemical tools for comprehensive characterization of our models in vivo and in vitro. Additionally, we employed in silico approaches to find transcriptomic targets of MATR3 and hnRNPM from publicly available eCLIP datasets. Results We found that targeted expression of MATR3 in Drosophila muscles or motor neurons shorten lifespan and produces progressive motor defects, muscle degeneration and atrophy. Strikingly, deletion of its RNA-recognition motif (RRM2) mitigates MATR3 toxicity. We identified rump, the Drosophila homolog of human RNA-binding protein hnRNPM, as a modifier of mutant MATR3 toxicity in vivo. Interestingly, hnRNPM physically and functionally interacts with MATR3 in an RNA-dependent manner in mammalian cells. Furthermore, common RNA targets of MATR3 and hnRNPM converge in biological processes important for neuronal health and survival. Conclusions We propose a model of MATR3-mediated neuromuscular degeneration governed by its RNA-binding domains and modulated by interaction with splicing factor hnRNPM. Electronic supplementary material The online version of this article (10.1186/s40478-020-01021-5) contains supplementary material, which is available to authorized users.
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35
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Zhao M, Kao CS, Arndt C, Tran DD, Cho WI, Maksimovic K, Chen XXL, Khan M, Zhu H, Qiao J, Peng K, Hong J, Xu J, Kim D, Kim JR, Lee J, van Bruggen R, Yoon WH, Park J. Knockdown of genes involved in axonal transport enhances the toxicity of human neuromuscular disease-linked MATR3 mutations in Drosophila. FEBS Lett 2020; 594:2800-2818. [PMID: 32515490 DOI: 10.1002/1873-3468.13858] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2020] [Accepted: 05/28/2020] [Indexed: 12/12/2022]
Abstract
Mutations in the nuclear matrix protein Matrin 3 (MATR3) have been identified in amyotrophic lateral sclerosis and myopathy. To investigate the mechanisms underlying MATR3 mutations in neuromuscular diseases and efficiently screen for modifiers of MATR3 toxicity, we generated transgenic MATR3 flies. Our findings indicate that expression of wild-type or mutant MATR3 in motor neurons reduces climbing ability and lifespan of flies, while their expression in indirect flight muscles (IFM) results in abnormal wing positioning and muscle degeneration. In both motor neurons and IFM, mutant MATR3 expression results in more severe phenotypes than wild-type MATR3, demonstrating that the disease-linked mutations confer pathogenicity. We conducted a targeted candidate screen for modifiers of the MATR3 abnormal wing phenotype and identified multiple enhancers involved in axonal transport. Knockdown of these genes enhanced protein levels and insolubility of mutant MATR3. These results suggest that accumulation of mutant MATR3 contributes to toxicity and implicate axonal transport dysfunction in disease pathogenesis.
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Affiliation(s)
- Melody Zhao
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Ching Serena Kao
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Claudia Arndt
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - David Duc Tran
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Woo In Cho
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Katarina Maksimovic
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Xiao Xiao Lily Chen
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Mashiat Khan
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Hongxian Zhu
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Julia Qiao
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Kailong Peng
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Jingyao Hong
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Jialu Xu
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Deanna Kim
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Jihye Rachel Kim
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
| | - Jooyun Lee
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Rebekah van Bruggen
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada
| | - Wan Hee Yoon
- Aging & Metabolism Research Program, Oklahoma Medical Research Foundation, Oklahoma City, OK, USA
| | - Jeehye Park
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto, Canada.,Department of Molecular Genetics, University of Toronto, Toronto, Canada
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36
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Mair D, Biskup S, Kress W, Abicht A, Brück W, Zechel S, Knop KC, Koenig FB, Tey S, Nikolin S, Eggermann K, Kurth I, Ferbert A, Weis J. Differential diagnosis of vacuolar myopathies in the NGS era. Brain Pathol 2020; 30:877-896. [PMID: 32419263 PMCID: PMC8017999 DOI: 10.1111/bpa.12864] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2020] [Revised: 04/10/2020] [Accepted: 05/07/2020] [Indexed: 12/12/2022] Open
Abstract
Altered autophagy accompanied by abnormal autophagic (rimmed) vacuoles detectable by light and electron microscopy is a common denominator of many familial and sporadic non-inflammatory muscle diseases. Even in the era of next generation sequencing (NGS), late-onset vacuolar myopathies remain a diagnostic challenge. We identified 32 adult vacuolar myopathy patients from 30 unrelated families, studied their clinical, histopathological and ultrastructural characteristics and performed genetic testing in index patients and relatives using Sanger sequencing and NGS including whole exome sequencing (WES). We established a molecular genetic diagnosis in 17 patients. Pathogenic mutations were found in genes typically linked to vacuolar myopathy (GNE, LDB3/ZASP, MYOT, DES and GAA), but also in genes not regularly associated with severely altered autophagy (FKRP, DYSF, CAV3, COL6A2, GYG1 and TRIM32) and in the digenic facioscapulohumeral muscular dystrophy 2. Characteristic histopathological features including distinct patterns of myofibrillar disarray and evidence of exocytosis proved to be helpful to distinguish causes of vacuolar myopathies. Biopsy validated the pathogenicity of the novel mutations p.(Phe55*) and p.(Arg216*) in GYG1 and of the p.(Leu156Pro) TRIM32 mutation combined with compound heterozygous deletion of exon 2 of TRIM32 and expanded the phenotype of Ala93Thr-caveolinopathy and of limb-girdle muscular dystrophy 2i caused by FKRP mutation. In 15 patients no causal variants were detected by Sanger sequencing and NGS panel analysis. In 12 of these cases, WES was performed, but did not yield any definite mutation or likely candidate gene. In one of these patients with a family history of muscle weakness, the vacuolar myopathy was eventually linked to chloroquine therapy. Our study illustrates the wide phenotypic and genotypic heterogeneity of vacuolar myopathies and validates the role of histopathology in assessing the pathogenicity of novel mutations detected by NGS. In a sizable portion of vacuolar myopathy cases, it remains to be shown whether the cause is hereditary or degenerative.
