Protocol for characterizing biomolecular condensates through live-cell imaging and analysis

Area of Science:

• Cell Biology
• Biophysics
• Microscopy

Background:

• Biomolecular condensates are crucial for cellular functions.
• Dysregulation of these condensates is implicated in diseases like cancer and neurodegeneration.
• They are also explored for drug delivery applications.

Purpose of the Study:

• To present a comprehensive protocol for characterizing biomolecular condensates.
• To enable detailed analysis of condensate behavior using confocal microscopy.
• To provide optimized methods for image acquisition and data analysis.

Main Methods:

• Utilized three confocal microscopy modalities: subcellular localization, FRAP, and time-lapse analysis.
• Developed optimized image acquisition parameters for high-quality data.
• Employed ImageJ macros and plugins for 2D and 3D analysis workflows.

Main Results:

• Established a robust protocol for quantifying biomolecular condensate properties.
• Demonstrated the utility of FRAP and time-lapse imaging for assessing condensate dynamics.
• Provided a framework for detailed spatial and temporal analysis of condensates.

Conclusions:

• The presented protocol offers a standardized approach for biomolecular condensate characterization.
• This methodology facilitates deeper understanding of condensate roles in health and disease.
• The protocol supports advancements in fields ranging from cell biology to therapeutic development.