scholarly journals RNA Toxicity and Perturbation of rRNA Processing in Spinocerebellar Ataxia Type 2

2021 ◽  
Author(s):  
Pan P. Li ◽  
Roumita Moulick ◽  
Hongxuan Feng ◽  
Xin Sun ◽  
Nicolas Arbez ◽  
...  
Keyword(s):  
Spinocerebellar Ataxia ◽  
Spinocerebellar Ataxia Type ◽  
Rrna Processing ◽  
Spinocerebellar Ataxia Type 2 ◽  
Rna Toxicity

scholarly journals RNA toxicity and perturbation of rRNA processing in spinocerebellar ataxia type 2

2021 ◽  
Author(s):  
Pan P. Li ◽  
Roumita Moulick ◽  
Hongxuan Feng ◽  
Xin Sun ◽  
Nicolas Arbez ◽  
...  
Keyword(s):  
Human Brain ◽  
Brain Tissue ◽  
Spinocerebellar Ataxia ◽  
Cag Repeat ◽  
Spinocerebellar Ataxia Type ◽  
Rrna Processing ◽  
Spinocerebellar Ataxia Type 2 ◽  
Human Brain Tissue ◽  
Primary Mouse

BACKGROUND: Spinocerebellar ataxia type 2 (SCA2) is a neurodegenerative disease caused by expansion of a CAG repeat in Ataxin-2 (ATXN2) gene. The mutant ATXN2 protein with a polyglutamine tract is known to be toxic and contributes to the SCA2 pathogenesis. OBJECTIVE: Here we tested the hypothesis that the mutant ATXN2 transcript with an expanded CAG repeat (expATXN2) is also toxic and contributes to SCA2 pathogenesis. METHODS: The toxic effect of expATXN2 transcripts on SK-N-MC neuroblastoma cells and primary mouse cortical neurons was evaluated by caspase 3/7 activity and nuclear condensation assay, respectively. RNA immunoprecipitation assay was performed to identify RNA binding proteins (RBPs) that bind to expATXN2 RNA. Quantitative PCR was used to examine if rRNA processing is disrupted in SCA2 and Huntington disease (HD) human brain tissue. RESULTS: expATXN2 RNA induces neuronal cell death, and aberrantly interacts with RBPs involved in RNA metabolism. One of the RBPs, transducin beta-like protein 3 (TBL3), involved in rRNA processing, binds to both expATXN2 and expanded huntingtin (expHTT) RNA in vitro. rRNA processing is disrupted in both SCA2 and HD human brain tissue. CONCLUSION: These findings provide the first evidence of a contributory role of expATXN2 transcripts in SCA2 pathogenesis, and further support the role expHTT transcripts in HD pathogenesis. The disruption of rRNA processing, mediated by aberrant interaction of RBPs with expATXN2 and expHTT transcripts, suggest a point of convergence in the pathogeneses of repeat expansion diseases with potential therapeutic implications.

scholarly journals Generation of an isogenic, gene-corrected control cell line of the spinocerebellar ataxia type 2 patient-derived iPSC line H271

2016 ◽  
Vol 16 (1) ◽  
pp. 180-183 ◽  
Author(s):  
Adele G. Marthaler ◽  
Benjamin Schmid ◽  
Alisa Tubsuwan ◽  
Ulla B. Poulsen ◽  
Alexander F. Engelbrecht ◽  
...  
Keyword(s):  
Cell Line ◽  
Spinocerebellar Ataxia ◽  
Control Cell ◽  
Spinocerebellar Ataxia Type ◽  
Ipsc Line ◽  
Spinocerebellar Ataxia Type 2 ◽  
Control Cell Line

Spinocerebellar Ataxia Type 2 in a Turkish Family

2007 ◽  
Vol 22 (7) ◽  
pp. 891-894 ◽  
Author(s):  
Eray Dirik ◽  
Uluc Yis ◽  
Nazli Basak ◽  
Esra Soydan ◽  
Orkide Hüdaoğlu ◽  
...  
Keyword(s):  
Spinocerebellar Ataxia ◽  
Spinocerebellar Ataxia Type ◽  
Spinocerebellar Ataxia Type 2 ◽  
Turkish Family

Normal SCA2 alleles influences age at onset of spinocerebellar ataxia type 2 in Cuban patients

2008 ◽  
Vol 119 ◽  
pp. S173
Author(s):  
L.E. Almaguer Mederos ◽  
N. Falcón ◽  
Y. Almira ◽  
Y. Zaldivar ◽  
D. Almarales ◽  
...  
Keyword(s):  
Spinocerebellar Ataxia ◽  
Age At Onset ◽  
Spinocerebellar Ataxia Type ◽  
Spinocerebellar Ataxia Type 2

scholarly journals A clinical report of the massive CAG repeat expansion in spinocerebellar ataxia type 2: Severe onset in a Mexican child and review previous cases

2020 ◽  
Vol 43 (3) ◽  
Author(s):  
José Sánchez-Corona ◽  
Sergio Alberto Ramirez-Garcia ◽  
Gema Castañeda-Cisneros ◽  
Susan Andrea Gutiérrez-Rubio ◽  
Víctor Volpini ◽  
...  
Keyword(s):  
Spinocerebellar Ataxia ◽  
Repeat Expansion ◽  
Cag Repeat ◽  
Spinocerebellar Ataxia Type ◽  
Clinical Report ◽  
Spinocerebellar Ataxia Type 2 ◽  
Cag Repeat Expansion ◽  
Mexican Child

scholarly journals Genetic Rhabdomyolysis within the Spectrum of the Spinocerebellar Ataxia Type 2 Responsive to Pregabalin

2021 ◽  
Author(s):  
Fabian Rossi ◽  
Joe Ma ◽  
Nina Tsakadze ◽  
Lourdes Benes-Lima ◽  
Julio Araque Gonzalez ◽  
...  
Keyword(s):  
Cerebellar Ataxia ◽  
Spinocerebellar Ataxia ◽  
Clinical Presentation ◽  
Spinocerebellar Ataxia Type ◽  
Adult Onset ◽  
Spinocerebellar Ataxia Type 2 ◽  
First Report ◽  
Recurrent Rhabdomyolysis

Abstract BackgroundSpinocerebellar Ataxia type 2 is a slowly progressive adult onset ataxia with a broad clinical presentation. Case presentationWe describe a man with Spinocerebellar Ataxia type 2 with chronic, severe, and recurrent rhabdomyolysis, as part of the cerebellar ataxia genetic spectrum. Initially rhabdomyolysis was refractory to multiple medications, but entirely resolved and remained in chronic remission with pregabalin. ConclusionThis is the first report of Spinocerebellar Ataxia type 2 associated with chronic, severe, recurrent rhabdomyolysis as part of its genetic phenotype responsive to pregabalin.

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