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Hrp conjugated secondaries

Manufactured by Bio-Rad

HRP-conjugated secondaries are antibodies that are chemically conjugated with the enzyme Horseradish Peroxidase (HRP). These secondary antibodies are designed to bind to primary antibodies, enabling the detection and visualization of target proteins in various immunoassay techniques such as Western blotting, ELISA, and immunohistochemistry.

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3 protocols using hrp conjugated secondaries

1

Immunoblotting and Luminex Assay Protocol

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Cell lysates (50 mM HEPES [pH 7.4], 150 mM NaCl, and 1% Triton X-100) and freshly added EDTA-free protease and phosphatase inhibitor cocktails (Roche) were immunoblotted with primary antibodies overnight at 4 °C. HRP-conjugated secondaries and ECL from BioRAD was used for chemiluminescence detection, while Dylight secondary antibodies were used for infrared detection on LI-COR Odyssey and using LI-COR Image Studio software or Image Studio Light for analysis and band quantification. Fluorescent images were saved in grey scale and therefore displayed as such. Uncropped and unprocessed blot images with molecular weight are available in the Source Data File.
For Luminex assays, samples were prepared using a customized Mouse Magnetic Luminex Assay (R&D Systems) following manufacturer’s protocol and using BioRad BioPlex 200 apparatus and software.
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2

Western Blotting Analysis of Signaling Proteins

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Following boiling or elution in Laemelli Sample Buffer lysates were run on a complete Bio-Rad Western Blotting System. Samples were electrophoretically separated on Bio-Rad 10% Tris-TGX PreCast Gels and blotted onto nitrocellulose membranes using Bio-Rad Trans Turbo Dry transfer and buffer. All blots were blocked using 5% BSA. The following is a list of all primary antibodies used. Phosphorylated-Erk5 (T218/Y220) (1:200, Cell Signaling), ERK5 (1:1000, Cell Signaling), TrkB (1:1000, EMD Millipore). Immunoreactivity was measured using Bio-Rad HRP conjugated secondaries. Blots were developed on a Bio-Rad Digital Detection System running ImageLab software, using Millipore Crescendo chemiluminescence development reagent. ImageJ was used for band densitometry analysis. ImageJ quantification metrics and western blots from the same lysate were ensured to be reasonably reproducible, and all experiments were reproduced using completely independent cultures from different E18 litters.
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3

Protein Isolation from Nasal Tissue

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For protein isolation, nasal turbinate and septum mucosal tissue was
homogenized in ice-cold RIPA buffer containing protease inhibitor cocktail
(Sigma). Following a 30 minute incubation on ice, vortexing every 10 minutes,
the cell lysates were centrifuged at 14,000 x g for 15 minutes, and the
supernatants were collected and stored at −20C. Total protein
concentration in each sample was quantified by Bradford assay to ensure equal
protein loading of 50 mg per lane. Samples were diluted in Laemmli buffer and
heated to 100 °C for 5 minutes, analyzed by 10% Bis-Tris
polyacrylamide gel electrophoresis, and transferred to PVDF membranes (BioRad,
Hercules, CA). Membranes were blocked in 5% non-fat dried milk in Tris
buffered saline (TBS) with 0.1% Tween-20. Immunoblot analysis was
performed using mouse antibodies against SCF, control rabbit polyclonal antibody
against GAPDH (1:1000; Santa Cruz Biotechnology), and HRP-conjugated secondaries
(BioRad). Antibodies were diluted in 5% BSA in TBS with 0.1%
Tween-20. Membranes were visualized by chemiluminescence (Pierce SuperSignal) on
a ChemiDoc imager (BioRad).
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