Evidence map›Paper›PMID 31213553›Full record

ArticlemBio2019

Mouse Norovirus Infection Arrests Host Cell Translation Uncoupled from the Stress Granule-PKR-eIF2α Axis.

Svenja Fritzlar, Turgut E Aktepe, Yi-Wei Chao, Nathan D Kenney, Michael R McAllaster, Craig B Wilen, Peter A White, Jason M Mackenzie

Open access · goldAbstract read
In one paragraph

Article in mBio, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
4.2field-weighted citation impact, top 5% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

37 citing papers in PubMed, 51 citations in OpenAlex.

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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors at 4 institutions in 2 countries.

Svenja Fritzlar *Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Turgut E Aktepe *Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Yi-Wei ChaoDepartment of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Nathan D KenneyDepartment of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Michael R McAllasterDepartment of Pathology and Immunology, Washington University School of Medicine, St. Louis, Missouri, USA.
Craig B WilenDepartments of Laboratory Medicine and Immunobiology, Yale School of Medicine, New Haven, Connecticut, USA.
Peter A WhiteSchool of Biotechnology and Biomolecular Sciences, The University of New South Wales, Sydney, New South Wales, Australia.ORCID 0000-0002-6046-9631
Jason M Mackenzie *Department of Microbiology and Immunology, University of Melbourne at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia jason.mackenzie@unimelb.edu.au.ORCID 0000-0001-6613-8350
The University of Melbourne · AUUNSW Sydney · AUWashington University in St. Louis · USYale University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The integrated stress response (ISR) is a cellular response system activated upon different types of stresses, including viral infection, to restore cellular homeostasis. However, many viruses manipulate this response for their own advantage. In this study, we investigated the association between murine norovirus (MNV) infection and the ISR and demonstrate that MNV regulates the ISR by activating and recruiting key ISR host factors. We observed that during MNV infection, there is a progressive increase in phosphorylated eukaryotic initiation factor 2α (p-eIF2α), resulting in the suppression of host translation, and yet MNV translation still progresses under these conditions. Interestingly, the shutoff of host translation also impacts the translation of key signaling cytokines such as beta interferon, interleukin-6, and tumor necrosis factor alpha. Our subsequent analyses revealed that the phosphorylation of eIF2α was mediated via protein kinase R (PKR), but further investigation revealed that PKR activation, phosphorylation of eIF2α, and translational arrest were uncoupled during infection. We further observed that stress granules (SGs) are not induced during MNV infection and that MNV can restrict SG nucleation and formation. We observed that MNV recruited the key SG nucleating protein G3BP1 to its replication sites and intriguingly the silencing of G3BP1 negatively impacts MNV replication. Thus, it appears that MNV utilizes G3BP1 to enhance replication but equally to prevent SG formation, suggesting an anti-MNV property of SGs. Overall, this study highlights MNV manipulation of SGs, PKR, and translational control to regulate cytokine translation and to promote viral replication.

Indexed as

Immune EvasionAnimalsCaliciviridae InfectionsCytoplasmic GranulesDNA HelicaseseIF-2 KinaseEukaryotic Initiation Factor-2Host-Pathogen InteractionsImmunity, InnateMicePhosphorylationPoly-ADP-Ribose Binding ProteinsProtein BiosynthesisRNA HelicasesRNA Recognition Motif ProteinsViral ProteinsDNA HelicaseseIF-2 KinaseEukaryotic Initiation Factor-2G3bp1 protein, mousePoly-ADP-Ribose Binding Proteinsprotein kinase R, mouseRNA HelicasesRNA Recognition Motif ProteinsViral ProteinseIF2αintegrated stress responsemouse norovirusprotein kinase Rprotein translationstress granules

Identifiers

PMID31213553
PMCPMC6581855
OpenAlexW2951334271

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.