ArticleVaccines2026
EPIclip: A Novel Approach for the Production of Decorated Virus-Like Particles Mediated by High-Affinity Protein Binding Partners.
Article in Vaccines, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundVirus-like particles (VLPs) represent key tools for the development of vaccines due to their ability to induce a potent immune response to epitopes presented on their surface. However, the decoration of VLPs with a complete heterologous protein on the surface remains a bottleneck for clinical translation due to the complexity of manufacture. We present a novel platform, EPIclip™, for the decoration of VLPs mediated by high-affinity protein binding partners, colicin E7 (ColE7) and immunity protein 7 (Im7), within a single prokaryotic host. We evaluate this approach using a modified hepatitis B core capsid protein and IL-31 as a model epitope. IL-31 is a prominent therapeutic target for the development of pruritic diseases.
methodsWe explore the design and development of the platform, including the use of T-cell-stimulating peptides. We demonstrate several small-scale purification methods for the candidate VLP, as well as morphological analysis by transmission electron microscopy (TEM). Further, we vaccinate mice with IL-31-displaying VLPs to evaluate immunogenicity and the ability to prevent IL-31-induced pruritus in vivo.
resultsOur results demonstrate that decorated VLPs dosed in mice elicit an IgG response against IL-31 with at least six months of durability. In addition, IL-31-displaying VLPs suppress the development of IL-31-induced pruritus, confirming in vivo target neutralisation. Notably, IL-31-displaying VLPs induce a strong T-cell response against the VLP capsid but not against the cytokine, confirming a B-cell-biased immune response and the absence of detrimental autoreactive T cells. We further demonstrate the translation of this system with an additional virus capsid: tomato aspermy virus (TAV).
conclusionsTaken together, the novel EPIclip™ platform may represent a promising therapeutic approach for pruritic diseases. Additionally, this modular system could be adapted for a wide range of research as well as human and veterinary therapeutic applications.
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