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Updated: Jul 10, 2026

Semi-Quantitative Analysis of Peptidoglycan by Liquid Chromatography Mass Spectrometry and Bioinformatics
09:09

Semi-Quantitative Analysis of Peptidoglycan by Liquid Chromatography Mass Spectrometry and Bioinformatics

Published on: October 13, 2020

Analysis of peptide mimotopes of Burkholderia pseudomallei exopolysaccharide

Joseph B Legutki1, Michelle Nelson, Richard Titball

  • 1Department of Microbiology, The Ohio State University, 484 W 12th Ave Rm 376, Columbus, OH 43210, United States. Bart.Legutki@asu.edu

Vaccine
|October 16, 2007
PubMed

Insights

Researchers developed mimotopes that mimic Burkholderia pseudomallei’s exopolysaccharide. Immunizing mice with these mimotopes improved survival in a melioidosis model, suggesting potential for a B. pseudomallei vaccine.

Area of Science:

  • Microbiology
  • Immunology
  • Vaccine Development

Background:

  • Monoclonal antibodies 4VA5 and 3VIE5 demonstrated protection against Burkholderia pseudomallei.
  • Phage library panning identified peptides that inhibit antibody binding to B. pseudomallei.

Purpose of the Study:

  • To develop mimotopes of B. pseudomallei's capsular exopolysaccharide.
  • To evaluate the immunogenicity and protective efficacy of these mimotopes.

Main Methods:

  • Phage display panning to identify antibody-reactive peptides.
  • Conjugation of peptides to thyroglobulin for immunization.
  • Assessment of serum antibody recognition of peptides and B. pseudomallei.
  • Evaluation of immunization efficacy in a murine model of acute melioidosis.

Main Results:

  • Identified peptides that act as mimotopes of B. pseudomallei exopolysaccharide.
  • Immunization with a mimotope (4VA5 binding site) extended mean survival time in mice from 2.18 to 8.00 days.
  • Resulting antibodies recognized B. pseudomallei exopolysaccharide.

Conclusions:

  • Peptide mimotopes can elicit immune responses targeting B. pseudomallei exopolysaccharide.
  • This mimotope strategy shows promise for developing subunit vaccines against B. pseudomallei.
  • Further development could lead to novel strategies for combating melioidosis.

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