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Chicken egg white albumin

Manufactured by Merck Group
Sourced in United States

Chicken egg white albumin is a laboratory reagent derived from the egg white of chickens. It is a natural protein that serves as a standard for various analytical and research applications.

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5 protocols using chicken egg white albumin

1

Investigating Inflammatory Mediators in Cell Lines

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RPMI, chicken egg white albumin, and LPS were obtained from the Sigma-Aldrich Chemical (St. Louis, MO, USA), as were all other reagents, unless specifically stated elsewhere. Fetal bovine serum (FBS), penicillin-streptomycin, and trypsin-EDTA were purchased from the Lonza (Walkersville, MD, USA). Rabbit polyclonal antibodies of matrix metalloproteinase (MMP)-12 and intracellular adhesion molecule (ICAM)-1, goat polyclonal cyclooxygenase (COX)-2 antibody, and mouse monoclonal inducible NOS (iNOS) antibody were purchased from the Santa Cruz Biotechnology (Dallas, TX, USA). Mouse monoclonal antibodies of bcl-2 and bax were provided by BD Transduction Laboratories (Franklin Lakes, NJ, USA). Rabbit polyclonal antibodies of cleaved caspase-3, cleaved caspase-9, phospho-p53, inhibitory κB (IκB), and phospho-IκB were obtained from Cell Signaling Technology (Beverly, MA, USA). Horseradish peroxidase (HRP)-conjugated goat anti-rabbit IgG, donkey anti-goat IgG, and goat anti-mouse IgG were purchased from Jackson Immuno-Research Laboratories (West Grove, PA, USA). Mouse monoclonal β-actin antibody was obtained from Sigma-Aldrich Chemicals. Essential fatty acid free bovine serum albumin (BSA) and skim milk were supplied by Becton Dickinson Company (Sparks, MD, USA). 4’,6-Diamidino-2-phenylindole (DAPI) was obtained from Santa Cruz Biotechnology.
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2

Alveolar Macrophage Polarization Protocol

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Isolated alveolar macrophages were suspended in RPMI-1640 media (Corning; Corning, NY, USA) supplemented with 10% fetal bovine serum (FBS) (VWR; Radnor, PA, USA), 1% penicillin-streptomycin (Corning) and 1% sodium pyruvate (Corning). Cells were suspended at 1×105 cells/well with 100 μl/well for 96-well plate formats, 2×105 cells/well with 400 μl/well for 24-well plate formats, and 5×105 cells/well with 3 ml/well for 6-well plate formats. For macrophage phenotype polarization, lavaged cells were polarized into the different phenotypes and incubated at 37°C in a 5% CO2 incubator for 24-hr as follows: M1 [20 ng/ml IFNγ (PeproTech; Rocky Hill, NJ, USA) + 10 pg/ml LPS (Genin et al., 2015 (link))], M2a [20 ng/ml IL-4 (PeproTech) + 20 ng/mL IL-13 (PeproTech) (Genin et al., 2015 (link))], M2b [immune complex; IC, consisting of 150 μg/ml anti-chicken egg albumin antibody (Sigma-Aldrich) + 15 μg/ml chicken egg white albumin (Sigma-Aldrich), incubated at 37°C for 30 min to form IC, and then 50 ng/ml LPS was added (Yue et al., 2017 (link))], or M2c [20 ng/ml IL-10 (eBioscience; San Diego, CA, USA) + 20 ng/mL TGF- β (R&D Systems; Minneapolis, MN, USA) (Kim et al., 2019 (link); Zizzo et al., 2012 (link))]. Treatments for each experiment are described below.
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3

Optimized Cell Culture Conditions

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M199, human epidermal growth factor (EGF), hydrocortisone, gelatin, human insulin, apotransferrin, chicken egg white albumin and LPS were obtained from Sigma-Aldrich Chemical (St. Louis, MO, USA), as were all other reagents, unless specifically stated otherwise. Fetal bovine serum (FBS), penicillin-streptomycin and trypsin-EDTA were purchased from Lonza (Walkersville, MD, USA). Eotaxin-1 (CCL11) antibody was purchased from R&D systems (Minneapolis, MN, USA) and β-actin antibody was obtained from Sigma-Aldrich Chemicals. Additionally, MUC5AC antibody was provided by Abcam (Cambridge, UK). Antibodies of toll-like receptor 4 (TLR4), intracellular adhesion molecule (ICAM)-1 and eosinophil major basic protein (EMBP) were purchased from Santa Cruz Biotechnology (Dallas, TX, USA). Horseradish peroxidase (HRP)-conjugated goat anti-rabbit IgG, donkey anti-goat IgG and goat anti-mouse IgG were purchased from Jackson Immuno-Research Laboratories (West Grove, PA, USA). Essential fatty acid free bovine serum albumin (BSA) and skim milk were supplied by Becton Dickinson Company (Sparks, MD, USA).
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4

Visualizing Platelet Actin Cytoskeleton

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Platelets were diluted to a final concentration of 2 × 104 cells/mL in cell culture medium (DMEM, Sigma-Aldrich, Vienna, Austria) and were allowed to settle on a glass slide for 15 min. Non-adherent cells were washed away with Phosphate-Buffered Saline (PBS). Actin cytoskeleton was visualized using Alexa Fluor 647 phalloidin (Cell Signaling Technology, Leiden, The Netherlands) in a Cytoskeleton Buffer with Sucrose (CBS) containing 10 mM MES pH 6.1, 138 mM KCl, 3 mM MgCl2, 2 mM EGTA, and 0.32 M sucrose according to a protocol from Louise Cramer [23 (link)] (MRC Laboratory for Molecular Cell Biology, UCL, London, UK). Briefly, platelets were fixed using 4% paraformaldehyde in CBS for 20 min at room temperature, then permeabilized using 0.5% Triton X-100 with CBS, blocked in 10% chicken-egg-white-albumin (Sigma-Aldrich, Vienna, Austria) and stained for 20 min with 66 nM Alexa Fluor 647 conjugated to phalloidin.
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5

Rapeseed Press Cake Characterization

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Cold-pressed rapeseed press cake (RPC) (Brassica napus L.) was a kind gift from Gunnarshögs Jordbruk AB (Hammenhög, Sweden). The rapeseeds were cold-pressed at Gunnarshögs Jordbruk AB’s production site and the oil temperature during pressing did not exceed 35 °C and no solvents were used. The hot-pressed rapeseed meal (RM) and the solvent-extracted RM was a kind gift from AAK AB (Karlshamn, Sweden). Hot pressing was typically performed at 80 °C to 100 °C. For the solvent-extracted meal, the oil residues were recovered by hexane post hot pressing. Citric acid (C6H8O7, CAS 77-92-9), sodium chloride (NaCl, CAS 7647-14-5), sodium dihydrogen phosphate monohydrate (H2Na PO4·H2O, CAS 7558-80-7), disodium hydrogen phosphate dodecahydrate (Na2HPO4·12H2O, CAS 10039-32-4), and sodium hydroxide (NaOH, CAS 1310-73-2) were purchased from Merck (Darmstadt, Germany). Miglyol 812 was purchased from Sasol AG (Witten, Germany). Bovine serum albumin (BSA) and chicken egg white albumin were purchased from Sigma-Aldrich (St. Louis, MA, USA) and deoiled lecithin from soy was purchased from Cargill (Minneapolis, MN, USA). All other chemicals were of analytical grade.
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