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A novel method of screening cell-cycle blockers as candidates for anti-tumor reagents using yeast as a screening tool
Eiko Tsuchiya1, Masashi Yukawa, Masaru Ueno
1Department of Molecular Biotechnology, Graduate School of Advanced Sciences of Matter, Hiroshima University, Higashi-Hiroshima, Japan. etsuchi@hiroshima-u.ac.jp
Abstract:
The mechanisms of eukaryotic cell-cycle regulation are closely linked to cellular tumorigenesis. Compounds that affect the cell cycle are good candidates for developing anti-tumor drugs. We developed a screening method for cell-cycle blockers using a Saccharomyces cerevisiae cdc2-1 rad9Delta strain that can detect the activity of substances by cell growth. We performed screening on culture broth of various microbes, and identified five compounds, borrelidin, mycophenolic acid, UCS15A, copiamycin analog, and fredericamycin A, that were known to possess anti-tumor activity. These results indicate that this screening method is effective as a first-screening system for anti-tumor agents.
Insights
Researchers developed a novel screening method using yeast to identify potential anti-tumor drugs. This effective system successfully detected known anti-cancer compounds from microbial sources, aiding drug discovery.
Area of Science:
- Biochemistry
- Molecular Biology
- Microbiology
Background:
- Eukaryotic cell-cycle regulation is intrinsically linked to cancer development.
- Compounds influencing the cell cycle are promising candidates for novel anti-tumor therapies.
Purpose of the Study:
- To establish and validate a high-throughput screening method for identifying cell-cycle blockers.
- To assess the efficacy of this screening method in discovering potential anti-cancer agents from microbial sources.
Main Methods:
- Development of a screening assay utilizing a Saccharomyces cerevisiae cdc2-1 rad9Delta strain.
- Detection of substance activity through monitoring cellular growth.
- Screening of culture broths from diverse microbial species.
Main Results:
- Identification of five known anti-tumor compounds: borrelidin, mycophenolic acid, UCS15A, copiamycin analog, and fredericamycin A.
- Demonstration of the screening method's ability to detect bioactive compounds.
- Successful isolation of compounds with established anti-tumor properties.
Conclusions:
- The developed yeast-based screening method is effective for initial identification of anti-tumor agents.
- This system provides a valuable platform for early-stage anti-cancer drug discovery.
- Microbial screening holds potential for uncovering new therapeutic compounds targeting cell-cycle dysregulation.
