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4 protocols using elh tnfα

1

Cytokine Analysis by ELISA

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Cytokine analysis was carried out on the supernatants extracted from the cultures by ELISA using different ELISA kits according to the manufacturer’s instructions. The human cytokine IL-2 (ELH-IL-2, RayBio), INF-γ (ELH-IFNg, RayBio), TNF-α (ELH-TNFα, RayBio), GzmB (ELH-GZMB, RayBio), TNF-β (EK17004, SABbiotech) and The Perforin 1 (EK16250, SABbiotech) ELISA kits were used. The results were read on a multifunctional microplate reader (Tecan, Infinite M1000 PRO).
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2

Quantifying Protein and Oxidative Markers

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The concentration of selected proteins was measured using a commercially available ELISA kit for INFγ (EHIFNG; Thermo Fisher Scientific, Waltham, United States), sTNFα (ELH-TNFα; RayBiotech Life, Atlanta, United States), and iNOS/NOS2 (E-EL-H0753; Elabscience, Houston, United States). ELISA approach was also utilized to quantify protein carbonyls (STA-310; Cell Biolabs, San Diego, United States) and oxLDL (EH0943; FineTest, Hubei, China). All assays were prepared according to the manufacturer’s instructions and measured using an Infinite M200 PRO multimode reader (TECAN, Männedorf, Switzerland).
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3

Apoptosis Pathway Protein Assays

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Z-VAD was purchased from Calbiochem. The antibodies used were as follows: anti-caspase-3 (Cell signaling, 9662), anti-caspase-8 (Cell signaling, 9746), anti-caspase-8 (Santa Cruz Biotech, SC-6136), anti-caspase-9 (Cell signaling, 9508), anti-TRADD (Cell signaling, 3684), anti-actin (Sigma, A2066), anti-Flag (Sigma, F-3165), anti-tubulin (Sigma, T7816), anti-PARP (Cell signaling, 9542), anti-Mcl1 (BD, 554103), anti-TL1A (Enzo, ALX-804-859-C100), and anti-TL1A (PEPROTECH, 500-P240). Recombinant proteins: FasL (R&D, 126-FL/CF), TNFα24 (link) and TRAIL25 (link). ELISA kits: TL1A (ENZO Life Science, APO-54N-027), TNF-alpha (RayBiotech, ELH-TNFα), FasL (RayBiotech, ELH-FASL), and TRAIL (RayBiotech, ELH-TRAIL).
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4

Cortisol Modulation of THP-1 Cells

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THP-1 cells were seeded at 5 × 104 cells per well in 24-well culture plates for 24 h. After incubation with starvation medium (0.5% FBS) for 24 h, cells were intervened with either human cortisol (H-CORT., 10− 9 to 10− 5 mol/L, Sigma-Aldrich, HA-8880) or PBS for 48 h. Positive control group was intervened with lipopolysaccharides (LPS, 100 ng/ml, Sigma-Aldrich, L6529). Supernatant was frozen at − 80 °C until being used for matrix metalloprotein-2 (MMP-2, Raybiotech, ELH-MMP2), tissue inhibitor of metalloproteinase-2 (TIMP-2, Raybiotech, ELH-TIMP2) and tumor necrosis factor-α (TNF-α, Raybiotech, ELH-TNFα) detection.
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