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Updated: Jun 17, 2026

Enrichment of Detergent-insoluble Protein Aggregates from Human Postmortem Brain
Published on: October 24, 2017
Emerging role of Alzheimer's disease-associated ubiquilin-1 in protein aggregation
Annakaisa Haapasalo1, Jayashree Viswanathan, Lars Bertram
1Department of Neurology, University of Kuopio, and Kuopio University Hospital, Kuopio, Finland.
Abstract:
Abnormal protein aggregation and intracellular or extracellular accumulation of misfolded and aggregated proteins are key events in the pathogenesis of different neurodegenerative diseases. Furthermore, endoplasmic reticulum stress and impairment of the ubiquitin-proteasome system probably contribute to neurodegeneration in these diseases. A characteristic feature of AD (Alzheimer's disease) is the abnormal accumulation of Abeta (amyloid beta-peptide) in the brain. Evidence shows that the AD-associated PS (presenilin) also forms aggregates under certain conditions and that another AD-associated protein, ubiquilin-1, controls protein aggregation and deposition of aggregated proteins. Here, we review the current knowledge of ubiquilin-1 and PS in protein aggregation and related events that potentially influence neurodegeneration.
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