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2 protocols using erk1 2 c 9

1

Western Blot Analysis of Cellular Proteins

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Total cell extracts were obtained by lysing the cells directly using 2× SDS-PAGE sample buffer. Western blotting and processing were then performed as described previously [35 (link)]. The following antibodies were used: mouse monoclonal anti-human pRB (BD Pharmingen); rabbit polyclonal anti-MMP2 and MMP9 (Abcam); rabbit monoclonal p21 (12D1), rabbit polyclonal phospho-Akt (Ser473), rabbit monoclonal pan Akt (Cell Signaling), mouse monoclonal anti-p53 (DO-1), mouse monoclonal anti-β-actin, mouse monoclonal anti-SAP97 (2D11) (Dlg), rabbit polyclonal p130 (C-20) and p107 (C-18), mouse monoclonal p-ERK1/2 (12D4), and ERK1/2 (C-9) were from Santa Cruz.
Immunoblots were developed using Clarity™ Western ECL Substrate (Bio-Rad) and images were captured using the ChemiDoc™ Imaging System (Bio-Rad). Protein band intensities were quantified using ImageJ and normalized with the levels of β-actin, which serves as a loading control.
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2

Quantitative Protein Profiling in Cells

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Protein extractions were performed as previously described28 (link),29 (link). Primary antibodies p-ERK (Thr202/Tyr204, Cell Signaling, #4370S; 1:1000 dilution), ERK1/2 (C-9, Santa Cruz Biotechnology, SC-514302; 1:200 dilution), tyrosine hydroxylase (Abcam, ab75875; 1:1000 dilution), adiponectin (rabbit polyclonal, home-made), Connexin43 (Santa Cruz Biotechnology, SC-6560-R) and α-tubulin (DM1A, Cell Signaling, #3873S) were used. Protein abundance was detected using one of the following secondary antibodies: goat anti-mouse IRDye 680RD (LI-COR Biosciences, 926-68070), goat anti-rabbit IRDye 800CW (LI-COR Biosciences, 925-32211) at 1:10,000 dilutions. Antibody decorated membranes were then visualized on a LI-COR Odyssey infrared scanner (LI-COR Biosciences). The scanned data were analyzed using Odyssey Version 3.0 software (LI-COR Biosciences).
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