Evidence map›Paper›PMID 23269812›Full record

ArticleJournal of virology2013

Low oxygen tension enhances hepatitis C virus replication.

N Vassilaki, K I Kalliampakou, I Kotta-Loizou, C Befani, P Liakos, G Simos, A F Mentis, A Kalliaropoulos, P P Doumba, D Smirlis and 8 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of virology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 34 papers.

0numbers the graph read from it
0cells of the map it votes in
34citing papers in PubMed
1.8field-weighted citation impact, top 15% 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

34 citing papers in PubMed, 57 citations in OpenAlex.

  1. Review
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  16. Review
  17. Review
  18. Review
  19. Nocturnal oxygen therapy as an option for early COVID-19.International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases · 2020
    Article
  20. Oxygen: viral friend or foe?Virology journal · 2020
    Review
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

18 authors at 5 institutions in 3 countries.

N VassilakiMolecular Virology, Hellenic Pasteur Institute (HPI), Athens, Greece. nikiv@pasteur.gr
K I Kalliampakou
I Kotta-Loizou
C Befani
P Liakos
G Simos
A F Mentis
A Kalliaropoulos
P P Doumba
D Smirlis
P Foka
O Bauhofer
M Poenisch
M P Windisch
M E Lee
J Koskinas
R Bartenschlager
P Mavromara
Pasteur Hellenic Institute · GRHeidelberg University · DEUniversity of Thessaly · GRHippocration General Hospital · GRInstitut Pasteur Korea · KR

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Low oxygen tension exerts a significant effect on the replication of several DNA and RNA viruses in cultured cells. In vitro propagation of hepatitis C virus (HCV) has thus far been studied under atmospheric oxygen levels despite the fact that the liver tissue microenvironment is hypoxic. In this study, we investigated the efficiency of HCV production in actively dividing or differentiating human hepatoma cells cultured under low or atmospheric oxygen tensions. By using both HCV replicons and infection-based assays, low oxygen was found to enhance HCV RNA replication whereas virus entry and RNA translation were not affected. Hypoxia signaling pathway-focused DNA microarray and real-time quantitative reverse transcription-PCR (qRT-PCR) analyses revealed an upregulation of genes related to hypoxic stress, glycolytic metabolism, cell growth, and proliferation when cells were kept under low (3% [vol/vol]) oxygen tension, likely reflecting cell adaptation to anaerobic conditions. Interestingly, hypoxia-mediated enhancement of HCV replication correlated directly with the increase in anaerobic glycolysis and creatine kinase B (CKB) activity that leads to elevated ATP production. Surprisingly, activation of hypoxia-inducible factor alpha (HIF-α) was not involved in the elevation of HCV replication. Instead, a number of oncogenes known to be associated with glycolysis were upregulated and evidence that these oncogenes contribute to hypoxia-mediated enhancement of HCV replication was obtained. Finally, in liver biopsy specimens of HCV-infected patients, the levels of hypoxia and anaerobic metabolism markers correlated with HCV RNA levels. These results provide new insights into the impact of oxygen tension on the intricate HCV-host cell interaction.

Indexed as

Cell HypoxiaGlycolysisVirus ReplicationCell LineCell ProliferationCreatine KinaseGenome, ViralHepacivirusHumansHypoxia-Inducible Factor 1, alpha SubunitIsoenzymesKinesinsLactate Dehydrogenase 5LiverLiver NeoplasmsL-Lactate DehydrogenaseCreatine KinaseHypoxia-Inducible Factor 1, alpha SubunitIsoenzymesKIF2A protein, humanKinesinsLactate Dehydrogenase 5L-Lactate DehydrogenaseOxygenRNA, MessengerRNA, Small InterferingRNA, ViralVascular Endothelial Growth Factor A

Identifiers

PMID23269812
PMCPMC3571389
OpenAlexW2153310042

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.