Fig. 1

Kinase siRNA screen of liposarcoma cell lines and kinase target validation. a Cell viability plot of LPS141 and MLS402 cells after 96 h post-transfection with the siRNA library. Results represent mean values compared to non-specific control. Blue bars represent viability more than 70% of control and P > 0.05. Red bars indicate viability less than 70% of control and P < 0.05. Black bars are non-specific pooled siRNA controls. b Validation of PTK2 and KIT as target kinase using siRNA and shRNA knockdown in LPS141 and MLS402 cells. Cell viability evaluated by MTT assay at different time points. Western blotting showed reduced protein levels of PTK2 and KIT after 72 h of siRNA transfection and shRNA infection. c Cell viability analysis at different time points of PTK2 and KIT CRISPR knockout LPS141 and MLS402 cells, respectively, along with LacZ sgRNA knockout control cells. Western blotting confirmed that CRISPR sgRNA1 and sgRNA2 significantly silenced protein expression in the respective cells compared to LacZ sgRNA (α-tubulin, loading control). Experiments were done in triplicates, 3 times and shown as mean ± SE. *P value < 0.01