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2 protocols using anti vimentin

1

Protein Extraction and Western Blot Analysis

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Whole cell lysates were obtained using the M-Per Mammalian Protein Extraction Reagent (Pierce Biotechnology, Woburn, MA). Nuclear protein extracts were prepared using a Nuclear Extraction Kit (Chemicon International, Temecula, CA) according to the manufacturer's instructions. Total proteins (40 μg) and nuclear proteins (10 μg) were separated on 10% SDS-PAGE and transferred to nitrocellulose membranes. Antigen-antibody complexes were detected using the enhanced chemiluminescence (ECL) blotting analysis system (Amersham Pharmacia Biotech, Buckinghamshire, UK). The following antibodies were used for analysis: anti-EZH2 (5246, Cell Signaling, Danvers, MA), anti-PARP (9542, Cell Signaling, Danvers, MA), rabbit polyclonal anti-E-cadherin (A01589, GenScript, Edison, NJ), mouse monoclonal anti-N-cadherin (BD, Transduction, San Jose, CA), rabbit polyclonal anti-Vimentin (A01189, GenScript, Edison, NJ). Anti-MCL-1 (sc-819), anti-FOS (sc-52), anti-p21 (sc-397), anti-Bax (sc-493), anti-β-catenin (sc-1496), and anti-GAPDH (sc-47724) and anti-lamin B1 (sc-20682) were purchased from Santa Cruz Biotechnology (Santa Cruz Biotechnology, Santa Cruz, CA). GAPDH (whole cell lysate) and lamin B (nuclear protein) were blotted to show equal protein loading, respectively.
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2

Western Blot Analysis of EMT Markers

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Cells were lysed in RIPA buffer (150 mM NaCl, 50 mM Tris base, 5 mM EDTA, 1% NP-40, 0.25% deoxycholate, pH 7.4) with protease and phosphatase inhibitors (Roche, Complete Mini). Protein concentrations were measured by the BCA protein assay (23227; Thermo Fisher Scientific, Waltham, MA, USA). Equal amounts (30–50 μg) of the protein were electrophoresed by SDS-PAGE, transferred to NC membranes, and incubated with the following primary antibodies: anti-β-actin antibody (Cell Signaling Technology, Danvers, MA, USA), rabbit polyclonal anti-E-cadherin (A01589; GenScript, Edison, NJ, USA), mouse monoclonal anti-N-cadherin (BD Transduction, San Jose, CA, USA), rabbit polyclonal anti-vimentin (A01189; GenScript), rabbit monoclonal anti-β-catenin (8480; Cell Signaling Technology), rabbit monoclonal anti-Snail (3879; Cell Signaling Technology), and rabbit monoclonal anti-Twist (ab50581; Abcam, Cambridge, MA, USA). The primary antibody incubation was followed by incubation with an HRP-conjugated secondary antibody. The bound antibodies were detected using enhanced chemiluminescence reagent (32109; Thermo Fisher Scientific).
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