Related Experiment Video

Updated: Aug 6, 2026

Characterizing DNA Repair Processes at Transient and Long-lasting Double-strand DNA Breaks by Immunofluorescence Microscopy
08:31

Characterizing DNA Repair Processes at Transient and Long-lasting Double-strand DNA Breaks by Immunofluorescence Microscopy

Published on: June 8, 2018

Checkpoint and coordinated cellular responses to DNA damage

Xiaohong H Yang1, Lee Zou

  • 1IMGH Cancer Center, Harvard Medical School, Charlestown, MA 02129, USA.

Results and Problems in Cell Differentiation
|August 15, 2006
PubMed

Insights

DNA damage and replication checkpoints coordinate cellular responses to genotoxic stress, aiding DNA repair and preventing mutations. These checkpoints are integral to maintaining genomic stability during chromosomal metabolism.

Area of Science:

  • Molecular Biology
  • Cell Biology
  • Genetics

Background:

  • DNA damage and replication checkpoints are crucial signaling pathways.
  • These pathways regulate cellular responses to genotoxic stress.
  • They are essential for maintaining genomic integrity.

Purpose of the Study:

  • To discuss current models of DNA damage and replication checkpoints.
  • To highlight recent advances in checkpoint research.
  • To emphasize the integral role of checkpoints in chromosomal metabolism and genomic stability.

Main Methods:

  • Review of existing literature on DNA damage and replication checkpoints.
  • Analysis of current models and signaling mechanisms.
  • Synthesis of recent research findings.

Main Results:

  • Checkpoint activation attenuates cell cycle progression.
  • Checkpoints facilitate DNA repair and replication fork recovery.
  • Checkpoint signaling is intimately linked with DNA replication and repair processes.

Conclusions:

  • DNA checkpoints are not merely surveillance systems but integral components of chromosomal metabolism.
  • These pathways are vital for preventing DNA lesions from becoming heritable mutations.
  • Recent advances underscore the complex interplay between checkpoints and genomic stability maintenance.

More Related Videos

Two- and Three-Dimensional Live Cell Imaging of DNA Damage Response Proteins10:24

Two- and Three-Dimensional Live Cell Imaging of DNA Damage Response Proteins

Published on: September 28, 2012

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage10:59

Visualizing and Quantifying Endonuclease-Based Site-Specific DNA Damage

Published on: August 21, 2021

Related Concept Videos

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...
The Cell Cycle Control System01:28

The Cell Cycle Control System

The cell cycle regulation directs how a cell proceeds from one phase to the next and begins mitosis. The cell cycle control system includes intracellular regulatory molecules and external triggers. They provide "stop" or "advance" signals and operate at specific cell cycle stages termed checkpoints to ensure that a particular process is completed before the cell advances to the next phase.
Cyclins and cyclin-dependent kinases (Cdks) are the primary cell cycle regulators and function at the cell...
The Cell Cycle Control System02:11

The Cell Cycle Control System

The cell cycle is an organized set of events that leads the cell to divide into two daughter cells, each containing chromosomes identical to the parent cell. It is the cell cycle that leads to the formation of an entire organism from a single-cell zygote. Besides, cell division also functions in the renewal or repair of tissues in adult multicellular eukaryotes. For example, in the bone marrow, the stem cells divide to form new blood cells. Although essential for several functions, cell...
Overview of DNA Repair02:25

Overview of DNA Repair

In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...
Overview of DNA Repair02:25

Overview of DNA Repair

In order to be passed through generations, genomic DNA must be undamaged and error-free. However, every day, DNA in a cell undergoes several thousand to a million damaging events by natural causes and external factors. Ionizing radiation such as UV rays, free radicals produced during cellular respiration, and hydrolytic damage from metabolic reactions can alter the structure of DNA. Damages caused include single-base alteration, base dimerization, chain breaks, and cross-linkage.
Chemically...