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Hrp conjugated anti rabbit or anti mouse antibodies

Manufactured by Jackson ImmunoResearch
Sourced in United Kingdom, United States

HRP-conjugated anti-rabbit or anti-mouse antibodies are secondary antibodies that are conjugated with the enzyme Horseradish Peroxidase (HRP). These antibodies are used to detect and visualize the presence of primary antibodies that are raised against rabbit or mouse antigens in various immunoassay techniques, such as Western blotting, ELISA, and immunohistochemistry.

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6 protocols using hrp conjugated anti rabbit or anti mouse antibodies

1

Signaling Pathway Analysis in Purified B Cells

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Purified B cells were left at 37°C for 10 min in chamber buffer (PBS, 0.5% FCS, 1 g/liter d-Glucose, 2 mM MgCl2, and 0.5 mM CaCl2) to equilibrate before stimulation. They were then stimulated for various times with 10 µg/ml anti-IgM F(ab′)2 fragment (Jackson ImmunoResearch Laboratories), 10 µg/ml anti-κ (HB558; American Type Culture Collection), or 1 µg/ml CD40L (R&D Systems).
For Cdc42-GTP pull-down experiment, a commercial kit (Cytoskeleton Inc.) was used following the manufacturer’s instructions, specifically using 107 B cells for 15 µg of beads. For immunoblotting, stimulated cells were then lysed in lysis buffer (20 mM Tris-HCL, pH 8.0,150 mM NaCl, 5 mM EDTA, Protease Inhibitor cocktail [Roche], 10 mM NaF, 1 mM Na3VO4, and 1% NP-40) for 15 min on ice, and samples were loaded into 4–20% (for Cdc42-GTP pull-down) or 12% (for all other applications) for electrophoresis. Proteins were detected with antibodies against pErk, pAkt (S473), pCD19, pSyk, pSrc, totalErk, pSTAT3 (Ser), and Cdc42 (all from Cell Signaling Technology) using the secondary HRP-conjugated anti–rabbit or anti–mouse antibodies (Jackson ImmunoResearch Laboratories).
Blot densitometry analysis was performed using the ImageJ (National Institutes of Health) software.
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2

OATP Protein Detection in Cell Lysates

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Whole cell lysates of Sf9 or A431 cells (10–50 µg) were separated on 7.5% Laemmli SDS-PAGE gels and transferred onto PVDF membranes. Immunoblotting was performed as described in36 (link). Membranes were incubated overnight with OATP-specific antibodies or anti-β-actin antibody (A1978, Sigma). The antibodies used for the detection of OATP1B1 and 2B1 were kind gifts from Dr. Bruno Stieger (Department of Clinical Pharmacology and Toxicology, University Hospital, 8091 Zurich, Switzerland)55 (link). The antibody raised against OATP1B3 (AMAb91231) was purchased from Atlas Antibodies (Stockholm, Sweden). Secondary antibodies used were 10,000–20,000x diluted, HRP-conjugated anti-rabbit or anti-mouse antibodies (Jackson ImmunoResearch, Suffolk, UK). Luminescence was detected using the Luminor Enhancer Solution kit by Thermo Scientific (Waltham, MA, US).
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3

B Cell Signaling Pathway Analysis

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Purified B cells were left at 37°C for 15 min in chamber buffer (PBS, 0.5% FCS, 1g.L-1 D-Glucose, 2mM MgCl2, 0.5mM CaCl2) to equilibrate prior to stimulation. They were then stimulated for various times with 10μg.mL anti-IgM (Fab2)’ fragment (Jackson Immunoresearch). Stimulated cells were lysed in lysis buffer (20mM Tris-HCl, pH 8, 150mM NaCl, 5mM EDTA, Protease Inhibitor cocktail (Roche), 10mM NaF, 1mM Na3VO4, 1% NP40) for 30 min on ice and samples loaded into Tris Glycin gels prior to electrophoresis using the miniprotean system (BioRad). Proteins were detected with antibodies against pErk, pAkt (S473), pCD19, pSyk, pSrc, total Erk (all from Cell Signalling Technology), tubulin (Sigma Aldrich) or TC10 (Proteintech) using the secondary HRP conjugated anti-rabbit or anti-mouse antibodies (Jackson Immunoresearch). Blot densitometry analysis was performed using the Image J software.
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4

