Evidence map›Paper›PMID 21320540›Full record

ArticleVaccine2011

A computationally optimized broadly reactive antigen (COBRA) based H5N1 VLP vaccine elicits broadly reactive antibodies in mice and ferrets.

Brendan M Giles, Ted M Ross

Abstract readComparative Study
In one paragraph

Article in Vaccine, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 126 papers.

0numbers the graph read from it
0cells of the map it votes in
126citing papers in PubMed
5.0field-weighted citation impact, top 5% 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

126 citing papers in PubMed, 202 citations in OpenAlex.

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  8. HarnessingMaterials today. Bio · 2025
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  11. Broadly active intranasal influenza vaccine with a nanocomplex particulate adjuvant targeting mast cells and toll-like receptor 9.Journal of controlled release : official journal of the Controlled Release Society · 2025
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66 more citing papers are in PubMed but not listed here.

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.

Brendan M GilesCenter for Vaccine Research, University of Pittsburgh, Pittsburgh, PA 15261, USA.
Ted M Ross
University of Pittsburgh · US

Funding

Immunology of Infectious DiseaseT32AI060525 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI JoAnne L. Flynn · 2005 to 2026
$5.3M
Virus-Like Particle Vaccines for Pandemic InfluenzaU01AI077771 · NIAID · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI ROSS, TED M · 2008 to 2010
$3.9M
NIAID NIH HHS T32 AI060525NIAID NIH HHS T32AI060525NIAID NIH HHS U01 AI077771NIAID NIH HHS U01AI077771
6 · The paper itself

Abstract

Pandemic outbreaks of influenza are caused by the emergence of a pathogenic and transmissible virus to which the human population is immunologically naïve. Recent outbreaks of highly pathogenic avian influenza (HPAI) of the H5N1 subtype are of particular concern because of the high mortality rate (60% case fatality rate) and novel subtype. In order to develop a vaccine that elicits broadly reactive antibody responses against emerging H5N1 isolates, we utilized a novel antigen design technique termed computationally optimized broadly reactive antigen (COBRA). The COBRA HA sequence was based upon HA amino acid sequences from clade 2 H5N1 human infections and the expressed protein retained the ability to bind the receptor, as well as mediate particle fusion. Non-infectious recombinant VLP vaccines using the COBRA HA were purified from a mammalian expression system. Mice and ferrets vaccinated with COBRA HA H5N1 VLPs had protective levels of HAI antibodies to a representative isolates from each subclade of clade 2. Furthermore, VLP vaccinated animals were completely protected from a lethal challenge of the clade 2.2 H5N1 virus A/Whooper Swan/Mongolia/244/2005. This is the first report describing the use of COBRA-based antigen design. The COBRA HA H5N1 VLP vaccine elicited broadly reactive antibodies and is an effective influenza vaccine against HPAI virus.

Indexed as

AnimalsAntibodies, ViralAntibody FormationAntigens, ViralComputational BiologyComputer-Aided DesignDogsDrug DesignFemaleFerretsHEK293 CellsHemagglutination Inhibition TestsHemagglutinin Glycoproteins, Influenza VirusHumansInfluenza A Virus, H5N1 SubtypeInfluenza VaccinesAntibodies, ViralAntigens, ViralHemagglutinin Glycoproteins, Influenza Virushemagglutinin, human influenza A virusInfluenza Vaccines

Identifiers

PMID21320540
PMCPMC3090662
OpenAlexW2055817672

What OpenQuestion holds

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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.