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- W3158857088 abstract "Abstract It is still unclear why pathological amyloid deposition initiates in specific brain regions, nor why specific cells or tissues are more susceptible than others. Amyloid deposition is determined by the self-assembly of short protein segments called aggregation-prone regions (APRs) that favour cross-β structure. Here we investigated whether Aβ amyloid assembly can be modified by heterotypic interactions between Aβ APRs and short homologous segments in otherwise unrelated human proteins. We identified heterotypic interactions that accelerate Aβ assembly, modify fibril morphology and affect its pattern of deposition in vitro . Moreover, we found that co-expression of these proteins in an Aβ reporter cell line promotes Aβ amyloid aggregation. Importantly, reanalysis of proteomics data of Aβ plaques from AD patients revealed an enrichment in proteins that share homologous sequences to the Aβ APRs, suggesting heterotypic amyloid interactions may occur in patients. Strikingly, we did not find such a bias in plaques from overexpression models in mouse. Based on these data, we propose that heterotypic APR interactions may play a hitherto unrealised role in amyloid-deposition diseases." @default.
- W3158857088 created "2021-05-10" @default.
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- W3158857088 date "2021-04-30" @default.
- W3158857088 modified "2023-09-26" @default.
- W3158857088 title "Heterotypic Aβ interactions facilitate amyloid assembly and modify amyloid structure" @default.
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- W3158857088 doi "https://doi.org/10.1101/2021.04.28.441786" @default.
- W3158857088 hasPublicationYear "2021" @default.