Buparlisib (BKM120)

2 years -80 in solvent

Dosed orally daily (q.d.).

A2780 cells.

0-6.6 uM

In 15% Captisol.

BKM120 is not sensitive to Class III and Class IV PI3K's or PI4K., NVP-BKM120 shows great antiproliferation activity to PI3K deregulated cell lines including A2780, U87MG, MCF7 and DU145 with GI50 of 0.1-0.7 nM. [1] BKM120 induces multiple myeloma cells (ARP1, ARK, MM.1S, MM1.R and U266) apoptosis, which results in increased G1-phase cells and decreased S-phase cells. BKM120 induced CD138+ primary MM cell apoptosis and has significant lower cytotoxicity toward CD138 stromal cells. BKM120 exposure could cause upregulation of BimS and downregulation of XIAP. [2] BKM120 demonstrates antiproliferative activity in human gastric cancer cell lines by decreasing mTOR downstream signaling. BKM120 could increase either p-ERK or p-STAT3 in KRAS mutant gastric cancer cells. Combination with STAT3 blockade, BKM120 shows a synergism in cells harboring mutated KRAS by inducing apoptosis, but not in KRAS wild-type cells. [3] A recent study shows that BKM120 shows differential forms of cell death on the basis of p53 status of the cells with p53 wild-type cells undergoing apoptotic cell death and p53 mutant/deleted cells having a mitotic catastrophe cell death. BKM120 mediates mitotic catastrophe mainly through Aurora B kinase. [4]

3 days.

A2780 cells are cultured in DMEM supplemented with 10% FBS, L-glutamine, sodium pyruvate, and antibiotics. Cells are plated in the same medium at a density of 103 cells per well, 100 uL per well into black-walled-clear-bottom plates and incubated for 3-5 hours. BKM120 supplied in DMSO (20 mM) is diluted. The diluted BKM120 solution (2 uL), is then added to cell medium (500 uL) cell medium (concentration from 0-6.6 uM). Equal volumes of this solution (100 uL) are added to the cells in 96 well plates and incubated at 37 C for 3 days and developed using Cell Titer Glo. Inhibition of cell proliferation is determined by luminescence read using Trilux.

Buparlisib (BKM120, NVP-BKM120) is a selective PI3K inhibitor of p110α/β/δ/γ with IC50 of 52 nM/166 nM/116 nM/262 nM in cell-free assays, respectively. Reduced potency against VPS34, mTOR, DNAPK, with little activity to PI4Kβ. Buparlisib induces apoptosis. Phase 2.