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Updated: May 22, 2026

Testing Targeted Therapies in Cancer using Structural DNA Alteration Analysis and Patient-Derived Xenografts
Published on: July 25, 2020
A chemocentric approach to the identification of cancer targets
Beáta Flachner1, Zsolt Lörincz, Angelo Carotti
1TargetEx, Dunakeszi, Hungary.
Abstract:
A novel chemocentric approach to identifying cancer-relevant targets is introduced. Starting with a large chemical collection, the strategy uses the list of small molecule hits arising from a differential cytotoxicity screening on tumor HCT116 and normal MRC-5 cell lines to identify proteins associated with cancer emerging from a differential virtual target profiling of the most selective compounds detected in both cell lines. It is shown that this smart combination of differential in vitro and in silico screenings (DIVISS) is capable of detecting a list of proteins that are already well accepted cancer drug targets, while complementing it with additional proteins that, targeted selectively or in combination with others, could lead to synergistic benefits for cancer therapeutics. The complete list of 115 proteins identified as being hit uniquely by compounds showing selective antiproliferative effects for tumor cell lines is provided.
Insights
This study introduces a novel chemocentric approach using differential in vitro and in silico screenings (DIVISS) to identify new cancer targets. The method successfully pinpointed known and novel proteins for enhanced cancer therapeutics.
Area of Science:
- Oncology
- Medicinal Chemistry
- Computational Biology
Background:
- Identifying novel cancer drug targets is crucial for developing effective therapeutics.
- Existing methods may not fully exploit the potential of chemical libraries for target discovery.
Purpose of the Study:
- To introduce and validate a novel chemocentric strategy for identifying cancer-relevant protein targets.
- To leverage differential cytotoxicity screening and virtual target profiling for enhanced drug discovery.
Main Methods:
- Utilized a large chemical collection for screening against HCT116 (tumor) and MRC-5 (normal) cell lines.
- Applied differential virtual target profiling to selective small molecule hits.
- Combined in vitro and in silico screenings (DIVISS) for target identification.
Main Results:
- Identified 115 proteins uniquely hit by compounds with selective antiproliferative effects on tumor cells.
- Validated known cancer drug targets and discovered additional potential targets.
- Demonstrated the efficacy of the DIVISS approach in cancer target discovery.
Conclusions:
- The DIVISS approach is effective for identifying both established and novel cancer targets.
- The identified protein list offers potential for developing synergistic cancer therapeutics.
- This chemocentric strategy advances the field of targeted cancer drug discovery.
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