April 26, 2021
High-Throughput Screening For Drug Discovery
Product: Enterotoxin Type B from Staphylococcus aureus
2.1 Cell lines and reagents
… Enterotoxin Type B from Staphylococcus aureus (SEB, List Biological Laboratories …
2.2.1 Day-to-day profiling of T cell activation
The assay was run using cryopreserved human PBMCs from a single healthy donor and were allowed to recover for 24 hours before use. On day 0, we stained human PBMCs with cell proliferation tracing dye (excitation: 488 nm and emission: 530/30 nm) and washed 3 times before plating into a 96-well plate at 2 million/mL (50 μL/well). We treated the cells by adding 50 μL/well of 3 different T-cell modulators in the respective wells: CD3/CD28 Dynabeads, PHA, or SEB. We performed an 11-point, 1:2 serial titration with duplicate wells per dose for each selected treatment. The final top concentration of the treatment in the assay well was 1 million/mL CD3/CD28 Dynabeads, 10 μg/mL PHA, or 100 ng/mL SEB, respectively. …