Cell-type specific circadian bioluminescence rhythms recorded from Dbp reporter mice reveal circadian oscillator misalignment [preprint]
Authors
Smith, Ciearra B.van der Vinne, Vincent
McCartney, Eleanor
Stowie, Adam C.
Leise, Tanya L.
Martin-Burgos, Blanca
Molyneux, Penny C. C.
Garbutt, Lauren A.
Brodsky, Michael H.
Davidson, Alec J.
Harrington, Mary E.
Dallmann, Robert
Weaver, David R.
UMass Chan Affiliations
Weaver LabNeuroNexus Institute
Biochemistry and Molecular Pharmacology
Molecular, Cell and Cancer Biology
Graduate School of Biomedical Sciences, Neuroscience Program
Neurobiology
Document Type
PreprintPublication Date
2021-04-05
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Circadian rhythms are endogenously generated physiological and molecular rhythms with a cycle length of about 24 h. Bioluminescent reporters have been exceptionally useful for studying circadian rhythms in numerous species. Here, we report development of a reporter mouse generated by modification of a widely expressed and highly rhythmic gene encoding D-site albumin promoter binding protein (Dbp). In this line of mice, firefly luciferase is expressed from the Dbp locus in a Cre-recombinase- dependent manner, allowing assessment of bioluminescence rhythms in specific cellular populations. A mouse line in which luciferase expression was Cre-independent was also generated. The Dbp reporter alleles do not alter Dbp gene expression rhythms in liver or circadian locomotor activity rhythms. In vitro and in vivo studies show the utility of the reporter alleles for monitoring rhythmicity. Our studies reveal cell-type specific characteristics of rhythms among neuronal populations within the suprachiasmatic nuclei in vitro. In vivo studies show stable Dbp-driven bioluminescence rhythms in the liver of Albumin-Cre;DbpKI/+ “liver reporter” mice. After a shift of the lighting schedule, locomotor activity achieved the proper phase relationship with the new lighting cycle more rapidly than hepatic bioluminescence did. As previously shown, restricting food access to the daytime altered the phase of hepatic rhythmicity. Our model allowed assessment of the rate of recovery from misalignment once animals were provided with food ad libitum. These studies provide clear evidence for circadian misalignment following environmental perturbations and reveal the utility of this model for minimally invasive, longitudinal monitoring of rhythmicity from specific mouse tissues.Source
Cell-type specific circadian bioluminescence rhythms in Dbp reporter mice. Ciearra B. Smith, Vincent van der Vinne, Eleanor McCartney, Adam C. Stowie, Tanya L. Leise, Blanca Martin-Burgos, Penny C. Molyneux, Lauren A. Garbutt, Michael H. Brodsky, Alec J. Davidson, Mary E. Harrington, Robert Dallmann, David R. Weaver bioRxiv 2021.04.04.438413; doi: https://doi.org/10.1101/2021.04.04.438413DOI
10.1101/2021.04.04.438413Permanent Link to this Item
http://hdl.handle.net/20.500.14038/29815Notes
This article is a preprint. Preprints are preliminary reports of work that have not been certified by peer review.
The PDF available for download is Version 1 of this preprint. The complete version history of this preprint is available at https://doi.org/10.1101/2021.04.04.438413.
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Now published in Journal of Biological Rhythms, doi: https://doi.org/10.1177/07487304211069452.
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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.Distribution License
http://creativecommons.org/licenses/by-nc-nd/4.0/ae974a485f413a2113503eed53cd6c53
10.1101/2021.04.04.438413
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Except where otherwise noted, this item's license is described as The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.