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2 protocols using bcl2 monoclonal antibody

1

Evaluating P53 and BCL2 Protein Regulation

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The MCF-7 and MDA-MB-231 cells following 24 h treatment with AKBA, ABA or BA were trypsinized and lysed with RIPA buffer and protease inhibitors (ThermoFisher Scientific). The protein concentrations were checked by Pierce™ Rapid Gold BCA Protein Assay Kit (ThermoFisher Scientific). The lysates were incorporated with Laemmli sample buffer. Western blot analysis of P53 and BCL2 was achieved by loading 50 μg of total proteins and were run by 10% acrylamide gel (Bolt Bis–Tris Plus gels) (Invitrogen, USA) at a constant voltage of 200 V. Following SDS-PAGE, the proteins from the gel were transferred to Nitrocellulose membranes by Pierce power blotter (ThermoFisher Scientific) with a high M.W. pre-programmed approach. The membranes were later blocked with BSA dissolved in TBS/Tween-20 (5% BSA, 0.5% Tween-20 for 1 h), accompanied by immunoblotting with P53 monoclonal antibody (1/1500 dilution) and BCL2 monoclonal antibody (1/50 dilution) (ThermoFisher Scientific) as well as beta actin monoclonal antibody as a loading control (ThermoFisher Scientific) for overnight. Afterward, blotting was followed by incubation with goat anti-mouse IgG horseradish peroxidase-conjugated secondary antibody (ThermoFisher Scientific, 1/5000 dilution). The bands were detected using enhanced chemiluminescence (Abcam, USA) with the iBright™ 1500 Imaging System (Invitrogen)52 (link).
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2

UVB-Induced Apoptosis Pathway Analysis

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Photolyase was applied to the cells for 2 h, followed by UVB irradiation for 2 min and 15 s and culturing for another 6 h. Cell lysates were collected using RIPA lysates (Beyotime, Shanghai, China). Primary antibodies were incubated overnight at 4 °C, followed by secondary antibodies for 1 h at room temperature. The following antibodies were used: BCL-2 monoclonal antibody (ThermoFisher Scientific, Cambridge, MA, USA); Bax monoclonal antibody (ThermoFisher Scientific; USA33-6400); caspase 3 monoclonal antibody (ThermoFisher Scientific, 700182); and β-Actin monoclonal antibody (ThermoFisher Scientific, MA1-140).
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