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On the Relationship between Molecular Hit Rates in High-Throughput Screening and Molecular Descriptors
Umeå University, Faculty of Science and Technology, Department of Chemistry. Chemistry Innovation Center, Discovery Sciences, AstraZeneca R&D Mölndal, Mölndal, Sweden.
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2014 (English)In: Journal of Biomolecular Screening, ISSN 1087-0571, E-ISSN 1552-454X, Vol. 19, no 5, 727-737 p.Article in journal (Refereed) Published
Abstract [en]

W High-throughput screening (HTS) is widely used in the pharmaceutical industry to identify novel chemical starting points for drug discovery projects. The current study focuses on the relationship between molecular hit rate in recent in-house HTS and four common molecular descriptors: lipophilicity (ClogP), size (heavy atom count, HEV), fraction of sp(3)-hybridized carbons (Fsp3), and fraction of molecular framework (f(MF)). The molecular hit rate is defined as the fraction of times the molecule has been assigned as active in the HTS campaigns where it has been screened. Beta-binomial statistical models were built to model the molecular hit rate as a function of these descriptors. The advantage of the beta-binomial statistical models is that the correlation between the descriptors is taken into account. Higher degree polynomial terms of the descriptors were also added into the beta-binomial statistic model to improve the model quality. The relative influence of different molecular descriptors on molecular hit rate has been estimated, taking into account that the descriptors are correlated to each other through applying beta-binomial statistical modeling. The results show that ClogP has the largest influence on the molecular hit rate, followed by Fsp3 and HEV. f(MF) has only a minor influence besides its correlation with the other molecular descriptors.

Place, publisher, year, edition, pages
Society for Laboratory Automation and Screening - Manitowoc, WI , 2014. Vol. 19, no 5, 727-737 p.
Keyword [en]
HTS, molecular promiscuity, beta-binomial statistics
National Category
Chemical Sciences
URN: urn:nbn:se:umu:diva-92958DOI: 10.1177/1087057113499631ISI: 000340210300012OAI: diva2:746438
Available from: 2014-09-12 Created: 2014-09-09 Last updated: 2014-09-12Bibliographically approved

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Hansson, Mari
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