Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/80014
Título: | A robust assay to monitor ataxin-3 amyloid fibril assembly |
Autor(es): | Figueiredo, Francisco Lopes-Marques, Mónica Almeida, Bruno Matscheko, Nena Martins, Pedro M. Silva, Alexandra Macedo-Ribeiro, Sandra |
Palavras-chave: | Thioflavin-T Polyglutamine expansion Reproducibility Ubiquitin Self-association rates Equilibrium dissociation constant SwitchSENSE |
Data: | 19-Jun-2022 |
Editora: | Multidisciplinary Digital Publishing Institute (MDPI) |
Revista: | Cells |
Citação: | Figueiredo, F.; Lopes-Marques, M.; Almeida, B.; Matscheko, N.; Martins, P.M.; Silva, A.; Macedo-Ribeiro, S. A Robust Assay to Monitor Ataxin-3 Amyloid Fibril Assembly. Cells 2022, 11, 1969. https://doi.org/10.3390/cells11121969 |
Resumo(s): | Spinocerebellar ataxia type 3 (SCA3) is caused by the expansion of a glutamine repeat in the protein ataxin-3, which is deposited as intracellular aggregates in affected brain regions. Despite the controversial role of ataxin-3 amyloid structures in SCA3 pathology, the identification of molecules with the capacity to prevent aberrant self-assembly and stabilize functional conformation(s) of ataxin-3 is a key to the development of therapeutic solutions. Amyloid-specific kinetic assays are routinely used to measure rates of protein self-assembly in vitro and are employed during screening for fibrillation inhibitors. The high tendency of ataxin-3 to assemble into oligomeric structures implies that minor changes in experimental conditions can modify ataxin-3 amyloid assembly kinetics. Here, we determine the self-association rates of ataxin-3 and present a detailed study of the aggregation of normal and pathogenic ataxin-3, highlighting the experimental conditions that should be considered when implementing and validating ataxin-3 amyloid progress curves in different settings and in the presence of ataxin-3 interactors. This assay provides a unique and robust platform to screen for modulators of the first steps of ataxin-3 aggregation—a starting point for further studies with cell and animal models of SCA3. |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/80014 |
DOI: | 10.3390/cells11121969 |
e-ISSN: | 2073-4409 |
Versão da editora: | https://www.mdpi.com/2073-4409/11/12/1969 |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
---|---|---|---|---|
cells-11-01969.pdf | 6,71 MB | Adobe PDF | Ver/Abrir |
Este trabalho está licenciado sob uma Licença Creative Commons