Evidence map›Paper›PMID 30142426›Full record

ArticleJournal of hepatology2018

Hepatitis B virus genome recycling and de novo secondary infection events maintain stable cccDNA levels.

Chunkyu Ko, Anindita Chakraborty, Wen-Min Chou, Julia Hasreiter, Jochen M Wettengel, Daniela Stadler, Romina Bester, Theresa Asen, Ke Zhang, Karin Wisskirchen and 3 more

Registry-linked trialOpen access · greenAbstract read
In one paragraph

Article in Journal of hepatology, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05965388 (Predictive Value of HBV pgRNA on Long-term Outcomes in Hepatitis B Patients Treated With Antiviral Therapy), which is not on this map. Cited by 142 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
142citing papers in PubMed, 1 pooled it
16.2field-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.

NCT05965388 not yet recruitingnot on this mapstarted 2023, after this paper: background citation

Predictive Value of HBV pgRNA on Long-term Outcomes in Hepatitis B Patients Treated With Antiviral Therapy

TypeobservationalSponsorWen-hong ZhangRan2023 to 2029Enrolled5,000ConditionsHBV, HCCArmsnucleoside analogues or interferon
3 · Its place in the literature

Who cites it

142 citing papers in PubMed, 1 synthesis or guideline pooled it, 223 citations in OpenAlex.

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  20. NTCP ubiquitination enables HBV infection.JHEP reports : innovation in hepatology · 2025
    Article

82 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

13 authors at 5 institutions in 3 countries.

Chunkyu KoInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany.
Anindita ChakrabortyInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany; Technische Universität München, Institute for Advanced Study, Munich, Germany.
Wen-Min ChouInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany.
Julia HasreiterInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany.
Jochen M WettengelInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany.
Daniela StadlerInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany.
Romina BesterInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany.
Theresa AsenInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany.
Ke ZhangInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany.
Karin WisskirchenInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany.
Jane A McKeatingTechnische Universität München, Institute for Advanced Study, Munich, Germany; Nuffield Department of Medicine, University of Oxford, Oxford, United Kingdom.
Wang-Shick RyuDepartment of Biochemistry, Yonsei University, Seoul, Republic of Korea.
Ulrike ProtzerInstitute of Virology, Technische Universität München/Helmholtz Zentrum München, Munich, Germany; Technische Universität München, Institute for Advanced Study, Munich, Germany; German Center for Infection Research (DZIF), Munich partner site, Munich, Germany. Electronic address: protzer@tum.de.
Helmholtz Zentrum München · DEGerman Center for Infection Research · DETechnical University of Munich · DEUniversity of Oxford · GBYonsei University · KR

Funding

Medical Research Council G0400802Medical Research Council G0801976Medical Research Council G1100247Medical Research Council MC_PC_16056Medical Research Council MR/K01532X/1Medical Research Council MR/R022011/1Wellcome Trust 200838Wellcome Trust 200838/Z/16/Z
6 · The paper itself

Abstract

BACKGROUND &

aimsSeveral steps in the HBV life cycle remain obscure because of a lack of robust in vitro infection models. These steps include particle entry, formation and maintenance of covalently closed circular (ccc) DNA, kinetics of gene expression and viral transmission routes. This study aimed to investigate infection kinetics and cccDNA dynamics during long-term culture.

methodsWe selected a highly permissive HepG2-NTCP-K7 cell clone engineered to express sodium taurocholate co-transporting polypeptide (NTCP) that supports the full HBV life cycle. We characterized the replication kinetics and dynamics of HBV over six weeks of infection.

resultsHBV infection kinetics showed a slow infection process. Nuclear cccDNA was only detected 24 h post-infection and increased until 3 days post-infection (dpi). Viral RNAs increased from 3 dpi reaching a plateau at 6 dpi. HBV protein levels followed similar kinetics with HBx levels reaching a plateau first. cccDNA levels modestly increased throughout the 45-day study period with 5-12 copies per infected cell. Newly produced relaxed circular DNA within capsids was reimported into the nucleus and replenished the cccDNA pool. In addition to intracellular recycling of HBV genomes, secondary de novo infection events resulted in cccDNA formation. Inhibition of relaxed circular DNA formation by nucleoside analogue treatment of infected cells enabled us to measure cccDNA dynamics. HBV cccDNA decayed slowly with a half-life of about 40 days.

conclusionsAfter a slow infection process, HBV maintains a stable cccDNA pool by intracellular recycling of HBV genomes and via secondary infection. Our results provide important insights into the dynamics of HBV infection and support the future design and evaluation of new antiviral agents. LAY SUMMARY: Using a unique hepatocellular model system designed to support viral growth, we demonstrate that hepatitis B virus (HBV) has remarkably slow infection kinetics. Establishment of the episomal transcription template and the persistent form of the virus, so called covalently closed circular DNA, as well as viral transcription and protein expression all take a long time. Once established, HBV maintains a stable pool of covalently closed circular DNA via intracellular recycling of HBV genomes and through infection of naïve cells by newly formed virions.

Indexed as

CoinfectionDimethyl SulfoxideDNA, CircularDNA, ViralGenome, ViralHalf-LifeHepatitis BHepatitis B virusHep G2 CellsHumansOrganic Anion Transporters, Sodium-DependentPolyethylene GlycolsRNA, ViralSymportersVirus ReplicationDimethyl SulfoxideDNA, CircularDNA, ViralOrganic Anion Transporters, Sodium-DependentPolyethylene GlycolsRNA, Viralsodium-bile acid cotransporterSymporterscccDNAHBVHepatitis B virusIntracellular recyclingNTCPReplenishmentTransmissionViral spread

Identifiers

PMID30142426
PMCPMC7611400
OpenAlexW2888601619

What OpenQuestion holds

Textmetadata
LicenceTDM
Read underepoch 390

Registered trials

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.