Visualizing the spatiotemporal dynamics of DNA damage in budding yeast

Area of Science:

• Cell Biology
• Molecular Biology
• Genetics

Background:

• DNA damage response (DDR) is crucial for maintaining genomic stability.
• Fluorescence microscopy is a powerful tool for visualizing cellular processes.
• Understanding DNA double-strand break (DSB) dynamics is key to comprehending DDR.

Purpose of the Study:

• To describe three fluorescence microscopy techniques for analyzing DNA damage spatiotemporal dynamics.
• To provide protocols for quantifying DSB positions relative to the nuclear envelope.
• To enable quantification of DSB co-localization and locus mobility.

Main Methods:

• Determining the position of DNA double-strand breaks (DSBs) relative to the nuclear envelope.
• Quantifying the co-localization of DSBs with nuclear pore clusters and other nuclear subcompartments.
• Quantifying locus mobility over time using time-lapse microscopy.

Main Results:

• Established methods for precise spatial localization of DNA damage.
• Developed protocols for assessing the association of DSBs with specific nuclear structures.
• Enabled the measurement of DNA locus movement dynamics during DDR.

Conclusions:

• Fluorescence microscopy offers versatile approaches to study DNA damage dynamics.
• These methods facilitate a deeper understanding of the spatial and temporal aspects of DNA repair.
• The described techniques are valuable for research in DNA repair and genomic integrity.