Evidence map›Paper›PMID 34908444›Full record

ArticleJournal of virology2022

MicroRNA 122 Affects both the Initiation and the Maintenance of Hepatitis C Virus Infections.

Mamata Panigrahi, Patricia A Thibault, Joyce A Wilson

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 13% 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

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

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  20. Current Advances in RNA Therapeutics for Human Diseases.International journal of molecular sciences · 2022
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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

3 authors at 1 institution in 1 country.

Mamata PanigrahiDepartment of Biochemistry, Microbiology, and Immunology, University of Saskatchewangrid.25152.31, Saskatoon, Saskatchewan, Canada.
Patricia A ThibaultDivision of Neurology, Department of Medicine, University of Saskatchewangrid.25152.31, Saskatoon, Saskatchewan, Canada.
Joyce A WilsonDepartment of Biochemistry, Microbiology, and Immunology, University of Saskatchewangrid.25152.31, Saskatoon, Saskatchewan, Canada.ORCID 0000-0002-5051-3088
University of Saskatchewan · CA

Funding

CIHR MOP- 133458
6 · The paper itself

Abstract

A liver-specific microRNA, miR-122, anneals to the hepatitis C virus (HCV) genomic 5' terminus and is essential for virus replication in cell culture. However, bicistronic HCV replicons and full-length RNAs with specific mutations in the 5' untranslated region (UTR) can replicate, albeit to low levels, without miR-122. In this study, we have identified that HCV RNAs lacking the structural gene region or having encephalomyocarditis virus internal ribosomal entry site (EMCV IRES)-regulated translation had reduced requirements for miR-122. In addition, we found that a smaller proportion of cells supported miR-122-independent replication compared a population of cells supporting miR-122-dependent replication, while viral protein levels per positive cell were similar. Further, the proportion of cells supporting miR-122-independent replication increased with the amount of viral RNA delivered, suggesting that establishment of miR-122-independent replication in a cell is affected by the amount of viral RNA delivered. HCV RNAs replicating independently of miR-122 were not affected by supplementation with miR-122, suggesting that miR-122 is not essential for maintenance of an miR-122-independent HCV infection. However, miR-122 supplementation had a small positive impact on miR-122-dependent replication, suggesting a minor role in enhancing ongoing virus RNA accumulation. We suggest that miR-122 functions primarily to initiate an HCV infection but has a minor influence on its maintenance, and we present a model in which miR-122 is required for replication complex formation at the beginning of an infection and also supports new replication complex formation during ongoing infection and after infected cell division.

Indexed as

Virus ReplicationCell LineEncephalomyocarditis virusGenome, ViralHepacivirusHumansInternal Ribosome Entry SitesMicroRNAsMutationRNA StabilityRNA, ViralViral Nonstructural ProteinsViral Replication CompartmentsViral Structural ProteinsInternal Ribosome Entry SitesMicroRNAsMIRN122 microRNA, humanRNA, ViralViral Nonstructural ProteinsViral Structural Proteins5′ untranslated regionhepatitis C virusmicroRNA-122miR-122miR-122-independent replicationreplicationtranslation

Identifiers

PMID34908444
PMCPMC8865533
OpenAlexW4213440197

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.