Evidence map›Paper›PMID 21984246›Full record

ArticleApplied and environmental microbiology2011

Production of a particulate hepatitis C vaccine candidate by an engineered Lactococcus lactis strain.

Natalie A Parlane, Katrin Grage, Jason W Lee, Bryce M Buddle, Michel Denis, Bernd H A Rehm

Open access · greenAbstract read
In one paragraph

Article in Applied and environmental microbiology, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
1.3field-weighted citation impact, top 19% 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

26 citing papers in PubMed, 55 citations in OpenAlex.

  1. Article
  2. Article
  3. Review
  4. Review
  5. Review
  6. Review
  7. Article
  8. Review
  9. Review
  10. Review
  11. Review
  12. Article
  13. Subcutaneous Immunization with RecombinantReports of biochemistry & molecular biology · 2019
    Article
  14. Article
  15. Article
  16. Biomedical Applications of Polyhydroxyalkanoates.Indian journal of microbiology · 2017
    Review
  17. Article
  18. Article
  19. Article
  20. 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

6 authors at 2 institutions in 1 country.

Natalie A ParlaneAgResearch, Hopkirk Research Institute, Palmerston North, New Zealand.
Katrin Grage
Jason W Lee
Bryce M Buddle
Michel Denis
Bernd H A Rehm
AgResearch · NZMassey University · NZ

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Vaccine delivery systems based on display of antigens on bioengineered bacterial polyester inclusions can stimulate cellular immune responses. The food-grade Gram-positive bacterium Lactococcus lactis was engineered to produce spherical polyhydroxybutyrate (PHB) inclusions which abundantly displayed the hepatitis C virus core (HCc) antigen. In mice, the immune response induced by this antigen delivery system was compared to that induced by vaccination with HCc antigen displayed on PHB beads produced in Escherichia coli, to PHB beads without antigen produced in L. lactis or E. coli, or directly to the recombinant HCc protein. Vaccination site lesions were minimal in all mice vaccinated with HCc PHB beads or recombinant protein, all mixed in the oil-in-water adjuvant Emulsigen, while vaccination with the recombinant protein in complete Freund's adjuvant produced a marked inflammatory reaction at the vaccination site. Vaccination with the PHB beads produced in L. lactis and displaying HCc antigen produced antigen-specific cellular immune responses with significant release of gamma interferon (IFN-γ) and interleukin-17A (IL-17A) from splenocyte cultures and no significant antigen-specific serum antibody, while the PHB beads displaying HCc but produced in E. coli released IFN-γ and IL-17A as well as the proinflammatory cytokines tumor necrosis factor alpha (TNF-α) and IL-6 and low levels of IgG2c antibody. In contrast, recombinant HCc antigen in Emulsigen produced a diverse cytokine response and a strong IgG1 antibody response. Overall it was shown that L. lactis can be used to produce immunogenic PHB beads displaying viral antigens, making the beads suitable for vaccination against viral infections.

Indexed as

Adjuvants, ImmunologicAnimalsAntigens, ViralCytokinesDrug CarriersEmulsionsEscherichia coliGenetic EngineeringHepatitis CHepatitis C AntibodiesHydroxybutyratesImmunoglobulin GLactococcus lactisLeukocytes, MononuclearMiceOrganisms, Genetically ModifiedAdjuvants, ImmunologicAntigens, ViralCytokinesDrug CarriersEmulsionsHepatitis C AntibodiesHydroxybutyratesImmunoglobulin Gpoly-beta-hydroxybutyratePolyestersPolyhydroxybutyratesRecombinant ProteinsVaccines, SyntheticViral Vaccines

Identifiers

PMID21984246
PMCPMC3233089
OpenAlexW2105612205

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.