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Rigosertib sodium

CAS No. : 592542-60-4

MCE 站：Rigosertib sodium

产品活性：Rigosertib sodium (ON-01910 sodium) 是一种多激酶抑制剂和选择性抗癌剂，通过抑制 PI3K/Akt 途径诱导细胞凋亡，促进组蛋白 H2AX 的磷酸化并诱导细胞周期中的 G2/M 期停滞。Rigosertib sodium 是一种选择性的非 ATP 竞争性 PLK1 抑制剂，IC₅₀ 值为 9 nM。

研究领域：Cell Cycle/DNA Damage  |  PI3K/Akt/mTOR  |  Apoptosis

作用靶点：Polo-like Kinase (PLK)  |  PI3K  |  Apoptosis

In Vitro: Rigosertib is non-ATP-competitive inhibitor of PLK1 with IC₅₀ of 9 nM. Rigosertib also exhibits inhibition of 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. Rigosertib sodium (2 μM) induces apoptosis in chronic lymphocytic leukemia (CLL) cells without toxicity against T-cells or normal B-cells. Rigosertib sodium (2 μM) also abrogates the pro-survival effect of follicular dendritic cells on CLL cells and reduces SDF-1-induced migration of leukemic cells.

In Vivo: Rigosertib (250 mg/kg, i.p.) markedly inhibits tumor growth in mouse xenograft models of Bel-7402, MCF-7, and MIA-PaCa cells. Rigosertib (200 mg/kg, i.p.) shows inhibition on tumor growth in a mouse xengraft model of BT20 cells.

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