PD0166285

Catalog No.S8148 Batch:S814801

Technical Data

Formula

C₂₆H₂₇Cl₂N₅O₂

Molecular Weight

512.43

CAS No.

185039-89-8

Solubility (25°C)*

In vitro

DMSO

100 mg/mL (195.14 mM)

Ethanol

100 mg/mL (195.14 mM)

Water

Insoluble

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

Clear solution	5%DMSO 1 40%PEG300 2 5%Tween80 3 50%ddH2O	2.5mg/ml	Taking the 1 mL working solution as an example, add 50 μL of 50 mg/ml clarified DMSO stock solution to 400 μL of PEG300, mix evenly to clarify it; add 50 μL of Tween80 to the above system, mix evenly to clarify; then continue to add 500 μL of ddH2O to adjust the volume to 1 mL. The mixed solution should be used immediately for optimal results.
Clear solution	5% DMSO 1 95% Corn oil	0.5mg/ml	Taking the 1 mL working solution as an example, add 50 μL of 10 mg/ml clear DMSO stock solution to 950 μL of corn oil and mix evenly. 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

PD0166285 is a potent Wee1 and Chk1 inhibitor with activity at nanomolar concentrations (IC50=24 nM for Wee1 and 72 nM for Myt1). PD0166285 is also a novel G2 checkpoint abrogator. PD0166285 induces apoptosis.

Targets

Wee1 ^[1] (Cell-free assay)	Myt1 ^[1] (Cell-free assay)	Chk1 ^[1] (Cell-free assay)
24 nM	72 nM	3.4 μM

In vitro

PD0166285 is identified to inhibit Wee1 activity at nanomolar concentrations. The inhibitor abrogates G2/M checkpoint inducing early cell division. At the cellular level, 0.5 μM PD0166285 dramatically inhibits irradiation-induced Cdc2 phosphorylation at the Tyr-15 and Thr-14 in seven of seven cancer cell lines tested. This G2 checkpoint abrogation by PD0166285 is demonstrated to kill cancer cells. PD0166285 does not inhibit Cdc2/cyclin B but inhibits Chk1 kinase at a much higher concentration (3433 nM). the treatment of cells with the inhibitor is related to microtubule stabilization and decrease in cyclin D transcription. Thus, PD0166285 may be a potentially useful anti-cancer therapy^[1]^[2].

In vivo

PD0166285 at 0.5 μM concentration can inhibit Cdc2Y15 /T14 phosphorylation in all cell lines tested, regardless of their p53 status^[1] and pharmacological targeting of WEE1 by PD0166285 sensitizes U251-FM GBM tumors to IR in vivo^[3].

Protocol (from reference)

Kinase Assay:^{^[1]}	Wee1 Mass Screening Wee1 mass screening is performed using Amersham’s p34cdc2 kinase SPA kit with some modifications. Briefly, 45–60 nM full-length Wee1 kinase is incubated with 25 μM compounds, 20 μM ATP, and 122–441 nM Cdc2/cyclin B in a final volume of 50 μl of enzyme dilution buffer [50 mM Tris (pH 8.0), 10 mM NaCl, 10 mM MgCl2, 1 mM DTT, and 0.1 mM Na3VO4]. After 30 min incubation at 30°C, 30 μl of [33P]ATP containing kinase buffer [67 mM Tris (pH 8.0), 40 mM NaCl, 13 mM MgCl2, 1 mM DTT, and 0.13 mM Na3VO4] containing 1 μM biotinylated peptide, and 0.25 μCi of [γ-33P]ATP is added to the reaction and incubated for another 30 min at 30°C. The reaction is stopped by adding 200 μl of stop buffer [50 μM ATP, 5 mM EDTA, 0.1% Triton X-100, and 1.25 mg/ml SPA beads in PBS]. After centrifugation at 2400 rpm for 15 min, the plate is counted with Wallac’s Microbeta counter.
Cell Assay:^{^[2]}	Cell lines B16 mouse melanoma cells Concentrations 0.5, 1, 2 μM Incubation Time 4 h, 24 h Method B16 cells (1 × 10⁵ cells in 100 mm-dishes) are maintained in medium overnight. In addition, the cells are treated with (0, 0.5, 1.0, or 2.0 μM) PD0166285 (including DMSO vehicle) for indicated times. The cells are washed twice with phosphate-buffered saline (PBS). Next, the cells are trypsinized, so the cell numbers in each dish are determined by using a computed cell-counter (Sysmex CDA-500) according to manufacturer's recommendation.
Animal Study:^{^[3]}	Animal Models Nude mice with implanted GBM cells Dosages 0, 20, 100, 200, or 400 µM in 100 µl Administration s.c.

References

Selleck's PD0166285 has been cited by 7 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
Large tandem duplications in cancer result from transcription and DNA replication collisions [ medRxiv, 2024, 2023.05.17.23290140]	PubMed: 38260434
Mild replication stress causes premature centriole disengagement via a sub-critical Plk1 activity under the control of ATR-Chk1 [ Nat Commun, 2023, 14(1):6088]	PubMed: 37773176
Myt1 overexpression mediates resistance to cell cycle and DNA damage checkpoint kinase inhibitors [ Front Cell Dev Biol, 2023, 11:1270542]	PubMed: 38020882
Prolonged unfolded protein reaction is involved in the induction of chronic myeloid leukemia cell death upon oprozomib treatment [ Cancer Sci, 2020, 112(1):133-143]	PubMed: 33067904
Inducing and exploiting vulnerabilities for the treatment of liver cancer [ Nature, 2019, 10.1038/s41586-019-1607-3]	PubMed: 31578521
Inducing and exploiting vulnerabilities for the treatment of liver cancer. [ Nature, 2019, 574(7777):268-272]	PubMed: 31578521

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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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