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2 protocols using p p65 ser536

1

Comprehensive Protein Analysis in Cardiac Cells

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Primary antibodies were against p19 (NB200‐106, Novus Biologicals, CO, USA), p21 (#2947, Cell Signaling Technology, Beverly, MA, USA), p53 (#2424, Cell Signaling Technology, USA), p16 (ab211542, Abcam, Cambridge, MA, USA), renin (#5250, Cell Signaling Technology, USA), Ang II (NBP1‐31127, Novus Biologicals, USA), ANP (#AB5490, Millipore, MA, USA; sc‐515701, Santa Cruz Biotechnology Inc., Dallas, TX, USA, USA), BNP (#DF6902, Affinity Biosciences, OH, USA; ab19645, Abcam, USA), GATA4 (#19530, Proteintech, IL, USA; sc‐25310, Santa Cruz Biotechnology Inc., USA), LC3B (#NB600‐1384, Novus Biologicals, USA), p62 (#39749, Cell Signaling Technology, USA), Bmi‐1 (#5856, Cell Signaling Technology, USA; 66161‐1‐Ig, Proteintech, USA), RING1B (#5694, Cell Signaling Technology), NF‐κB‐p65 (sc‐8008, Santa Cruz Biotechnology Inc., USA; #8242, Cell Signaling Technology, USA), p‐p65 (Ser536) (ab76302, Abcam, USA), IκB‐α (AF1282, Beyotime Biotechnology, Shanghai, China), p‐IκB‐α (Ser32) (sc‐8404, Santa Cruz Biotechnology Inc., USA), p‐Chk2 (Thr68) (PA5‐104715, Invitrogen Inc. CA, USA), SOD‐2 (NB100‐1992, Novus Biologicals, USA), HSC70 (10654‐1‐AP, Proteintech, USA), p‐ULK1 (Ser757) (#14202, Cell Signaling Technology, USA) and ULK1 (sc‐390904, Santa Cruz Biotechnology, USA). β‐actin (AP0060, Bioworld Technology Inc., MN, USA) was loading control for total protein.
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2

Western Blot Analysis of NP Cells

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Intervertebral disc tissue or NP cells were lysed by using RIPA lysis buffer (Beyotime, China) with 1% PI on ice. The protein concentration was determined by using a bicinchoninic acid (BCA) assay (Beyotime, China). 30 ​μg proteins of each sample were electrophoresed by performing sodium dodecylsulphate polyacrylamide gel electrophoresis (SDS-PAGE) on 10% gels. The separated proteins were transferred onto a PVDF membrane and blocked with 5% bovine serum albumin (BSA, gibco, USA). Then the membranes were incubated overnight at 4 ​°C with primary antibodies against aggrecan (1:1000 dilution; Wanleibio, China), COL2 (1:1000 dilution; Wanleibio, China), MMP13 (1:1000 dilution; Proteintech, USA), TNF-α (1:1000 dilution; Proteintech, USA), IL-1β (1:1000 dilution; Wanleibio, China), p65 (1:1000 dilution; Abmart, China), p-p65 (Ser536) (1:1000 dilution; Abcam, UK), acetyl-p65 (Lys310) (1:1000 dilution; Abcam, UK), Sirt1 (1:1000 dilution; Proteintech, USA), Prx-1(1:1000 dilution; Proteintech, USA) and β-actin (1:10000 dilution; Proteintech, USA). Finally, the membranes were washed and incubated with HRP-conjugated secondary antibody (1:5000 dilution; Beyotime, China) at room temperature for 2 ​h. Immunoreactive bands were visualized with ECL chemiluminescence (ChemiDoc XRS+, Bio-Rad, USA) and analyzed by Image lab.
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