Toward performance-diverse small-molecule libraries for cell-based phenotypic screening using multiplexed...

Area of Science:

• Drug Discovery
• Chemical Biology
• High-Throughput Screening

Background:

• High-throughput screening (HTS) is crucial for identifying small-molecule probes and early drug candidates.
• Systematic construction and evolution of efficient screening libraries for cell-based and biochemical assays remain challenging.
• The assumption that chemical structure diversity equates to diverse biological activity is not always accurate.

Purpose of the Study:

• To propose and validate a novel strategy for constructing screening libraries with diverse assay performance patterns for cell-based screens.
• To move beyond traditional assay-based metrics by leveraging high-dimensional biological profiles.
• To enhance the efficiency and effectiveness of small-molecule screening collections.

Main Methods:

• Utilized high-dimensional, image-based cell morphology and gene expression profiles for compound characterization.
• Employed multiplexed profiling to derive biological measurement diversity.
• Applied this approach to pilot a collection of over 30,000 compounds.

Main Results:

• Demonstrated that biological measurement diversity is a more effective metric than chemical structure diversity for library construction.
• Showcased the utility of small-molecule profiling for selecting compound sets with high activity rates.
• Confirmed the ability to generate libraries exhibiting diverse biological performance patterns.

Conclusions:

• Biological measurement diversity, derived from multiplexed profiling, offers a superior strategy for building screening libraries.
• This approach enhances the selection of compounds with varied assay performance, leading to more efficient drug discovery.
• High-dimensional cell morphology and gene expression profiling provide a scalable and effective method for optimizing screening collections.