Targeting Protein-Protein Interactions to Inhibit Cyclin-Dependent Kinases
Mark Klein1,2
1Hematology/Oncology Section, Primary Care Service Line, Minneapolis VA Healthcare System, Minneapolis, MN 55417, USA.
Abstract:
Cyclin-dependent kinases (CDKs) play diverse and critical roles in normal cells and may be exploited as targets in cancer therapeutic strategies. CDK4 inhibitors are currently approved for treatment in advanced breast cancer. This success has led to continued pursuit of targeting other CDKs. One challenge has been in the development of inhibitors that are highly selective for individual CDKs as the ATP-binding site is highly conserved across this family of proteins. Protein-protein interactions (PPI) tend to have less conservation amongst different proteins, even within protein families, making targeting PPI an attractive approach to improving drug selectivity. However, PPI can be challenging to target due to structural and physicochemical features of these interactions. A review of the literature specific to studies focused on targeting PPI involving CDKs 2, 4, 5, and 9 was conducted and is presented here. Promising lead molecules to target select CDKs have been discovered. None of the lead molecules discovered have led to FDA approval; however, the studies covered in this review lay the foundation for further discovery and develop of PPI inhibitors for CDKs.
Insights
Targeting protein-protein interactions (PPI) of cyclin-dependent kinases (CDKs) offers a path to selective cancer drugs. Research shows promising molecules, laying groundwork for future CDK-targeted therapies.
Area of Science:
- Oncology
- Molecular Biology
- Drug Discovery
Background:
- Cyclin-dependent kinases (CDKs) are crucial in cell regulation and cancer.
- CDK4 inhibitors are approved for breast cancer, driving interest in targeting other CDKs.
- Developing selective CDK inhibitors is challenging due to conserved ATP-binding sites.
Purpose of the Study:
- To review literature on targeting protein-protein interactions (PPI) involving CDKs 2, 4, 5, and 9.
- To explore PPI targeting as a strategy for achieving greater drug selectivity.
- To identify promising lead molecules for CDK-targeted therapies.
Main Methods:
- Literature review focused on studies targeting CDK-involving PPI.
- Analysis of challenges and opportunities in targeting these interactions.
- Identification and summary of promising lead compounds.
Main Results:
- Promising lead molecules targeting specific CDKs have been identified through PPI inhibition strategies.
- Protein-protein interactions offer a less conserved target compared to ATP-binding sites, aiding selectivity.
- No lead molecules have yet achieved FDA approval.
Conclusions:
- Targeting CDK-mediated PPI is a viable strategy for developing selective anti-cancer drugs.
- The reviewed studies provide a foundation for future development of PPI inhibitors for CDKs.
- Further research is needed to advance lead molecules to clinical application.
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