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Affiliation(s)
- Dorothea Mair
- Institute of Neuropathology, RWTH Aachen University, Aachen, Germany.,Department of Neurology, Kassel School of Medicine, Klinikum Kassel, Kassel, Germany.,University of Southampton, Southampton, UK
| | - Saskia Biskup
- Centre for Genomics and Transcriptomics CeGaT, Tübingen, Germany
| | - Wolfram Kress
- Institute of Human Genetics, University Würzburg, Würzburg, Germany
| | | | - Wolfgang Brück
- Institute of Neuropathology, Göttingen University, Göttingen, Germany
| | - Sabrina Zechel
- Institute of Neuropathology, Göttingen University, Göttingen, Germany
| | | | | | - Shelisa Tey
- Institute of Neuropathology, RWTH Aachen University, Aachen, Germany
| | - Stefan Nikolin
- Institute of Neuropathology, RWTH Aachen University, Aachen, Germany
| | - Katja Eggermann
- Institute of Human Genetics, RWTH Aachen University, Aachen, Germany
| | - Ingo Kurth
- Institute of Human Genetics, RWTH Aachen University, Aachen, Germany
| | - Andreas Ferbert
- Department of Neurology, Kassel School of Medicine, Klinikum Kassel, Kassel, Germany
| | - Joachim Weis
- Institute of Neuropathology, RWTH Aachen University, Aachen, Germany
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Habic A, Mattick JS, Calin GA, Krese R, Konc J, Kunej T. Genetic Variations of Ultraconserved Elements in the Human Genome. OMICS-A JOURNAL OF INTEGRATIVE BIOLOGY 2020; 23:549-559. [PMID: 31689173 DOI: 10.1089/omi.2019.0156] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Ultraconserved elements (UCEs) are among the most popular DNA markers for phylogenomic analysis. In at least three of five placental mammalian genomes (human, dog, cow, mouse, and rat), 2189 UCEs of at least 200 bp in length that are identical have been identified. Most of these regions have not yet been functionally annotated, and their associations with diseases remain largely unknown. This is an important knowledge gap in human genomics with regard to UCE roles in physiologically critical functions, and by extension, their relevance for shared susceptibilities to common complex diseases across several mammalian organisms in the event of their polymorphic variations. In the present study, we remapped the genomic locations of these UCEs to the latest human genome assembly, and examined them for documented polymorphisms in sequenced human genomes. We identified 29,983 polymorphisms within analyzed UCEs, but revealed that a vast majority exhibits very low minor allele frequencies. Notably, only 112 of the identified polymorphisms are associated with a phenotype in the Ensembl genome browser. Through literature analyses, we confirmed associations of 37 (i.e., out of the 112) polymorphisms within 23 UCEs with 25 diseases and phenotypic traits, including, muscular dystrophies, eye diseases, and cancers (e.g., familial adenomatous polyposis). Most reports of UCE polymorphism-disease associations appeared to be not cognizant that their candidate polymorphisms were actually within UCEs. The present study offers strategic directions and knowledge gaps for future computational and experimental work so as to better understand the thus far intriguing and puzzling role(s) of UCEs in mammalian genomes.
