Fig. 3.

Expression of tumor necrosis factor-related apoptosis-inducing ligand (TRAIL) receptors and apoptotic molecules in soft tissue sarcomas (STS) cells. (A) After incubating each of the four STS cell lines for 24 hr with different concentrations of MG132, expression levels of TRAIL receptors and apoptotic molecules were determined by western blot analysis. (B) Analysis of the surface expression of death receptor (DR)4 and DR5 was determined by flow cytometry in HT-1080 and HTB-82 cells. C, control; M1, 1 µM MG132; M2, 2 µM MG132; M10, 10 µM MG132.