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Updated: May 31, 2026

Identification of Novel CK2 Kinase Substrates Using a Versatile Biochemical Approach
Published on: February 21, 2019
Structure-based discovery of novel flavonol inhibitors of human protein kinase CK2
Andriy G Golub1, Volodymyr G Bdzhola, Yaroslav V Kyshenia
1Institute of Molecular Biology and Genetics of National Academy of Sciences of Ukraine, 150 Zabolotnogo Str., Kyiv 03143, Ukraine. andrew.golub@gmail.com
Abstract:
Serine/threonine protein kinase CK2 controls vast variety of fundamental processes in cell life; however, despite long period of study, its functional role is not completely determined. CK2 has a significant pathogenic potential and its activity is strictly associated with the development of various kinds of disorders. There are a growing number of facts that inhibitors of CK2 could be used as pharmaceutical agents for the cancer treatment, viral infections, and inflammatory diseases. In this article, we report structural and biological data on the novel synthetic flavonol derivatives, 3-hydroxy-4'-carboxyflavones, possessing a high inhibitory activity toward CK2. With the aid of combinatorial organic synthesis, molecular modeling techniques and biochemical in vitro tests, we studied the structure-activity relationships of flavonol derivatives and developed binding model describing their key intermolecular interactions with the CK2 ATP-binding site. Obtained data show that the synthetic 3-hydroxy-4'-carboxyflavones possess the highest activity among flavonol inhibitors of CK2 known till date.
Insights
Novel 3-hydroxy-4'-carboxyflavones show high inhibitory activity against protein kinase CK2. These findings highlight potential new pharmaceutical agents for treating cancer and inflammatory diseases.
Area of Science:
- Biochemistry
- Medicinal Chemistry
- Molecular Biology
Background:
- Protein kinase CK2 (CK2) is crucial for cellular processes but its exact functions remain unclear.
- CK2 activity is linked to various diseases, suggesting its potential as a therapeutic target.
- CK2 inhibitors are being explored for cancer, viral, and inflammatory disease treatments.
Purpose of the Study:
- To synthesize and evaluate novel flavonol derivatives as CK2 inhibitors.
- To investigate the structure-activity relationships of these compounds.
- To develop a binding model for their interaction with the CK2 ATP-binding site.
Main Methods:
- Combinatorial organic synthesis of 3-hydroxy-4 -carboxyflavones.
- Molecular modeling techniques.
- Biochemical in vitro assays to determine inhibitory activity.
Main Results:
- The novel synthetic 3-hydroxy-4 -carboxyflavones demonstrated high inhibitory activity against CK2.
- Structure-activity relationship analysis provided insights into key interactions.
- A binding model was developed, elucidating interactions within the CK2 ATP-binding site.
Conclusions:
- 3-hydroxy-4 -carboxyflavones are potent CK2 inhibitors.
- These compounds represent promising candidates for developing new therapeutic agents.
- The study advances understanding of CK2 inhibition mechanisms.
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