Figure 7. Apoptosis is not responsible for downregulation of Dicer with IFN-α treatment.
JAR cells were treated with 1000U/mL IFN-αfor 72hrs. For a positive control, JAR cells were treated with 250μM H2O2 for 15minutes. A. The presence of apoptotic cells was analyzed by Annexin V surface staining of treated cells. Treated JAR cultures were stained with Annexin V-FITC (see Materials and Methods). After single cell gating, a marker was set based on the untreated cells and the percentage of cells stained with Annexin V was determined. B. Activation of the apoptotic signaling cascade was analyzed by SDS-PAGE and western blotting for Dicer, Caspase-3, Caspase-8, and βactin.