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Cytokine elisa kits

Manufactured by BioLegend
Sourced in United States

Cytokine ELISA kits are laboratory instruments used to quantify the levels of specific cytokines in biological samples. These kits employ the enzyme-linked immunosorbent assay (ELISA) technique to detect and measure the concentration of target cytokines present in the sample.

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6 protocols using cytokine elisa kits

1

Cytokine ELISA Assay Protocol

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Lipopolysaccharides (LPS), MTT, and β-nicotinamide adenine dinucleotide phosphate were acquired from Merck (Darmstadt, Germany). BioLegend provided the cytokine ELISA kits (San Diego, CA, USA). Other high-purity chemicals were purchased commercially.
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2

Cytokine ELISA Measurement Protocol

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Cytokine ELISA kits were purchased from BioLegend (San Diego, CA) and followed the manufacturer’s protocol. Human IL-6, TNF, and MCP-1 ELISA kits (BD OptEIA) were purchased from BD Biosciences (Franklin Lakes, NJ).
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3

LPS-Induced Inflammation in Macrophages

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LPS (E. Coli. O55:B5, L2880) was from Sigma-Aldrich. Anti-Rab11a (#2413), Na+/K+ ATPase (#3010) and GAPDH (#2118) Abs were from Cell Signaling. Anti-HRP–conjugated Abs were obtained from Santa Cruz Biotechnology. Anti-CD36 (ab23680, ab133625) Abs, anti-ADAM17 (ab57484, ab39163) Abs and myeloperoxidase (MPO) assay kit were ordered from Abcam. Cytokine ELISA kits were purchased from Biolegend. Rab11a and ADAM17 siRNAs were from Dharmacon. CellTracker™ Green and Red, pHrodo succinimidyl ester (pHrodo-SE), Alexa fluor 594 or 488-conjugated Abs, Lipofectamine 2000, Lipofectamine RNAiMAX transfection reagent, Mem-PER™ Plus Membrane Protein Extraction Kit, BSA, FBS, and heat-inactivated FBS were from Invitrogen. Rab11 activation assay kit was from Neweast Bioscience. Radioimmunoprecipitation assay (RIPA) buffer was from Pierce Biotechnology. Bicinchoninic acid kits and sample buffer were from Bio-Rad. DMEM/ F12 and nonenzymatic cell dissociation solution were from Cellgro. Wild type Rab11a and dominant negative mutant Rab11a S25N plasmids were a gift from Dr. Wei Guo (University of Pennsylvania, Philadelphia, PA).
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4

Quantifying Cytokine Levels via ELISA

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IL-6, IL-1β and TNF-α cytokine levels were measured by a solid-phase sandwich ELISA using commercially available cytokine ELISA kits (Biolegend, San Diego, CA, USA). The assay was performed in duplicate or triplicate, as per manufacturer’s instructions. The culture supernatants, blood plasma samples, or splenic homogenates were diluted 1:1 with coating buffer (1%BSA + 1xPBS-Tween20) and used in the assay, along with the known concentration of cytokine standards (provided with the kits) in each ELISA plate. The plates were developed and read at optical density (OD) of 450 nm in a multimode microplate reader (PerkinElmer, Waltham, MA, USA). The standard curve generated from the OD of cytokine standards was used to determine cytokine levels in the samples.
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5

Cytokine and Antibody Levels Measured

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The level of IL-4, IL-5, IL-17A, and IFN-γ in BAL fluid was measured by ELISA according to the manufacturer's instructions. All cytokine ELISA kits were from BioLegend (San Diego, CA). Total and HDM-specific forms of IgE and IgG1 levels were quantified using commercial ELISA kits in serum (Southern Biotech Birmingham, Al) as described previously [41 (link)].
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6

Investigating Inflammatory Signaling Pathways

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RPMI 1640 and penicillin-streptomycin were obtained from Gibco (Grand Island, NY, USA). LPS purified from Escherichia coli and radio-immunoprecipitation assay (RIPA) lysis buffer, protease inhibitors and β-actin antibody were purchased from Sigma-Aldrich (St. Louis, MO, USA). Cytokine ELISA kits were supplied from Biolegend (USA). Antibody for PARP was purchased from Santa Cruz Biotechnology (Santa Cruz, CA, USA). Antibody for iNOS was obtained from Merck-Millipore (Darmstadt, Germany). Antibodies against COX-2, pp38, p38, pJNK, JNK, pERK, ERK, NF-kB and c-Jun were purchased from Cell Signaling Technology (Beverly, MA, USA). Nitrocellulose membrane was obtained from GE Healthcare (UK). Commasie Plus™ Protein Assay Reagent, ECL reagent and fetal bovine serum (FBS) were obtained from Thermo Scientific (USA).
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