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Phospho erk1 2 antibody

Manufactured by Cell Signaling Technology
Sourced in United States

Phospho-ERK1/2 antibody is a laboratory reagent designed to detect and quantify the phosphorylated forms of extracellular signal-regulated kinase 1 and 2 (ERK1/2) proteins. It is used to monitor the activation state of the ERK1/2 signaling pathway in various experimental systems.

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10 protocols using phospho erk1 2 antibody

1

Evaluating ERK1/2 Phosphorylation in mESCs

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WT and Nmt1−/− mESCs grown in 2iLIF were washed twice with PBS and incubated for 30 min or 6 h in N2B27 + 12 ng/ml bFGF, put on ice, harvested, and lysed in RIPA buffer (50 mM Tris, pH 7.5, 150 mM NaCl, 1% IGEPAL, 0.5% sodium deoxycholate, 0.1% SDS, 2 mM EDTA) with fresh cOmplete Protease Inhibitor Tablet (Roche) and Phosphatase Inhibitor Tablet (Roche). Ten microgram of cell lysate was resolved on a 10% SDS-PAGE and wet-blotted on nitrocellulose. Separate membranes were probed with Erk1/2 antibody (#9102, Cell Signaling Technology) or Phospho-Erk1/2 antibody (#9101, Cell Signaling Technology) 1/1000 in PBST–5% BSA.
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2

Investigating EGFR and Cell Signaling

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Human recombinant EGF and human recombinant TNF were purchased from Peprotech (Rocky Hill, NJ, USA). Gefitinib was kindly provided by AstraZeneca (Tokyo, Japan). TAPI-1 was from Calbiochem (San Diego, CA, USA). The following antibodies were purchased from Cell Signaling Technology (Danvers, MA, USA): Total EGFR antibody (#4267), phospho-EGFR (Y1068) antibody (#3777), total AKT antibody (#9272), phospho-AKT (S473) antibody (#9271), total ERK1/2 antibody (#9102), phospho-ERK1/2 antibody (#4370), phospho-MKK3/6 antibody (#9236), total p38 MAPK antibody (#9212), phospho-p38 MAPK antibody (#9211), TACE antibody (#3976), and β-actin antibody (#4970). Meanwhile, antibodies specific to total MKK 3/6 (sc-13069) was purchased from Santa Cruz Biotechnology, Dallas, TX, USA. Cetuximab was purchased from Showa University Hospital (Shinagawa, Tokyo, Japan). Materials used for western blot analysis were from Bio-Rad Laboratories (Richmond, CA, USA). Dulbecco’s modified Eagle medium (DMEM) and all other materials were purchased from Sigma Chemical (St. Louis, MO, USA) unless otherwise stated. All pharmacological inhibitors and agonists were dissolved in DMSO and added to the medium with a final DMSO concentration of <0.1%.
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3

Phospho-Erk1/2 Immunohistochemistry in Xenografts

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Immunohistochemistry was performed on formalin-fixed paraffin-embedded tumor specimens from cell-derived xenografts. A standard multimer/diaminobenzidine (DAB) detection protocol was performed on Ventana BenchMark ULTRA Automated stainer as previously described54 (link), with appropriate negative and positive controls. Phospho-Erk1/2 antibody (Cell Signaling Technology #9101, 1:200 dilution) was used. Images were taken under Leica DMi8 microscope.
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4

Phospho-ERK1/2 Immunostaining and Western Blot

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Immunostaining was performed as described above, using phospho-ERK1/2 antibody (Thr202/Tyr204) (1:800, D13.14.4E, Cell signaling, Danvers, USA). For the western blot analysis, total tumor lysates were generated as previously described [20 (link)]. Thirty micrograms of protein per sample were separated electrophoretically in 4–15 % precast SDS polyacrylamide gels and transferred to precut nitrocellulose membranes using the Trans-Blot® turbo™ Transfer Starter System (all Bio-Rad). Chemiluminescence and colorimetric detection were performed using ChemiDoc™ MP Imaging System and horseradish peroxidase conjugated rabbit polyclonal anti-human p-ERK1/2 (Thr202/Tyr204), ERK1/2 (1:1000) detected with peroxidase-conjugated secondary anti-rabbit antibody, respectively (1:1000; Cell Signaling Technology) and HRP conjugated mouse monoclonal antibody anti-human β-Actin (S125; all 1:1000), followed by chemiluminescence solution (Clarity™ Western Chemiluminescent HRP Substrate; Bio-Rad).
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5

Antibody-Mediated Signaling Pathway Analysis

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HH cells were cultured in six-well plates in the presence or absence of anti-human CD147 antibody (1 µg/mL; Biolegend) or anti-human CypA antibody (0.7 µg/mL; Abcam) for 1, 3, or 6 h. After collecting proteins from HH cells, equal amounts of proteins were subjected to 4–12% NuPage Bis-Tris Gels (Invitrogen, Waltham, MA, USA) at 200 V for 20 min. The proteins were then transferred onto polyvinylidene fluoride membranes (Invitrogen) and blocked in 2% skim milk powder with 0.05% Tween-20 (Sigma-Aldrich, St. Louis, MO, USA) in Tris-buffered saline. The membranes were probed with Akt Antibody (Cell Signaling Technology, Danvers, MA, USA), Phospho-Akt Antibody (Cell Signaling Technology), ERK1/2 Antibody (Cell Signaling Technology), Phospho-ERK1/2 Antibody (Cell Signaling Technology), p38 MAPK Antibody (Cell Signaling Technology), Phospho-p38 MAPK Antibody (Cell Signaling Technology), SAPK/JNK Antibody (Cell Signaling Technology), Phospho-SAPK/JNK Antibody (Cell Signaling Technology), or β-actin Antibody (Cell Signaling Technology) as primary antibody overnight at 4 °C, followed by incubation in secondary antibody for 30 min at room temperature. Visualization was performed by SuperSignal West Femto Maximum Sensitivity Substrate (Thermo Scientific, Waltham, MA, USA).
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6

