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| | Inhibition of LPS-induced TNFalpha in Human PBMCs |
| Description: | Cryopreserved human PBMCs were obtained from AllCells (cat# PB003F). After thawing/dilution protocols using RPMI medium supplemented with 5% FBS (heat inactivated), 100 ul/well of 1×106 cells/ml were plated into 96 well tissue culture plates (Corning). Cells were then pre-incubated for 1 hr at 37° C. in humidified 5% CO2 and 95% air with test compounds diluted in DMSO (final DMSO concentration 0.3%). Each compound was tested at 10 concentrations in duplicate wells. After the pre-incubation, 100 ng/ml LPS (E. Coli; Sigma) in RPMI media with 5% FBS was added for a 6 hr incubation at 37° C. in humidified 5% CO2 and 95% air. Controls on each plate included cells and LPS only, cells and media only (no LPS), and media only. After the 6 hr incubation, plates were centrifuged and the supernatants transferred to a new plate and frozen for subsequent TNFalpha analysis. Human TNFalpha was analyzed by ELISA according to the manufacturer's instructions (BD Sciences, BD OptEIA Cat#550610) and analyzed on a SpectraMax M series (Molecular Devices) microplate reader at OD 450 nm. IC50s were calculated using XLFit4 curve fitting software (IDBS) and a 4-parameter one-site sigmoid dose response fit. |
| Affinity data for this assay | |
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