Abstract
The screening files of many large companies, including Pfizer, have grown considerably due to internal chemistry efforts, company mergers and acquisitions, external contracted synthesis, or compound purchase schemes. In order to screen the targets of interest in a cost-effective fashion, we devised an easy-to-assemble, plate-based diversity subset (PBDS) that represents almost the entire computed chemical space of the screening file whilst comprising only a fraction of the plates in the collection. In order to create this file, we developed new design principles for the quality assessment of screening plates: the Rule of 40 (Ro40) and a plate selection process that insured excellent coverage of both library chemistry and legacy chemistry space. This paper describes the rationale, design, construction, and performance of the PBDS, that has evolved into the standard paradigm for singleton (one compound per well) high-throughput screening in Pfizer since its introduction in 2006.
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Abbreviations
- ECFP4:
-
SciTegic/Accelrys’ level 4 extended connectivity fingerprints
- FE:
-
File enrichment
- GDRS:
-
Global diverse representative subset
- HTS:
-
High throughput screening
- Legacy compound:
-
A molecule synthesised as a singleton or in a small group of \(\le \) 10 compounds using methods such as stem reaction blocks [46]
- Library compound:
-
A molecule synthesised by large scale (10–100s or even 1,000s of compounds) parallel chemistry methods
- PBDS:
-
Plate-based diversity subset
- PMC:
-
Parallel medicinal chemistry
- SAR:
-
Structure–activity relationships
- Screening file:
-
The entire set of compounds in an organisation’s high throughput screening collection
- Screening subset:
-
A screening collection produced by selecting compounds or plates from the entire screening file using either targeted or diversity approaches
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Acknowledgments
We gratefully acknowledge contributions made to this work from the following Pfizer staff in Research and Research Informatics: Alexander Alex, Francois Bertelli, Mark Gardner, Katrina Gore, Marcel De Groot, Willem Van Hoorn, Travis Mathewson, Bruce Posner, Steve Street, Tony Wood and Siew Kuen Yeap.
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Bell, A.S., Bradley, J., Everett, J.R. et al. Plate-based diversity subset screening: an efficient paradigm for high throughput screening of a large screening file. Mol Divers 17, 319–335 (2013). https://doi.org/10.1007/s11030-013-9438-x
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DOI: https://doi.org/10.1007/s11030-013-9438-x