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3 protocols using anti tp53

1

Western Blotting for Cellular Proteins

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The RIPA buffer with protease inhibitor and phosphatase inhibitor (Sigma-Aldrich, USA) was used to extract total protein of 786-O cells. We used 10% SDS-PAGE to resolve the total protein and transferred the SDS-PAGE to PVDF membrane (Millipore, USA). Then, membranes were blocked by 5% non-fat milk and incubated with primary antibodies at 4°C for overnight. After washing, secondary antibody was used to incubated the membranes at room temperature for 2 h. Bands were visualized using an enhanced chemiluminescence (ECL) kit (Bio-rad, USA) and detected by BIO-RAD ChemiDoc MP Imaging System (Bio-Rad, USA).
Western blotting was performed using the following antibodies: anti-TOP2A, 1:1000 (Proteintech); anti-CDK1, 1:1000 (Abcam); anti-CDK2, 1:1000 (Abcam ); anti-CCNA1/2, 1:2000 (Abcam); anti-p-TP53, 1:1000 (Abcam); anti-TP53, 1:1000 (Abcam). Blotting membranes were stripped and probed again with anti-GAPDH antibodies (Santa) as a loading control.
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2

Immunohistochemical Profiling of Tumor Samples

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Snap frozen tumor blocks were cryo-sectioned through the University of Michigan microscopy and imaging lab. Sections were fixed in 4% formaldehyde and permeabilized with 0.1% triton. Sections were stained with either mouse anti-human nuclear antigen (Millipore), anti-TP53 (abcam), anti-PAX8 (abcam), anti-human mitochondrial antibody (Life Technologies), anti-human CD34 (abcam) or anti-smooth muscle actin-Cy3 antibody (abcam) in 1:100 dilution. Of note, anti-human CD34 antibody used is predicted to detect mouse in addition to human CD34. Goat anti-mouse-Alexa 488 secondary antibody was then applied (Life Technologies). Images were obtained using an Olympus BX41 microscope. Paraffin imbedded tumor tissue was prepared, sectioned and stained through the University of Michigan Microscopy & Image Analysis core.
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3

Western Blot Analysis of Protein Expression

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The predicted target protein expression was detected by western blotting. Briefly, total proteins were extracted from tendon tissue using RIPA lysis buffer (Applied Biosystems, MA, USA). Then, the proteins were separated by sodium dodecyl sulfate-polyacrylamide gel electrophoresis and transferred to a polyvinylidene fluoride membrane (Millipore, MA, USA). The membranes were blocked with 5% skimmed milk and incubated with primary antibodies anti-EGFR, anti-TP53, anti-AKT1, anti-MYC, and anti-GAPDH (1 : 1,000, Abcam, UK) at 4°C overnight. After washing with PBS, the membranes were incubated with a secondary antibody (1 : 1,000, Abcam). Enhanced chemiluminescent reagents (Millipore, MA, USA) were used to detect the protein bands. GAPDH was used as an internal control.
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