51
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Li C, Ou R, Chen Y, Gu X, Wei Q, Cao B, Zhang L, Hou Y, Liu K, Chen X, Song W, Zhao B, Wu Y, Shang H. Mutation Analysis of
DNAJC
Family for
Early‐Onset
Parkinson's Disease in a Chinese Cohort. Mov Disord 2020; 35:2068-2076. [PMID: 32662538 DOI: 10.1002/mds.28203] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2020] [Revised: 05/30/2020] [Accepted: 06/17/2020] [Indexed: 02/05/2023] Open
Affiliation(s)
- ChunYu Li
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - RuWei Ou
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - YongPing Chen
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - XiaoJing Gu
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - QianQian Wei
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - Bei Cao
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - LingYu Zhang
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - YanBing Hou
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - KunCheng Liu
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - XuePing Chen
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - Wei Song
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - Bi Zhao
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - Ying Wu
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
| | - HuiFang Shang
- Department of Neurology National Clinical Research Center for Geriatric, West China Hospital, Sichuan University Chengdu China
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Jedličková I, Cadieux-Dion M, Přistoupilová A, Stránecký V, Hartmannová H, Hodaňová K, Barešová V, Hůlková H, Sikora J, Nosková L, Mušálková D, Vyleťal P, Sovová J, Cossette P, Andermann E, Andermann F, Kmoch S. Autosomal-dominant adult neuronal ceroid lipofuscinosis caused by duplication in DNAJC5 initially missed by Sanger and whole-exome sequencing. Eur J Hum Genet 2020; 28:783-789. [PMID: 31919451 PMCID: PMC7253421 DOI: 10.1038/s41431-019-0567-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 11/29/2019] [Accepted: 12/10/2019] [Indexed: 11/09/2022] Open
Abstract
Adult-onset neuronal ceroid lipofuscinoses (ANCL, Kufs disease) are rare hereditary neuropsychiatric disorders characterized by intralysosomal accumulation of ceroid in tissues. The ceroid accumulation primarily affects the brain, leading to neuronal loss and progressive neurodegeneration. Although several causative genes have been identified (DNAJC5, CLN6, CTSF, GRN, CLN1, CLN5, ATP13A2), the genetic underpinnings of ANCL in some families remain unknown. Here we report one family with autosomal dominant (AD) Kufs disease caused by a 30 bp in-frame duplication in DNAJC5, encoding the cysteine-string protein alpha (CSPα). This variant leads to a duplication of the central core motif of the cysteine-string domain of CSPα and affects palmitoylation-dependent CSPα sorting in cultured neuronal cells similarly to two previously described CSPα variants, p.(Leu115Arg) and p.(Leu116del). Interestingly, the duplication was not detected initially by standard Sanger sequencing due to a preferential PCR amplification of the shorter wild-type allele and allelic dropout of the mutated DNAJC5 allele. It was also missed by subsequent whole-exome sequencing (WES). Its identification was facilitated by reanalysis of original WES data and modification of the PCR and Sanger sequencing protocols. Independently occurring variants in the genomic sequence of DNAJC5 encoding the cysteine-string domain of CSPα suggest that this region may be more prone to DNA replication errors and that insertions or duplications within this domain should be considered in unsolved ANCL cases.
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Affiliation(s)
- Ivana Jedličková
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Maxime Cadieux-Dion
- Centre Hospitalier de L´Universite de Montréal, Montréal, QC, Canada
- Center for Pediatric Genomic Medicine, Children's Mercy Hospital, Kansas City, MO, USA
| | - Anna Přistoupilová
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Viktor Stránecký
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Hana Hartmannová
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Kateřina Hodaňová
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Veronika Barešová
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Helena Hůlková
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
- Institute of Pathology, First Faculty of Medicine and General University Hospital, Charles University, Prague, Czech Republic
| | - Jakub Sikora
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
- Institute of Pathology, First Faculty of Medicine and General University Hospital, Charles University, Prague, Czech Republic
| | - Lenka Nosková
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Dita Mušálková
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Petr Vyleťal
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Jana Sovová
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Patrick Cossette
- Centre Hospitalier de L´Universite de Montréal, Montréal, QC, Canada
| | - Eva Andermann
- Montreal Neurological Hospital & Institute, McGill University, Montreal, QC, Canada
| | - Frederick Andermann
- Montreal Neurological Hospital & Institute, McGill University, Montreal, QC, Canada
| | - Stanislav Kmoch
- Research Unit for Rare Diseases, Department of Pediatrics and Adolescent Medicine, First Faculty of Medicine, Charles University, Prague, Czech Republic.
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53
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Kozina AA, Okuneva EG, Baryshnikova NV, Kondakova OB, Nikolaeva EA, Fedoniuk ID, Mikhailova SV, Krasnenko AY, Stetsenko IF, Plotnikov NA, Klimchuk OI, Popov YV, Surkova EI, Shatalov PA, Rakitko AS, Ilinsky VV. Neuronal ceroid lipofuscinosis in the Russian population: Two novel mutations and the prevalence of heterozygous carriers. Mol Genet Genomic Med 2020; 8:e1228. [PMID: 32412666 PMCID: PMC7336735 DOI: 10.1002/mgg3.1228] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 02/28/2020] [Accepted: 03/09/2020] [Indexed: 12/30/2022] Open
Abstract
Background Neuronal ceroid lipofuscinoses (NCLs) are a group of neurodegenerative disorders characterized by an accumulation of lipofuscin in the body's tissues. NCLs are associated with variable age of onset and progressive symptoms including seizures, psychomotor decline, and loss of vision. Methods We describe the clinical and molecular characteristics of four Russian patients with NCL (one female and three males, with ages ranging from 4 to 5 years). The clinical features of these patients include cognitive and motor deterioration, seizures, stereotypies, and magnetic resonance imaging signs of brain atrophy. Exome sequencing was performed to identify the genetic variants of patients with NCL. Additionally, we tested 6,396 healthy Russians for NCL alleles. Results We identified five distinct mutations in four NCL‐associated genes of which two mutations are novel. These include a novel homozygous frameshift mutation in the CLN6 gene, a compound heterozygous missense mutation in the KCTD7 gene, and previously known mutations in KCTD7, TPP1, and MFSD8 genes. Furthermore, we estimated the Russian population carrier frequency of pathogenic and likely pathogenic variants in 13 genes associated with different types of NCL. Conclusion Our study expands the spectrum of mutations in lipofuscinosis. This is the first study to describe the molecular basis of NCLs in Russia and has profound and numerous clinical implications for diagnosis, genetic counseling, genotype–phenotype correlations, and prognosis.
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Affiliation(s)
- Anastasiya A Kozina
- Institute of Biomedical Chemistry, Moscow, Russia.,Pirogov Russian National Research Medical University, Moscow, Russia
| | | | - Natalia V Baryshnikova
- Pirogov Russian National Research Medical University, Moscow, Russia.,Genotek Ltd., Moscow, Russia
| | - Olga B Kondakova
- Scientific and Practical Centre of Pediatric Psychoneurology of Moscow Healthcare Department, Moscow, Russia
| | - Ekaterina A Nikolaeva
- Veltischev Research and Clinical Institute for Pediatrics of the Pirogov Russian National Research Medical University, Moscow, Russia
| | | | | | | | | | | | | | | | | | - Peter A Shatalov
- Genotek Ltd., Moscow, Russia.,Veltischev Research and Clinical Institute for Pediatrics of the Pirogov Russian National Research Medical University, Moscow, Russia
| | - Alexander S Rakitko
- Genotek Ltd., Moscow, Russia.,Faculty of Mechanics and Mathematics, Lomonosov Moscow State University, Moscow, Russia
| | - Valery V Ilinsky
- Institute of Biomedical Chemistry, Moscow, Russia.,Pirogov Russian National Research Medical University, Moscow, Russia.,Genotek Ltd., Moscow, Russia.,Vavilov Institute of General Genetics, Moscow, Russia
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54
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Gundersen CB. Cysteine string proteins. Prog Neurobiol 2020; 188:101758. [DOI: 10.1016/j.pneurobio.2020.101758] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 01/06/2020] [Accepted: 01/13/2020] [Indexed: 12/17/2022]
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55
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Naseri NN, Ergel B, Kharel P, Na Y, Huang Q, Huang R, Dolzhanskaya N, Burré J, Velinov MT, Sharma M. Aggregation of mutant cysteine string protein-α via Fe-S cluster binding is mitigated by iron chelators. Nat Struct Mol Biol 2020; 27:192-201. [PMID: 32042150 PMCID: PMC7021000 DOI: 10.1038/s41594-020-0375-y] [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: 07/06/2019] [Accepted: 01/08/2020] [Indexed: 01/27/2023]
Abstract
Point mutations in cysteine string protein-α (CSPα) cause dominantly inherited adult-onset neuronal ceroid lipofuscinosis (ANCL), a rapidly progressing and lethal neurodegenerative disease with no treatment. ANCL mutations are proposed to trigger CSPα aggregation/oligomerization, but the mechanism of oligomer formation remains unclear. Here we use purified proteins, mouse primary neurons and patient-derived induced neurons to show that the normally palmitoylated cysteine string region of CSPα loses palmitoylation in ANCL mutants. This allows oligomerization of mutant CSPα via ectopic binding of iron-sulfur (Fe-S) clusters. The resulting oligomerization of mutant CSPα causes its mislocalization and consequent loss of its synaptic SNARE-chaperoning function. We then find that pharmacological iron chelation mitigates the oligomerization of mutant CSPα, accompanied by partial rescue of the downstream SNARE defects and the pathological hallmark of lipofuscin accumulation. Thus, the iron chelators deferiprone (L1) and deferoxamine (Dfx), which are already used to treat iron overload in humans, offer a new approach for treating ANCL.
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Affiliation(s)
- Nima N Naseri
- Appel Institute for Alzheimer's Disease Research, and Brain & Mind Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Burçe Ergel
- Appel Institute for Alzheimer's Disease Research, and Brain & Mind Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Parinati Kharel
- Appel Institute for Alzheimer's Disease Research, and Brain & Mind Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Yoonmi Na
- Appel Institute for Alzheimer's Disease Research, and Brain & Mind Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Qingqiu Huang
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, NY, USA
| | - Rong Huang
- Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, NY, USA
| | - Natalia Dolzhanskaya
- New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA
| | - Jacqueline Burré
- Appel Institute for Alzheimer's Disease Research, and Brain & Mind Research Institute, Weill Cornell Medicine, New York, NY, USA
| | - Milen T Velinov
- New York State Institute for Basic Research in Developmental Disabilities, Staten Island, NY, USA
| | - Manu Sharma
- Appel Institute for Alzheimer's Disease Research, and Brain & Mind Research Institute, Weill Cornell Medicine, New York, NY, USA.
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56
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Berryer MH, Kosmaczewski SG, Barrett LE. Fly model sheds light on brain disease. eLife 2019; 8:53233. [PMID: 31808420 PMCID: PMC6897533 DOI: 10.7554/elife.53233] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2019] [Accepted: 12/03/2019] [Indexed: 11/23/2022] Open
Abstract
Experiments on flies suggest that a gain-of-function mechanism in a protein called CSPɑ contributes to the progressive brain disease CLN4.
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Affiliation(s)
- Martin H Berryer
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, United States.,Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, United States
| | - Sara G Kosmaczewski
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, United States.,Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, United States
| | - Lindy E Barrett
- Stanley Center for Psychiatric Research, Broad Institute of MIT and Harvard, Cambridge, United States.,Department of Stem Cell and Regenerative Biology, Harvard University, Cambridge, United States
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57
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Huber RJ, Hughes SM, Liu W, Morgan A, Tuxworth RI, Russell C. The contribution of multicellular model organisms to neuronal ceroid lipofuscinosis research. Biochim Biophys Acta Mol Basis Dis 2019; 1866:165614. [PMID: 31783156 DOI: 10.1016/j.bbadis.2019.165614] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/26/2019] [Revised: 11/14/2019] [Accepted: 11/15/2019] [Indexed: 02/07/2023]
Abstract
The NCLs (neuronal ceroid lipofuscinosis) are forms of neurodegenerative disease that affect people of all ages and ethnicities but are most prevalent in children. Commonly known as Batten disease, this debilitating neurological disorder is comprised of 13 different subtypes that are categorized based on the particular gene that is mutated (CLN1-8, CLN10-14). The pathological mechanisms underlying the NCLs are not well understood due to our poor understanding of the functions of NCL proteins. Only one specific treatment (enzyme replacement therapy) is approved, which is for the treating the brain in CLN2 disease. Hence there remains a desperate need for further research into disease-modifying treatments. In this review, we present and evaluate the genes, proteins and studies performed in the social amoeba, nematode, fruit fly, zebrafish, mouse and large animals pertinent to NCL. In particular, we highlight the use of multicellular model organisms to study NCL protein function, pathology and pathomechanisms. Their use in testing novel therapeutic approaches is also presented. With this information, we highlight how future research in these systems may be able to provide new insight into NCL protein functions in human cells and aid in the development of new therapies.
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Affiliation(s)
- Robert J Huber
- Department of Biology, Trent University, Peterborough, Ontario K9L 0G2, Canada
| | - Stephanie M Hughes
- Department of Biochemistry, School of Biomedical Sciences, Brain Health Research Centre and Genetics Otago, University of Otago, Dunedin, New Zealand
| | - Wenfei Liu
- School of Pharmacy, University College London, London, WC1N 1AX, UK
| | - Alan Morgan
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown St., Liverpool L69 3BX, UK
| | - Richard I Tuxworth
- Institute of Cancer and Genomic Sciences, University of Birmingham, Birmingham B15 2TT, UK
| | - Claire Russell
- Dept. Comparative Biomedical Sciences, Royal Veterinary College, Royal College Street, London NW1 0TU, UK.
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58
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Mulcahy B, Ibbett P, Holden-Dye L, O'Connor V. The Caenorhabditis elegans cysteine-string protein homologue DNJ-14 is dispensable for neuromuscular junction maintenance across ageing. ACTA ACUST UNITED AC 2019; 222:jeb.205450. [PMID: 31624097 DOI: 10.1242/jeb.205450] [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: 04/16/2019] [Accepted: 10/09/2019] [Indexed: 01/16/2023]
Abstract
Maintenance of synaptic function across ageing is vital in sustaining cognitive function. Synaptic dysfunction is a key part of the pathophysiology of a number of neurodegenerative diseases. The synaptic co-chaperone, cysteine-string protein (CSP), is important for synaptic maintenance and function in Drosophila, mice and humans, and disruption of CSP results in synaptic degeneration. We sought to characterise synaptic ageing in Caenorhabditis elegans upon genetic disruption of CSP. To do this, we focused on the worms' neuromuscular junctions, which are the best characterised synapse. CSP mutant worms did not display reduced lifespan or any neuromuscular-dependent behavioural deficits across ageing. Pharmacological interrogation of the neuromuscular synapse of CSP mutant animals showed no sign of synaptic dysfunction even at advanced age. Lastly, patch clamp analysis of neuromuscular transmission across ageing in wild-type and CSP mutant animals revealed no obvious CSP-dependent deficits. Electrophysiological spontaneous postsynaptic current analysis reinforced pharmacological observations that the C. elegans neuromuscular synapse increases in strength during early ageing and remains relatively intact in old, immotile worms. Taken together, this study shows that surprisingly, despite disruption of CSP in other animals having severe synaptic phenotypes, CSP does not seem to be important for maintenance of the neuromuscular junction across ageing in C. elegans.