Characterizing GPCR Signaling Pathways

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Morphine was a kind gift from the University of Sydney, Australia. Pregabalin and gabapentin were purchased from Tocris, Australia. Forskolin was provided by Ascent Scientific Ltd. Culture reagents and buffer salts were supplied by Sigma Aldrich (Castle Hill, Australia) or Thermo Fisher Scientific (Waltham, MA, USA). The CAMYEL plasmid encoding the cAMP sensor YFP-EPac-RLuc was originally from ATCC (MBA-277). Phospho-ERK1/2 antibody and anti-rabbit IgG HRP linked antibody were from Cell Signaling Technologies (Danvers, MA, USA). Antibiotics were from Invivogen (San Diego, CA, USA) and coelenterazine h was from Promega (Alexandria, Australia). The membrane potential dye was purchased from Molecular Devices, CA.
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7

Western Blot Analysis of ERK5, ERK1/2, c-Myc

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Blots were developed by enhanced chemiluminescence (ECL) according to manufacturer’s instructions (Cell Signaling Tech) and imaged with a LAS-4000 imaging system (Fugifilm Life Science). The following antibodies were used: ERK5 antibody (Abcam), phospho-ERK1/2 antibody (Cell Signaling Technology), ERK1/2 antibody (Cell Signaling Technology), c-Myc antibody (Abcam). β -tubulin antibody (Abcam) was used to normalize the amount of analyzed samples. Horseradish peroxidase (HRP)-conjugated secondary antibodies were purchased from Cell Signaling Technology.
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8

FGF5 and FGFR Signaling Pathway

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Recombinant Human FGF5 (R&D, 237-F5), anti-FGF5 antibody (Abcam, ab88118), anti-FGFR1 antibody (Abcam, ab10646), anti-FGFR2 antibody (Abcam, ab10648), CD206 antibody (R&D, AF2535), Phospho-ERK1/2 antibody (Cell Signaling, #9101), Total-ERK1/2 antibody (Cell Signaling, #9102), N-cadherin (Becton-Dickinson, 610920) and GAPDH antibody (EMD Millipore, MAB374) were used. Hoechst and species-specific secondary antibodies conjugated with Alexa Fluor 488 or 568 dyes were purchased from Invitrogen. Horseradish peroxidase (HRP) conjugated secondary antibodies for western blotting were purchased from Sigma.
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9

Western Blot Analysis of Cell Signaling

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Protein samples were separated by 10% sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), transferred to NC membranes, and blocked with TBST of 5% skim milk for 1 hour. The membranes were washed with TBST and then incubated with the specific primary antibody for 6 hours at 4°C. The membranes were then incubated for 1 hour at room temperature in secondary and the signal was detected by chemiluminescence (Bio rad, USA). The primary (1:1000) and secondary (1:10000) antibodies were purchased from Cell Signaling Technology, USA and listed as follows: GAPDH antibody(#2118), stat3 antibody(#12640), phospho-stat3 antibody(#98543), SAPK/JNK antibody(#9252), phospho-SAPK/JNK antibody(#4668), p65 antibody(#4764), phospho-p65 antibody(#3033), IKKα antibody(#2682), phospho-IKKα/β antibody(#2697), IκBα antibody(#4812), phospho-IκBα antibody(#2859), p38 MAPK antibody(#8690), phospho-p38 MAPK antibody(#4511), Erk1/2 antibody(#4695), phospho-Erk1/2 antibody(#4370) and HRP-linked goat anti-rabbit IgG(#7074).
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10

Resolvin D1 Attenuates Inflammation

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LPS (Escherichia coli, 0111:B4) and fetal bovine serum (FBS) were purchased from Sigma (St. Louis, MO, USA). 17(R)-Resolvin D1 was obtained from Cayman (Ann Arbor, MI, USA). LPS and AT-RvD1 were dissolved in HyClone Dulbecco’s phosphate-buffered saline (PBS) from Thermo Scientific (West Palm Beach, FL, USA). Serum Creatinine and Blood Urea Nitrogen (BUN) Detection Kit were obtained from Arbor Assays (Ann Arbor, Michigan, USA). Mouse interleukin-6 (IL-6) enzyme-linked immunosorbent assay (ELISA) kits were purchased from BioLegend (San Diego, CA, USA). FITC-conjugated anti-mouse Ly-6G (Gr-1) antibody was purchased from eBioscience (San Diego, CA, USA). Goat anti-ICAM-1, VCAM-1 and Claudin-4 antibodies were obtained from Santa Cruz (Dallas, Texas, USA). Phospho-IκBα, phospho-STAT3, phospho-Erk1/2 antibody, IκBα, STAT3, Erk1/2 and β-actin antibodies were purchased from Cell Signaling Technology (Boston, MA, USA). Excell Plus ready to use histological tissue fixative was ordered from American MasterTech (Lodi, CA, USA).
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