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7 protocols using human tnf α elisa kit

1

Ferulic Acid Modulates Inflammatory Response

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RPMI-1640 culture medium and foetal bovine serum were obtained from Gibco. Ferulic acid (FA), lipopolysaccharide (LPS), Phorbol-12-myristate-13-acetate (PMA), thiazolyl blue tetrazolium bromide (MTT), and 3-methyladenine (3-MA) were purchased from Sigma-Aldrich. MCC950 was purchased from Abmole Bioscience Inc. DCFH-DA was purchased from Beyotime Biotechnology Co., Ltd. The reverse transcription kits and SYBR Premix Ex Taq were purchased from Takara Biomedical Technology. The antibodies against Microtubule Associated Protein 1 Light Chain 3 Beta (LC3), Sequestosome 1 (p62), Beclin-1, NLRP3, pro-caspase-1, caspase-1, pro-Interleukin 1 Beta (IL-1β), IL-1β and Glyceraldehyde-3-Phosphate Dehydrogenase (GAPDH) were purchased from ABclonal Technology. The Human IL-6 ELISA Kit, Human IL-1β ELISA kit and human TNF-α ELISA Kit were purchased from Multisciences (Lianke) Biotech, Co., Ltd. All other reagents used were obtained from local commercial sources.
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2

Cytotoxicity and Immune Response Profiling

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The quantified levels of IFN-γ, TNF-α, Granzyme B secreted by co-cultured activated CD8+ T cells were detected using ELISA kits, including Human TNF-α ELISA Kit, IFN-γ ELISA Kit (MultiSciences, China) and Human Granzyme B ELISA Kit (Beyotime Institute of Biotechnology) according to the manufacturer’s protocol. The supernatants were collected and detected by 450 nm Optical densities using microplate reader (Bio-Tek). For the surface PD-L1, ~ 80% confluency BC cells were stained by FAM-labeled PD-L1 antibody (BioLegend, USA). After washing by PBS three times, FAM-positive cells were detected by flow cytometry. The release of lactate dehydrogenase (LDH) in the supernatants was detected on cell lysis using the Cytotoxicity Detection Kit PLUS (Sigma-Aldrich) according to the manufacturer’s protocol.
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3

Quantifying Cytokine Production by ELISA

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To measure the levels of TNF-α and IFN-γ produced by cells, the supernatants were collected and the concentrations of TNF-α and IFN-γ were measured by the Human TNF-α ELISA Kit (MultiSciences, Hangzhou, China) and Human IFN-γ ELISA Kit (MultiSciences) according to the manufacturer’s guidelines. Optical densities were determined using a microplate reader (Bio-Tek Elx 800; Bio-Tek Instruments) at 450 nm.
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4

Urinary Biomarker Analysis in Kidney Injury

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Following centrifugation of urine for 20 min, the supernatant was collected for ELISA assay. Mouse Urinary Albumin (UALB) ELISA Kit was used to measure the UALB. Urine neutrophil gelatinase-associated lipocalin (NGAL) was detected by Mouse NGAL ELISA Kit. We performed the detection of urinary kidney injury molecule 1 (KIM-1) using mouse KIM-1 ELISA Kit. The three ELISA kits were purchased from Wuhan Fine Biotech (Wuhan, China).
The levels of interleukin-6 (IL-6), IL-1β, tumor necrosis factor alpha (TNF-α) and monocyte chemoattractant protein-1 (MCP-1) in renal cortex and HK2 cells were detected according to ELISA kit instructions. The kits used in this part were purchased from MULTI SCIENCES (Zhejiang, China) and they included Mouse IL-6 ELISA kit, Human IL-6 ELISA kit, mouse IL-1β ELISA kit, human IL-1β ELISA kit, mouse TNF-α ELISA kit, human TNF-α ELISA kit, mouse MCP-1 ELISA kit and Human MCP-1 ELISA Kit.
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5

Cytokine Levels Under SFP and DSFP-45

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The effects of SFP and DSFP-45 on the levels of pro-inflammatory cytokines, including IL-1β, IL-6, and TNF-α, were studied by ELISA. The level of IL-1β was measured using the Human IL-1β ELISA Kit (EHC002b.48, NeoBioscience Technology Co., Ltd., Shenzhen, China) according to the manufacturer’s protocol. The content of IL-6 was determined using the Human IL-6 ELISA Kit (70-EK106/2-96, Multi Sciences Biotech Co., Ltd., Hangzhou, China). The amount of TNF-α was detected by the Human TNF-α ELISA Kit (70-EK182-96, Multi Sciences Biotech Co., Ltd., Hangzhou, China).
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6

Cytokine and Receptor ELISA Quantification

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sB7-H5 and cytokines were detected using ELISA following the Manufacturer's manual. The Human Platelet receptor Gi24 (C10orf54) ELISA kit (CSB-EL002961HU, Cusabio technology, Wuhan, Hubei, China), Human IL-6 ELISA Kit (70-EK106/2-96, MultiSciences Biotech, Hangzhou, Zhejiang, China), Human IL-10 ELISA Kit (70-EK110/2-96, MultiSciences Biotech, Hangzhou, Zhejiang, China), and Human TNF-α ELISA Kit (70-EK182-96, MultiSciences Biotech, Hangzhou, Zhejiang, China) were used.
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7

Quantifying Cytokine and Perforin Levels

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To measure the production of perforin, TNF-α, CXCL9, CXCL10 and CXCL11, the supernatant was collected and centrifuged to remove remaining cells. The levels of perforin and the above cytokines were evaluated by human perforin ELISA Kit (Enzyme-linked Biotechnology Co. Ltd., Shanghai, China), human TNF-α ELISA Kit (Multisciences, Hangzhou, China), Human CXCL9 ELISA Kit (Multisciences, Hangzhou, China), Human CXCL10 ELISA Kit (Multisciences, Hangzhou, China), and Human CXCL11 ELISA Kit (Multisciences, Hangzhou, China) according to the manufacturers’ instructions, respectively. The ODs were measured at 450 nm and the concentrations of perforin and the cytokines were determined according to their corresponding standard curves.
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