Fig. 3.
Development and screening of monoclonal human PC‐mAbs Flow cytometry demonstrates that unlike murine IgM anti‐PC(A), polyclonal anti‐PC IgG does not block oxLDL uptake by macrophages (b). Both IgG1 and IgG4 antibodies fail to display an inhibiting effect (c), excluding the potential enhanced Fc receptor‐regulated uptake of oxLDL (d) including Fc‐receptor blockade by anti‐CD32 and anti‐CD64 antibodies. Relative ranking of antibody affinity to PC (e) and oxLDL (f), measured through ELISA (expressed as OD). Flow cytometry of antibody affinity (g) for live cells (annexin V−PI−), early apoptotic cells (annexin V+PI−) and late apoptotic cells (annexin V+PI+), expressed as mean fluorescent intensity of each cell population. (h) CCL2 release assay of human monocytes stimulated with oxLDL alone or in combination with antibody clones, results of 2 individual experiments. One‐way ANOVA.