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Affiliation(s)
- Ben Mulcahy
- Centre for Biological Sciences, Faculty of Natural and Environmental Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - Paul Ibbett
- Centre for Biological Sciences, Faculty of Natural and Environmental Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - Lindy Holden-Dye
- Centre for Biological Sciences, Faculty of Natural and Environmental Sciences, University of Southampton, Southampton SO17 1BJ, UK
| | - Vincent O'Connor
- Centre for Biological Sciences, Faculty of Natural and Environmental Sciences, University of Southampton, Southampton SO17 1BJ, UK
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59
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Imler E, Pyon JS, Kindelay S, Torvund M, Zhang YQ, Chandra SS, Zinsmaier KE. A Drosophila model of neuronal ceroid lipofuscinosis CLN4 reveals a hypermorphic gain of function mechanism. eLife 2019; 8:e46607. [PMID: 31663851 PMCID: PMC6897512 DOI: 10.7554/elife.46607] [Citation(s) in RCA: 9] [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: 03/06/2019] [Accepted: 10/29/2019] [Indexed: 12/24/2022] Open
Abstract
The autosomal dominant neuronal ceroid lipofuscinoses (NCL) CLN4 is caused by mutations in the synaptic vesicle (SV) protein CSPα. We developed animal models of CLN4 by expressing CLN4 mutant human CSPα (hCSPα) in Drosophila neurons. Similar to patients, CLN4 mutations induced excessive oligomerization of hCSPα and premature lethality in a dose-dependent manner. Instead of being localized to SVs, most CLN4 mutant hCSPα accumulated abnormally, and co-localized with ubiquitinated proteins and the prelysosomal markers HRS and LAMP1. Ultrastructural examination revealed frequent abnormal membrane structures in axons and neuronal somata. The lethality, oligomerization and prelysosomal accumulation induced by CLN4 mutations was attenuated by reducing endogenous wild type (WT) dCSP levels and enhanced by increasing WT levels. Furthermore, reducing the gene dosage of Hsc70 also attenuated CLN4 phenotypes. Taken together, we suggest that CLN4 alleles resemble dominant hypermorphic gain of function mutations that drive excessive oligomerization and impair membrane trafficking.
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Affiliation(s)
- Elliot Imler
- Graduate Interdisciplinary Program in NeuroscienceUniversity of ArizonaTucsonUnited States
- Department of NeuroscienceUniversity of ArizonaTucsonUnited States
| | - Jin Sang Pyon
- Department of NeuroscienceUniversity of ArizonaTucsonUnited States
- Undergraduate Program in Neuroscience and Cognitive Science, Department of Molecular and Cellular BiologyUniversity of ArizonaTucsonUnited States
| | - Selina Kindelay
- Department of NeuroscienceUniversity of ArizonaTucsonUnited States
- Undergraduate Program in Neuroscience and Cognitive Science, Department of Molecular and Cellular BiologyUniversity of ArizonaTucsonUnited States
| | - Meaghan Torvund
- Graduate Interdisciplinary Program in NeuroscienceUniversity of ArizonaTucsonUnited States
- Department of NeuroscienceUniversity of ArizonaTucsonUnited States
| | - Yong-quan Zhang
- Department of NeuroscienceYale UniversityNew HavenUnited States
- Department of NeurologyYale UniversityNew HavenUnited States
| | - Sreeganga S Chandra
- Department of NeuroscienceYale UniversityNew HavenUnited States
- Department of NeurologyYale UniversityNew HavenUnited States
| | - Konrad E Zinsmaier
- Department of NeuroscienceUniversity of ArizonaTucsonUnited States
- Department of Molecular and Cellular BiologyUniversity of ArizonaTucsonUnited States
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60
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Koster KP, Yoshii A. Depalmitoylation by Palmitoyl-Protein Thioesterase 1 in Neuronal Health and Degeneration. Front Synaptic Neurosci 2019; 11:25. [PMID: 31555119 PMCID: PMC6727029 DOI: 10.3389/fnsyn.2019.00025] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2019] [Accepted: 08/12/2019] [Indexed: 12/17/2022] Open
Abstract
Protein palmitoylation is the post-translational, reversible addition of a 16-carbon fatty acid, palmitate, to proteins. Protein palmitoylation has recently garnered much attention, as it robustly modifies the localization and function of canonical signaling molecules and receptors. Protein depalmitoylation, on the other hand, is the process by which palmitic acid is removed from modified proteins and contributes, therefore, comparably to palmitoylated-protein dynamics. Palmitoylated proteins also require depalmitoylation prior to lysosomal degradation, demonstrating the significance of this process in protein sorting and turnover. Palmitoylation and depalmitoylation serve as particularly crucial regulators of protein function in neurons, where a specialized molecular architecture and cholesterol-rich membrane microdomains contribute to synaptic transmission. Three classes of depalmitoylating enzymes are currently recognized, the acyl protein thioesterases, α/β hydrolase domain-containing 17 proteins (ABHD17s), and the palmitoyl-protein thioesterases (PPTs). However, a clear picture of depalmitoylation has not yet emerged, in part because the enzyme-substrate relationships and specific functions of depalmitoylation are only beginning to be uncovered. Further, despite the finding that loss-of-function mutations affecting palmitoyl-protein thioesterase 1 (PPT1) function cause a severe pediatric neurodegenerative disease, the role of PPT1 as a depalmitoylase has attracted relatively little attention. Understanding the role of depalmitoylation by PPT1 in neuronal function is a fertile area for ongoing basic science and translational research that may have broader therapeutic implications for neurodegeneration. Here, we will briefly introduce the rapidly growing field surrounding protein palmitoylation and depalmitoylation, then will focus on the role of PPT1 in development, health, and neurological disease.
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Affiliation(s)
- Kevin P Koster
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL, United States
| | - Akira Yoshii
- Department of Anatomy and Cell Biology, University of Illinois at Chicago, Chicago, IL, United States.,Department of Pediatrics, University of Illinois at Chicago, Chicago, IL, United States.,Department of Neurology, University of Illinois at Chicago, Chicago, IL, United States
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61
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AMPAR Palmitoylation Tunes Synaptic Strength: Implications for Synaptic Plasticity and Disease. J Neurosci 2019; 39:5040-5043. [PMID: 31243093 DOI: 10.1523/jneurosci.0055-19.2019] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2019] [Revised: 04/18/2019] [Accepted: 04/20/2019] [Indexed: 11/21/2022] Open
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62
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Roosen DA, Blauwendraat C, Cookson MR, Lewis PA. DNAJC
proteins and pathways to parkinsonism. FEBS J 2019; 286:3080-3094. [DOI: 10.1111/febs.14936] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 03/21/2019] [Accepted: 05/21/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Dorien A. Roosen
- Laboratory of Neurogenetics National Institute on AgingNational Institutes of Health Bethesda MD USA
- School of Pharmacy University of Reading UK
| | - Cornelis Blauwendraat
- Laboratory of Neurogenetics National Institute on AgingNational Institutes of Health Bethesda MD USA
| | - Mark R. Cookson
- Laboratory of Neurogenetics National Institute on AgingNational Institutes of Health Bethesda MD USA
| | - Patrick A. Lewis
- School of Pharmacy University of Reading UK
- Department of Neurodegenerative Disease UCL Institute of Neurology London UK
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63
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Follett J, Fox JD, Gustavsson EK, Kadgien C, Munsie LN, Cao LP, Tatarnikov I, Milnerwood AJ, Farrer MJ. DNAJC13 p.Asn855Ser, implicated in familial parkinsonism, alters membrane dynamics of sorting nexin 1. Neurosci Lett 2019; 706:114-122. [PMID: 31082451 DOI: 10.1016/j.neulet.2019.04.043] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2019] [Revised: 04/10/2019] [Accepted: 04/20/2019] [Indexed: 10/26/2022]
Abstract
DNAJC13 (RME-8) is a core co-chaperone that facilitates membrane recycling and cargo sorting of endocytosed proteins. DNAJ/Hsp40 (heat shock protein 40) proteins are highly conserved throughout evolution and mediate the folding of nascent proteins, and the unfolding, refolding or degradation of misfolded proteins while assisting in associated-membrane translocation. DNAJC13 is one of five DNAJ 'C' class chaperone variants implicated in monogenic parkinsonism. Here we examine the effect of the DNAJC13 disease-linked mutation (p.Asn855Ser) on its interacting partners, focusing on sorting nexin 1 (SNX1) membrane dynamics in primary cortical neurons derived from a novel Dnajc13 p.Asn855Ser knock-in (DKI) mouse model. Dnajc13 p.Asn855Ser mutant and wild type protein expression were equivalent in mature heterozygous cultures (DIV21). While SNX1-positive puncta density, area, and WASH-retromer assembly were comparable between cultures derived from DKI and wild type littermates, the formation of SNX1-enriched tubules in DKI neuronal cultures was significantly increased. Thus, Dnajc13 p.Asn855Ser disrupts SNX1 membrane-tubulation and trafficking, analogous to results from RME-8 depletion studies. The data suggest the mutation confers a dominant-negative gain-of-function in RME-8. Implications for the pathogenesis of Parkinson's disease are discussed.
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Affiliation(s)
- Jordan Follett
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, B.C., Canada.
| | - Jesse D Fox
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, B.C., Canada
| | - Emil K Gustavsson
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, B.C., Canada; Department of Neurology, St. Olav's Hospital, Trondheim, Norway
| | - Chelsie Kadgien
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, B.C., Canada
| | - Lise N Munsie
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, B.C., Canada
| | - Li Ping Cao
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, B.C., Canada
| | - Igor Tatarnikov
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, B.C., Canada
| | - Austen J Milnerwood
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, B.C., Canada
| | - Matthew J Farrer
- Centre for Applied Neurogenetics, Department of Medical Genetics, University of British Columbia, Vancouver, B.C., Canada
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Jepson JEC, Praschberger R, Krishnakumar SS. Mechanisms of Neurological Dysfunction in GOSR2 Progressive Myoclonus Epilepsy, a Golgi SNAREopathy. Neuroscience 2019; 420:41-49. [PMID: 30954670 DOI: 10.1016/j.neuroscience.2019.03.057] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 03/22/2019] [Accepted: 03/26/2019] [Indexed: 10/27/2022]
Abstract
Successive fusion events between transport vesicles and their target membranes mediate trafficking of secreted, membrane- and organelle-localised proteins. During the initial steps of this process, termed the secretory pathway, COPII vesicles bud from the endoplasmic reticulum (ER) and fuse with the cis-Golgi membrane, thus depositing their cargo. This fusion step is driven by a quartet of SNARE proteins that includes the cis-Golgi t-SNARE Membrin, encoded by the GOSR2 gene. Mis-sense mutations in GOSR2 result in Progressive Myoclonus Epilepsy (PME), a severe neurological disorder characterised by ataxia, myoclonus and seizures in the absence of significant cognitive impairment. However, given the ubiquitous and essential function of ER-to-Golgi transport, why GOSR2 mutations cause neurological dysfunction and not lethality or a broader range of developmental defects has remained an enigma. Here we highlight new work that has shed light on this issue and incorporate insights into canonical and non-canonical secretory trafficking pathways in neurons to speculate as to the cellular and molecular mechanisms underlying GOSR2 PME. This article is part of a Special Issue entitled: SNARE proteins: a long journey of science in brain physiology and pathology: from molecular.
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Affiliation(s)
- James E C Jepson
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, UK.
| | - Roman Praschberger
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, UK
| | - Shyam S Krishnakumar
- Department of Clinical and Experimental Epilepsy, UCL Institute of Neurology, London, UK; Department of Cell Biology, Yale School of Medicine, New Haven, CT, USA
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Loss of postnatal quiescence of neural stem cells through mTOR activation upon genetic removal of cysteine string protein-α. Proc Natl Acad Sci U S A 2019; 116:8000-8009. [PMID: 30926666 DOI: 10.1073/pnas.1817183116] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
Neural stem cells continuously generate newborn neurons that integrate into and modify neural circuitry in the adult hippocampus. The molecular mechanisms that regulate or perturb neural stem cell proliferation and differentiation, however, remain poorly understood. Here, we have found that mouse hippocampal radial glia-like (RGL) neural stem cells express the synaptic cochaperone cysteine string protein-α (CSP-α). Remarkably, in CSP-α knockout mice, RGL stem cells lose quiescence postnatally and enter into a high-proliferation regime that increases the production of neural intermediate progenitor cells, thereby exhausting the hippocampal neural stem cell pool. In cell culture, stem cells in hippocampal neurospheres display alterations in proliferation for which hyperactivation of the mechanistic target of rapamycin (mTOR) signaling pathway is the primary cause of neurogenesis deregulation in the absence of CSP-α. In addition, RGL cells lose quiescence upon specific conditional targeting of CSP-α in adult neural stem cells. Our findings demonstrate an unanticipated cell-autonomic and circuit-independent disruption of postnatal neurogenesis in the absence of CSP-α and highlight a direct or indirect CSP-α/mTOR signaling interaction that may underlie molecular mechanisms of brain dysfunction and neurodegeneration.
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Abstract
OBJECTIVE Neuronal ceroid-lipofuscinoses are a heterogeneous group of inherited disorders in which abnormal lipopigments form lysosomal inclusion bodies in neurons. Kufs disease is rare, and clinical symptoms include seizures, progressive cognitive impairment, and myoclonus. Most cases of Kufs disease are autosomal recessive; however, there have been a few case reports of an autosomal dominant form linked to mutations within the DNAJC5 gene. METHODS We describe a family with Kufs disease in which the proband and three of her four children presented with cognitive impairment, seizures, and myoclonus. RESULTS Genetic testing of all four children was positive for a c.346_348delCTC(p.L116del) mutation in the DNAJC5 gene. The proband brain had an abundance of neuronal lipofuscin in the cerebral cortex, striatum, amygdala, hippocampus, substantia nigra, and cerebellum. There were no amyloid plaques or neurofibrillary tangles. Immunohistochemistry demonstrated that the cholinergic neurons and cholinergic projection fibers were spared, but there was a profound loss of choline acetyltransferase within the caudate, putamen, and basal forebrain. This suggests a loss of choline acetyltransferase as opposed to a loss of the neurons. CONCLUSIONS This report describes the clinical history of autosomal dominant Kufs disease, the genetic mutation within the DNAJC5 gene, and the neuropathological findings demonstrating depletion of choline acetyltransferase in the brain.
