WB was performed as previously described 17 (link). After incubation with the secondary antibody, the proteins were detected by chemiluminescence (Millipore Germany). The primary antibodies used in this study were anti-LHX6 (1:1000; Santa Cruz Biotechnology), anti-CTNNB1 (1:700; Santa Cruz Biotechnology), anti-MMP7 (1:1000; Abcam), anti-c-Myc (1:1000; Santa Cruz Biotechnology), anti-CCND1 (1:1000; Santa Cruz Biotechnology) and anti-GAPDH (1:2000; Beyotime China).