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4 protocols using ab16885

1

Fyn and Src Kinase Activity in Rat Striatum

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Rat dorsal striatum tissue was homogenized using BioRuptor in 1× IP buffer (150 mM NaCl, 10 mM Tris-HCl pH = 7.4, 1 mM EDTA, 1 mM EGTA, 1% Triton X-100) containing protease and phosphatase inhibitors. Homogenates were pre-cleared using protein G Dynabeads for 1 h at 4 °C. For immunoprecipitation, 1 mg of pre-cleared protein was incubated overnight at 4 °C with 7.5 µg of total Fyn (4023S, Cell Signaling, diluted 1:1000) or 5 µg of total Src (ab16885, Abcam, diluted 1:1000) antibody. Immunocomplexes were pulled down with protein G Dynabeads for 4 h at 4 °C and eluted into Laemmli buffer at 55 °C for 10 min. 50 µg of immunoprecipitated protein was used for western blotting. To determine kinase activity, antibodies against active p(Y418)-Src (ab4816, Abcam, diluted 1:200) and inactive p(Y529)-Src (ab32078, Abcam, diluted 1:1000) were used. In addition, dorsal striatal protein tyrosine kinase activity was also measured using a commercially available kit following the manufacturer’s instructions (Omnia Kinase Assay, KNZ3051, Thermo Fisher).
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2

Protein Kinase Signaling Pathway Analysis

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Dulbecco's modified Eagle's medium, Trypsin-EDTA, and Phospho-FAK (Tyr-397) recombinant rabbit monoclonal antibody (31H5L17 1:1000 dilution) were from Thermo Fisher (Waltham, MA). Antibodies to FAK-Tyr-397 (ab81298, 1:1000 dilution), Pyk2-Tyr-402 (ab4800, 1:1000 dilution), Src (ab16885, 1:1000 dilution), and Src-Tyr-419 (ab185617, 1:1000 dilution) were from Abcam (San Francisco, CA). Antibodies to total FAK (Anti-FAK, clone 4.47, 05–537, 1:1000 dilution) were from EMD Millipore, (Temecula, CA), and Pyk2 (3292 ​s, 1:1000 dilution) was from Cell Signaling Technology (Danvers, MA). Secondary antibodies anti-rabbit 800, anti-mouse 680, and anti-mouse 800 were from LI-COR (Lincoln, NE). Pepsin, >2000 U/mg protein was purchased from MP biomedicals (Irvine, CA). Indomethacin, misoprostol, hydroxyurea, potassium phosphate, sodium hydroxide, pancreatin from porcine pancreas, and collagen I were purchased from Sigma Aldrich (St. Louis, MO). Glacial acetic acid was purchased from Fisher Chemical (Cat# A38S-500). Mini-Ames assay and in vitro ADME (absorption, distribution, metabolism, and excretion) studies were conducted by Pharmaron Inc (Beijing, China). Mouse serum chemistries were performed by the veterinary diagnostic laboratory at Michigan State University (Lansing, MI).
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3

FAK Inhibitor's Impact on Cell Signaling

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The BRACs used in this study were purchased from the New Star Natural Plant Development Company (Jilin, China). The FAK inhibitor, 1,2,4,5-benzenetetramine tetrahydrochloride (Y15), was obtained from Sigma (St. Louis, MO, USA). Fetal bovine serum (FBS) and horse serum were purchased from Gibco-BRL (Grand Island, NY, USA). Dulbecco's modified Eagle's medium (DMEM)/high glucose and DMEM/F12 were purchased from HyClone (Beijing, China). L15 medium was obtained from Keygen Biotech (Nanjing, China). Primary antibodies against FAK (ab40794), phospho-FAK (ab38458, ab81298), Src (ab16885), phospho-Src (ab24789), and p130Cas (ab136514) were purchased from Abcam (Cambridge, MA, USA). Phospho-p130Cas (#4011) antibody was purchased from Cell Signaling Technology (Danvers, MA, USA). Primary antibodies against E-cadherin (610181), vimentin (550513), and fibronectin (610077) were purchased from BD Biosciences (Bedford, MA, USA).
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4

Western Blot Analysis of Protein Markers

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Western-blot was performed as our previous description.14 (link) Aliquots proteins were separated by SDS-PAGE (10% polyacrylamide). Thereafter, proteins were electrophoretically transferred to polyvinylidene difluoride membrane and blocked in 5% BSA and 0.05% Tween 20 in Tris-buffered saline (TBST) for 1 h at room temperature. Membranes were incubated overnight at 4°C with the indicated first antibodies. Membranes were washed (3 times for 5 min each) in TBST and incubated with horseradish peroxidase-conjugated IgG for 1 h at room temperature, followed by additional washes (3 times for 15 min) in TBST. Proteins were visualized by ECL and quantified by densitometric scanning with Image J and analyzed with GraphPad Prism software, and the result was presented by the relative intensity of control condition based on GAPDH normalization for total protein. Antibodies of CD36 (ab133625, ab23680), α7nAChR (ab216485), Src (ab16885) were purchased from Abcam (Cambridge, MA). p-Src-Tyr416 (6943S), p-Src-Tyr527 (2105S), p-Akt473 (9271s), p-Akt308 (9275S), Akt (9272S), p-ERK1/2 (4370S), ERK1/2 (4695S), GAPDH (5174S) were obtained from Cell Signaling (Boston, MA). The anti-mouse (7076) and anti-rabbit (7074) HRP-linked anti-IgGs were purchased from Cell Signaling (Boston, MA).
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