Onvansertib (NMS-1286937, NMS-P937)

Catalog No.S7255 Batch:S725507

Technical Data

Formula

C₂₄H₂₇F₃N₈O₃

Molecular Weight

532.52

CAS No.

1034616-18-6

Solubility (25°C)*

In vitro

DMSO

50 mg/mL (93.89 mM)

Ethanol

2 mg/mL (3.75 mM)

Water

Insoluble

In Vivo (Add solvents to the product individually and in order.)

Homogeneous suspension	CMC-NA	≥5mg/ml	Taking the 1 mL working solution as an example, add 5 mg of this product to 1 ml of CMC-Na solution, mix evenly to obtain a homogeneous suspension with a final concentration of 5 mg/ml.
Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O Validated by Selleck labs. Should you need adjustments to this formulation, contact our sales team for custom testing.	1.250mg/ml (2.35mM)	Taking the 1 mL working solution as an example, add 50 μL 25 mg/ml clarified DMSO stock solution to 400 μL PEG300, mix evenly to clarify it; add 50 μL Tween80 to the above system, mix evenly to clarify it; then continue to add 500 μL ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.

* <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

Onvansertib (NMS-1286937, NMS-P937) is an orally available, selective Polo-like Kinase 1 (PLK1) inhibitor with IC50 of 2 nM, 5000-fold selectivity over PLK2/PLK3. This compound potently causes a mitotic cell-cycle arrest followed by apoptosis in cancer cell lines and inhibits tumour growth. Phase 1.

Targets

PLK1

2 nM

In vitro

Onvansertib (NMS-1286937, NMS-P937) shows a broad-spectrum antiproliferative activity against different solid tumour, leukaemias and lymphomas cell lines. It potently causes a mitotic cell-cycle arrest followed by apoptosis in A2780 cells.

In Vivo

Onvansertib (NMS-1286937, NMS-P937) shows significant tumour growth inhibition in mice xenografted with human HCT116 colon adenocarcinoma cells at 90 mg/kg/d i.v. or p.o.

In mice bearing HT29, Colo205 colorectal, or A2780 ovarian xenograft tumours, it inhibits xenograft tumour growth. In addition, this compound, in combination with approved cytotoxic drugs, causes enhanced tumour regression and prolongs survival of animals.

Protocol (from reference)

Kinase Assay:^{^[1]}	Kinase profile Onvansertib (NMS-1286937, NMS-P937) inhibitory activity and the potency of selected compounds are determined using a trans-phosphorylation assay. Specific peptide or protein substrates are trans-phosphorylated by their specific serine-threonine or tyrosine kinase, in the presence of ATP traced with ³³P-γ-ATP, at optimised buffer and cofactors conditions. At the end of the phosphorylation reaction, more than 98% unlabeled ATP and radioactive ATP is captured by adding an excess of the ion exchange dowex resin; the resin then settles down to the bottom of the reaction plate by gravity. Supernatant, containing the phosphorylated substrate, is subsequently withdrawn and transferred into a counting plate, followed by evaluation by b-counting. Inhibitory potency evaluation for all the tested kinases was performed at 25 °C using a 60 min end-point assay where the concentrations of ATP and substrates are kept equal to 2 x αKm and saturated (>5 x αKm), respectively.
Cell Assay:^{^[2]}	Cell Lines 137 solid tumor cell lines, and 43 cell lines derived from leukemias and lymphomas Concentrations ~10 μM Incubation Time 72 hours Method Cells are seeded into 96- or 384-well plates at densities ranging from 10,000 to 30,000/cm2 for adherent and 100,000/mL for nonadherent cells in appropriate medium supplemented with 10% fetal calf serum. After 24 hours, cells were treated in duplicate with serial dilutions of Onvansertib (NMS-1286937, NMS-P937), and 72 hours later, the viable cell number was assessed by the CellTiter-Glo Assay (Promega). IC50 values were calculated with a sigmoidal fitting algorithm (Assay Explorer MDL). Experiments were carried out independently at least twice.

