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Cancer-Critical Genes II: Tumor Suppressor Genes

Cancer-Critical Genes II: Tumor Suppressor Genes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...

Cancer-Critical Genes II: Tumor Suppressor Genes

Cancer-Critical Genes II: Tumor Suppressor Genes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...

Cancer-Critical Genes I: Proto-oncogenes

Cancer-Critical Genes I: Proto-oncogenes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...

Cancer-Critical Genes I: Proto-oncogenes

Cancer-Critical Genes I: Proto-oncogenes

Genes usually encode proteins necessary for the proper functioning of a healthy cell. Mutations can often cause changes to the gene expression pattern, thereby altering the phenotype.
When the function of certain critical genes, especially those involved in cell cycle regulation and cell growth signaling cascades, gets disrupted, it upsets the cell cycle progression. Such cells with unchecked cell cycles start proliferating uncontrollably and eventually develop into tumors.
Such genes that act...

Inhibition of Cdk Activity

Inhibition 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...

Inhibition of CDK Activity

Inhibition 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...

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Related Experiment Video

Updated: May 28, 2026

Through the Looking Glass: Time-lapse Microscopy and Longitudinal Tracking of Single Cells to Study Anti-cancer Therapeutics

Through the Looking Glass: Time-lapse Microscopy and Longitudinal Tracking of Single Cells to Study Anti-cancer Therapeutics

Published on: May 14, 2016

Checkpoint control and cancer.

R H Medema¹, L Macůrek

¹Department of Medical Oncology, University Medical Center, Utrecht, The Netherlands.

|October 4, 2011

Summary

This summary is machine-generated.

DNA-damaging cancer therapies harm healthy cells. Targeting DNA-damage checkpoints can selectively enhance tumor cell death, improving treatment efficacy and reducing side effects.

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Area of Science:

Oncology
Molecular Biology
Genetics

Background:

DNA-damaging therapies are standard non-surgical cancer treatments.
These therapies can cause significant damage and mutations in healthy tissues.
Selective enhancement of tumor cell death is crucial for improving treatment efficacy.

Purpose of the Study:

To review the mechanisms of DNA-damage checkpoint activation and inactivation.
To discuss the control of cell-cycle re-entry after DNA damage.
To explore targeting DNA-damage checkpoints in anticancer strategies.

Main Methods:

Review of existing literature on DNA-damage checkpoints.
Analysis of cell-cycle regulation in response to DNA damage.
Discussion of therapeutic strategies targeting DNA-damage response pathways.

Main Results:

DNA damage triggers cell-cycle arrest via checkpoints.
Checkpoint inactivation allows cell-cycle re-entry, potentially causing mutations.
Targeting checkpoints, like with poly-(ADP-ribose) polymerase inhibitors in BRCA1/2-deficient tumors, shows promise.

Conclusions:

Understanding DNA-damage checkpoint mechanisms is key to improving cancer therapy.
Selective targeting of these checkpoints offers a strategy to enhance tumor cell death while sparing healthy tissues.
Further research into checkpoint modulation could lead to more effective and less toxic anticancer treatments.