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Affiliation(s)
- Anamarija Habic
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Domzale, Slovenia
| | - John S Mattick
- School of Biotechnology and Biomolecular Science, University of New South Wales, Sydney, Australia.,Green Templeton College, University of Oxford, Oxford, United Kingdom
| | - George Adrian Calin
- Department of Experimental Therapeutics, The University of Texas M.D. Anderson Cancer Center, Houston, Texas.,The Center for RNA Interference and Noncoding RNAs, The University of Texas M.D. Anderson Cancer Center, Houston, Texas
| | - Rok Krese
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Domzale, Slovenia
| | - Janez Konc
- National Institute of Chemistry, Ljubljana, Slovenia
| | - Tanja Kunej
- Department of Animal Science, Biotechnical Faculty, University of Ljubljana, Domzale, Slovenia
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Mensch A, Kraya T, Koester F, Müller T, Stoevesandt D, Zierz S. Whole-body muscle MRI of patients with MATR3-associated distal myopathy reveals a distinct pattern of muscular involvement and highlights the value of whole-body examination. J Neurol 2020; 267:2408-2420. [PMID: 32361838 PMCID: PMC7358922 DOI: 10.1007/s00415-020-09862-9] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2020] [Revised: 04/18/2020] [Accepted: 04/22/2020] [Indexed: 11/28/2022]
Abstract
OBJECTIVE MATR3-associated distal myopathy is a rare distal myopathy predominantly affecting lower legs as well as wrist- and finger extensors. Whilst most distal myopathies are clinically and genetically well characterized, diagnosis often remains challenging. Pattern-based magnetic resonance imaging (MRI) approaches offer valuable additional information. However, a consistent pattern of muscular affection is missing for most distal myopathies. Thus, the aim of the present study was to establish a disease-specific pattern of muscular involvement in MATR3-associated distal myopathy using whole-body MRI. METHODS 15 patients (25-79 years of age, 7 female) with MATR3-associated distal myopathy were subjected to whole-body MRI. The grade of fatty involution for individual muscles was determined using Fischer-Grading. Results were compared to established MRI-patterns of other distal myopathies. RESULTS There was a predominant affection of the distal lower extremities. Lower legs showed a severe fatty infiltration, prominently affecting gastrocnemius and soleus muscle. In thighs, a preferential involvement of semimembranous and biceps femoris muscle was observed. Severe affection of gluteus minimus muscle as well as axial musculature, mainly affecting the thoracic segments, was seen. A sufficient discrimination to other forms of distal myopathy based solely on MRI-findings of the lower extremities was not possible. However, the inclusion of additional body parts seemed to yield specificity. INTERPRETATION Muscle MRI of patients with MATR3-associated distal myopathy revealed a distinct pattern of muscular involvement. The usage of whole-body muscle MRI provided valuable additional findings as compared to regular MRI of the lower extremities to improve distinction from other disease entities.
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Affiliation(s)
- Alexander Mensch
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany.
| | - Torsten Kraya
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany.,Department of Neurology, Klinikum St. Georg, Leipzig, Germany
| | - Felicitas Koester
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany.,Department of Radiology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
| | - Tobias Müller
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
| | - Dietrich Stoevesandt
- Department of Radiology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
| | - Stephan Zierz
- Department of Neurology, Martin-Luther-University of Halle-Wittenberg, Halle (Saale), Germany
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39
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Tasca G, Lattante S, Marangi G, Conte A, Bernardo D, Bisogni G, Mandich P, Zollino M, Ragozzino E, Udd B, Sabatelli M. SOD1 p.D12Y variant is associated with amyotrophic lateral sclerosis/distal myopathy spectrum. Eur J Neurol 2020; 27:1304-1309. [PMID: 32250500 DOI: 10.1111/ene.14246] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2020] [Revised: 03/11/2020] [Accepted: 03/26/2020] [Indexed: 12/11/2022]
Abstract
BACKGROUND AND PURPOSE The aim of our study was to describe patients with the p.D12Y variant (previously reported as D11Y) in SOD1 showing heterogeneous clinicopathological features. METHODS We performed clinical, electrophysiological, magnetic resonance imaging (MRI) and muscle pathology studies in four SOD1 p.D12Y variant-positive patients. RESULTS The SOD1 p.D12Y clinical manifestations ranged from a benign phenotype characterized by distal distribution of muscular weakness and long survival to classic forms of amyotrophic lateral sclerosis with poor prognosis. Two patients with the distal clinical phenotype showed MRI and muscle pathology alterations indicating a concurrent muscle involvement. In one of these patients significant myopathic changes were associated with rimmed vacuolar pathology. CONCLUSIONS We expand the clinical spectrum of SOD1 p.D12Y variant, including predominant lower motor neuron forms with long survival and classic forms with aggressive course. Some patients may have concomitant distal myopathy without other explanations. Given clinical, MRI and muscle pathology alterations, SOD1 should be considered in the differential diagnosis of molecularly undefined distal myopathies with rimmed vacuoles.