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Mukherjee AB, Appu AP, Sadhukhan T, Casey S, Mondal A, Zhang Z, Bagh MB. Emerging new roles of the lysosome and neuronal ceroid lipofuscinoses. Mol Neurodegener 2019; 14:4. [PMID: 30651094 PMCID: PMC6335712 DOI: 10.1186/s13024-018-0300-6] [Citation(s) in RCA: 59] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2018] [Accepted: 12/04/2018] [Indexed: 12/04/2022] Open
Abstract
Neuronal Ceroid Lipofuscinoses (NCLs), commonly known as Batten disease, constitute a group of the most prevalent neurodegenerative lysosomal storage disorders (LSDs). Mutations in at least 13 different genes (called CLNs) cause various forms of NCLs. Clinically, the NCLs manifest early impairment of vision, progressive decline in cognitive and motor functions, seizures and a shortened lifespan. At the cellular level, all NCLs show intracellular accumulation of autofluorescent material (called ceroid) and progressive neuron loss. Despite intense studies the normal physiological functions of each of the CLN genes remain poorly understood. Consequently, the development of mechanism-based therapeutic strategies remains challenging. Endolysosomal dysfunction contributes to pathogenesis of virtually all LSDs. Studies within the past decade have drastically changed the notion that the lysosomes are merely the terminal degradative organelles. The emerging new roles of the lysosome include its central role in nutrient-dependent signal transduction regulating metabolism and cellular proliferation or quiescence. In this review, we first provide a brief overview of the endolysosomal and autophagic pathways, lysosomal acidification and endosome-lysosome and autophagosome-lysosome fusions. We emphasize the importance of these processes as their dysregulation leads to pathogenesis of many LSDs including the NCLs. We also describe what is currently known about each of the 13 CLN genes and their products and how understanding the emerging new roles of the lysosome may clarify the underlying pathogenic mechanisms of the NCLs. Finally, we discuss the current and emerging therapeutic strategies for various NCLs.
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Affiliation(s)
- Anil B. Mukherjee
- Section on Developmental Genetics, Program on Endocrinology and Molecular Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, The National Institutes of Health, Bethesda, Maryland 20892-1830 USA
| | - Abhilash P. Appu
- Section on Developmental Genetics, Program on Endocrinology and Molecular Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, The National Institutes of Health, Bethesda, Maryland 20892-1830 USA
| | - Tamal Sadhukhan
- Section on Developmental Genetics, Program on Endocrinology and Molecular Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, The National Institutes of Health, Bethesda, Maryland 20892-1830 USA
| | - Sydney Casey
- Section on Developmental Genetics, Program on Endocrinology and Molecular Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, The National Institutes of Health, Bethesda, Maryland 20892-1830 USA
| | - Avisek Mondal
- Section on Developmental Genetics, Program on Endocrinology and Molecular Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, The National Institutes of Health, Bethesda, Maryland 20892-1830 USA
| | - Zhongjian Zhang
- Section on Developmental Genetics, Program on Endocrinology and Molecular Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, The National Institutes of Health, Bethesda, Maryland 20892-1830 USA
- Present address: Institute of Psychiatry and Neuroscience, Xinxiang Medical University, Xinxiang, 453003 Henan China
| | - Maria B. Bagh
- Section on Developmental Genetics, Program on Endocrinology and Molecular Genetics, Eunice Kennedy Shriver National Institute of Child Health and Human Development, The National Institutes of Health, Bethesda, Maryland 20892-1830 USA
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Berkovic SF, Oliver KL, Canafoglia L, Krieger P, Damiano JA, Hildebrand MS, Morbin M, Vears DF, Sofia V, Giuliano L, Garavaglia B, Simonati A, Santorelli FM, Gambardella A, Labate A, Belcastro V, Castellotti B, Ozkara C, Zeman A, Rankin J, Mole SE, Aguglia U, Farrell M, Rajagopalan S, McDougall A, Brammah S, Andermann F, Andermann E, Dahl HHM, Franceschetti S, Carpenter S. Kufs disease due to mutation ofCLN6: clinical, pathological and molecular genetic features. Brain 2018; 142:59-69. [DOI: 10.1093/brain/awy297] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 10/02/2018] [Indexed: 01/22/2023] Open
Affiliation(s)
- Samuel F Berkovic
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia
| | - Karen L Oliver
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia
| | - Laura Canafoglia
- Department of Neurophysiology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Penina Krieger
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia
| | - John A Damiano
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia
| | - Michael S Hildebrand
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia
| | - Michela Morbin
- Neuropathology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Danya F Vears
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia
| | - Vito Sofia
- Department of Medical and Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, Section of Neurosciences, University of Catania, Catania, Italy
| | - Loretta Giuliano
- Department of Medical and Surgical Sciences and Advanced Technologies “G.F. Ingrassia”, Section of Neurosciences, University of Catania, Catania, Italy
| | - Barbara Garavaglia
- Medical Genetics and Neurogenetics Unit, Bicocca Laboratories, Fondazione IRCCS Istituto Neurologico “Carlo Besta”, Milan, Italy
| | - Alessandro Simonati
- Department of Neuroscience, Biomedicine, Movement-Neurology and Neuropathology, Policlinico GB Rossi, P.le LA Scuro, Verona, Italy
| | | | - Antonio Gambardella
- Institute of Neurology, University Magna Græcia Catanzaro, Italy; Institute of Molecular Bioimaging and Physiology of the National Research Council (IBFM-CNR) Germaneto, CZ, Italy
| | - Angelo Labate
- Institute of Neurology, University Magna Græcia Catanzaro, Italy; Institute of Molecular Bioimaging and Physiology of the National Research Council (IBFM-CNR) Germaneto, CZ, Italy
| | | | - Barbara Castellotti
- Unit Genetics of Neurodegenerative and Metabolic Diseases, IRCCS Foundation C. Besta Neurological Institute, Milan, Italy
| | - Cigdem Ozkara
- Istanbul University-Cerrahpaşa, Medical Faculty, Department of Neurology, Istanbul, Turkey
| | - Adam Zeman
- University of Exeter Medical School, St Luke’s Campus, Magdalen Road, Exeter EX1 2LU, UK
| | - Julia Rankin
- Clinical Genetics, Royal Devon and Exeter Hospital, Gladstone Road, Exeter, UK
| | - Sara E Mole
- MRC Laboratory for Molecular Cell Biology and UCL GOS Institute of Child Health, Department of Genetics, Evolution and Environment, University College London, London, UK
| | - Umberto Aguglia
- Department of Medical and Surgical Sciences, University Magna Græcia Catanzaro, Italy
- Institute of Molecular Bioimaging and Physiology of the National Research Council (IBFM-CNR) Germaneto, CZ, Italy
| | - Michael Farrell
- Department of Neuropathology, Beaumont Hospital, Dublin 9, Ireland
| | - Sulekha Rajagopalan
- Department of Clinical Genetics, Liverpool Hospital, Liverpool, New South Wales Australia
| | - Alan McDougall
- Department of Neurology, Liverpool Hospital, Liverpool, New South Wales Australia
| | - Susan Brammah
- Central Sydney Electron Microscope Unit, Concord Repatriation General Hospital, Concord, New South Wales, Australia
| | - Frederick Andermann
- Epilepsy Research Group, Montreal Neurological Hospital and Institute, Montreal, Quebec, Canada
- Departments of Neurology and Neurosurgery and Paediatrics, McGill University, Montreal, Quebec, Canada
| | - Eva Andermann
- Epilepsy Research Group, Montreal Neurological Hospital and Institute, Montreal, Quebec, Canada
- Departments of Neurology and Neurosurgery and Paediatrics, McGill University, Montreal, Quebec, Canada
| | - Hans-Henrik M Dahl
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia
| | - Silvana Franceschetti
- Department of Neurophysiology, Fondazione IRCCS Istituto Neurologico Carlo Besta, Milan, Italy
| | - Stirling Carpenter
- Consultant in Neuropathology, Centro Hospitalar São João, Porto, Portugal
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Sheth J, Mistri M, Bhavsar R, Pancholi D, Kamate M, Gupta N, Kabra M, Mehta S, Nampoothiri S, Thakker A, Jain V, Shah R, Sheth F. Batten disease: biochemical and molecular characterization revealing novel PPT1 and TPP1 gene mutations in Indian patients. BMC Neurol 2018; 18:203. [PMID: 30541466 PMCID: PMC6292089 DOI: 10.1186/s12883-018-1206-1] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2018] [Accepted: 11/27/2018] [Indexed: 12/12/2022] Open
Abstract
Background Neuronal ceroid lipofuscinoses type I and type II (NCL1 and NCL2) also known as Batten disease are the commonly observed neurodegenerative lysosomal storage disorder caused by mutations in the PPT1 and TPP1 genes respectively. Till date, nearly 76 mutations in PPT1 and approximately 140 mutations, including large deletion/duplications, in TPP1 genes have been reported in the literature. The present study includes 34 unrelated Indian patients (12 females and 22 males) having epilepsy, visual impairment, cerebral atrophy, and cerebellar atrophy. Methods The biochemical investigation involved measuring the palmitoyl protein thioesterase 1 and tripeptidy peptidase l enzyme activity from the leukocytes. Based on the biochemical analysis all patients were screened for variations in either PPT1 gene or TPP1 gene using bidirectional Sanger sequencing. In cases where Sanger sequencing results was uninformative Multiplex Ligation-dependent Probe Amplification technique was employed. The online tools performed the protein homology modeling and orthologous conservation of the novel variants. Results Out of 34 patients analyzed, the biochemical assay confirmed 12 patients with NCL1 and 22 patients with NCL2. Molecular analysis of PPT1 gene in NCL1 patients revealed three known mutations (p.Val181Met, p.Asn110Ser, and p.Trp186Ter) and four novel variants (p.Glu178Asnfs*13, p.Pro238Leu, p.Cys45Arg, and p.Val236Gly). In the case of NCL2 patients, the TPP1 gene analysis identified seven known mutations and eight novel variants. Overall these 15 variants comprised seven missense variants (p.Met345Leu, p.Arg339Trp, p.Arg339Gln, p.Arg206Cys, p.Asn286Ser, p.Arg152Ser, p.Tyr459Ser), four frameshift variants (p.Ser62Argfs*19, p.Ser153Profs*19, p.Phe230Serfs*28, p.Ile484Aspfs*7), three nonsense variants (p.Phe516*, p.Arg208*, p.Tyr157*) and one intronic variant (g.2023_2024insT). No large deletion/duplication was identified in three NCL1 patients where Sanger sequencing study was normal. Conclusion The given study reports 34 patients with Batten disease. In addition, the study contributes four novel variants to the spectrum of PPT1 gene mutations and eight novel variants to the TPP1 gene mutation data. The novel pathogenic variant p.Pro238Leu occurred most commonly in the NCL1 cohort while the occurrence of a known pathogenic mutation p.Arg206Cys dominated in the NCL2 cohort. This study provides an insight into the molecular pathology of NCL1 and NCL2 disease for Indian origin patients. Electronic supplementary material The online version of this article (10.1186/s12883-018-1206-1) contains supplementary material, which is available to authorized users.
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Affiliation(s)
- Jayesh Sheth
- FRIGE's Institute of Human Genetics, FRIGE House, Jodhpur Gam Road, Satellite, Ahmedabad, Gujarat, 380015, India.
| | - Mehul Mistri
- FRIGE's Institute of Human Genetics, FRIGE House, Jodhpur Gam Road, Satellite, Ahmedabad, Gujarat, 380015, India
| | - Riddhi Bhavsar
- FRIGE's Institute of Human Genetics, FRIGE House, Jodhpur Gam Road, Satellite, Ahmedabad, Gujarat, 380015, India
| | - Dhairya Pancholi
- FRIGE's Institute of Human Genetics, FRIGE House, Jodhpur Gam Road, Satellite, Ahmedabad, Gujarat, 380015, India
| | - Mahesh Kamate
- Department of Pediatric Neurology, KLES Prabhakar Kore Hospital, Belgaum, Karnataka, 590010, India
| | - Neerja Gupta
- Division of Genetics (Pediatrics), All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Madhulika Kabra
- Division of Genetics (Pediatrics), All India Institute of Medical Sciences, New Delhi, 110029, India
| | - Sanjiv Mehta
- Usha-Deep Children Neurology and Epilepsy clinic, Ahmedabad, 380014, India
| | - Sheela Nampoothiri
- Department of Pediatric Genetics, Amrita Institute of Medical Science and Research Centre, Kochi, Kerala, 682041, India
| | - Arpita Thakker
- Department of Neurology, Lokmanya Tilak Medical College, Sion Hospital, Mumbai, Maharashtra, 400022, India
| | - Vivek Jain
- Department of Neurology, Santokba Durlabhji Hospital, Jaipur, 302015, Rajasthan, India
| | - Raju Shah
- Ankur Neonatal Nursery, Ahmedabad, 380009, Gujarat, India
| | - Frenny Sheth
- FRIGE's Institute of Human Genetics, FRIGE House, Jodhpur Gam Road, Satellite, Ahmedabad, Gujarat, 380015, India
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Lee J, Ye Y. The Roles of Endo-Lysosomes in Unconventional Protein Secretion. Cells 2018; 7:cells7110198. [PMID: 30400277 PMCID: PMC6262434 DOI: 10.3390/cells7110198] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2018] [Revised: 10/30/2018] [Accepted: 10/31/2018] [Indexed: 12/21/2022] Open
Abstract
Protein secretion in general depends on signal sequence (also named leader sequence), a hydrophobic segment located at or close to the NH2-terminus of a secretory or membrane protein. This sequence guides the entry of nascent polypeptides into the lumen or membranes of the endoplasmic reticulum (ER) for folding, assembly, and export. However, evidence accumulated in recent years has suggested the existence of a collection of unconventional protein secretion (UPS) mechanisms that are independent of the canonical vesicular trafficking route between the ER and the plasma membrane (PM). These UPS mechanisms export soluble proteins bearing no signal sequence. The list of UPS cargos is rapidly expanding, along with the implicated biological functions, but molecular mechanisms accountable for the secretion of leaderless proteins are still poorly defined. This review summarizes our current understanding of UPS mechanisms with an emphasis on the emerging role of endo-lysosomes in this process.
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Affiliation(s)
- Juhyung Lee
- Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
| | - Yihong Ye
- Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892, USA.
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Ye Y. Regulation of protein homeostasis by unconventional protein secretion in mammalian cells. Semin Cell Dev Biol 2018; 83:29-35. [PMID: 29549062 PMCID: PMC6151168 DOI: 10.1016/j.semcdb.2018.03.006] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2017] [Revised: 03/01/2018] [Accepted: 03/09/2018] [Indexed: 10/17/2022]
Abstract
Secretion of proteins lacking leader sequence was deemed rare and unconventional, only accountable for the export of a limited number of clients by mechanisms that are poorly defined. However, recent studies have shown that many leaderless proteins misfolded in the cytoplasm can be selectively exported to extracellular milieu via an unconventional secretory path termed Misfolding-Associated Protein Secretion (MAPS). This process uses the surface of the endoplasmic reticulum (ER) as a platform to enrich abnormally folded polypeptides, and then transport them into the lumen of ER-associated late endosomes for subsequent secretion. Elimination of misfolded proteins via MAPS appears to serve a role in protein homeostasis maintenance, particularly for stressed cells bearing an excess of protein quality control (PQC) burden.
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Affiliation(s)
- Yihong Ye
- Laboratory of Molecular Biology, National Institute of Diabetes and Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD 20892 USA.
