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Image Search Results
Journal: JCI Insight
Article Title: IL-4 prevents adenosine-mediated immunoregulation by inhibiting CD39 expression
doi: 10.1172/jci.insight.157509
Figure Lengend Snippet: ( A and B ) T cells were stimulated in the absence or presence of the STAT6 inhibitor AS1517499 (100 nM for A ) or 20 ng/mL IL-4 for B. Cells were resuspended in medium supplemented with ATP at 20 μM on day 4 and eATP concentrations were determined after 30 minutes and 1 hour. Results are shown as a percent decline from original concentration. ( C ) Purified T cells were activated for 4 days in the absence or presence of AS1517499, then restimulated with newly added Dynabeads for 6 hours before cells were collected for intracellular cytokine staining and flow cytometry analysis. ( D – F ) Day 4-activated T cells were restimulated with newly added Dynabeads plus/minus adenosine (500 μM for D ), or the A2AR agonist CGS21680 (100 nM for E), or the P2RX antagonist oATP (100 μM for F) for 6 hours and then stained for intracellular cytokines. ( G ) Purified T cells were treated with STAT6 inhibitor AS1517499, A2AR antagonist SCH58621, or both during T cell activation by Dynabeads. On day 4, cells were restimulated by PMA/IONO for 4 hours before being collected for intracellular cytokine staining. Results are pooled from 3 experiments. Data in C are shown as mean ± SEM and compared by paired 2-tailed Student’s t test in A – G .
Article Snippet: Cells were activated for 4 days by anti-CD3/CD28 Dynabeads (Thermo Fisher Scientific, catalog 11132D; bead to cell ratio 1:2) in the presence or absence of cytokines or chemical compounds, including STAT6 inhibitor AS1517499 (100 nM; Axon Medchem, catalog Axon 1992), IL-4 (20 ng/mL; Peprotech, catalog 200-04), and
Techniques: Concentration Assay, Purification, Staining, Flow Cytometry, Activation Assay