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Healthy clocks, healthy body, healthy mind
Akhilesh B Reddy1, John S O'Neill
1Department of Clinical Neurosciences, University of Cambridge Metabolic Research Laboratories, Institute of Metabolic Science, Cambridge CB2 OQQ, UK. abr20@cam.ac.uk
Trends in Cell Biology
|November 21, 2009
Summary
Mammalian circadian rhythms, governed by the suprachiasmatic nuclei, are intrinsic cell functions. These biological clocks impact cell systems and disease, with Period genes acting as tumor suppressors in cancer.
Area of Science:
- * Chronobiology and molecular biology.
- * Mammalian physiology and disease mechanisms.
Background:
- * Circadian rhythms are approximately 24-hour cycles governing behavioral, physiological, cellular, and neuronal processes in mammals.
- * These rhythms are intrinsic to cells and persist in vitro, but are primarily synchronized by the hypothalamic suprachiasmatic nuclei for adaptation to the solar cycle.
- * The cellular timekeeping mechanism involves transcriptional and post-translational feedback loops.
Purpose of the Study:
- * To explore the interaction between the circadian clockwork and cellular systems.
- * To understand the impact of circadian rhythm disruption on disease.
- * To highlight the role of circadian biology in novel therapeutic strategies, particularly in cancer.
Main Methods:
- * Review of existing literature on circadian rhythms, molecular feedback loops, and cellular processes.
- * Analysis of the role of Period genes in cancer biology.
- * Exploration of the implications for complex disorders with controversial etiologies.
Main Results:
- * Circadian timekeeping is deeply embedded in cell function.
- * The circadian clock interacts with signal transduction and the cell cycle.
- * Period genes function as tumor suppressors in cancer, indicating a direct link between circadian mechanisms and cancer development.
Conclusions:
- * Understanding the circadian clock's interaction with cellular systems is crucial for disease understanding and treatment.
- * Circadian biology offers promising avenues for novel therapies, especially in oncology.
- * Further research is needed to elucidate the clockwork's role in complex, multifactorial diseases.
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