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Kozina AA, Okuneva EG, Baryshnikova NV, Krasnenko AY, Tsukanov KY, Klimchuk OI, Kondakova OB, Larionova AN, Batysheva TT, Surkova EI, Shatalov PA, Ilinsky VV. A novel MFSD8 mutation in a Russian patient with neuronal ceroid lipofuscinosis type 7: a case report. BMC MEDICAL GENETICS 2018; 19:151. [PMID: 30144815 PMCID: PMC6109285 DOI: 10.1186/s12881-018-0669-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 08/17/2018] [Indexed: 12/30/2022]
Abstract
Background Neuronal ceroid lipofuscinoses (NCLs) are the most common autosomal recessive neurodegenerative disorders in children. Clinical manifestations include progressive cognitive decline, motor impairment, ataxia, visual loss, seizures and early death. To date more than 440 NCL-causing mutations in 13 genes are known. Case presentation We report clinical and genetic characteristics of a 5-year-old girl affected by ceroid lipofuscinosis type 7 (NCL7). She had progressive motor and mental deterioration since the age of 2,5 years. Later she developed progressive vision loss, stereotypies, action myoclonus and epilepsy. By the age of 5 years she stopped walking. Based on symptoms, diagnosis of Rett syndrome was suggested, but no abnormalities were detected in MeCP2. We identified a novel homozygous mutation in MFSD8 gene (c.525 T > A, p.Cys175Ter). To our knowledge, this is the first report of MFSD8 gene mutation in a Russian patient with variant late-infantile NCL. Conclusions Our results enlarge mutational spectrum of ceroid lipofuscinosis type 7 and demonstrate tremendous diagnosis value of exome sequencing for pediatric NCLs. Also we confirmed that NCL should be suspected in patients with Rett-like phenotype at onset and negative MECP2 mutation.
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Affiliation(s)
- Anastasiya Aleksandrovna Kozina
- Institute of Biomedical Chemistry, Pogodinskaya street 10 building 8, 119121, Moscow, Russia.,Genotek Ltd, Nastavnicheskii pereulok 17/1, 105120, Moscow, Russia
| | | | - Natalia Vladimirovna Baryshnikova
- Genotek Ltd, Nastavnicheskii pereulok 17/1, 105120, Moscow, Russia.,Pirogov Russian National Research Medical University, Ostrovitianova street 1, 117997, Moscow, Russia
| | - Anna Yurievna Krasnenko
- Genotek Ltd, Nastavnicheskii pereulok 17/1, 105120, Moscow, Russia.,Pirogov Russian National Research Medical University, Ostrovitianova street 1, 117997, Moscow, Russia
| | | | | | - Olga Borisovna Kondakova
- Scientific and Practical Centre of Pediatric psychoneurology of Moscow Healthcare Department, Michurinsky prospect, 74, 119602, Moscow, Russia
| | - Anna Nikolaevna Larionova
- Scientific and Practical Centre of Pediatric psychoneurology of Moscow Healthcare Department, Michurinsky prospect, 74, 119602, Moscow, Russia
| | - Tatyana Timofeevna Batysheva
- Scientific and Practical Centre of Pediatric psychoneurology of Moscow Healthcare Department, Michurinsky prospect, 74, 119602, Moscow, Russia
| | | | - Peter Alekseevich Shatalov
- Genotek Ltd, Nastavnicheskii pereulok 17/1, 105120, Moscow, Russia.,Veltischev Research and Clinical Institute for Pediatrics of the Pirogov Russian National Research Medical University, Taldomskaya str 2, 125412, Moscow, Russia
| | - Valery Vladimirovich Ilinsky
- Institute of Biomedical Chemistry, Pogodinskaya street 10 building 8, 119121, Moscow, Russia.,Genotek Ltd, Nastavnicheskii pereulok 17/1, 105120, Moscow, Russia.,Pirogov Russian National Research Medical University, Ostrovitianova street 1, 117997, Moscow, Russia.,Vavilov Institute of General Genetics, Gubkina street 3, 119333, Moscow, Russia
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Presynaptic neurodegeneration: CSP-α/DNAJC5 at the synaptic vesicle cycle and beyond. CURRENT OPINION IN PHYSIOLOGY 2018. [DOI: 10.1016/j.cophys.2018.06.001] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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Soukup SF, Vanhauwaert R, Verstreken P. Parkinson's disease: convergence on synaptic homeostasis. EMBO J 2018; 37:embj.201898960. [PMID: 30065071 DOI: 10.15252/embj.201898960] [Citation(s) in RCA: 58] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2018] [Revised: 05/07/2018] [Accepted: 07/06/2018] [Indexed: 01/01/2023] Open
Abstract
Parkinson's disease, the second most common neurodegenerative disorder, affects millions of people globally. There is no cure, and its prevalence will double by 2030. In recent years, numerous causative genes and risk factors for Parkinson's disease have been identified and more than half appear to function at the synapse. Subtle synaptic defects are thought to precede blunt neuronal death, but the mechanisms that are dysfunctional at synapses are only now being unraveled. Here, we review recent work and propose a model where different Parkinson proteins interact in a cell compartment-specific manner at the synapse where these proteins regulate endocytosis and autophagy. While this field is only recently emerging, the work suggests that the loss of synaptic homeostasis may contribute to neurodegeneration and is a key player in Parkinson's disease.
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Affiliation(s)
- Sandra-Fausia Soukup
- VIB-KU Leuven Center for Brain& Disease Research, Leuven, Belgium .,Department of Neurosciences, KU Leuven, Leuven, Belgium
| | - Roeland Vanhauwaert
- VIB-KU Leuven Center for Brain& Disease Research, Leuven, Belgium.,Department of Neurosciences, KU Leuven, Leuven, Belgium
| | - Patrik Verstreken
- VIB-KU Leuven Center for Brain& Disease Research, Leuven, Belgium .,Department of Neurosciences, KU Leuven, Leuven, Belgium
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75
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Abstract
Discovering and characterizing protein–protein interactions (PPI s) that contribute to cellular homeostasis, development, and disease is a key priority in proteomics. Numerous assays for protein–protein interactions have been developed, but each one comes with its own strengths, weaknesses, and false‐positive/false‐negative rates. Therefore, it seems rather intuitive that combining multiple assays is beneficial for robust and reliable discovery of interactions. Along those lines, in their recent study, Wanker and colleagues (Trepte et al , 2018 ) combined two complementary and quantitative interaction assays in one pot. One assay is luminescence‐based and depends on protein proximity in living cells, while the other relies on formation of more stable complexes detected by co‐precipitation with a luminescence‐based readout, which facilitates confident identification and quantitation of interactions in high throughput.
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Affiliation(s)
- Mikko Taipale
- Department of Molecular GeneticsDonnelly Centre for Cellular and Biomolecular ResearchUniversity of TorontoTorontoONCanada
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76
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Trepte P, Kruse S, Kostova S, Hoffmann S, Buntru A, Tempelmeier A, Secker C, Diez L, Schulz A, Klockmeier K, Zenkner M, Golusik S, Rau K, Schnoegl S, Garner CC, Wanker EE. LuTHy: a double-readout bioluminescence-based two-hybrid technology for quantitative mapping of protein-protein interactions in mammalian cells. Mol Syst Biol 2018; 14:e8071. [PMID: 29997244 PMCID: PMC6039870 DOI: 10.15252/msb.20178071] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Revised: 06/08/2018] [Accepted: 06/15/2018] [Indexed: 12/12/2022] Open
Abstract
Information on protein-protein interactions (PPIs) is of critical importance for studying complex biological systems and developing therapeutic strategies. Here, we present a double-readout bioluminescence-based two-hybrid technology, termed LuTHy, which provides two quantitative scores in one experimental procedure when testing binary interactions. PPIs are first monitored in cells by quantification of bioluminescence resonance energy transfer (BRET) and, following cell lysis, are again quantitatively assessed by luminescence-based co-precipitation (LuC). The double-readout procedure detects interactions with higher sensitivity than traditional single-readout methods and is broadly applicable, for example, for detecting the effects of small molecules or disease-causing mutations on PPIs. Applying LuTHy in a focused screen, we identified 42 interactions for the presynaptic chaperone CSPα, causative to adult-onset neuronal ceroid lipofuscinosis (ANCL), a progressive neurodegenerative disease. Nearly 50% of PPIs were found to be affected when studying the effect of the disease-causing missense mutations L115R and ∆L116 in CSPα with LuTHy. Our study presents a robust, sensitive research tool with high utility for investigating the molecular mechanisms by which disease-associated mutations impair protein activity in biological systems.
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Affiliation(s)
- Philipp Trepte
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Sabrina Kruse
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Simona Kostova
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Sheila Hoffmann
- Synaptopathy, German Center for Neurodegenerative Diseases, Berlin, Germany
| | - Alexander Buntru
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Anne Tempelmeier
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Christopher Secker
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
- Department of Neurology, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Lisa Diez
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Aline Schulz
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Konrad Klockmeier
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Martina Zenkner
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Sabrina Golusik
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Kirstin Rau
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Sigrid Schnoegl
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
| | - Craig C Garner
- Synaptopathy, German Center for Neurodegenerative Diseases, Berlin, Germany
| | - Erich E Wanker
- Neuroproteomics, Max Delbrück Center for Molecular Medicine and Berlin Institute of Health, Berlin, Germany
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77
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Abstract
Cell-to-cell transmission of misfolded proteins propagates proteotoxic stress in multicellular organisms when transmitted polypeptides serve as a seeding template to cause protein misfolding in recipient cells, but how misfolded proteins are released from cells to initiate this process is unclear. Misfolding-associated protein secretion (MAPS) is an unconventional protein-disposing mechanism that specifically exports misfolded cytosolic proteins including various neurodegenerative disease-causing proteins. Here we establish the HSC70 co-chaperone DNAJC5 as an essential mediator of MAPS. USP19, a previously uncovered MAPS regulator binds HSC70 and acts upstream of HSC70 and DNAJC5. We further show that as a membrane-associated protein localized preferentially to late endosomes and lysosomes, DNAJC5 can chaperone MAPS client proteins to the cell exterior. Intriguingly, upon secretion, misfolded proteins can be taken up through endocytosis and eventually degraded in the lysosome. Collectively, these findings suggest a transcellular protein quality control regulatory pathway in which a deubiquitinase-chaperone axis forms a “triaging hub”, transferring aberrant polypeptides from stressed cells to healthy ones for disposal.
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78
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Zarouchlioti C, Parfitt DA, Li W, Gittings LM, Cheetham ME. DNAJ Proteins in neurodegeneration: essential and protective factors. Philos Trans R Soc Lond B Biol Sci 2018; 373:20160534. [PMID: 29203718 PMCID: PMC5717533 DOI: 10.1098/rstb.2016.0534] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/08/2017] [Indexed: 12/16/2022] Open
Abstract
Maintenance of protein homeostasis is vitally important in post-mitotic cells, particularly neurons. Neurodegenerative diseases such as polyglutamine expansion disorders-like Huntington's disease or spinocerebellar ataxia (SCA), Alzheimer's disease, fronto-temporal dementia (FTD), amyotrophic lateral sclerosis (ALS) and Parkinson's disease-are often characterized by the presence of inclusions of aggregated protein. Neurons contain complex protein networks dedicated to protein quality control and maintaining protein homeostasis, or proteostasis. Molecular chaperones are a class of proteins with prominent roles in maintaining proteostasis, which act to bind and shield hydrophobic regions of nascent or misfolded proteins while allowing correct folding, conformational changes and enabling quality control. There are many different families of molecular chaperones with multiple functions in proteostasis. The DNAJ family of molecular chaperones is the largest chaperone family and is defined by the J-domain, which regulates the function of HSP70 chaperones. DNAJ proteins can also have multiple other protein domains such as ubiquitin-interacting motifs or clathrin-binding domains leading to diverse and specific roles in the cell, including targeting client proteins for degradation via the proteasome, chaperone-mediated autophagy and uncoating clathrin-coated vesicles. DNAJ proteins can also contain ER-signal peptides or mitochondrial leader sequences, targeting them to specific organelles in the cell. In this review, we discuss the multiple roles of DNAJ proteins and in particular focus on the role of DNAJ proteins in protecting against neurodegenerative diseases caused by misfolded proteins. We also discuss the role of DNAJ proteins as direct causes of inherited neurodegeneration via mutations in DNAJ family genes.This article is part of the theme issue 'Heat shock proteins as modulators and therapeutic targets of chronic disease: an integrated perspective'.
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Affiliation(s)
| | - David A Parfitt
- UCL Institute of Ophthalmology, 11-43 Bath Street, London EC1 V 9EL, UK
| | - Wenwen Li
- UCL Institute of Ophthalmology, 11-43 Bath Street, London EC1 V 9EL, UK
| | - Lauren M Gittings
- UCL Institute of Ophthalmology, 11-43 Bath Street, London EC1 V 9EL, UK
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79
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van den Ameele J, Jedlickova I, Pristoupilova A, Sieben A, Van Mossevelde S, Ceuterick-de Groote C, Hůlková H, Matej R, Meurs A, Van Broeckhoven C, Berkovic SF, Santens P, Kmoch S, Dermaut B. Teenage-onset progressive myoclonic epilepsy due to a familial C9orf72 repeat expansion. Neurology 2018; 90:e658-e663. [PMID: 29352102 DOI: 10.1212/wnl.0000000000004999] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2017] [Accepted: 11/14/2017] [Indexed: 11/15/2022] Open
Abstract
BACKGROUND The progressive myoclonic epilepsies (PME) are a heterogeneous group of disorders in which a specific diagnosis cannot be made in a subset of patients, despite exhaustive investigation. C9orf72 repeat expansions are emerging as an important causal factor in several adult-onset neurodegenerative disorders, in particular frontotemporal lobar degeneration and amyotrophic lateral sclerosis. An association with PME has not been reported previously. OBJECTIVE To identify the causative mutation in a Belgian family where the proband had genetically unexplained PME. RESULTS We report a 33-year old woman who had epilepsy since the age of 15 and then developed progressive cognitive deterioration and multifocal myoclonus at the age of 18. The family history suggested autosomal dominant inheritance of psychiatric disorders, epilepsy, and dementia. Thorough workup for PME including whole exome sequencing did not reveal an underlying cause, but a C9orf72 repeat expansion was found in our patient and affected relatives. Brain biopsy confirmed the presence of characteristic p62-positive neuronal cytoplasmic inclusions. CONCLUSION C9orf72 mutation analysis should be considered in patients with PME and psychiatric disorders or dementia, even when the onset is in late childhood or adolescence.
