Figure 4.
Molecular size and FcγR activation property of the rituximab/ADA immune complex, (A) DLS analysis of the rituximab/ADA immune complex. The size distribution of rituximab (blue), ADA (green) and the rituximab/ADA complex at a molar ratio of 1:1 (red) is shown. (B) FcγRIIa activation by ADAs in the presence or absence of rituximab was measured by using Jurkat/FcγRIIa/NFAT-Luc reporter cells. Infliximab was used as a negative control. Data represent the mean + SEM (n = 3). (C) Correlation between the FcγRIIa activation and the size of the immune complex. The FcγRIIa activation (in relative light units: RLU) is plotted against the size of the immune complex (diameter). The dashed line is a regression line (R square is 0.848).