Evidence map›Paper›PMID 23896422›Full record

ArticleVaccine2013

Immunization with different formulations of Mycobacterium tuberculosis antigen 85A induces immune responses with different specificity and protective efficacy.

Elma Tchilian, Diksha Ahuja, Ariann Hey, Shisong Jiang, Peter Beverley

Open access · hybridAbstract read
In one paragraph

Article in Vaccine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.6field-weighted citation impact, top 18% 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

5 citing papers in PubMed, 12 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Review
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 2 institutions in 1 country.

Elma TchilianUniversity of Oxford, The Peter Medawar Building for Pathogen Research, South Parks Road, Oxford OX1 3SY, UK. Electronic address: elma.tchilian@ndm.ox.ac.uk.
Diksha Ahuja
Ariann Hey
Shisong Jiang
Peter Beverley
Medawar Building for Pathogen Research · GBUniversity of Oxford · GB

Funding

Medical Research Council G0701235Medical Research Council G1100085
6 · The paper itself

Abstract

To test the relative efficacy of CD4 and CD8T cells in mediating protective immunity to Mycobacterium tuberculosis (Mtb), we compared three immunization regimes designed to induce preferentially each subset. BALB/c mice were immunized intranasally (i.n.) or parenterally with antigen 85A either in a recombinant Adenoviral vector (Ad85A), as recombinant protein (r85A) or as a set of overlapping 15mer peptides (p85A). For the first time we show that i.n. immunization with overlapping 85A synthetic peptides as well as Ad85A or r85A can provide protection against Mtb challenge. For all forms of the antigen, i.n. induces greater protection against Mtb challenge than parenteral immunization. Ad85A induces a predominantly CD8T cell response against the 85A(70-78) epitope, r85A a CD4 response to 85A(99-118) and p85A a balanced CD4/CD8 response to the CD4 85A(99-118 )and CD8 85A(145-152) epitopes. Immune responses to CD4 85A(99-118) and CD8 85A(70-78) but not CD8 85A(145-152) are protective. Although Ad85A induces a strong response to the protective CD8 85A(70-78) epitope, we could not induce any response to this epitope by peptide immunization. These results show that although peptide immunization can induce protective immunity to Mtb challenge, it can also induce a response to a non-protective epitope in antigen 85A, indicating that the specificity of an immune response may be more important for protection against Mtb than its magnitude. These findings have important implications for the application of such vaccines in humans.

Indexed as

AcyltransferasesAdministration, IntranasalAnimalsAntigens, BacterialCD4-Positive T-LymphocytesCD8-Positive T-LymphocytesDisease Models, AnimalEpitopes, T-LymphocyteFemaleMiceMice, Inbred BALB CMycobacterium tuberculosisTuberculosisTuberculosis VaccinesVaccines, SubunitVaccines, SyntheticAcyltransferasesantigen 85A, Mycobacterium tuberculosisAntigens, BacterialEpitopes, T-LymphocyteTuberculosis VaccinesVaccines, SubunitVaccines, SyntheticAdenovirusAntigen 85AEpitopesSubunit vaccineTuberculosis

Identifiers

PMID23896422
PMCPMC3898716
OpenAlexW1964145244

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.