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Updated: Aug 12, 2026

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors
10:33

Development of Inhibitors of Protein-protein Interactions through REPLACE: Application to the Design and Development Non-ATP Competitive CDK Inhibitors

Published on: October 26, 2015

Cyclin dependent kinase inhibitors

J W Harper1

  • 1Department of Biochemistry, Baylor College of Medicine, Houston, Texas 77030, USA.

Cancer Surveys
|January 1, 1997
PubMed

Insights

Cyclin-dependent kinase inhibitors (CKIs) regulate cell cycle progression in mammals. While not essential for survival, CKI loss impacts cell cycle control, development, and tumor suppression.

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Biochemistry

Background:

  • Eukaryotic cell cycle progression is controlled by cyclin-dependent kinases (CDKs).
  • CDKs are negatively regulated by phosphorylation and cyclin kinase inhibitors (CKIs).
  • Two mammalian CKI classes exist: INK4 and CIP/KIP.

Purpose of the Study:

  • To summarize the current understanding of CKIs' roles in cell growth control.
  • To highlight the versatility of CKIs as negative regulators of CDK function.
  • To discuss the potential involvement of CKIs in development, checkpoint control, and tumor suppression.

Main Methods:

  • Analysis of CKI knockout phenotypes in mammalian cells.

Main Results:

  • CKI knockout mice generally survive.
  • Observed phenotypes in knockout models reflect the loss of cell cycle inhibition.
  • CKIs play versatile roles in regulating CDK activity.

Conclusions:

  • CKIs are crucial negative regulators of the cell cycle.
  • Loss of CKIs leads to observable phenotypes related to cell cycle control.
  • CKIs have significant implications in development, checkpoint control, and tumor suppression.

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