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Affiliation(s)
- G Tasca
- Unità Operativa Complessa di Neurologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy
| | - S Lattante
- Unità Operativa Complessa di Genetica Medica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Istituto di Medicina Genomica, Università Cattolica del Sacro Cuore, Roma, Italy
| | - G Marangi
- Unità Operativa Complessa di Genetica Medica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Istituto di Medicina Genomica, Università Cattolica del Sacro Cuore, Roma, Italy
| | - A Conte
- Centro Clinico NEMO, Roma, Italy
| | | | | | - P Mandich
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics and Maternal and Child Health (DINOGMI), University of Genoa, Genoa, Italy.,IRCCS Ospedale Policlinico San Martino, Genoa, Italy
| | - M Zollino
- Unità Operativa Complessa di Genetica Medica, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Istituto di Medicina Genomica, Università Cattolica del Sacro Cuore, Roma, Italy
| | - E Ragozzino
- Istituto di Neurologia, Università Cattolica del Sacro Cuore, Roma, Italy
| | - B Udd
- Folkhälsan Research Center, Helsinki, Finland.,Neuromuscular Research Center, Tampere University and University Hospital, Tampere, Finland
| | - M Sabatelli
- Unità Operativa Complessa di Neurologia, Fondazione Policlinico Universitario A. Gemelli IRCCS, Roma, Italy.,Centro Clinico NEMO, Roma, Italy.,Istituto di Neurologia, Università Cattolica del Sacro Cuore, Roma, Italy
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40
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Picchiarelli G, Dupuis L. Role of RNA Binding Proteins with prion-like domains in muscle and neuromuscular diseases. Cell Stress 2020; 4:76-91. [PMID: 32292882 PMCID: PMC7146060 DOI: 10.15698/cst2020.04.217] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A number of neuromuscular and muscular diseases, including amyotrophic lateral sclerosis (ALS), spinal muscular atrophy (SMA) and several myopathies, are associated to mutations in related RNA-binding proteins (RBPs), including TDP-43, FUS, MATR3 or hnRNPA1/B2. These proteins harbor similar modular primary sequence with RNA binding motifs and low complexity domains, that enables them to phase separate and create liquid microdomains. These RBPs have been shown to critically regulate multiple events of RNA lifecycle, including transcriptional events, splicing and RNA trafficking and sequestration. Here, we review the roles of these disease-related RBPs in muscle and motor neurons, and how their dysfunction in these cell types might contribute to disease.
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Affiliation(s)
- Gina Picchiarelli
- Université de Strasbourg, INSERM, Mécanismes Centraux et Périphériques de la Neurodégénérescence, UMR_S 1118, Strasbourg, France
| | - Luc Dupuis
- Université de Strasbourg, INSERM, Mécanismes Centraux et Périphériques de la Neurodégénérescence, UMR_S 1118, Strasbourg, France
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41
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Yamoah A, Tripathi P, Sechi A, Köhler C, Guo H, Chandrasekar A, Nolte KW, Wruck CJ, Katona I, Anink J, Troost D, Aronica E, Steinbusch H, Weis J, Goswami A. Aggregates of RNA Binding Proteins and ER Chaperones Linked to Exosomes in Granulovacuolar Degeneration of the Alzheimer's Disease Brain. J Alzheimers Dis 2020; 75:139-156. [PMID: 32250292 DOI: 10.3233/jad-190722] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Granulovacuolar degeneration (GVD) occurs in Alzheimer's disease (AD) brain due to compromised autophagy. Endoplasmic reticulum (ER) function and RNA binding protein (RBP) homeostasis regulate autophagy. We observed that the ER chaperones Glucose - regulated protein, 78 KDa (GRP78/BiP), Sigma receptor 1 (SigR1), and Vesicle-associated membrane protein associated protein B (VAPB) were elevated in many AD patients' subicular neurons. However, those neurons which were affected by GVD showed lower chaperone levels, and there was only minor co-localization of chaperones with GVD bodies (GVBs), suggesting that neurons lacking sufficient chaperone-mediated proteostasis enter the GVD pathway. Consistent with this notion, granular, incipient pTau aggregates in human AD and pR5 tau transgenic mouse neurons were regularly co-localized with increased chaperone immunoreactivity, whereas neurons with mature neurofibrillary tangles lacked both the chaperone buildup and significant GVD. On the other hand, APP/PS1 (APPswe/PSEN1dE9) transgenic mouse hippocampal neurons that are devoid of pTau accumulation displayed only few GVBs-like vesicles, which were still accompanied by prominent chaperone buildup. Identifying a potential trigger for GVD, we found cytoplasmic accumulations of RBPs including Matrin 3 and FUS as well as stress granules in GVBs of AD patient and pR5 mouse neurons. Interestingly, we observed that GVBs containing aggregated pTau and pTDP-43 were consistently co-localized with the exosomal marker Flotillin 1 in both AD and pR5 mice. In contrast, intraneuronal 82E1-immunoreactive amyloid-β in human AD and APP/PS1 mice only rarely co-localized with Flotillin 1-positive exosomal vesicles. We conclude that altered chaperone-mediated ER protein homeostasis and impaired autophagy manifesting in GVD are linked to both pTau and RBP accumulation and that some GVBs might be targeted to exocytosis.
