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Updated: Aug 14, 2026

Nano-Differential Scanning Fluorimetry for Screening in Fragment-based Lead Discovery
Published on: May 16, 2021
A rational approach to maximize success rate in target discovery
1Research Laboratories of Schering AG, Enabling Technologies, Schering AG, Berlin, Germany. Martin.Schneider@Schering.de
Abstract:
To overcome the problem of high attrition rates in the drug discovery process, an efficient strategy how to identify, select, characterize and validate the most suitable drug targets before embarking on the resource-intense steps of lead discovery and lead optimization is mandatory. We have implemented such an efficient strategy consisting of (i) Target Selection based on gene expression analyses of drugable target genes in clinical samples and relevant in vitro model systems, to identify candidate targets with a specific tissue distribution and presence in human disease; (ii) Target Assessment exploiting the three-dimensional structure of proteins for detailed binding site analysis, to estimate the drugability of the protein for small-molecule inhibitor binding as well as selectivity profiles; and (iii) Target Validation providing evidence for a functional role in in vitro model systems, thus corroborating the biological hypothesis underlying the therapeutic concept. This rational approach has led to the discovery of drug targets for Lead Discovery, maximizing the likelihood for achieving target-selective inhibition by small-molecule inhibitors with minimal in vivo side effects and a therapeutic effect based on a sound biological hypothesis.
Insights
High attrition rates in drug discovery are reduced by a new strategy that efficiently identifies, selects, and validates drug targets. This approach enhances lead discovery, aiming for effective, selective inhibitors with fewer side effects.
Area of Science:
- Biochemistry
- Genomics
- Pharmacology
Background:
- High attrition rates in drug discovery necessitate improved strategies for target identification and validation.
- Early-stage selection of suitable drug targets is crucial for efficient lead discovery and optimization.
Purpose of the Study:
- To implement and demonstrate an efficient strategy for identifying, selecting, characterizing, and validating drug targets.
- To reduce attrition rates in drug discovery by ensuring targets are well-suited for small-molecule inhibitor development.
Main Methods:
- Target Selection: Gene expression analysis in clinical and in vitro samples to identify disease-relevant targets with specific tissue distribution.
- Target Assessment: Three-dimensional protein structure analysis to evaluate binding site characteristics, drugability, and selectivity for small-molecule inhibitors.
- Target Validation: In vitro functional studies to confirm the role of the target in disease models and support the therapeutic hypothesis.
Main Results:
- Successful identification of drug targets through a multi-faceted rational approach.
- Characterization of targets for drugability and selectivity, minimizing potential in vivo side effects.
- Validation of targets provides a strong biological basis for therapeutic concepts.
Conclusions:
- The implemented strategy significantly enhances the drug discovery process by improving early-stage target selection.
- This rational approach increases the probability of discovering selective small-molecule inhibitors with therapeutic efficacy.
- The method aims to maximize the likelihood of success in lead discovery and development, reducing overall attrition.
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