Western blot analyses and immunofluorescence staining were performed as our previous described [13 (link)]. Antibodies for p63 (SC-8431), p53(SC-126) and Twist 1 (SC-15393) were purchased from Santa Cruz Biotech (Dallas, Texas, USA). Antibody for Snail1 (CST-3879), Smad3 (9523) and p-Smad3 (9520) were purchased from CST (Cambridge, MA, USA). Antibody for GAPDH (AF1186) was purchased from Beyotime (Shanghai, China).
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