PUBLICATION

Copper regulates rest-activity cycles through the locus coeruleus-norepinephrine system

Authors
Xiao, T., Ackerman, C.M., Carroll, E.C., Jia, S., Hoagland, A., Chan, J., Thai, B., Liu, C.S., Isacoff, E.Y., Chang, C.J.
ID
ZDB-PUB-180606-2
Date
2018
Source
Nature Chemical Biology   14(7): 655-663 (Journal)
Registered Authors
Isacoff, Ehud, Xiao, Tong
Keywords
none
MeSH Terms
  • Animals
  • Copper/chemistry
  • Copper/metabolism*
  • Locus Coeruleus/chemistry
  • Locus Coeruleus/metabolism*
  • Norepinephrine/chemistry
  • Norepinephrine/metabolism*
  • Zebrafish
PubMed
29867144 Full text @ Nat. Chem. Biol.
Abstract
The unusually high demand for metals in the brain, along with insufficient understanding of how their dysregulation contributes to neurological diseases, motivates the study of how inorganic chemistry influences neural circuitry. We now report that the transition metal copper is essential for regulating rest-activity cycles and arousal. Copper imaging and gene expression analysis in zebrafish identifies the locus coeruleus-norepinephrine (LC-NE) system, a vertebrate-specific neuromodulatory circuit critical for regulating sleep, arousal, attention, memory and emotion, as a copper-enriched unit with high levels of copper transporters CTR1 and ATP7A and the copper enzyme dopamine β-hydroxylase (DBH) that produces NE. Copper deficiency induced by genetic disruption of ATP7A, which loads copper into DBH, lowers NE levels and hinders LC function as manifested by disruption in rest-activity modulation. Moreover, LC dysfunction caused by copper deficiency from ATP7A disruption can be rescued by restoring synaptic levels of NE, establishing a molecular CTR1-ATP7A-DBH-NE axis for copper-dependent LC function.
Genes / Markers
Figures
Show all Figures
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Antibodies
Orthology
Engineered Foreign Genes
Mapping