The fidgety yeast: focus on high-resolution live yeast cell microscopy

Area of Science:

• Cell Biology
• Microscopy
• Systems Biology

Background:

• Yeast (Saccharomyces cerevisiae) is a small eukaryotic cell, approximately 5-8 µm in size, making it suitable for light microscopic analysis.
• Its genetic manipulability, rapid growth, and cultivation flexibility facilitate in vivo functional studies and analysis of cellular dynamics.
• Yeast's role as a model organism in understanding eukaryotic cellular processes drives its use in technological development and biomedical research.

Purpose of the Study:

• To discuss experimental strategies for live yeast cell imaging, particularly for imaging-based large-scale screens.
• To highlight methods for immobilizing yeast cells under physiological conditions with minimal impact.
• To identify potential pitfalls in live cell imaging and emphasize careful experimental design and data interpretation.

Main Methods:

• Genome-wide tagging with fluorescent proteins for visualization.
• Simultaneous visualization of large cell populations for statistical image analysis.
• Cultivation techniques for biochemical manipulation, mutant isolation, and drug susceptibility testing.

Main Results:

• Yeast's small size and optical properties are advantageous for light microscopy.
• High-throughput imaging of yeast enables reliable morphological and localization data.
• Flexible cultivation supports diverse in vivo functional studies and analysis of cellular dynamics.

Conclusions:

• Live yeast cell imaging offers powerful strategies for large-scale screens and understanding fundamental cellular processes.
• Effective immobilization techniques are essential for maintaining physiological conditions during imaging.
• Rigorous experimental design and data interpretation are critical to avoid misleading conclusions in yeast imaging studies.