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4 protocols using anti cdk2

1

Comprehensive Immunoblotting Analysis

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Western blotting was performed according to a standard method as previously described [20 (link)]. The antibodies used for immunoblotting were as follows: anti-CITED1, anti-cyclin B1, anti-cyclin D3, anti-cyclin A2, anti-cyclin D1, anti-cyclin E1, anti-CDK4, anti-CDK6 (Abcam, Cambridge, MA), anti-cyclin D2, anti-CDK2 (BD Pharmingen, San Diego, CA), anti-cyclin E2, anti-p21Cip1, anti-p27Kip1 (Cell Signaling Technology, Beverly, MA), and anti-α-tubulin (Sigma-Aldrich, St. Louis, Missouri). The bands were quantified using Quantity One software (Bio-Rad, Hercules, CA).
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2

Western Blot Analysis of Cell Cycle Regulators

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Western blotting analysis was performed according to a standard method previously described [31 (link)], using anti-SOSTDC1, anti-cyclin B1, anti-cyclin D3 (Abcam, Cambridge, MA), anti-cyclin A2, anti-cyclin D1, anti-cyclin E1, anti-CDK4, anti-CDK6 (Epitomics, Burlingame, California), anti-cyclin D2, anti-CDK2 (BD Pharmingen, San Diego, CA), anti-cyclin E2, anti-p21Cip1, anti-p27Kip1, anti-p-Rb Ser608, anti-p-Rb Ser807, anti-Rb (Cell Signaling, Beverly, MA). When re-probing, blotted membranes were stripped and re-blotted with an anti-α-tubulin mouse monoclonal antibody (Sigma–Aldrich, St. Louis, MO) as a loading control.
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3

Western Blotting for Cell Cycle Proteins

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Western blotting was performed according to a standard method as described previously [32 (link)]. Antibodies for immunoblotting were as follows: anti-SOSTDC1, anti-cyclin B1, anti-cyclin D3 (Abcam, Cambridge, MA), anti-cyclin A2, anti-cyclin D1, anti-cyclin E1, anti-CDK4, anti-CDK6 (Epitomics, Burlingame, California), anti-cyclin D2, anti-CDK2 (BD Pharmingen, San Diego, CA), anti-cyclin E2, anti-p21Cip1, anti-p27Kip1, anti-p-pRb Ser608, anti-p-pRb Ser807, anti-pRb (Cell Signaling, Beverly, MA) and anti-α-tubulin (Sigma-Aldrich, St. Louis, Missouri).
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4

Western Blot Analysis of MCF-7 Proteins

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Total cellular proteins from MCF-7 cells were extracted using RIPA lysis buffer (Beyotime Institute of Biotechnology). Protein concentration was determined using a bicinchoninic acid assay (Beyotime Institute of Biotechnology), and 10 µg protein/lane was separated by 10% SDS-PAGE followed by transferring to polyvinylidene fluoride membranes (EMD Millipore). The membranes were blocked with 5% non-fat milk for 1 h and incubated at 4°C with the following primary antibodies overnight: Anti-MYB (cat. no. ab191064; 1:1,000; BD Biosciences), anti-E-cadherin (cat. no. ab269767; 1:1,000; BD Biosciences), anti-N-cadherin (cat. no. ab18203; 1:1,000; BD Biosciences), anti-Bcl-2 (cat. no. ab194583; 1:1,000; BD Biosciences), anti-Bax (cat. no. ab104156; 1:1,000; BD Biosciences), anti-cyclin A1 (cat. no. ab53699; 1:1,000; BD Biosciences), anti-CDK2 (cat. no. ab64669; 1:1,000; BD Biosciences) and anti-GAPDH (cat. no. ab9485; 1:1,000; Affinity Biosciences). The membranes were washed three times using PBS, incubated with goat anti-rabbit IgG secondary antibody conjugated to horseradish peroxidase (cat. no. ab7090; 1:5,000; Abcam) for 1 h at room temperature and visualized using a Pierce ECL Western Blotting kit (Pierce; Thermo Fisher Scientific, Inc.). The protein expression was quantified using Image-Pro® Plus software (version 6.0; Media Cybernetics, Inc.).
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