Human primary cells can tell body time: Dedicated to Steven A. Brown.

Autor: Katsioudi G; Department of Surgery, Division of Thoracic and Endocrine Surgery, University Hospitals of Geneva, Geneva, Switzerland.; Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland.; Diabetes Center, Faculty of Medicine, University of Geneva, Geneva, Switzerland.; Institute of Genetics and Genomics of Geneva (iGE3), Geneva, Switzerland., Biancolin AD; Department of Surgery, Division of Thoracic and Endocrine Surgery, University Hospitals of Geneva, Geneva, Switzerland.; Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland.; Diabetes Center, Faculty of Medicine, University of Geneva, Geneva, Switzerland.; Institute of Genetics and Genomics of Geneva (iGE3), Geneva, Switzerland., Jiménez-Sanchez C; Department of Surgery, Division of Thoracic and Endocrine Surgery, University Hospitals of Geneva, Geneva, Switzerland.; Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland.; Diabetes Center, Faculty of Medicine, University of Geneva, Geneva, Switzerland.; Institute of Genetics and Genomics of Geneva (iGE3), Geneva, Switzerland., Dibner C; Department of Surgery, Division of Thoracic and Endocrine Surgery, University Hospitals of Geneva, Geneva, Switzerland.; Department of Cell Physiology and Metabolism, Faculty of Medicine, University of Geneva, Geneva, Switzerland.; Diabetes Center, Faculty of Medicine, University of Geneva, Geneva, Switzerland.; Institute of Genetics and Genomics of Geneva (iGE3), Geneva, Switzerland.
Jazyk: angličtina
Zdroj: The European journal of neuroscience [Eur J Neurosci] 2024 Jul; Vol. 60 (2), pp. 3946-3960. Date of Electronic Publication: 2024 Jul 01.
DOI: 10.1111/ejn.16453
Abstrakt: The field of chronobiology has advanced significantly since ancient observations of natural rhythms. The intricate molecular architecture of circadian clocks, their hierarchical organization within the mammalian body, and their pivotal roles in organ physiology highlight the complexity and significance of these internal timekeeping mechanisms. In humans, circadian phenotypes exhibit considerable variability among individuals and throughout the individual's lifespan. A fundamental challenge in mechanistic studies of human chronobiology arises from the difficulty of conducting serial sampling from most organs. The concept of studying circadian clocks in vitro relies on the groundbreaking discovery by Ueli Schibler and colleagues that nearly every cell in the body harbours autonomous molecular oscillators. The advent of circadian bioluminescent reporters has provided a new perspective for this approach, enabling high-resolution continuous measurements of cell-autonomous clocks in cultured cells, following in vitro synchronization pulse. The work by Steven A. Brown has provided compelling evidence that clock characteristics assessed in primary mouse and human skin fibroblasts cultured in vitro represent a reliable estimation of internal clock properties in vivo. The in vitro approach for studying molecular human clocks in cultured explants and primary cells, pioneered by Steve Brown, represents an invaluable tool for assessing inter-individual differences in circadian characteristics alongside comprehensive genetic, biochemical and functional analyses. In a broader context, this reliable and minimally invasive approach offers a unique perspective for unravelling the functional inputs and outputs of oscillators operative in nearly any human tissue in physiological contexts and across various pathologies.
(© 2024 The Author(s). European Journal of Neuroscience published by Federation of European Neuroscience Societies and John Wiley & Sons Ltd.)
Databáze: MEDLINE
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