Abstract
Vaccines to prevent meningococcal disease have been developed from the outer membrane vesicles (OMVs) of Neisseria meningitidis and the related commensal organism Neisseria lactamica. In addition to lipopolysaccharide and the major porins, these vaccines contain a large number of proteins that are incompletely characterised. Here we describe comparative proteomic analyses of the N. lactamica OMV vaccine and OMVs from a serogroup B strain of N. meningitidis. Tandem mass-spectrometry data for trypsinised N. lactamica OMV vaccine were matched to an incompletely assembled genome sequence from the same strain to give 65 robust protein identifications and a further 122 single- or two-peptide matches. Fifty-seven N. meningitidis K454 proteins were identified robustly (and a further 68 from single- or two-peptide matches) by inference from the N. meningitidis MC58 genome. The results suggest that OMVs have a hitherto unappreciated complexity and pinpoint novel candidate antigens for further characterisation.
Original language | English |
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Pages (from-to) | 5277-5293 |
Number of pages | 17 |
Journal | Vaccine |
Volume | 24 |
Issue number | 25 |
DOIs | |
Publication status | Published - 19 Jun 2006 |
Bibliographical note
Funding Information:Research at the Health Protection Agency Centre for Preparedness and Response is funded by the UK Department of Health. The University of Southampton Centre for Proteomic Research is supported by grants from Hope, the BBSRC, the NIH and the Wellcome Trust. The OMVs used in this study were prepared by Denise Halliwell. The genomic library was constructed by Leah Desmond. Approximately half of the genomic sequencing was undertaken by Dr. Holger Wedler (Qiagen Sequencing Services).
Keywords
- Neisseria lactamica
- Neisseria meningitidis
- Outer membrane vesicle
- Proteomics
- Tandem mass spectrometry
- Vaccine