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Circadian rhythms and cancer: implications for timing in therapy
Mohamed El-Tanani1,2, Syed Arman Rabbani3,4, Areeg Anwer Ali3,4
1RAK College of Pharmacy, Ras Al Khaimah Medical and Health Sciences University, Ras Al Khaimah, United Arab Emirates. eltanani@rakmhsu.ac.ae.
Discover Oncology
|December 18, 2024
Summary
Circadian rhythms regulate bodily functions. Disruptions are linked to cancer, but chronotherapy, timed treatments, may improve cancer care by enhancing efficacy and reducing side effects.
Area of Science:
- Chronobiology
- Cancer Biology
- Pharmacology
Background:
- Circadian rhythms, regulated by the suprachiasmatic nucleus (SCN), govern physiological processes like sleep, hormone release, and metabolism.
- Disruptions in circadian rhythms are associated with health issues, including metabolic syndrome, cardiovascular diseases, and cancer development.
- The circadian clock influences tumorigenesis via pathways such as cell cycle control, DNA damage response, apoptosis, and metabolism.
Purpose of the Study:
- To explore the link between circadian rhythm disruption and cancer.
- To investigate the role of the circadian timing system in cancer treatment efficacy and toxicity.
- To highlight the potential of chronotherapy in optimizing cancer treatment.
Main Methods:
- Review of preclinical and clinical studies on circadian rhythms and cancer.
- Analysis of chronotherapy's impact on chemotherapy and radiation efficacy.
- Examination of circadian variations in cellular processes relevant to drug metabolism and response.
Main Results:
- Circadian rhythm disruption is implicated in cancer incidence and progression.
- Chronotherapy, by leveraging circadian variations, can enhance anticancer activity.
- Studies show chronotherapy improves the therapeutic index of agents like cisplatin and 5-fluorouracil, reducing toxicity.
Conclusions:
- Further research is needed to understand circadian regulation in cancer.
- Developing personalized chronotherapeutic protocols based on individual circadian profiles is crucial.
- Chronotherapy holds promise for more effective and personalized cancer care.
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