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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...
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...
The Extrinsic Apoptotic Pathway01:17

The Extrinsic Apoptotic Pathway

The extrinsic apoptotic pathway is initiated when extracellular death-inducing signals, such as specific cytokines, activate the death receptors expressed on the cell surface. The immune cells involved in this pathway are natural killer cells (NK cells) and cytotoxic T-lymphocytes. NK cells are critical in innate immune response, while cytotoxic T-lymphocytes are associated with adaptive immune response. These cells recognize specific receptors expressed on the altered cells and activate...
Overview of Cell Death01:30

Overview of Cell Death

Cell death is an essential process where the body gets rid of old or damaged cells. Cell proliferation and death need to be balanced, as an imbalance between the two may lead to cancer or autoimmune diseases.
Cell death was observed in the early 19th century, but there was no experimental evidence to prove it. In 1842, Carl Vogt first discovered cell death in a metamorphic toad; however, it was not termed ‘cell death.’ Scientists discovered different cell death pathways only in the 20th century...

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Related Experiment Video

Updated: May 17, 2026

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

The intersection between DNA damage response and cell death pathways.

S Nowsheen1, E S Yang

  • 1Department of Radiation Oncology, Comprehensive Cancer Center, University of Alabama at Birmingham School of Medicine, USA.

Experimental Oncology
|October 17, 2012
PubMed
Summary
This summary is machine-generated.

DNA damage triggers cell fate decisions, influencing both survival and apoptosis. Understanding this interplay is crucial for disease research and therapeutic strategies.

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

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Cell Cycle-specific Measurement of γH2AX and Apoptosis After Genotoxic Stress by Flow Cytometry
08:21

Cell Cycle-specific Measurement of γH2AX and Apoptosis After Genotoxic Stress by Flow Cytometry

Published on: September 1, 2019

Related Experiment Videos

Last Updated: May 17, 2026

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

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

Cell Cycle-specific Measurement of γH2AX and Apoptosis After Genotoxic Stress by Flow Cytometry
08:21

Cell Cycle-specific Measurement of γH2AX and Apoptosis After Genotoxic Stress by Flow Cytometry

Published on: September 1, 2019

Area of Science:

  • Cell Biology
  • Molecular Biology
  • Genetics

Background:

  • Apoptosis is a regulated cellular process crucial for development and tissue homeostasis.
  • DNA damage is a significant cellular stress that can initiate repair or trigger programmed cell death.
  • The intricate relationship between DNA damage response and apoptosis is fundamental to understanding cell fate.

Purpose of the Study:

  • To review the complex interplay between DNA damage/repair pathways and apoptosis.
  • To highlight the significance of these pathways in human diseases like cancer.
  • To explore their role in predicting therapeutic responses.

Main Methods:

  • Literature review of studies on DNA damage, repair, and apoptosis.
  • Analysis of signaling pathways involved in cell survival and programmed cell death.
  • Examination of the crosstalk between DNA damage response and apoptotic pathways.

Main Results:

  • DNA damage elicits distinct cellular responses, including DNA repair and apoptosis.
  • The balance between these responses dictates cell survival or death.
  • Dysregulation of these pathways contributes to oncogenesis and impacts treatment efficacy.

Conclusions:

  • Elucidating the crosstalk between DNA damage response and apoptosis is vital for understanding disease etiology.
  • These pathways are critical determinants of cancer development and progression.
  • Targeting these pathways holds potential for improving cancer therapy outcomes.