Evidence map›Paper›PMID 15452209›Full record

ArticleJournal of virology2004

Identification of an hnRNP A1-dependent splicing silencer in the human papillomavirus type 16 L1 coding region that prevents premature expression of the late L1 gene.

Xiaomin Zhao, Margaret Rush, Stefan Schwartz

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2004. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 44 papers.

0numbers the graph read from it
0cells of the map it votes in
44citing papers in PubMed
2.6field-weighted citation impact, top 10% 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

44 citing papers in PubMed, 79 citations in OpenAlex.

  1. Alternative splicing in the genome of HPV and its regulation.Frontiers in cellular and infection microbiology · 2024
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  17. Splicing and Polyadenylation of Human Papillomavirus Type 16 mRNAs.International journal of molecular sciences · 2017
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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

3 authors at 1 institution in 1 country.

Xiaomin ZhaoDepartment of Medical Biochemistry and Microbiology, Biomedical Center, Uppsala University, Husargatan 3, Box 582, 751 23 Uppsala, Sweden.
Margaret Rush
Stefan Schwartz
Uppsala University · SE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

We have previously identified cis-acting RNA sequences in the human papillomavirus type 16 (HPV-16) L1 coding region which inhibit expression of L1 from eukaryotic expression plasmids. Here we have determined the function of one of these RNA elements, and we provide evidence that this RNA element is a splicing silencer which suppresses the use of the 3' splice site located immediately upstream of the L1 AUG. We also show that this splice site is inefficiently utilized as a result of a suboptimal polypyrimidine tract. Introduction of point mutations in the L1 coding region that altered the RNA sequence without affecting the L1 protein sequence resulted in the inactivation of the splicing silencer and induced splicing to the L1 3' splice site. These mutations also prevented the interaction of the RNA silencer with a 35-kDa cellular protein identified here as hnRNP A1. The splicing silencer in L1 inhibits splicing in vitro, and splicing can be restored by the addition of RNAs containing an hnRNP A1 binding site to the reaction, demonstrating that hnRNP A1 inhibits splicing of the late HPV-16 mRNAs through the splicing silencer sequence. While we show that one role of the splicing silencer is to determine the ratio between partially spliced L2/L1 mRNAs and spliced L1 mRNAs, we also demonstrate that it inhibits splicing from the major 5' splice site in the early region to the L1 3' splice site, thereby playing an essential role in preventing late gene expression at an early stage of the viral life cycle. We speculate that the activity of the splicing silencer and possibly the concentration of hnRNP A1 in the HPV-16-infected cell determines the ability of the virus to establish a persistent infection which remains undetected by the host immune surveillance.

Indexed as

Enhancer Elements, GeneticGene Expression Regulation, ViralGene SilencingRNA Splicing3' Untranslated RegionsBase SequenceCapsid ProteinsHeLa CellsHeterogeneous Nuclear Ribonucleoprotein A1Heterogeneous-Nuclear Ribonucleoprotein Group A-BHumansMolecular Sequence DataOncogene Proteins, ViralPapillomaviridaeRNA, Messenger3' Untranslated RegionsCapsid ProteinsHeterogeneous Nuclear Ribonucleoprotein A1Heterogeneous-Nuclear Ribonucleoprotein Group A-BHPV L1 protein, Human papillomavirusOncogene Proteins, ViralRNA, Messenger

Identifiers

PMID15452209
PMCPMC521837
OpenAlexW2133590194

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.