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7 protocols using phospho plc γ1 tyr783

1

T Cell Activation Signaling Pathway

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The anti-Fas (IgM) antibody, anti-phospho-LAT-Tyr226, and rabbit polyclonal anti-human LAT were from Merck-Millipore; anti-PLC-γ1 mAb, anti-Lck, and anti-Erk were from Santa Cruz Biotechnology (Santa Cruz, CA, USA); antibodies binding phospho-Erk, phospho-PLC-γ1-Tyr783, phospho-ZAP70-Tyr319, phospho-MEK-Ser221, phospho-LAT-Tyr191, and anti-MEK were from Cell Signaling Technology; anti-6His-HRP, anti-Grb2, and anti-phospho-LAT-Tyr132 antibodies were from Abcam (Cambridge, MA, USA); and anti-CD69-APC (allophycocyanin) and anti-β-actin monoclonal antibodies were from Biolegend. The protein synthesis inhibitor cicloheximide was purchased from Merck-Millipore. Stimulations were performed with anti-human CD3 (OKT3; eBioscience) or anti-human CD28 (CD28.2; BD Pharmingen) monoclonal antibodies.
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2

Angiotensin II Signaling in Cardiovascular Cells

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Recombinant rat PDGF was purchased from R&D Systems. Human Ang II, losartan, sunitinib, wortmannin, and DAPT (N‐[N‐(3,5‐Difluorophenacetyl)‐L‐alanyl]‐S‐phenylglycine t‐butyl ester) were purchased from Sigma‐Aldrich. Primary antibodies of phospho‐Akt Ser473, phospho‐Akt Thr308, Akt, phospho‐PLCγ1 Tyr783, PLCγ1, 3‐phosphoinositide‐dependent protein kinase‐1 (PDK1), mammalian target of rapamycin (mTOR), and Notch2 were purchased from Cell Signaling Technology; Hey2 antibody was purchased from Beijing Biosynthesis Biotechnology; antibody of Notch1 used in Western blot was from Santa Cruz Biotechnology; and Notch1 intracellular domain (N1‐ICD) antibody used in immunohistochemistry was from Millipore.
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3

Western Blot Analysis of HER2 Signaling

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All cells were lysed in RIPA buffer (Beyotime) supplemented with protease and phosphatase inhibitors (Roche). Following lysis, the cells were sonicated. Western blotting was performed using standard methods. The blots were probed with the following antibodies: phospho-HER2-Tyr1221/1222 (Epitomics), β-actin (Sigma), phospho-HER2-Tyr877, phospho- HER2-Tyr1248(p-HER2), HER2, PLCγ1, phospho-PLCγ1-Tyr783, PARP, STAT5, phospho- STAT5-Tyr694, AKT, phospho-AKT-Ser473 (pAKT), ERK1/2, phospho-ERK1/2-Thr202/Tyr204, S6, phospho-S6-Ser235/236 (pS6) and phosphor-4E-BP1-Thr37/46 (Cell Signaling Technology).
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4

T-cell Activation Signaling Pathway

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Phorbol 12-myristate 13-acetate (PMA) and ionomycin (were purchased from Sigma-Aldrich (St. Louis, MO, USA) and were prepared in DMSO. Anti-LAT, anti-Lck, anti-PLC-γ, and phospho-Erk antibodies were from Santa Cruz Biotechnology (Heidelberg, Germany); antibodies binding ZAP-70, phospho-ZAP-70-Tyr319, β-actin, phospho-PLC-γ1-Tyr783, and phospho-LAT-Tyr171 were from Cell Signaling Technology (Danvers, MA, USA); anti-Grb2 mAb was from Abcam (Cambridge, MA, USA); and anti-Erk mAb was from BioLegend (San Diego, CA, USA). Stimulations were performed with the anti-human CD3 OKT3 monoclonal antibody (eBioscience, Thermo Fisher Scientific). Staining to assess CD3 expression on the membrane was performed with OKT3 antibody conjugated to APC (BioLegend, San Diego, CA, USA).
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5

T-cell Signaling Pathway Analysis

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The anti-Fas (IgM) antibody was from Merck-Millipore; anti-LAT LAT-01 mAb was from EXBIO (Praha, Czech Republic); anti-LAT 11B.12, anti-PLC- γ, anti-PTP1B, and anti-caspase-3 monoclonal antibodies were from Santa Cruz Biotechnology (Heidelberg, Germany); antibodies binding phospho-Erk, β-actin, phospho-PLC-γ1-Tyr783 and phospho-LAT-Tyr171 were from Cell Signaling Technology; anti-6His-HRP antibody and anti-phospho-LAT-Tyr132 were from Abcam (Cambridge, United Kingdom). The protein synthesis inhibitor cycloheximide was purchased from Merck-Millipore. Stimulations were performed with the anti-human CD3 OKT3 monoclonal antibody (eBioscience).
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6

Signaling Pathway Protein Analysis

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Western blot assays were carried out using established protocols and probed with the following antibodies: phospho-Akt (Ser473) 1:1000 (Cell Signaling 9271), Total Akt 1:1000 (Cell Signaling 9272), phospho-MEK1/2 1:5000 (Cell Signaling 9154), Total MEK1/2 1:5000 (Cell Signaling 9122), p44/42 MAPK (Erk1/2) 1:5000 (Cell Signaling 9101), Total MAPK 1:5000 (Cell Signaling 9102), phospho-FGF Receptor (Tyr653/654) 1:500 (Cell Signaling 3471), FGF Receptor 2 (D4L2V) 1:500 (Cell Signaling 23328), phospho-PLCγ1 (Tyr783) 1:1000 (Cell Signaling 14008), PLCγ1 (D9H10) 1:1000 (Cell Signaling 5690), phospho-FRS2-α (Tyr196) 1:1000 (Cell Signaling 3864), FRS2 1:1000 (abcam 10425), phospho-PI3 Kinase p85 (Tyr458)/p55 (Tyr199) 1:1000 (Cell Signaling 4228), PI3 Kinase p85 (19H8) 1:000 (Cell Signaling 4257), β-actin 1:10000 (Cell Signaling 4967).
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7

Antibody Immunostaining Protocol

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Mouse monoclonal antibodies to GM130 and Golgin97 were from Transduction Laboratories and Molecular Probes, respectively. Sheep anti-TGN46 was purchased from Serotech and mouse anti-PentaHis was from Qiagen. Antibodies against PLCγ1 and phospho-PLCγ1 (Tyr783) were purchased from Cell Signalling. Rabbit polyclonal anti-GFP, anti-FLAG and anti-ectodomain of VSV-G were purchased from Sigma-Aldrich. Cyanine 3-conjugated mouse and rabbit secondary antibodies were from Jackson ImmunoResearch Laboratories and Alexa Fluor 488, 546 and 647-conjugated anti-mouse, anti-rabbit and anti-sheep antibodies were obtained from Molecular Probes. Peroxidase-conjugated secondary antibodies were from Promega.
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