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Brain Behav Immun. 2012 Mar;26(3):407-13. doi: 10.1016/j.bbi.2011.10.001. Epub 2011 Oct 13.

Circadian expression of clock genes in mouse macrophages, dendritic cells, and B cells.

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Section of Infectious Diseases, Department of Internal Medicine, Yale University School of Medicine, New Haven, CT 06520-8022, USA.


In mammals, circadian and daily rhythms influence nearly all aspects of physiology, ranging from behavior to gene expression. Functional molecular clocks have been described in the murine spleen and splenic NK cells. The aim of our study was to investigate the existence of molecular clock mechanisms in other immune cells. Therefore, we measured the circadian changes in gene expression of clock genes (Per1, Per2, Bmal1, and Clock) and clock-controlled transcription factors (Rev-erbα and Dbp) in splenic enriched macrophages, dendritic cells, and B cells in both mice entrained to a light-dark cycle and under constant environmental conditions. Our study reveals the existence of functional molecular clock mechanisms in splenic macrophages, dendritic cells, and B cells.

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