Western blot was performed as previously described (27 (link)). Samples of equivalent total protein (40 μg) were loaded. Primary antibody against REST, p-Raf-1, p-beta-catenin, p-MEK-2, p-ERK-1/2 (Abcam, Cambridge, UK, 1:500), E-cadherin, N-cadherin, Vimentin, MMP-9, ZO-1, MEK-2, ERK1/2, Raf-1, beta-catenin, beta-Actin, and Histone H3 (ProteinTech Group, Rosemont, USA, 1:500) were used. Suppression of MAPK signaling pathway with U0126 was performed as previously described (28 (link)). In brief, cells incubated in t25 culture flask with 60~70% confluency were treated with 10 μM U0126 for 36 h before further analysis.
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