Rigosertib (ON-01910)

InformationRigosertib (ON-01910) is a non-ATP-competitive inhibitor ofPLK1withIC50of 9 nM in a cell-free assay. It shows 30-fold greater selectivity against Plk2 and no activity to Plk3. Rigosertib inhibitsPI3K/Aktpathway and activates oxidative stress signals. RigoIn vitroRigosertib is non-ATP-competitive inhibitor to PLK1 with IC50 of 9 nM. Rigosertib also exhibits inhibition against PLK2, PDGFR, Flt1, BCR-ABL, Fyn, Src, and CDK1, with IC50 of 18-260 nM. Rigosertib shows cell killing activity against 94 different tumor cell lines with IC50 of 50-250 nM, including BT27, MCF-7, DU145, PC3, U87, A549, H187, RF1, HCT15, SW480, and KB cells. While in normal cells, such as HFL, PrEC, HMEC, and HUVEC, Rigosertib has little or no effect unless its concentration is greater than 5-10 μM. In HeLa cells, Rigosertib (100-250 nM) induces spindle abnormalities and apoptosis. Rigosertib also inhibits several multidrug resistant tumor cell lines, including MES-SA, MES-SA/DX5a, CEM, and CEM/C2a, with IC50 of 50-100 nM. In DU145 cells, Rigosertib (0.25-5 μM) blocks cell cycle progression in G2/M phase, results in an accumulation of cells containing subG1 content of DNA, and activates apoptotic pathways. In A549 cells, Rigosertib (50 nM-0.5 μM) induces loss of viability and caspase 3/7 activation. In a recent study, Rigosertib induces apoptosis in chronic lymphocytic leukemia (CLL) cells without toxicity against T-cells or normal B-cells. Rigosertib also abrogates the pro-survival effect of follicular dendritic cells on CLL cells and reduces SDF-1-induced migration of leukemic cells.In vivoIn mouse xenograft models of Bel-7402, MCF-7, and MIA-PaCa cells, Rigosertib (250 mg/kg) markedly inhibits tumor growth. Rigosertib (200 mg/kg) shows inhibition on tumor growth in a mouse xengraft model of BT20 cells.Cell Datacell lines：Concentrations：1 nM - 10 μM, dissolved in DMSO as stock solution.Incubation Time：96 hoursPowder Purity:≥98%.

Specifications and Purity: 10mM in DMSO

Molecular Formula: C21H24NNaO8S

Molecular Weight: 473.47