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Updated: Jun 14, 2025

Fluorescence-based Monitoring of PAD4 Activity via a Pro-fluorescence Substrate Analog
Published on: November 5, 2014
Role of PLK4 inhibition in cancer therapy
Kishore Banik1, Thomas J Hayman2
1Department of Therapeutic Radiology, Yale University School of Medicine, 15 York Street, New Haven, CT, 06510, USA.
Abstract:
Genomic instability is a hallmark of cancer and is associated with tumor progression and therapeutic resistance. Centrioles and centrosomes are a critical determinant of genomic stability. Polo-like kinase 4 (PLK4) is a serine-threonine kinase that plays a critical role in the regulation of centrosome duplication. PLK4 overexpression drives tumorigenesis and has been shown to be overexpressed in a wide variety of human tumors, where it is associated with more advanced disease and worse clinical outcomes. As such, there has been significant interest in pharmacologically targeting PLK4 using small-molecule inhibitors for therapeutic gain in multiple cancer types. In this review, we will discuss the functions of PLK4 in normal and oncogenic processes. We will further discuss the current state of PLK4 as a therapeutic target in cancer by reviewing the current literature on PLK4 inhibitors in both the preclinical and clinical space. Finally, we will discuss the emerging data exploring rational combinations of PLK4 inhibitors with DNA-damaging agents and immunotherapies as a means to unlock the potential of these agents in cancer therapy.
Insights
Polo-like kinase 4 (PLK4) is crucial for centrosome duplication and genomic stability. Targeting PLK4 with inhibitors shows promise for cancer therapy, especially when combined with other treatments.
Area of Science:
- Oncology
- Molecular Biology
- Genetics
Background:
- Genomic instability is a key feature of cancer, linked to tumor progression and treatment resistance.
- Centrioles and centrosomes are vital for maintaining genomic stability.
- Polo-like kinase 4 (PLK4) regulates centrosome duplication and its overexpression drives tumorigenesis.
Purpose of the Study:
- To review the functions of PLK4 in normal and cancerous processes.
- To evaluate the therapeutic potential of targeting PLK4 in cancer.
- To discuss emerging combination strategies involving PLK4 inhibitors.
Main Methods:
- Literature review of PLK4 functions and its role in cancer.
- Analysis of preclinical and clinical data on PLK4 inhibitors.
- Exploration of combination therapies with DNA-damaging agents and immunotherapies.
Main Results:
- PLK4 overexpression is associated with advanced cancer and poor outcomes.
- PLK4 inhibitors are being investigated in preclinical and clinical settings.
- Combinations of PLK4 inhibitors with other therapies may enhance efficacy.
Conclusions:
- PLK4 is a significant therapeutic target in oncology.
- PLK4 inhibitors represent a promising avenue for cancer treatment.
- Further research into combination therapies is warranted to maximize therapeutic benefits.
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