Following antibodies were used in this study: Anti-human MELK antibody (in-house, previously described [14 (link)]), anti-human DEPDC1 (in-house, previously described [36 (link)]), anti-human FOXM1, anti-human p53 (Santa Cruz Biotechnology), anti-human Ki67 (Millipore), anti-human p21, anti-human Slug, anti-human Snail (Cell Signaling Technology), anti-human E-cadherin (BD biosciences), anti-HA (Roche), anti-FLAG M2, and anti-beta-actin antibodies (Sigma). OTS167 was dissolved in DMSO (Sigma) for cell culture or in 5% glucose solution for animal study. The target sequences of oligo siRNAs were 5′-CUUACGCUGAGUACUUCGAUU-3′ for MELK and 5′-AGUUCAUUGGAACUACCAAUU-3′ for Luciferase (control). DEPDC1 oligo siRNA was purchased from Santa Cruz Biotechnology (sc-78918).
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