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Affiliation(s)
- Jelle van den Ameele
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK.
| | - Ivana Jedlickova
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Anna Pristoupilova
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Anne Sieben
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Sara Van Mossevelde
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Chantal Ceuterick-de Groote
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Helena Hůlková
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Radoslav Matej
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Alfred Meurs
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Christine Van Broeckhoven
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Samuel F Berkovic
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Patrick Santens
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Stanislav Kmoch
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK
| | - Bart Dermaut
- From the Department of Neurology (J.v.d.A., A.S., A.M., P.S., B.D.) and Center for Medical Genetics (B.D.), Ghent University Hospital, Belgium; Institute for Inherited Metabolic Disorders (I.J., A.P., H.H., S.K.), Prague, First Faculty of Medicine, Charles University in Prague, Czech Republic; Neurodegenerative Brain Diseases Group (A.S., S.V.M., C.V.B.), Center for Molecular Neurology, VIB; Neuropathology and Laboratory of Neurochemistry and Behavior (A.S.), Laboratory of Neurogenetics (S.V.M., C.V.B.), and Laboratory of Neuromuscular Pathology and Translational Neurosciences (C.C.-d.G.), Institute Born-Bunge, University of Antwerp, Belgium; Institute of Pathology, First Faculty of Medicine (H.H., R.M.), Charles University and General University Hospital; Department of Pathology and Molecular Medicine (R.M.), National Reference Laboratory for Diagnostics of Human Prion Diseases, Thomayer Hospital, Prague, Czech Republic; Epilepsy Research Centre, Department of Medicine (S.F.B.), University of Melbourne, Austin Health, Heidelberg, Australia; and Inserm U1167 (B.D.), Laboratoire d'Excellence Distalz, Institut Pasteur de Lille, Longevity Research Center, Université de Lille, France. J.v.d.A. is currently affiliated with the Department of Clinical Neurosciences and WT/CRUK Gurdon Institute, University of Cambridge, UK.
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Hasegawa T, Yoshida S, Sugeno N, Kobayashi J, Aoki M. DnaJ/Hsp40 Family and Parkinson's Disease. Front Neurosci 2018; 11:743. [PMID: 29367843 PMCID: PMC5767785 DOI: 10.3389/fnins.2017.00743] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2017] [Accepted: 12/20/2017] [Indexed: 12/14/2022] Open
Abstract
Parkinson's disease (PD) is the second most common devastating neurodegenerative disorder after Alzheimer's disease. The precise molecular and cellular basis underlying PD still remains uncertain; however, accumulating evidence suggests that neuronal cell death is caused by a combination of environmental and genetic factors. Over the previous two decades, more than 20 genes have been identified as the cause of and/or risk for PD. Because sporadic and familial forms of PD have many similarities in clinical and neuropathological features, common molecular pathways, such as aberrant mitochondrial and protein homeostasis, are likely to exist in both conditions. Of the various genes and proteins involved in PD, the versatile DnaJ/Hsp40 co-chaperones have attracted particular attention since several genes encoding this protein family have been successively identified as the cause of the familial forms of PD/Parkinsonism. In this review, we will introduce the current knowledge regarding the integratory and modulatory effect of DnaJ/Hsp40 in various cellular functions and argue how the failure of these proteins may initiate and/or facilitate of the disease.
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Affiliation(s)
- Takafumi Hasegawa
- Division of Neurology, Department of Neuroscience and Sensory Organs, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Shun Yoshida
- Division of Neurology, Department of Neuroscience and Sensory Organs, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Naoto Sugeno
- Division of Neurology, Department of Neuroscience and Sensory Organs, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Junpei Kobayashi
- Division of Neurology, Department of Neuroscience and Sensory Organs, Tohoku University Graduate School of Medicine, Sendai, Japan
| | - Masashi Aoki
- Division of Neurology, Department of Neuroscience and Sensory Organs, Tohoku University Graduate School of Medicine, Sendai, Japan
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81
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Sambri I, D'Alessio R, Ezhova Y, Giuliano T, Sorrentino NC, Cacace V, De Risi M, Cataldi M, Annunziato L, De Leonibus E, Fraldi A. Lysosomal dysfunction disrupts presynaptic maintenance and restoration of presynaptic function prevents neurodegeneration in lysosomal storage diseases. EMBO Mol Med 2017; 9:112-132. [PMID: 27881461 PMCID: PMC5210158 DOI: 10.15252/emmm.201606965] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Lysosomal storage disorders (LSDs) are inherited diseases characterized by lysosomal dysfunction and often showing a neurodegenerative course. There is no cure to treat the central nervous system in LSDs. Moreover, the mechanisms driving neuronal degeneration in these pathological conditions remain largely unknown. By studying mouse models of LSDs, we found that neurodegeneration develops progressively with profound alterations in presynaptic structure and function. In these models, impaired lysosomal activity causes massive perikaryal accumulation of insoluble α‐synuclein and increased proteasomal degradation of cysteine string protein α (CSPα). As a result, the availability of both α‐synuclein and CSPα at nerve terminals strongly decreases, thus inhibiting soluble NSF attachment receptor (SNARE) complex assembly and synaptic vesicle recycling. Aberrant presynaptic SNARE phenotype is recapitulated in mice with genetic ablation of one allele of both CSPα and α‐synuclein. The overexpression of CSPα in the brain of a mouse model of mucopolysaccharidosis type IIIA, a severe form of LSD, efficiently re‐established SNARE complex assembly, thereby ameliorating presynaptic function, attenuating neurodegenerative signs, and prolonging survival. Our data show that neurodegenerative processes associated with lysosomal dysfunction may be presynaptically initiated by a concomitant reduction in α‐synuclein and CSPα levels at nerve terminals. They also demonstrate that neurodegeneration in LSDs can be slowed down by re‐establishing presynaptic functions, thus identifying synapse maintenance as a novel potentially druggable target for brain treatment in LSDs.
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Affiliation(s)
- Irene Sambri
- Telethon Institute of Genetics and Medicine (TIGEM), Naples, Italy
| | - Rosa D'Alessio
- Telethon Institute of Genetics and Medicine (TIGEM), Naples, Italy
| | - Yulia Ezhova
- Telethon Institute of Genetics and Medicine (TIGEM), Naples, Italy
| | - Teresa Giuliano
- Telethon Institute of Genetics and Medicine (TIGEM), Naples, Italy
| | | | - Vincenzo Cacace
- Telethon Institute of Genetics and Medicine (TIGEM), Naples, Italy
| | - Maria De Risi
- Telethon Institute of Genetics and Medicine (TIGEM), Naples, Italy.,Institute of Genetics and Biophysics, National Research Council, Naples, Italy
| | - Mauro Cataldi
- Department of Neuroscience, Reproductive and Odontostomatological Sciences Federico II University, Naples, Italy
| | - Lucio Annunziato
- Department of Neuroscience, Reproductive and Odontostomatological Sciences Federico II University, Naples, Italy
| | - Elvira De Leonibus
- Telethon Institute of Genetics and Medicine (TIGEM), Naples, Italy.,Institute of Genetics and Biophysics, National Research Council, Naples, Italy
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82
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Pezzini F, Bianchi M, Benfatto S, Griggio F, Doccini S, Carrozzo R, Dapkunas A, Delledonne M, Santorelli FM, Lalowski MM, Simonati A. The Networks of Genes Encoding Palmitoylated Proteins in Axonal and Synaptic Compartments Are Affected in PPT1 Overexpressing Neuronal-Like Cells. Front Mol Neurosci 2017; 10:266. [PMID: 28878621 PMCID: PMC5572227 DOI: 10.3389/fnmol.2017.00266] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2017] [Accepted: 08/07/2017] [Indexed: 12/13/2022] Open
Abstract
CLN1 disease (OMIM #256730) is an early childhood ceroid-lipofuscinosis associated with mutated CLN1, whose product Palmitoyl-Protein Thioesterase 1 (PPT1) is a lysosomal enzyme involved in the removal of palmitate residues from S-acylated proteins. In neurons, PPT1 expression is also linked to synaptic compartments. The aim of this study was to unravel molecular signatures connected to CLN1. We utilized SH-SY5Y neuroblastoma cells overexpressing wild type CLN1 (SH-p.wtCLN1) and five selected CLN1 patients’ mutations. The cellular distribution of wtPPT1 was consistent with regular processing of endogenous protein, partially detected inside Lysosomal Associated Membrane Protein 2 (LAMP2) positive vesicles, while the mutants displayed more diffuse cytoplasmic pattern. Transcriptomic profiling revealed 802 differentially expressed genes (DEGs) in SH-p.wtCLN1 (as compared to empty-vector transfected cells), whereas the number of DEGs detected in the two mutants (p.L222P and p.M57Nfs*45) was significantly lower. Bioinformatic scrutiny linked DEGs with neurite formation and neuronal transmission. Specifically, neuritogenesis and proliferation of neuronal processes were predicted to be hampered in the wtCLN1 overexpressing cell line, and these findings were corroborated by morphological investigations. Palmitoylation survey identified 113 palmitoylated protein-encoding genes in SH-p.wtCLN1, including 25 ones simultaneously assigned to axonal growth and synaptic compartments. A remarkable decrease in the expression of palmitoylated proteins, functionally related to axonal elongation (GAP43, CRMP1 and NEFM) and of the synaptic marker SNAP25, specifically in SH-p.wtCLN1 cells was confirmed by immunoblotting. Subsequent, bioinformatic network survey of DEGs assigned to the synaptic annotations linked 81 DEGs, including 23 ones encoding for palmitoylated proteins. Results obtained in this experimental setting outlined two affected functional modules (connected to the axonal and synaptic compartments), which can be associated with an altered gene dosage of wtCLN1. Moreover, these modules were interrelated with the pathological effects associated with loss of PPT1 function, similarly as observed in the Ppt1 knockout mice and patients with CLN1 disease.
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Affiliation(s)
- Francesco Pezzini
- Neurology (Neuropathology and Child Neurology), Department of Neuroscience, Biomedicine and Movement, University of VeronaVerona, Italy
| | - Marzia Bianchi
- Unit of Muscular and Neurodegenerative Disorders, IRCCS Bambino Gesù Children's HospitalRome, Italy
| | - Salvatore Benfatto
- Functional Genomics Center, Department of Biotechnology, University of VeronaVerona, Italy
| | - Francesca Griggio
- Functional Genomics Center, Department of Biotechnology, University of VeronaVerona, Italy
| | - Stefano Doccini
- Molecular Medicine, IRCCS Stella MarisCalambrone-Pisa, Italy
| | - Rosalba Carrozzo
- Unit of Muscular and Neurodegenerative Disorders, IRCCS Bambino Gesù Children's HospitalRome, Italy
| | - Arvydas Dapkunas
- Medicum, Biochemistry/Developmental Biology, Meilahti Clinical Proteomics Core Facility, University of HelsinkiHelsinki, Finland
| | - Massimo Delledonne
- Functional Genomics Center, Department of Biotechnology, University of VeronaVerona, Italy
| | | | - Maciej M Lalowski
- Medicum, Biochemistry/Developmental Biology, Meilahti Clinical Proteomics Core Facility, University of HelsinkiHelsinki, Finland
| | - Alessandro Simonati
- Neurology (Neuropathology and Child Neurology), Department of Neuroscience, Biomedicine and Movement, University of VeronaVerona, Italy
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83
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Ku CA, Hull S, Arno G, Vincent A, Carss K, Kayton R, Weeks D, Anderson GW, Geraets R, Parker C, Pearce DA, Michaelides M, MacLaren RE, Robson AG, Holder GE, Heon E, Raymond FL, Moore AT, Webster AR, Pennesi ME. Detailed Clinical Phenotype and Molecular Genetic Findings in CLN3-Associated Isolated Retinal Degeneration. JAMA Ophthalmol 2017; 135:749-760. [PMID: 28542676 DOI: 10.1001/jamaophthalmol.2017.1401] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Importance Mutations in genes traditionally associated with syndromic retinal disease are increasingly found to cause nonsyndromic inherited retinal degenerations. Mutations in CLN3 are classically associated with juvenile neuronal ceroid lipofuscinosis, a rare neurodegenerative disease with early retinal degeneration and progressive neurologic deterioration, but have recently also been identified in patients with nonsyndromic inherited retinal degenerations. To our knowledge, detailed clinical characterization of such cases has yet to be reported. Objective To provide detailed clinical, electrophysiologic, structural, and molecular genetic findings in nonsyndromic inherited retinal degenerations associated with CLN3 mutations. Design, Setting, and Participants A multi-institutional case series of 10 patients who presented with isolated nonsyndromic retinal disease and mutations in CLN3. Patient ages ranged from 16 to 70 years; duration of follow-up ranged from 3 to 29 years. Main Outcomes and Measures Longitudinal clinical evaluation, including full ophthalmic examination, multimodal retinal imaging, perimetry, and electrophysiology. Molecular analyses were performed using whole-genome sequencing or whole-exome sequencing. Electron microscopy studies of peripheral lymphocytes and CLN3 transcript analysis with polymerase chain reaction amplification were performed in a subset of patients. Results There were 7 females and 3 males in this case series, with a mean (range) age at last review of 37.1 (16-70) years. Of the 10 patients, 4 had a progressive late-onset rod-cone dystrophy, with a mean (range) age at onset of 29.7 (20-40) years, and 6 had an earlier onset rod-cone dystrophy, with a mean (range) age at onset of 12.1 (7-17) years. Ophthalmoscopic examination features included macular edema, mild intraretinal pigment migration, and widespread atrophy in advanced disease. Optical coherence tomography imaging demonstrated significant photoreceptor loss except in patients with late-onset disease who had a focal preservation of the ellipsoid zone and outer nuclear layer in the fovea. Electroretinography revealed a rod-cone pattern of dysfunction in 6 patients and were completely undetectable in 2 patients. Six novel CLN3 variants were identified in molecular analyses. Conclusions and Relevance This report describes detailed clinical, imaging, and genetic features of CLN3-associated nonsyndromic retinal degeneration. The age at onset and natural progression of retinal disease differs greatly between syndromic and nonsyndromic CLN3 disease, which may be associated with genotypic differences.
