Related Experiment Video
Updated: Aug 8, 2026
12:19
Analysis of Cell Cycle Position in Mammalian Cells
Published on: January 21, 2012
Mammalian G1 cyclins and cell cycle progression
1Department of Tumor Cell Biology, Howard Hughes Medical Institute, St. Jude Children's Research Hospital, Memphis, TN 38105, USA.
Summary
D- and E-type cyclins regulate cell cycle progression and are crucial for growth factor signaling. Their dysregulation is linked to cancer, highlighting their importance in cell cycle control, differentiation, and apoptosis.
Area of Science:
- Cell Biology
- Molecular Biology
- Biochemistry
Background:
- D- and E-type cyclins, discovered in 1991, are key regulators of the cell cycle.
- These molecules are involved in the final common pathway for growth factor-induced and antiproliferative signals.
Purpose of the Study:
- To investigate the role of D- and E-type cyclins in cell cycle control.
- To understand the biochemical pathways governing late G1 phase control.
- To explore the interplay between cell cycle regulators and tumor suppressor genes.
Main Methods:
- The abstract does not specify methods, focusing on the significance and implications of cyclin research.
Main Results:
- D- and E-type cyclins are central to late G1 phase control.
- Functional interplay exists between these cyclins and tumor suppressor gene products (p53, pRB).
- Genetic alterations in these genes contribute to cancer development.
Conclusions:
- Further research on these cyclins will elucidate their roles in differentiation and apoptosis.
- Understanding these molecules is vital for comprehending cell cycle regulation and its link to diseases like cancer.
Related Concept Videos
01:45Positive Regulator Molecules
To consistently produce healthy cells, the cell cycle—the process that generates daughter cells—must be precisely regulated.
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.
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...
02:15M-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...
02:34Inhibition 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...
02:15M-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...