Figure 3. 18F-FLT (but not 18F-FDG) PET activity is suppressed with EWS-FLI1 silencing.
(A) 18F-FLT PET activity decreased in vitro in TC32 Ewing sarcoma cells with siRNA silencing of EWS-FLI1(siEWS) but not with a non-targeting control (siNeg); EWS-FLI1 suppression with mithramycin (MMA), EC-8042, or EC-8105 decreases 18F-FLT activity (B) 18F-FDG activity does not change with siRNA silencing of EWS-FLI1 and with EWS-FLI1 suppression with mithramycin (MMA), EC-8042, or EC-8105. 5FU suppresses 18F-FDG activity likely due to a loss of cell viability.