Schorpp, K.K. ; Rothenaigner, I. ; Salmina, E. ; Reinshagen, J.* ; Low, T.* ; Brenke, J.K. ; Gopalakrishnan, J.* ; Tetko, I.V. ; Gul, S.* ; Hadian, K.
Identification of small-molecule frequent hitters from AlphaScreen high-throughput screens.
J. Biomol. Screen. 19, 715-726 (2013)
Although small-molecule drug discovery efforts have focused largely on enzyme, receptor, and ion-channel targets, there has been an increase in such activities to search for protein-protein interaction (PPI) disruptors by applying high-throughout screening (HTS)-compatible protein-binding assays. However, a disadvantage of these assays is that many primary hits are frequent hitters regardless of the PPI being investigated. We have used the AlphaScreen technology to screen four different robust PPI assays each against 25,000 compounds. These activities led to the identification of 137 compounds that demonstrated repeated activity in all PPI assays. These compounds were subsequently evaluated in two AlphaScreen counter assays, leading to classification of compounds that either interfered with the AlphaScreen chemistry (60 compounds) or prevented the binding of the protein His-tag moiety to nickel chelate (Ni(2+)-NTA) beads of the AlphaScreen detection system (77 compounds). To further triage the 137 frequent hitters, we subsequently confirmed by a time-resolved fluorescence resonance energy transfer assay that most of these compounds were only frequent hitters in AlphaScreen assays. A chemoinformatics analysis of the apparent hits provided details of the compounds that can be flagged as frequent hitters of the AlphaScreen technology, and these data have broad applicability for users of these detection technologies.
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Publication type
Article: Journal article
Document type
Scientific Article
Thesis type
Editors
Keywords
Alphascreen ; Protein-protein Interaction ; Assay Development ; Frequent Hitter ; Drug Discovery ; High-throughput Screening; Protein-protein Interactions; Drug Discovery; Solubility; Chemistry; Libraries; Fragment; Filters; Models; Domain
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Language
english
Publication Year
2013
Prepublished in Year
HGF-reported in Year
2014
ISSN (print) / ISBN
1087-0571
e-ISSN
1552-454X
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Quellenangaben
Volume: 19,
Issue: 5,
Pages: 715-726
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Sage
Publishing Place
Thousand Oaks
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0000-00-00
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Reviewing status
Peer reviewed
POF-Topic(s)
30203 - Molecular Targets and Therapies
Research field(s)
Enabling and Novel Technologies
PSP Element(s)
G-505293-001
G-503000-003
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Copyright
Erfassungsdatum
2014-01-27