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Updated: Jul 16, 2026

07:39
SA-β-Galactosidase-Based Screening Assay for the Identification of Senotherapeutic Drugs
Published on: June 28, 2019
Beta galactosidase complementation: a cell-based luminescent assay platform for drug discovery
Keith R Olson1, Richard M Eglen
1DiscoveRx Corp., Fremont, CA, USA.
Assay and Drug Development Technologies
|March 16, 2007
Summary
Enzyme protein complementation assays, specifically using beta-galactosidase alpha complementation, offer a high-throughput screening alternative to microscopy for cell pathway analysis. This luminescent technology enables robust cell-based assay development.
Area of Science:
- Biochemistry
- Molecular Biology
- Cell Biology
Background:
- Cell-based assays for pathway activation often rely on microscopy, limiting their use in primary screening.
- High-throughput screening (HTS) requires adaptable and scalable assay formats.
Purpose of the Study:
- To review the applications of enzyme protein complementation for cell-based assay development.
- To highlight the advantages of luminescent beta-galactosidase alpha complementation for HTS.
Main Methods:
- Review of literature on protein complementation assays.
- Focus on beta-galactosidase alpha complementation strategies.
- Discussion of luminescent substrate utilization.
Main Results:
- Enzyme protein complementation, especially beta-galactosidase alpha complementation, is a viable HTS method.
- Luminescent signal generation allows for microtiter plate-based screening.
- This technology facilitates versatile cell-based assay development.
Conclusions:
- Protein complementation assays provide an efficient alternative to microscopy for cell pathway interrogation.
- Beta-galactosidase alpha complementation is a flexible and powerful tool for developing high-throughput cell-based assays.

