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Updated: Jun 11, 2025

Real-Time Monitoring of Aurora kinase A Activation using Conformational FRET Biosensors in Live Cells
Published on: July 30, 2020
The significant others of aurora kinase a in cancer: combination is the key
Kumar Nikhil1,2, Kavita Shah3
1Department of Chemistry, Purdue University Institute for Cancer Research, 560 Oval Drive, West Lafayette, IN, 47907, USA. nikhil.kumar@kiitbiotech.ac.in.
Abstract:
AURKA is predominantly famous as an essential mitotic kinase. Recent findings have also established its critical role in a plethora of other biological processes including ciliogenesis, mitochondrial dynamics, neuronal outgrowth, DNA replication and cell cycle progression. AURKA overexpression in numerous cancers is strongly associated with poor prognosis and survival. Still no AURKA-targeted drug has been approved yet, partially because of the associated collateral toxicity and partly due to its limited efficacy as a single agent in a wide range of tumors. Mechanistically, AURKA overexpression allows it to phosphorylate numerous pathological substrates promoting highly aggressive oncogenic phenotypes. Our review examines the most recent advances in AURKA regulation and focuses on 33 such direct cancer-specific targets of AURKA and their associated oncogenic signaling cascades. One of the common themes that emerge is that AURKA is often involved in a feedback loop with its substrates, which could be the decisive factor causing its sustained upregulation and hyperactivation in cancer cells, an Achilles heel not exploited before. This dynamic interplay between AURKA and its substrates offers potential opportunities for targeted therapeutic interventions. By targeting these substrates, it may be possible to disrupt this feedback loop to effectively reverse AURKA levels, thereby providing a promising avenue for developing safer AURKA-targeted therapeutics. Additionally, exploring the synergistic effects of AURKA inhibition with its other oncogenic and/or tumor-suppressor targets could provide further opportunities for developing effective combination therapies against AURKA-driven cancers, thereby maximizing its potential as a critical drug target.
Insights
Aurora kinase A (AURKA) is crucial in cancer, but targeted drugs face challenges. Targeting AURKA
Area of Science:
- Molecular Biology
- Cancer Biology
- Biochemistry
Background:
- Aurora kinase A (AURKA) is a key mitotic kinase implicated in various cellular processes beyond mitosis, including DNA replication and cell cycle progression.
- Overexpression of AURKA is frequently observed in many cancers, correlating with poor patient prognosis and survival.
- Current AURKA-targeted therapies are limited by toxicity and efficacy issues, with no approved drugs available.
Purpose of the Study:
- To review recent advances in understanding AURKA regulation and its direct cancer-specific targets.
- To identify novel therapeutic strategies by exploring the feedback loops between AURKA and its substrates.
- To investigate the potential of targeting AURKA substrates and combination therapies for cancer treatment.
Main Methods:
- Review of recent scientific literature on AURKA regulation and function.
- Analysis of 33 direct cancer-specific AURKA targets and their associated oncogenic signaling pathways.
- Examination of feedback mechanisms between AURKA and its substrates in cancer cells.
Main Results:
- AURKA plays critical roles in ciliogenesis, mitochondrial dynamics, and neuronal outgrowth, in addition to its mitotic functions.
- AURKA overexpression promotes aggressive oncogenic phenotypes through phosphorylation of numerous pathological substrates.
- A common theme identified is the involvement of AURKA in feedback loops with its substrates, contributing to its sustained hyperactivation in cancer.
Conclusions:
- The dynamic interplay between AURKA and its substrates presents a potential therapeutic vulnerability.
- Targeting these substrates could disrupt feedback loops, leading to reduced AURKA levels and safer therapeutics.
- Combination therapies involving AURKA inhibition and targeting its substrates may offer effective treatment strategies for AURKA-driven cancers.
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