Cited by 194Circadian rhythm and melatoninSleep and Work-Related FatigueSleep and Wakefulness Research

Selective Inhibition of Casein Kinase 1ϵ Minimally Alters Circadian Clock Period

Walton, Kevin M., Fisher, Katherine, Rubitski, David, Marconi, Michael, Meng, Qing-Jun, Sládek, Martin, Adams, Jessica, Bass, Michael +13 more·2009·The Journal of Pharmacology and Experimental Therapeutics

Abstract

The circadian clock links our daily cycles of sleep and activity to the external environment. Deregulation of the clock is implicated in a number of human disorders, including depression, seasonal affective disorder, and metabolic disorders. Casein kinase 1 epsilon (CK1epsilon) and casein kinase 1 delta (CK1delta) are closely related Ser-Thr protein kinases that serve as key clock regulators as demonstrated by mammalian mutations in each that dramatically alter the circadian period. Therefore, inhibitors of CK1delta/epsilon may have utility in treating circadian disorders. Although we previously demonstrated that a pan-CK1delta/epsilon inhibitor, 4-[3-cyclohexyl-5-(4-fluoro-phenyl)-3H-imidazol-4-yl]-pyrimidin-2-ylamine (PF-670462), causes a significant phase delay in animal models of circadian rhythm, it remains unclear whether one of the kinases has a predominant role in regulating the circadian clock. To test this, we have characterized 3-(3-chloro-phenoxymethyl)-1-(tetrahydro-pyran-4-yl)-1H-pyrazolo[3,4-d]pyrimidin-4-ylamine (PF-4800567), a novel and potent inhibitor of CK1epsilon (IC(50) = 32 nM) with greater than 20-fold selectivity over CK1delta. PF-4800567 completely blocks CK1epsilon-mediated PER3 nuclear localization and PER2 degradation. In cycling Rat1 fibroblasts and a mouse model of circadian rhythm, however, PF-4800567 has only a minimal effect on the circadian clock at concentrations substantially over its CK1epsilon IC(50). This is in contrast to the pan-CK1delta/epsilon inhibitor PF-670462 that robustly alters the circadian clock under similar conditions. These data indicate that CK1epsilon is not the predominant mediator of circadian timing relative to CK1delta. PF-4800567 should prove useful in probing unique roles between these two kinases in multiple signaling pathways.

Integrity signals

Registry

Crossref · 10.1124/jpet.109.151415

Cites

34 of 34 references verified0 citation errors · 0 not checkable

Statistics

Recomputing p-values needs the paper’s full text.

Claims the paper makes

This paper’s full text isn’t openly available, so its claims and self-check weren’t run. The registry and citation checks still apply.

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Walton, K. M., Fisher, K., Rubitski, D., Marconi, M., Meng, Q.-J., Sládek, M., Adams, J., Bass, M., Chandrasekaran, R., Butler, T., Griffor, M., Rajamohan, F., Serpa, M., Chen, Y., Claffey, M., Hastings, M., Loudon, A., Maywood, E., Ohren, J., Doran, A., & Wager, T. T.
Affiliations
Pfizer (United States) (US)
Venue
The Journal of Pharmacology and Experimental Therapeutics
Publisher
Elsevier BV
Published
2009-08
Volume
330
Issue
2
Pages
430-439
ISSN
0022-3565 (ISSN-L)
OpenAlex
W2114428498
Cited by
184
References
34
Citations by year
2026: 13 · 2025: 10 · 2024: 9 · 2023: 2 · 2022: 7 · 2021: 9 · 2020: 11 · 2019: 17 · 2018: 10 · 2017: 12 · 2016: 7 · 2015: 13 · 2014: 13 · 2013: 11 · 2012: 12
FWCI
5.98
Type
journal article
Language
en
Open access
closed
Locations
  • Journal of Pharmacology and Experimental Therapeutics (publishedVersion)
  • PubMed (publishedVersion)
  • Research Explorer (The University of Manchester) (publishedVersion)
Funders
Biotechnology and Biological Sciences Research Council (BB/E022553/1)
Topics
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and Work-Related Fatigue
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
Keywords
CK1ε, CK1δ, circadian clock, circadian period, kinase inhibitors, circadian rhythm, circadian disorders, selective kinase inhibition
MeSH terms
Animals, Circadian Rhythm, Dose-Response Relationship, Drug, Humans, Male, Mice, Inbred C57BL, Pyrazoles, Pyrimidines, Protein Kinase Inhibitors, Casein Kinase 1 epsilon, Mice

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review