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Updated: Jul 6, 2025

Fluorescence-based Monitoring of PAD4 Activity via a Pro-fluorescence Substrate Analog
Published on: November 5, 2014
Therapeutic potential of targeting polo-like kinase 4
Qian Lei1, Quanwei Yu1, Na Yang2
1Department of Respiratory and Critical Care Medicine, West China Hospital and Targeted Tracer Research and Development Laboratory, Precision Medicine Key Laboratory of Sichuan Province & Precision Medicine Center, West China Hospital, Sichuan University, Chengdu, Sichuan, 610041, China.
Abstract:
Polo-like kinase 4 (PLK4), a highly conserved serine/threonine kinase, masterfully regulates centriole duplication in a spatiotemporal manner to ensure the fidelity of centrosome duplication and proper mitosis. Abnormal expression of PLK4 contributes to genomic instability and associates with a poor prognosis in cancer. Inhibition of PLK4 is demonstrated to exhibit significant efficacy against various types of human cancers, further highlighting its potential as a promising therapeutic target for cancer treatment. As such, numerous small-molecule inhibitors with distinct chemical scaffolds targeting PLK4 have been extensively investigated for the treatment of different human cancers, with several undergoing clinical evaluation (e.g., CFI-400945). Here, we review the structure, distribution, and biological functions of PLK4, encapsulate its intricate regulatory mechanisms of expression, and highlighting its multifaceted roles in cancer development and metastasis. Moreover, the recent advancements of PLK4 inhibitors in patent or literature are summarized, and their therapeutic potential as monotherapies or combination therapies with other anticancer agents are also discussed.
Insights
Polo-like kinase 4 (PLK4) regulates cell division and its abnormal expression drives cancer. PLK4 inhibitors show promise as cancer therapeutics, with several compounds in clinical trials.
Area of Science:
- Cell Biology
- Molecular Oncology
Background:
- Polo-like kinase 4 (PLK4) is a crucial regulator of centriole duplication, essential for accurate cell division.
- Aberrant PLK4 expression is linked to genomic instability and poor prognosis in various cancers.
Purpose of the Study:
- To review the structure, function, and regulation of PLK4.
- To summarize recent advancements in PLK4 inhibitors for cancer therapy.
Main Methods:
- Literature review of PLK4 structure, function, and regulation.
- Analysis of recent patents and publications on PLK4 inhibitors.
- Discussion of therapeutic strategies involving PLK4 inhibition.
Main Results:
- PLK4's role in centriole duplication and mitosis is well-established.
- PLK4 dysregulation contributes significantly to cancer development and metastasis.
- Numerous small-molecule PLK4 inhibitors have been developed, with some in clinical trials.
Conclusions:
- PLK4 is a validated therapeutic target for human cancers.
- PLK4 inhibitors demonstrate potential as monotherapies or in combination treatments for cancer.
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