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Updated: Jun 2, 2025

Peptide Scanning-assisted Identification of a Monoclonal Antibody-recognized Linear B-cell Epitope
Published on: March 24, 2017
Examining homology between MPXV and immunogenic VACV-derived peptides.
Lara I Teodoro1, Inna G Ovsyannikova1, Gregory A Poland1
1Mayo Clinic Vaccine Research Group, Mayo Clinic, Rochester, MN 55905, USA.
Current mpox vaccines use whole vaccinia viruses. This study found high sequence homology between vaccinia-derived peptides and mpox virus, suggesting potential for new, stable peptide-based mpox vaccines.
Area of Science:
- Virology
- Immunology
- Vaccine Development
Background:
- The 2022 mpox virus (MPXV) outbreak highlighted the need for effective countermeasures.
- Current MPXV prophylaxis relies on live vaccinia virus (VACV)-based vaccines developed for smallpox.
Purpose of the Study:
- To evaluate the potential of VACV-derived peptides for MPXV-specific immunity.
- To assess sequence homology between VACV peptides and MPXV clades.
Main Methods:
- Mass spectrometry was used to identify 152 VACV-derived peptides.
- Peptide sequences were analyzed for homology against MPXV-1 and MPXV-2.
Main Results:
- 61.2% (93/152) of VACV-derived peptides showed 100% homology with both MPXV clades.
- This supports the hypothesis of immunologic cross-reactivity due to poxvirus sequence homology.
Conclusions:
- VACV-derived peptides are promising candidates for MPXV-specific immunity.
- Peptide-based MPXV vaccines could offer advantages like stability and lower manufacturing costs over current vaccines.
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