Related Experiment Video
Updated: Apr 3, 2026
Real-Time Monitoring of Aurora kinase A Activation using Conformational FRET Biosensors in Live Cells
Published on: July 30, 2020
Abrogation of AuroraA-TPX2 by novel natural inhibitors: molecular dynamics-based mechanistic analysis
Ankita Gupta1, Ritu Jain2, Divya Wahi2
1a Department of Biotechnology , Delhi Technological University , New Delhi , India and.
Introduction:
Cancer is characterized by uncontrolled cell growth and genetic instabilities. The human Aurora-A kinase protein plays a crucial role in spindle assembly during mitosis and is activated by another candidate oncogene, targeting protein for Xklp2 (TPX2). It has been proposed that dissociation of Aurora A-TPX2 complex leads to disruption of mitotic spindle apparatus, thereby preventing cell division and further tumor growth.
Materials And Methods:
A large natural compound library was docked against the active site of Aurora A-TPX2 complex. The protein-ligand complexes were subjected to molecular dynamics simulation to ascertain their binding stability. The drug properties of the compounds were analyzed to observe their drug-like properties.
Results:
The virtual screening of natural compound library yielded two high scoring compounds, the first compound CTOM [ZINC ID: 38143674] (Glide score: -9.49) was stable for 17 ns while the second TTOM (Glide score: -9.07) was stable for 15 ns. While CTOM interacted with His280, Thr288 of Aurora A and Tyr34, Lys38 of TPX2, TTOM interacted with Arg285 and Arg286 in addition to the residues involved with CTOM.
Conclusions:
We report two natural compounds as potential drugs leads for the disruption of this complex. These ligands show a preferable docking score and have many drugs like properties within in the range of 95% of known drugs. The study provides evidence that CTOM and TTOM can efficiently inhibit the TPX2-mediated activation of Aurora A. Thus, it paves way for an elaborate investigation and establishes the importance of computational approaches as time- and cost-effective techniques.
Insights
Two natural compounds, CTOM and TTOM, were identified as potential cancer drugs. They effectively inhibit the Aurora A-TPX2 complex, which is crucial for cell division and tumor growth.
Area of Science:
- Biochemistry
- Computational Chemistry
- Drug Discovery
Background:
- Cancer is driven by uncontrolled cell growth and genetic instability.
- Aurora A kinase, activated by TPX2, is vital for mitotic spindle assembly.
- Disrupting the Aurora A-TPX2 complex may inhibit tumor growth.
Purpose of the Study:
- To identify natural compounds that can disrupt the Aurora A-TPX2 complex.
- To evaluate the drug-like properties and binding stability of potential inhibitors.
Main Methods:
- Virtual screening of a large natural compound library against the Aurora A-TPX2 active site.
- Molecular dynamics simulations to assess binding stability.
- Analysis of drug-like properties for identified compounds.
Main Results:
- Two compounds, CTOM and TTOM, showed high docking scores and stability (17 ns and 15 ns, respectively).
- CTOM and TTOM interacted with key residues in the Aurora A-TPX2 complex.
- Both compounds exhibited favorable drug-like properties.
Conclusions:
- CTOM and TTOM are promising drug leads for inhibiting the Aurora A-TPX2 complex.
- These compounds can block TPX2-mediated activation of Aurora A.
- Computational methods offer a cost-effective approach for identifying novel cancer therapeutics.
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