In vitro neutralization of Chlamydia trachomatis with monoclonal antibody to an epitope on the major outer membrane protein. 1984

R Peeling, and I W Maclean, and R C Brunham

A murine monoclonal antibody, which binds to an epitope on the major outer membrane protein of Chlamydia trachomatis and with species specificity in the micro-immunofluorescent assay, effectively neutralized in vitro two antigenically distinct serovars of C. trachomatis. Optimal concentrations of both organism and antibody were required to produce maximal neutralization of the organism. Neutralization was less effective and more variable at lower dilutions of antibody than at higher dilutions, suggesting a prozone phenomenon. A radiolabeled attachment assay demonstrated that attachment of elementary bodies was unaffected by earlier treatment with antibody and that neutralization occurred at a step after attachment. The epitope to which this antibody is directed, on the major outer membrane protein of C. trachomatis, may have an important role in determining infectivity of the organism.

UI MeSH Term Description Entries
D002692 Chlamydia trachomatis Type species of CHLAMYDIA causing a variety of ocular and urogenital diseases.
D006367 HeLa Cells The first continuously cultured human malignant CELL LINE, derived from the cervical carcinoma of Henrietta Lacks. These cells are used for, among other things, VIRUS CULTIVATION and PRECLINICAL DRUG EVALUATION assays. Cell, HeLa,Cells, HeLa,HeLa Cell
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000268 Adhesiveness A property of the surface of an object that makes it stick to another surface. Adhesivenesses
D000907 Antibodies, Bacterial Immunoglobulins produced in a response to BACTERIAL ANTIGENS. Bacterial Antibodies
D000911 Antibodies, Monoclonal Antibodies produced by a single clone of cells. Monoclonal Antibodies,Monoclonal Antibody,Antibody, Monoclonal
D000936 Antigen-Antibody Complex The complex formed by the binding of antigen and antibody molecules. The deposition of large antigen-antibody complexes leading to tissue damage causes IMMUNE COMPLEX DISEASES. Immune Complex,Antigen-Antibody Complexes,Immune Complexes,Antigen Antibody Complex,Antigen Antibody Complexes,Complex, Antigen-Antibody,Complex, Immune,Complexes, Antigen-Antibody,Complexes, Immune
D000939 Epitopes Sites on an antigen that interact with specific antibodies. Antigenic Determinant,Antigenic Determinants,Antigenic Specificity,Epitope,Determinant, Antigenic,Determinants, Antigenic,Specificity, Antigenic
D001425 Bacterial Outer Membrane Proteins Proteins isolated from the outer membrane of Gram-negative bacteria. OMP Proteins,Outer Membrane Proteins, Bacterial,Outer Membrane Lipoproteins, Bacterial

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