PVSRIPO-mediated APC activation occurs in immunosuppressive conditions

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Fig. 4. PVSRIPO infection of DCs is sublethal, is marginally productive, and induces sustained proinflammatory cytokine production. PVSRIPO infection of.

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Fig. 5. PVSRIPO-mediated APC activation occurs in immunosuppressive conditions. PVSRIPO-mediated APC activation occurs in immunosuppressive conditions. (A and B) DCs were cultured in the presence of AIM V or DM6CM (24 hours) and untreated (mock) or treated with PVSRIPO (MOI, 10) or poly(I:C) (10 μg/ml) (48 hours). (A) Cells were analyzed for activation markers by flow cytometry. Data bars represent the mean of two independent experiments, and error bars denote SEM. Asterisks depict significance as determined by ANOVA protected Tukey’s post hoc test. For representative flow cytometry data, see fig. S4. (B) Supernatant from (A) was tested for proinflammatory cytokine production by ELISA. (C and D) DM6 cells cultured alone or with DCs were mock-treated or infected with PVSRIPO (MOI, 10). (C) Supernatant was tested for lytic release of MART1 by immunoblot; cell pellets were tested for markers of DM6 cells (MART1) and DC activation [CD40, TAP1, p-STAT1(Y701), and STAT1]. (D) Supernatants from (C) were assessed for proinflammatory cytokine production. (E and F) Negatively selected human monocytes were differentiated with MCSF (25 ng/ml) or MCSF + IL-10, TGF-β, and IL-4 (all at 20 ng/ml) for 7 days. Cells were infected with PVSRIPO (MOI, 10) or treated with combined poly(I:C) (10 μg/ml) and LPS (100 ng/ml) as shown. Cell lysates were retained for immunoblot (E), and supernatants were used for ELISA (F). (B, C, and E) Experiments were repeated three times, and representative data are shown. (D and F) Data bars represent the mean of two independent experiments, and error bars indicate SEM. Michael C. Brown et al., Sci Transl Med 2017;9:eaan4220 Published by AAAS