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Circadian clock synchrony and chronotherapy opportunities in cancer treatment
Anna R Damato1, Erik D Herzog1
1Department of Biology, Washington University, Box 1137, St. Louis, MO 63130, USA.
Abstract:
Cell-autonomous, tissue-specific circadian rhythms in gene expression and cellular processes have been observed throughout the human body. Disruption of daily rhythms by mistimed exposure to light, food intake, or genetic mutation has been linked to cancer development. Some medications are also more effective at certain times of day. However, a limited number of clinical studies have examined daily rhythms in the patient or drug timing as treatment strategies. This review highlights advances and challenges in cancer biology as a function of time of day. Recent evidence for daily rhythms and their entrainment in tumors indicate that personalized medicine should include understanding and accounting for daily rhythms in cancer patients.
Insights
Daily rhythms influence cancer development and drug effectiveness. Understanding these biological clocks in tumors is crucial for developing personalized cancer treatments and improving patient outcomes.
Area of Science:
- Chronobiology
- Cancer Biology
- Oncology
Background:
- Cell-autonomous, tissue-specific circadian rhythms govern gene expression and cellular processes in humans.
- Disruption of these daily rhythms is linked to cancer development.
- Medication efficacy can vary based on the time of day.
Purpose of the Study:
- To review advances and challenges in understanding cancer biology concerning the time of day.
- To highlight the potential of chronotherapy in cancer treatment.
- To emphasize the need for incorporating circadian rhythm knowledge into personalized cancer medicine.
Main Methods:
- Literature review of recent evidence on circadian rhythms in cancer.
- Analysis of studies on daily rhythms in tumors and their entrainment.
- Synthesis of findings on the impact of time of day on cancer biology and treatment.
Main Results:
- Evidence shows daily rhythms exist and can be entrained within tumors.
- Disrupted circadian rhythms are associated with increased cancer risk.
- Timing of drug administration can significantly impact treatment effectiveness.
Conclusions:
- Circadian rhythms play a significant role in cancer biology.
- Personalized medicine in oncology should integrate the patient's daily rhythms.
- Further clinical studies are needed to explore time-based cancer treatment strategies.
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