Evaluation of Thirty-One Mouse Monoclonal Antibodies to Human IgG Epitopes

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Abstract
Stable clones of 31 mouse hybridomas that produce monoclonal antibodies (MAbs) against human IgG antigenic determinants were obtained. The number of hybridomas of different specificity described are: 2 anti-IgG1 Fc, 1 anti-IgG2 Fc, 1 anti-IgG2 Fd, 2 anti-IgG3 Fc, 2 anti-IgG3, hinge, 3 anti-IgG4 Fc, 3 anti-IgG4 Fd, 2 anti-nG4m(b), 4 anti-IgGFc, 2 anti-IgGFd, 1 anti-kappa, 1 anti-lambda, 1 anti-non IgG1, 2 anti-non IgG2, 2 anti-non-IgG3, 2 anti-non-IgG4. Evidence is presented validating their specificity. Some MAbs demonstrated to be avid, potent, and specific for well defined IgG-subclass epitopes may be partially or completely inactive in other assay systems, presumably because of different presentations of antigen epitopes. In general, this problem requires careful writing of protocols describing the use of MAbs.