title: Production and partial characterization of monoclonal antibodies against erythrogenic toxins type A and C from Streptococcus pyogenes.
abstract: Hybridoma cell lines producing monoclonal antibodies against streptococcal erythrogenic toxins type A and C were established from fusions of immunized BALB/c mice splenocytes with P3X63-Ag8.653 myeloma cells. Six MAbs recognize ETA and 11 MAbs bind to ETC. Two MAbs (designated ETA-2 and ETC-10) were produced in ascitic fluid and further characterized. ETA-2 (IgG2a) binds to ETA with an affinity constant of 1.8 x 10(10) M-1 and ETC-10 (IgG1) binds to ETC with an affinity constant of 3.5 x 10(9) M-1. The specificities of the MAbs were evaluated by ELISA and immunoblotting. Both MAbs ETA-2 and ETC-10 are useful in developing specific double-sandwich ELISAs, in which the MAbs were used as solid-phase capture antibodies for the quantitative determinations of ETA and ETC.
authors.affiliation: Institut für Molekulare Biotechnologie, Jena, Germany.
authors.forename: L
authors.initials: L
authors.lastname: Wollweber
authors.forename: H
authors.initials: H
authors.lastname: Fritzke
authors.forename: J H
authors.initials: JH
authors.lastname: Ozegowski
authors.forename: D
authors.initials: D
authors.lastname: Gerlach
authors.forename: W
authors.initials: W
authors.lastname: Köhler
mesh_terms: D000818:Animals; D000907:Antibodies, Bacterial / Q000096:biosynthesis / Q000276:immunology*; D000911:Antibodies, Monoclonal / Q000096:biosynthesis / Q000276:immunology*; D000915:Antibody Affinity; D001426:Bacterial Proteins; D001667:Binding, Competitive / Q000276:immunology; D015153:Blotting, Western; D004797:Enzyme-Linked Immunosorbent Assay; D000939:Epitopes / Q000276:immunology; D005098:Exotoxins / Q000276:immunology*; D005260:Female; D006825:Hybridomas / Q000276:immunology; D007132:Immunoglobulin Isotypes / Q000276:immunology; D008565:Membrane Proteins; D051379:Mice; D008807:Mice, Inbred BALB C; D013297:Streptococcus pyogenes / Q000276:immunology*
chemical_list: D000907:Antibodies, Bacterial; D000911:Antibodies, Monoclonal; D001426:Bacterial Proteins; D000939:Epitopes; D005098:Exotoxins; D007132:Immunoglobulin Isotypes; D008565:Membrane Proteins; C117980:SpeA protein, Streptococcus pyogenes; C027951:erythrogenic toxin