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3 protocols using goat polyclonal anti rabbit igg hrp

1

Regulation of mTOR Signaling Pathway

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The following were purchased from Sigma-Aldrich (Dorset, UK): Dulbecco’s Modified Eagle Medium (DMEM), Penicillin/Streptomycin, MEM non-essential amino acids 100×, 0.25% Trypsin-EDTA, L-glutamine, putrescine, spermidine, spermine. Fetal bovine serum (FBS) was from Gibco by Life Technologies (Sao Paolo, Brazil), mTOR siRNA and negative control were from Fisher Chemical (Loughborough, UK), protease and phosphatase inhibitors cocktail from Roche (Indianapolis, IN, USA), BCA protein assay kit from BioVision (Milpitas, CA, USA). RIPA lysis buffer 10× from Millipore (Burlinton, MA, USA). The following antibodies were purchased from Abcam Biotechnology (Cambridge, UK) and used at the indicated dilutions: rabbit polyclonal anti-actin antibody (ab119716, 1:7, 500 dilution), goat polyclonal anti-rabbit IgG-HRP (ab205718, 1:10,000 dilution). Additionally, mouse monoclonal anti-ODC antibody (sc-398116, 1:100 dilution), mouse monoclonal anti-phospho-4EBP1 (sc-293124, 1:200 dilution), mouse monoclonal anti-phospo-p70S6K (sc-8416, 1:300 dilution), mouse monoclonal anti- eIF4E (sc-271480, 1:300 dilution) and goat anti-mouse IgG-HRP (sc-2005, 1:2,500 dilution) antibodies were from Santa-Cruz Biotechnology (Heidelberg, Germany). Rapamycin and the class 1 dual inhibitors of PI3K and mTORC1, NVP-BEZ235, were from Cayman Chemicals (Ann Arbor, MI, USA).
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2

Western Blot Analysis of Apoptosis and Signaling

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Cells lysates were prepared with radioimmunoprecipitation assay buffer (RIPA) lysis buffer supplement with protease inhibitor cocktail (Calbiochem) and phosphatase inhibitor (Roche). The proteins are electrophoresed on 6–15% SDS-polyacrylamide gel (Beyotime Biotechnology) and transferred onto polyvinylidene fluoride membranes (Millipore, Billerica, MA, USA). The membranes were blocked in the TBS solution (100 mM Tris, 150 mM NaCl, pH 7.6) containing 5% (w/v) skim milk, and 0.5% (v/v) Tween-20 for 1 hour at room temperature. The membranes were incubated with primary antibodies overnight at 4°C followed by incubation with secondary antibodies for 1 hour. Primary antibodies used in this study were antibodies against caspase-3, -8, -9, Bax, pEGFR, pVEGF-R2, pAKT, AKT, and NK-κB, metal matrix protease (MMP) 2, MMP9, β-actin (Cell Signaling Technology, USA), pERK, and ERK (Abcam, UK). Goat polyclonal anti-mouse IgG-horseradish peroxidase (HRP) or goat polyclonal anti-rabbit IgG-HRP were used as secondary antibodies (Abcam, UK). Bands were visualized by chemiluminescence detection kit (Millipore, USA). All experiments were repeated 3 times.
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3

Polyamine Signaling Pathway Analysis

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The following were purchased from Sigma-Aldrich (Dorset, UK): Dulbecco’s Modified Eagle Medium (DMEM), Penicillin/Streptomycin, MEM non-essential amino acids 100×, Trypsin-EDTA, L-glutamine, putrescine, spermidine, and spermine. Foetal bovine serum (FBS) was from Gibco Life Technologies, Sao Paolo, Brazil. The protease and phosphatase inhibitors cocktail were from Roche, Indianapolis, IN, USA. RIPA lysis buffer 10× from Millipore, Burlington, VT, USA. The following antibodies were purchased from Abcam Biotechnology, Cambridge, UK: rabbit polyclonal anti-β-actin (ab119716, 1:7500 dilution), goat polyclonal anti-rabbit IgG-HRP (ab205718, 1:10,000 dilution), goat polyclonal anti-AZ1 (ab223481, 1:300), donkey anti-goat IgG H&L-HRP (ab97110, 1:2000). Mouse monoclonal anti-ODC (sc-398116, 1:100 dilution) and goat anti-mouse IgG-HRP (sc-2005, 1:2500 dilution) antibodies were from Santa-Cruz Biotechnology, Heidelberg, Germany.
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