Modulation of Stimulator of Interferon Genes (STING) Expression by Interferon-γ in Human Keratinocytes

Modulation of Stimulator of Interferon Genes (STING) Expression by Interferon-γ in Human... Infection of microbial pathogen triggers the innate immune system, and the induction of interferons (IFNs) play a vital role in host antiviral response. Stimulator of interferon genes (STING) was identified as a crucial regulator of the DNA sensing pathway, and activates both nuclear factor-κB and interferon regulatory factor 3 transcription pathways to evoke IFNs production. In this study, we studied the upregulation of STING mRNA expression, induced by IFN-γ in human keratinocytes (HaCaT). STING promoter assays clarified that a gamma-activated sequence (GAS), located at − 7 to − 15-bp, is required for IFN-γ-upregulated promoter activity. Furthermore, an electrophoretic mobility shift assay showed that signal transducers and activators of transcription 1 (STAT1) attach to the GAS motif on the human STING promoter region. This indicates that IFN-γ/Janus kinases/STAT1 signaling is essential for the STING upregulation in human keratinocytes. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Biochemical Genetics Springer Journals

Modulation of Stimulator of Interferon Genes (STING) Expression by Interferon-γ in Human Keratinocytes

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Publisher
Springer Journals
Copyright
Copyright © 2017 by Springer Science+Business Media, LLC, part of Springer Nature
Subject
Biomedicine; Human Genetics; Biochemistry, general; Zoology; Medical Microbiology
ISSN
0006-2928
eISSN
1573-4927
D.O.I.
10.1007/s10528-017-9832-7
Publisher site
See Article on Publisher Site

Abstract

Infection of microbial pathogen triggers the innate immune system, and the induction of interferons (IFNs) play a vital role in host antiviral response. Stimulator of interferon genes (STING) was identified as a crucial regulator of the DNA sensing pathway, and activates both nuclear factor-κB and interferon regulatory factor 3 transcription pathways to evoke IFNs production. In this study, we studied the upregulation of STING mRNA expression, induced by IFN-γ in human keratinocytes (HaCaT). STING promoter assays clarified that a gamma-activated sequence (GAS), located at − 7 to − 15-bp, is required for IFN-γ-upregulated promoter activity. Furthermore, an electrophoretic mobility shift assay showed that signal transducers and activators of transcription 1 (STAT1) attach to the GAS motif on the human STING promoter region. This indicates that IFN-γ/Janus kinases/STAT1 signaling is essential for the STING upregulation in human keratinocytes.

Journal

Biochemical GeneticsSpringer Journals

Published: Nov 16, 2017

References

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