Evidence map›Paper›PMID 33439114›Full record

ArticleMicrobial genomics2021

Quantitative analysis of the splice variants expressed by the major hepatitis B virus genotypes.

Chun Shen Lim, Vitina Sozzi, Margaret Littlejohn, Lilly K W Yuen, Nadia Warner, Brigid Betz-Stablein, Fabio Luciani, Peter A Revill, Chris M Brown

Open access · goldAbstract read
In one paragraph

Article in Microbial genomics, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 21 papers.

0numbers the graph read from it
0cells of the map it votes in
21citing papers in PubMed
3.5field-weighted citation impact, top 7% 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

21 citing papers in PubMed, 29 citations in OpenAlex.

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  8. TheJournal of virology · 2024
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  19. [Expert consensus on measurement and clinical application of serum HBV RNA in patients with chronic HBV infection].Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology · 2022
    Article
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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 4 institutions in 2 countries.

Chun Shen LimDepartment of Biochemistry, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand.
Vitina SozziVictorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Margaret LittlejohnVictorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Lilly K W YuenVictorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Nadia WarnerVictorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Brigid Betz-StableinSystems Medicine, School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia.
Fabio LucianiSystems Medicine, School of Medical Sciences, Faculty of Medicine, University of New South Wales, Sydney, New South Wales, Australia.
Peter A RevillVictorian Infectious Diseases Reference Laboratory, Royal Melbourne Hospital at the Peter Doherty Institute for Infection and Immunity, Melbourne, Victoria, Australia.
Chris M BrownDepartment of Biochemistry, School of Biomedical Sciences, University of Otago, Dunedin, New Zealand.
The Royal Melbourne Hospital · AUUniversity of Otago · NZThe University of Queensland · AUUNSW Sydney · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Hepatitis B virus (HBV) is a major human pathogen that causes liver diseases. The main HBV RNAs are unspliced transcripts that encode the key viral proteins. Recent studies have shown that some of the HBV spliced transcript isoforms are predictive of liver cancer, yet the roles of these spliced transcripts remain elusive. Furthermore, there are nine major HBV genotypes common in different regions of the world, these genotypes may express different spliced transcript isoforms. To systematically study the HBV splice variants, we transfected human hepatoma cells, Huh7, with four HBV genotypes (A2, B2, C2 and D3), followed by deep RNA-sequencing. We found that 13-28 % of HBV RNAs were splice variants, which were reproducibly detected across independent biological replicates. These comprised 6 novel and 10 previously identified splice variants. In particular, a novel, singly spliced transcript was detected in genotypes A2 and D3 at high levels. The biological relevance of these splice variants was supported by their identification in HBV-positive liver biopsy and serum samples, and in HBV-infected primary human hepatocytes. Interestingly the levels of HBV splice variants varied across the genotypes, but the spliced pregenomic RNA SP1 and SP9 were the two most abundant splice variants. Counterintuitively, these singly spliced SP1 and SP9 variants had a suboptimal 5' splice site, supporting the idea that splicing of HBV RNAs is tightly controlled by the viral post-transcriptional regulatory RNA element.

Indexed as

Cell LineGene Expression ProfilingGene Expression Regulation, ViralGenotypeHepatitis B virusHep G2 CellsHigh-Throughput Nucleotide SequencingHumansRNA SplicingSequence Analysis, RNAViral ProteinsViral ProteinsHBVpgRNAshotgun sequencingtranscriptome assembly

Identifiers

PMID33439114
PMCPMC8115900
OpenAlexW3120681874

What OpenQuestion holds

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LicenceCC BY
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Registered trials

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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.