Kinase Assay:^{^[1]}

Kinase profile
Onvansertib (NMS-1286937, NMS-P937) inhibitory activity and the potency of selected compounds are determined using a trans-phosphorylation assay. Specific peptide or protein substrates are trans-phosphorylated by their specific serine-threonine or tyrosine kinase, in the presence of ATP traced with ³³P-γ-ATP, at optimised buffer and cofactors conditions. At the end of the phosphorylation reaction, more than 98% unlabeled ATP and radioactive ATP is captured by adding an excess of the ion exchange dowex resin; the resin then settles down to the bottom of the reaction plate by gravity. Supernatant, containing the phosphorylated substrate, is subsequently withdrawn and transferred into a counting plate, followed by evaluation by b-counting. Inhibitory potency evaluation for all the tested kinases was performed at 25 °C using a 60 min end-point assay where the concentrations of ATP and substrates are kept equal to 2 x αKm and saturated (>5 x αKm), respectively.

Cell Assay:^{^[2]}

Cell Lines
137 solid tumor cell lines, and 43 cell lines derived from leukemias and lymphomas
Concentrations
~10 μM
Incubation Time
72 hours
Method
Cells are seeded into 96- or 384-well plates at densities ranging from 10,000 to 30,000/cm2 for adherent and 100,000/mL for nonadherent cells in appropriate medium supplemented with 10% fetal calf serum. After 24 hours, cells were treated in duplicate with serial dilutions of Onvansertib (NMS-1286937, NMS-P937), and 72 hours later, the viable cell number was assessed by the CellTiter-Glo Assay (Promega). IC50 values were calculated with a sigmoidal fitting algorithm (Assay Explorer MDL). Experiments were carried out independently at least twice.

References

https://pubmed.ncbi.nlm.nih.gov/21470862/
https://pubmed.ncbi.nlm.nih.gov/22319201/

Sellecks Onvansertib (NMS-1286937, NMS-P937) Has Been Cited by 13 Publications

Targeting PLK1-CBX8-GPX4 axis overcomes BRAF/EGFR inhibitor resistance in BRAFV600E colorectal cancer via ferroptosis [ Nat Commun, 2025, 16(1):3605]	PubMed: 40240371
Multi-Omic Evaluation of PLK1 Inhibitor-Onvansertib-In Colorectal Cancer Spheroids [ J Mass Spectrom, 2025, 60(5):e5137]	PubMed: 40197665
PLK1 Inhibition Induces Synthetic Lethality in Fanconi Anemia Pathway-Deficient Acute Myeloid Leukemia [ Cancer Res Commun, 2025, 5(4):648-667]	PubMed: 40111122
Genome-wide CRISPR screens identify PKMYT1 as a therapeutic target in pancreatic ductal adenocarcinoma [ EMBO Mol Med, 2024, 10.1038/s44321-024-00060-y]	PubMed: 38570712
Therapeutic targeting of PLK1 in TERT promoter-mutant hepatocellular carcinoma [ Clin Transl Med, 2024, 14(5):e1703]	PubMed: 38769666
Proteomic analysis reveals a PLK1-dependent G2/M degradation program and a role for AKAP2 in coordinating the mitotic cytoskeleton [ Cell Rep, 2024, 43(8):114510]	PubMed: 39018246
Onvansertib inhibits the proliferation and improves the cisplatin-resistance of lung adenocarcinoma via β-catenin/c-Myc signaling pathway [ Am J Cancer Res, 2023, 13(2):623-637]	PubMed: 36895968
CSE1L is a negative regulator of the RB-DREAM pathway in p53 wild-type NSCLC and can be targeted using an HDAC1/2 inhibitor [ Sci Rep, 2023, 13(1):16271]	PubMed: 37759078
Development of a nanoparticle-based immunotherapy targeting PD-L1 and PLK1 for lung cancer treatment [ Nat Commun, 2022, 13(1):4261]	PubMed: 35871223
Development of novel immunotherapy based on nanoparticle co-delivering PLK1 andPD-L1inhibitors for lung cancer treatment [ Research Square, 2022, Version 2]	PubMed: None

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SHIPPING AND STORAGE
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