Evidence map›Paper›PMID 25300488›Full record

ArticleNucleic acids research2014

Requirement of CRTC1 coactivator for hepatitis B virus transcription.

Hei-Man Vincent Tang, Wei-Wei Gao, Chi-Ping Chan, Yun Cheng, Vidyanath Chaudhary, Jian-Jun Deng, Kit-San Yuen, Chun-Ming Wong, Irene Oi-Lin Ng, Kin-Hang Kok and 2 more

Open access · goldAbstract read
In one paragraph

Article in Nucleic acids research, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
1.9field-weighted citation impact, top 14% 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

19 citing papers in PubMed, 29 citations in OpenAlex.

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  11. Mapping the Interactions of HBV cccDNA with Host Factors.International journal of molecular sciences · 2019
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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

12 authors at 1 institution in 2 countries.

Hei-Man Vincent TangDepartment of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
Wei-Wei GaoDepartment of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
Chi-Ping ChanDepartment of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
Yun ChengDepartment of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
Vidyanath ChaudharyDepartment of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
Jian-Jun DengDepartment of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
Kit-San YuenDepartment of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong.
Chun-Ming WongState Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong Department of Pathology, The University of Hong Kong, Pokfulam, Hong Kong.
Irene Oi-Lin NgState Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong Department of Pathology, The University of Hong Kong, Pokfulam, Hong Kong.
Kin-Hang KokDepartment of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong Department of Microbiology, The University of Hong Kong, Pokfulam, Hong Kong.
Jie ZhouDepartment of Microbiology, The University of Hong Kong, Pokfulam, Hong Kong.
Dong-Yan JinDepartment of Biochemistry, The University of Hong Kong, Pokfulam, Hong Kong State Key Laboratory for Liver Research, The University of Hong Kong, Pokfulam, Hong Kong dyjin@hku.hk.
University of Hong Kong · HK

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Transcription of hepatitis B virus (HBV) from the covalently closed circular DNA (cccDNA) template is essential for its replication. Suppressing the level and transcriptional activity of cccDNA might have anti-HBV effect. Although cellular transcription factors, such as CREB, which mediate HBV transcription, have been well described, transcriptional coactivators that facilitate this process are incompletely understood. In this study we showed that CREB-regulated transcriptional coactivator 1 (CRTC1) is required for HBV transcription and replication. The steady-state levels of CRTC1 protein were elevated in HBV-positive hepatoma cells and liver tissues. Ectopic expression of CRTC1 or its homolog CRTC2 or CRTC3 in hepatoma cells stimulated the activity of the preS2/S promoter of HBV, whereas overexpression of a dominant inactive form of CRTC1 inhibited HBV transcription. CRTC1 interacts with CREB and they are mutually required for the recruitment to the preS2/S promoter on cccDNA and for the activation of HBV transcription. Accumulation of pregenomic RNA (pgRNA) and cccDNA was observed when CRTC1 or its homologs were overexpressed, whereas the levels of pgRNA, cccDNA and secreted HBsAg were diminished when CRTC1 was compromised. In addition, HBV transactivator protein HBx stabilized CRTC1 and promoted its activity on HBV transcription. Our work reveals an essential role of CRTC1 coactivator in facilitating and supporting HBV transcription and replication.

Indexed as

Gene Expression Regulation, ViralTranscriptional ActivationCell Line, TumorCyclic AMP Response Element-Binding ProteinHepatitis B virusHumansTrans-ActivatorsTranscription FactorsViral Regulatory and Accessory ProteinsVirus ReplicationCRTC1 protein, humanCyclic AMP Response Element-Binding Proteinhepatitis B virus X proteinTrans-ActivatorsTranscription FactorsViral Regulatory and Accessory Proteins

Identifiers

PMID25300488
PMCPMC4227773
OpenAlexW2119369233

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.