Screening for modulators of aggregation with a microplate elongation assay

Area of Science:

• Biochemistry
• Neuroscience
• Drug Discovery

Background:

• Protein misfolding diseases, including neurodegenerative conditions, are linked to amyloid/amyloid-like fibril deposits.
• Mechanisms of fibril formation and cellular toxicity remain poorly understood.
• Modulators of protein aggregate formation offer insights into assembly and potential therapeutic strategies.

Purpose of the Study:

• To establish a microplate-based high-throughput screening assay for identifying small molecules that modulate protein aggregate formation.
• To provide a tool for studying the mechanisms of aggregate assembly and cellular toxicity.

Main Methods:

• Developed a high-throughput screening assay using microplate-coated aggregates that elongate by incorporating monomers.
• Identified hit compounds that influence the aggregate elongation reaction.
• Utilized dose-response experiments to validate hits and characterized modes of action.

Main Results:

• Successfully established a microplate-based assay for screening aggregation modulators.
• Demonstrated the assay's capability to identify compounds influencing fibril elongation.
• Outlined further experiments for detailed characterization of identified modulators.

Conclusions:

• The developed assay is effective for high-throughput screening of molecules affecting protein aggregate formation.
• This tool aids in understanding disease mechanisms and discovering potential therapeutics for protein misfolding disorders.
• Further characterization of identified modulators can elucidate their specific mechanisms and therapeutic potential.