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2 protocols using ab216262

1

Immunofluorescence Analysis of Spinal Chondrocytes

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Spine tissues of P7 CKO and WT newborn mice were collected, and 6-μm frozen sections were prepared. The sections were permeabilized with 0.1% Triton X-100 for 5 min and blocked in 5% BSA for 30 min at room temperature. Then, sections were incubated with primary antibodies against mouse MAPK7 (Cell Signaling Technology, 3372s; 1:200), COL10A1 (Abcam, ab49945; 1:500), RUNX2 (Abcam, ab192256; 1:400), MMP13 (Abcam, ab39012; 1:400), PTEN (Cell Signaling Technology, 9559s; 1:400), p-AKT (Cell Signaling Technology, 9018s; 1:200), MEF2C (Cell Signaling Technology, 5030s; 1:200), HIF1α (Cell Signaling Technology, 36169s; 1:200), and Cre recombinase (Abcam, ab216262; 1:500) overnight at 4 °C. The following incubation with the secondary antibody Alexa Fluor 594 goat anti-rabbit IgG (Invitrogen, S11227; 1:1000) was performed at room temperature for 1 h. Nuclei were labeled with DAPI (Sigma, SLCJ8103) for 5 min. The immunofluorescence staining images were captured with fluorescence microscopy (Olympus, BX63, Japan) and quantified using Image J software.
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2

Protein Analysis in Mouse Tissues

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For protein analysis, protein samples (3 mice/group) were harvested from the three tissue regions collected for protein assay and immunoblotting. Brain tissue samples were homogenized in a radioimmunoprecipitation assay (RIPA) buffer containing protease inhibitors, followed by bicinchoninic acid assay. Equal amounts of proteins extracts were run on 10% SDS-PAGE, followed by immunoblotting analysis. Antibodies for YY1, Cre recombinase, p53, Bax, Bcl-2, caspase-3, CXCL10, TNF-α, and β-actin at 1:1000-1:2000 dilution were used, followed by horseradish peroxidase-conjugated secondary antibody (1:5000 dilution). Antibodies for YY1 (sc-7341), p53 (sc-126), caspase-3 (sc-56053), CXCL10 (sc-374092), TNF-α (sc-52746), Bax (sc-7480), Bcl-2 (sc-7382), and β-actin (sc-47778) were obtained from Santa Cruz Biotechnology and antibody for Cre recombinase (ab216262) were from Abcam. All blots were developed using a West Pico PLUS chemiluminescence substrate detection kit (Pierce, Rockford, IL), followed by blot imaging and quantification with the Bio-Rad ChemiDoc Imaging System and Image Laboratory Software version 5.2.1 (Bio-Rad), respectively.
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