Cells (5 × 103 cells/well) were seeded in 96-well plates and treated with different concentrations (5 µM, 10 µM, 20 µM, 40 µM, 80 µM) of acetylshikonin or 3-DSC. Cell proliferation was detected at various times (24, 48, and 72 h). For each well, 20 µl of the MTS solution (Promega, Madison, WI) was added. After 1 h of incubation, 25 µl of 10% SDS solution was added, and the absorbance was detected at 492 and 690 nm with a microplate spectrophotometer [22 (link)].
Free full text: Click here