A guide for single-particle chromatin tracking in live cell nuclei

Area of Science:

• Cell Biology
• Biophysics
• Microscopy

Background:

• Advanced labeling strategies and live cell imaging now allow visualization of chromatin at nanometer resolution and millisecond timescales.
• These advancements are crucial for understanding the complex structure, dynamics, and functions of chromatin within living cells.
• Single molecule tracking (SMT) algorithms are key for quantifying intranuclear element movement and interpreting chromatin's spatiotemporal evolution.

Purpose of the Study:

• To review fluorescent labeling strategies for chromatin in live cells.
• To systematically compare live cell imaging instrumentation.
• To discuss image analysis pipelines for extracting chromatin biophysical properties and provide practical guidance for biologists.

Main Methods:

• Summary of fluorescent labeling techniques for live cell chromatin imaging.
• Comparative analysis of various live cell imaging microscopes.
• Overview of image analysis pipelines for biophysical property extraction.

Main Results:

• Detailed comparison of imaging instrumentation and labeling strategies.
• Discussion of SMT algorithms for chromatin dynamics.
• Identification of methods for extracting chromatin biophysical properties.

Conclusions:

• The integration of advanced imaging and tracking methods offers unprecedented insights into chromatin behavior.
• Proper selection of methods and analysis pipelines is essential for accurate interpretation of chromatin dynamics and function.
• This review aims to empower biologists with the knowledge to choose appropriate techniques for their specific research objectives.