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3 protocols using anti cdk6

1

Western Blot Analysis of Cell Signaling

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Cells were collected and lysed with cell lysis buffer for western blotting (Beyotime, Haimen, China). The proteins (30 μg per lane) were separated on 12% SDS-polyacrylamide gels and transferred on a polyvinylidene fluoride membrane (Millipore, Billerica, MA, USA). Immunoblotting of the membrane was performed using the following primary antibodies: anti-CDK6 (Boster, Wuhan, China), anti-cyclin D1 (Affinity, Cincinnati, OH, USA), anti-MMP-2 (Boster), anti-MMP-9 (Boster) and anti-β-actin (4 A Biotech, Beijing, China). The signals were revealed after incubation with the recommended secondary antibodies using an Odyssey Infrared Imaging System (LI-COR, Lincoln, NE, USA). β-actin was used as the control.
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2

Sorafenib and FOXO3a Regulation in Apoptosis

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PD was purchased from Must Bio-Technology Co., Ltd. (Chengdu, China) and sorafenib was purchased from Selleckchem (Houston, TX, USA). Fetal bovine serum (FBS) was purchased from Bioind (Biological Industries, BeitHaEmek, Israel). The anti-FOXO3a, anti-FasL, anti-Bim, anti-TRAIL, anti-Akt and anti-Ubiquitin antibodies were purchased from Cell Signaling Technology, Inc. (Danvers, MA, USA). The anti-p-Akt, anti-ERK and anti-p-ERK antibodies were obtained from Abcam (Shanghai, China). The anti-Caspase 3, anti-Cleaved Caspase 3, anti-Caspase 3 and anti-PARP antibodies were obtained from Beyotime Biotechnology, Inc. (Shanghai, China). The anti-CDK4, anti-CDK6 and anti-cyclin D antibodies were obtained from Boster Biological Technology, Inc. (Wuhan, China). The Z-VAD-FMK, MG132, pictilisib and MK2206 were purchased from Selleckchem (Houston, TX, USA). Lipofectamine™ 2000 was purchased from Invitrogen (Shanghai, China). The shRNA-FOXO3a plasmid, cDNA-Akt plasmid and cDNA-FOXO3a were purchased Shanghai GeneChem Co., Ltd (Shanghai, China).
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3

Protein Extraction and Western Blot Analysis

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Proteins were extracted using NP40 buffer (Beyotime Institute of Biotechnology, China) supplemented with protease inhibitor phenylmethanesulfonyl fluoride (PMSF; Roche, Switzerland). The protein concentrations were calculated using the bicinchoninic acid (BCA) protein assay kit (Beyotime Institute of Biotechnology, China). Equivalent amounts of 30 µg protein samples were isolated using 10% sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE). Then, western blot analysis was performed following a standard procedure with the primary antibodies: anti-p21 (1:1000; Cell Signaling Technology, USA), anti-cyclin D1 (1:500; Boster, China), anti-CDK4 (1:500; Boster), anti-CDK6 (1:500; Boster), and anti-E-cadherin (1:1000; Cell Signaling Technology). The anti-β-Actin (Boster) was used as an internal control at 1:500 dilution. And then, protein bands were incubated with secondary antibodies (1:5000) conjugated with horseradish peroxidase (HRP) and visualized using the enhanced chemiluminescence (ECL) assay kit.
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