Journal ArticleDOI
TARDBP and FUS mutations associated with amyotrophic lateral sclerosis: summary and update.
TLDR
The biological and clinical relevance of TARDBP and FUS mutations in ALS is summarized and functional characterization of these mutations in in vitro and in vivo systems is helping to better understand how motor neuron degeneration occurs.Abstract:
Mutations in the TAR DNA Binding Protein gene (TARDBP), encoding the protein TDP-43, were identified in amyotrophic lateral sclerosis (ALS) patients. Interestingly, TDP-43 positive inclusion bodies were first discovered in ubiquitin-positive, tau-negative ALS and frontotemporal dementia (FTD) inclusion bodies, and subsequently observed in the majority of neurodegenerative disorders. To date, 47 missense and one truncating mutations have been described in a large number of familial (FALS) and sporadic (SALS) patients. Fused in sarcoma (FUS) was found to be responsible for a previously identified ALS6 locus, being mutated in both FALS and SALS patients. TARDBP and FUS have a structural and functional similarity and most of mutations in both genes are also clustered in the C-terminus of the proteins. The molecular mechanisms through which mutant TDP-43 and FUS may cause motor neuron degeneration are not well understood. Both proteins play an important role in mRNA transport, axonal maintenance, and motor neuron development. Functional characterization of these mutations in in vitro and in vivo systems is helping to better understand how motor neuron degeneration occurs. This report summarizes the biological and clinical relevance of TARDBP and FUS mutations in ALS. All the data reviewed here have been submitted to a database based on the Leiden Open (source) Variation Database (LOVD) and is accessible online at www.lovd.nl/TARDBP, www.lovd.nl/FUS.read more
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Journal ArticleDOI
Converging mechanisms in ALS and FTD: disrupted RNA and protein homeostasis.
TL;DR: It is presented the case here that these two processes are intimately linked, with disease-initiated perturbation of either leading to further deviation of both protein and RNA homeostasis through a feedforward loop including cell-to-cell prion-like spread that may represent the mechanism for relentless disease progression.
Journal ArticleDOI
Molecular Mechanisms of TDP-43 Misfolding and Pathology in Amyotrophic Lateral Sclerosis.
TL;DR: The roles of TDP-43's mutations, its cytoplasmic mis-localization and aberrant post-translational modifications in ALS, its amyloid-like in vitro aggregation, its physiological vs. pathological oligomerization in vivo, liquid-liquid phase separation (LLPS), and potential prion-like propagation propensity of the TDP -43 inclusions are discussed.
Journal ArticleDOI
ALS Genetics, Mechanisms, and Therapeutics: Where Are We Now?
Rita Mejzini,Loren L. Flynn,Loren L. Flynn,Ianthe Pitout,Ianthe Pitout,Sue Fletcher,Sue Fletcher,Steve D. Wilton,Steve D. Wilton,P.A. Akkari,P.A. Akkari +10 more
TL;DR: The genetic basis of ALS is reviewed, highlighting factors that have contributed to the elusiveness of genetic heritability and future directions for research that may lead to effective treatment strategies outlined.
Journal ArticleDOI
Genetic epidemiology of amyotrophic lateral sclerosis: a systematic review and meta-analysis.
TL;DR: The findings demonstrated that the genetic architecture of ALS in Asian populations is distinct from that in European populations, which need to be given appropriate consideration when performing genetic testing of patients with ALS.
Journal ArticleDOI
RNA-binding proteins with prion-like domains in health and disease
TL;DR: The physiological and pathological roles of the most prominent RBPs with PrLDs are reviewed and the potential of protein disaggregases, including Hsp104, as a therapeutic strategy to combat the aberrant phase transitions of RBP with Pr LDs that likely underpin neurodegeneration are highlighted.
References
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Journal ArticleDOI
Mutations in Cu/Zn superoxide dismutase gene are associated with familial amyotrophic lateral sclerosis
TL;DR: Tight genetic linkage between FALS and a gene that encodes a cytosolic, Cu/Zn-binding superoxide dismutase (SOD1), a homodimeric metalloenzyme that catalyzes the dismutation of the toxic superoxide anion O–2 to O2 and H2O2 is reported.
Journal ArticleDOI
Ubiquitinated TDP-43 in frontotemporal lobar degeneration and amyotrophic lateral sclerosis
Manuela Neumann,Deepak M. Sampathu,Linda K. Kwong,Adam C. Truax,Matthew Micsenyi,Thomas T. Chou,Jennifer Bruce,Theresa Schuck,Murray Grossman,Christopher M. Clark,Leo McCluskey,Bruce L. Miller,Eliezer Masliah,Ian R. A. Mackenzie,Howard Feldman,Wolfgang Feiden,Hans A. Kretzschmar,John Q. Trojanowski,Virginia M.-Y. Lee +18 more
TL;DR: It is shown that TDP-43 is the major disease protein in both frontotemporal lobar degeneration with ubiquitin-positive inclusions and amyotrophic lateral sclerosis.
