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Mahoney H, Peterson E, Justin H, Gonzalez D, Cardona C, Stevanovic K, Faulkner J, Yunus A, Portugues A, Henriksen A, Burns C, McNeill C, Gamsby J, Gulick D. Inhibition of casein kinase 1 δ/ε improves cognitive performance in adult C57BL/6J mice. Sci Rep 2021; 11:4746. [PMID: 33637777 PMCID: PMC7910436 DOI: 10.1038/s41598-021-83957-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2020] [Accepted: 01/14/2021] [Indexed: 01/31/2023] Open
Abstract
Time-of-day effects have been noted in a wide variety of cognitive behavioral tests, and perturbation of the circadian system, either at the level of the master clock in the SCN or downstream, impairs hippocampus-dependent learning and memory. A number of kinases, including the serine-threonine casein kinase 1 (CK1) isoforms CK1δ/ε, regulate the timing of the circadian period through post-translational modification of clock proteins. Modulation of these circadian kinases presents a novel treatment direction for cognitive deficits through circadian modulation. Here, we tested the potential for PF-670462, a small molecule inhibitor of CK1δ/ε, to improve cognitive performance in C57BL/6J mice in an array of behavioral tests. Compared to vehicle-treated mice tested at the same time of the circadian day, mice treated with PF-670462 displayed better recall of contextual fear conditioning, made fewer working memory errors in the radial arm water maze, and trained more efficiently in the Morris Water Maze. These benefits were accompanied by increased expression of activity-regulated cytoskeleton-associated protein (Arc) in the amygdala in response to an acute learning paradigm. Our results suggest the potential utility of CK1δ/ε inhibition in improving time-of-day cognitive performance.
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Affiliation(s)
- Heather Mahoney
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Emily Peterson
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Hannah Justin
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - David Gonzalez
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Christopher Cardona
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Korey Stevanovic
- National Institute of Environmental Health Sciences, National Institute of Health, Research Triangle Park, NC, USA
| | - John Faulkner
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Amara Yunus
- College of Pharmacy, University of Florida, Gainesville, FL, USA
| | - Alexandra Portugues
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Amy Henriksen
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Camden Burns
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Cameron McNeill
- USF Health Informatics Institute, University of South Florida Health, Tampa, FL, USA
| | - Joshua Gamsby
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA
| | - Danielle Gulick
- Byrd Alzheimer's Institute, University of South Florida Health, Tampa, FL, USA.
- Department of Molecular Medicine, Morsani College of Medicine, University of South Florida, Tampa, FL, USA.
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Deibel SH, Rota R, Steenland HW, Ali K, McNaughton BL, Tatsuno M, McDonald RJ. Assessment of Sleep, K-Complexes, and Sleep Spindles in a T21 Light-Dark Cycle. Front Neurosci 2020; 14:551843. [PMID: 33122986 PMCID: PMC7573124 DOI: 10.3389/fnins.2020.551843] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2020] [Accepted: 09/03/2020] [Indexed: 12/29/2022] Open
Abstract
Circadian rhythm misalignment has a deleterious impact on the brain and the body. In rats, exposure to a 21-hour day length impairs hippocampal dependent memory. Sleep, and particularly K-complexes and sleep spindles in the cortex, have been hypothesized to be involved in memory consolidation. Altered K-complexes, sleep spindles, or interaction between the cortex and hippocampus could be a mechanism for the memory consolidation failure but has yet to be assessed in any circadian misalignment paradigm. In the current study, continuous local field potential recordings from five rats were used to assess the changes in aspects of behavior and sleep, including wheel running activity, quiet wakefulness, motionless sleep, slow wave sleep, REM sleep, K-complexes and sleep spindles, in rats exposed to six consecutive days of a T21 light-dark cycle (L9:D12). Except for a temporal redistribution of sleep and activity during the T21, there were no changes in period, or total amount for any aspect of sleep or activity. These data suggest that the memory impairment elicited from 6 days of T21 exposure is likely not due to changes in sleep architecture. It remains possible that hippocampal plasticity is affected by experiencing light when subjective circadian phase is calling for dark. However, if there is a reduction in hippocampal plasticity, changes in sleep appear not to be driving this effect.
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Affiliation(s)
- Scott H Deibel
- Department of Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
| | - Ryan Rota
- Department of Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
| | - Hendrik W Steenland
- Department of Neuroscience, University of Lethbridge, Lethbridge, AB, Canada.,NeuroTek Innovative Technology Inc., Toronto, ON, Canada
| | - Karim Ali
- Department of Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
| | - Bruce L McNaughton
- Department of Neuroscience, University of Lethbridge, Lethbridge, AB, Canada.,Department of Neurobiology and Behavior, University of California, Irvine, Irvine, CA, United States
| | - Masami Tatsuno
- Department of Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
| | - Robert J McDonald
- Department of Neuroscience, University of Lethbridge, Lethbridge, AB, Canada
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