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Identification of novel inhibitors of the type I interferon induction pathway using cell-based high-throughput screening

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Date
10/2016
Author
Gage, Zoe Olivia
Vasou, Andri
Gray, David
Randall, Richard Edward
Adamson, Catherine Sarah
Keywords
Interferon
Innate immunity
IRF3
NF-kappa B
High throughput screen (HTS)
RB Pathology
QH301 Biology
NDAS
Metadata
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Abstract
Production of type I interferon (IFN) is an essential component of the innate immune response against invading pathogens. However, its production must be tightly regulated to avoid harmful effects. Compounds that modulate the IFN response are potentially valuable for a variety of applications due to IFNs beneficial and detrimental roles. We developed and executed a cell-based high-throughput screen (HTS) targeting components that participate in and/or regulate the IRF3 and NF-κB branches of the IFN-induction pathway. The assay detects activation of the IFN-induction pathway via an eGFP reporter gene under the control of the IFN-β promoter and was optimized, miniaturized and demonstrated suitable for HTS as robust Z’ factor scores of >0.6 were consistently achieved. A diversity screening set of 15,667 small molecules was assayed and two novel hit compounds validated that specifically inhibit the IFN- induction pathway. We demonstrate that one of these compounds acts at, or upstream of IRF3 phosphorylation. A second cell-based assay to detect activation of the IFN- signaling (Jak-Stat) pathway via an eGFP reporter gene under the control of an ISRE containing MxA promoter also performed well (robust Z’ factor = >0.7), and may therefore be similarly used to identify small molecules that modulate the IFN-signaling pathway.
Citation
Gage , Z O , Vasou , A , Gray , D , Randall , R E & Adamson , C S 2016 , ' Identification of novel inhibitors of the type I interferon induction pathway using cell-based high-throughput screening ' , Journal of Biomolecular Screening , vol. 21 , no. 9 , pp. 978-988 . https://doi.org/10.1177/1087057116656314
Publication
Journal of Biomolecular Screening
Status
Peer reviewed
DOI
https://doi.org/10.1177/1087057116656314
ISSN
1087-0571
Type
Journal article
Rights
This article is distributed under the terms of the Creative Commons Attribution 3.0 License (http://www.creativecommons.org/licenses/by/3.0/) which permits any use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page (https://us.sagepub.com/en-us/nam/open-access-at-sage)
Collections
  • University of St Andrews Research
URI
http://hdl.handle.net/10023/9064

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