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Updated: Jun 17, 2026
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High-throughput Screening for Protein-based Inheritance in S. cerevisiae
Published on: August 8, 2017
Integrating high-throughput genetic interaction mapping and high-content screening to explore yeast spindle
Franco J Vizeacoumar1, Nydia van Dyk, Frederick S Vizeacoumar
1Banting and Best Department of Medical Research, University of Toronto, Toronto, Ontario M5S 3E1, Canada.
The Journal of Cell Biology
|January 13, 2010
Summary
We developed a new screening method combining yeast genetics and high-content screening to study cell division. This approach identified key genes regulating mitotic spindle disassembly, offering insights into cell cycle control.
Area of Science:
- Cell Biology
- Genetics
- Molecular Biology
Background:
- Mitotic spindle morphogenesis is crucial for accurate cell division.
- Understanding the regulation of mitotic spindle disassembly is essential for cell cycle control.
- Existing screening methods have limitations in analyzing complex genetic interactions and cellular morphology.
Purpose of the Study:
- To develop and apply an integrated high-content screening (HCS) and synthetic genetic array (SGA) analysis approach for studying mitotic spindle morphogenesis.
- To identify genes and pathways involved in mitotic spindle disassembly.
- To investigate the function of the kinetochore protein Mcm21p in regulating spindle disassembly.
Main Methods:
- Utilized automated yeast genetics and SGA analysis combined with HCS.
- Measured numerous spindle and cellular morphological parameters in thousands of single and double mutants.
- Focused on genes within the mitotic spindle disassembly pathway, including Ipl1p (yeast aurora B kinase), MEN, and FEAR networks.
Main Results:
- Identified a conserved pathway regulating mitotic spindle disassembly.
- Dissected the role of Mcm21p sumoylation in recruiting chromosomal passenger proteins to the spindle midzone.
- Demonstrated that Mcm21p sumoylation is critical for proper spindle disassembly.
Conclusions:
- The integrated HCS-SGA method is a powerful tool for dissecting cellular pathways.
- This approach provides novel insights into the regulation of mitotic spindle disassembly.
- The findings highlight the importance of Mcm21p sumoylation in ensuring accurate chromosome segregation.
