Evidence map›Paper›PMID 21471243›Full record

ArticleJournal of virology2011

A pre-immediate-early role for tegument ICP0 in the proteasome-dependent entry of herpes simplex virus.

Mark G Delboy, Anthony V Nicola

Open access · greenAbstract read
In one paragraph

Article in Journal of virology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 27 papers.

0numbers the graph read from it
0cells of the map it votes in
27citing papers in PubMed
2.8field-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

27 citing papers in PubMed, 41 citations in OpenAlex.

  1. Review
  2. Oncolytic HSV and cancer drug interactions: Current clinical status and future directions.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  3. Article
  4. Review
  5. Article
  6. E3 ubiquitin ligase Mindbomb 1 facilitates nuclear delivery of adenovirus genomes.Proceedings of the National Academy of Sciences of the United States of America · 2021
    Article
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  15. Review
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  18. Bortezomib-induced unfolded protein response increases oncolytic HSV-1 replication resulting in synergistic antitumor effects.Clinical cancer research : an official journal of the American Association for Cancer Research · 2014
    Article
  19. 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

2 authors at 1 institution in 1 country.

Mark G DelboyDepartment of Microbiology and Immunology, Virginia Commonwealth University, School of Medicine, Richmond, Virginia 23298-0678, USA.
Anthony V Nicola
Virginia Commonwealth University · US

Funding

Tegument ICP0 and HSV EntryR21AI083850 · NIAID · WASHINGTON STATE UNIVERSITY · PI NICOLA, ANTHONY V · 2009 to 2010
$399k
NIAID NIH HHS AI-083850NIAID NIH HHS R21 AI083850
6 · The paper itself

Abstract

Herpes simplex virus (HSV) entry requires host cell 26S proteasomal degradation activity at a postpenetration step. When expressed in the infected cell, the HSV immediate-early protein ICP0 has E3 ubiquitin ligase activity and interacts with the proteasome. The cell is first exposed to ICP0 during viral entry, since ICP0 is a component of the inner tegument layer of the virion. The function of tegument ICP0 is unknown. Deletion of ICP0 or mutations in the N-terminal RING finger domain of ICP0 results in the absence of ICP0 from the tegument. We show here that these mutations negatively influenced the targeting of incoming capsids to the nucleus. Inhibitors of the chymotrypsin-like activity of the proteasome the blocked entry of virions containing tegument ICP0, including ICP0 mutants that are defective in USP7 binding. However, ICP0-deficient virions were not blocked by proteasomal inhibitors and entered cells via a proteasome-independent mechanism. ICP0 appeared to play a postpenetration role in cells that supported either endocytosis or nonendosomal entry pathways for HSV. The results suggest that ICP0 mutant virions are defective upstream of viral gene expression at a pre-immediate-early step in infection. We propose that proteasome-mediated degradation of a virion or host protein is regulated by ICP0 to allow efficient delivery of entering HSV capsids to the nuclear periphery.

Indexed as

Virus InternalizationAnimalsCapsidCell LineChlorocebus aethiopsCHO CellsCricetinaeCricetulusHerpesvirus 1, HumanHumansImmediate-Early ProteinsProteasome Endopeptidase ComplexUbiquitin-Protein LigasesVero CellsVirionImmediate-Early ProteinsProteasome Endopeptidase ComplexUbiquitin-Protein LigasesVmw110 protein, Human herpesvirus 1

Identifiers

PMID21471243
PMCPMC3126318
OpenAlexW2087122347

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.