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  • Title: Surface antigen analysis of group B Neisseria meningitis outer membrane by monoclonal antibodies: identification of bactericidal antibodies to class 5 protein.
    Author: Danelli MG, Batoreu NM, Lacerda MD, Ferreira CR, Cardoso JD, Peralta JM, Frasch CE.
    Journal: Curr Microbiol; 1995 Sep; 31(3):146-51. PubMed ID: 7545046.
    Abstract:
    Twenty-four monoclonal antibodies (mAbs) against group B Neisseria meningitidis surface antigens were analyzed by immunoenzymatic assays and by a bactericidal test. Two mAbs were specific to polysaccharide B and one to lipopolysaccharide. The others were specific to polysaccharide B and one to lipopolysaccharide. The others were directed against outer membrane proteins ranging in molecular mass from 25 to 200 kDa. The outer membrane protein epitopes recognized by the mAbs were not conformational and were located on the outer surface of the microorganism. Linear epitopes on the class 5 protein, exposed on the surface of the membrane, were able to induce bactericidal antibodies to the homologous strain. The susceptibility of Neisseria meningitidis to these antibodies was unchanged when this organism was cultivated under conditions of iron depletion. These results demonstrate that peptides derived from class 5 proteins are potentially important in synthetic peptide or in recombinant protein vaccines containing linear bactericidal epitopes.
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