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Studying Chronic Exposure of Mice to Ultraviolet B Radiation
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Circadian effects on UV-induced damage and mutations.
Donna Goodenow1, Adam J Greer1, Sean J Cone1
1Department of Biological Sciences, North Carolina State University, Raleigh, NC 27606, USA.
Mutation Research. Reviews in Mutation Research
|June 11, 2022
Summary
The skin
Area of Science:
- Dermatology
- Chronobiology
- Molecular Biology
Background:
- Skin cancer is the most diagnosed cancer in the US, with rising incidence.
- Ultraviolet radiation (UVR) is a known carcinogen, but not the sole cause of skin cancer.
- Circadian biology, the study of daily cycles, offers new insights into physiological disruptions.
Purpose of the Study:
- To review the mechanisms of the circadian clock and its role in skin homeostasis.
- To examine the skin's response to UVR, including DNA damage and repair.
- To explore how the circadian clock influences UVR response and skin cancer development.
Main Methods:
- Literature review of circadian biology and skin cancer research.
- Analysis of molecular mechanisms of circadian clock-controlled genes (CCGs) in skin.
- Examination of DNA repair pathways, specifically nucleotide excision repair (NER).
Main Results:
- The skin possesses a robust circadian clock influencing its response to environmental stressors.
- Circadian clock regulation impacts DNA repair efficiency following UVR exposure.
- Disruptions in circadian rhythms may exacerbate UVR-induced skin damage and mutations.
Conclusions:
- The circadian clock is a critical factor in maintaining skin homeostasis and responding to UVR.
- Understanding the interplay between circadian rhythms and UVR exposure is vital for skin cancer prevention.
- Further research into circadian disruption models is needed to assess human health impacts.
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