Ionizing Radiation and Translation Control: A Link to Radiation Hormesis?
Usha Kabilan1,2, Tyson E Graber2, Tommy Alain1,2
1Department of Biochemistry, Microbiology and Immunology, Faculty of Medicine, University of Ottawa, Ottawa, ON K1H 8M5, Canada.
International Journal of Molecular Sciences
|September 16, 2020
Summary
Cellular responses to ionizing radiation are regulated by mRNA translation control. This review explores how protein synthesis modulation underlies radiation hormesis and stress responses.
Area of Science:
- Molecular Biology
- Cellular Stress Response
- Radiation Biology
Background:
- Protein synthesis (mRNA translation) is a highly regulated, energy-intensive cellular process.
- Cellular responses to stress, like ionizing radiation, involve reprogramming protein synthesis.
- Radiation hormesis, beneficial effects of low-dose radiation, lacks clear molecular mechanisms.
Purpose of the Study:
- To explore how differential cellular responses to high- vs. low-dose ionizing radiation are mediated.
- To emphasize the role of mRNA translation control in radiation response and hormesis.
Main Methods:
- Review of existing literature on mRNA translation regulation.
- Analysis of signaling pathways involved in cellular stress responses.
- Integration of data on radiation hormesis and molecular mechanisms.
Main Results:
- mRNA translation control is a key regulatory node in cellular responses to ionizing radiation.
- Modulation of protein synthesis pathways differs between high- and low-dose radiation exposures.
- Understanding translation regulation may elucidate the mechanisms of radiation hormesis.
Conclusions:
- mRNA translation regulation is critical for adapting to ionizing radiation.
- Further research into translation control mechanisms is needed to understand radiation hormesis.
- Targeting mRNA translation could offer novel strategies for radiation protection or therapy.
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