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Updated: Mar 31, 2026
High-throughput Screening for Chemical Modulators of Post-transcriptionally Regulated Genes
Published on: March 3, 2015
The cell competition-based high-throughput screening identifies small compounds that promote the elimination of
Hajime Yamauchi1, Takanori Matsumaru2, Tomoko Morita1
1Division of Molecular Oncology, Institute for Genetic Medicine, Hokkaido University Graduate School of Chemical Sciences and Engineering, Sapporo, Japan.
Abstract:
Recent studies have revealed that cell competition can occur between normal and transformed epithelial cells; normal epithelial cells recognize the presence of the neighboring transformed cells and actively eliminate them from epithelial tissues. Here, we have established a brand-new high-throughput screening platform that targets cell competition. By using this platform, we have identified Rebeccamycin as a hit compound that specifically promotes elimination of RasV12-transformed cells from the epithelium, though after longer treatment it shows substantial cytotoxic effect against normal epithelial cells. Among several Rebeccamycin-derivative compounds, we have found that VC1-8 has least cytotoxicity against normal cells but shows the comparable effect on the elimination of transformed cells. This cell competition-promoting activity of VC1-8 is observed both in vitro and ex vivo. These data demonstrate that the cell competition-based screening is a promising tool for the establishment of a novel type of cancer preventive medicine.
Insights
Scientists discovered a new screening method to find compounds that eliminate cancerous cells through cell competition. Rebeccamycin and its derivative VC1-8 show promise for cancer prevention by targeting transformed cells.
Area of Science:
- Oncology
- Cell Biology
- Pharmacology
Background:
- Cell competition is a biological process where normal cells eliminate neighboring transformed cells.
- Identifying compounds that selectively eliminate transformed cells is crucial for cancer prevention strategies.
Purpose of the Study:
- To establish a high-throughput screening platform for cell competition.
- To identify novel compounds that promote the elimination of transformed epithelial cells.
Main Methods:
- Development of a novel high-throughput screening platform to study cell competition.
- Screening of compounds, including Rebeccamycin and its derivatives, for their ability to promote transformed cell elimination.
- In vitro and ex vivo validation of compound efficacy and cytotoxicity.
Main Results:
- A high-throughput screening platform for cell competition was successfully established.
- Rebeccamycin was identified as a hit compound promoting RasV12-transformed cell elimination, with notable cytotoxicity to normal cells upon prolonged exposure.
- The Rebeccamycin derivative, VC1-8, demonstrated comparable elimination of transformed cells with significantly reduced cytotoxicity to normal cells, validated both in vitro and ex vivo.
Conclusions:
- Cell competition-based screening is a viable approach for discovering novel cancer preventive agents.
- VC1-8 represents a promising candidate for developing new cancer preventive medicines due to its selective elimination of transformed cells.