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Affiliation(s)
- Alfred Yamoah
- Institute of Neuropathology, RWTH Aachen University Medical School, Aachen, Germany
- EURON - European Graduate School of Neuroscience
| | - Priyanka Tripathi
- Institute of Neuropathology, RWTH Aachen University Medical School, Aachen, Germany
- EURON - European Graduate School of Neuroscience
| | - Antonio Sechi
- Institute of Biomedical Engineering, Department of Cell Biology, RWTH Aachen University Medical School, Aachen, Germany
| | - Christoph Köhler
- Center for Anatomy, Department II, Medical Faculty, University of Cologne, Cologne, Germany
| | - Haihong Guo
- Institute of Neuropathology, RWTH Aachen University Medical School, Aachen, Germany
| | - Akila Chandrasekar
- Institute of Neuropathology, RWTH Aachen University Medical School, Aachen, Germany
| | - Kay Wilhelm Nolte
- Institute of Neuropathology, RWTH Aachen University Medical School, Aachen, Germany
| | - Christoph Jan Wruck
- Institute of Anatomy and Cell Biology, RWTH Aachen University Medical School, Aachen, Germany
| | - Istvan Katona
- Institute of Neuropathology, RWTH Aachen University Medical School, Aachen, Germany
| | - Jasper Anink
- Amsterdam UMC, University of Amsterdam, Department of (Neuro) Pathology, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Dirk Troost
- Amsterdam UMC, University of Amsterdam, Department of (Neuro) Pathology, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Eleonora Aronica
- Amsterdam UMC, University of Amsterdam, Department of (Neuro) Pathology, Amsterdam Neuroscience, Amsterdam, The Netherlands
| | - Harry Steinbusch
- Department of Psychiatry and Neuropsychology, School for Mental Health and Neuroscience, Maastricht University, Maastricht, The Netherlands
- EURON - European Graduate School of Neuroscience
| | - Joachim Weis
- Institute of Neuropathology, RWTH Aachen University Medical School, Aachen, Germany
| | - Anand Goswami
- Institute of Neuropathology, RWTH Aachen University Medical School, Aachen, Germany
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42
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St Martin JL, Wang L, Kaprielian Z. Toxicity in ALS: TDP-43 modifiers and C9orf72. Neurosci Lett 2019; 716:134621. [PMID: 31726180 DOI: 10.1016/j.neulet.2019.134621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2019] [Revised: 10/24/2019] [Accepted: 11/07/2019] [Indexed: 12/13/2022]
Abstract
Amyotrophic Lateral Sclerosis (ALS) is a devastating and fatal neurodegenerative disease affecting approximately 30,000 individuals in the United States. The average age of onset is 55 years and progression of the disease is rapid with most patients dying of respiratory failure within 3-5 years. Currently available therapeutics have modest effects on patient survival, underscoring the immediate need for more effective medicines. Recent technological advances in next generation sequencing have led to a substantial uptick in the discovery of genes linked to ALS. Since 90 % of ALS cases are sporadic, risk genes identified in familial cases provide invaluable insights into the molecular pathogenesis of the disease. Most notably, TDP-43-expressing neuronal inclusions and C9orf72 mutations have emerged as the key pathological and genetic hallmarks, respectively, of ALS. In this review, we will discuss recent advances in modifiers of TDP-43 toxicity, with an emphasis on Ataxin-2, one of the most well-characterized TDP-43 modifiers. An understanding of Ataxin-2 function and related biological pathways could provide a framework for the discovery of other novel modifiers of TDP-43. We will also describe the pathogenic mechanisms underlying C9orf72 toxicity and how these impact the disease process. Finally, we will explore emerging therapeutic strategies for dampening TDP-43 and C9orf72 toxicity and, ultimately, slowing or halting the progression of ALS.
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Affiliation(s)
| | - Lina Wang
- Amgen, Neuroscience Discovery, Cambridge, MA, United States
| | - Zaven Kaprielian
- Dementia Discovery Foundation US Discovery, Boston, United States.
