Comprehensive Western Blot Analysis of Biomarkers

Total proteins were prepared, and western blot analysis was performed as previously described [19 (link)]. We used the following primary antibodies: anti-CD81 (Abcam, Cat# ab79559), anti-TSG101 (Abcam, Cat# ab125011), anti-E-cadherin (Cell Signaling Technology, Danvers, MA, USA, Cat# 14472S), anti-Vimentin (Abcam, Cat# ab92547), anti-N-cadherin (Cell Signaling Technology, Cat# 13116S), anti-MMP-2 (Cell Signaling Technology, Cat# 40994S), anti-MMP-9 (Cell Signaling Technology, Cat# 13667T), anti-ZEB1 (Cell Signaling Technology, Cat# 70512S), anti-Snail (Cell Signaling Technology, Cat# 3879S), anti-Slug (Cell Signaling Technology, Cat# 9585S) anti-Twist1 (Cell Signaling Technology, Cat# 46702S), anti-EGFR (Cell Signaling Technology, Cat# 4267S), anti-ERK antibody (Cell Signaling Technology, Cat# 4696S) and anti-p-ERK antibody (Cell Signaling Technology, Cat# 4370T), anti-androgen receptor (Abcam, Cat# ab74272), anti-β-actin (Cell Signaling Technology, Cat# 3700S) and anti-GAPDH (Cell Signaling Technology, Cat# 5174S).