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Updated: Jul 7, 2026

Real-Time Monitoring of Aurora kinase A Activation using Conformational FRET Biosensors in Live Cells
06:29

Real-Time Monitoring of Aurora kinase A Activation using Conformational FRET Biosensors in Live Cells

Published on: July 30, 2020

Discovery of selective aminothiazole aurora kinase inhibitors

Carsten B Andersen1, Yongqin Wan, Jae W Chang

  • 1Department of Biological Chemistry, Genomics Institute of the Novartis Research Foundation, 10675 John Jay Hopkins Drive, San Diego, California 92121, USA.

ACS Chemical Biology
|March 1, 2008
PubMed

Insights

Researchers discovered novel aminothiazole inhibitors targeting Aurora kinases, crucial for cell division. These compounds show high selectivity and effectively inhibit Aurora kinase activity, offering potential therapeutic strategies for cancer.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Biochemistry

Background:

  • Aurora family kinases are essential regulators of mitosis, controlling centrosome maturation, spindle assembly, and chromosome segregation.
  • Dysregulation of Aurora kinases, often through genetic amplification or overexpression, leads to aneuploidy and is implicated in tumorigenesis.

Purpose of the Study:

  • To discover and characterize novel small molecule inhibitors of Aurora kinases.
  • To assess the kinase selectivity and inhibitory effects of newly identified aminothiazole compounds.
  • To elucidate the structural basis of inhibition through cocrystallization with the Aurora B:INCENP complex.

Main Methods:

  • Discovery of small molecule aminothiazole inhibitors.
  • Kinase selectivity assays.
  • Cocrystallization of inhibitors with the Xenopus laevis Aurora B:INCENP complex (1.7 Å resolution).
  • Assessment of cellular effects, including histone H3 serine 10 phosphorylation, cytokinesis, and endoreduplication.

Main Results:

  • Identification of novel aminothiazole compounds with exceptional selectivity for Aurora kinases.
  • Determination of a high-resolution cocrystal structure revealing the binding mode of an inhibitor with the Aurora B:INCENP complex.
  • Demonstration that the inhibitors induce characteristic hallmarks of Aurora kinase inhibition in cells.

Conclusions:

  • The newly discovered aminothiazole inhibitors are potent and selective modulators of Aurora kinase activity.
  • The structural data provides insights into the mechanism of Aurora kinase inhibition by these compounds.
  • These inhibitors represent promising candidates for further development as anti-cancer therapeutics targeting Aurora kinase-driven tumorigenesis.

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