1. Small heat shock protein 22 kDa can modulate the aggregation and liquid–liquid phase separation behavior of tau
- Author
-
Chad A. Dickey, Stefan G Creodore, April L. Darling, Laura J. Blair, Vladimir N. Uversky, and Jan Dahrendorff
- Subjects
0303 health sciences ,Chemistry ,Full‐Length Papers ,030302 biochemistry & molecular biology ,Aggregation rate ,tau Proteins ,Biochemistry ,In vitro ,Protein Aggregates ,03 medical and health sciences ,Microtubule associated protein tau ,Heat shock protein ,Biophysics ,Extracellular ,Humans ,Liquid liquid ,Molecular Biology ,Small Heat-Shock Proteins ,Heat-Shock Proteins ,Intracellular ,Molecular Chaperones ,030304 developmental biology - Abstract
Alzheimer's disease is a progressive fatal neurodegenerative disease with no cure or effective treatments. The hallmarks of disease include extracellular plaques and intracellular tangles of aggregated protein. The intracellular tangles consist of the microtubule associated protein tau. Preventing the pathological aggregation of tau may be an important therapeutic approach to treat disease. In this study we show that small heat shock protein 22 kDa (Hsp22) can prevent the aggregation of tau in vitro. Additionally, tau can undergo liquid–liquid phase separation (LLPS) in the presence of crowding reagents which causes it to have an increased aggregation rate. We show that Hsp22 can modulate both the aggregation and LLPS behavior of tau in vitro.
- Published
- 2021