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Labeling and Imaging of Amyloid Plaques in Brain Tissue Using the Natural Polyphenol Curcumin
Published on: November 1, 2019
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Curcumin Interacts with α-Synuclein Condensates To Inhibit Amyloid Aggregation under Phase Separation.
Bingkuan Xu1, Jing Chen1, Yinghui Liu1
1Jiangsu Key Laboratory for Molecular and Medical Biotechnology, College of Life Sciences, Nanjing Normal University, Nanjing 210023, China.
ACS Omega
|September 5, 2022
Summary
Curcumin, a natural molecule, inhibits alpha-synuclein amyloid formation by reducing its fluidity within condensates, offering a potential therapeutic strategy for Parkinson's disease.
Area of Science:
- Biochemistry
- Neuroscience
- Pharmacology
Background:
- Alpha-synuclein (α-Syn) amyloid aggregation is a hallmark of Parkinson's disease (PD).
- Recent research indicates that α-Syn undergoes liquid-liquid phase separation (LLPS), which accelerates amyloid formation.
- Targeting α-Syn phase separation presents a novel therapeutic avenue for PD.
Purpose of the Study:
- To investigate the effect of curcumin on α-Syn phase separation and subsequent amyloid aggregation.
- To explore curcumin's potential as a modulator of α-Syn aggregation relevant to Parkinson's disease.
Main Methods:
- Investigated curcumin's interaction with α-Syn during phase separation.
- Assessed the impact of curcumin on α-Syn condensate formation, fluidity, and amyloid conversion.
- Examined curcumin's effects on PD-associated α-Syn mutants (E46K, H50Q) and preformed aggregates.
Main Results:
- Curcumin did not alter α-Syn condensate formation or initial morphology.
- Curcumin significantly decreased the fluidity of α-Syn within condensates.
- Curcumin effectively inhibited α-Syn amyloid formation, including PD mutants, and destabilized preformed aggregates.
Conclusions:
- Curcumin modulates α-Syn amyloid formation by altering protein fluidity during phase separation.
- Small molecules like curcumin can regulate α-Syn amyloid aggregation, offering potential therapeutic strategies for Parkinson's disease.
