Evidence map›Paper›PMID 18715908›Full record

ArticleJournal of virology2008

Nef can enhance the infectivity of receptor-pseudotyped human immunodeficiency virus type 1 particles.

Massimo Pizzato, Elena Popova, Heinrich G Göttlinger

Abstract read
In one paragraph

Article in Journal of virology, 2008. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
1.4field-weighted citation impact, top 19% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 33 citations in OpenAlex.

  1. HIV Genome-Wide Protein Associations: a Review of 30 Years of Research.Microbiology and molecular biology reviews : MMBR · 2016
    Pooled it
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. S2 from equine infectious anemia virus is an infectivity factor which counteracts the retroviral inhibitors SERINC5 and SERINC3.Proceedings of the National Academy of Sciences of the United States of America · 2016
    Article
  9. Review
  10. Article
  11. Article
  12. The activity of Nef on HIV-1 infectivity.Frontiers in microbiology · 2014
    Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Cell entry of enveloped viruses.Advances in genetics · 2011
    Review
  18. MLV glycosylated-Gag is an infectivity factor that rescues Nef-deficient HIV-1.Proceedings of the National Academy of Sciences of the United States of America · 2010
    Article
  19. Article
  20. Article
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 2 institutions in 2 countries.

Massimo PizzatoDepartment of Infectious Diseases, Division of Medicine, Imperial College London, London, United Kingdom.
Elena Popova
Heinrich G Göttlinger
University of Massachusetts Chan Medical School · USImperial College London · GB

Funding

Molecular Biology of HIV-Gag ProteinsR37AI029873 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI GOTTLINGER, HEINRICH · 2004 to 2013
$5.1M
MOLECULAR BIOLOGY OF HIV GAG PROTEINSR01AI029873 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI GOTTLINGER, HEINRICH · 1990 to 2018
$3.7M
Nef Function in HIV InfectivityR01AI077412 · NIAID · UNIV OF MASSACHUSETTS MED SCH WORCESTER · PI GOTTLINGER, HEINRICH · 2008 to 2011
$1.5M
NIAID NIH HHS AI029873NIAID NIH HHS AI077412NIAID NIH HHS R01 AI029873NIAID NIH HHS R01 AI077412NIAID NIH HHS R37 AI029873
6 · The paper itself

Abstract

Nef is an accessory protein of human immunodeficiency virus type 1 (HIV-1) that enhances the infectivity of progeny virions when expressed in virus-producing cells. The requirement for Nef for optimal infectivity is, at least in part, determined by the envelope (Env) glycoprotein, because it can be eliminated by pseudotyping HIV-1 particles with pH-dependent Env proteins. To investigate the role of Env in the function of Nef, we have examined the effect of Nef on the infectivity of Env-deficient HIV-1 particles pseudotyped with viral receptors for cells expressing cognate Env proteins. We found that Nef significantly enhances the infectivity of CD4-chemokine receptor pseudotypes for cells expressing HIV-1 Env. Nef also increased the infectivity of HIV-1 particles pseudotyped with Tva, the receptor for subgroup A Rous sarcoma virus (RSV-A), even though Nef had no effect if the pH-dependent Env protein of RSV-A was used for pseudotyping. However, Nef does not always enhance viral infectivity if the normal orientation of the Env-receptor interaction is reversed, because the entry of Env-deficient HIV-1 into cells expressing the vesicular stomatitis virus G protein was unaffected by Nef. Together, our results demonstrate that the presence of a viral Env protein during virus production is not required for the ability of Nef to increase viral infectivity. Furthermore, since the infectivity of Tva pseudotypes was blocked by inhibitors of endosomal acidification, we conclude that low-pH-dependent entry does not always bypass the requirement for Nef.

Indexed as

Virus InternalizationAvian ProteinsCD4 Antigensenv Gene Products, Human Immunodeficiency VirusHIV-1HumansHydrogen-Ion Concentrationnef Gene Products, Human Immunodeficiency VirusProtein BindingReceptors, VirusAvian ProteinsCD4 Antigensenv Gene Products, Human Immunodeficiency Virusnef Gene Products, Human Immunodeficiency Virusnef protein, Human immunodeficiency virus 1Receptors, VirusTva receptor

Identifiers

PMID18715908
PMCPMC2573167
OpenAlexW2148851107

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.