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Affiliation(s)
- Cristy A Ku
- Casey Eye Institute, Oregon Health & Science University, Portland
| | - Sarah Hull
- University College London Institute of Ophthalmology, London, England3Moorfields Eye Hospital, London, England
| | - Gavin Arno
- University College London Institute of Ophthalmology, London, England3Moorfields Eye Hospital, London, England
| | - Ajoy Vincent
- Department of Ophthalmology and Vision Sciences, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - Keren Carss
- National Health Service Blood and Transplant Centre, Department of Haematology, University of Cambridge, Cambridge, England6National Institute for Health Research BioResource: Rare Diseases, Cambridge University Hospitals, Cambridge Biomedical Campus, Cambridge, England
| | - Robert Kayton
- Pathology Department, Oregon Health & Science University, Portland
| | - Douglas Weeks
- Pathology Department, Oregon Health & Science University, Portland
| | - Glenn W Anderson
- Histopathology Department, Great Ormond Street Hospital for Children, London, England
| | - Ryan Geraets
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, South Dakota
| | - Camille Parker
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, South Dakota
| | - David A Pearce
- Sanford Children's Health Research Center, Sanford Research, Sioux Falls, South Dakota10Department of Pediatrics, Sanford School of Medicine, University of South Dakota, Sioux Falls
| | - Michel Michaelides
- University College London Institute of Ophthalmology, London, England3Moorfields Eye Hospital, London, England
| | - Robert E MacLaren
- Moorfields Eye Hospital, London, England11Nuffield Laboratory of Ophthalmology, Department of Clinical Neurosciences, University of Oxford, Oxford, England12Oxford University Hospitals National Health Service Foundation Trust, Oxford, England
| | - Anthony G Robson
- University College London Institute of Ophthalmology, London, England3Moorfields Eye Hospital, London, England
| | - Graham E Holder
- University College London Institute of Ophthalmology, London, England3Moorfields Eye Hospital, London, England
| | - Elise Heon
- Department of Ophthalmology and Vision Sciences, Hospital for Sick Children, University of Toronto, Toronto, Ontario, Canada
| | - F Lucy Raymond
- National Health Service Blood and Transplant Centre, Department of Haematology, University of Cambridge, Cambridge, England6National Institute for Health Research BioResource: Rare Diseases, Cambridge University Hospitals, Cambridge Biomedical Campus, Cambridge, England13Cambridge Institute for Medical Research, Department of Medical Genetics, University of Cambridge, Cambridge, England
| | - Anthony T Moore
- University College London Institute of Ophthalmology, London, England3Moorfields Eye Hospital, London, England14Department of Ophthalmology, University of California, San Francisco Medical School, San Francisco
| | - Andrew R Webster
- University College London Institute of Ophthalmology, London, England3Moorfields Eye Hospital, London, England
| | - Mark E Pennesi
- Casey Eye Institute, Oregon Health & Science University, Portland
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84
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Primary fibroblasts from CSPα mutation carriers recapitulate hallmarks of the adult onset neuronal ceroid lipofuscinosis. Sci Rep 2017; 7:6332. [PMID: 28740222 PMCID: PMC5524943 DOI: 10.1038/s41598-017-06710-1] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Accepted: 06/15/2017] [Indexed: 01/14/2023] Open
Abstract
Mutations in the co- chaperone protein, CSPα, cause an autosomal dominant, adult-neuronal ceroid lipofuscinosis (AD-ANCL). The current understanding of CSPα function exclusively at the synapse fails to explain the autophagy-lysosome pathway (ALP) dysfunction in cells from AD-ANCL patients. Here, we demonstrate unexpectedly that primary dermal fibroblasts from pre-symptomatic mutation carriers recapitulate in vitro features found in the brains of AD-ANCL patients including auto-fluorescent storage material (AFSM) accumulation, CSPα aggregates, increased levels of lysosomal proteins and lysosome enzyme activities. AFSM accumulation correlates with CSPα aggregation and both are susceptible to pharmacological modulation of ALP function. In addition, we demonstrate that endogenous CSPα is present in the lysosome-enriched fractions and co-localizes with lysosome markers in soma, neurites and synaptic boutons. Overexpression of CSPα wild-type (WT) decreases lysotracker signal, secreted lysosomal enzymes and SNAP23-mediated lysosome exocytosis. CSPα WT, mutant and aggregated CSPα are degraded mainly by the ALP but this disease-causing mutation exhibits a faster rate of degradation. Co-expression of both WT and mutant CSPα cause a block in the fusion of autophagosomes/lysosomes. Our data suggest that aggregation-dependent perturbation of ALP function is a relevant pathogenic mechanism for AD-ANCL and supports the use of AFSM or CSPα aggregation as biomarkers for drug screening purposes.
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85
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Oliver KL, Franceschetti S, Milligan CJ, Muona M, Mandelstam SA, Canafoglia L, Boguszewska-Chachulska AM, Korczyn AD, Bisulli F, Di Bonaventura C, Ragona F, Michelucci R, Ben-Zeev B, Straussberg R, Panzica F, Massano J, Friedman D, Crespel A, Engelsen BA, Andermann F, Andermann E, Spodar K, Lasek-Bal A, Riguzzi P, Pasini E, Tinuper P, Licchetta L, Gardella E, Lindenau M, Wulf A, Møller RS, Benninger F, Afawi Z, Rubboli G, Reid CA, Maljevic S, Lerche H, Lehesjoki AE, Petrou S, Berkovic SF. Myoclonus epilepsy and ataxia due to KCNC1 mutation: Analysis of 20 cases and K + channel properties. Ann Neurol 2017; 81:677-689. [PMID: 28380698 DOI: 10.1002/ana.24929] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2016] [Revised: 03/31/2017] [Accepted: 03/31/2017] [Indexed: 12/24/2022]
Abstract
OBJECTIVE To comprehensively describe the new syndrome of myoclonus epilepsy and ataxia due to potassium channel mutation (MEAK), including cellular electrophysiological characterization of observed clinical improvement with fever. METHODS We analyzed clinical, electroclinical, and neuroimaging data for 20 patients with MEAK due to recurrent KCNC1 p.R320H mutation. In vitro electrophysiological studies were conducted using whole cell patch-clamp to explore biophysical properties of wild-type and mutant KV 3.1 channels. RESULTS Symptoms began at between 3 and 15 years of age (median = 9.5), with progressively severe myoclonus and rare tonic-clonic seizures. Ataxia was present early, but quickly became overshadowed by myoclonus; 10 patients were wheelchair-bound by their late teenage years. Mild cognitive decline occurred in half. Early death was not observed. Electroencephalogram (EEG) showed generalized spike and polyspike wave discharges, with documented photosensitivity in most. Polygraphic EEG-electromyographic studies demonstrated a cortical origin for myoclonus and striking coactivation of agonist and antagonist muscles. Magnetic resonance imaging revealed symmetrical cerebellar atrophy, which appeared progressive, and a prominent corpus callosum. Unexpectedly, transient clinical improvement with fever was noted in 6 patients. To explore this, we performed high-temperature in vitro recordings. At elevated temperatures, there was a robust leftward shift in activation of wild-type KV 3.1, increasing channel availability. INTERPRETATION MEAK has a relatively homogeneous presentation, resembling Unverricht-Lundborg disease, despite the genetic and biological basis being quite different. A remarkable improvement with fever may be explained by the temperature-dependent leftward shift in activation of wild-type KV 3.1 subunit-containing channels, which would counter the loss of function observed for mutant channels, highlighting KCNC1 as a potential target for precision therapeutics. Ann Neurol 2017;81:677-689.
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Affiliation(s)
- Karen L Oliver
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia
| | - Silvana Franceschetti
- Department of Neurophysiology, C. Besta Neurological Institute IRCCS Foundation, Milan, Italy
| | - Carol J Milligan
- Ion Channels and Disease Group, Epilepsy Division, Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia
| | - Mikko Muona
- Institute for Molecular Medicine Finland, University of Helsinki, Helsinki, Finland.,Folkhälsan Institute of Genetics, Helsinki, Finland.,Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.,Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Simone A Mandelstam
- Florey Institute of Neuroscience and Mental Health, Melbourne, Victoria, Australia.,Departments of Paediatrics and Radiology, University of Melbourne, Melbourne, Victoria, Australia.,Department of Medical Imaging, Royal Children's Hospital, Melbourne, Victoria, Australia
| | - Laura Canafoglia
- Department of Neurophysiology, C. Besta Neurological Institute IRCCS Foundation, Milan, Italy
| | | | - Amos D Korczyn
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Francesca Bisulli
- IRCCS-Institute of Neurological Sciences of Bologna, Bologna, Italy.,Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Carlo Di Bonaventura
- Department of Neurological Sciences, University of Rome, La Sapienza, Rome, Italy
| | - Francesca Ragona
- Department of Pediatric Neuroscience, C. Besta Neurological Institute IRCCS Foundation, Milan, Italy
| | - Roberto Michelucci
- IRCCS-Institute of Neurological Sciences of Bologna, Bologna, Italy.,Unit of Neurology, Bellaria Hospital, Bologna, Italy
| | - Bruria Ben-Zeev
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Edmond and Lily Safra Children's Hospital, Sheba Medical Center, Ramat Gan, Israel
| | - Rachel Straussberg
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.,Epilepsy Unit, Schneider Children's Medical Center of Israel, Petah Tikvah, Israel
| | - Ferruccio Panzica
- Department of Neurophysiology, C. Besta Neurological Institute IRCCS Foundation, Milan, Italy
| | - João Massano
- Department of Neurology, Hospital Pedro Hispano/ULS Matosinhos, Senhora da Hora, Portugal.,Department of Clinical Neurosciences and Mental Health, Faculty of Medicine, University of Porto, Porto, Portugal
| | - Daniel Friedman
- Comprehensive Epilepsy Center, New York University Langone Medical Center, New York, NY
| | - Arielle Crespel
- Epilepsy Unit, Gui de Chauliac Hospital, Montpellier, France
| | - Bernt A Engelsen
- Department of Clinical Medicine, University of Bergen, Bergen, Norway
| | - Frederick Andermann
- Epilepsy Research Group, Montreal Neurological Hospital and Institute, Montreal, Quebec, Canada.,Departments of Neurology & Neurosurgery and Paediatrics, McGill University, Montreal, Quebec, Canada
| | - Eva Andermann
- Neurogenetics Unit and Epilepsy Research Group, Montreal Neurological Hospital and Institute, Montreal, Quebec, Canada.,Departments of Neurology & Neurosurgery and Human Genetics, McGill University, Montreal, Quebec, Canada
| | | | - Anetta Lasek-Bal
- High School of Science, Medical University of Silesia, Department of Neurology, Upper Silesian Medical Center, Katowice, Poland
| | - Patrizia Riguzzi
- IRCCS-Institute of Neurological Sciences of Bologna, Bologna, Italy.,Unit of Neurology, Bellaria Hospital, Bologna, Italy
| | - Elena Pasini
- IRCCS-Institute of Neurological Sciences of Bologna, Bologna, Italy.,Unit of Neurology, Bellaria Hospital, Bologna, Italy
| | - Paolo Tinuper
- IRCCS-Institute of Neurological Sciences of Bologna, Bologna, Italy.,Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Laura Licchetta
- IRCCS-Institute of Neurological Sciences of Bologna, Bologna, Italy.,Department of Biomedical and Neuromotor Sciences, University of Bologna, Bologna, Italy
| | - Elena Gardella
- Danish Epilepsy Center, Dianalund, Denmark.,Institute for Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Matthias Lindenau
- Department of Neurology and Epileptology, Epilepsy Center Hamburg-Alsterdorf, Hamburg, Germany
| | - Annette Wulf
- Department of Neurology and Epileptology, Epilepsy Center Hamburg-Alsterdorf, Hamburg, Germany
| | - Rikke S Møller
- Danish Epilepsy Center, Dianalund, Denmark.,Institute for Regional Health Research, University of Southern Denmark, Odense, Denmark
| | - Felix Benninger
- Department of Neurology, Rabin Medical Center, Beilinson Hospital, Petah Tikvah, Israel
| | - Zaid Afawi
- Sackler Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Guido Rubboli
- IRCCS-Institute of Neurological Sciences of Bologna, Bologna, Italy.,Danish Epilepsy Center, Filadelfia/University of Copenhagen, Dianalund, Denmark
| | - Christopher A Reid
- Ion Channels and Disease Group, Epilepsy Division, Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia
| | - Snezana Maljevic
- Ion Channels and Disease Group, Epilepsy Division, Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia.,University of Tübingen, Department of Neurology and Epileptology, Hertie Institute for Clinical Brain Research, Tübingen, Germany
| | - Holger Lerche
- University of Tübingen, Department of Neurology and Epileptology, Hertie Institute for Clinical Brain Research, Tübingen, Germany
| | - Anna-Elina Lehesjoki
- Folkhälsan Institute of Genetics, Helsinki, Finland.,Research Programs Unit, Molecular Neurology, University of Helsinki, Helsinki, Finland.,Neuroscience Center, University of Helsinki, Helsinki, Finland
| | - Steven Petrou
- Ion Channels and Disease Group, Epilepsy Division, Florey Institute of Neuroscience and Mental Health, Parkville, Victoria, Australia.,Centre for Neural Engineering, Department of Electrical Engineering, University of Melbourne, Parkville, Victoria, Australia
| | - Samuel F Berkovic
- Epilepsy Research Centre, Department of Medicine, University of Melbourne, Austin Health, Heidelberg, Victoria, Australia
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86
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Li YC, Kavalali ET. Synaptic Vesicle-Recycling Machinery Components as Potential Therapeutic Targets. Pharmacol Rev 2017; 69:141-160. [PMID: 28265000 DOI: 10.1124/pr.116.013342] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Presynaptic nerve terminals are highly specialized vesicle-trafficking machines. Neurotransmitter release from these terminals is sustained by constant local recycling of synaptic vesicles independent from the neuronal cell body. This independence places significant constraints on maintenance of synaptic protein complexes and scaffolds. Key events during the synaptic vesicle cycle-such as exocytosis and endocytosis-require formation and disassembly of protein complexes. This extremely dynamic environment poses unique challenges for proteostasis at synaptic terminals. Therefore, it is not surprising that subtle alterations in synaptic vesicle cycle-associated proteins directly or indirectly contribute to pathophysiology seen in several neurologic and psychiatric diseases. In contrast to the increasing number of examples in which presynaptic dysfunction causes neurologic symptoms or cognitive deficits associated with multiple brain disorders, synaptic vesicle-recycling machinery remains an underexplored drug target. In addition, irrespective of the involvement of presynaptic function in the disease process, presynaptic machinery may also prove to be a viable therapeutic target because subtle alterations in the neurotransmitter release may counter disease mechanisms, correct, or compensate for synaptic communication deficits without the need to interfere with postsynaptic receptor signaling. In this article, we will overview critical properties of presynaptic release machinery to help elucidate novel presynaptic avenues for the development of therapeutic strategies against neurologic and neuropsychiatric disorders.
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Affiliation(s)
- Ying C Li
- Departments of Neuroscience (Y.C.L., E.T.K.) and Physiology (E.T.K.), University of Texas Southwestern Medical Center, Dallas, Texas
| | - Ege T Kavalali
- Departments of Neuroscience (Y.C.L., E.T.K.) and Physiology (E.T.K.), University of Texas Southwestern Medical Center, Dallas, Texas
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87
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Gorenberg EL, Chandra SS. The Role of Co-chaperones in Synaptic Proteostasis and Neurodegenerative Disease. Front Neurosci 2017; 11:248. [PMID: 28579939 PMCID: PMC5437171 DOI: 10.3389/fnins.2017.00248] [Citation(s) in RCA: 83] [Impact Index Per Article: 11.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2017] [Accepted: 04/18/2017] [Indexed: 12/14/2022] Open
Abstract
Synapses must be preserved throughout an organism's lifespan to allow for normal brain function and behavior. Synapse maintenance is challenging given the long distances between the termini and the cell body, reliance on axonal transport for delivery of newly synthesized presynaptic proteins, and high rates of synaptic vesicle exo- and endocytosis. Hence, synapses rely on efficient proteostasis mechanisms to preserve their structure and function. To this end, the synaptic compartment has specific chaperones to support its functions. Without proper synaptic chaperone activity, local proteostasis imbalances lead to neurotransmission deficits, dismantling of synapses, and neurodegeneration. In this review, we address the roles of four synaptic chaperones in the maintenance of the nerve terminal, as well as their genetic links to neurodegenerative disease. Three of these are Hsp40 co-chaperones (DNAJs): Cysteine String Protein alpha (CSPα; DNAJC5), auxilin (DNAJC6), and Receptor-Mediated Endocytosis 8 (RME-8; DNAJC13). These co-chaperones contain a conserved J domain through which they form a complex with heat shock cognate 70 (Hsc70), enhancing the chaperone's ATPase activity. CSPα is a synaptic vesicle protein known to chaperone the t-SNARE SNAP-25 and the endocytic GTPase dynamin-1, thereby regulating synaptic vesicle exocytosis and endocytosis. Auxilin binds assembled clathrin cages, and through its interactions with Hsc70 leads to the uncoating of clathrin-coated vesicles, a process necessary for the regeneration of synaptic vesicles. RME-8 is a co-chaperone on endosomes and may have a role in clathrin-coated vesicle endocytosis on this organelle. These three co-chaperones maintain client function by preserving folding and assembly to prevent client aggregation, but they do not break down aggregates that have already formed. The fourth synaptic chaperone we will discuss is Heat shock protein 110 (Hsp110), which interacts with Hsc70, DNAJAs, and DNAJBs to constitute a disaggregase. Hsp110-related disaggregase activity is present at the synapse and is known to protect against aggregation of proteins such as α-synuclein. Congruent with their importance in the nervous system, mutations of these co-chaperones lead to familial neurodegenerative disease. CSPα mutations cause adult neuronal ceroid lipofuscinosis, while auxilin mutations result in early-onset Parkinson's disease, demonstrating their significance in preservation of the nervous system.
