Evidence map›Paper›PMID 25889446›Full record

ArticleJournal of neuroinflammation2015

miR-146a suppresses cellular immune response during Japanese encephalitis virus JaOArS982 strain infection in human microglial cells.

Nikhil Sharma, Ruhi Verma, Kanhaiya Lal Kumawat, Anirban Basu, Sunit K Singh

Open access · goldAbstract read
In one paragraph

Article in Journal of neuroinflammation, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 74 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
74citing papers in PubMed, 2 pooled it
13.6field-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

74 citing papers in PubMed, 2 syntheses or guidelines pooled it, 115 citations in OpenAlex.

  1. The role of microRNAs in modulating SARS-CoV-2 infection in human cells: a systematic review.Infection, genetics and evolution : journal of molecular epidemiology and evolutionary genetics in infectious diseases · 2021
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  13. Cross Talk between MicroRNAs and Dengue Virus.The American journal of tropical medicine and hygiene · 2024
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  17. MiRNA-146a-A Key Player in Immunity and Diseases.International journal of molecular sciences · 2023
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  19. Article
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14 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

5 authors at 2 institutions in 1 country.

Nikhil SharmaLaboratory of Neurovirology and Inflammation Biology, CSIR-Centre for Cellular and Molecular Biology (CCMB), Uppal Road, 500007, Hyderabad, AP, India. nikhil@ccmb.res.in.
Ruhi VermaLaboratory of Neurovirology and Inflammation Biology, CSIR-Centre for Cellular and Molecular Biology (CCMB), Uppal Road, 500007, Hyderabad, AP, India. ruhiverma78@gmail.com.
Kanhaiya Lal KumawatNational Brain Research Centre, Haryana-122050, Manesar, Haryana, India. kanhaiya81@gmail.com.
Anirban BasuNational Brain Research Centre, Haryana-122050, Manesar, Haryana, India. anirban@nbrc.ac.in.
Sunit K SinghLaboratory of Neurovirology and Inflammation Biology, CSIR-Centre for Cellular and Molecular Biology (CCMB), Uppal Road, 500007, Hyderabad, AP, India. sunitsingh2000@gmail.com.
Centre for Cellular and Molecular Biology · INBanaras Hindu University · IN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundJapanese encephalitis virus (JEV) is the causative agent of Japanese encephalitis which is more prevalent in South and Southeast Asia. JEV is a neurotropic virus which infiltrates into the brain through vascular endothelial cells. JEV infects neurons and microglial cells which causes neuronal damage and inflammation. However, JEV also evades the cellular immune response to survive in host cells. Viruses are known to modulate the expression of microRNAs, which in turn modulate cellular immune response by targeting expression of antiviral genes. The aim of this study is to understand the anti-inflammatory role of miR-146a during JEV infection, which facilitates immune evasion.

methodsHuman brain microglial cells (CHME3) were infected by JEV: JaOArS982 and P20778 strain, and expression of miR-146a were analyzed. Overexpression and knockdown studies of miR-146a were done to see the effect on NF-κB pathway and antiviral Jak-STAT pathway. Regulatory role of miR-146a on expression of interferon-stimulated genes was determined by real-time PCR and luciferase assays.

resultsJEV infection elevated the expression of miR-146a in JaOArS982 strain which caused downregulation of TRAF6, IRAK1, IRAK2, and STAT1 genes. Exogenous overexpression of miR-146a led to suppression of NF-κB activation and abrogation of Jak-STAT pathway upon JEV infection which led to downregulation of interferon-stimulated genes (IFIT-1 and IFIT-2) and facilitated viral replication. JEV infection initially upregulated cytokine production and activated STAT1 activity but STAT1 levels reduced at later time point, which led to the downregulation of interferon-stimulated genes.

conclusionUpregulation of miR-146a by JEV JaOArS982 strain leads to suppression of NF-κB activity and disruption of antiviral Jak-STAT signaling which helps the virus to evade the cellular immune response. This effect of JEV infection on miR-146a expression was found to be strain specific.

Indexed as

Cell Line, TransformedCytokinesEncephalitis Virus, JapaneseGene Expression Regulation, ViralHumansImmunity, CellularInterleukin-1 Receptor-Associated KinasesMicrogliaMicroRNAsNF-kappa BRNA, MessengerSTAT1 Transcription FactorTime FactorsTNF Receptor-Associated Factor 6CytokinesInterleukin-1 Receptor-Associated KinasesIRAK1 protein, humanIRAK3 protein, humanMicroRNAsMIRN146 microRNA, humanNF-kappa BRNA, MessengerSTAT1 Transcription FactorTNF Receptor-Associated Factor 6

Identifiers

PMID25889446
PMCPMC4355369
OpenAlexW2098671498

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.