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Related Concept Videos

Nucleotide Excision Repair01:38

Nucleotide Excision Repair

DNA Distortion and Damage
Cells are regularly exposed to mutagens—factors in the environment that can damage DNA and generate mutations. UV radiation is one of the most common mutagens and is estimated to introduce a significant number of changes in DNA. These include bends or kinks in the structure, which can block DNA replication or transcription. If these errors are not fixed, the damage can cause mutations, which in turn can result in cancer or disease depending on which sequences are...
Nucleotide Excision Repair01:08

Nucleotide Excision Repair

Overview
Nucleotide Excision Repair01:08

Nucleotide Excision Repair

Overview
DNA Damage Can Stall the Cell Cycle02:36

DNA Damage Can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
DNA Damage can Stall the Cell Cycle02:36

DNA Damage can Stall the Cell Cycle

In response to DNA damage, cells can pause the cell cycle to assess and repair the breaks. However, the cell must check the DNA at certain critical stages during the cell cycle. If the cell cycle pauses before DNA replication, the cells will contain twice the amount of DNA. On the other hand, if cells arrest after DNA replication but before mitosis, they will contain four times the normal amount of DNA. With a host of specialized proteins at their disposal,cells must use the right protein at...
Long-patch Base Excision Repair01:02

Long-patch Base Excision Repair

Since the discovery of the two BER pathways, there has been a debate about how a cell chooses one pathway over the other and the factors determining this selection. Numerous in vitro experiments have pointed out multiple determinants for the sub-pathway selection. These are:

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Related Experiment Video

Updated: May 25, 2026

Proximity Ligand Assay to Localize Proteins in DNA Damage Sites
09:39

Proximity Ligand Assay to Localize Proteins in DNA Damage Sites

Published on: August 2, 2024

PTEN in DNA damage repair.

Mei Ming1, Yu-Ying He1

  • 1Section of Dermatology, Department of Medicine, University of Chicago, Chicago, IL 60637, USA.

Cancer Letters
|January 24, 2012
PubMed
Summary

Phosphatase and tensin homolog (PTEN) is crucial for genomic integrity and DNA repair. This review highlights PTEN’s newly discovered roles in DNA damage repair and response, offering insights for cancer prevention and therapy.

Area of Science:

  • Molecular Biology
  • Genetics
  • Cancer Research

Background:

  • DNA repair is vital for genomic integrity and organism function.
  • Phosphatase and tensin homolog (PTEN) is a known tumor suppressor inhibiting the PI3K/AKT pathway.
  • PTEN mutations, deletions, or silencing are common in human cancers.

Purpose of the Study:

  • To review recent findings on PTEN's function in DNA damage repair (DDR).
  • To explore PTEN's role in double-strand break repair and nucleotide excision repair.
  • To discuss PTEN's involvement in DNA damage response via Chk1 and p53 pathways.

Main Methods:

  • Literature review of recent studies on PTEN and DNA repair.
  • Analysis of PTEN's interactions within DNA damage response pathways.

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Tools to Study the Role of Architectural Protein HMGB1 in the Processing of Helix Distorting, Site-specific DNA Interstrand Crosslinks

Published on: November 10, 2016

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Last Updated: May 25, 2026

Proximity Ligand Assay to Localize Proteins in DNA Damage Sites
09:39

Proximity Ligand Assay to Localize Proteins in DNA Damage Sites

Published on: August 2, 2024

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage
10:59

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage

Published on: August 21, 2021

Tools to Study the Role of Architectural Protein HMGB1 in the Processing of Helix Distorting, Site-specific DNA Interstrand Crosslinks
12:19

Tools to Study the Role of Architectural Protein HMGB1 in the Processing of Helix Distorting, Site-specific DNA Interstrand Crosslinks

Published on: November 10, 2016

  • Synthesis of newly discovered mechanisms of PTEN in DNA repair.

    • Main Results:

    • PTEN plays a critical role in DNA damage repair and response.
    • PTEN is involved in double-strand break repair and nucleotide excision repair.
    • PTEN interacts with Chk1 and p53 pathways in DNA damage response.

    Conclusions:

    • PTEN's functions extend beyond tumor suppression to DNA repair and response.
    • Understanding PTEN's mechanisms in DNA repair can inform cancer prevention strategies.
    • PTEN's role offers potential for novel therapeutic interventions in cancer treatment.