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43
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Nicolau S, Liewluck T. TFG: At the crossroads of motor neuron disease and myopathy. Muscle Nerve 2019; 60:645-647. [PMID: 31478205 DOI: 10.1002/mus.26692] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2019] [Revised: 08/27/2019] [Accepted: 08/28/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Stefan Nicolau
- Department of Neurology, Mayo Clinic, Rochester, Minnesota
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44
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N-terminal sequences in matrin 3 mediate phase separation into droplet-like structures that recruit TDP43 variants lacking RNA binding elements. J Transl Med 2019; 99:1030-1040. [PMID: 31019288 PMCID: PMC6857798 DOI: 10.1038/s41374-019-0260-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2018] [Revised: 03/29/2019] [Accepted: 04/09/2019] [Indexed: 12/12/2022] Open
Abstract
RNA binding proteins associated with amyotrophic lateral sclerosis (ALS) and muscle myopathy possess sequence elements that are low in complexity, or bear resemblance to yeast prion domains. These sequence elements appear to mediate phase separation into liquid-like membraneless organelles. Using fusion proteins of matrin 3 (MATR3) to yellow fluorescent protein (YFP), we recently observed that deletion of the second RNA recognition motif (RRM2) caused the protein to phase separate and form intranuclear liquid-like droplets. Here, we use fusion constructs of MATR3, TARDBP43 (TDP43) and FUS with YFP or mCherry to examine phase separation and protein colocalization in mouse C2C12 myoblast cells. We observed that the N-terminal 397 amino acids of MATR3 (tagged with a nuclear localization signal and expressed as a fusion protein with YFP) formed droplet-like structures within nuclei. Introduction of the myopathic S85C mutation into NLS-N397 MATR3:YFP, but not ALS mutations F115C or P154S, inhibited droplet formation. Further, we analyzed interactions between variants of MATR3 lacking RRM2 (ΔRRM2) and variants of TDP43 with disabling mutations in its RRM1 domain (deletion or mutation). We observed that MATR3:YFP ΔRRM2 formed droplets that appeared to recruit the TDP43 RRM1 mutants. Further, coexpression of the NLS-397 MATR3:YFP construct with a construct that encodes the prion-like domain of TDBP43 produced intranuclear droplet-like structures containing both proteins. Collectively, our studies show that N-terminal sequences in MATR3 can mediate phase separation into intranuclear droplet-like structures that can recruit TDP43 under conditions of low RNA binding.
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45
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Zhang X, Yamashita S, Hara K, Doki T, Tawara N, Ikeda T, Misumi Y, Zhang Z, Matsuo Y, Nagai M, Kurashige T, Maruyama H, Ando Y. A mutantMATR3mouse model to explain multisystem proteinopathy. J Pathol 2019; 249:182-192. [DOI: 10.1002/path.5289] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2018] [Revised: 04/08/2019] [Accepted: 04/28/2019] [Indexed: 12/13/2022]
Affiliation(s)
- Xiao Zhang
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Satoshi Yamashita
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Kentaro Hara
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Tsukasa Doki
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Nozomu Tawara
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Tokunori Ikeda
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
- Department of Clinical InvestigationKumamoto University Hospital Kumamoto Japan
| | - Yohei Misumi
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Ziwei Zhang
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Yoshimasa Matsuo
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
| | - Makiko Nagai
- Department of NeurologyKitasato University School of Medicine Sagamihara Japan
| | - Takashi Kurashige
- Department of NeurologyNational Hospital Organization Kure Medical Centre Kure Hiroshima Japan
- Department of Clinical Neuroscience and TherapeuticsHiroshima University Graduate School of Biomedical and Health Sciences Hiroshima Japan
| | - Hirofumi Maruyama
- Department of Clinical Neuroscience and TherapeuticsHiroshima University Graduate School of Biomedical and Health Sciences Hiroshima Japan
| | - Yukio Ando
- Department of Neurology, Graduate School of Medical SciencesKumamoto University Kumamoto Japan
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46
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Fritz AJ, Sehgal N, Pliss A, Xu J, Berezney R. Chromosome territories and the global regulation of the genome. Genes Chromosomes Cancer 2019; 58:407-426. [PMID: 30664301 DOI: 10.1002/gcc.22732] [Citation(s) in RCA: 46] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/20/2018] [Revised: 01/11/2019] [Accepted: 01/12/2019] [Indexed: 12/29/2022] Open
Abstract
Spatial positioning is a fundamental principle governing nuclear processes. Chromatin is organized as a hierarchy from nucleosomes to Mbp chromatin domains (CD) or topologically associating domains (TADs) to higher level compartments culminating in chromosome territories (CT). Microscopic and sequencing techniques have substantiated chromatin organization as a critical factor regulating gene expression. For example, enhancers loop back to interact with their target genes almost exclusively within TADs, distally located coregulated genes reposition into common transcription factories upon activation, and Mbp CDs exhibit dynamic motion and configurational changes in vivo. A longstanding question in the nucleus field is whether an interactive nuclear matrix provides a direct link between structure and function. The findings of nonrandom radial positioning of CT within the nucleus suggest the possibility of preferential interaction patterns among populations of CT. Sequential labeling up to 10 CT followed by application of computer imaging and geometric graph mining algorithms revealed cell-type specific interchromosomal networks (ICN) of CT that are altered during the cell cycle, differentiation, and cancer progression. It is proposed that the ICN correlate with the global level of genome regulation. These approaches also demonstrated that the large scale 3-D topology of CT is specific for each CT. The cell-type specific proximity of certain chromosomal regions in normal cells may explain the propensity of distinct translocations in cancer subtypes. Understanding how genes are dysregulated upon disruption of the normal "wiring" of the nucleus by translocations, deletions, and amplifications that are hallmarks of cancer, should enable more targeted therapeutic strategies.
