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Updated: Jun 14, 2025

Technique for Intranasal Administration of α-Synuclein Aggregates
Published on: November 8, 2024
Heterotypic Droplet Formation by Pro-Inflammatory S100A9 and Neurodegenerative Disease-Related α-Synuclein
Dominykas Veiveris1, Aurimas Kopustas1,2, Darius Sulskis1
1Institute of Biotechnology, Life Sciences Center, Vilnius University, Vilnius LT-10257, Lithuania.
Pro-inflammatory S100A9 protein forms liquid-liquid phase separation (LLPS) droplets with alpha-synuclein. This interaction alters alpha-synuclein aggregation, offering insights into neurodegenerative disease mechanisms.
Area of Science:
- Biochemistry
- Neuroscience
- Molecular Biology
Background:
- Liquid-liquid phase separation (LLPS) is crucial for biomolecular condensate formation.
- Neurodegenerative disease proteins like alpha-synuclein and amyloid-beta can form heterotypic droplets.
- Pro-inflammatory S100A9 influences amyloidogenic protein aggregation.
Purpose of the Study:
- To investigate heterotypic droplet formation between S100A9 and alpha-synuclein.
- To understand how S100A9-alpha-synuclein interactions affect protein aggregation mechanisms.
Main Methods:
- Exploration of heterotypic condensate formation using S100A9 and alpha-synuclein mixtures.
- Analysis of alterations in alpha-synuclein aggregation pathways due to S100A9 interaction.
Main Results:
- S100A9 and alpha-synuclein mixtures form both homotypic and heterotypic condensates.
- The cross-interaction between S100A9 and alpha-synuclein modifies the aggregation mechanism of alpha-synuclein.
Conclusions:
- S100A9 plays a role in the LLPS and aggregation of alpha-synuclein.
- Findings provide insights into the impact of S100A9 on neurodegenerative disease-related protein behavior.
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