Western Blot Analysis of Protein Signaling

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Total protein was extracted using RIPA lysis buffer supplemented with EDTA-free Protease Inhibitor Cocktail (#4693132001; Roche, Germany), and were boiled in SDS loading buffer. 10 μg protein was separated by 10% SDS-PAGE, followed by transferring onto 0.45 μm nitrocellulose membranes (Millipore, USA). The membranes were blocked with 5% non-fat milk in PBST and incubated with primary antibodies against ST3GAL6 (1/500, ab106527; Abcam), GATA3 (1/500, #558686; BD, USA), EGFR (1/1000, #4267; Cell Signaling Technology (CST), USA), phospho-EGFR (Tyr1068) (1/1000, #3777; CST), AKT (pan) (1/1000, #4691; CST), phospho-AKT (Ser473) (1/1000, #4060; CST), p44/42 MAPK (ERK1/2) (1/1000, #4695; CST), phospho-p44/42 MAPK (ERK1/2) (Thr202/Tyr204) (1/1000, #4370; CST), STAT3 (1/1000, #9139; CST), phospho-STAT3 (Tyr705) (1/1000, #9145; CST), or GAPDH (1/1,000, sc-47724; Santa Cruz Biotechnology, USA) at 4℃ overnight. After rinse with PBST three times, the membranes were incubated with HRP-conjugated anti-rabbit or anti-mouse antibodies (1/5,000; Jackson ImmunoResearch, USA; Table S1), followed by the detection with the Super Signal West Pico PLUS Chemiluminescent Substrate (Thermo Scientific, USA).
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5

Protein Extraction and Western Blotting

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In vitro cell lysates were collected following treatment and first washed in 1X PBS followed by rapid lysis on ice using 1X RIPA buffer (Cell Signaling Technology). Lysates were then sonicated and supernatant removed after centrifugation at 4°C. For in vivo studies, tumors were procured and 5–10 mg of tissue was homogenized in 1X RIPA on ice, followed by sonication and centrifugation in an identical manner. For western blotting of nuclear lysates, isolation was performed using Nuclear Extraction Kit (Abcam) per manufacturer’s protocol. Protein quantification was performed using Pierce BCA Protein Assay Kit (Thermo Fisher) as per the manufacturer’s protocol. 12.5–40 μg of protein was loaded per lane and separated by SDS-PAGE. Membranes were then transferred to a polyvinylidene difluoride (PVDF) membrane, blocked in 5% milk solution, and incubated with indicated antibodies (Supplementary Table S1) overnight at 4°C. Secondary conjugation was performed using HRP-conjugated anti-rabbit or anti-mouse antibodies (Jackson ImmunoResearch Laboratories) followed by development with chemiluminescent substrate (Thermo Fisher) and imaged using ChemiDoc Imaging System (BioRad). Immunoblots were quantified using ImageJ (NIH, Bethesda, MD) and graphed using Prism Software (GraphPad Software Inc.).
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6

Tumor Tissue Lysis and Western Blotting

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Cell lysis and Western blotting were done as described previously (10 (link)). For in vivo studies, tumors were procured, and 5–10 mg of tissue was homogenized in 1X RIPA buffer (Cell Signaling Technology). Lysates were then sonicated, and the supernatant was removed after centrifugation at 4°C. Protein quantification was performed using Pierce BCA Protein Assay Kit (Thermo Fisher Scientific) as per the manufacturer's protocol. Protein (12.5–40 μg) was loaded and separated by SDS-PAGE. Membranes were then transferred to a polyvinylidene difluoride membrane, blocked in 5% milk solution, and incubated with primary antibodies (listed in Supplementary Table S1) overnight at 4°C. Secondary conjugation was performed using HRP-conjugated anti-rabbit or anti-mouse antibodies (Jackson ImmunoResearch Laboratories), followed by development with chemiluminescent substrate (Thermo Fisher Scientific) and imaged using ChemiDoc Imaging System (Bio-Rad). Uncropped images of blots are shown in Supplementary Figs. S1 and S2.
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