Bmal1 integrates circadian function and temperature sensing in the suprachiasmatic nucleus
Author(s)
Hoekstra, Marieke
Ness, Natalie
Badia Soteras, Aina
Brancaccio, Marco
Type
Journal Article
Abstract
Circadian regulation and temperature dependency are important orchestrators of molecular pathways. How the integration between these two drivers is achieved, is not understood. We monitored circadian- and temperature-dependent effects on transcription dynamics of cold-response protein RNA Binding Motif 3 (Rbm3). Temperature changes in the mammalian master circadian pacemaker, the suprachiasmatic nucleus (SCN), induced Rbm3 transcription and regulated its circadian periodicity, whereas the core clock gene Per2 was unaffected. Rbm3 induction depended on a full Brain And Muscle ARNT-Like Protein 1 (Bmal1) complement: reduced Bmal1 erased Rbm3 responses and weakened SCN circuit resilience to temperature changes. By focusing on circadian and temperature dependency, we highlight weakened transmission between core clock and downstream pathways as a potential route for reduced circadian resilience.
Date Issued
2024-04-23
Date Acceptance
2024-03-22
Citation
Proceedings of the National Academy of Sciences of USA, 2024, 121 (17)
ISSN
0027-8424
Publisher
National Academy of Sciences
Journal / Book Title
Proceedings of the National Academy of Sciences of USA
Volume
121
Issue
17
Copyright Statement
© 2024 the Author(s). Published by PNAS. This open access article is distributed under Creative Commons Attribution License 4.0 (CC BY).
License URL
Identifier
https://www.pnas.org/doi/full/10.1073/pnas.2316646121
Publication Status
Published
Article Number
e2316646121
Date Publish Online
2024-04-16