Evidence map›Paper›PMID 28484023›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2017

Coronavirus nonstructural protein 15 mediates evasion of dsRNA sensors and limits apoptosis in macrophages.

Xufang Deng, Matthew Hackbart, Robert C Mettelman, Amornrat O'Brien, Anna M Mielech, Guanghui Yi, C Cheng Kao, Susan C Baker

Open access · bronzeAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 241 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
241citing papers in PubMed, 1 pooled it
14.7field-weighted citation impact, top 1% 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

241 citing papers in PubMed, 1 synthesis or guideline pooled it, 405 citations in OpenAlex.

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  10. Dynamic metabolic modelling of ATP allocation during viral infection.Journal of the Royal Society, Interface · 2026
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181 more citing papers are in PubMed but not listed here.

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 2 institutions in 1 country.

Xufang DengDepartment of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153.
Matthew HackbartDepartment of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153.
Robert C MettelmanDepartment of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153.
Amornrat O'BrienDepartment of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153.
Anna M MielechDepartment of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153.
Guanghui YiDepartment of Molecular and Cellular Biochemistry, Indiana University, Bloomington, IN 47405.
C Cheng KaoDepartment of Molecular and Cellular Biochemistry, Indiana University, Bloomington, IN 47405.
Susan C BakerDepartment of Microbiology and Immunology, Stritch School of Medicine, Loyola University Chicago, Maywood, IL 60153; sbaker1@luc.edu.
Loyola University Chicago · USIndiana University Bloomington · US

Funding

Mechanisms of viral proteases in coronavirus replication and pathogenesisR01AI085089 · NIAID · LOYOLA UNIVERSITY CHICAGO · PI BAKER, SUSAN C., MESECAR, ANDREW D · 2010 to 2019
$6.8M
Experimental Immunology Training GrantT32AI007508 · NIAID · LOYOLA UNIVERSITY CHICAGO · PI KNIGHT, KATHERINE L. · 1997 to 2022
$4.0M
NIAID NIH HHS R01 AI085089NIAID NIH HHS T32 AI007508
6 · The paper itself

Abstract

Coronaviruses are positive-sense RNA viruses that generate double-stranded RNA (dsRNA) intermediates during replication, yet evade detection by host innate immune sensors. Here we report that coronavirus nonstructural protein 15 (nsp15), an endoribonuclease, is required for evasion of dsRNA sensors. We evaluated two independent nsp15 mutant mouse coronaviruses, designated N15m1 and N15m3, and found that these viruses replicated poorly and induced rapid cell death in mouse bone marrow-derived macrophages. Infection of macrophages with N15m1, which expresses an unstable nsp15, or N15m3, which expresses a catalysis-deficient nsp15, activated MDA5, PKR, and the OAS/RNase L system, resulting in an early, robust induction of type I IFN, PKR-mediated apoptosis, and RNA degradation. Immunofluorescence imaging of nsp15 mutant virus-infected macrophages revealed significant dispersal of dsRNA early during infection, whereas in WT virus-infected cells, the majority of the dsRNA was associated with replication complexes. The loss of nsp15 activity also resulted in greatly attenuated disease in mice and stimulated a protective immune response. Taken together, our findings demonstrate that coronavirus nsp15 is critical for evasion of host dsRNA sensors in macrophages and reveal that modulating nsp15 stability and activity is a strategy for generating live-attenuated vaccines.

Indexed as

AnimalsApoptosisCell LineCoronavirusCoronavirus InfectionsCricetinaeEndoribonucleasesEnzyme ActivationImmunity, InnateInterferon-Induced Helicase, IFIH1Interferon Type IMacrophagesMiceRNA, Double-StrandedViral Nonstructural Proteins2-5A-dependent ribonucleaseEndoribonucleasesIfih1 protein, mouseInterferon-Induced Helicase, IFIH1Interferon Type Inonstructural protein, coronavirusRNA, Double-StrandedViral Nonstructural ProteinscoronavirusdsRNAendoribonucleaseinterferonnsp15

Identifiers

PMID28484023
PMCPMC5448190
OpenAlexW2612768906

What OpenQuestion holds

Textmetadata
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.