HTRF Human TNF-α Detection Kit, 500 Assay Points

Assay principle

Cell supernatant, sample, or standard is dispensed directly into the assay plate for the detection by HTRF® reagents (384-well low-volume white plate or Revvity low-volume 96-well plate in 20 µl). The antibodies labeled with the HTRF donor and acceptor are pre-mixed and added in a single dispensing step, to further streamline the assay procedure. The assay can be run up to a 1536-well format by simply resizing each addition volume proportionally.

Intra-assay (n=24)

Each of the 3 samples was measured 24 times, and % CV was calculated for each sample.

Inter-assay (n=4)

Each of the samples was measured in 4 different experiments, and % CV was calculated for each sample.

Inhibition of TNF alpha secretion in THP1 cells with JTE607

THP1 cells plated at 100 kcells/well were incubated with increasing concentrations of JTE 607 for 18h, then stimulated for 3 h with 2 µg/mL LPS. 16 µL of supernatants were then transferred into a white detection plate (384 low volume) to be analyzed by the Human TNFa Assay.

TNF alpha secretion in PBMCs stimulated with LPS

PBMC plated at 50, 100, 200 and 400 kcells/well were stimulated for 3h with increasing concentrations of LPS (0, 0.02, 0.2, 2 µg/mL). 16 µL of supernatants were then transferred into a white detection plate (384 low volume) to be analyzed by the Human TNFa Assay.