Evidence map›Paper›PMID 31483818›Full record

ArticlePloS one2019

Display of malaria transmission-blocking antigens on chimeric duck hepatitis B virus-derived virus-like particles produced in Hansenula polymorpha.

David Wetzel, Jo-Anne Chan, Manfred Suckow, Andreas Barbian, Michael Weniger, Volker Jenzelewski, Linda Reiling, Jack S Richards, David A Anderson, Betty Kouskousis and 6 more

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed
1.3field-weighted citation impact, top 23% 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

14 citing papers in PubMed, 16 citations in OpenAlex.

  1. Chemical reviews · 2026
    Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Review
  8. The Virtues and Vices of Pfs230: From Vaccine Concept to Vaccine Candidate.The American journal of tropical medicine and hygiene · 2022
    Article
  9. Frontiers in cellular and infection microbiology · 2022
    Review
  10. Review
  11. Review
  12. Article
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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

16 authors at 7 institutions in 2 countries.

David WetzelARTES Biotechnology GmbH, Langenfeld, Germany.ORCID 0000-0001-9584-895X
Jo-Anne ChanBurnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.
Manfred SuckowARTES Biotechnology GmbH, Langenfeld, Germany.
Andreas BarbianDüsseldorf University Hospital, Institute for Anatomy I, Düsseldorf, Germany.
Michael WenigerARTES Biotechnology GmbH, Langenfeld, Germany.
Volker JenzelewskiARTES Biotechnology GmbH, Langenfeld, Germany.
Linda ReilingBurnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.
Jack S RichardsBurnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.ORCID 0000-0001-5786-6989
David A AndersonBurnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.
Betty KouskousisBurnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.
Catherine PalmerBurnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.
Eric HanssenThe Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Melbourne, Victoria, Australia.ORCID 0000-0002-4064-1844
Gerhard SchembeckerLaboratory of Plant and Process Design, Technical University of Dortmund, Dortmund, Germany.
Juliane MerzEvonik Technology & Infrastructure GmbH, Hanau, Germany.
James G BeesonBurnet Institute for Medical Research and Public Health, Melbourne, Victoria, Australia.
Michael PiontekARTES Biotechnology GmbH, Langenfeld, Germany.
Burnet Institute · AUArtes Biotechnology (Germany) · DETU Dortmund University · DEDüsseldorf University Hospital · DEEvonik (Germany) · DEThe Royal Melbourne Hospital · AUThe University of Melbourne · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundMalaria caused by Plasmodium falciparum is one of the major threats to human health globally. Despite huge efforts in malaria control and eradication, highly effective vaccines are urgently needed, including vaccines that can block malaria transmission. Chimeric virus-like particles (VLP) have emerged as a promising strategy to develop new malaria vaccine candidates.

methodsWe developed yeast cell lines and processes for the expression of malaria transmission-blocking vaccine candidates Pfs25 and Pfs230 as VLP and VLP were analyzed for purity, size, protein incorporation rate and expression of malaria antigens.

resultsIn this study, a novel platform for the display of Plasmodium falciparum antigens on chimeric VLP is presented. Leading transmission-blocking vaccine candidates Pfs25 and Pfs230 were genetically fused to the small surface protein (dS) of the duck hepatitis B virus (DHBV). The resulting fusion proteins were co-expressed in recombinant Hansenula polymorpha (syn. Pichia angusta, Ogataea polymorpha) strains along with the wild-type dS as the VLP scaffold protein. Through this strategy, chimeric VLP containing Pfs25 or the Pfs230-derived fragments Pfs230c or Pfs230D1M were purified. Up to 100 mg chimeric VLP were isolated from 100 g dry cell weight with a maximum protein purity of 90% on the protein level. Expression of the Pfs230D1M construct was more efficient than Pfs230c and enabled VLP with higher purity. VLP showed reactivity with transmission-blocking antibodies and supported the surface display of the malaria antigens on the native VLP.

conclusionThe incorporation of leading Plasmodium falciparum transmission-blocking antigens into the dS-based VLP scaffold is a promising novel strategy for their display on nano-scaled particles. Competitive processes for efficient production and purification were established in this study.

Indexed as

AnimalsAntibodies, BlockingAntigens, ProtozoanDucksHepatitis B Virus, DuckHumansMalariaMalaria VaccinesPichiaPlasmodium falciparumRecombinant Fusion ProteinsVaccines, Virus-Like ParticleAntibodies, BlockingAntigens, ProtozoanMalaria VaccinesRecombinant Fusion ProteinsVaccines, Virus-Like Particle

Identifiers

PMID31483818
PMCPMC6726142
OpenAlexW2971909548

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.