Bioengineering Outer-Membrane Vesicles for Vaccine Development: Strategies, Advances, and Perspectives.

Area of Science:

• Microbiology
• Immunology
• Biotechnology

Background:

• Outer-membrane vesicles (OMVs) are bacterial nanoparticles with roles in pathogenesis and communication.
• Their inherent immunogenicity and adjuvant properties make them promising vaccine candidates.
• OMVs are scalable and can be engineered to present diverse antigens.

Purpose of the Study:

• To review the properties and applications of OMVs in vaccine development.
• To explore advanced engineering strategies for OMV-based vaccines.
• To discuss recent preclinical advancements and future directions in OMV research.

Main Methods:

• Review of established and emerging OMV engineering strategies.
• Analysis of genetic engineering, surface conjugation, and glycoengineering techniques.
• Discussion of synthetic OMVs, nanorobots, and nanodiscs.

Main Results:

• OMVs possess unique structural and immunological features for eliciting strong immune responses.
• Engineering enables multi-epitope antigen incorporation, addressing antigenic variability and co-infections.
• Advancements include synthetic OMVs, nanorobots, and improved isolation methods.

Conclusions:

• OMVs are versatile platforms for next-generation vaccines against infectious diseases and cancer.
• Engineered OMVs offer broader immune coverage and cost-effective solutions.
• Synthetic biology integration promises accelerated OMV engineering research.