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Updated: Jan 26, 2026

Identification of Cyclin-dependent Kinase 1 Specific Phosphorylation Sites by an In Vitro Kinase Assay
Published on: May 3, 2018
Discovery and Development of Cyclin-Dependent Kinase 8 Inhibitors
Xiao Lv1, Yongbing Tian1, Shiyu Li1
1School of Food and Biological Engineering, Hefei University of Technology, Hefei, Anhui 230009, China.
Abstract:
Cyclin-dependent Kinase 8 (CDK8), a member of the CDKs family, has been widely focused owing to investigations of its critical roles in transcription and oncogenesis in recent years. Selective inhibition of CDK8 and its paralog CDK19 offers a novel therapeutic strategy for the treatment of some cancers. Up to now, though many small molecules against CDK8 have been discovered, most of them are discontinued in the preclinical trials due to the low selectivity and poor physicochemical properties. This review mainly summarizes the design strategies of selective CDK8 inhibitors having different chemical scaffolds with the aim to improve the inhibitory activity, selectivity, metabolic stability and solubility. Their corresponding Structure-activity Relationships (SAR) are also reviewed. On the basis of the discussion in this review, we hope more effective, selective and drug-like CDK8 inhibitors will be developed and demonstrate therapeutic values in the near future.
Insights
This review focuses on developing selective Cyclin-dependent Kinase 8 (CDK8) inhibitors for cancer therapy. It summarizes design strategies and structure-activity relationships to overcome limitations of current drug candidates.
Area of Science:
- Medicinal Chemistry
- Molecular Biology
- Oncology
Background:
- Cyclin-dependent Kinase 8 (CDK8) plays critical roles in transcription and oncogenesis.
- Selective inhibition of CDK8 and CDK19 presents a promising cancer therapeutic strategy.
- Existing CDK8 inhibitors often face challenges with selectivity and drug-like properties.
Purpose of the Study:
- To review design strategies for selective CDK8 inhibitors.
- To analyze Structure-Activity Relationships (SAR) for improved drug candidates.
- To guide the development of more effective and drug-like CDK8 inhibitors.
Main Methods:
- Literature review of CDK8 inhibitor research.
- Analysis of chemical scaffolds and their impact on selectivity.
- Evaluation of SAR data for optimizing inhibitor properties.
Main Results:
- Various chemical scaffolds have been explored for CDK8 inhibition.
- Design strategies aim to enhance inhibitory activity, selectivity, and physicochemical properties.
- SAR studies reveal key modifications for improving metabolic stability and solubility.
Conclusions:
- Overcoming selectivity and property limitations is crucial for CDK8 inhibitors.
- Continued research into design strategies and SAR is essential.
- Development of effective, selective, and drug-like CDK8 inhibitors holds therapeutic potential for cancer treatment.
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