Astrocyte Control of Zika Infection Is Independent of Interferon Type I and Type III Expression

Das, Mithun, Smith, Monique L., Furihata, Tomomi, Sarker, Subir, O’shea, Ross, and Helbig, Karla J. (2022) Astrocyte Control of Zika Infection Is Independent of Interferon Type I and Type III Expression. Biology, 11 (1). 143.

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Zika virus (ZIKV) is a pathogenic neurotropic virus that infects the central nervous system (CNS) and results in various neurological complications. Astrocytes are the dominant CNS cell producer of the antiviral cytokine IFN-β, however little is known about the factors involved in their ability to mediate viral infection control. Recent studies have displayed differential responses in astrocytes to ZIKV infection, and this study sought to elucidate astrocyte cell-specific responses to ZIKV using a variety of cell models infected with either the African (MR766) or Asian (PRVABC59) ZIKV strains. Expression levels of pro-inflammatory (TNF-α and IL-1β) and inflammatory (IL-8) cytokines following viral infection were low and mostly comparable within the ZIKV-resistant and ZIKV-susceptible astrocyte models, with better control of proinflammatory cytokines displayed in resistant astrocyte cells, synchronising with the viral infection level at specific timepoints. Astrocyte cell lines displaying ZIKV-resistance also demonstrated early upregulation of multiple antiviral genes compared with susceptible astrocytes. Interestingly, pre-stimulation of ZIKV-susceptible astrocytes with either poly(I:C) or poly(dA:dT) showed efficient protection against ZIKV compared with pre-stimulation with either recombinant IFN-β or IFN-λ, perhaps indicating that a more diverse antiviral gene expression is necessary for astrocyte control of ZIKV, and this is driven in part through interferon-independent mechanisms.

Item ID: 79810
Item Type: Article (Research - C1)
ISSN: 2079-7737
Keywords: Antiviral, Astrocyte, Host response, Interferon, Zika
Copyright Information: © 2022 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (
Date Deposited: 17 Aug 2023 03:30
FoR Codes: 32 BIOMEDICAL AND CLINICAL SCIENCES > 3207 Medical microbiology > 320705 Medical virology @ 100%
SEO Codes: 20 HEALTH > 2004 Public health (excl. specific population health) > 200408 Injury prevention and control @ 100%
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