Western blot was performed as we described (24 (link)). Briefly, proteins were extracted from sarcoma cells and tissues by using RIPA lysis buffer (Beyotime). Proteins were separated and transferred onto PVDF membranes, which were then incubated with the antibodies against BATF2 (Abcam, Cambridge, MA, USA) or β-actin (Santa Cruz, Dallas, TX, USA), followed by the incubation of secondary antibody. Gray-scale of the bands were quantified by using ImageJ software.
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