Fig. 3
From: Role of USP7 in the regulation of tolerogenic dendritic cell function in type 1 diabetes

USP7 blockade decreases PD-L1 and PD-L2 expression in tolerogenic Stat5b-CA.DCs. Purified splenic DCs (1 × 105 cells/well) from NOD and NOD.Stat5b-CA mice were cultured for 24 h in the presence (+ P5091) or absence (− P5091) of USP7 inhibitor (5 µM/mL). DCs were washed, labeled with anti-CD11c mAbs in combination with anti-PD-L1 and anti-PD-L2 mAbs. A–D Flow cytometry plots depict PD-L1 and PD-L2 expression (A, C) and cell frequencies (B, D) in CD11c+ DCs. E Flow cytometry histogram depicts levels of PD-L1 and PD-L2 expressions and (F–G) MFI in CD11c+ DCs treated with or without USP7 inhibitor (5 µM/mL). Data are shown as the mean ± SEM of five independent experiments. One-way ANOVA followed by Tukey’s post hoc test was used. n.s, not significant; *P < 0.05; **P < 0.01; ***P < 0.001; ****P < 0.0001