A cell-permeable, arylsulphonamidyl thiophene amide that is shown to reduce IL-6-induced STAT3 transcriptional activity (EC50=15uM) in a luciferase reporter assay, in HeLa cells. It selectively inhibits STAT3, but not STAT1, phosphorylation following IL-6 stimulation in both HeLa and MDA-MB-231 breast cancer cells at concentrations of 10-30uM and 30-100uM, respectively. Following IL-6 stimulation, it suppresses the cell viability of STAT3-dependent cancer cells by 40% compared with that of STAT3-null cancer cells at the low micromolar level.
Storage and Stability:Lyophilized powder may be stored at -20°C. Stable for 12 months at -20°C. Reconstitute with sterile buffer or dH2O. Aliquot to avoid repeated freezing and thawing. Store at -20°C. For maximum recovery of product, centrifuge the original vial after thawing and prior to removing the cap. Further dilutions can be made in assay buffer.
