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Single-bead, single-molecule, single-cell fluorescence: technologies for drug screening and target validation
Martin Hintersteiner1, Manfred Auer
1Novartis Institutes for BioMedical Research, Innovative Screening Technologies, Brunner Strasse 59, A-1230 Vienna, Austria.
Annals of the New York Academy of Sciences
|July 4, 2008
Summary
The pharmaceutical industry faces challenges from generic competition and stalled innovation. This study integrates fluorescence spectroscopy with bead-based methods for a more efficient drug discovery process, yielding validated molecular inhibitors.
Area of Science:
- Drug Discovery and Development
- Quantitative Biology
- Biophysics
Background:
- The pharmaceutical industry is experiencing declining sales due to generic competition and a lack of new blockbusters.
- Regulatory bodies are increasing scrutiny, demanding more extensive safety studies for drug approvals.
- Existing drug discovery methods often suffer from high attrition rates and disconnected processes.
Purpose of the Study:
- To develop an integrated approach for hit and lead discovery to improve efficiency and reduce compound attrition.
- To leverage quantitative biology and biophysical methods, particularly fluorescence spectroscopy, in a unified process.
- To generate mechanistically characterized, cellularly validated binders and inhibitors for drug discovery.
Main Methods:
- Integration of bead-based synthesis and screening with confocal fluorescence microspectroscopy.
- Utilizing fluorescence spectroscopy for its high sensitivity and single-molecule resolution in characterizing molecular interactions.
- A multistep characterization process following initial on-bead screening to validate hits.
Main Results:
- Successful development of a fully integrated hit and lead discovery workflow.
- Identification of fluorescent ligands through on-bead screening.
- Generation of mechanistically characterized, cellularly validated small-molecular inhibitors.
Conclusions:
- The integrated approach significantly enhances the drug discovery process by combining synthesis, screening, and advanced biophysical characterization.
- Fluorescence-based methods, when applied in a connected manner, provide unparalleled molecular insights.
- This methodology yields validated chemical starting points for drug discovery and target validation.
