BV-6

BV6 inhibits the cell viability of HCC193 NSCLC cells with IC50 of 7.2 μM, induces apoptosis in both HCC193 and H460 cell lines, and also significantly enhances the radiosensitivity of these cell lines through activation of cleaved caspase-8 and cleaved caspase-9, respectively. ^[1]

In immature dendritic cells, BV-6 treatment results in moderate activation of the classical NF-kB pathway. ^[2]

Furthermore, BV-6 increases CIK cell-mediated lysis of hematological (H9, THP-1, and Tanoue) and solid malignancies (RH1, RH30, and TE671). BV-6 also enhances apoptosis of peripheral blood mononuclear cells and most notably has an inhibitory effect on immune cells limiting their cytotoxic potential. ^[3]

Cell viability is measured using the CellTiter 96® Aqueous Non-Radioactive Cell Proliferation Assay kit. 5000 cells/well are seeded into 96-well plates in triplicate. Following adhesion of cells to the wells, increasing concentrations of BV6 are added into different wells. Control groups are exposed to the same concentration of DMSO. The final concentrations of 333 μg/mL MTS and 25 μM PMS are added to each well 24 hours later. After two hours incubation at 37 °C in humidified 5% CO₂, plates are read at the absorbance of 490-nm on a microplate reader. Relative cell viability of an individual sample is calculated by normalizing their absorbance to that of the corresponding control. IC50 values are calculated using Prism 5.01. For the TNFα neutralizing antibody assay, cells are exposed to 1 and 5 μM BV6 with or without 10 μg/mL infliximab and the assay is performed 24 hours later. Plates are read at the absorbance of 490-nm on a microplate reader

BV6 is an IAP antagonist.