Evidence map›Paper›PMID 19837843›Full record

ArticleApplied and environmental microbiology2009

Bacterial polyester inclusions engineered to display vaccine candidate antigens for use as a novel class of safe and efficient vaccine delivery agents.

Natalie A Parlane, D Neil Wedlock, Bryce M Buddle, Bernd H A Rehm

Open access · greenAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.4field-weighted citation impact, top 20% 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

23 citing papers in PubMed, 56 citations in OpenAlex.

  1. Review
  2. AVaccines · 2021
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  6. Biomedical Applications of Polyhydroxyalkanoates.Indian journal of microbiology · 2017
    Review
  7. Article
  8. Article
  9. Article
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  11. Article
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  13. Smart polyhydroxyalkanoate nanobeads by protein based functionalization.Nanomedicine : nanotechnology, biology, and medicine · 2015
    Review
  14. Article
  15. Article
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  18. Review
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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

4 authors at 2 institutions in 1 country.

Natalie A ParlaneInstitute of Molecular Biosciences, Massey University, Palmerston North 4442, New Zealand.
D Neil Wedlock
Bryce M Buddle
Bernd H A Rehm
AgResearch · NZMassey University · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Bioengineered bacterial polyester inclusions have the potential to be used as a vaccine delivery system. The biopolyester beads were engineered to display a fusion protein of the polyester synthase PhaC and the two key antigens involved in immune response to the infectious agent that causes tuberculosis, Mycobacterium tuberculosis, notably antigen 85A (Ag85A) and the 6-kDa early secreted antigenic target (ESAT-6) from Mycobacterium tuberculosis. Polyester beads displaying the respective fusion protein at a high density were successfully produced (henceforth called Ag85A-ESAT-6 beads) by recombinant Escherichia coli. The ability of the Ag85A-ESAT-6 beads to enhance mouse immunity to the displayed antigens was investigated. The beads were not toxic to the animals, as determined by weight gain and absence of lesions at the inoculation site in immunized animals. In vivo injection of the Ag85A-ESAT-6 beads in mice induced significant humoral and cell-mediated immune responses to both Ag85A and ESAT-6. Vaccination with Ag85A-ESAT-6 beads was efficient at stimulating immunity on their own, and this ability was enhanced by administration of the beads in an oil-in-water emulsion. In addition, vaccination with the Ag85A-ESAT-6 beads induced significantly stronger humoral and cell-mediated immune responses than vaccination with an equivalent dose of the fusion protein Ag85A-ESAT-6 alone. The immune response induced by the beads was of a mixed Th1/Th2 nature, as assessed from the induction of the cytokine gamma interferon (Th1 immune response) and increased levels of immunoglobulin G1 (Th2 immune response). Hence, engineered biopolyester beads displaying foreign antigens represent a new class of versatile, safe, and biocompatible vaccines.

Indexed as

MicrospheresAcyltransferasesAnimalsAntibodies, BacterialAntigens, BacterialBacterial ProteinsDrug Delivery SystemsEscherichia coliFemaleImmunity, CellularInterferon-gammaLymphocyte ActivationMiceMice, Inbred C57BLMycobacterium tuberculosisPolyestersAcyltransferasesAntibodies, Bacterialantigen 85A, Mycobacterium tuberculosisAntigens, BacterialBacterial ProteinsESAT-6 protein, Mycobacterium tuberculosisInterferon-gammapoly(3-hydroxyalkanoic acid) synthasePolyestersRecombinant Fusion ProteinsTuberculosis Vaccines

Identifiers

PMID19837843
PMCPMC2794117
OpenAlexW2002507983

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.