Detailed Information on Publication Record
2020
Nuclear inclusions of pathogenic ataxin-1 induce oxidative stress and perturb the protein synthesis machinery
LAIDOU, Stamatia, Gregorio ALANIS-LOBATO, Jan PŘIBYL, Tamás RASKÓ, Boris TICHÝ et. al.Basic information
Original name
Nuclear inclusions of pathogenic ataxin-1 induce oxidative stress and perturb the protein synthesis machinery
Authors
LAIDOU, Stamatia, Gregorio ALANIS-LOBATO, Jan PŘIBYL (203 Czech Republic, belonging to the institution), Tamás RASKÓ, Boris TICHÝ (203 Czech Republic, belonging to the institution), Kamil MIKULÁŠEK (203 Czech Republic, belonging to the institution), Maria TSAGIOPOULOU, Jan OPPELT (203 Czech Republic, belonging to the institution), Georgia KASTRINAKI, Maria LEFAKI, Manvendra SINGH, Annika ZINK, Niki CHONDROGIANNI, Fotis PSOMOPOULOS, Alessandro PRIGIONE, Zoltan IVICS, Šárka POSPÍŠILOVÁ (203 Czech Republic, belonging to the institution), Petr SKLÁDAL (203 Czech Republic, belonging to the institution), Zsuzsanna IZSVAK, Miguel A. ANDRADE-NAVARRO and Spyros PETRAKIS
Edition
Redox Biology, Amsterdam, Elsevier, 2020, 2213-2317
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10608 Biochemistry and molecular biology
Country of publisher
Netherlands
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 11.799
RIV identification code
RIV/00216224:14740/20:00116844
Organization unit
Central European Institute of Technology
UT WoS
000537459900001
Keywords in English
Ataxin-1; Polyglutamine; Sleeping beauty transposon; Oxidative stress; Protein network; Ribosome
Tags
International impact, Reviewed
Změněno: 2/11/2024 20:27, Ing. Martina Blahová
Abstract
V originále
Spinocerebellar ataxia type-1 (SCA1) is caused by an abnormally expanded polyglutamine (polyQ) tract in ataxin-1. These expansions are responsible for protein misfolding and self-assembly into intranuclear inclusion bodies (IIBs) that are somehow linked to neuronal death. However, owing to lack of a suitable cellular model, the downstream consequences of IIB formation are yet to be resolved. Here, we describe a nuclear protein aggregation model of pathogenic human ataxin-1 and characterize IIB effects. Using an inducible Sleeping Beauty transposon system, we overexpressed the ATXN1(Q82) gene in human mesenchymal stem cells that are resistant to the early cytotoxic effects caused by the expression of the mutant protein. We characterized the structure and the protein composition of insoluble polyQ IIBs which gradually occupy the nuclei and are responsible for the generation of reactive oxygen species. In response to their formation, our transcriptome analysis reveals a cerebellum-specific perturbed protein interaction network, primarily affecting protein synthesis. We propose that insoluble polyQ IIBs cause oxidative and nucleolar stress and affect the assembly of the ribosome by capturing or down-regulating essential components. The inducible cell system can be utilized to decipher the cellular consequences of polyQ protein aggregation. Our strategy provides a broadly applicable methodology for studying polyQ diseases.
Links
EF16_013/0001776, research and development project |
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LM2018140, research and development project |
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692298, interní kód MU |
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90132, large research infrastructures |
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