Rigosertib (ON-01910)

Catalog No.S1362 Batch:S136206

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Technical Data

Formula

C21H24NNaO8S
Molecular Weight 473.47 CAS No. 1225497-78-8
Solubility (25°C)* In vitro DMSO 66 mg/mL (139.39 mM)
Water Insoluble
Ethanol Insoluble
* <1 mg/ml means slightly soluble or insoluble.
* Please note that Selleck tests the solubility of all compounds in-house, and the actual solubility may differ slightly from published values. This is normal and is due to slight batch-to-batch variations.
* Room temperature shipping (Stability testing shows this product can be shipped without any cooling measures.)

Preparing Stock Solutions

Biological Activity

Description Rigosertib (ON-01910) is a non-ATP-competitive inhibitor of PLK1 with IC50 of 9 nM in a cell-free assay. It shows 30-fold greater selectivity against Plk2 and no activity to Plk3. Rigosertib inhibits PI3K/Akt pathway and activates oxidative stress signals. Rigosertib induces apoptosis in various cancer cells. Phase 3.
Targets
PLK1 [1]
(Cell-free assay)		 PDGFR [1]
(Cell-free assay)		 Bcr-Abl [1]
(Cell-free assay)		 Flt1 [1]
(Cell-free assay)		 Src [1]
(Cell-free assay)		 View More
9 nM 18 nM 32 nM 42 nM 155 nM
In vitro Rigosertib 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. [1] 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. [2] 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. [3]
In vivo In mouse xenograft models of Bel-7402, MCF-7, and MIA-PaCa cells, Rigosertib (250 mg/kg) markedly inhibits tumor growth. [1] Rigosertib (200 mg/kg) shows inhibition on tumor growth in a mouse xengraft model of BT20 cells. [2]

Protocol (from reference)

Kinase Assay:[1]
  • In vitro enzyme assays for PLK1

    Recombinant PLK1 (10 ng) is incubated with different concentrations of Rigosertib in a 15 µL reaction mixture (50 mM HEPES, 10 mM MgCl2, 1 mM EDTA, 2 mM Dithiothreitol, 0.01% NP-40 [pH 7.5]) for 30 min at room temperature. Kinase reactions are performed for 20 min at 30 °C in a volume of 20 µL (15 µL enzyme + inhibitor, 2 µL 1 mM ATP), 2 µL of γ32P-ATP (40 μCi), and 1 µL of recombinant Cdc25C (100 ng) or casein (1 μg) substrates. Reactions are terminated by boiling for 2 min in 20 µL of 2× Laemmli buffer. Phosphorylated substrates are separated by 18% SDS-PAGE. The gels are dried and exposed to X-ray film for 3-10 min.
Cell Assay:[2]
  • Cell lines

    A number of tumor cell lines, including BT20, MCF-7, DU145, PC3, U87, A549, H187, RF1, HCT15, HeLa, and Raji cells

  • Concentrations

    1 nM - 10 μM, dissolved in DMSO as stock solution.

  • Incubation Time

    96 hours

  • Method

    Cells are grown in either DMEM or RPMI supplemented with 10% fetal bovine serum and 1 unit/mL penicillin-streptomycin solution. Tumor cells are plated into six-well dishes at a density of 1 × 105cells/mL/well, and Rigosertib is added 24 hours later at various concentrations. Cell counts are determined from duplicate wells after 96-hour of treatment. The total number of viable cells is determined by trypan blue exclusio
Animal Study:[1]
  • Animal Models

    Mouse (female athymic, NCR-nu/nu) xenograft models of Bel-7402, MCF-7, and MIA-PaCa cells

  • Dosages

    250 mg/kg

  • Administration

    Intraperitonially

Customer Product Validation

Data from [Data independently produced by PLoS One, 2013, 8(11), e79863]

Data independently produced by Dr Antonino Maria Sparta, PhD University of Bologna.,

, , Dr. Antonino Maria Sparta, PhD University of Bologna

Data from [Data independently produced by , , Sci Rep, 2014, 4:7310]

Selleck's Rigosertib (ON-01910) has been cited by 35 publications

Comprehensive multi-omics analysis reveals WEE1 as a synergistic lethal target with hyperthermia through CDK1 super-activation [ Nat Commun, 2024, 15(1):2089] PubMed: 38453961
Visualization strategies to aid interpretation of high-dimensional genotoxicity data [ Environ Mol Mutagen, 2024, 10.1002/em.22604] PubMed: 38757760
Poziotinib for EGFR exon 20-mutant NSCLC: Clinical efficacy, resistance mechanisms, and impact of insertion location on drug sensitivity [ Cancer Cell, 2022, 40(7):754-767.e6] PubMed: 35820397
IGF2BP3 is an essential N6-methyladenosine biotarget for suppressing ferroptosis in lung adenocarcinoma cells [ Mater Today Bio, 2022, 17:100503] PubMed: 36457846
Identification of New Vulnerabilities in Conjunctival Melanoma Using Image-Based High Content Drug Screening [ Cancers (Basel), 2022, 14(6)1575] PubMed: 35326726
In vitro human cell-based aneugen molecular mechanism assay [ Environ Mol Mutagen, 2022, 63(3):151-161] PubMed: 35426156
Elevated FBXO45 promotes liver tumorigenesis through enhancing IGF2BP1 ubiquitination and subsequent PLK1 upregulation [ Elife, 2021, 10e70715] PubMed: 34779401
Efficacy of rigosertib, a small molecular RAS signaling disrupter for the treatment of KRAS-mutant colorectal cancer [ Cancer Biol Med, 2021, j.issn.2095-3941.2020.0532] PubMed: 34347396
Rigosertib inhibits MEK1-ERK pathway and alleviates lipopolysaccharide-induced sepsis [ Immun Inflamm Dis, 2021, 10.1002/iid3.458] PubMed: 34061465
Pharmaceutical-Grade Rigosertib Is a Microtubule-Destabilizing Agent [ Mol Cell, 2020, 79(1):191-198.e3] PubMed: 32619469

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SHIPPING AND STORAGE
Selleck products are transported at room temperature. If you receive the product at room temperature, please rest assured, the Selleck Quality Inspection Department has conducted experiments to verify that the normal temperature placement of one month will not affect the biological activity of powder products. After collecting, please store the product according to the requirements described in the datasheet. Most Selleck products are stable under the recommended conditions.

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