[Cell cycle and molecular targets: CDK inhibition]
Philippe Carassou1, Laurent Meijer, Sylvestre Le Moulec
1HIA Legouest, service de médecine interne, BP 90001, 57077 Metz Cedex 3, France.
Bulletin Du Cancer
|July 9, 2011
Summary
Protein phosphorylation, a key cellular process, regulates cell division. Cyclin-dependent kinases control this process, making them important targets for cancer therapy.
Area of Science:
- Molecular Biology
- Cell Biology
- Biochemistry
Background:
- Protein phosphorylation is a crucial post-translational modification regulating vital cellular functions.
- Cell division, a complex process, is tightly controlled by numerous proteins.
- These regulatory proteins are activated through phosphorylation events.
Purpose of the Study:
- To highlight the significance of protein phosphorylation in cellular processes.
- To emphasize the role of cyclin-dependent kinases in cell division control.
- To identify cyclin-dependent kinases as potential therapeutic targets in oncology.
Main Methods:
- Review of existing literature on protein phosphorylation and cell cycle regulation.
- Analysis of the role of specific kinases in controlling cell division phases.
- Identification of cyclin-dependent kinases as key regulators.
Main Results:
- Protein phosphorylation is essential for regulating cell differentiation, proliferation, and apoptosis.
- Cyclin-dependent kinases are the primary enzymes responsible for activating key proteins in cell division.
- Dysregulation of cell division is a hallmark of cancer, implicating kinases in oncogenesis.
Conclusions:
- Protein phosphorylation is a fundamental regulatory mechanism in cellular life.
- Cyclin-dependent kinases play a critical role in cell cycle progression.
- Targeting cyclin-dependent kinases offers a promising strategy for cancer treatment.
Related Concept Videos
02:34Inhibition of Cdk Activity
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
02:34Inhibition of CDK Activity
The orderly progression of the cell cycle depends on the activation of Cdk protein by binding to its cyclin partner. However, the cell cycle must be restricted when undergoing abnormal changes. Most cancers correlate to the deregulated cell cycle, and since Cdks are a central component of the cell cycle, Cdk inhibitors are extensively studied to develop anticancer agents. For instance, cyclin D associates with several Cdks, such as Cdk 4/6, to form an active complex. The cyclin D-Cdk4/6 complex...
02:39Positive Regulator Molecules
Mitotic cell division results in daughter cells that exactly resemble the parent cell. However, errors in the DNA replication or distribution of genetic material may lead to genetic mutations that may be passed down to every new cell formed from the resulting abnormal cell. Propagation of such mutant cells is restricted through checkpoint mechanisms present at different stages of the cell cycle. These checkpoints involve regulator molecules that either promote or demote cell cycle events.
01:45Positive Regulator Molecules
To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
02:15M-Cdk Drives Transition Into Mitosis
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
02:15M-Cdk Drives Transition Into Mitosis
Checkpoints throughout the cell cycle serve as safeguards and gatekeepers, allowing the cell cycle to progress in favorable conditions and slow or halt it in problematic ones. This regulation is known as the cell cycle control system.
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...
Cyclin-dependent kinases, or Cdks, work in concert with cyclins to control cell cycle transitions. M-Cdk, a complex of Cdk1 bound to M cyclin, is a well-known example of this coordinated control that drives the transition from the G2 to the M phase.
M cyclin...