Evidence map›Paper›PMID 22933284›Full record

ArticleJournal of virology2012

Sequences in glycoprotein gp41, the CD4 binding site, and the V2 domain regulate sensitivity and resistance of HIV-1 to broadly neutralizing antibodies.

Sara M O'Rourke, Becky Schweighardt, Pham Phung, Kathryn A Mesa, Aaron L Vollrath, Gwen P Tatsuno, Briana To, Faruk Sinangil, Kay Limoli, Terri Wrin and 1 more

Open access · bronzeAbstract read
In one paragraph

Article in Journal of virology, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.2field-weighted citation impact, top 23% 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

22 citing papers in PubMed, 28 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Article
  15. Article
  16. Article
  17. Article
  18. 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

11 authors at 2 institutions in 1 country.

Sara M O'RourkeDepartment of Biomolecular Engineering, University of California, Santa Cruz, Santa Cruz, California, USA.
Becky Schweighardt
Pham Phung
Kathryn A Mesa
Aaron L Vollrath
Gwen P Tatsuno
Briana To
Faruk Sinangil
Kay Limoli
Terri Wrin
Phillip W Berman
University of California, Santa Cruz · USGlobal Solutions for Infectious Diseases · US

Funding

HIV Variation in Injection Drug Users: Mapping Broadly Neutralizing AntibodiesR01DA026801 · NIDA · UNIVERSITY OF CALIFORNIA SANTA CRUZ · PI BERMAN, PHILLIP WAYNE · 2009 to 2013
$3.2M
NIDA NIH HHS R01 DA026801NIDA NIH HHS R01DA026801
6 · The paper itself

Abstract

The swarm of quasispecies that evolves in each HIV-1-infected individual represents a source of closely related Env protein variants that can be used to explore various aspects of HIV-1 biology. In this study, we made use of these variants to identify mutations that confer sensitivity and resistance to the broadly neutralizing antibodies found in the sera of selected HIV-1-infected individuals. For these studies, libraries of Env proteins were cloned from infected subjects and screened for infectivity and neutralization sensitivity. The nucleotide sequences of the Env proteins were then compared for pairs of neutralization-sensitive and -resistant viruses. In vitro mutagenesis was used to identify the specific amino acids responsible for the neutralization phenotype. All of the mutations altering neutralization sensitivity/resistance appeared to induce conformational changes that simultaneously enhanced the exposure of two or more epitopes located in different regions of gp160. These mutations appeared to occur at unique positions required to maintain the quaternary structure of the gp160 trimer, as well as conformational masking of epitopes targeted by neutralizing antibodies. Our results show that sequences in gp41, the CD4 binding site, and the V2 domain all have the ability to act as global regulators of neutralization sensitivity. Our results also suggest that neutralization assays designed to support the development of vaccines and therapeutics targeting the HIV-1 Env protein should consider virus variation within individuals as well as virus variation between individuals.

Indexed as

Antibodies, NeutralizingBinding SitesCD4-Positive T-LymphocytesComputational BiologyDNA Mutational AnalysisGene LibraryHEK293 CellsHIV-1HIV Envelope Protein gp160HIV Envelope Protein gp41HumansModels, GeneticModels, MolecularMolecular ConformationMolecular Sequence DataMutagenesisAntibodies, NeutralizingHIV Envelope Protein gp160HIV Envelope Protein gp41

Identifiers

PMID22933284
PMCPMC3486483
OpenAlexW2073134083

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.