Evidence map›Paper›PMID 19239680›Full record

ArticleBMC medical genomics2009

Transcriptional profiling of mycobacterial antigen-induced responses in infants vaccinated with BCG at birth.

Helen A Fletcher, Alana Keyser, Mark Bowmaker, Peter C Sayles, Gilla Kaplan, Greg Hussey, Adrian V S Hill, Willem A Hanekom

Abstract read
In one paragraph

Article in BMC medical genomics, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
18citing papers in PubMed, 1 pooled it
–field-weighted citation impact
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

18 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
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  9. Article
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  13. Coping with genetic diversity: the contribution of pathogen and human genomics to modern vaccinology.Brazilian journal of medical and biological research = Revista brasileira de pesquisas medicas e biologica · 2012
    Article
  14. Review
  15. Article
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  17. Tuberculosis: global approaches to a global disease.Current opinion in biotechnology · 2010
    Review
  18. 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

8 authors.

Helen A FletcherJenner Institute, ORCRB, University of Oxford, Churchill Hospital, Oxford, OX3 7DQ, UK. helen.fletcher@ndm.ox.ac.uk
Alana Keyser
Mark Bowmaker
Peter C Sayles
Gilla Kaplan
Greg Hussey
Adrian V S Hill
Willem A Hanekom

Funding

Protective immunity induced by newborn BCG vaccinationR01AI065653 · NIAID · UNIVERSITY OF CAPE TOWN · PI HANEKOM, WILLEM ALBERT · 2005 to 2009
$2.5M
NIAID NIH HHS R01 AI065653
6 · The paper itself

Abstract

backgroundNovel tuberculosis (TB) vaccines recently tested in humans have been designed to boost immunity induced by the current vaccine, Mycobacterium bovis Bacille Calmette-Guérin (BCG). Because BCG vaccination is used extensively in infants, this population group is likely to be the first in which efficacy trials of new vaccines will be conducted. However, our understanding of the complexity of immunity to BCG in infants is inadequate, making interpretation of vaccine-induced immune responses difficult.

methodsTo better understand BCG-induced immunity, we performed gene expression profiling in five 10-week old infants routinely vaccinated with BCG at birth. RNA was extracted from 12 hour BCG-stimulated or purified protein derivative of tuberculin (PPD)-stimulated PBMC, isolated from neonatal blood collected 10 weeks after vaccination. RNA was hybridised to the Sentrix(R) HumanRef-8 Expression BeadChip (Illumina) to measure expression of >16,000 genes.

resultsWe found that ex vivo stimulation of PBMC with PPD and BCG induced largely similar gene expression profiles, except that BCG induced greater macrophage activation. The peroxisome proliferator-activated receptor (PPAR) signaling pathway, including PPAR-gamma, involved in activation of the alternative, anti-inflammatory macrophage response was down-regulated following stimulation with both antigens. In contrast, up-regulation of genes associated with the classic, pro-inflammatory macrophage response was noted. Further analysis revealed a decrease in the expression of cell adhesion molecules (CAMs), including integrin alpha M (ITGAM), which is known to be important for entry of mycobacteria into the macrophage. Interestingly, more leukocyte genes were down-regulated than up-regulated.

conclusionOur results suggest that a combination of suppressed and up-regulated genes may be key in determining development of protective immunity to TB induced by vaccination with BCG.

Identifiers

PMID19239680
PMCPMC2654906

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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.