Evidence map›Paper›PMID 32366663›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2020

Positive epistasis between viral polymerase and the 3' untranslated region of its genome reveals the epidemiologic fitness of dengue virus.

Ayesa Syenina, Dhanasekaran Vijaykrishna, Esther Shuyi Gan, Hwee Cheng Tan, Milly M Choy, Tanamas Siriphanitchakorn, Colin Cheng, Subhash G Vasudevan, Eng Eong Ooi

Open access · hybridAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed
3.6field-weighted citation impact, top 6% 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

20 citing papers in PubMed, 27 citations in OpenAlex.

  1. Dengue virus infection.Nature reviews. Disease primers · 2026
    Review
  2. Article
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  5. Dengue and severe dengue.Clinical microbiology reviews · 2025
    Review
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  7. Review
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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

9 authors at 3 institutions in 2 countries.

Ayesa SyeninaProgram in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, 169857 Singapore.
Dhanasekaran VijaykrishnaDepartment of Microbiology, Biomedicine Discovery Institute, Monash University, Clayton, VIC 3800, Australia.ORCID 0000-0003-3293-6279
Esther Shuyi GanProgram in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, 169857 Singapore.
Hwee Cheng TanProgram in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, 169857 Singapore.
Milly M ChoyProgram in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, 169857 Singapore.
Tanamas SiriphanitchakornProgram in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, 169857 Singapore.
Colin ChengProgram in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, 169857 Singapore.ORCID 0000-0003-3560-072X
Subhash G VasudevanProgram in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, 169857 Singapore.
Eng Eong OoiProgram in Emerging Infectious Diseases, Duke-National University of Singapore Medical School, 169857 Singapore; engeong.ooi@duke-nus.edu.sg.ORCID 0000-0002-0520-1544
National University of Singapore · SGAustralian Regenerative Medicine Institute · AUSingHealth · SG

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Dengue virus (DENV) is a global health threat, causing repeated epidemics throughout the tropical world. While low herd immunity levels to any one of the four antigenic types of DENV predispose populations to outbreaks, viral genetic determinants that confer greater fitness for epidemic spread is an important but poorly understood contributor of dengue outbreaks. Here we report that positive epistasis between the coding and noncoding regions of the viral genome combined to elicit an epidemiologic fitness phenotype associated with the 1994 DENV2 outbreak in Puerto Rico. We found that five amino acid substitutions in the NS5 protein reduced viral genomic RNA (gRNA) replication rate to achieve a more favorable and relatively more abundant subgenomic flavivirus RNA (sfRNA), a byproduct of host 5'-3' exoribonuclease activity. The resulting increase in sfRNA relative to gRNA levels not only inhibited type I interferon (IFN) expression in infected cells through a previously described mechanism, but also enabled sfRNA to compete with gRNA for packaging into infectious particles. We suggest that delivery of sfRNA to new susceptible cells to inhibit type I IFN induction before gRNA replication and without the need for further de novo sfRNA synthesis could form a "preemptive strike" strategy against DENV.

Indexed as

3' Untranslated RegionsA549 CellsDengueDengue VirusEpistasis, GeneticExoribonucleasesGene Knockout TechniquesGenome, ViralHEK293 CellsHost-Pathogen InteractionsHumansInterferon Type IMicrotubule-Associated ProteinsMutationPuerto RicoViral Nonstructural Proteins3' Untranslated RegionsExoribonucleasesInterferon Type IMicrotubule-Associated ProteinsNS5 protein, dengue virusViral Nonstructural Proteinsdengueepidemiologic fitnesssfRNA packaging

Identifiers

PMID32366663
PMCPMC7245076
OpenAlexW3023818142

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.