Journal ArticleDOI
Expanded GGGGCC hexanucleotide repeat in noncoding region of C9ORF72 causes chromosome 9p-linked FTD and ALS
Mariely DeJesus-Hernandez,Ian R. A. Mackenzie,Bradley F. Boeve,Adam L. Boxer,Matt Baker,Nicola J. Rutherford,Alexandra M. Nicholson,Ni Cole A. Finch,Heather C. Flynn,Jennifer Adamson,Naomi Kouri,Aleksandra Wojtas,Pheth Sengdy,Ging-Yuek Robin Hsiung,Anna Karydas,William W. Seeley,Keith A. Josephs,Giovanni Coppola,Daniel H. Geschwind,Zbigniew K. Wszolek,Howard Feldman,Howard Feldman,David S. Knopman,Ronald C. Petersen,Bruce L. Miller,Dennis W. Dickson,Kevin B. Boylan,Neill R. Graff-Radford,Rosa Rademakers +28 more
TL;DR: It is found that repeat expansion in C9ORF72 is a major cause of both FTD and ALS, suggesting multiple disease mechanisms.
Journal ArticleDOI
Motor neuron degeneration in mice that express a human Cu,Zn superoxide dismutase mutation.
Mark E. Gurney,Haifeng Pu,Arlene Y. Chiu,Mauro C. Dal Canto,Cynthia Y. Polchow,Denise D. Alexander,Jan Caliendo,Afif Hentati,Young W. Kwon,Han Xiang Deng,W. Chen,Ping Zhai,Robert L. Sufit,Teepu Siddique +13 more
TL;DR: In this article, the authors found that mutations of human Cu,Zn superoxide dismutase (SOD) contribute to the pathogenesis of familial amyotrophic lateral sclerosis (ALS).
Journal ArticleDOI
A hexanucleotide repeat expansion in C9ORF72 is the cause of chromosome 9p21-linked ALS-FTD
Alan E. Renton,Elisa Majounie,Adrian James Waite,Javier Simón-Sánchez,Javier Simón-Sánchez,Sara Rollinson,J. Raphael Gibbs,J. Raphael Gibbs,Jennifer C. Schymick,Hannu Laaksovirta,John C. van Swieten,John C. van Swieten,Liisa Myllykangas,Hannu Kalimo,Anders Paetau,Yevgeniya Abramzon,Anne M. Remes,Alice Kaganovich,Sonja W. Scholz,Sonja W. Scholz,Sonja W. Scholz,Jamie Duckworth,Jinhui Ding,Daniel W. Harmer,Dena G. Hernandez,Dena G. Hernandez,Janel O. Johnson,Janel O. Johnson,Kin Y. Mok,Mina Ryten,Danyah Trabzuni,Rita Guerreiro,Richard W. Orrell,James Neal,Alexandra Murray,J. P. Pearson,Iris E. Jansen,David Sondervan,Harro Seelaar,Derek J. Blake,Kate Young,Nicola Halliwell,Janis Bennion Callister,Greg Toulson,Anna Richardson,Alexander Gerhard,Julie S. Snowden,David M. A. Mann,David Neary,Mike A. Nalls,Terhi Peuralinna,Lilja Jansson,Veli-Matti Isoviita,Anna-Lotta Kaivorinne,Maarit Hölttä-Vuori,Elina Ikonen,Raimo Sulkava,Michael Benatar,Joanne Wuu,Adriano Chiò,Gabriella Restagno,Giuseppe Borghero,Mario Sabatelli,David Heckerman,Ekaterina Rogaeva,Lorne Zinman,Jeffrey D. Rothstein,Michael Sendtner,Carsten Drepper,Evan E. Eichler,Can Alkan,Ziedulla Abdullaev,Svetlana Pack,Amalia Dutra,Evgenia Pak,John Hardy,Andrew B. Singleton,Nigel Williams,Peter Heutink,Stuart Pickering-Brown,Huw R. Morris,Huw R. Morris,Huw R. Morris,Pentti J. Tienari,Bryan J. Traynor,Bryan J. Traynor +85 more
TL;DR: The chromosome 9p21 amyotrophic lateral sclerosis-frontotemporal dementia (ALS-FTD) locus contains one of the last major unidentified autosomal-dominant genes underlying these common neurodegenerative diseases, and a large hexanucleotide repeat expansion in the first intron of C9ORF72 is shown.
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