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Radiation-induced transgenerational instability.
1Department of Genetics, University of Leicester, Leicester LE1 7RH, UK. yed2@le.ac.uk
Oncogene
|October 15, 2003
Summary
Exposure to radiation and mutagens can increase mutation rates in offspring, not just directly exposed parents. This review examines transgenerational instability and its effects on genome stability and cancer risk in descendants.
Area of Science:
- Genetics
- Radiation Biology
- Toxicology
Background:
- Direct exposure to ionizing radiation and chemical mutagens elevates germline mutation rates in parents.
- Emerging evidence suggests indirect effects of radiation on genome stability, transmissible across generations.
Purpose of the Study:
- To review the phenomenon of transgenerational instability.
- To focus on data linking parental irradiation to offspring's cancer incidence and mutation rates.
- To discuss potential mechanisms underlying transgenerational instability.
Main Methods:
- Literature review of studies on mutation induction and genome stability.
- Analysis of data on cancer incidence in offspring of irradiated parents.
- Examination of research on germline and somatic mutation rates in descendants.
Main Results:
- Irradiated parents exhibit elevated germline mutation rates.
- Offspring of irradiated parents show increased cancer incidence.
- Elevated mutation rates are observed in both germline and somatic tissues of offspring.
Conclusions:
- Radiation exposure can induce transgenerational instability, affecting offspring genome stability.
- Transgenerational instability is associated with increased cancer risk and mutation rates in descendants.
- Further research into the mechanisms of transgenerational instability is warranted.