Hesperadin

Catalog No.S1529

For research use only.

Hesperadin potently inhibits Aurora B with IC50 of 250 nM in a cell-free assay. It markedly reduces the activity of AMPK, Lck, MKK1, MAPKAP-K1, CHK1 and PHK while it does not inhibit MKK1 activity in vivo.

Hesperadin Chemical Structure

CAS No. 422513-13-1

Selleck's Hesperadin has been cited by 38 publications

Purity & Quality Control

Choose Selective Aurora Kinase Inhibitors

Other Aurora Kinase Products

Biological Activity

Description Hesperadin potently inhibits Aurora B with IC50 of 250 nM in a cell-free assay. It markedly reduces the activity of AMPK, Lck, MKK1, MAPKAP-K1, CHK1 and PHK while it does not inhibit MKK1 activity in vivo.
Targets
TbAUK1 [2]
(Cell-free assay)
Aurora B (human) [1]
(Cell-free assay)
40 nM 250 nM
In vitro

Hesperadin inhibits the ability of immunoprecipitated Aurora B to phosphorylate histone H3 with IC50 of 250 nM and markedly reduces the activity of other kinases (AMPK, Lck, MKK1, MAPKAP-K1, CHK1, and PHK) at a concentration of 1 μM. In contrast, only 20-100 nM of Hesperadin is sufficient to induce the loss of mitotic histone H3-Ser10 phosphorylation in HeLa cells. Hesperadin treatment causes defects in mitosis and cytokinesis, leading to stoppage of proliferation of HeLa cells and polyploidization, which can be specifically ascribed to the inhibition of Aurora B function during the process of chromosome attachment. Hesperadin (100 nM) quickly overrides the mitotic arrest induced by taxol or monastrol but not by nocodazole. Hesperadin and nocodazole treatment in HeLa cells abolishes kinetochore localization of BubR1 and diminishes the intensity of Bub1 at kinetochores, suggesting that Aurora B function is required for efficient kinetochore recruitment of BubR1 and Bub1, which in turn might be necessary for prolonged checkpoint signaling. [1] Hesperadin prevents the phosphorylation of recombinant trypanosome histone H3 by the T. brucei Aurora kinase-1 (TbAUK1) from pathogenic Trypanosoma brucei with IC50 of 40 nM in vitro kinase assays. Hesperadin significantly inhibits cell growth of cultured infectious bloodstream forms (BF) with IC50 of 48 nM, and only weakly inhibits cell growth of insect stage procyclic forms (PF) with IC50 of 550 nM. [2]

Cell Data
Cell Lines Assay Type Concentration Incubation Time Formulation Activity Description PMID
HepG2 cells NEGwd3lEgXSxdH;4bYNqfHliYYPzZZk> MnHMOFghcA>? MX3DfZRwfG:6aXPpeJkh[WejaX7zeEBpfW2jbjDI[ZBIOiClZXzsd{Bi\nSncjC0PEBpenNiYomgUXRVKGG|c3H5MEBVSzVyPUCuNkDPxE1? NWDscGdxOjR7MUC3OlY>
Assay
Methods Test Index PMID
Western blot trypanosome histone H3 19320832

Protocol (from reference)

Kinase Assay:[1]
  • The Aurora B kinase assay:

    For the Aurora B kinase assay, HeLa cells are lysed in a buffer containing 50 mM NaCl. The whole cell extract is spun at 13,000 rpm for 20 minutes at 4 °C using a table top centrifuge. The pellet obtained from 200 mg of whole cell extract is extracted again in 15 mL lysis buffer containing 250 mM NaCl in order to obtain active Aurora B kinase from mitotic chromatin. The low speed supernatant of the latter extract is used for immunoprecipitation. Monoclonal mouse anti–AIM-1, or mouse anti-HA, is coupled to GammaBind Plus Sepharose, and beads are rotated over-end in the extract for 90 minutes at 4 °C. Beads are washed, aliquoted, and washed in kinase buffer (20 mM Tris, pH 7.5, 150 mM NaCl, 10 mM MgCl2, 1 mM DTT, 10 mM NaF). The kinase assay is performed with 10 μL beads in 20 μL kinase buffer containing 5 μg histone H3, 10 μM ATP, 2.5 μCi [γ-32P]ATP, and different concentrations of Hesperadin for 20 minutes at 37 °C. SDS sample buffer is added, and samples are boiled and resolved by SDS-PAGE. The gel is dried, and the radioactive signal is detected by PhosphorImager analysis. The data is analyzed using ImageQuant software.

Cell Research:[1]
  • Cell lines: HeLa cells and PtK1 cells
  • Concentrations: Final concentration ~500 nM
  • Incubation Time: 24 and 48 hours
  • Method: Cells are exposed to different concentrations of Hesperadin for 24 and 48 hours. At indicated time points, methanol-fixed cell samples are washed with PBS and subsequently stained in PI buffer (50 μg/mL propidium iodide, 10 mM Tris, pH 7.5, 5 mM MgCl2, 200 μg/mL RNase A) for 20-40 minutes at 37 °C. The DNA content is determined by flow cytometry.
  • (Only for Reference)

Solubility (25°C)

In vitro

DMSO 103 mg/mL
(199.36 mM)
Water Insoluble
Ethanol Insoluble

In vivo

Add solvents to the product individually and in order
(Data is from Selleck tests instead of citations):
5% DMSO+40%PEG300+5% tween80+50% H2O
For best results, use promptly after mixing.

2.5 mg/mL

* 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.

Chemical Information

Molecular Weight 516.65
Formula

C29H32N4O3S

CAS No. 422513-13-1
Storage 3 years -20°C powder
2 years -80°C in solvent
Smiles CCS(=O)(=O)NC1=CC2=C(C=C1)NC(=C2C(=NC3=CC=C(C=C3)CN4CCCCC4)C5=CC=CC=C5)O

In vivo Formulation Calculator (Clear solution)

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Method for preparing DMSO master liquid: mg drug pre-dissolved in μL DMSO ( Master liquid concentration mg/mL, Please contact us first if the concentration exceeds the DMSO solubility of the batch of drug. )

Method for preparing in vivo formulation: Take μL DMSO master liquid, next addμL PEG300, mix and clarify, next addμL Tween 80, mix and clarify, next add μL ddH2O, mix and clarify.

Method for preparing in vivo formulation: Take μL DMSO master liquid, next add μL Corn oil, mix and clarify.

Note: 1. Please make sure the liquid is clear before adding the next solvent.
2. Be sure to add the solvent(s) in order. You must ensure that the solution obtained, in the previous addition, is a clear solution before proceeding to add the next solvent. Physical methods such
as vortex, ultrasound or hot water bath can be used to aid dissolving.

Molarity Calculator

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Tech Support

Answers to questions you may have can be found in the inhibitor handling instructions. Topics include how to prepare stock solutions, how to store inhibitors, and issues that need special attention for cell-based assays and animal experiments.

Handling Instructions

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