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A "Plug-And-Display" Nanoparticle Vaccine Platform Based on Outer Membrane Vesicles Displaying SARS-CoV-2 Receptor-Binding Domain
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Glycoengineered Outer Membrane Vesicles: A Novel Platform for Bacterial Vaccines
Nancy L Price1, Guillaume Goyette-Desjardins2, Harald Nothaft1
1Department of Biological Sciences, University of Alberta Edmonton, Alberta T6G 2E9 Canada.
Scientific Reports
|April 23, 2016
Summary
A novel vaccine platform using engineered outer membrane vesicles (geOMVs) offers a cost-effective solution to combat rising antibiotic resistance. This innovative approach shows promise for developing new vaccines against various bacterial infections in humans and animals.
Area of Science:
- Microbiology
- Vaccinology
- Biotechnology
Background:
- The rise of multidrug-resistant bacteria signals a post-antibiotic era, necessitating new infection prevention strategies.
- Current conjugate vaccines, while effective, face challenges including slow development, high costs, and inconsistent production.
- Alternative vaccine development platforms are crucial to address the growing threat of untreatable infections.
Purpose of the Study:
- To introduce and validate a novel vaccine platform based on glycoengineered outer membrane vesicles (geOMVs).
- To demonstrate the versatility and efficacy of the geOMV platform against significant bacterial pathogens.
- To present a cost-effective and adaptable approach for developing vaccines against diverse microbial agents.
Main Methods:
- Engineering non-pathogenic Escherichia coli strains to produce geOMVs displaying specific pathogen glycans.
- Utilizing conserved bacterial glycan biosynthesis pathways for platform adaptability.
- Testing the immunogenic and protective efficacy of geOMVs in animal models.
Main Results:
- Demonstrated successful production of geOMVs displaying target pathogen glycans.
- Confirmed the efficacy of geOMVs as vaccines against Streptococcus pneumoniae in mice.
- Showcased the effectiveness of geOMVs against Campylobacter jejuni in chickens.
Conclusions:
- The geOMV platform is a versatile, cost-effective method for vaccine development.
- This technology can be adapted to target a wide range of bacterial pathogens.
- geOMVs represent a promising strategy to combat infectious diseases in both human and veterinary medicine.
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