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Affiliation(s)
- Andrew J Fritz
- Department of Biochemistry and University of Vermont Cancer Center, The University of Vermont Larner College of Medicine, Burlington, Vermont
| | - Nitasha Sehgal
- Department of Biological Sciences, University at Buffalo, Buffalo, New York
| | - Artem Pliss
- Institute for Lasers, Photonics and Biophotonics and the Department of Chemistry, University at Buffalo, Buffalo, New York
| | - Jinhui Xu
- Department of Computer Science and Engineering, University at Buffalo, Buffalo, New York
| | - Ronald Berezney
- Department of Biological Sciences, University at Buffalo, Buffalo, New York
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47
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Moloney C, Rayaprolu S, Howard J, Fromholt S, Brown H, Collins M, Cabrera M, Duffy C, Siemienski Z, Miller D, Borchelt DR, Lewis J. Analysis of spinal and muscle pathology in transgenic mice overexpressing wild-type and ALS-linked mutant MATR3. Acta Neuropathol Commun 2018; 6:137. [PMID: 30563574 PMCID: PMC6299607 DOI: 10.1186/s40478-018-0631-0] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2018] [Accepted: 11/03/2018] [Indexed: 12/12/2022] Open
Abstract
Mutations in MATR3 have been associated with amyotrophic lateral sclerosis (ALS) as well as a form of distal myopathy termed vocal cord pharyngeal distal myopathy (VCPDM). To begin to understand how mutations in MATR3 may cause disease, here we provide initial characterization of transgenic (Tg) mice expressing human wild-type (WT) MATR3 (MATR3WT) and ALS-mutant F115C MATR3 (MATR3F115C) proteins under the control of the mouse prion promoter (MoPrP). For each construct, we established multiple independent lines of mice that stably transmitted the transgene. Unexpectedly, for all stably-transmitting lines examined, MATR3 transgenic mRNA expression was more robust in muscle, with minimal expression in spinal cord. The levels of transgenic mRNA in muscle did not differ between mice from our lead MATR3F115C line and lead MATR3WT line, but mice from the lead MATR3F115C line had significantly higher levels of MATR3 protein in muscle over the lead MATR3WT line. Mice from the three independent, established lines of MATR3F115C mice developed weakness in both fore- and hind-limbs as early as < 1 months of age; whereas, MATR3WT mice aged to > 20 months were not overtly distinguishable from non-transgenic (NT) littermates based on basic motor phenotype. Muscle of both MATR3WT and MATR3F115C mice showed vacuoles by 2 months of age which worsened by ~ 10 months, but vacuolation was noticeably more severe in MATR3F115C mice. Overall, our results indicate that increasing the levels of MATR3 in muscle can cause pathologic changes associated with myopathy, with MATR3F115C expression causing overt muscle atrophy and a profound motor phenotype. The findings suggest that analysis of muscle pathology in individuals harboring ALS-linked MATR3 mutations should be routinely considered.
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Affiliation(s)
- Christina Moloney
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Sruti Rayaprolu
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - John Howard
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Susan Fromholt
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Hilda Brown
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Matt Collins
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Mariela Cabrera
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Colin Duffy
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Zoe Siemienski
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - Dave Miller
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA
| | - David R Borchelt
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA.
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA.
- McKnight Brain Institute, Department of Neuroscience, University of Florida, Gainesville, Florida, USA.
| | - Jada Lewis
- Center for Translational Research in Neurodegenerative Disease, University of Florida, Gainesville, Florida, USA.
- Department of Neuroscience, University of Florida, Gainesville, Florida, USA.
- McKnight Brain Institute, Department of Neuroscience, University of Florida, Gainesville, Florida, USA.
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48
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Milone M, Liewluck T. The unfolding spectrum of inherited distal myopathies. Muscle Nerve 2018; 59:283-294. [PMID: 30171629 DOI: 10.1002/mus.26332] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2018] [Revised: 08/26/2018] [Accepted: 08/28/2018] [Indexed: 12/30/2022]
Abstract
Distal myopathies are a group of rare muscle diseases characterized by distal weakness at onset. Although acquired myopathies can occasionally present with distal weakness, the majority of distal myopathies have a genetic etiology. Their age of onset varies from early-childhood to late-adulthood while the predominant muscle weakness can affect calf, ankle dorsiflexor, or distal upper limb muscles. A spectrum of muscle pathological changes, varying from nonspecific myopathic changes to rimmed vacuoles to myofibrillar pathology to nuclei centralization, have been noted. Likewise, the underlying molecular defect is heterogeneous. In addition, there is emerging evidence that distal myopathies can result from defective proteins encoded by genes causative of neurogenic disorders, be manifestation of multisystem proteinopathies or the result of the altered interplay between different genes. In this review, we provide an overview on the clinical, electrophysiological, pathological, and molecular aspects of distal myopathies, focusing on the most recent developments in the field. Muscle Nerve 59:283-294, 2019.
