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Western lighting chemiluminescence reagent

Manufactured by Merck Group

The Western Lighting Chemiluminescence Reagent is a laboratory product designed for the detection and quantification of proteins in Western blot analysis. The reagent produces a chemiluminescent signal when it reacts with the horseradish peroxidase (HRP) enzyme that is commonly used to label antibodies in Western blotting procedures.

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2 protocols using western lighting chemiluminescence reagent

1

Protein Extraction and Western Blotting for Steroidogenic Enzymes

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Platelet protein extracts were prepared using cell lysis buffer (Cell Signaling; cat no. 9803S) with protease inhibitors (Thermo Scientific; cat no. 78410). Protein concentrations were determined by BCA assays (BioRAD). Samples were boiled in Laemmli sample buffer (BioRAD) with β-ME and analyzed by sodium dodecyl sulfate polyacrylamide gel electrophoresis. One hundred micrograms of protein was loaded per lane. Proteins were transferred to a nitrocellulose membrane, blocked in 5% nonfat milk (wt/vol in PBS), and immunoblotted with indicated primary antibodies and appropriate horseradish peroxidase–conjugated secondary antibodies. Immunoblots were developed using Western Lighting Chemiluminescence Reagent (Milipore, Billerica, MA).
Antibodies anti-CYP17A1 (cat no. SAB1300941), anti-HSD3B2 (cat no. SAB2101087), and anti–actin-HRP (cat no. A3854) were from Sigma-Aldrich; anti-CYP11A1 (cat no. 12491) was from Cell Signaling Technology (Danvers, MA).
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2

Western Blot Analysis of EV71 Capsid Proteins

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MAB979, a mouse monoclonal antibody that specifically recognizes EV71 VP0/VP2 capsid proteins (Millipore), MAB1255-M08, a mouse monoclonal antibody that specifically recognizes EV71 VP1 capsid protein (Abnova), and anti-β-actin antibody (Sigma-Aldrich) were used as primary antibodies. Infected cells or concentrated virus samples were lysed in loading buffer and resolved by electrophoresis in a 12% SDS-PAGE. Proteins were transferred onto a PVDF membrane, blocked with 5% skim milk, and probed with primary antibodies, including anti-EV71 VP0/VP2 antibody (diluted 1:1000), anti-EV71 VP1 antibody (diluted 1:1000), or anti-β-actin antibody (diluted 1:5000) at 4°C overnight. After incubation, the 1:5000 diluted HRP-conjugated secondary antibody was added, followed by incubation for 2 hours at room temperature. After four wash steps with PBS plus 0.1% Tween 20 (PBST), signals were detected using Western Lighting chemiluminescence reagent (Millipore) and the densitometry of specific blots was calculated using the ImageJ software.
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