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Affiliation(s)
- Erica L Gorenberg
- Interdepartmental Neuroscience Program, Yale UniversityNew Haven, CT, United States
| | - Sreeganga S Chandra
- Department of Neurology, Yale UniversityNew Haven, CT, United States.,Department of Neuroscience, Yale UniversityNew Haven, CT, United States
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88
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Magrinelli F, Pezzini F, Moro F, Santorelli FM, Simonati A. Diagnostic methods and emerging treatments for adult neuronal ceroid lipofuscinoses (Kufs disease). Expert Opin Orphan Drugs 2017. [DOI: 10.1080/21678707.2017.1325359] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Affiliation(s)
- Francesca Magrinelli
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Francesco Pezzini
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
| | - Francesca Moro
- Molecular Medicine and Neurogenetics Unit, IRCCS Stella Maris, Pisa, Italy
| | | | - Alessandro Simonati
- Department of Neurosciences, Biomedicine and Movement Sciences, University of Verona, Verona, Italy
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89
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Yao X, Liu X, Zhang Y, Li Y, Zhao C, Yao S, Wei Y. Gene Therapy of Adult Neuronal Ceroid Lipofuscinoses with CRISPR/Cas9 in Zebrafish. Hum Gene Ther 2017; 28:588-597. [PMID: 28478735 DOI: 10.1089/hum.2016.190] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
Adult-onset neuronal ceroid lipofuscinosis (ANCL), one of the neuronal ceroid lipofuscinosis (NCLs), is an inherited neurodegenerative disorder with progressive neuronal dysfunction. Recently, mutations in the DNAJC5 gene that encodes cysteine-string protein alpha (CSPα) have been reported to be associated with familial autosomal-dominant ANCL (AD-ANCL). This study constructed an ANCL transgenic zebrafish model expressing the human mutant DNAJC5 (mDNAJC5) gene under the control of a zebrafish neuron-specific promoter. To investigate whether gene therapy based on genome-editing technology could treat ANCL, a panel of TALEN and Cas9 nucleases was designed to disrupt the mDNAJC5 gene in this transgenic animal model. By screening these nucleases, it was found that one nuclease that targeted the 5' coding region efficiently alleviated mDNAJC5 protein aggregates in the affected neurons. Therefore, this study provides a gene therapy strategy via the use of the CRISPR/Cas9 system to treat neural genetic diseases.
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Affiliation(s)
- Xiaomin Yao
- 1 State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Xiaowei Liu
- 1 State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Yaguang Zhang
- 1 State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Yuhao Li
- 2 Key Laboratory of Tumor Microenvironment and Neurovascular Regulation, Nankai University School of Medicine , Tianjin, People's Republic of China
| | - Chenjian Zhao
- 1 State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Shaohua Yao
- 1 State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, People's Republic of China
| | - Yuquan Wei
- 1 State Key Laboratory of Biotherapy/Collaborative Innovation Center of Biotherapy, West China Hospital, Sichuan University, Chengdu, People's Republic of China
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90
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Neurons Export Extracellular Vesicles Enriched in Cysteine String Protein and Misfolded Protein Cargo. Sci Rep 2017; 7:956. [PMID: 28424476 PMCID: PMC5430488 DOI: 10.1038/s41598-017-01115-6] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2016] [Accepted: 03/27/2017] [Indexed: 12/20/2022] Open
Abstract
The fidelity of synaptic transmission depends on the integrity of the protein machinery at the synapse. Unfolded synaptic proteins undergo refolding or degradation in order to maintain synaptic proteostasis and preserve synaptic function, and buildup of unfolded/toxic proteins leads to neuronal dysfunction. Many molecular chaperones contribute to proteostasis, but one in particular, cysteine string protein (CSPα), is critical for proteostasis at the synapse. In this study we report that exported vesicles from neurons contain CSPα. Extracellular vesicles (EV’s) have been implicated in a wide range of functions. However, the functional significance of neural EV’s remains to be established. Here we demonstrate that co-expression of CSPα with the disease-associated proteins, polyglutamine expanded protein 72Q huntingtinex°n1 or superoxide dismutase-1 (SOD-1G93A) leads to the cellular export of both 72Q huntingtinex°n1 and SOD-1G93A via EV’s. In contrast, the inactive CSPαHPD-AAA mutant does not facilitate elimination of misfolded proteins. Furthermore, CSPα-mediated export of 72Q huntingtinex°n1 is reduced by the polyphenol, resveratrol. Our results indicate that by assisting local lysosome/proteasome processes, CSPα-mediated removal of toxic proteins via EVs plays a central role in synaptic proteostasis and CSPα thus represents a potential therapeutic target for neurodegenerative diseases.
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91
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Lipstein N, Verhoeven-Duif NM, Michelassi FE, Calloway N, van Hasselt PM, Pienkowska K, van Haaften G, van Haelst MM, van Empelen R, Cuppen I, van Teeseling HC, Evelein AMV, Vorstman JA, Thoms S, Jahn O, Duran KJ, Monroe GR, Ryan TA, Taschenberger H, Dittman JS, Rhee JS, Visser G, Jans JJ, Brose N. Synaptic UNC13A protein variant causes increased neurotransmission and dyskinetic movement disorder. J Clin Invest 2017; 127:1005-1018. [PMID: 28192369 DOI: 10.1172/jci90259] [Citation(s) in RCA: 76] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2016] [Accepted: 12/15/2016] [Indexed: 12/13/2022] Open
Abstract
Munc13 proteins are essential regulators of neurotransmitter release at nerve cell synapses. They mediate the priming step that renders synaptic vesicles fusion-competent, and their genetic elimination causes a complete block of synaptic transmission. Here we have described a patient displaying a disorder characterized by a dyskinetic movement disorder, developmental delay, and autism. Using whole-exome sequencing, we have shown that this condition is associated with a rare, de novo Pro814Leu variant in the major human Munc13 paralog UNC13A (also known as Munc13-1). Electrophysiological studies in murine neuronal cultures and functional analyses in Caenorhabditis elegans revealed that the UNC13A variant causes a distinct dominant gain of function that is characterized by increased fusion propensity of synaptic vesicles, which leads to increased initial synaptic vesicle release probability and abnormal short-term synaptic plasticity. Our study underscores the critical importance of fine-tuned presynaptic control in normal brain function. Further, it adds the neuronal Munc13 proteins and the synaptic vesicle priming process that they control to the known etiological mechanisms of psychiatric and neurological synaptopathies.
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92
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Lopez-Ortega E, Ruiz R, Tabares L. CSPα, a Molecular Co-chaperone Essential for Short and Long-Term Synaptic Maintenance. Front Neurosci 2017; 11:39. [PMID: 28239331 PMCID: PMC5301022 DOI: 10.3389/fnins.2017.00039] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2016] [Accepted: 01/19/2017] [Indexed: 01/26/2023] Open
Abstract
Cysteine string protein α (CSPα) is a vesicle protein located in the presynaptic terminal of most synapses. CSPα is an essential molecular co-chaperone that facilitates the correct folding of proteins and the assembly of the exocytic machinery. The absence of this protein leads to altered neurotransmitter release and neurodegeneration in multiple model systems, from flies to mice. In humans, CSPα mutations are associated with the development of neuronal ceroid lipofuscinosis (NCL), a neurodegenerative disease characterized by intracellular accumulation of lysosomal material. Here, we review the physiological role of CSPα and the pathology resulting from the homozygous deletion of the gene or its mutations. In addition, we investigate whether long-term moderate reduction of the protein produces motor dysfunction. We found that 1-year-old CSPα heterozygous mice display a reduced ability to sustain motor unit recruitment during repetitive stimulation, which indicates that physiological levels of CSPα are required for normal neuromuscular responses in mice and, likely, in humans.
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Affiliation(s)
- Elena Lopez-Ortega
- Department of Medical Physiology and Biophysics, School of Medicine, University of Seville Seville, Spain
| | - Rocío Ruiz
- Department of Biochemistry and Molecular Biology, School of Pharmacy, University of Seville Seville, Spain
| | - Lucia Tabares
- Department of Medical Physiology and Biophysics, School of Medicine, University of Seville Seville, Spain
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93
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Diez-Ardanuy C, Greaves J, Munro KR, Tomkinson NCO, Chamberlain LH. A cluster of palmitoylated cysteines are essential for aggregation of cysteine-string protein mutants that cause neuronal ceroid lipofuscinosis. Sci Rep 2017; 7:10. [PMID: 28127059 PMCID: PMC5428344 DOI: 10.1038/s41598-017-00036-8] [Citation(s) in RCA: 75] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Accepted: 12/19/2016] [Indexed: 01/18/2023] Open
Abstract
Autosomal-dominant adult-onset neuronal ceroid lipofuscinosis (ANCL) is caused by mutation of the DNAJC5 gene encoding cysteine string protein alpha (CSPα). The disease-causing mutations, which result in substitution of leucine-115 with an arginine (L115R) or deletion of the neighbouring leucine-116 (∆L116) in the cysteine-string domain cause CSPα to form high molecular weight SDS-resistant aggregates, which are also present in post-mortem brain tissue from patients. Formation and stability of these mutant aggregates is linked to palmitoylation of the cysteine-string domain, however the regions of the mutant proteins that drive aggregation have not been determined. The importance of specific residues in the cysteine-string domain was investigated, revealing that a central core of palmitoylated cysteines is essential for aggregation of ANCL CSPα mutants. Interestingly, palmitoylated monomers of ANCL CSPα mutants were shown to be short-lived compared with wild-type CSPα, suggesting that the mutants either have a faster rate of depalmitoylation or that they are consumed in a time-dependent manner into high molecular weight aggregates. These findings provide new insight into the features of CSPα that promote aggregation in the presence of L115R/∆L116 mutations and reveal a change in the lifetime of palmitoylated monomers of the mutant proteins.
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Affiliation(s)
- Cinta Diez-Ardanuy
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Jennifer Greaves
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK
| | - Kevin R Munro
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Nicholas C O Tomkinson
- WestCHEM, Department of Pure and Applied Chemistry, University of Strathclyde, 295 Cathedral Street, Glasgow, G1 1XL, UK
| | - Luke H Chamberlain
- Strathclyde Institute of Pharmacy & Biomedical Sciences, University of Strathclyde, 161 Cathedral Street, Glasgow, G4 0RE, UK.
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94
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Huber RJ. Using the social amoeba Dictyostelium to study the functions of proteins linked to neuronal ceroid lipofuscinosis. J Biomed Sci 2016; 23:83. [PMID: 27881166 PMCID: PMC5122030 DOI: 10.1186/s12929-016-0301-0] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2016] [Accepted: 11/15/2016] [Indexed: 12/12/2022] Open
Abstract
Neuronal ceroid lipofuscinosis (NCL), also known as Batten disease, is a debilitating neurological disorder that affects both children and adults. Thirteen genetically distinct genes have been identified that when mutated, result in abnormal lysosomal function and an excessive accumulation of ceroid lipofuscin in neurons, as well as other cell types outside of the central nervous system. The NCL family of proteins is comprised of lysosomal enzymes (PPT1/CLN1, TPP1/CLN2, CTSD/CLN10, CTSF/CLN13), proteins that peripherally associate with membranes (DNAJC5/CLN4, KCTD7/CLN14), a soluble lysosomal protein (CLN5), a protein present in the secretory pathway (PGRN/CLN11), and several proteins that display different subcellular localizations (CLN3, CLN6, MFSD8/CLN7, CLN8, ATP13A2/CLN12). Unfortunately, the precise functions of many of the NCL proteins are still unclear, which has made targeted therapy development challenging. The social amoeba Dictyostelium discoideum has emerged as an excellent model system for studying the normal functions of proteins linked to human neurological disorders. Intriguingly, the genome of this eukaryotic soil microbe encodes homologs of 11 of the 13 known genes linked to NCL. The genetic tractability of the organism, combined with its unique life cycle, makes Dictyostelium an attractive model system for studying the functions of NCL proteins. Moreover, the ability of human NCL proteins to rescue gene-deficiency phenotypes in Dictyostelium suggests that the biological pathways regulating NCL protein function are likely conserved from Dictyostelium to human. In this review, I will discuss each of the NCL homologs in Dictyostelium in turn and describe how future studies can exploit the advantages of the system by testing new hypotheses that may ultimately lead to effective therapy options for this devastating and currently untreatable neurological disorder.
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Affiliation(s)
- Robert J Huber
- Department of Biology, Trent University, 2140 East Bank Drive, Peterborough, ON, K9J 7B8, Canada.
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95
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Yuan L, Song Z, Deng X, Zheng W, Guo Y, Yang Z, Deng H. Systematic analysis of genetic variants in Han Chinese patients with sporadic Parkinson's disease. Sci Rep 2016; 6:33850. [PMID: 27653456 PMCID: PMC5032117 DOI: 10.1038/srep33850] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2016] [Accepted: 09/05/2016] [Indexed: 01/21/2023] Open
Abstract
Parkinson's disease (PD) is one of the most common neurodegenerative disorders. Accumulated evidence confirms that genetic factors play a considerable role in PD pathogenesis. To examine whether point variants or haplotypes are associated with PD development, genotyping of 35 variants in 22 PD-related genes was performed in a well-characterized cohort of 512 Han Chinese PD patients and 512 normal controls. Both Pearson's χ2 test and haplotype analysis were used to evaluate whether variants or their haplotypes were associated with PD in this cohort. The only statistically significant differences in genotypic and allelic frequencies between the patients and the controls were in the DnaJ heat shock protein family (Hsp40) member C10 gene (DNAJC10) variant rs13414223 (P = 0.004 and 0.002, respectively; odds ratio = 0.652, 95% confidence interval: 0.496-0.857). No other variants or haplotypes exhibited any significant differences between these two groups (all corrected P > 0.05). Our findings indicate that the variant rs13414223 in the DNAJC10 gene, a paralog of PD-related genes DNAJC6 and DNAJC13, may play a protective role in PD. This suggests it may be a PD-associated gene.
