PD‐L1 silencing in antigen presenting DCs results in hyperactivated pro‐inflammatory TCRhigh CD8+ T cells. PD‐L1 silencing in antigen presenting DCs results.

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PD‐L1 silencing in antigen presenting DCs results in hyperactivated pro‐inflammatory TCRhigh CD8+ T cells. PD‐L1 silencing in antigen presenting DCs results in hyperactivated pro‐inflammatory TCRhigh CD8+ T cells. A. The gating of OT‐I cells according to Vβ5.1.5.2 expression is shown. T cell populations were separated into high, medium and low surface expression for proliferation analyses by CFSE dilution in TCRhigh OT‐I co‐cultured with lentivector‐transduced DCs. B. Flow cytometry analyses of CFSE dilution in Vβ5.1.5.2high OT‐I cells co‐cultured for 4 days with DCs transduced with the indicated lentivectors (shown within the graph). The horizontal line within the graph delimits CFSE high T cells (95% of unstimulated OT‐I). C. Same as B, showing the mean percentages of CFSE high OT‐I cells with error bars are plotted (three experiments) according to Vβ5.1.5.2 surface expression (bottom). ***, highly significant differences. D. IFN‐γ and IL‐17 expression in OT‐I cells co‐cultured with lentivector‐transduced DCs (top). Percentage and mean fluorescent intensities are shown within the gates. E. As in (D), plotting mean percentages and error bars from three experiments, including IL‐2 expression. *, significant differences. F. Knee inflammation after intra‐articular challenge with OVA in groups of five mice. One day before challenge, OT‐I cells were co‐cultured with lentivector‐transduced DCs (legends within the graph) and intravenously transferred. Means are plotted with error bars (standard deviations). **, very significant differences. G. Percentage of OVA‐specific endogenous CD8+ T cells in draining lymph nodes stained with class I OVA‐pentamers, on day 7 after vaccination with the indicated lentivectors used for DC transduction (bottom). Means and error bars from three experiments are plotted. H. CD8+ responses by IFN‐γ ELISPOT on day 7 after vaccination with lentivector‐transduced DCs (bottom). Katarzyna Karwacz et al. EMBO Mol Med. 2011;3:581-592 © as stated in the article, figure or figure legend