Evidence map›Paper›PMID 33420068›Full record

ArticleNPJ vaccines2021

Mammalian expression of virus-like particles as a proof of principle for next generation polio vaccines.

Mohammad W Bahar, Claudine Porta, Helen Fox, Andrew J Macadam, Elizabeth E Fry, David I Stuart

Open access · goldAbstract read
In one paragraph

Article in NPJ vaccines, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
5.5field-weighted citation impact, top 3% 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

28 citing papers in PubMed, 46 citations in OpenAlex.

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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

6 authors at 3 institutions in 1 country.

Mohammad W BaharDivision of Structural Biology, University of Oxford, The Henry Wellcome Building for Genomic Medicine, Headington, Oxford, OX3 7BN, UK. mwbahar@strubi.ox.ac.uk.ORCID http://orcid.org/0000-0002-2350-2682
Claudine PortaDivision of Structural Biology, University of Oxford, The Henry Wellcome Building for Genomic Medicine, Headington, Oxford, OX3 7BN, UK.
Helen FoxThe National Institute for Biological Standards and Control, Potters Bar, EN6 3QG, UK.
Andrew J MacadamThe National Institute for Biological Standards and Control, Potters Bar, EN6 3QG, UK.ORCID http://orcid.org/0000-0002-8687-1573
Elizabeth E FryDivision of Structural Biology, University of Oxford, The Henry Wellcome Building for Genomic Medicine, Headington, Oxford, OX3 7BN, UK.ORCID http://orcid.org/0000-0001-9754-5303
David I StuartDivision of Structural Biology, University of Oxford, The Henry Wellcome Building for Genomic Medicine, Headington, Oxford, OX3 7BN, UK. dave@strubi.ox.ac.uk.ORCID http://orcid.org/0000-0002-3426-4210
Centre for Human Genetics · GBNational Institute for Biological Standards and Control · GBThe Pirbright Institute · GB

Funding

Medical Research Council G1100525Medical Research Council MC_PC_17137Medical Research Council MR/N00065X/1Medical Research Council MR/V001329/1Wellcome Trust
6 · The paper itself

Abstract

Global vaccination programs using live-attenuated oral and inactivated polio vaccine (OPV and IPV) have almost eradicated poliovirus (PV) but these vaccines or their production pose significant risk in a polio-free world. Recombinant PV virus-like particles (VLPs), lacking the viral genome, represent safe next-generation vaccines, however their production requires optimisation. Here we present an efficient mammalian expression strategy producing good yields of wild-type PV VLPs for all three serotypes and a thermostabilised variant for PV3. Whilst the wild-type VLPs were predominantly in the non-native C-antigenic form, the thermostabilised PV3 VLPs adopted the native D-antigenic conformation eliciting neutralising antibody titres equivalent to the current IPV and were indistinguishable from natural empty particles by cryo-electron microscopy with a similar stabilising lipidic pocket-factor in the VP1 β-barrel. This factor may not be available in alternative expression systems, which may require synthetic pocket-binding factors. VLPs equivalent to these mammalian expressed thermostabilized particles, represent safer non-infectious vaccine candidates for the post-eradication era.

Identifiers

PMID33420068
PMCPMC7794334
OpenAlexW3118614350

What OpenQuestion holds

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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.