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Affiliation(s)
- Lamei Yuan
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Zhi Song
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Xiong Deng
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Wen Zheng
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Yi Guo
- Department of Medical Information, Information Security and Big Data Research Institute, Central South University, Changsha, China
| | - Zhijian Yang
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
| | - Hao Deng
- Center for Experimental Medicine, the Third Xiangya Hospital, Central South University, Changsha, China
- Department of Neurology, the Third Xiangya Hospital, Central South University, Changsha, China
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96
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van der Zee J, Mariën P, Crols R, Van Mossevelde S, Dillen L, Perrone F, Engelborghs S, Verhoeven J, D'aes T, Ceuterick-De Groote C, Sieben A, Versijpt J, Cras P, Martin JJ, Van Broeckhoven C. Mutated CTSF in adult-onset neuronal ceroid lipofuscinosis and FTD. NEUROLOGY-GENETICS 2016; 2:e102. [PMID: 27668283 PMCID: PMC5027801 DOI: 10.1212/nxg.0000000000000102] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2016] [Accepted: 08/08/2016] [Indexed: 11/15/2022]
Abstract
OBJECTIVE To investigate the molecular basis of a Belgian family with autosomal recessive adult-onset neuronal ceroid lipofuscinosis (ANCL or Kufs disease [KD]) with pronounced frontal lobe involvement and to expand the findings to a cohort of unrelated Belgian patients with frontotemporal dementia (FTD). METHODS Genetic screening in the ANCL family and FTD cohort (n = 461) was performed using exome sequencing and targeted massive parallel resequencing. RESULTS We identified a homozygous mutation (p.Ile404Thr) in the Cathepsin F (CTSF) gene cosegregating in the ANCL family. No other mutations were found that could explain the disease in this family. All 4 affected sibs developed motor symptoms and early-onset dementia with prominent frontal features. Two of them evolved to akinetic mutism. Disease presentation showed marked phenotypic variation with the onset ranging from 26 to 50 years. Myoclonic epilepsy in one of the sibs was suggestive for KD type A, while epilepsy was not present in the other sibs who presented with clinical features of KD type B. In a Belgian cohort of unrelated patients with FTD, the same heterozygous p.Arg245His mutation was identified in 2 patients who shared a common haplotype. CONCLUSIONS A homozygous CTSF mutation was identified in a recessive ANCL pedigree. In contrast to the previous associations of CTSF with KD type B, our findings suggest that CTSF genetic testing should also be considered in patients with KD type A as well as in early-onset dementia with prominent frontal lobe and motor symptoms.
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Affiliation(s)
- Julie van der Zee
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Peter Mariën
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Roeland Crols
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Sara Van Mossevelde
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Lubina Dillen
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Federica Perrone
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Sebastiaan Engelborghs
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Jo Verhoeven
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Tine D'aes
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Chantal Ceuterick-De Groote
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Anne Sieben
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Jan Versijpt
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Patrick Cras
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Jean-Jacques Martin
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
| | - Christine Van Broeckhoven
- Neurodegenerative Brain Diseases Group (J.v.d.Z., S.V.M., L.D., F.P., A.S., C.V.B.), Department of Molecular Genetics, VIB, Antwerp; Institute Born-Bunge (J.v.d.Z., S.V.M., L.D., F.P., S.E., C.C.-D.G., A.S., P.C., J.-J.M., C.V.B.), CLIPS, Computational Linguistics and Psycholinguistics (J. Verhoeven), University of Antwerp; Department of Neurology and Memory Clinic (P.M., R.C., S.V.M., S.E.), ZNA Middelheim and Hoge Beuken, Antwerp; Clinical and Experimental Neurolinguistics (P.M., T.D.), Vrije Universiteit Brussel, Belgium; Department of Language and Communication Science (J. Verhoeven), City University, London, UK; Department of Neurology (A.S.), University Hospital Ghent and University of Ghent; Department of Neurology (S.V.M., P.C.), Antwerp University Hospital; and Department of Neurology (J. Versijpt), University Hospital Brussels, Belgium
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97
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Lavado-Roldán A, Fernández-Chacón R. Two for the Price of One: A Neuroprotective Chaperone Kit within NAD Synthase Protein NMNAT2. PLoS Biol 2016; 14:e1002522. [PMID: 27454736 PMCID: PMC4959692 DOI: 10.1371/journal.pbio.1002522] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022] Open
Abstract
One of the most fascinating properties of the brain is the ability to function smoothly across decades of a lifespan. Neurons are nondividing mature cells specialized in fast electrical and chemical communication at synapses. Often, neurons and synapses operate at high levels of activity through sophisticated arborizations of long axons and dendrites that nevertheless stay healthy throughout years. On the other hand, aging and activity-dependent stress strike onto the protein machineries turning proteins unfolded and prone to form pathological aggregates associated with neurodegeneration. How do neurons protect from those insults and remain healthy for their whole life? Ali and colleagues now present a molecular mechanism by which the enzyme nicotinamide mononucleotide adenylyltransferase 2 (NMNAT2) acts not only as a NAD synthase involved in axonal maintenance but as a molecular chaperone helping neurons to overcome protein unfolding and protein aggregation. This Primer examines recent research showing that a brain enzyme known to ameliorate excitoxicity and axonal degeneration also acts as a molecular chaperone to prevent protein aggregation.
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Affiliation(s)
- Angela Lavado-Roldán
- Instituto de Biomedicina de Sevilla (IBiS) HUVR/CSIC/Universidad de Sevilla, Departamento de Fisiología Médica y Biofísica and CIBERNED, Seville, Spain
| | - Rafael Fernández-Chacón
- Instituto de Biomedicina de Sevilla (IBiS) HUVR/CSIC/Universidad de Sevilla, Departamento de Fisiología Médica y Biofísica and CIBERNED, Seville, Spain
- * E-mail:
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98
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Patel P, Prescott GR, Burgoyne RD, Lian LY, Morgan A. Phosphorylation of Cysteine String Protein Triggers a Major Conformational Switch. Structure 2016; 24:1380-1386. [PMID: 27452402 PMCID: PMC4975591 DOI: 10.1016/j.str.2016.06.009] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2016] [Revised: 05/17/2016] [Accepted: 06/02/2016] [Indexed: 12/11/2022]
Abstract
Cysteine string protein (CSP) is a member of the DnaJ/Hsp40 chaperone family that localizes to neuronal synaptic vesicles. Impaired CSP function leads to neurodegeneration in humans and model organisms as a result of misfolding of client proteins involved in neurotransmission. Mammalian CSP is phosphorylated in vivo on Ser10, and this modulates its protein interactions and effects on neurotransmitter release. However, there are no data on the structural consequences of CSP phosphorylation to explain these functional effects. We show that Ser10 phosphorylation causes an order-to-disorder transition that disrupts CSP's extreme N-terminal α helix. This triggers the concomitant formation of a hairpin loop stabilized by ionic interactions between phosphoSer10 and the highly conserved J-domain residue, Lys58. These phosphorylation-induced effects result in significant changes to CSP conformation and surface charge distribution. The phospho-switch revealed here provides structural insight into how Ser10 phosphorylation modulates CSP function and also has potential implications for other DnaJ phosphoproteins. First structure of a phosphorylated DnaJ/Hsp40 protein Phosphorylation destabilizes CSP's N-terminal α helix Newly disordered, phosphorylated N-terminal loop binds to the J domain Phosphorylation causes significant changes to CSP conformation and surface charge
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Affiliation(s)
- Pryank Patel
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown Street, Liverpool L69 3BX, UK; NMR Centre for Structural Biology, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 3BX, UK; Department of Biological and Environmental Sciences, University of Hertfordshire, Hatfield AL10 9AB, UK
| | - Gerald R Prescott
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown Street, Liverpool L69 3BX, UK
| | - Robert D Burgoyne
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown Street, Liverpool L69 3BX, UK
| | - Lu-Yun Lian
- NMR Centre for Structural Biology, Institute of Integrative Biology, University of Liverpool, Crown Street, Liverpool L69 3BX, UK.
| | - Alan Morgan
- Department of Cellular and Molecular Physiology, Institute of Translational Medicine, University of Liverpool, Crown Street, Liverpool L69 3BX, UK.
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99
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Berkovic SF, Staropoli JF, Carpenter S, Oliver KL, Kmoch S, Anderson GW, Damiano JA, Hildebrand MS, Sims KB, Cotman SL, Bahlo M, Smith KR, Cadieux-Dion M, Cossette P, Jedličková I, Přistoupilová A, Mole SE. Diagnosis and misdiagnosis of adult neuronal ceroid lipofuscinosis (Kufs disease). Neurology 2016; 87:579-84. [PMID: 27412140 DOI: 10.1212/wnl.0000000000002943] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2015] [Accepted: 04/29/2016] [Indexed: 12/16/2022] Open
Abstract
OBJECTIVE To critically re-evaluate cases diagnosed as adult neuronal ceroid lipofuscinosis (ANCL) in order to aid clinicopathologic diagnosis as a route to further gene discovery. METHODS Through establishment of an international consortium we pooled 47 unsolved cases regarded by referring centers as ANCL. Clinical and neuropathologic experts within the Consortium established diagnostic criteria for ANCL based on the literature to assess each case. A panel of 3 neuropathologists independently reviewed source pathologic data. Cases were given a final clinicopathologic classification of definite ANCL, probable ANCL, possible ANCL, or not ANCL. RESULTS Of the 47 cases, only 16 fulfilled the Consortium's criteria of ANCL (5 definite, 2 probable, 9 possible). Definitive alternate diagnoses were made in 10, including Huntington disease, early-onset Alzheimer disease, Niemann-Pick disease, neuroserpinopathy, prion disease, and neurodegeneration with brain iron accumulation. Six cases had features suggesting an alternate diagnosis, but no specific condition was identified; in 15, the data were inadequate for classification. Misinterpretation of normal lipofuscin as abnormal storage material was the commonest cause of misdiagnosis. CONCLUSIONS Diagnosis of ANCL remains challenging; expert pathologic analysis and recent molecular genetic advances revealed misdiagnoses in >1/3 of cases. We now have a refined group of cases that will facilitate identification of new causative genes.
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Affiliation(s)
- Samuel F Berkovic
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK.
| | - John F Staropoli
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Stirling Carpenter
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Karen L Oliver
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Stanislav Kmoch
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Glenn W Anderson
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - John A Damiano
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Michael S Hildebrand
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Katherine B Sims
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Susan L Cotman
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Melanie Bahlo
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Katherine R Smith
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Maxime Cadieux-Dion
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Patrick Cossette
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Ivana Jedličková
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
| | - Anna Přistoupilová
- From the Epilepsy Research Centre, Department of Medicine (S.F.B., K.L.O., J.A.D., M.S.H.), University of Melbourne, Austin Health, Heidelberg, Australia; Biogen, Inc. (J.F.S.), Cambridge, MA; Department of Pathology (S.C.), Centro Hospitalar São João, Porto, Portugal; Institute of Inherited Metabolic Disorders (S.K., I.J., A.P.), First Faculty of Medicine, Charles University in Prague; General University Hospital in Prague (S.K.), Czech Republic; Great Ormond Street Hospital for Children NHS Foundation Trust (G.W.A.), London, UK; Center for Human Genetic Research and Department of Neurology (K.B.S., S.L.C.), Harvard Medical School, Massachusetts General Hospital, Boston; Population Health and Immunity Division (M.B., K.R.S.), The Walter and Eliza Hall Institute of Medical Research; Departments of Mathematics and Statistics and Medical Biology (M.B.), University of Melbourne, Australia; Centre de Recherche du Centre Hospitalier de l'Université de Montréal (M.C.-D., P.C.), University of Montreal, Canada; and MRC Laboratory for Cell Biology (S.E.M.), Department of Genetics, Evolution & Environment and UCL Institute of Child Health, University College London, UK
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Bras J, Djaldetti R, Alves AM, Mead S, Darwent L, Lleo A, Molinuevo JL, Blesa R, Singleton A, Hardy J, Clarimon J, Guerreiro R. Exome sequencing in a consanguineous family clinically diagnosed with early-onset Alzheimer's disease identifies a homozygous CTSF mutation. Neurobiol Aging 2016; 46:236.e1-6. [PMID: 27524508 DOI: 10.1016/j.neurobiolaging.2016.06.018] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2016] [Revised: 06/23/2016] [Accepted: 06/26/2016] [Indexed: 12/16/2022]
Abstract
We have previously reported the whole genome genotyping analysis of 2 consanguineous siblings clinically diagnosed with early onset Alzheimer's disease (AD). In this analysis, we identified several large regions of homozygosity shared between both affected siblings, which we suggested could be candidate loci for a recessive genetic lesion underlying the early onset AD in these cases. We have now performed exome sequencing in one of these siblings and identified the potential cause of disease: the CTSF c.1243G>A:p.Gly415Arg mutation in homozygosity. Biallelic mutations in this gene have been shown to cause Type B Kufs disease, an adult-onset neuronal ceroid lipofuscinosis with some cases resembling the impairment seen in AD.
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Affiliation(s)
- Jose Bras
- Department of Molecular Neuroscience, Institute of Neurology, University College London, London, UK; Department of Medical Sciences and Institute of Biomedicine - iBiMED, University of Aveiro, Aveiro, Portugal
| | - Ruth Djaldetti
- Department of Neurology, Rabin Medical Center, Beilinson Campus, and Felsenstein Research Center, Petah Tiqva, Israel; Sackler School of Medicine, Tel Aviv University, Tel Aviv, Israel
| | - Ana Margarida Alves
- Department of Molecular Neuroscience, Institute of Neurology, University College London, London, UK
| | - Simon Mead
- MRC Prion Unit, Department of Neurodegenerative Diseases, UCL Institute of Neurology, London, UK
| | - Lee Darwent
- Department of Molecular Neuroscience, Institute of Neurology, University College London, London, UK
| | - Alberto Lleo
- Memory Unit, Neurology Department and Sant Pau Biomedical Research Institute, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain; CIBERNED, Center for Networked Biomedical Research into Neurodegenerative Diseases, Madrid, Spain
| | - Jose Luis Molinuevo
- Alzheimer's Disease and Other Cognitive Disorders Unit, Department of Neurology, Institute of Neurosciences, Hospital Clínic i Universitari de Barcelona, IDIBAPS, Barcelona, Spain
| | - Rafael Blesa
- Memory Unit, Neurology Department and Sant Pau Biomedical Research Institute, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Andrew Singleton
- Laboratory of Neurogenetics, National Institute on Aging, National Institutes of Health, Bethesda, MD, USA
| | - John Hardy
- Department of Molecular Neuroscience, Institute of Neurology, University College London, London, UK
| | - Jordi Clarimon
- Memory Unit, Neurology Department and Sant Pau Biomedical Research Institute, Hospital de la Santa Creu i Sant Pau, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - Rita Guerreiro
- Department of Molecular Neuroscience, Institute of Neurology, University College London, London, UK; Department of Medical Sciences and Institute of Biomedicine - iBiMED, University of Aveiro, Aveiro, Portugal.
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