Fig. 5
From: COX-2 expression positively correlates with PD-L1 expression in human melanoma cells
Effect of celecoxib on the in vitro proliferation of BRAFV600E and NRASQ61R melanoma cell lines. a BRAFV600E A375 and NRASQ61R SK-MEL-2 melanoma cells were seeded at the density of 3 × 103 per well in a 96-well plate and incubated with the indicated concentrations of celecoxib. Untreated cells were used as a control. DMSO (vehicle of celecoxib) concentration was maintained at 0.02% in all wells. Following a 24 h incubation at 37 °C in a 5% CO2 atmosphere, growth inhibition was determined by MTT assay. Data are expressed as mean percent of proliferation ± SD of treated cells as compared to untreated control cells. Mean percent of proliferation and SD were calculated from three independent experiments performed in triplicate. Difference between doses of celecoxib was calculated using unpaired t-test. *** indicate P < 0.001. b BRAFV600E A375 and NRASQ61R SK-MEL-2 melanoma cells were seeded at the density of 4 × 105 per well in a 75 cm2 tissue culture flask and incubated with celecoxib (60 μM). Untreated cells were used as a control. DMSO (vehicle of celecoxib) concentration was maintained at 0.02% in all wells. Following a 24 h incubation at 37 °C in a 5% CO2 atmosphere, viability of cells was determined by trypan blue assay. Data are expressed as mean percentage of viable (negative) and death cells (positive) of treated cells as compared to untreated control cells. *** indicate P < 0.001