The DNA damage response: Balancing the scale between cancer and ageing

Elena G Seviour1, Shiaw-Yin Lin

  • 1Department of Systems, Biology, M. D. Anderson Cancer Center, Houston, TX 77054, USA.

Aging
|December 31, 2010
PubMed

Insights

Defects in the DNA damage response (DDR) increase cancer risk and impact aging. Targeting DDR pathways offers new therapeutic strategies for cancer and age-related diseases.

Area of Science:

  • Genetics and Molecular Biology
  • Cancer Research
  • Aging Research

Background:

  • The DNA damage response (DDR) is crucial for maintaining genomic stability.
  • Defects in DDR are linked to increased cancer susceptibility.
  • DDR also plays a role in organismal aging processes.

Purpose of the Study:

  • To explore the dual role of the DDR in cancer and aging.
  • To identify the DDR as a potential therapeutic target for both cancer and aging.

Main Methods:

  • Review of existing literature on DDR mechanisms.
  • Analysis of studies linking DDR to cancer development.
  • Investigation of DDR's involvement in cellular senescence and organismal aging.

Main Results:

  • DDR defects significantly elevate cancer risk.
  • DDR is implicated in the mechanisms of normal and pathological aging.
  • Cellular removal of damaged DNA, a DDR function, impacts aging.

Conclusions:

  • The DDR is a critical regulator of both cancer prevention and aging.
  • Therapeutic strategies targeting the DDR could address both cancer and age-related conditions.

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...
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