Evidence map›Paper›PMID 22190399›Full record

ArticleClinical and vaccine immunology : CVI2012

Antibody breadth and protective efficacy are increased by vaccination with computationally optimized hemagglutinin but not with polyvalent hemagglutinin-based H5N1 virus-like particle vaccines.

Brendan M Giles, Stephanie J Bissel, Dilhari R Dealmeida, Clayton A Wiley, Ted M Ross

Open access · diamondAbstract readComparative Study
In one paragraph

Article in Clinical and vaccine immunology : CVI, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 45 papers.

0numbers the graph read from it
0cells of the map it votes in
45citing papers in PubMed
3.0field-weighted citation impact, top 9% 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

45 citing papers in PubMed, 81 citations in OpenAlex.

  1. 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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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

5 authors at 1 institution in 1 country.

Brendan M GilesCenter for Vaccine Research, Department of Microbiology and Molecular Genetics, University of Pittsburgh, Pittsburgh, Pennsylvania, USA.
Stephanie J Bissel
Dilhari R Dealmeida
Clayton A Wiley
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
MIDCAREER INVESTIGATOR AWARDK24MH001717 · NIMH · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI WILEY, CLAYTON A. · 1999 to 2009
$1.1M
NIAID NIH HHS T32 AI060525NIAID NIH HHS T32AI060525NIAID NIH HHS U01 AI077771NIAID NIH HHS U01AI077771NIMH NIH HHS K24 MH001717NIMH NIH HHS K24MH01717
6 · The paper itself

Abstract

One of the challenges for developing an H5N1 influenza vaccine is the diversity of antigenically distinct isolates within this subtype. Previously, our group described a novel hemagglutinin (HA) derived from a methodology termed computationally optimized broadly reactive antigen (COBRA). This COBRA HA, when used as an immunogen, elicits a broad antibody response against H5N1 isolates from different clades. In this report, the immune responses elicited by the COBRA HA virus-like particle (VLP) vaccine were compared to responses elicited by a mixture of VLPs expressing representative HA molecules from clade 2.1, 2.2, and 2.3 primary H5N1 isolates (polyvalent). The COBRA HA VLP vaccine elicited higher-titer antibodies to a panel of H5N1 HA proteins than did the other VLPs. Both COBRA and polyvalent vaccines protected vaccinated mice and ferrets from experimental infection with highly lethal H5N1 influenza viruses, but COBRA-vaccinated animals had decreased viral replication, less inflammation in the lungs of mice, and reduced virus recovery in ferret nasal washes. Both vaccines had similar cellular responses postchallenge, indicating that higher-titer serum antibodies likely restrict the duration of viral replication. Furthermore, passively transferred immune serum from the COBRA HA VLP-vaccinated mice protected recipient animals more efficiently than immune serum from polyvalent-vaccinated mice. This is the first report comparing these two vaccine strategies. The single COBRA HA antigen elicited a broader antibody response and reduced morbidity and viral titers more effectively than a polyvalent mixture of primary H5N1 HA antigens.

Indexed as

AnimalsAntibodies, ViralAntibody FormationFemaleFerretsHemagglutinin Glycoproteins, Influenza VirusInfluenza A Virus, H5N1 SubtypeInfluenza VaccinesLungMiceMice, Inbred BALB COrthomyxoviridae InfectionsVaccinationVaccines, Virus-Like ParticleAntibodies, ViralHemagglutinin Glycoproteins, Influenza VirusInfluenza VaccinesVaccines, Virus-Like Particle

Identifiers

PMID22190399
PMCPMC3272934
OpenAlexW2114923690

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.