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Analysis of Global Transcriptome Change in Mouse Embryonic Fibroblasts After dsDNA and dsRNA Viral Mimic Stimulation
Stockholm University, Faculty of Science, Department of Molecular Biosciences, The Wenner-Gren Institute. New York University Abu Dhabi (NYUAD), United Arab Emirates.
Number of Authors: 32019 (English)In: Frontiers in Immunology, E-ISSN 1664-3224, Vol. 10, article id 836Article in journal (Refereed) Published
Abstract [en]

The activation of innate immunity by viral nucleic acids present in the cytoplasm plays an essential role in controlling viral infection in both immune and non-immune cells. The dsDNA and dsRNA viral mimics can stimulate the cytosolic nucleic acids sensors and activate the antiviral innate immunity. In this study, taking advantage of dsDNA and dsRNA viral mimics, we investigated the global transcriptome changes after the antiviral immunity activation in mouse embryonic fibroblasts. Results from our data identified a positive feedback up-regulation of sensors (e.g., Tlr2, Tlr3, Ddx58, cGAS), transducers (e.g., Traf2, Tbk1) and transcription factors (e.g., Irf7, Jun, Stat1, Stat2) in multiple pathways involved in detecting viral or microbial infections upon viral mimic stimulation. A group of genes involved in DNA damage response and DNA repair such as Parp9, Dtx3l, Rad52 were also up-regulated, implying the involvement of these genes in antiviral immunity. Molecular function analysis further showed that groups of helicase genes (e.g., Dhx58, Helz2), nuclease genes (e.g., Dnase1l3, Rsph10b), methyltransferase genes (e.g., histone methyltransferase Prdm9, Setdb2; RNA methyltransferase Mettl3, Mttl14), and protein ubiquitin-ligase genes (e.g., Trim genes and Rnf genes) were up-regulated upon antiviral immunity activation. In contrast, viral mimic stimulation down-regulated genes involved in a broad range of general biological processes (e.g., cell division, metabolism), cellular components (e.g., mitochondria and ribosome), and molecular functions (e.g., cell-cell adhesion, microtubule binding). In summary, our study provides valuable information about the global transcriptome changes upon antiviral immunity activation. The identification of novel groups of genes up-regulated upon antiviral immunity activation serves as useful resource for mining new antiviral sensors and effectors.

Place, publisher, year, edition, pages
2019. Vol. 10, article id 836
Keywords [en]
transcriptional profiling, genome-wide analysis, viral mimic stimulation, innate immunity, mouse embryonic fibroblasts
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-169125DOI: 10.3389/fimmu.2019.00836ISI: 000465045500001PubMedID: 31057555OAI: oai:DiVA.org:su-169125DiVA, id: diva2:1319385
Available from: 2019-05-31 Created: 2019-05-31 Last updated: 2024-01-17Bibliographically approved

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Percipalle, Piergiorgio

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