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Affiliation(s)
| | - Teerin Liewluck
- Department of Neurology, Mayo Clinic, Rochester, Minnesota, USA
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49
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An H, Williams NG, Shelkovnikova TA. NEAT1 and paraspeckles in neurodegenerative diseases: A missing lnc found? Noncoding RNA Res 2018; 3:243-252. [PMID: 30533572 PMCID: PMC6257911 DOI: 10.1016/j.ncrna.2018.11.003] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2018] [Revised: 11/13/2018] [Accepted: 11/14/2018] [Indexed: 12/13/2022] Open
Abstract
Neurodegenerative diseases are among the most common causes of disability worldwide. Although neurodegenerative diseases are heterogeneous in both their clinical features and the underlying physiology, they are all characterised by progressive loss of specific neuronal populations. Recent experimental evidence suggests that long non-coding RNAs (lncRNAs) play important roles in the CNS in health and disease. Nuclear Paraspeckle Assembly Transcript 1 (NEAT1) is an abundant, ubiquitously expressed lncRNA, which forms a scaffold for a specific RNA granule in the nucleus, or nuclear body, the paraspeckle. Paraspeckles act as molecular hubs for cellular processes commonly affected by neurodegeneration. Transcriptomic analyses of the diseased human tissue have revealed altered NEAT1 levels in the CNS in major neurodegenerative disorders as well as in some disease models. Although it is clear that changes in NEAT1 expression (and in some cases, paraspeckle assembly) accompany neuronal damage, our understanding of NEAT1 contribution to the disease pathogenesis is still rudimentary. In this review, we have summarised the available knowledge on NEAT1 involvement in the molecular processes linked to neurodegeneration and on NEAT1 dysregulation in this type of disease, with a special focus on amyotrophic lateral sclerosis. The goal of this review is to attract the attention of researchers in the field of neurodegeneration to NEAT1 and paraspeckles.
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Affiliation(s)
- Haiyan An
- Medicines Discovery Institute, School of Biosciences, Cardiff University, Park Place, Cardiff, CF10 3AT, United Kingdom
| | - Non G Williams
- Medicines Discovery Institute, School of Biosciences, Cardiff University, Park Place, Cardiff, CF10 3AT, United Kingdom
| | - Tatyana A Shelkovnikova
- Medicines Discovery Institute, School of Biosciences, Cardiff University, Park Place, Cardiff, CF10 3AT, United Kingdom
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50
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Zhao M, Kim JR, van Bruggen R, Park J. RNA-Binding Proteins in Amyotrophic Lateral Sclerosis. Mol Cells 2018; 41:818-829. [PMID: 30157547 PMCID: PMC6182225 DOI: 10.14348/molcells.2018.0243] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2018] [Revised: 07/23/2018] [Accepted: 08/10/2018] [Indexed: 12/11/2022] Open
Abstract
Significant research efforts are ongoing to elucidate the complex molecular mechanisms underlying amyotrophic lateral sclerosis (ALS), which may in turn pinpoint potential therapeutic targets for treatment. The ALS research field has evolved with recent discoveries of numerous genetic mutations in ALS patients, many of which are in genes encoding RNA binding proteins (RBPs), including TDP-43, FUS, ATXN2, TAF15, EWSR1, hnRNPA1, hnRNPA2/B1, MATR3 and TIA1. Accumulating evidence from studies on these ALS-linked RBPs suggests that dysregulation of RNA metabolism, cytoplasmic mislocalization of RBPs, dysfunction in stress granule dynamics of RBPs and increased propensity of mutant RBPs to aggregate may lead to ALS pathogenesis. Here, we review current knowledge of the biological function of these RBPs and the contributions of ALS-linked mutations to disease pathogenesis.
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Affiliation(s)
- Melody Zhao
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto,
Canada
- Department of Molecular Genetics, University of Toronto, Toronto,
Canada
| | - Jihye Rachel Kim
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto,
Canada
- Department of Molecular Genetics, University of Toronto, Toronto,
Canada
| | - Rebekah van Bruggen
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto,
Canada
| | - Jeehye Park
- Genetics and Genome Biology Program, The Hospital for Sick Children, Toronto,
Canada
- Department of Molecular Genetics, University of Toronto, Toronto,
Canada
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