Figure 3.
Assessment of Foxo1 requirement for GC maintenance and proliferation in single transfer experiments. (A) Schematic illustration of the experimental protocol. (B) Flow cytometry of NP-specific donor B cells (CD45.1+B220+NP+). (C) Histograms representing the number of donor IgG1− GC B cells (CD45.1+B220+NP+CD38−IgG1−) and IgG1+ GC B cells (CD45.1+B220+NP+CD38−IgG1+) in 106 splenocytes (left), and the ratio of DZ:LZ cells (right). n = 5 biological replicates. (D) Proliferation status of Foxo1+/+ and Foxo1f/f LZ GC B cells assessed by EdU incorporation 30 min after an EdU injection. n = 3 biological replicates. (E) Analysis of Batf mRNA expression in Foxo1+/+ DZ, LZ, and Foxo1f/f GC B cells by real-time qPCR. n = 3 biological replicates. Error bars represent SD. Data are representative of three (B and C) or two independent experiments (D and E). **, P < 0.01; ***, P < 0.001; unpaired Student’s t test.