Evidence map›Paper›PMID 22072720›Full record

ArticleClinical and vaccine immunology : CVI2012

Vaccines displaying mycobacterial proteins on biopolyester beads stimulate cellular immunity and induce protection against tuberculosis.

Natalie A Parlane, Katrin Grage, Jun Mifune, Randall J Basaraba, D Neil Wedlock, Bernd H A Rehm, Bryce M Buddle

Open access · diamondAbstract read
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 29 papers.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed
2.8field-weighted citation impact, top 10% 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

29 citing papers in PubMed, 70 citations in OpenAlex.

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  13. AVaccines · 2021
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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

7 authors at 3 institutions in 2 countries.

Natalie A ParlaneAgResearch, Hopkirk Research Institute, Palmerston North, New Zealand.
Katrin Grage
Jun Mifune
Randall J Basaraba
D Neil Wedlock
Bernd H A Rehm
Bryce M Buddle
Massey University · NZAgResearch · NZColorado State University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

New improved vaccines are needed for control of both bovine and human tuberculosis. Tuberculosis protein vaccines have advantages with regard to safety and ease of manufacture, but efficacy against tuberculosis has been difficult to achieve. Protective cellular immune responses can be preferentially induced when antigens are displayed on small particles. In this study, Escherichia coli and Lactococcus lactis were engineered to produce spherical polyhydroxybutyrate (PHB) inclusions which displayed a fusion protein of Mycobacterium tuberculosis, antigen 85A (Ag85A)-early secreted antigenic target 6-kDa protein (ESAT-6). L. lactis was chosen as a possible production host due its extensive use in the food industry and reduced risk of lipopolysaccharide contamination. Mice were vaccinated with PHB bead vaccines with or without displaying Ag85A-ESAT-6, recombinant Ag85A-ESAT-6, or M. bovis BCG. Separate groups of mice were used to measure immune responses and assess protection against an aerosol M. bovis challenge. Increased amounts of antigen-specific gamma interferon, interleukin-17A (IL-17A), IL-6, and tumor necrosis factor alpha were produced from splenocytes postvaccination, but no or minimal IL-4, IL-5, or IL-10 was produced, indicating Th1- and Th17-biased T cell responses. Decreased lung bacterial counts and less extensive foci of inflammation were observed in lungs of mice receiving BCG or PHB bead vaccines displaying Ag85A-ESAT-6 produced in either E. coli or L. lactis compared to those observed in the lungs of phosphate-buffered saline-treated control mice. No differences between those receiving wild-type PHB beads and those receiving recombinant Ag85A-ESAT-6 were observed. This versatile particulate vaccine delivery system incorporates a relatively simple production process using safe bacteria, and the results show that it is an effective delivery system for a tuberculosis protein vaccine.

Indexed as

Immunity, CellularMicrospheresAcyltransferasesAnimalsAntigens, BacterialBacterial LoadBacterial ProteinsCytokinesDisease Models, AnimalDrug CarriersEscherichia coliFemaleHydroxybutyratesLactococcus lactisLeukocytes, MononuclearLungAcyltransferasesantigen 85A, Mycobacterium tuberculosisAntigens, BacterialBacterial ProteinsCytokinesDrug CarriersESAT-6 protein, Mycobacterium tuberculosisHydroxybutyratesPHB protein, humanpoly-beta-hydroxybutyratePolyestersPolyhydroxybutyratesProhibitinsRecombinant Fusion ProteinsTuberculosis Vaccines

Identifiers

PMID22072720
PMCPMC3255957
OpenAlexW2080012811

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.