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April 30, 2021VirusesOpen Access

Vaccination with Prion Peptide-Displaying Polyomavirus-Like Particles Prolongs Incubation Time in Scrapie-Infected Mice

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Key result

Vaccination with prion peptide-displaying virus-like particles significantly increased mean survival time to 240 days compared with 202 days in control mice challenged with scrapie.

Why the study?

No approved therapy exists for fatal prion diseases, and immunisation is hindered by mammalian self-tolerance to normal cellular prion protein.

Does vaccination with prion peptide-displaying VLPs prolong survival in scrapie-infected mice?

Population

C57/BL6 mice subsequently challenged intraperitoneally with murine RML prion strain

Comparison

Nine prion peptide variants presented by hamster polyomavirus capsid protein VP1/VP2-derived VLPs vs control

Authors

MEMartin EidenAGAlma GedvilaitėFLFabienne Leidel

Discussion

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Member takes

Overview

Extends preclinical VLP vaccine data in scrapie models; leaves open translation to human prion disease prevention.

Structured PICO

Does vaccination with prion peptide-displaying VLPs prolong survival in scrapie-infected mice?

P
Population
C57/BL6 mice vaccinated with prion peptide variants and challenged with murine RML prion strain.
I
Intervention
Vaccination with nine prion peptide variants presented by hamster polyomavirus capsid protein VP1/VP2-derived virus-like particles (VLPs)
C
Comparator
Control group
O
Outcome
Mean survival time (incubation time)hard clinical

Main Result

Absolute Event Rate: 240% vs 202%

Vaccination with virus-like particles presenting PrP peptides significantly prolongs survival in scrapie-infected mice, offering a potential prophylactic strategy against prion diseases.

Cite This Study

Eiden et al. (2021) studied Scrapie (prion disease). Vaccination with prion peptide variants presented by hamster polyomavirus capsid protein VP1/VP2-derived VLPs vs. Control group was evaluated on Mean survival time. Vaccination with prion peptide-displaying virus-like particles significantly increased mean survival time to 240 days compared with 202 days in control mice challenged with scrapie.

synapsesocial.com/papers/6a9beab7a95200c669c7524dhttps://doi.org/10.3390/v13050811
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Also Consider

Synapse has enriched 4 closely related papers on similar clinical questions. Consider them for comparative context:

  1. 1Hamster Polyomavirus Research: Past, Present, and Future2021 · 8 citations
  2. 2Monoclonal antibodies inhibit prion replication and delay the development of prion disease2003 · 500 citations
  3. 3Prion Disease and the Innate Immune System2012 · 50 citations
  4. 4Yeast Cells Allow High-Level Expression and Formation of Polyomavirus-Like Particles1999 · 102 citations